JPS6326657A - Copying device - Google Patents

Abstract

PURPOSE:To make the device small in size, to simplify its handling, and to prevent generation of a shift of a transfer position of an image, and an out-of- focus image, by attaching a developer pod to an image receiving sheet, and also, joining the tips of a photosensitive sheet and the image receiving sheet. CONSTITUTION:A photosensitive member 24 of a roller form is cut to a sheet 24a, and thereafter, it is brought to slit exposure by an optical system unit, and subsequently, tips of a photosensitive sheet 24a and an image receiving sheet 38 are superposed, and the tip parts of both the sheets are joined through an adhesive layer 48 which has been formed on the image receiving sheet 38. After this joining, when both the sheets are allowed to pass through between expansion rollers 43 in a state that they have been superposed, a developer pod 49 which has been attached to the tip side of the image receiving sheet 38 is cloven, a developer which has been enclosed in the inside is extruded, and it is developed uniformly between both the sheets. After a diffusion transfer has been executed between both the sheets, the photosensitive sheet 24a is peeled off from the image receiving sheet 38, and washed with water and dried, and discharged to a tray.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a copying apparatus for photocopying a document using instant film.

[Conventional technology]

2. Description of the Related Art Copying devices that utilize so-called electrophotography, in which an electrostatic latent image is formed on a photosensitive drum, developed with toner, and then transferred onto plain paper, are widely used. However, since this electrophotographic method is inferior in gradation expression ability, copying apparatuses using instant photography have been proposed. For example, Japanese Patent Application Laid-Open No. 59-204042 discloses that a roll-shaped photosensitive member and a sheet-shaped image receiving member are used, the photosensitive member is cut into sheets, and then the sheets are exposed to slits to form an image of an original. is recorded, then the photosensitive sheet and the image-receiving sheet are stacked, and then developed (they are developed in a negative state, and both sheets are taken out from the developing tank and left in close contact for a certain period of time, and then the image-receiving sheet is removed from the image-receiving sheet. A copying apparatus is described in which a photosensitive sheet is peeled off, the image-receiving sheet is washed with water, dried, and then discharged onto a tray.

[Problem that the invention seeks to solve]

In the conventional copying apparatus mentioned above, the image receiving sheet is simply placed on top of the photosensitive sheet, so when both sheets are transported by rollers, misalignment may occur, causing the latent image on the photosensitive sheet to be transferred to the receiving sheet. There was a drawback that it could not be transferred correctly onto a sheet. Further, since a developing tank filled with a developer is required, there are problems in that the apparatus becomes large and the management of the developer is troublesome. That is,
The developing ability of the developing solution decreases due to fatigue from use and oxidation due to oxygen in the air, so it is necessary to periodically replace or replenish the developing solution.

[Means for solving problems]

In order to solve the above-mentioned problems, the present invention provides a magazine that stores a roll-shaped photosensitive material, a cuckoo that cuts the photosensitive material pulled out from the magazine into sheets, and a cuckoo that places the cut photosensitive sheet at an exposure position. A means for transporting a photosensitive sheet, an exposure means for recording an image of an original by applying Vhi light to the photosensitive sheet, a cassette containing an image receiving sheet with a developer pond attached to its tip, and an exposed photosensitive sheet and an image receiving sheet stacked on top of each other. a means for joining the ends of the image-receiving sheet and the photosensitive sheet by heating an adhesive layer applied to the leading edge of the image-receiving sheet; and a means for applying pressure to the overlapping photosensitive sheet and image-receiving sheet to split the developer pod. It is provided with a spreading roller that spreads the flowing developer between both sheets, and means for peeling off the photosensitive sheet and the image receiving sheet after the development process.

In the present invention, an image-receiving sheet in the form of a sheet having a developer pouch attached to the leading end thereof and a photosensitive member in the form of a roll are used. The photosensitive member is cut into sheets, which are subjected to slit exposure, and then the leading ends of the photosensitive sheet and the image-receiving sheet are overlapped, and the leading ends of both sheets are joined via an adhesive layer formed on the image-receiving sheet. After this bonding, the developer pond is split open by passing the stacked sheets between developing rollers, pushing out the developer sealed inside and spreading it uniformly between the sheets. After diffusion transfer is performed between both sheets, the photosensitive sheet is peeled off from the image receiving sheet and discharged onto a tray.

Hereinafter, one embodiment of the present invention will be described in detail with reference to the drawings.

〔Example〕

A transparent document table 11 is attached to the upper part of the main body 10, and a document 12 is placed on this. An optical system unit 13 is provided below the document table 11 so as to be movable in the direction of the arrow. The optical system unit 13 includes an illumination light source 14, mirrors 15 to 18, a copying lens 19, and a housing 20 housing these. Although not shown in the drawing, three lamps are actually provided, and a red filter, a green filter, and a blue filter are placed in front of each lamp. Even if the same photosensitive member is used, the characteristic curve y1 will vary somewhat depending on the manufacturing loft, so the quality of the illumination light is adjusted depending on the emulsion number. This can be done by adjusting the voltage of each of the three lamps to vary the luminance of each lamp.

The copying lens 19 moves along the optical axis and can perform enlarged copying, 9 equal-size copying, and reduced copying. Mirrors 16 and 17 are attached to the moving member 21 in order to adjust the object point distance when the copying lens 19 is moved.
It moves according to the movement position of the copying lens 19. Incidentally, the mirrors 15 to 18 and the copying lens 19 can be omitted, and instead of these, a Selfoc lens can be arranged vertically to perform the same-size copying.

The photosensitive member 24 in the form of a roll is housed in a magazine 25 that is replaceably provided to the main body 10 and is pulled out by a pair of pull-out rollers 26 . This photosensitive member 24
When the photosensitive sheet 24a is pulled out by a certain length, the cutter 23 is activated to cut the photosensitive sheet 24a, and the photosensitive sheet 24a is conveyed toward the exposure table 27.

When this photosensitive sheet 24a is placed on the exposure table 27 and its leading edge is detected by the sensor 28, the rotation of the pair of feed rollers 29 and 30 is stopped. The exposure table 27 is connected to a vacuum FA (not shown), and sucks and holds the photosensitive sheet 24a during slit exposure.

The exposed photosensitive sheet 24a is pressed against the roller 32 so that its advancing direction is reversed, and the leading edge of the exposed photosensitive sheet 24a is pressed against the roller 32 and the sheet detecting plate 3
It is transported until it reaches 3. Three small rollers 34 are arranged around this roller 32, and when the photosensitive sheet 24a reaches the sheet detection plate 33, the rotation thereof together with the roller 32 is temporarily stopped and then rotated again.

A plurality of image receiving sheets 38 are stored in an overlapping state in the cassette 37, and this cassette 37
is replaceably attached to the The image-receiving sheet 38 is conveyed so that its leading end is inserted under the photosensitive sheet 24a,
Then, when the leading edge hits the sheet detection plate 33, the conveyance is stopped. In order to convey the image-receiving sheet 38, a feed roller 40 inserted into the cassette 37 and a pair of feed rollers 41 are provided.

As shown in FIG. 2, in the image receiving sheet 38, an image receiving member 45 is bonded to the lower surface of the mask material 44 so as to close the opening 44a. On both sides of the opening 44a of this mask material 44,
A pair of rail members 46 for keeping the developed thickness of the developer constant
are joined, and the rear end (skirt part) of the mask material 44
A spacer 47 that forms a space for storing surplus developer is fixed to. An adhesive layer 48 having heat-sealability is applied to the tip of the mask material 44, and a developer pod 49 containing a developer is attached between the adhesive layer 48 and the opening 44a. There is.

The leading ends of the photosensitive sheet 24a and the image receiving sheet 38 are aligned by the sheet detection plate 33, and in this state, the heat sealer 42 descends and presses the leading ends of both sheets, thereby sealing the adhesive layer 48.
Both sheets are joined through. After this joining, the sheet detection plate 33 is retracted, and the roller 32. The feed roller 41 rotates again, and both sheets 243 and 38 are gripped by the pair of spreading rollers 43.

When the two sheets 24a and 38 are transferred under pressure by the developing roller 43, the developer pod 49 is pressurized and torn at the initial stage. The developer squeezed out from the developer pod 49 is spread to a uniform thickness between both sheets by the pair of rail members 46. This developer is quite viscous, so it keeps both sheets together.

The two sheets 24a and 38 on which the developer has been spread are stored in the stocker 52. This stocker 52 is for keeping the two sheets together until the diffusion transfer is completed. Further, since the progress speed of diffusion transfer differs depending on the temperature, it is preferable to maintain the temperature at a predetermined level using a heater attached to the stocker 52. A long hole 52a is formed at the bottom of this stocker 52. When the push plate 53 moves forward, it enters the long hole 52a, and when it retreats, it enters the long hole 52a.
There will be a karanuki. When the pushing plate 53 moves as shown by the dotted line, it pushes the rear ends of the two sheet pairs 24a and 38 located at the bottom of the stocker 52 and discharges them from the stocker 52.

The sheet pair pushed out from the stocker 52 is sent to a suction table 55 by a feed roller 54. This suction table 55
is connected to a vacuum a (not shown), and the image receiving member 4
Move in the direction of the arrow while suctioning and holding 5. Further, a suction drum 56 is arranged above the suction table 55, and suctions the tip of the photosensitive sheet 24a. Further, a drum 57 is arranged opposite to the satanyong drum 56, and a plurality of narrow belts 58 are wound around these drums 56, 57 at appropriate intervals. Since the suction table 55 and the suction drum 56 rotate synchronously at the same speed, only the image receiving member 45 remains on the suction table 55. That is, since the suction drum 56 rotates while adsorbing the photosensitive sheet 24a, the photosensitive sheet 24a
is peeled off and wound onto the suction drum 56. At this time, since the leading end of the photosensitive sheet 24a is joined to the mask material 44, the mask material 44 is also peeled off together with the photosensitive sheet 24a. On the other hand, since the image receiving member 45 is suctioned by the suction table 55, only the image receiving member 45 remains.

Photosensitive sheet 24 adsorbed on the suction drum 56
Since the mask material 44 is placed on the belt 58, it leaves the suction drum 56 and heads toward the drum 57. Since a guide 59 is disposed around the outer periphery of the drum 57, the photosensitive sheet 24a and the like are guided by the guide 59 and enter the inverted waste box 60. In this case, since the suction table 55 has moved to the position shown by the solid line, the photosensitive sheet 242 and the like will not hit the suction table 55.

The image receiving member 45 that has moved to the solid line position together with the suction table 55 is moved to the washing tank 64 by the roller 62 and the feed roller pair 63.
inserted within. Inside the washing tank 64, a plurality of roller pairs 6 are provided.
5 and a guide 66 are arranged, and a rinsing liquid 6
7 is stored.

The image receiving member 45 is washed with water while being conveyed in the washing tank 64 while being piled up.

The image receiving member 45 discharged from the washing tank 64 is dried in a drying chamber 68 and then discharged onto a tray 69. A blower 70 and a heater 71 are provided in the drying chamber 68 to blow hot air onto the image receiving member 45 .

Each of the rollers is connected to a corresponding motor, and its rotation is controlled by a sequence control circuit such as a microcomputer.

Next, the operation of the above embodiment will be briefly explained.

After placing the original 12 on the original platen 11, a copy magnification designation switch (not shown) is operated to designate the copy magnification.

When the copying magnification is specified, the copying lens 19 and the moving member 2
1 moves to change the object point distance and image point distance. Next, when a start switch (not shown) is operated, the photosensitive member 24 in the magazine 25 is pulled out, and the cutter 23 is pulled out.
After being cut into sheets, they are placed on the exposure table 27. This exposure table 27 has a set 2 of photosensitive sheets 24a.
k, suction and hold this.

After the photosensitive sheet 24a is exposed, the illumination light source 14 emits light and illuminates the original 12 in a line. In this state, the optical system unit 13 moves at a constant speed in the arrow direction, so
The photosensitive sheet 24a is slit exposed. Note that the optical system unit 13 quickly returns to the position shown by the solid line after the slit exposure.

The slit-exposed photosensitive sheet 24a is conveyed to the overlapping position, and then the image receiving sheet 38 is placed on the photosensitive sheet 24a.
It is transported under a. After this, the seek 42 descends,
The leading ends of the photosensitive sheet 1-243 and the image receiving sheet 38 are joined. These two joined sheets are left in the stocker 52 for a certain period of time or more, and diffusion transfer is performed during that time. The two sheets pushed out from the stopper 524° are transferred to the photosensitive sheet 2 by a suction table 55 and a suction drum 56.
4a and the mask material 44 are all peeled off from the image receiving member 45 and discarded in the waste box 60.

The image receiving sheet 45 remaining on the suction table 55 is washed with water and dried, and then discharged onto the tray 69. The image of the original 12 is formed on this image receiving sheet 45 as a positive image.

〔Effect of the invention〕

As described in detail above, in the present invention, since the developer pod is attached to the image receiving sheet, there is no need for a developing tank unlike the conventional copying apparatus. As a result, the device becomes smaller, and since there is no need to manage the developer, handling becomes extremely simple.

Further, since the photosensitive sheet and the image receiving sheet are joined at their leading ends, there is no relative movement between the two sheets during conveyance. Therefore, this relative movement does not cause a shift in the transfer position of the image or blur the image.

[Brief explanation of the drawing]

FIG. 1 is a schematic diagram showing an embodiment of the present invention. FIG. 2 is a perspective view showing a bonded state of a photosensitive sheet and an image receiving sheet. 12... Original 13... Optical system unit 23... Cutter 24... Photosensitive member 24a... Photosensitive sheet 38... Image receiving sheet 44... Mask material 45... Image receiving member 55... Suction table 56...Suction drum 64...Washing tank 68...Drying room.

Claims (2)

[Claims] (1) A magazine that stores a roll of photosensitive material, a cutter that cuts the photosensitive material pulled out from the magazine into sheets, a means for transporting the cut photosensitive sheet to an exposure position, and a means for slit exposing the photosensitive sheet. an exposure means for recording an image of an original document; a cassette containing an image-receiving sheet with a developer pod attached to its tip; a means for overlapping the exposed photosensitive sheet and the image-receiving sheet; A means of heating the adhesive layer to join the ends of the image-receiving sheet and the photosensitive sheet, and applying pressure to the overlapping photosensitive sheet and image-receiving sheet to tear the developer pod and spread the flowing developer between the two sheets. A copying apparatus comprising a developing roller and means for peeling off a photosensitive sheet and an image receiving sheet after the development process. (2) A stocker is disposed between the superimposing means and the peeling means for leaving the photosensitive sheet and the image receiving sheet in a superimposed state. Copying equipment.