JPH05333442A - Instant photographic device - Google Patents

Abstract

PURPOSE:To evade the occurrence of jamming whose countermeasure requires much time, to improve the working efficiency of an operator and to enhance the using efficiency of a device by stopping the carrying of a negative film whose sheet length is shorter than carrying feasible length halfway. CONSTITUTION:A control part 401 which judges the length of the sheet drawn from a negative film cartridge based on detection signals from the various kinds of sensors in a sensor group 411 and executes such control that the carrying of the sheet is stopped when it is judged that the length of the sheet drawn from the negative film cartridge is shorter than the carrying feasible length is provided.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a peel-apart type instant photographic device in which a photosensitive sheet is housed in a container inside the device, and more specifically, a length of the photosensitive sheet pulled out from the container is increased. The present invention relates to an instant photographic device that controls conveyance of a photosensitive sheet according to the size.

[0002]

2. Description of the Related Art In a peel apart type instant photographic device, a photosensitive sheet (negative film) and an image receiving sheet (positive sheet) are used in combination. In the peel-apart type camera (instant photographic device), since the supply (negative film and positive sheet) used is small, a negative film and a positive sheet are combined in advance and used as a pack film.

However, such a pack film is
As the size increases, the handling becomes worse and there is a drawback that it becomes impractical. Therefore, in a large-sized instant photographic device that uses a relatively large supply, a method of separating the negative film and the positive sheet and mounting them separately on the device (hereinafter referred to as an independent mounting method) is adopted. ing. In the independent placement method, the positive sheet is usually used as a positive sheet assembly with attached pods containing a developer and accessory parts such as a trap mask for holding the excess developer after spreading.

In an independent placement type instant photographic apparatus, generally, a positive sheet is set outside the apparatus because it is not photosensitive, and since a negative film has photosensitivity, a long negative film is rolled. Then, it is set in the apparatus by loading it into the cartridge. Therefore, an instant photographic device generally has a function of detecting the length of the negative film pulled out from the cartridge. With this function, the negative film is pulled out from the cartridge by the length of one sheet each time image formation is performed (the length used for one image formation), cut and used, and pulled out from the cartridge. When the length of the negative film formed is less than the length of one sheet, control is executed so as not to form an image.

In the image formation in such an instant photographic apparatus, first, a negative film is pulled out from a cartridge and exposed, and then the exposed negative film and a positive sheet are superposed on each other to remove a developer enclosed in a pod. It is performed by spreading and leaving it in that state for a while (the developing process is executed during this). An image is obtained by peeling the negative film from the positive sheet after the completion of this development process.

[0006]

However, according to the instant photographic apparatus in which the negative film (photosensitive sheet) is set in the conventional apparatus, the length of the negative film pulled out from the cartridge is detected to cut the film. However, since the conveyance control according to the length of the negative film pulled out from the cartridge is not performed, if the length of the negative film pulled out from the cartridge is shorter than the transportable length of the device, the negative film However, there is a problem in that a jam occurs at a position that is difficult to remove due to the continuous conveyance of the paper, which takes time to clear the jam and reduces the work efficiency of the operator.

In the instant photographic device, the negative film is not exposed to light (stray light) entering the device, so that if a negative film shorter than the transportable length is transported, the user may remove it. Negative film can get into places where it can't, which can have to rely on service personnel and sometimes even damage equipment. In addition, a jam that takes a long time to deal with increases the time during which the device cannot be used, and thus reduces the use efficiency of the device.

The present invention has been made in view of the above, and by stopping the conveyance of a negative film whose sheet length is shorter than the conveyable length, the occurrence of a jam that takes a long time to cope with is avoided, It is an object of the present invention to improve the working efficiency of an operator and the usage efficiency of the device.

[0009]

In order to achieve the above object, the present invention uses a combination of a photosensitive sheet and an image receiving sheet, is arranged in the apparatus, and contains a photosensitive sheet. In a peel-apart type instant photographic device, which is provided with a sheet length detecting means for detecting the length of the photosensitive sheet pulled out from the storage container and is used by cutting the photosensitive sheet pulled out from the storage container, It is an object of the present invention to provide an instant photographic device equipped with a control means for executing stop control for stopping the conveyance of a photosensitive sheet based on the detection result.

In the above structure, the control means stops the conveyance of the photosensitive sheet when the sheet length detection means determines that the length of the photosensitive sheet pulled out from the storage container is shorter than the conveyable length. It is desirable to let Further, it is desirable that the control means, when the conveyance of the photosensitive sheet is stopped on the basis of the length detected by the sheet length detection means, perform notification control to notify that effect.

[0011]

In the instant photographic apparatus of the present invention, when it is judged that the length of the negative film (photosensitive sheet) pulled out from the cartridge is shorter than the transportable length, the transport of the negative film is immediately stopped, and to that effect. Notify the operator.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of an instant photographic device according to the present invention will be described below with reference to [1] configuration of positive sheet assembly, [2] configuration of negative film and negative film cartridge, [3] configuration and operation of entire device, 4] A schematic block diagram and [5] control operation of the control unit will be described in this order.

[1] Structure of Positive Sheet Assembly In this embodiment, a positive sheet (image receiving sheet) is provided with a pod in which a developer is enclosed, and an accessory such as a trap mask for holding the excess developer after spreading. Used as a positive sheet assembly.

FIGS. 1A and 1B show the structure of the positive sheet assembly 100. As shown in the figure, the positive sheet assembly 100 includes a black leader 102 attached to the front end portion of the positive sheet 101 on the image receiving surface side,
The pod 103 that contains the developer and is attached on the reader 102, and the image area of the positive sheet 101 (see FIG.
On the front mask 104, the both side masks 105, and the trap mask 106, which are arranged in order to improve the image of the end of the (a × b region shown in (a)), The rail member 107 is attached to the rail member 107.

Here, the developer flowing out from the pod 103 can be uniformly spread on the positive sheet 101 with the same thickness as the rail member 107 and both side masks 105.

The amount of the developer is larger than that required for image formation so that the developer reaches the trailing edge of the image area sufficiently.
Enclosed inside. The excess developer is evenly spread to the rear edge of the image area, and then the trap mask 106 (see FIG. 1A).
Portion D) and a negative film 200 described later (see FIG. 2).
(D'portion in (a)). This prevents excess developer from leaking out into the apparatus and adhering to the developing roller, the conveying path, and the like to be contaminated.

As shown in FIG. 1B, the reader 102 has a mark M1 having three positive sheet type identification codes.
It is formed by M2 and M3. In this embodiment, the marks M1, M2 and M3 are formed by punching holes. Positive sheet assembly 1
00 has a structure in which the pod 103 is attached on the reader 102 as shown in FIG. 1A, so that the color of the reader 102 is set to black to be compared with the color of the pod 103 (usually white). Therefore, the detection accuracy is improved.

[2] Construction of Negative Film and Negative Film Cartridge Negative film (long photosensitive sheet) 20 according to this embodiment
As shown in FIGS. 2A and 2B, 0 is wound in a roll shape without using the core member. Negative film 2
Reference numeral 00 denotes a photosensitive strip-shaped material containing a long-length (for example, 36 sheets can be photographed) silver salt, and is wound in a roll shape with the latent image forming surface (photosensitive surface) inside, and the negative film cartridge 201 ( (See FIG. 3).

The negative film 200 is a light room (semi-dark room),
The negative film cartridge 20 in the state shown in FIG.
2 at least, so that at least the region shown by hatching in FIG. 2B (the leading end and the trailing end of the negative film 200)
Will be exposed. For this reason, in this embodiment, as shown in FIG. 2C, the negative film 200 is provided with the light-shielding paper 200a having the marks 200b at the front and rear ends thereof. Minimize wasted parts when loading into.

The negative film cartridge 201 is shown in FIG.
As shown in FIG. 3, the resin is molded into a cylindrical shape so as to include the roll-shaped negative film 200, and is divided into an upper container 201a and a lower container 201b in order to facilitate molding and loading of the negative film 200. It is the configured configuration.

When the negative film 200 is loaded in the negative film cartridge 201, a lower container 201b is installed so that the leading end of the roll-shaped negative film 200 is located outside the negative feeding part 204 by several mm. Place it. Then, the upper container 201a is covered, and the upper and lower containers 201a and 201b are joined by the fitting portion 202. The negative film 200 loaded in the negative film cartridge 201 is guided along the negative guiding portion 203, and is fed from the negative feeding portion 204 to the outside by the pull-out rollers 312a and 312b. In addition, on the side surface of the container 201a,
Mark portions M4, M5 indicating the type of the negative film 200
M6 is provided.

Here, the sensor S8 arranged near the negative feeding section 204 is an infrared reflection type sensor, and is a sheet (negative film 20) fed from the negative feeding section 204.
0 or presence or absence of light-shielding paper 200a), and negative film 2
00 and the light-shielding paper 200a (to distinguish from the magnitude of the detection signal). In this embodiment, a mark 200b having a reflectance greatly different from that of the negative film 200 is provided at the position detected by the sensor S8 on the back surface of the shading paper 200a.
By providing (see FIG. 2C), the shading paper 200
It is made easy to distinguish between a and the negative film 200.

[3] Overall Configuration and Operation of Apparatus FIG. 4 is a schematic cross-sectional view showing the overall configuration of the instant photographic apparatus according to this embodiment. An optical system unit 301 for forming an image on a position (exposure surface) and a negative film 200 are conveyed and exposed at the predetermined position, and are further aligned with the positive sheet assembly 100 so as to overlap with each other, and a developer is spread between the positive film assembly 100 and the positive sheet assembly 100. The sheet assembly 100 includes a transport unit 302 that transfers and forms an image.

The optical system unit 301 includes a contact glass 303, a first traveling body 3 including a first mirror and a light source.
04, a second traveling body 305 including a second mirror and a third mirror, a third traveling body 307 including a lens 306, a fourth mirror, and a fifth mirror, and a sixth mirror 308.

Here, a fluorescent lamp 408 (see FIG. 5) is used as a light source included in the first traveling body 304, and a document placed downward on the contact glass 303 is moved (scanned) in parallel with the contact glass 303. While irradiating. At this time, in order to keep the optical path length constant, the second traveling body 305 is scanned in the same direction at a speed half that of the first traveling body 304. Further, the configuration is such that the magnification and the conjugate length at the time of zooming are adjusted by moving the lens 306 and the third traveling body 307.

The reflected light from the original is, as shown in the figure,
It is reflected by the second and third mirrors, and the lens 30
Slit exposure is performed at the exposure position A through the sixth, fourth, fifth and sixth mirrors.

The conveying unit 302 includes a photosensitive negative roll film (negative film 200) feeding portion, a negative film cutter portion for cutting the fed negative film 200, and a negative film feeding / transporting the negative film 200. It is composed of an exposure section, a positive sheet assembly transport section, and a development section. Below, negative film 2
00 (not shown), a negative roll film feeding unit, a negative film cutter unit, and a negative film transport / exposure unit will be described in detail.

The negative film 200 stored in a roll in the negative film cartridge 201 is conveyed by the pull-out rollers 312a and 312b onto the guide plate 314 between the rotary blade 313a and the fixed blade 313b (cutter), and the intermediate roller. It is sent to 315a and 315b. A sensor S2 (infrared reflection type sensor) for detecting a jam of the sheet pulled out from the negative film cartridge 201 is arranged near the intermediate roller pair 315a, 315b.

When the leading edge of the conveyed negative film 200 is detected by the sensor S1 at the exposure position A (or a predetermined time after the detection), the first traveling body 304 and the second traveling body 305 start scanning. Then, after the negative film 200 is nipped by the intermediate rollers 315a and 315b, the exposure / latent image forming process is executed at the exposure position A on the guide plate 314.

Here, when the transport speed of the negative film 200 at the time of exposure / latent image formation is V _N , the running speed of the first running body 304 is V ₁ , and the copy magnification is m, the negative film 200
The transport speed V _N is controlled so as to satisfy the relationship of V ₁ = V _N × 1 / m.

The exposure position A is a flat surface over the slit area, and the drawing rollers 312a, 31a
2b and the nip height of the intermediate rollers 315a and 315b, or higher than that. Further, the intermediate rollers 315a and 315b and the pull-out roller 312
The peripheral speeds of a and 312b are substantially the same, and after a predetermined time (after being nipped by the intermediate rollers 315a and 315b or when the exposure is started) after the negative film 200 is detected by the sensor S1, the pull-out roller 312.
The driving of a and 312b is stopped, and it becomes free with an appropriate load. As a result, the negative film 200 can be conveyed on the exposure position A with a slight tension and in a state of being in close contact with the guide plate 314.
The optical path length to the surface and the transport speed can be kept constant.

The negative film 200 which has been exposed / latent image formed for a certain length is temporarily stopped, and then the rotary blade 313 is used.
When a rotates in contact with the fixed blade 313b, it is cut into a sheet. The stop timing of the negative film 200 is determined by measuring the time t after the sensor S1 detects the leading edge of the negative film 200.

Therefore, the trailing end portion of the cut negative film 200 becomes a portion where exposure / latent image formation cannot be performed (in other words, exposure / latent image formation cannot be performed). Specifically, at least the trailing edge portion of the negative film 200 corresponding to the distance from the exposure position A to the tip of the fixed blade 313b (this distance is G) is unused, that is, wasted unnecessarily. It becomes a part. Therefore, the exposure position A and the cutter are set so that the distance G becomes smaller than the distance D ′ (see FIG. 2) from the rear end of the positive sheet assembly 100 to the rear end of the image portion transferred onto the positive sheet 101. By disposing the (rotary blade 313a and fixed blade 313b), waste of an unnecessary portion (rear end portion) of the negative film 200 which is not used for image formation is reduced.

Similarly, the leading end portion of the cut negative film 200 is at least exposed from the exposure position A to the intermediate roller 315.
Although exposure / latent image formation cannot be performed over a length greater than the distance to a, 315b (this distance is H), the distance H
From the tip of the negative film 200 to the negative film 20.
Exposure position A and the intermediate roller 3 so as to be smaller than the distance C ′ (see FIG. 2) to the tip of the latent image portion formed on the image 0.
By disposing 15a and 315b, waste of the negative film 200 can be reduced.

The cut negative film 200 is turned about 180 ° by the rollers 316a and 316b and the guide member 317, and then the guide plates 318a and 318.
It is guided by b, and is further conveyed by the roller 320 until its leading end hits the registration roller 321 (here, in a stopped state). Here, the path length between the intermediate rollers 315a and 315b to the rollers 316a and 316b is the minimum transportable length L1 of the apparatus.

Next, the transport operation of the positive sheet assembly 100 will be described, and the configuration of the positive sheet assembly transport section will be described in detail. Actually, the transport operation of the positive sheet assembly 100 is executed before the transport / exposure / cut operation of the negative film 200 described above. The positive sheet assembly 100 is configured to be manually inserted one by one to the left side in the figure along the guide plate 311 on the lower right side of the apparatus main body.

When the positive sheet assembly 100 is inserted along the guide plate 311, and the tip of the positive sheet assembly 100 is detected by the sensor S5, the insertion roller pair 322 starts to rotate. The roller of the insertion roller pair 322 is the developer pod 10 attached to the tip of the positive sheet assembly 100.
3 (see FIG. 1 (a)) so as not to crush the pod 103
It is arranged so as to grip only the outer ends. The positive sheet assembly 100 includes an insertion roller pair 322.
As a result, the sheet is conveyed between the guide plates 323a and 323b, stopped at a predetermined position and put in a standby state, and the printing operation becomes possible. This stop timing is obtained by counting the time t ′ after the sensor S6 detects the leading end of the positive sheet assembly 100.

Here, when a predetermined print switch is pressed, the above-described conveying, exposing and cutting operations of the negative film 200 are executed. Registration roller 32 stopped
The negative film 200 that has abutted against No. 1 is bent by a certain amount between the guide plate 319 and the guide plate 318b by the conveying force of the roller pair 320. After the negative film 200 is bent by a predetermined amount, the guide plate 32 is rotated by the rotation of the registration roller 321.
It is conveyed between 4a and 324b. Registration roller 321
The rotation start of is determined by counting the time after the sensor S3 detects the leading edge of the negative film 200. By bending the negative film 200 in this manner, the leading edge of the negative film 200 is moved to the registration roller 3
The skew correction is performed by following the nip 21. The leading edge of the negative film 200 conveyed by the rotation of the registration rollers 321 is detected by the sensor S4, and is conveyed to the nip between the developing rollers 325a and 325b. According to the timing from the detection of the sensor S4, the insertion roller pair 322 first rotates to abut against the developing rollers 325a and 325b that stop the positive sheet assembly 100, and the skew correction is performed similarly to the negative film 200. After that, the developing rollers 325a and 325b start to rotate.

Next, the positive sheet assembly 100 waiting at a predetermined position is conveyed first, and then the leading edge of the negative film 200 reaches the nip between the developing rollers 325a and 325b by the rotation of the registration roller 321, both of which are conveyed. It is conveyed at the peripheral speed of the developing rollers 325a and 325b. At this time, a deviation J occurs between the positive sheet assembly 100 and the tip of the negative film 200, and this deviation J is controlled to be at least smaller than C in FIG.

The developing rollers 325a and 325b rotate while cleaving the pod 103 to allow the developer to flow out and to spread the developer flowing between the positive sheet assembly 100 and the negative film 200. Developing roller 325
Positive seat assembly 10 that has passed a and 325b
0 and the negative film 200 have a tray 326 and a lid 3
And is discharged to a dark box tray composed of 27. In the dark box tray, the positive sheet 101 is made of a transparent material (for example, OH
If the sheet is a sheet for P) or a thin member, it is for preventing the negative film 200 from being exposed to light so that a good image cannot be obtained.
28 is rotatably and detachably supported by a shaft 28. Further, a sensor S7 for detecting the negative / positive joint body conveyed from the developing rollers 325a and 325b is provided.

The length L of the pod 103 on the positive sheet assembly 100 in the width direction (see FIG. 1A)
Is equal to or shorter than the width b of the image area so that the roller is not pressed against a roller or the like to be broken during transportation. Therefore, after the pod 103 is cleaved at the F portion, a certain distance (distance indicated by E in FIG. 1A) is required before it extends to the image area width b. In addition, as described above, the negative film 200
The deviation J between the positive sheet assembly 100 and the positive sheet assembly 100 may be shorter than the distance C from the tip of the positive sheet assembly 100 to the cleavage portion F of the pod 103.
Therefore, the distance C ′ from the leading edge of the negative film 200 to the leading edge of the latent image portion shown in FIG. 2A may be at least longer than the distance E from the cleavage portion of the pod 103 to the leading edge of the image forming portion.

[4] Schematic block diagram Next, referring to the schematic block diagram of the control system shown in FIG.
The configuration centering on the control unit 401 will be described. Control unit 40
1 is a switching power supply 4 for supplying power to the apparatus main body.
02, an operation unit 403 for displaying messages and key inputs, a main motor 404 serving as power for driving the negative film 200, the positive sheet assembly 100, a cutter, each roller, and the like, a first traveling body 304, A scanner motor 405 for driving the second traveling body 305 and the lens 306, and a mirror at the time of zooming (second traveling body 3
05) A mirror motor 406 for movement, a lens motor 407 for movement of the lens 306 during zooming, a fluorescent lamp 408 as a light source for reading an original image placed on the contact glass 303, and stable light A lamp drive circuit 409 that applies a voltage to the fluorescent lamp 408 so as to irradiate it, and a heater 410 that supplies heat to the fluorescent lamp 408.
A sensor group 411 including the sensors S1 to S8, various clutches and solenoids (clutch / solenoid group) 412 for operation control of various drive systems, and a sensor S9 for detecting the light amount of the fluorescent lamp 408 are connected. ing. Also,
Power is supplied to the switching power supply 402 via a power switch 413 for interrupting the supply of power from a power supply external to the device and a noise filter 414 for removing noise included in the power externally supplied by the power switch 413. Is supplied.

In the above-mentioned configuration, the control unit 401 has a function of measuring time by counting clock pulses, detecting signals of various sensors of the sensor group 411,
Also, various controls such as sequence control are executed based on the time during which the states of the detection signals of the various sensors are maintained.

[5] Control Operation of Control Unit Based on the above configuration, the control operation of the control unit 401 of the instant photographic apparatus according to the present embodiment will be explained with reference to the sheet pulled out from the negative film cartridge 201 (negative film 200 and light-shielding paper). Since some of the 200a are mixed, the control (hereinafter, simply referred to as sheet conveyance control) of conveying according to the length of (hereinafter, described) will be described as an example. This sheet transport control is performed by the transportable length L1 (intermediate rollers 315a, 315b to roller 3) with the minimum sheet length pulled out from the negative film cartridge 201.
When the nip between 16a and 316b is shorter than the gap between nip 16a and 316b (see FIG. 4), the conveyance of the sheet is stopped, so that it is possible to avoid the occurrence of a jam that takes time to deal with such as the sheet is difficult to remove. FIG. 6 is a flowchart showing the sheet conveyance control operation.

First, it is judged whether or not the sheet pulled out from the negative film cartridge 201 is the negative film 200 (S101), and if it is judged to be the negative film 200, a series of processing is ended here, and conversely it is not the negative film 200. Then, it is determined whether or not it is the light-shielding paper 200a (S102). When it is determined that the light-shielding paper 200a is present, whether the sheet length pulled out from the negative film cartridge 201 at the time when the light-shielding paper 200a is next determined is shorter than the image-formable length (regulated length l; see FIG. 2A). If it is determined that the sheet length is not shorter than the specified length l (S103), a predetermined indicator (not shown) of the operation unit 403 is turned on to notify that the negative film 200 has run out. (S104), a series of processing is ended. Here, in step S101, when it is determined that the film is the negative film 200, the series of processes is ended in FIG.
This is because, as shown in (c), light-shielding papers 200a are provided on both ends of the negative film 200. Further, in step S103, the sheet length is determined by the pull-out roller 31.
It is calculated from the time during which 2a and 312b are rotated.

When it is judged that the sheet length is shorter than the specified length l, it is then judged whether or not the sheet length is the minimum transportable length L1 (L1> l) (S105), and the sheet length is transportable length. When it is determined that the sheet is L1 or more, the sheet is further pulled out by a predetermined length, the sheet is cut (S106), the cut sheet is discharged to the outside of the apparatus (S107), and the positive sheet assembly 100 already inserted in the apparatus is removed. It is discharged to the outside of the device (S108), and a series of processing is ended.
Here, in step S106, the further pulling out of the sheet from the negative film cartridge 201 is to cut the sheet for each transportable length L1 and stop the transport of the sheet unless the last length of the sheet matches the transportable length L1. This is because it will happen. Therefore, this makes it possible to increase the probability that all the sheets in the negative film cartridge 201 can be discharged to the outside of the apparatus without stopping the conveyance of the sheets.

When it is determined in step S105 that the sheet length is not longer than the transportable length L1, the sheet is transported from the negative film cartridge 201 until the sheet length reaches the transportable length L1 (S109), and then the sheet length is transported. It is determined whether or not the sheet has been conveyed until the transportable length L1, that is, whether or not the sheet remains in the negative film cartridge 201 until the sheet length reaches the transportable length L1 (S11).
0). If it is determined that there are remaining sheets, step S1
If it is determined that there is no sheet left, the sheet conveyance is immediately stopped (S11).
1), the operator is notified by turning on a display (not shown) that notifies the occurrence of a jam of the operation unit 403 to the effect that the sheet conveyance is stopped (S112), and step S
The processing moves to 108.

Here, the jam processing (that is, the removal of the sheet) when the sheet conveyance is stopped will be described. The conveyance of the sheet is stopped immediately when the sensor S8 detects that there is no sheet pulled out from the negative film cartridge 201. Therefore, the pulled-out sheet is positioned near the pull-out rollers 312a and 312b.
At this time, as shown in FIG. 3, the sheet can be easily reached, so that the jam can be removed easily and quickly.

In step S102, the shading paper 200
If it is determined that the sheet type is not a, that is, if the type of the sheet pulled out from the negative film cartridge 201 cannot be determined, then it is determined whether the sheet length pulled out from the negative film cartridge 201 is the transportable length L1 or more (S113). ), If it is determined that the sheet length is equal to or longer than the transportable length L1, the process proceeds to step S106, the sheet is immediately cut, and the subsequent processes are continued. On the contrary, if it is determined that the sheet length is not longer than the transportable length L1, the sheet is immediately cut in order to minimize the wasted sheet (S114), and the sheet transport is immediately stopped (S11).
5) The jam display is turned on (S116), and the positive sheet assembly 100 is carried out of the apparatus (S11).
7), a series of processing is ended.

Thus, the negative film cartridge 2
According to the sheet length pulled out from 01, when the pulled-out sheet length is shorter than the transportable length L1, by immediately stopping the sheet transport, it is possible to prevent the sheet from jamming at a position where it is difficult to remove. Therefore, the jam processing can be performed easily and quickly without depending on the service person, and the work efficiency can be improved. this is,
Since it is necessary to reduce the time during which the device cannot be used when trouble (such as a jam) occurs, the efficiency of use of the device can be improved. Further, at this time, since the operator is notified of the fact that the sheet is not conveyed until the jam occurs, there is an effect that the waste of time required for conveying the sheet until the jam occurs can be avoided.

In this embodiment, when the sheet length is shorter than the transportable length L1, the sheet transport is immediately stopped, but the position at which the transport is stopped may be changed according to the sheet length. good. As a result, depending on the length of the sheet, it becomes possible for the operator to convey the sheet to a position where it is most easily removed, and it is possible to perform jam processing easily and quickly. Further, at this time, the sheet length becomes shorter than the transportable length L1 not only when the negative film cartridge 201 is out of sheets, so that the sheet is transported in consideration of the presence or absence of the sheet pulled out from the negative film cartridge 201. By stopping the above, the above-mentioned effect can be further enhanced.

Further, when only the negative film provided with the light-shielding paper set to an appropriate length in advance is used, for example, when the sensor S8 detects the light-shielding paper, all the sheets in the negative film cartridge (in this case, the light-shielding light is shielded). Only paper)
It is also possible to pull out and discharge it outside the device. At this time, all the sheets in the negative film cartridge can be discharged to the outside of the apparatus without causing a jam.

[0053]

As described above, according to the present invention, a photosensitive sheet and an image receiving sheet are used in combination, and a storage container is provided in the apparatus for storing the photosensitive sheet and a photosensitive sheet pulled out from the storage container. In a peel-apart type instant photographic device, which is provided with a sheet length detecting means for detecting the length of the photosensitive sheet and is used by cutting the photosensitive sheet pulled out from the storage container, based on the detection result of the sheet length detecting means, Since the control means for executing the stop control for stopping the conveyance of the property sheet is provided, by stopping the conveyance of the negative film whose sheet length is shorter than the conveyable length on the way, the occurrence of jam which takes a long time to cope with is avoided. Therefore, the working efficiency of the operator can be improved and the usage efficiency of the device can be improved.

[Brief description of drawings]

FIG. 1 is an explanatory diagram showing the configuration of a positive sheet assembly used in an instant photographic device according to the present invention.

FIG. 2 is an explanatory view showing the constitution of a negative film used in the instant photographic device according to the present invention.

FIG. 3 is an explanatory view showing the structure of a negative film cartridge mounted inside the instant photographic device according to the present invention.

FIG. 4 is a schematic sectional view showing the overall structure of an instant photographic device according to the present invention.

FIG. 5 is a schematic block diagram showing a control system of the instant photographic device according to the present invention.

FIG. 6 is a flowchart showing a sheet conveyance control operation according to the present invention.

[Explanation of symbols]

200 Negative Film 200a Light-shielding Paper 201 Negative Film Cartridge 312a 312b Drawer Roller 315a 315b Intermediate Roller 316a 31
6b roller 401 control unit 403 operation unit S8 sensor

 ─────────────────────────────────────────────────── ─── Continued front page (72) Inventor Takashi Seto 1-3-6 Nakamagome, Ota-ku, Tokyo Inside Ricoh Co., Ltd. (72) Inventor Fumihiko Hoshi 3-Medium Hall, Nakameisei, Shibata-cho, Shibata-gun, Miyagi Prefecture − 1 (72) Inventor Kazuhisa Takahashi 3-1, Shinmei-do, Nakameisei, Shibata-cho, Shibata-gun, Miyagi Prefecture

Claims (3)

[Claims] 1. A combination of a photosensitive sheet and an image receiving sheet, which is provided in an apparatus and stores the photosensitive sheet, and detects the length of the photosensitive sheet pulled out from the storage container. In the peel-apart type instant photographic device, which is provided with a sheet length detecting means for cutting and uses the photosensitive sheet pulled out from the storage container,
An instant photographic apparatus comprising a control means for executing stop control for stopping the conveyance of the photosensitive sheet based on the detection result of the sheet length detection means. 2. The control means, when the sheet length detection means determines that the length of the photosensitive sheet pulled out from the storage container is shorter than the transportable length, stops the transport of the photosensitive sheet. The instant photographic device according to claim 1, wherein 3. The control means, when the conveyance of the photosensitive sheet is stopped on the basis of the length detected by the sheet length detection means, performs a notification control to notify that effect. The instant photographic device according to 1.