JPH01250937A - Instant photographing device - Google Patents

Abstract

PURPOSE:To prevent the wastage of a negative film in case it gets jammed by providing a control means, which discontinues carrying the film and then cut it with a cutter in case it gets jammed before it is cut. CONSTITUTION:The control means is provided on an instant photographing device, so that it discontinues carrying the negative film 70 and then cuts the film with the cutter 20 in case it gets jammed before it is cut. When the film 70 gets jammed, it is stopped from being carried further, and is cut by activating the cutter 20, thereby easily removing the jamming part only. Thus, it is not necessary for the unexposed negative film 70 to be withdrawn, and its wastage, such as in the case where it is not cut by the cutter 20, is prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a peel-apart type instant photographic apparatus configured to cut a roll-shaped photosensitive member one by one.

[Conventional technology]

An instant photographic device that uses this kind of peel-apart type instant photographic film pulls out a roll of negative film (photosensitive member) to the exposure position, and connects the exposed negative sheet (cut negative film) with the timing from a predetermined position. The positive sheet conveyed by the developer is overlapped with a pod containing developer between them, and the pressure of the developing roller ruptures the sealing part of the pod to spread the developer evenly between the two for development and transfer. It is a mechanism.

[Problem to be solved by the invention]

By the way, in this type of device, since the sensitivity of the negative film is 15O80 to 100, it is exposed to even a small amount of light. For this reason, positive sheets, pods, negative films, etc. become jammed, and when the jammed sheets, etc. are removed, all the negative films taken out from the cartridge are exposed to light and become unusable. Moreover, negative film is expensive because it uses silver salt. Therefore, it is desirable to have a copying sequence that does not damage the negative film as much as possible even in the event of a jam.

The possibilities of jams in each sheet or pod are as follows: In the case of positive sheets: - Non-feeding jam due to feeding error in the paper feed roller, - Jam between the conveyance roller and the developing roller, - Jam on the developing roller, In the case, ■If the pod does not fall even if the tape to which the pod is attached is wrapped.

■If the pod does not fall in the correct position, in the case of negative film, ■Jam before cutting, ■Jam between cutting and development roller, ■Jam at development roller.

Operations unrelated to negative film are ■ and ■.

■、■. Therefore, unless the feeding of the negative film is started until the operations ①, ②, ②, ③ are completed, the possibility of wasting the negative film in the event of a jam is considerably reduced.

The present invention has been made in view of the above technical background, and an object of the present invention is to provide an instant photographic device that can prevent negative film from being wasted in the event of a jam.

[Means to solve the problem]

The above object is achieved by an instant photographic device comprising three different means as described below.

That is, the first means includes an exposure device for a rolled negative film in a light-shielded cartridge, a pod supply device containing a developer, and a cutter, and aligns the positive sheet, the pod, and the exposed negative sheet leading edge, and develops the negative sheet. In a peel-apart instant photographic device in which a pair of rollers spreads the developer to transfer the image, and each image forming unit is separated by a cutter, the negative film is removed if the negative film jams before being cut. The structure includes a control means for stopping the conveyance of the material and cutting it with a cutter.

A second means is to provide an instant photographic device similar to the above, in which a conveyance roller and a negative film detection sensor are provided in the conveyance path on the downstream side of the cutter, and when uncut negative film jams, The apparatus further includes a control means for operating the cuffer when the detection sensor detects a negative film.

Furthermore, a third means is an instant photographic apparatus similar to the above, in which a conveyance roller and a negative film detection sensor are provided in the conveyance path on the downstream side of the cutter, and when uncut negative film jams, When the detection sensor does not detect a negative film, the apparatus is configured to include a control means for prohibiting the operation of the cutter and for reversing the conveyance roller for a preset period of time.

[Effect]

According to the first means, when the negative film is jammed, the conveyance of the negative film is stopped and the cutter is operated to cut the negative film, thereby making it easier to remove only the jammed portion. This eliminates the risk of wasting unexposed negative film by pulling it out, which would be the case if the film is not cut with a cutter.

In addition, according to the second means, the detection sensor will not detect the negative film unless it has been conveyed a preset distance from the cutter installation position, so the negative film is cut to a length that is easy to take out, and is cut to a length that is particularly shorter than necessary. There will be no unforeseen situations where it gets cut and cannot be taken out.

Furthermore, according to the third means, if the jammed negative film has not reached the detection sensor installation position, the cutter is not operated, the conveyance roller is reversed, and the film is returned to the upstream side in the conveyance direction from the cutter installation position. Processing is performed on the cartridge side. This makes it possible to handle jamming while minimizing waste of negative film.

〔Example〕

Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 is a schematic diagram showing the overall configuration of an instant photographic apparatus using a peel-apart type instant photographic film according to a first embodiment.

In FIG. 1, the instant photographic device according to the embodiment irradiates illumination light while scanning the document surface, and places the document at a predetermined position (
an optical system unit 1 for forming an image on an exposure surface), a negative sheet is conveyed to this predetermined position, exposed to light, and further aligned and overlapped with a positive sheet.

It is mainly composed of a conveying unit 2 that spreads the developer between them and transfers and forms an image onto a positive sheet.

The optical system unit 1 consists of a contact glass 3, a first traveling body 4 consisting of a first mirror and a light source, a second traveling body 5 consisting of a second mirror and a third mirror, a lens 6, and a fourth mirror and a fifth mirror. Third traveling body 7 and sixth mirror 1
It is composed of 0 etc. The light source included in the first running light 4 is a fluorescent lamp (preferably a color rendering lamp for better color reproduction), etc., and the document placed face down on the contact glass 3 is scanned parallel to the contact glass 3. Irradiate from above. The second traveling body 5 is scanned in the same direction at half the speed of the first traveling body, keeping the optical path length constant.

The magnification and conjugate length during zooming are adjusted by moving the lens 6 and the third traveling body 7 (dotted chain line in FIG. 1).

The original reflected light is the first. reflected by the second and third mirrors,
Furthermore, the lens 6, the fourth lens. Fifth. Slit exposure is performed at exposure position A via the sixth mirror.

Further, a light-shielding cover 8 that covers the lens and a light-shielding cover 9 that is fixed to the bottom plate of the optical system are provided. The light-shielding cover 8 moves together with the lens 6 while contacting the fixed light-shielding cover 9 via a telescope or the like. These prevent flare light from entering from the periphery of the lens 6 as much as possible.

Next, the transport unit 2 will be explained in detail along with its operation. The conveyance unit 2 is composed of a negative roll film feed section, a fed negative film cutter section, a negative film conveyance/exposure section, a positive sheet conveyance section, a pod supply section, and a development section. As will be described later, a negative film 64 is housed in a roll in a light-shielding container 63 between the positive sheet and the negative film 64.
is conveyed onto the guide plate 24 by the rotation of the pull-out roller pair 18a, 18b and further by the rotation of the intermediate roller 27.

When the leading edge of the conveyed negative film 64 is detected by the sensor 25 or after a certain period of time, the first traveling body 4
The second traveling body 5 is scanned, and exposed at the exposure portion A on the guide plate 24 to form a latent image.

The exposure section A is a flat surface spanning the slit area, and is provided at the same level as or higher than the nip height of the pair of pull-out rollers 18 and the pair of intermediate rollers 27. Further, the circumferential speed of the intermediate roller pair 27 is set to be slightly faster than the circumferential speed of the pull-out roller pair 18, and the rollers of the pull-out roller pair 18 are provided with an overrun mechanism.

As described above, the negative film 64 can be conveyed with some tension on the exposure section A, and the negative film 64 can be conveyed while being brought into close contact with the guide plate 24.
The optical path length to the surface and conveyance speed can be kept constant.

The negative film 64 exposed for a certain length and on which a latent image has been formed is temporarily stopped, and then the rotary blade 20a rotates while contacting the fixed blade 20b to cut the negative film 64 into sheets.

The above-mentioned stop timing is determined by counting the time t after the sensor 25 detects the leading edge of the negative film 64.

Although the scanning speed of the optical system changes due to magnification change, the negative film transport speed is constant, so if the film is stopped and cut after a certain time (1) after the leading edge of the film is detected, a negative sheet 70 of a certain length can be obtained.

For this reason, a latent image cannot be formed on the rear end of the cut negative sheet 70 at least over a distance from the exposure position A to the tip of the fixed blade 20b. However, the exposure position A and the cutters 29a and 20b are arranged so that this distance is smaller than the distance D from the rear end of the positive sheet 71 to the rear end of the image area transferred onto the positive sheet 71 (in FIG. 2), which will be described later. If this is done, it is possible to prevent the negative film 64 from being wasted (cutting it to a length longer than the required length), since this is an area where image formation is unnecessary in any case, and the above-mentioned problem can be solved.

Similarly, a latent image cannot be formed on the leading edge of the cut negative sheet 70 at least beyond the distance from the detection position by the sensor 25 to the exposure position A, but this distance is transferred from the leading edge of the positive sheet 71 to the positive sheet 71 as described later. By arranging the exposure position A and the sensor 25 so that the distance to the leading edge of the image area is smaller than the distance C (in FIG. 2), the negative film 64 can be prevented from being wasted.

Furthermore, in the above method, since the negative film 64 is cut after the exposure is completely completed, it is possible to prevent the conveying speed from changing due to impact caused by cutting during exposure.

The cut negative sheet 70 is transferred to the roller 28 and the guide plate 29.
After the direction is changed by approximately 180 degrees, the roller 26 transports the developing roller 26 until the leading end abuts against the developing roller pair 30 .

Conveyance and exposure of the above negative film 64 and sheet 70,
Cutting is performed inside the machine in a dark place while shielding external light with an exterior.

Unlike the negative sheet 70, the positive sheet 71 is not photosensitive and can be inserted from outside the apparatus. In this embodiment, a plurality of positive sheets 71 are stored in a cassette 35, which is inserted into the main body from the lower right side. The stacked positive sheets 71 are separated and conveyed one by one by a feeding roller 36 and a separating device not shown in the drawings.

The separated positive sheet 71 is conveyed between the re-guide plates 39 and 40 by the insertion roller 38, and after a certain period of time after the leading edge is detected by the sensor 37, that is, the leading edge reaches the developing roller pair 3.
It stops when it hits the 0 nip.

Reference numeral 101 denotes a discharge port sensor, which is configured to detect the presence or absence of a sheet at the discharge port, and if a sheet is present at the discharge port, prohibit the copying operation and display a warning.

FIG. 8 is a diagram showing the vicinity of the developing roller pair 30 of the apparatus of this embodiment. By abutting both the negative sheet 70 and the positive sheet 71 against the nip of the pair of single developing rollers 30, they are aligned. Therefore, a complicated positioning device is not required, and the device can be made inexpensive and compact. The developing roller pair 30 is composed of a pair of pressurized metal straight rollers. With the development roller pair 30 stopped, the leading edge of the positive sheet 71 hits the nip before the negative sheet 70, and the positive sheet 71 stops and waits.

Next, by winding up the tape, which will be described later, only one pod 15 falls from the container. As shown in Figure 8,
Since the guide plate 44 is tilted downward with respect to the developing roller pair 30 and the guide plate 40 is also tilted downward or held horizontally, the fallen pod 15 slides on the guide plate 44 and the developing roller pair 30 The pod falls into the gap between the guide plates 44 and 43, and on the stopped positive sheet 71, the tip of the pod hits the nip of the developing roller pair 30 and stops (arrow F). Thereafter, the negative sheet 70 that has been exposed is conveyed between the guide plates 43 and 44 by the roller 26, passes above the stopped pod 15, and its leading end hits the nip.

The feeding, cutting, and exposure of the negative film 64 are performed when the sensor 37 shown in FIGS. 1 and 8 does not detect the positive sheet 71, or when the sensor 80 shown in FIGS. 1 and 8 detects the passage of the pod 15. When it is not detected, it is controlled to be prohibited. For example, malfunctions such as forgetting to insert the positive sheet 71 or malfunctioning pod supply can be prevented by disabling the print SW from being pressed. Similarly, when the sensor 37 does not detect the positive sheet 71, the pod 1
By controlling to prohibit the supply of the pod 15 and the negative film 64, it is possible to prevent wasteful consumption of the pod 15 and the negative film 64 due to poor conveyance of the positive sheet 71.

After the negative sheet 70, positive sheet 71, and pod 15 are brought into contact with the nip and their tips are aligned, the developing roller pair 3
0 rotates and transports the three together, and at this time the aforementioned pod 1
5 is crushed and the developer is spread between the negative and positive sheets, and development (transferring and fixing the negative latent image to the positive sheet 71) is performed.

The developing roller pair 30 is required to have highly accurate straightness in order to spread the developer uniformly (with a constant thickness).

Both the developed negative and positive sheets 70, 71 are discharged to the discharge tray 46 while being adhered by the developer, and when the positive sheet 71 is peeled off after several tens of seconds, a positive color image is transferred onto the positive sheet 71.

Maintenance (cleaning, etc.) of the developing roller is performed on the output tray 46.
With the developing roller pair 30 removed, the pair of developing rollers 30 configured together with the frame body 52 and the discharge guide 53 is rotated to the left about the shaft 54, thereby exposing the rollers 30 outside the machine.

Next, the film used in the image forming method of this apparatus will be explained. This instant photographic film consists of a pod 15 consisting of a negative film 64, a positive sheet (photographic paper) 71, and a bag containing a developer. The negative film 64 is exposed by the optical system unit 1, then its leading edge is brought together with the positive sheet 71, and the negative film 64 is passed between the pair of developing rollers 30 which are pressed together with the positive sheet 71 and the pod 15. At this time, the sealing portion of the pack is torn, and the developer is evenly spread between the positive sheet 71 and the negative sheet 70. Development is now started, and the negative develops color in several tens of seconds, the coloring agent is transferred to the positive sheet 71, and then when the negative sheet 70 is peeled off from the positive sheet, a positive color image is obtained on the positive sheet 71.

As shown in FIG. 2, a sight rail 11 (for example, a paper tape-like material attached to the printing surface) that can be peeled off to the outside of the image forming surface to prevent the leaked and spread developer from leaking from both ends. A belt is provided. Further, the mask sheet 12 forming the boundaries of the image forming area of the positive sheet 71 may be releasably attached to the four sides of the positive sheet 71.

The sight rail 11 has a constant thickness in the transport direction (approximately 0.1 m), so when the negative sheet 70 and the positive sheet 71, which are aligned between the pressurized rollers, pass, the developing image is spread between both the sight rails 11. The thickness of the agent is kept constant due to the high viscosity of the liquid. A trap 13 is provided at the rear end of the positive sheet 71 to receive and store the developer, and is removable so that excess developer is not squeezed out of the positive sheet 71 and contaminates rollers and the like. Wedges 4 having a thickness of about 2u are provided on both ends of the trap 13. As a result, the spread developer is collected between the wedges 14 on the trap 13.

The length of the pod sealing portion must be narrower than the sight rail 11J) which prevents the developer from flowing out in the width direction. It takes some distance for the developer to spread to both site rails 11 of the positive sheet 71. Since good image formation (transfer) cannot be performed over this distance, a latent image is formed on the negative by shifting the distance from the leading edge of the negative by that length, as shown in FIG. 2 (C). Further, an extra length is provided at the rear end corresponding to the length of the trap 13 of the positive sheet 71 to prevent excess developer from being squeezed out and adhering to the developing roller (D).

Therefore, the length of the negative sheet 70 is equal to the distance from the leading end of the positive sheet 71 to the rear end of the trap 13. From the above, as shown in FIG. 6, the cut negative sheet 70 has a slightly extra length at both the leading edge (C) and trailing edge (D) than the length (L) at which a latent image is actually formed. ing.

Regarding the positive sheet 71, the interval between the pair of developing rollers 30 is maintained at a constant amount (approximately 0.35 degrees) for the image length, and the interval is forcibly increased when the rear ends of both sheets are discharged (
It is also possible to eliminate the sight rail 11 and the wedge 14 by providing a mechanism (approximately 2 cranes).

Next, the supply of the negative fissurem sheet and the pod 15 will be explained. As shown in FIGS. 3 and 4, the container 63 for the negative film 64 is made of light-shielding cardboard, a plastic sheet, or an aluminum foil layered on top of these, and then folded at the edges 21 and formed with resin-molded side end members 22. It is inserted into the groove and assembled. The side end member 22 is provided with a boss portion 23 that rotatably supports the inner diameter of the core of the film shaft. The film guide part 19 is made to protrude from the outside of the main body, and a long-pile hervet 65 is pasted inside to prevent light from entering the negative film 64 inside. The leading end of the guide part can securely insert the leading end of the negative film 64 between the rollers and, when the rollers are closed, regulate the initial pull-out length of the leading end of the negative film 64 sandwiching the negative film 64, as shown in FIG. can. container 63
A label may be attached to the outside of the device so that the type of negative film 64 currently attached can be visually checked from outside the device.

In this apparatus, a plurality of pods 15, their storage containers, and a pod supply mechanism are integrally provided at the bottom of a container 63 for negative film 64. When the type of negative film (for example, color, black and white, OHP, etc.) changes, the developer sealed in the pod must also be changed, but since the negative film 70 and the pod 15 are attached together, It is possible to prevent the film 70 and the pod 15 from being used in different combinations.

As shown in FIGS. 7 and 8, a chamber 81 is provided below the light-shielding container 63 of the negative film 64, and a tape 83 folded into an accordion shape and a plurality of pods 15 are housed inside the chamber 81. Each of the pods 15 is releasably attached to the trough of the accordion-shaped tape 83 across the width t. The tape 83 passes from the opening J of the chamber 81 under the bottom plate 82 and is wound around a reel 84 .

The reel 84 is rotationally driven by a drive (not shown) inside the container or the machine body.

As mentioned above, the tip of the positive sheet 71 is connected to the developing roller pair 3.
After reaching zero, the reel 84 winds up the tape 83 for a certain length. When the tape 83 and the pod 15 are wound up, the movement shown in FIG. 7(a)→(bl→(cl) occurs,
By bending the tape 83 by approximately 906 degrees by the bottom plate 82, the pods 15 are peeled off from the tape 83 one by one.

The separated pod 15 moves in the direction of arrow F shown in FIG. 8 due to gravity.
It falls with a trajectory like this.

The same number of pods I5 are provided as the number of negative sheets 70 to be cut from the roll. Therefore, when the pod 15 is used up, the negative film 64 is used up, and the pod 15 and the negative film 64 are not wasted.

Also, since one pod 15 is consumed per negative sheet, the remaining amount of pod 15 and the remaining amount of negative film 64 (sheets)
are the same. Further, since the tape 83 is wound to a certain length for each copy, the remaining amount of the negative film 64 can be displayed from the display window 86 by marking numbers on the tape 83 at the intervals.

In addition, the tape 83 is painted black (the rest is white) so that when the pod 15 disappears, the end of the tape 83 is detected by the reflective sensor 85 fixed inside the main body, and the sensor 85 If this is detected, the negative film 64 and the pod 15 can be prevented from being fed inadvertently by controlling the printing switch so that it cannot be pressed. Furthermore, if the sensor 85 is set to emit the same signal as when detecting the black painted part even when there is no negative film cartridge, forgetting to insert the negative film cartridge can be prevented.

As described above, the present invention employs a copying sequence that does not damage the negative film 64.

The overall operation for this is as follows.

First, the positive sheet 71 is fed by the roller 36, and the roller 38
The sensor 37 detects the leading end, and the developing roller pair 30 is fed until the leading end hits the developing roller pair 30. When the positive sheet 71 is ready, the roll 84 is driven to drop one pod 15 and set it on the positive sheet 71. Pod 1 with sensor 80
After confirming that the negative film 64 has passed, feeding of the negative film 64 is started.

In the configuration shown in FIG. 8, when the pod 15 is detected by the sensor 80, it is assumed that the pod 15 is set in a fixed position. However, an example of checking the position of the pod 15 is shown in FIGS. 9 and 10.

The example shown in Figure 9 is a white pod with a black mark;
FIG. 2 is a side view showing the detection and transport section of the pod.

A photosensor 200 is provided at a position corresponding to the black mark 15a of the normally set pod 15, and can detect when the pod 15 is shifted sideways or diagonally.

In the example shown in FIG. 10, the upper surface of the pod 15 is made of exposed aluminum foil, and detection is performed by contacting it with an electrode.

FIG. 10 (al is a developed view of the pod 15, FIG. 10(b) is a side view showing the detection transport section of the pod, and FIG.
is the sensing electrode.

If the negative film 64 is jammed during exposure after the positive sheet 71 and the pod 15 are set normally and the negative film 64 is fed out, the conveyance of the film is stopped when the jam is detected. Since the film has not yet been cut at this time, if the film is taken out as it is, there is a risk that the unexposed negative film 64 will be drawn out from the cartridge 63 and wasted.

Then, the jam is detected, the negative film 64 is stopped, the cutter 20a is activated, and the negative film 64 is stopped.
to make it easier to remove the jam film. These controls are performed by a CP built into the control circuit of this device (not shown).
Done by U.

In the case of a jam after the negative film 64 has been exposed and cut, it is sufficient to simply stop the conveyance.

When the negative film 64 is jammed, after removing the jammed film, the positive sheet 71 and the pod 15 are correctly set in front of the developing roller pair 30. Therefore, when copying after recovering from a jam, the operations of transporting the positive and setting the pod 15 are omitted, and the operation is performed by pulling out the negative film 64.

In the case of a jam in the negative film 64, a negative film jam flag is set in the sequence program.

If this flag is checked at the time of copy start and it is standing, pod 15, posisy, and door 1 will not be newly set. It goes without saying that the positive sheet 71 and pod 15 are detected and confirmed at this time.

If the pod 15 is not set in the normal position, the machine will stop as in the case of a jam, so remove the developing roller unit 52, remove the positive sheet 71 and the pod 15, and place the pod 15 on the pod tray 202 ( Figure 11). After the developing roller pair 30 is installed, the pod 15 in the pod tray 202 is checked at the start of the copying operation, and if the pod 15 is found, the pod in the pod tray 202 is removed without taking the pod 15 out of the storage container. let it fall. Therefore, the pod 15 does not need to be wasted.

Therefore, according to this first embodiment, when the negative film 64 jams before cutting the negative film 64, the conveyance of the negative film 64 is stopped and the cutter spring cuts the film 64. When taking out the negative film 64, there is no risk of pulling out unexposed film and wasting it.

Next, a second embodiment will be described.

First, in order to clarify the difference from the first example, the second example
The negative and positive forms used in the instant photographic device according to the embodiment will be explained. In the following description, components that are the same as or can be considered to be the same as those in the first embodiment are given the same reference numerals, and redundant description will be omitted as appropriate.

The negative film 64 in this embodiment is long and wound into a roll with the latent image forming surface facing inside, and is photosensitive, so it is housed in a light-shielding container 63 and shielded from light. Each time an image is formed, the cutters 20a, 2 are pulled out for a certain length, exposed to light and a latent image is formed over the area shown by the dotted chain line in FIG.
It is cut into sheets by 0b.

On the positive sheet side, as shown in FIG. 14, a positive sheet 71 having the required image receiving area on a carrier sheet 91
is removably attached to the outside of the image receiving surface. When this positive sheet 71 is thinly combed for easy handling, or when a transparent positive sheet (0HP type) is used, room light enters from the back side of the sheet during development processing, causing fogging.

To solve this problem, a carrier sheet 91 is attached to the back side as a light shielding member. The pod 15 is attached to the tip of the carrier sheet 91.

The carrier sheet 91 is slightly larger than the positive sheet 71, and has extra lengths K, M, and N on the front, rear, and sides.

The pod opening part for development is the rear end P, so pod 1
The developer does not spread over the length of 5.

Furthermore, after the developer is cleaved, some distance is required for the developer to spread to both sides of the positive sheet 71.

Since good image formation (transfer) cannot be performed over the entire width by this distance, image formation is performed by shifting by that distance (corresponding to K).

The developer is contained in the pod 15 in an amount larger than that required for image formation so that the developer is sufficiently distributed up to the rear end P of the positive sheet. Excess developer is collected at the rear end portion (corresponding to M, M') between the negative sheet 70 and the positive sheet 71, and is prevented from sticking out and adhering to the developing rollers 30a, 30b, etc.

Development will be explained. Developing in this apparatus means uniformly spreading the developer between the two sheets. The developing roller pair 30 is composed of a metal straight roller 30a and a metal stepped roller 30b as shown in FIG. 15, and both are pressed with an appropriate pressure. Negative sheet 7
0 and positive sheet 71 are its side edges (corresponding to N and N')
is partially bitten by the stepped roller 30b/'l and conveyed. Pod 15 has a negative sheet 70 inside the empty part.
and the positive sheet 71 and are conveyed.

Since the developer 16 that has flowed out due to the rupture of the pod 15 is highly viscous, both sheets 70 and 71 are changed (flexed) until they come into close contact with the surfaces of the straight roller 30a and stepped roller 30b, as shown in the shaded area. Expand 70.71. Therefore, the developer thickness (approximately 0.1 fi) between the negative sheet 70 and the negative sheet 71 is kept constant.

The instant photographic device that performs the above-mentioned development is installed in the 12th
As shown in the figure. The present apparatus is composed of an optical system unit 1 and a transport unit 2, as in the first embodiment.

The optical system unit 1 consists of a contact glass 3, a first traveling body 4 consisting of a first mirror and a light source, a second traveling body 5 consisting of a second mirror and a third mirror, a lens 6, and a fourth mirror and a fifth mirror. Third traveling body 7 and sixth mirror 1
0 etc., the configuration is similar to that of the first embodiment, and the same operation is performed.

The conveying unit 2 includes a feeding section for the negative film 64, a cutter section for cutting the fed negative film 64, a negative sheet conveying/exposure section, a positive sheet conveying section, a pod supply section, and a developing section. Note that the configuration and operation of the cutter section and the negative sheet conveyance/exposure section are the same as in the first embodiment, so a description thereof will be omitted.

The positive sheet 71 is transported before the negative film 64 is transported (exposed and cut). Unlike the negative sheet 70, the positive sheet 71 is not photosensitive and can be inserted from outside the apparatus. In the apparatus of this embodiment, the positive sheets 71 are manually inserted one by one toward the left side along the guide plate 34 at the lower right of the main body. This eliminates the need for paper feed, separation devices, paper feed cassettes, etc., making the device compact and inexpensive.

As shown in FIG. 12, the positive sheet 71 is attached to the lower guide plate 3.
4 and both side guides (not shown), and when the tip is detected by the sensor 37, the insertion roller 3
8 rotates.

The rollers of the insertion roller 38 are provided at locations that grip only both ends outside the pod 15 so as not to crush the pod 15 attached to the tip of the carrier sheet 13. The positive sheet 71 is conveyed between the re-guide plates 39 and 40 by the insertion roller 38, and is stopped when the leading end hits the nip between the pair of developing rollers 30. The above-mentioned stop timing is determined by counting the time t after the sensor 47 detects the leading edge of the positive sheet 71. The tip of light-shielding Mylar 66 is pasted over the entire width of the guide plate 39, and is pressed against the guide plate 40 with a light downward force due to the rigidity of Mylar itself. The positive sheet 71 has a Mylar 66 tip and a guide plate 40.
It is transported while being rubbed by Further, the positive conveyance path is bent at at least one place.

By shielding the positive transport path from light as described above, it is possible to prevent the negative sheet 70 from being exposed to external light entering from the transport path.

After the leading edge of the inserted positive sheet 71 hits the developing roller pair 30 and stops, the aforementioned negative film 64 is conveyed, exposed, and cut, and the negative sheet 70 that hits the stopped roller pair 50 is moved to the guide plate 31a. , 31b
After being bent by a certain amount between the rollers 50, the sheet is conveyed between the guide plates 33a and 33b by the rotation of the roller pair 50 (the timing of this rotation is determined by counting the time t after the sensor 51 detects the leading edge of the negative sheet). That is, by abutting against the pair of rollers 50 and bending the negative sheet 70, the conveyance timing of the negative sheet 70 is adjusted, and by bringing the leading end into the nip of the pair of rollers 50, skew correction is performed.

FIG. 16 is a diagram showing the vicinity of the developing roller pair 30 in this embodiment. The developing roller pair 30 is operated before the leading edge of the negative sheet 70 hits the nip of the developing roller pair 30 (by timing using the sensor 42 or 51).
It begins to rotate, and the positive sheet 71 that has been abutted is conveyed first. Thereafter, the leading edge of the negative sheet 70 reaches the nip of the developing roller pair 30 due to the rotation of the roller pair 50, and both are conveyed at the circumferential speed of the developing roller pair 30. As a result of the above, a deviation J shown in FIG. 16 occurs at the leading ends of the positive sheet 70 and the negative sheet 71. This deviation J is controlled to be at least less than K in FIG. 14, and the length of the negative sheet to be cut can be shortened (save) by this deviation amount.

The developing roller pair 30 (30a, 30b) is normally on standby or rotating in the state shown in FIG.

The developing roller 30b is rotatably held by arms 48 at both ends. The arm 48 is rotatably engaged via a pin 55, and a spring 56 is provided at one end of the arm 48 to bring the developing roller 30b into contact with the developing roller 30a under pressure. Further, a cam 4 is provided on the other end side of the arm 48.
5 is provided, but in FIG. 17, the arm 48 and the cam 45 are not in contact with each other. After the developer 16 is spread over the image area between the positive sheet 71 and the negative sheet 70 by the developing roller pair 30, the cam 45 rotates and the first
As shown in FIG. 8, the developing roller 30b is rotated downward by pushing up the arm 48, and the developing roller 30b is rotated downward, thereby separating the developing roller pair 30 from each other. At this time, a gap H is created between the developing roller pair 30. The separation timing is counted when the sensor 37 detects the rear end of the positive sheet 71. As a result of the above, negative sheet 7
0, the interval between the positive sheets 71 is widened, and as shown in FIG.
Surplus developer can be stored between M and M' in 1.

The developing roller 30a is provided with a developing unit side plate (not shown) so that the plate spring 57 is always in pressure contact with both ends of the latent image forming area of the negative sheet 70, as shown in FIGS. 17, 18, and 19. It is supported and installed. When the developing roller pair 30 is pressurized, the leaf spring 5 of the developing roller 30b
There is a step (not shown) in the part facing the leaf spring 5.
7 does not hinder the rotation of the developing roller 30b. The pair of positive and negative sheets 70 and 71 on which the developer 16 has been spread is
Even after the developing roller pair 30 is separated, the leaf spring 57 and the developing roller 3
0a and discharged outside the machine. Thereafter, the cam 45 rotates again, and the developing roller pair 30 returns to the state shown in FIG. 17.

FIG. 20 and FIG. 21 are schematic diagrams showing the area around the cutter section.

An end detection sensor 106 is located near the light-shielding container 63, and a sensor 32 (sensor 2) is located downstream of the cutter 20.
5), intermediate roller 27, guide plate 103
, 104, sensor 25, roller 28: roller 28b, and guide plate 29 are arranged in this order. The guide plate 103X is
As shown in FIG. 20, it has a notch 99 in the center, and the sensor 25 is disposed within the notch 99. intermediate roller 27
can be rotated forward and backward by a motor (not shown). or,
Although not shown, the roller 28 has a fulcrum on the main body side and can rotate in a direction away from the guide plates 103 and 104, and the guide plate 29 can be opened and closed in the same way.

The reason why the cutter and its surroundings are configured as described above is to clear the jam of the negative film 64. That is, if a jam occurs after the negative film 64 is cut before the developing process, the guide plate 29 is opened and closed without any special operation, and processing is performed. negative film 6
When the negative film 64 is jammed before being cut and the sensor 25 detects the negative film 64, the cutter 20 is operated to cut the negative film 64 in the jammed state. In this state, the jammed negative film 64 is disposed of by opening and closing the guide plate 29 (or rotating the roller 28 as the case may be). In this case, the jammed negative film 6
4, since the sensor 25 is located within the notch 99 of the guide plate 103, the negative film 64 is located at a position where the negative film 64 can be removed by inserting a hand.

Further, when the sensor 25 does not detect the negative film 64, the operation of the cutter 20 is prohibited, and the intermediate roller 27 is reversed for a certain period of time to ensure that the negative film 64 escapes from the nip portion of the intermediate roller 27. , processing is performed by pulling out the light-shielding container 63 in the direction of arrow J. If the light-shielding container 63 is pulled out in that state, the negative film 64 may remain caught between the intermediate rollers 27, and in this state, the negative film 64 will be fed out as the light-shielding container 63 is pulled out. be.

Further, paper jams after the development stage are removed through an ejection port (not shown) of the main body.

All of the above processing is carried out by a controller built into the control circuit of this device.
This is done via the PU.

As described above, in this embodiment, jam removal is performed using the guide plate 29.
The process can be performed by releasing only the roller 28 (in some cases, the roller 28), and only a minimum amount of the negative film 64 needs to be exposed. In addition, when processing cannot be performed using the guide plate 29, the intermediate roller 27 is reversed and the light-shielding container 63 is taken out. Therefore, when the light-shielding container 63 is pulled out, the negative film 64 is not fed out by the intermediate roller 27, and the negative sheet is removed. The amount of wasted 64 can also be minimized.

〔Effect of the invention〕

As is clear from the above description, the instant photographic apparatus according to the present invention has the following effects.

That is, according to the invention described in claim (1), when it is detected that the negative film is jammed before cutting the negative film, the conveyance of the negative film is stopped and the negative film is cut with a cutter, so that the jam is eliminated. When unexposed negative film is taken out, unexposed negative film is not pulled out excessively, so there is no risk of wasting negative film.

Further, according to the invention described in claim (2), the negative film is cut to a size that can be easily grasped by hand, so that the jammed negative film can be easily removed by inserting the hand, and the unexposed film can be removed easily. There is no danger of wasting negative film.

Furthermore, according to the invention described in claim (3), if the jammed negative film does not reach a preset size, the negative film is returned and processed on the cartridge side. Since the negative film is not fed out by the negative film, there is no risk of wasting unexposed negative film.

[Brief explanation of the drawing]

1 to 11 are for explaining a first embodiment of the present invention, in which FIG. 1 is a schematic configuration diagram of an instant photographic apparatus according to the embodiment, FIG. 2 is an external view of a positive sheet, and FIG. Figure 3 is an external view of the negative film container, Figure 4 is a partial cross-sectional view of the same, Figure 5 is an external view of the negative film container with the leading edge of the negative film pulled out, and Figure 6 is the formation of a latent image on a cut negative sheet. Diagram showing the range, Figure 7 (a), (bl,
fc) is an operation explanatory diagram showing the situation in which pods are supplied from the pod storage section, Fig. 8 is a side view showing the confluence of the negative sheet and positive sheet, and Figs. 9 and 10 are respectively for checking the position of the pod. FIG. 3 is a diagram showing different examples;
Figure 9+a) is a developed view of the pod, Tbl is a side view showing the pod detection and transport section, Figure 10 Ta) is a developed view of the pod, and (middle of the same figure) is a side view showing the pod detection and transport section. Side view of the same figure (C1 is a wiring diagram of the detection electrode, FIG. 11 is an enlarged view centered on the pod tray part, and FIGS. 12 to 21 are for explaining the second embodiment. Fig. 12 is a schematic diagram of the instant photographic apparatus according to the embodiment, Fig. 13 is a perspective view showing a state where a negative film is developed, Fig. 14 is a perspective view showing a state of a positive sheet, and Fig. 15 is a perspective view showing the state of a positive sheet. A cross-sectional view of main parts showing a state in which the developer is spread;
FIG. 16 is an enlarged view of the vicinity of the developing roller pair, FIG. 17 and FIG. 18 are operation explanatory diagrams showing the approach and separation mechanism of the developing roller pair, respectively, and FIG. 19 is a plan view of essential parts showing the negative sheet and the developing roller pair. FIG. 20 is a side view of the main parts mainly showing the vicinity of the cutter and the sensor mounting part, and FIG. 21 is a side view of the main parts showing the vicinity of the cutter including the light-shielding container and the roller. DESCRIPTION OF SYMBOLS 1... Optical system unit, 2... Conveyance unit, 15... Pod, 18... Pull-out roller pair, 20... Cutter, 20a・
...Rotating blade, 20b...Fixed blade, 24.
...Guide plate, 25, 32, 37.80...
...Sensor, 27...Intermediate roller pair, 30...
...Developing roller pair, 63... Light-shielding container, 6
4... Negative film, 70... Negative sheet, 71... Positive sheet, 81...
Chamber, 83...Tape. Pigeon 9' 104 28b

Claims (3)

[Claims] (1) Equipped with an exposure device for roll-shaped negative film in a light-shielded cartridge, a pod supply device containing developer, and a cutter, the positive sheet, pod, and exposed negative sheet tips are aligned, and the developer is applied to the developing roller pair. In a peel-apart type instant photographic device in which image transfer is performed by spreading the film, and each image forming unit is separated by a cutter, the conveyance of the negative film is stopped in the event that the negative film jams before the negative film is cut. An instant photographic device characterized by being provided with a control means for cutting with a cutter. (2) Equipped with an exposure device for roll-shaped negative film in a light-shielded cartridge, a pod supply device containing developer, and a cutter, the positive sheet, the pod, and the exposed negative sheet tips are aligned, and the developer is applied to the developing roller pair. In a peel-apart type instant photographic device in which image transfer is performed by spreading the negative film, and each image forming unit is separated by a cutter, the negative film is transferred at a preset distance from the cutter installation position in the conveyance path on the downstream side in the conveyance direction. A negative film detection sensor is installed at the position, and
An instant photographic apparatus comprising: a control means for operating the cutter when the detection sensor detects the negative film when uncut negative film jams. (3) Equipped with an exposure device for a roller-shaped negative film in a light-shielded cartridge, a pod supply device containing developer, and a cutter, the positive sheet, the pod, and the exposed negative sheet tips are aligned, and the developing roller In a peel-apart instant photographic device in which image transfer is performed by spreading the film, and each image forming unit is separated by a cutter, a transport roller and a negative film detection sensor are installed in the transport path on the downstream side of the cutter in the transport direction. and control means for prohibiting operation of the cutter and reversing the conveyance roller for a preset time when the detection sensor does not detect the negative film when uncut negative film jams. An instant photographic device characterized by: