JP2728247B2 - Instant photo equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a peel apartment type instant photographing apparatus. (Prior Art) Conventionally, most of the peel-apart type instant photographing devices are of the small camera type. (Purpose) It is an object of the present invention to prevent light from entering through a receiving sheet insertion port in a peel apartment type instant photographic apparatus. (Constitution) The present invention relates to a peel-apart type instant photographic apparatus using a photosensitive member and a receiving member having a pod containing a developer, wherein a position where the photosensitive member and the receiving member are aligned with each other and outside of the instant photographic apparatus. Is opened,
A receiving member conveying path between the receiving member and the receiving member insertion port into which the receiving members are inserted one by one forms a path that is bent at least one turn to prevent stray light from entering the matching position from the insertion port. . Hereinafter, an image forming apparatus to which the present invention is applied will be described based on an embodiment. FIG. 1 shows an overall configuration diagram of an instant photographic apparatus using a peel-apart type instant photographic film according to an embodiment of the present invention. This apparatus irradiates illumination light while scanning a document surface, and forms an optical unit 1 for forming an image at a predetermined exposure position, and transports a negative sheet to a predetermined position to expose the negative sheet.
Further, it is composed of two units, a transport unit 2 that positions and overlaps with the positive sheet, spreads the developer therebetween, and transfers and forms an image on the positive sheet. The optical system unit 1 includes a contact glass 3, a first traveling body 4 including a first mirror and a light source, a second traveling body 5 including a second mirror and a third mirror, a lens 6, a fourth mirror 7, and the like. . As a light source on the first traveling body 4, a fluorescent lamp (preferably for color rendering to improve color reproduction) is used, and an original placed downward on the contact glass 3 is scanned in parallel with the contact glass. Irradiate. The second traveling body 5 is scanned in the same direction at half the speed of the first traveling body, and the optical path length from the document surface to the exposure drum is kept constant. The reflected light from the original is reflected by the first, second, and third mirrors,
Further, the light is slit-exposed on the exposure drum 28 via the lens 6 and the fourth mirror 7. The light shielding cover 8 is provided with a slit 61 having a shape for equalizing the amount of light before the lens in order to give a uniform exposure amount in the width direction to the exposure unit. In addition, a slit 62 with the minimum width required to suppress flare light as much as possible is provided on the bottom plate, and the necessary exposure (illuminance 1 ux × time sec) is given to the negative film by a combination of the speed of transport of the negative film and the amount of fluorescent lamp light. Can be. The operation of the transport unit 2 will be described. The transport unit 2 includes a negative roll film feeding section, a cutter section of the fed negative film, and transport of a sheet-shaped negative film.
It comprises an exposure section, a positive sheet transport section, and a development section. In this apparatus, a negative film having the same width as the positive sheet is stored in a light-shielded film container 63 as a roll, pulled out each time an image is formed, and automatically cut into a predetermined length. The negative film gripped by the pair of pull-out rollers 18a, 18b is conveyed by the rotation of the pair of pull-out rollers 18a, 18b and the intermediate roller 27. Negative film transported
When the leading end of the blade 64 is detected by the sensor 25 or after a certain period of time, the rotary blade 20a rotates downward while contacting the fixed blade 20b, and cuts the negative film 64 into a sheet. The distance between the cutting position and an exposure position A described later is set to be longer than the distance from the front end of the latent image formed on the negative sheet to the rear end of the negative sheet. To prevent After cutting, the negative sheet is transported by the intermediate roller 27,
It is sent to an exposure drum 28 and is exposed at an exposure position A on the drum via an optical system to form a latent image. In the above-described optical system, the end of the image area of the negative sheet has the exposure position A.
Is started in time to reach. Exposure drum
The belt 28 is driven to rotate in synchronism with the scanning speed of the optical system, and a belt 29 is hung at both ends thereof with a constant tension and rotates. The negative sheet is bitten at both ends outside the image area by a belt 29 and a drum 28, rotates at the same speed with the drum 28, and
After the direction is changed by 0 degrees, the sheet is conveyed by the intermediate roller 27 and the roller 26 until the leading end abuts on the developing roller 30. The peripheral speed of the exposure drum 28 is set slightly higher than the peripheral speed of the intermediate roller 27, and the intermediate roller 27 is provided with an overrun mechanism. Therefore, the negative sheet is conveyed on the exposure drum 28 with a slight tension. Further, the curl in the width direction is corrected by being wound around the drum 28, and the curl in the width direction can be brought into close contact with the exposure drum 28, so that the optical path length to the negative sheet surface and the transport speed can be kept constant. Conveying, cutting and exposing the above negative film and sheet, while shielding external light with an exterior, etc.,
Processed in the dark in the cabin. Positive sheet is not photosensitive unlike negative sheet.
It can be inserted from outside the device. In the apparatus of this embodiment, the positive sheets are manually inserted one by one to the left along the guide plate 35 at the lower right of the main body. Therefore, a paper feeding / separating device, a paper feeding cassette, and the like are not required, and the device can be made compact and inexpensive. As shown in FIG. 8, a positive sheet is inserted along the lower guide plate 35 and both side guides 36,
, The insertion roller 38 rotates. The rollers of the insertion roller 38 are provided at positions where only the outer ends of the pod are gripped so as not to crush the pod attached to the front end of the positive sheet. The positive sheet is conveyed between the guide plates 39 and 40 by the insertion roller 38, and stops when the leading end hits the nip of the developing roller pair 30. On the guide plate 39, a light-shielding mylar 66 with a telemp 67 or the like affixed to the tip is stuck over the entire width, and is pressed against the guide plate 40 with a light downward force due to the rigidity of the mylar itself. The positive sheet is conveyed while being rubbed between the telem 67 at the tip of the mylar 66 and the guide 40. In addition, the positive transport path is bent at least one place. By shielding the positive transport path as described above, it is possible to prevent the negative sheet from being exposed to external light entering the transport path. FIG. 9 is a view showing the vicinity of the developing roller pair 30 of the apparatus of this embodiment. Both the negative sheet and the positive sheet are brought into contact with the nip of the single developing roller pair 30 to perform the positioning of the two. Therefore, a complicated positioning device is not required, and the device can be made inexpensive and compact. The developing roller pair 30 is constituted by a pair of pressurized metal straight rollers.
In the state where the developing roller pair 30 is stopped, the front end of the pod 10 stuck on the positive sheet abuts on the nip before the negative sheet 70, and the positive sheet 71 stops and waits.
Thereafter, the negative sheet 70 that has been exposed as described above is conveyed between the guide plates 43 and 44 by the rollers 26, passes above the positive sheet 71, and abuts on the nip. The front end of the guide plate 43 is provided at an upper portion between the front end and the rear end of the pod, and prevents the negative sheet from entering below the pod. The feeding, cutting and exposure of the negative film are controlled so as to be prohibited when the sensor 37 shown in FIG. 8 does not detect the positive sheet. For example, erroneous operations such as forgetting to insert a positive sheet can be prevented by means such as making the print SW inoperable. After the two are abutted against the nip and their tips are aligned, the developing roller pair 30 rotates and transports the two together. At this time, the pod collapses and the developer spreads between the two, and the developing (negative latent image) Is transferred to a positive sheet and fixed). The developing roller pair 30 is required to have a high degree of straightness in order to spread the developer uniformly (at a constant thickness). Therefore, the developing roller pair
An elastic blade 45 always contacts the discharge portion 30 at a constant pressure, and scrapes off the developer adhered to the developing roller pair 30 to prevent the developer from sticking and impairing the straightness. When the developing roller drive source is used in common with the exposure unit drive source, the load fluctuation at the start of the developing roller and the impact when the positive sheet and the negative sheet pass through the developing roller pair 30 affect the transport speed of the exposure unit. Therefore, similarly to the above-described cutter position, the distance from the exposure position A to the developing roller pair nip is set to be longer than the distance from the leading end of the negative sheet to the trailing end of a latent image formed on the negative sheet, thereby preventing the above-mentioned adverse effect. be able to. The developed negative and positive sheets are discharged to the discharge tray 46 while being in close contact with the developer, and after several tens of seconds, the positive sheet is peeled off, and a positive color image is transferred onto the positive sheet. If a negative or positive sheet conveyance failure occurs inside the machine, the operator sets the cover 48 (which is shaded when closed),
The guide plates 49 and 50 are rotated (opened) to the positions indicated by the two-dot chain lines in FIG. 1, respectively, and the jammed sheet can be removed outside the machine. The maintenance (cleaning, etc.) of the developing roller is performed by rotating the developing roller pair 30 formed with the frame 52 and the discharge guide plate 53 to the left around the shaft 54 in a state where the tray 46 is removed. It is performed in a state where it appears outside. Next, a film used in the image forming system of the present apparatus will be described. The instant photographic film used in this apparatus is composed of a negative film and a positive sheet (photographic paper). The negative film is exposed by the optical system, and then passes between the developing roller pair, which is brought into contact with the positive sheet and is pressed together with the positive sheet. As shown in FIG. 2, a pod 10 composed of a pack in which developer is sealed is adhered to the front end of the positive sheet in the feed direction, and when passing through the roller pair 30, the sealing portion E of the pack is closed. Cleavage spreads the developer evenly between the positive sheet and the negative film. Thus, development is started, a negative color develops in several tens of seconds, the color former is transferred to the positive paper, and then, when the negative film is peeled off from the positive sheet, a positive color image is obtained on the positive sheet. In addition to the pod 10 described above, in addition to the pod 10 described above, a side rail 11 that can be peeled off from the image forming surface so that the developer that has flowed out and spread does not leak from both ends, in this embodiment, a paper tape-like band is attached to the printing screen Are provided. Further, the mask sheet 12 forming the image forming area boundary of the positive sheet may be removably attached to four sides of the positive sheet. The side rail 11 has a constant thickness of about 0.1 mm in the transport direction, so that when a negative film or a positive sheet aligned between pressurized rollers passes, the thickness of the developer spread between the two side rails. Is kept constant due to the high viscosity of the liquid. At the rear end of the positive sheet, there is provided a trap 13 for storing a developer which can be separated so that excess developer is squeezed out of the sheet and does not stain the rollers and the like. Wedges 14 having a thickness of about 2 mm are provided on both ends of the trap. As a result, the spread developer accumulates between the wedges 14 on the trap. The length of the pod seal must be smaller than the width between the edge controllers and the side rails to prevent the developer from flowing out in the width direction. It takes some distance for the developer to extend to both side rails of the positive sheet. Since good image formation (transfer) cannot be performed over the entire width by this distance, a latent image is formed on the negative by shifting the negative tip by the length. Further, a margin is provided at the rear end by the trap length of the positive sheet to prevent the excess developer from being squeezed out and adhered to the developing roller at the rear end. Therefore, the length of the negative sheet is required by the distance from the front end of the pod 10 to the rear end of the trap 13. From the above, the cut negative sheet is, as shown in FIG.
The leading end (C) and the trailing end (D) are slightly longer than the length (L) at which the latent image is actually formed. For the positive sheet, the interval between the developing roller pair is maintained at a fixed amount of the image length section (about 0.1 mm), and when the trailing edge of the sheet is discharged, the interval is forcibly increased (about 2 mm).
By providing a mechanism, the side rail 11, the trap 13, and the wedge 14 can be omitted. Next, the supply of the negative film sheet will be described.
As shown in FIGS. 3 and 4, a negative film container is formed by bending a light-shielding cardboard, a plastic sheet, or a sheet 21 obtained by laminating an aluminum foil on the cardboard and a plastic sheet. Inserted and assembled. The side end member 22 is provided with a boss 23 that rotatably supports the inner diameter of the core of the film shaft. Film guide
19 is made to protrude out of the main body, and a velvet 65 with long hairs is stuck on the inside to prevent light rays from entering the film inside. When the leading end of the guiding portion is securely inserted between the rollers and the rollers are closed, the initial drawing length of the leading end of the film sandwiching the film can be regulated as shown in FIG. A label may be attached to the outside of the container so that the type of the film currently mounted can be visually checked from outside the apparatus. A method of putting a negative film in a light-shielding box having a film outlet, pulling out the leading end of the film between draw-out rollers, feeding the film between the rollers by hand, and then closing the device cover is generally used in plate making machines and the like. In the apparatus according to the present embodiment, automatic loading is performed by simply inserting the film container 63 into the apparatus without unnecessarily pulling out the film at this time and wasting it (automatically feeding the leading end of the film between the draw-out rollers). Can be. As shown in FIG. 5, when the cover 16 of the container accommodating section, in which the window 24 can be provided, is opened, the pin 1 which pushes up the pressure lever of the pull-out rollers 18a, 18b in accordance with the rotation angle of the cover.
Since the roller 7 rotates and the pressure roller 18a can be separated from the drive roller 18b, the film container 63 can be attached and detached.
If the leading end of the film is at least pulled out to a position coinciding with the leading end of the film guiding portion 19 of the container, the film can be reliably positioned between the draw-out rollers 18a and 18b. When the container is taken out to change the film type in the middle, the film is pulled out to the position of the rotary knife consisting of the rotary blade 20a and the fixed blade 20b, so the cutout part in the film guide part is exposed and cannot be used It is necessary to keep the distance to the rotary knife as short as possible. If the length of this exposure is less than the distance from the positive paper pod to the tip mask, even if it is used again,
The exposed portion does not enter the image, and the film is not wasted. In this embodiment, the positive sheet is manually fed, but it is also possible to automatically supply the sheet from a cassette or the like. In this embodiment, a peel-apart material is used in which the photosensitive film is negative and the receiving sheet is positive. However, the present invention is not limited to this. (Effects) According to the present invention, a simple configuration in which only a bent path is formed in the receiving member transport path between the position where the photosensitive member and the receiving member are aligned and the receiving member insertion opening opened outside the apparatus,
It is possible to prevent stray light from entering from an insertion port for inserting the receiving member from the outside of the apparatus into the inside of the apparatus.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an overall configuration diagram of a peel-apart type instant photographic apparatus according to an embodiment of the present invention, FIG. 2 is a perspective view of a positive sheet film, and FIG. 3 is a perspective view of a container of a negative film. Figure,
FIG. 4 is a cross-sectional view of a negative film container, FIG. 5 is a configuration diagram of a negative film storage section, FIG. 6 is an explanatory view of drawing out the negative film, FIG. 7 is a perspective view of a cut negative sheet, FIG. FIG. 9 is an explanatory diagram of a feeding portion of a positive sheet, and FIG. DESCRIPTION OF SYMBOLS 1 ... Optical system unit, 2 ... Transport unit, 3 ... Contact glass, 4 ... First traveling body, 5 ... Second traveling body, 6 ... Lens, 7 ... Fourth mirror, 8 ... Light-shielding cover, 10 Pod, 11 Side rail, 12 Mask sheet, 13 Trap, 14 Wedge, 16 Container cover, 17 Pin, 18a Pressure roller , 18b
…… Drive roller, 19 …… Film guiding part, 20a …… Rotating blade, 20b …… Fixed blade, 21 …… Light shield, 22 …… End member, 23
... Boss part, 24 ... Window, 25 ... Sensor, 27 ... Intermediate roller, 28 ... Exposure drum, 29 ... Belt, 30 ... Developing roller pair, 31, 32, 33, 34, 35 ... Guide plate, 36 ... Side guide, 37 ... Sensor, 38 ... Insertion roller, 39, 40, 4
1, 42, 43, 44 …… Guide, 45 …… Elastic blade, 46
…… Eject tray, 48… Cover, 49… Guide plate, 50…
… Guide plate, 52… Frame body, 53 …… Discharge guide plate, 54 ……
Shaft, 61, 62 …… Slit, 63 …… Film container, 64 ……
Negative film, 65 ... Velvet, 66 ... Myra, 67 ...
... Telemp, 70 ... Negative sheet, 71 ... Positive sheet.

   ────────────────────────────────────────────────── ─── Continuation of front page    (56) References JP-A-61-147241 (JP, A)                 JP-A-61-172129 (JP, A)                 Shokai Sho 59-178645 (JP, U)                 JP-B-36-18921 (JP, B1)                 Jiko 39-31136 (JP, Y1)

Claims (1)

(57) [Claims] In a peel-apart type instant photographic apparatus using a photosensitive member and a receiving member having a pod containing a developer, an opening is provided outside a position where the photosensitive member and the receiving member are aligned with each other and the receiving member is opened. Form a path bent at least one turn in the receiving member transport path between the receiving member insertion port to be inserted one by one,
An instant photographic device, wherein stray light is prevented from entering the insertion position from the insertion opening. 2. 2. The instant photographic device according to claim 1, wherein a light-shielding member having a long hair is attached to at least one surface of the bent path.