BACKGROUND OF THE INVENTION
FIELD OF THE INVENTION
The present invention relates to a photographic film processing apparatus
for processing a long developed photographic film formed by joining a plurality
of films with a splicing material.
DESCRIPTION OF THE RELATED ART
In processing exposed photographic film with a small automatic developing
unit, films in respective clients' orders are developed separately, one after another.
However, it is inefficient to process one film after another. For
processing with a large automatic developing unit, therefore, exposed photographic
films in a plurality of orders are joined at the ends with a splicing material (e.g.
splice . tape) to form a long photographic film. The long photographic film is continuously
developed and taken up in the form of a roll.
The developed photographic film taken up in a roll is subjected to
a printing process by an automatic printing unit. In conventional practice, for
example, the long film is passed through the printing process and taken up in a
roll again, and subsequently the film is cut order by order by a cutting deviced.
A method for separating such joined photographic films subsequent
to the exposing and printing process is known from US-A-5 373 339, in which the
splice adhesive between two films is heated until it softens and subsequently the
two films are pulled in opposite direction in order to separate them from each other.
Additionally, a splice pick-up web is provided for removing the splices.
Developed photographic film such as an ordinary 135 film, for example,
may be a film with full-size or panorama-size frames 36mm long each, or a film with
half-size frames 17mm long each.
No problem arises where the automatic printing unit can cope with
all sizes at high speed. However, the full size and panorama size require different
size pieces of printing paper and different degrees of enlargement. In the case
of half size, the direction of printing paper is variable between longitudinal and
transverse, besides a different degree of enlargement. Thus, in practice, there
are limitations to what the automatic printing unit can do.
Conventionally, where a long photographic film includes panorama-size
and half-size films, the long film is subjected to a printing process and taken
up in a roll, while printing only the full-size film first, skipping the panorama-size
and half-size films. Subsequently, the panorama-size and half-size films are printed,
and the long film is cut for respective orders. Where film in one order has a mixture
of full-size and panorama-size films, similarly the full-size film is printed first,
and then the panorama-size film, followed by a cutting process.
Thus, varied image lengths may be present in a long photographic film
formed by joining a plurality of films with a splicing material. This gives rise
to a problem, with the conventional apparatus, of requiring very complicated and
inefficient processes from printing to cutting.
For avoiding this problem US-A-4 319 946 discloses an apparatus for
automatically classifying and reorganizing a processed long length of films prior
to the exposing and printing process, the films being connected together having
different frame sizes into lengths of films each having the same frame size. For
that, the apparatus comprises a cutter for cutting the spliced portions of films,
a classification and reorganizing means for forming the classified and cut films
into lengths of films each having the same frame size and a splicer for splicing
the films with corresponding sizes into one long length. However, this method is
very complicated, since the joined films have to be separated from each other, reorganized
and again joined together.
SUMMARY OF THE INVENTION
In order to solve the problem encountered in the prior art noted above,
the object of the present invention is to provide a photographic film processing
apparatus for carrying out various exposing processes including a printing process
efficiently and speedily even for a long developed photographic film formed by joining
a plurality of films with a splicing material.
The above object is fulfilled, according to the present invention,
by a photographic film processing apparatus as defined in claim 1.
That is, a main cutter cuts the long developed film into short films
prior to an exposing process, and a second transport device transports the short
films to an exposure processing unit.
With the above construction, the long film is cut into short films
corresponding to respective orders from clients. These short films are transported
to the exposure processing unit.
After the long film is cut into short films corresponding to the respective
orders, the short films having special image frames such as panorama-size or half-size
frames are excluded once before reaching the exposure processing unit. Those short
films having only full-size image frames are transported to the exposure processing
units. Alternatively, an appropriate measure may be taken to omit an exposing process
for the short films having special size image frames. This apparatus avoids the
complicated practice of the prior art. That is, in the prior art, films in a long
spliced film having only full-size image frames are processed by the exposure processing
units and the long film is taken up in a roll. Then films having special size frames
are processed by the exposure processing units. Thereafter the long film is cut
order by order. Thus, the apparatus according to the present invention carries out
various exposing processes efficiently as a whole.
Where the exposure processing units can cope with the full size and
panorama size of the same image frame length, only half-size films having a different
image frame length may be excluded. Where the exposure processing unit can cope
with full size and half size, only the panorama size films may be excluded.
Apart from the presence of special size films, the long photographic
film could include films unfit for an exposing process because of an extreme degree
of overexposure or underexposure. An appropriate measure may be taken to exclude
such films.
In a preferred embodiment of the present invention, a loop storing
device is disposed on a transport line formed by the first transport device and
the second transport device for storing the long developed film in loop form. This
construction enables a smooth operation by absorbing or eliminating any time lag
between the process of cutting the long photographic film by the main cutter and
the processes by the exposure processing unit.
In another embodiment of the invention, a discharge device is interposed
between the main cutter and the exposure processing unit for discharging film fragments
cut by the main cutter from a transport line formed by the first transport device
and the second transport device. With this construction, film fragments resulting
from the cutting process may automatically be discharged from the film transport
line. Consequently, the film transport is not affected by cut, unwanted parts of
the film.
In a further embodiment of the invention, a film propriety distinguishing
device is disposed on a transport line formed by the first transport device and
the second transport device for determining whether the short films are fit for
processing by the exposure processing unit. The film propriety distinguishing device
distinguishes, without requiring observation by the operator, image frames of special
lengths mixed into the long developed photographic film or presence of films having
overexposed image frames, for example. This automatic distinguishing operation realizes
improved efficiency and reliable results of distinguishment.
The processing apparatus may further comprise a process averting device
for averting, from processing by the exposure processing unit, those of the short
films determined by the film propriety distinguishing device to be unfit. Preferably,
the process averting device defines a branch line for branching the short films
determined to be unfit from the transport line. A simple additional construction
consisting of the branch line enables an automatic removal of unfit photographic
films before reaching the exposure processing units, to smooth the processing by
the exposure processing unit.
Preferably, the discharge device defines a discharge passage extending
downward from the transport line for guiding cut film fragments including small
fragments from film regions adjacent the splicing material and a large fragment
including a film leader connected to a forward end of the long developed film, the
discharge passage including a partition mounted in an intermediate position thereof
for allowing passage of only the small fragments and deflecting the large fragment.
Thus, large and small film fragments all fall into the discharge passage, and the
large fragment including the leader is deflected by the partition. Generally, the
leader is larger than the fragments cut from the region of the splicing material
in the photographic film. Utilizing this fact, the leader may be collected separately
from the fragments cut from the splice region of the photographic film by the simple
construction consisting of the partition disposed in an intermediate position of
the discharge passage.
Further, the partition may be disposed in such a position that the
large fragment is transported by the transport line until a forward end of the film
leader reaches the partition. Then, the leader advancing through the discharge passage
is controlled with respect to position and inclination transversely of the advancing
direction. Thus, the leader is restrained from shifting or inclining to varied extents
transversely of the advancing direction, thereby to realize reliable sorting of
the leader.
The invention proposes that the discharge device includes a branching
opening defined in a side wall of the discharge passage above the partition for
allowing passage of the large fragment. This opening is provided in order to separate
the leader positionally and clearly from the small fragments which are to be discarded,
so that the leader may be recovered, with priority, for reuse.
To remove the cut fragments with greater assurance, the discharge
device may include a movable guide disposed in a region of intersection between
the transport line and the discharge passage to be switchable between a posture
for guiding the short films to advance along the transport line and a posture for
guiding the film fragments cut by the main cutter into the discharge passage.
To ensure that the region of the splicing material does not adversely
affect the film transport when the short films are transported and processed at
the same time, the processing apparatus in a preferred embodiment further comprises
an auxiliary cutter for cutting lateral portions of the region of the splicing material
in the long developed film.
According to this construction, when the main cutter is operated to
cut the long photographic film in the region of the splicing material to a short
film corresponding to each order, for example, the auxiliary cutter may also be
operated to cut lateral portions of the region of the splicing material. Consequently,
any portions of the film protruding laterally of the region of the splicing material
may be removed as otherwise such portions could obstruct a subsequent transporting
process.
When the main cutter cuts the long photographic film in the region
of the splicing material, the following cutting positions are conceivable:
- (1) Cutting in such a position that at least part of the splicing material remains
attached to one of the short films downstream with respect to a direction of transport;
- (2) Cutting in a position upstream of the splicing material with respect to
the direction of transport; and
- (3) Cutting only in a position upstream of the splicing material whereby the
splicing material remains intact on the downstream one of the short films.
In all of the above cutting modes, at least part of the splicing material
remains attached to the downstream short film. In a preferred embodiment of the
invention, the splicing material remaining attached to one of the short films includes
data relating to that short film to facilitate subsequent film processing. For this
purpose, a reading device may be mounted on the transport line for reading the data
from the splicing material and outputting contents of the data. It is particularly
advantageous if the data is stored in a film identifying bar code printed on the
splicing material.
Preferably, the auxiliary cutter is operable to cut the region of
the splicing material such that a width at a forward end of an upstream one of the
short films is contained within a width of the downstream one of the short films.
With this construction, the forward end of the upstream film is completely contained
within the width at the rear end of the downstream film. Consequently, the forward
end of the upstream film remaining connected to the splicing material after cutting
the long film is positively prevented from obstructing the transport.
In a preferred embodiment of the invention the main cutter and the
auxiliary cutter are integrated. Then, the two cutters may share components and
controls to reduce cost. This provides a further advantage of requiring reduced
space.
Conversely, the auxiliary cutter may be formed separately from the
main cutter. This allows the auxiliary cutter to be added to an existing apparatus
or to be offered as an option.
Other features and advantages of the invention will be apparent from
the following description of a preferred embodiment of the invention, as illustrated
in the accompanying drawings.
BRIEF DESCRIPTION OF THE DRAWINGS
- Fig. 1 is a perspective view an automatic exposing and printing apparatus according
to the present invention.
- Fig. 2 is a schematic view showing a principal portion of the automatic exposing
and printing apparatus.
- Fig. 3 is a schematic view showing the same principal portion of the automatic
exposing and printing apparatus.
- Fig. 4 is a schematic view of photographic films joined with splicing tape.
- Fig. 5 is a schematic view of a leader region of a long film.
- Fig. 6 is a perspective view of a lower portion of a trash box.
- Figs. 7A and 7B are schematic views showing details of a transport line branching
device.
- Figs. 8A and 8B are schematic views showing a shape to which photographic films
are cut by a cutting device.
- Fig. 9 is a schematic view of a main cutter and an auxiliary cutter.
- Figs. 10A and 10B are schematic views of the auxiliary cutter.
- Fig. 11 is a persipective view of a modified example of a lower portion of a
trash box.
- Fig. 12 is a front view of the modified example of the lower portion of the
trash box.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS
A photographic film processing apparatus according to the present
invention will be described with reference to the drawings.
Fig. 1 shows an automatic exposing and printing apparatus to which
the photographic film processing apparatus according to the present invention is
applied. The exposing and printing apparatus contains an image information reading
unit 20 and an exposing and printing unit 30 which will be described later. Image
information on developed negative film 10 wound on a reel 1 is read by the reading
unit 20 and shown on a display 2. Based on the information shown, the operator operates
a keyboard 3 to cause the exposing and printing unit 30 to expose printing paper
in a proper amount of exposure. After a subsequent printing process, finished prints
are discharged to a print collector 4.
As shown in Figs. 2 and 3, the reel 1 has, wound thereon, developed
photographic film 10 in a plurality of orders from clients. The term "film 10" as
used in this specification has two meanings. One meaning is short developed photographic
films 10a included in the orders from clients. The other meaning is a long photographic
film 10b formed by successively connecting the rear end 11 of each short developed
film 10a in one order to the forward end 12 of another short developed film 10a
with a splicing tape 13 which is one example of joining materials (see Fig. 4).
The long film 10b may be cut order by order again prior to an exposing and printing
process, as necessary. The short films made by cutting the long film 10b are also
referred to herein as short films 10a. As shown in Fig. 5, the long film 10b has
a leader 15, which itself is well known, connected to the forward end thereof.
A dancer 5 is disposed adjacent a support axis of the reel 1 for eliminating
a slack of photographic film 10. A film transport device 40 extends from the reel
1 toward the image information reading unit 20 and exposing and printing unit 30,
which are examples of exposure processing units, for transporting the photographic
film 10, more particularly the long film 10b, wound on the reel 1.
The film transport device 40 includes a first transport portion 40a
and a second transport portion 40b. The first transport portion 40a includes a first
drive roller 42 driven by a pulse motor 41, two idle rollers 43 in contact with
the first drive roller 42, a second drive roller 45 driven by a DC motor 44, an
idle roller 46 in contact with the second drive roller 45, a direction changing
idle roller 47, and a pair of idle roller 48 in contact with each other, for transporting
the photographic film 10 toward the image information reading unit 20.
A film cutting device 6 described in detail later is disposed on the
transport line of the first transport portion 40a. The film cutting device 6 cuts
the long film 10b into short films 10a each corresponding to one order, and cuts
off part of the film.
The second transport portion 40b of the transport device 40 transports
the short films 10a from the film cutting device 6 to the image information reading
unit 20. The second transport portion 40b includes a third drive roller 49a, an
idle roller 49b, and a pair of idle rollers 49c.
A plurality of sensors are arranged along the transport line of the
transport device 40. These sensors include, for example, a film sensor 81 disposed
upstream of the first drive roller 42 for detecting the photographic film 10, and
an end sensor 82 disposed downstream of the first drive roller 42 for detecting
splice regions of the photographic film 10 joined with the splicing tape 13, i.e.
for detecting rear ends 11, forward ends 12 or splicing tapes 13. Each of these
sensors 81 and 82 is formed of a light emitter and a light receiver.
Downstream of the end sensor 82 and upstream of the film cutting device
6 is an image frame distinguishing device 83 which is one example of film propriety
distinguishing devices for determining whether or not the photographic film 10 in
each order is fit for processing by the exposing and printing unit 30. The image
frame distinguishing device 83 includes two image frame sensors 83a and 83b each
formed of a light emitter and a light receiver, for detecting image frames on the
photographic film 10 based on the quantities of light received after being transmitted
through the film 10, and determining lengths of the respective image frames on the
film 10. Specifically, the image frame distinguishing device 83, based on frame
edge detection signals, measures longitudinal and transverse dimensions of the image
frames in each order to determine whether the image frames are full size, panorama
size or half size.
A discharge device 7 is disposed downstream of the film cutting device
6 for removing film portions adjacent the leader 15 and splicing tapes 13 cut by
the cutting device 6 from the transport line.
The discharge device 7 includes a trash box 50 disposed below the
transport line, a pivotable guide 50a defining a slit for allowing passage of the
film, and a solenoid, not shown, for driving the guide 50a. The guide 50a is movable
between a posture extending along the transport line, as shown in solid lines in
Fig. 2, for guiding the film 10, and a posture crossing the transport line, as shown
in phantom lines, for guiding cut film fragments into the trash box 50. As shown
in Fig. 6, the trash box 50 substantially is a rectangular parallelepiped with an
open top. Thus, a discharge passage 51 of rectangular cross section is formed below
the transport line. The discharge passage 51 has a width, as seen in the moving
direction of the leader 15, corresponding to or slightly larger than the width of
the leader 15, so that the leader 15 in descent may remain substantially in the
same posture.
The leader 15 shown in Fig. 5 has a larger width than the film 10.
The above is applicable also where a leader having the same width as the film 10
is used.
A partition 52 is formed in an intermediate position of the discharge
passage 51 for allowing passage of small fragments of the film 10 cut from adjacent
the splicing tapes 13 but prohibiting passage of the leader 15.
The partition 52 is in the form of a plate extending parallel to the
film transport line and mounted in vertical posture right under a transversely middle
position of the transport line. As shown in Fig. 6, the partition 52 defines a downwardly
curved upper edge for contacting the leader 15. The curved edge has a lowermost
point disposed adjacent an opening 53 described hereunder, to guide the leader 15
smoothly.
The opening 53 is formed directly above the partition 52 for passing
the leader 15.
The trash box 50 is vertically divided into two parts in a position
slightly above the opening 53, the lower part being detachably attached to the upper
part. This construction facilitates disposal of the film fragments collected in
the lower part.
A loop tank 8 is disposed downstream of the discharge device 7. The
loop tank 8 defines a loop storing space 8a for storing the photographic film 10
in loop form. An open/close loop guide 8b is disposed in an opening of the loop
tank 8, which is driven by a DC motor not shown.
Downstream of the loop tank 8 and second drive roller 45 is a forward
end sensor 84 including a light emitter and a light receiver for detecting the forward
end of the photographic film 10. Downstream of the forward end sensor 84 is a transport
line branching device 90 acting as a process averting device for passing, without
being processed by the image information reading unit 20 and exposing and printing
unit 30, photographic film 10 in each order determined unfit by the image frame
distinguishing device 83.
The transport line branching device 90 branches the photographic film
10 in each order determined unfit, off the second transport portion 40a of the transport
device 40. As shown in detail in Figs. 7A and 7B, the branching device 90 includes
a through passage 91 acting as a branch line extending obliquely upward through
a frame disposed on the transport line of the transport device 40, a line switching
element 93 pivotably attached to an axis 92 inside the through passage 91, and a
solenoid 94 for driving the line switching element 93. A fourth drive roller 96
driven by a DC motor 95 is disposed adjacent a terminal end of the through passage
91. The axis 92 supports an idle roller 97 in contact with the fourth drive roller
96. Thus, the photographic film 10 entering the through passage 91 is forcibly transported.
A first rear end sensor 85 and a second rear end sensor 86 are arranged along the
transport line of the transport device 40 upstream and downstream of the through
passage 91, respectively, for detecting the rear end of the photographic film 10.
The image information reading unit 20 and exposing and printing unit
30 are arranged in the stated order downstream of the transport line branching device
90. The image information reading unit 20 and exposing and printing unit 30 both
have known constructions. The image information reading unit 20 includes a lamp
21, a mirror barrel 22 and an image pickup 23. The exposing and printing unit 30
includes an exposure lamp 31, adjusting filters 32, a mirror barrel 33, optics 34
and a shutter 35 for enlarging and printing the images of the photographic film
10 on printing paper 9.
The film cutting device 6 includes a main cutter 60 and an auxiliary
cutter 70. The main cutter 60 cuts the long film 10b along a transverse cutting
line "k", as shown in Fig. 8A, at the forward end of each succeeding short film
10a, so that the splicing tape 13 remains on the rear end 11 of the preceding short
film 10a. The auxiliary cutter 70 cuts, along arcuate cutting lines "m" as shown
in Fig. 8B, the rear end 11 of the preceding film 10a and the forward end 12 of
the succeeding film 10a at opposite lateral regions across the splicing tape 13.
An order in which the main cutter 60 and auxiliary cutter 70 are operated to cut
the long film 10b may be determined according to limitations such as an arrangement
of the cutters. The present invention is not limited to a particular order. However,
in the example shown in Figs. 8A and 8B, the auxiliary cutter 70 is operated first
to cut off the opposite sides of the film, and then the main cutter 60 is operated
to cut transversely of the film.
As schematically shown in Fig. 9, the main cutter 60 includes a vertically
movable upper blade 61 extending across the film transport line, and a lower blade
62 fixed on the transport line. When the upper blade 61 is lowered to the lower
blade 62, the film is cut at the cutting line "k" shown in Fig. 8A. Further, the
leader 15 is cut off at cutting line "j" shown in Fig. 5. The auxiliary cutter 70
includes a pair of vertically movable upper blades 71a and 71b arranged at opposite
sides of the film transport line, and a pair of right and left lower blades 72a
and 72b fixed on the transport line. When the upper blades 71a and 71b are lowered
to the lower blades 72a and 72b, respectively, the opposite sides of the film are
cut arcuately at the cutting lines "m" shown in Fig. 8B. As shown in Fig. 8A, the
short films 10a may be interconnected such that the rear end 11 of the preceding
film 10a and the forward end 12 of the succeeding film 10a are staggered sideways
(a maximum amount of displacement may be guessed from experience). The arcuate cuts
noted above are made to such an extent that the width of the forward end 12 remaining
attached to the splicing tape 13 after the cutting operations of the main cutter
60 and auxiliary cutter 70 is contained within the width of the preceding film 10a.
The auxiliary cutter 70 has a specific construction as shown in Figs.
10A and 10B. The upper blades 71a and 71b are secured to a lift block 73 fixed to
a lift pin 74. The lift pin 74 has an upper cam follower 75 and a lower cam follower
76 spaced from each other. An eccentric cam 77 is disposed in a space between the
upper cam follower 75 and lower cam follower 76 to be rotatable by a motor 78. A
frame 79 is provided for supporting the lift block 73 and guiding the lift pin 74.
The eccentric cam 77 in rotation contacts the upper cam follower 75 and/or the lower
cam follower 76 to raise the lift pin 74, and thus the upper blades 71a and 71b.
With a further rotation of the eccentric cam 77, the lift pin 74 is lowered and
so are the upper blades 71a and 71b. By suitably selecting a shape of the eccentric
cam 77, one rotation of the motor 78 produces a vertically reciprocating motion
of the upper blades 71a and 71b. Such a raising and lowering mechanism is known
in the art and will not particularly be described herein.
The main cutter 60 has substantially the same construction as the
auxiliary cutter 70, and will not be described. Naturally, other types of raising
and lowering mechanism may be employed, and the present invention is not limited
to a particular type.
Where the main cutter 60 and auxiliary cutter 70 are integrated, the
lower blades 62 and 72 may be formed together, and the shape of the eccentric cam
may be devised to share the motor 78. Such integration will contribute to reduced
cost.
As shown in Fig. 8A, the splicing tape 13 is allowed to remain on
each preceding short film 10a when the cutting device 6 is operated to cut the long
film 10b into short films 10a for respective orders. The splicing tape 13 includes
ID information, preferably in the form of a bar code 14, printed thereon for identifying
the preceding film 10a. The splicing tape 13 is retained in order to use this information
in subsequent processing of this film 10a.
Operations of this automatic exposing and printing apparatus will
be described next. First, the reel 1 on which long developed photographic film 10b
is wound is set in place, and the forward end of the long film 10b or the leader
15 attached to the forward end is passed around the dancer 5 and inserted into the
film transport device 40.
When the film sensor 81 detects the long film 10b, the pulse motor
41 is operated to rotate the first drive roller 42 to transport the long film 10b,
and the solenoid of the discharge device 7 is operated to swing the guide 50a to
the state shown in phantom lines in Fig. 2.
When, in this state, the end sensor 82 detects a joint in the long
film 10b, the main cutter 60 is operated to cut off unwanted parts of the long film
10b such as the forward end and the leader 15. At this time, the forward end and
the leader 15 of the long film 10b are guided by the guide 50a to extend downward.
Thus, the unwanted, cut parts fall into the trash box 50. Subsequently, the guide
50a is returned to the state shown in solid lines in Fig. 2. The long film 10b with
the forward end cut off advances through the slit formed in the guide 50a to the
second drive roller 45. The second drive roller 45 advances the long film 10b further
on to the forward end sensor 84.
When the forward end sensor 84 detects the forward end of the long
film 10b, the DC motor 44 is stopped to stop the second drive roller 45. The loop
guide 8b of the loop tank 8 is swung to the position shown in a phantom line in
Fig. 2 to open the loop tank 8.
In this state, the first drive roller 42 continues rotating to transport
the long film 10b. Consequently, as shown in Fig. 3, the long film 10b slacks downward
to form a loop inside the loop storing space 8a. When the end sensor 82 detects
a next joint, the first drive roller 42 is stopped rotating. Then, the auxiliary
cutter 70 is operated to cut off opposite film portions laterally of the splicing
tape 13 at the cutting lines "m" in Fig. 8B. After rotating the first drive roller
42 by a predetermined amount, the main cutter 60 is operated to cut the film at
the cutting line "k" in Fig. 8A. This results in the photographic film 10a in one
order cut with the corresponding splicing tape 13 remaining attached thereto. The
bar code 14 printed on the splicing tape 13 is read by a bar cord reading sensor
87 disposed in a suitable position on the transport line, to be used in subsequent
film processing.
The second drive roller 45 is rotated again to transport the photographic
film 10a in this one order. When the rear end of this film 10a moves past the forward
end sensor 84, the loop guide 8b is swung back to the position to close the loop
tank 8.
The photographic film 10a in one order cut off the long film 10b has
already been checked by the image frame distinguishing device 83 whether or not
the film 10a is fit for processing by the exposing and printing unit 30. That is,
it has been determined whether the image frames on this film 10a are full size or
panorama size suited to the exposing and printing unit 30, or half size not suited
thereto. If the frames have the sizes suited to the exposing and printing unit 30,
the film 10a is transported to the image information reading unit 20 at the next
stage. Necessary information is read and shown on the display 2. Subsequently, the
exposing and printing unit 30 prints the image frames on the printing paper 9. At
a point of time the rear end of the photographic film 10a passes the second rear
end sensor 86, the first drive roller 42 is driven again to repeat the same operation.
When the image frames on the photographic film 10a have the size not
suited to the exposing and printing unit 30, the solenoid 94 is operated to drive
the line switching element 93. The line switching element 93 guides the film 10a
into the through passage 91. The DC motor 95 is operated to rotate the fourth drive
roller 96 to discharge the film 10a from the transport line. At a point of time
the rear end of the film 10a passes the first rear end sensor 85, the first drive
roller 42 is driven to repeat the same operation.
Other embodiments will be described hereinafter.
The foregoing embodiment includes the image information reading unit
20 and exposing and printing unit 30 as examples of exposure processing units. These
exposure processing units include all processing units needed to expose and print
the images of photographic film on printing paper.
Only the image frame distinguishing device 83 has been described as
an example of film propriety distinguishing devices. In extreme cases of over-exposure
or under-exposure, for example, film need not be transmitted to the image information
reading unit 20 or exposing and printing unit 30. A device may be provided for distinguishing
this type of film, and such a device also is included in the film propriety distinguishing
devices.
Further, the transport line branching device 90 is shown as an example
of process averting devices. Another example is a device for taking an appropriate
measure to omit the exposing and printing process for photographic film 10 unsuited
to the exposing and printing unit 30.
The image frame distinguishing device 83 may include notch sensors
for detecting notches cut in lateral edges of photographic film 10, in place of
the image frame sensors 83a and 83b described in the foregoing embodiment. That
is, the image frame distinguishing device 83, based on detection signals from the
notch sensors, may measure longitudinal dimensions of image frames in each order
to determine whether the image frames are full size, panorama size or half size.
The foregoing embodiment includes the transport line branching device
90 acting exclusively as a process averting device. However, the discharge device
50 for removing unwanted parts of film from the transport line may be used also
as the process averting device. That is, photographic film 10 determined by the
image frame distinguishing device 83 to be unfit may be dropped into the trash box
50 by operating the guide 50a. In this case, the photographic film 10 and unwanted
parts of the film may be sorted for collection.
In the foregoing embodiment, the discharge passage 51 includes the
partition 52 formed of a single plate for deflecting the leader 15. The partition
may have various shapes such as a bar shape, or a lattice shape for allowing passage
of film fragments cut from regions adjacent the splicing tape 13.
In the foregoing embodiment, the opening 53 of the discharge passage
51 has a lower edge at equal height to the upper edge of the partition 52 at the
end adjacent the opening 53. As shown in Fig. 11, the upper edge of the partition
52 at the end adjacent the opening 53 may be at a higher level than the lower edge
of the opening 53 of the discharge passage 51. Then, the leader 15 may be discharged
smoothly without the forward end thereof being caught by the lower edge of the opening
53.
In the foregoing embodiment, the partition 52 is mounted in vertical
posture right under a transversely middle position of the film transport line (on
the dot-and-dash line in Fig. 12). However, as shown in Fig. 12, the partition 52
may be displaced sideways by a distance W from the dot-and-dash line position. With
this construction, when film fragments cut from regions adjacent the splicing tape
13 fall in horizontal posture and collide with the upper edge of the partition 52,
the film fragments rest asymmetrically thereon. As a result, the film fragments
quickly become tilted and fall down the discharge passage 51. That is, the film
quickly become tilted and fall down the discharge passage 51. That is, the film
fragments cut from regions adjacent the splicing tape 13 fall smoothly past the
partition 51.