JPH01279248A - Stripping-off device - Google Patents

Abstract

PURPOSE:To certainly strip off a photosensitive material and image receiving material carried without wrinkles by causing the 2nd carrying rollers to carry the materials faster than the 1st carrying rollers. CONSTITUTION:This stripping-off device is constituted of a pair of 1st carrying rollers 56j, a stripping-off pawl 110 which is provided on the downstream side of the rollers 56j and pushes the photosensitive material A or image receiving material C carried through the rollers 56j toward one of the rollers 56j, and two pairs of 2nd carrying rollers 56r and 56s which are provided on the downstream side of the pawl 110 and respectively carry the materials A and C in different directions. The 2nd carrying rollers 56r and 56s are driven so that they can carry the materials A and C faster than the 1st carrying rollers 56j do. Therefore, the leading edges of the materials A and C are carried faster than the tailing edges of the materials after stripping off. Accordingly, the photosensitive material A is certainly carried and stripped off with no wrinkle which tends to be produced due to the load of the stripping-off pawl 110.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a peeling device for overlapping an imagewise exposed photosensitive material and an image-receiving material and peeling off the two materials after image transfer has been performed. .

[Conventional technology]

As a recording material that requires a transfer process to obtain an image, for example, Japanese Patent Laid-Open No. 57-17 filed by the present applicant
There is a type disclosed in Japanese Patent No. 9836 in which a polymerizable compound is cured by exposure to light and then pressure is applied to obtain a visible image.

This material has a synthetic polymer resin wall capsule containing a vinyl compound, a photopolymerization initiator, and a colorant precursor supported on a support.

In addition, after containing silver halide and exposing it to light, heat development is performed to develop the silver halide, the polymerizable compound is simultaneously cured in correspondence with this development, and then pressure is applied to obtain a visible image. An example of this type is the material disclosed in Japanese Patent Application Laid-Open No. 61-275742 filed by the present applicant. The material disclosed in JP-A No. 61-275742 is a photosensitive and pressure-sensitive thermal developable material that is thermally developed and then transferred to an image-receiving material having an image-receiving layer to form an image on the image-receiving material. A material, wherein at least a photosensitive silver halide, a reducing agent, a polymerizable compound, and a color image-forming substance are coated on a support, and at least the polymerizable compound and the color image-forming substance are contained in the same microcapsule. It is enclosed.

An apparatus for recording images using this photosensitive pressure-sensitive thermal development material is disclosed in Japanese Patent Application Laid-Open No. 61-278849.

This image recording device first performs forced exposure to form a latent image, and then polymerizes the polymerizable compound in the area where the latent image exists by heating or using light energy during the formation of the latent image to generate a micro-molecular compound. Harden the capsule. Next, it is stacked with an image-receiving material having an image-receiving layer to which the color image-forming substance can be transferred, and pressurized to rupture at least a portion of the microcapsules in areas where no latent image exists, thereby transferring the color image-forming substance to the image-receiving material. An image is obtained on an image-receiving material.

In the above image recording apparatus, an image is formed on the image-receiving material by overlapping the heat-developed photosensitive material and the image-receiving material, sandwiching them between a pair of pressure rollers, and applying pressure at a high pressure of, for example, 500 kg/ctl. Obtainable.

[Problem to be solved by the invention]

The photosensitive material and image-receiving material sandwiched between the pressure rollers are pressurized with high pressure, so in order to ensure that the photosensitive material and image-receiving material are separated after the pressure is applied, for example, the photosensitive material is placed on top of the image-receiving material in advance of the image-receiving material. Then, while the photosensitive material and image-receiving material are conveyed by a conveyance roller, only the photosensitive material is flicked by a peeling claw downstream of the conveyance roller to peel off the leading edge, and the photosensitive material and image-receiving material are conveyed in different directions to achieve peeling. Is going.

However, since the rotational speed of the conveyance roller that conveys the pressure-transferred photosensitive material and image-receiving material is the same before and after peeling,
During peeling, the photosensitive material receives a load from the peeling claw, and this load is transmitted to the roller, which slows down the rotational speed of the roller, causing wrinkles in the photosensitive material before peeling, and furthermore, causing peeling defects and jams.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide a peeling device that can reliably separate a photosensitive material and an image-receiving material after image transfer.

[Means and Actions for Solving the Problems] The above object of the present invention is to provide a peeling device for overlapping an imagewise exposed photosensitive material and an image receiving material and peeling off the two materials after image transfer has been performed. a pair of first conveyance rollers, a peeling pawl provided downstream of the conveyance rollers for biasing the previously conveyed photosensitive material or image-receiving material to one of the conveyance rollers, and a downstream side of the peeling pawl. and two pairs of second conveyance rollers that convey the photosensitive material ring and the image-receiving material in different directions, respectively, and the second conveyance roller is driven to convey the photosensitive material and the image-receiving material faster than the first conveyance roller. This is achieved by a peeling device characterized by:

That is, because the first conveyance roller is driven faster than the second conveyance roller, the photosensitive material and image-receiving material are conveyed while slipping on the first conveyance roller, causing wrinkles in the photosensitive material and image-receiving material before being peeled off. The material is transported and peeled off reliably.

The second conveyance roller is driven to obtain a circumferential speed several percent faster than the circumferential speed of the first conveyance roller, for example, due to a difference in gear ratio or roller diameter.

In the present invention, the photosensitive material may be of any type as long as it is of a type in which a visible image is obtained by transferring an image exposed on the photosensitive material to a transfer material (image receiving material). .

For example, there are so-called photothermographic materials in which an image obtained by thermal development is transferred to an image-receiving material by heating. This photosensitive material is one in which a mobile dye is released imagewise by heating, and the mobile dye is transferred to an image receiving material (dye fixing material) having a mordant using a solvent such as water; Transfer to the image-receiving material is performed using a high-boiling organic solvent, transfer is performed to the image-receiving material using a hydrophilic thermal solvent built into the image-receiving material, or the mobile dye is heat-diffusible or sublimable and the support is There are known methods that transfer to dye-receiving materials such as bodies, etc., and specifically, U.S. Pat. No. 4,463.079, U.S. Pat.
Same No. 4,478,927, Same No. 4,507,380, Same No. 4,500.626, Same No. 4,483.914
No., JP-A-58-149046, JP-A No. 58-14904
No. 7, No. 59-152440, No. 59-154445
No. 59-165054, No. 59-180548, No. 59-168439, No. 59-174832,
It is disclosed in No. 59-174833, No. 59-174834, No. 59-174835, etc.

Another example is a so-called photosensitive pressure-sensitive material in which a visible image is obtained by transferring an image generated by imagewise exposure to an image-receiving material having an image-receiving layer by pressure. Examples of this photosensitive and pressure sensitive material include, for example, Japanese Patent Application Laid-Open No.
There is a type disclosed in Japanese Patent Publication No. 7-179836 in which a polymerizable compound is imagewise cured by imagewise exposure, and then it is overlapped with an image receiving material and pressure is applied to obtain a visible image. This photosensitive and pressure sensitive material has a synthetic polymer resin wall capsule containing a vinyl compound, a photopolymerization initiator, and a colorant precursor supported on a support.

Another example is a type in which a latent image generated by imagewise exposure is subjected to preliminary heat development or wet development, and then the image-receiving material is overlapped with pressure to obtain a visible image. Examples of such materials include Japanese Unexamined Patent Publication No. 1983-1999 filed by the present applicant.
There is one disclosed in Japanese Patent No. 278849. This material is used to transfer a color image-forming substance to an image-receiving material having an image-receiving layer after thermal development to obtain an image on the image-receiving material.
At least a photosensitive silver halide, a reducing agent, a polymerizable compound, and a color image-forming substance are coated on a support, and at least the polymerizable compound and the color image-forming substance are encapsulated in the same microcapsule. It is.

[Embodiment]

Next, preferred embodiments of the peeling device according to the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 is a schematic diagram of an image recording apparatus equipped with a peeling device according to an embodiment of the present invention. In addition, in this embodiment,
The photosensitive material used here is a photosensitive and pressure sensitive material that requires a heat development process and in which an image is transferred onto an image receiving material having an image receiving layer.

Inside the housing 12 constituting the image recording device, there is a photosensitive material supply section 13 that stores the photosensitive material A, an image reading section 15 that reads image information carried on the document S, and a latent image formed on the photosensitive material A. an exposure section 16, a heat development section 17 that heat-processes the photosensitive material A, an overlapping section 19 that superposes the image receiving paper C on the photosensitive material A, and a pressure transfer section that presses the photosensitive material A and the image receiving paper C. A section 21, a peeling section 23 for stripping the image-receiving paper C from the photosensitive material A, and a post-heating section 25 for heating the image-receiving paper C are provided, respectively.

A transparent document support glass plate 14 on which a document S is placed is arranged on the upper surface of the housing 12, and the image reading section 15 is arranged below this document support glass plate 14. That is, the image reading section 15 includes a light source 18 that integrally scans the front surface of the document support glass plate 14, a mirror 20a1, and an imaging lens/filter unit assembly 30, the details of which will be described later.
Further, mirrors 20b, 20c and a fixed mirror 20d move in the same direction by the scanning distance of the light source 18, etc.
20e and 2Of, which are surrounded by a partition wall 22 and optically isolated from other parts. However, in this case, an exposure opening 34 for the exposure section 16 of the photosensitive material A is defined in the partition wall 22 at a portion through which the optical axis 32 of the image reading section 15 reflected by the fixed mirror 2Of passes. A shutter device 35 and a shutter control device 36 are arranged in the exposure opening 34 .

On the other hand, the photosensitive material supply section 13 is provided on the left side of the housing 12 and is held in a light-tight manner by a partition wall 52. This photosensitive material supply section 13 is loaded with a removable photosensitive material magazine 54 in which photosensitive material A is wound.

The photosensitive material supply section 13 has roller pairs 56a to 56d for conveying the photosensitive material A from the magazine 54 to the exposure section 16. In this case, roller pair 56a.

A cutter 58 for cutting the photosensitive material A into predetermined lengths is provided between the cutters 56b. Further, the guide plate 60 disposed between the roller pair 56C156d faces the exposure opening 34 defined at the bottom of the partition wall 22 surrounding the image reading section 15.

A heat developing section 17 surrounded by a heat-insulating partition wall 62 is disposed in front of the exposure section 16 (hereinafter, "front" refers to the downstream side with respect to the traveling direction of the photosensitive material, etc.). In the heat developing section 17, the photosensitive material A is passed through a guide plate 60 to a roller 64, an endless belt 68 which is hung around guide rollers 55a and 66b, and a guide member 7.
0. The heating and developing section 17 includes a hollow cylindrical heating drum 74 containing a halogen lamp 72, and four belt support rollers 76 on the outer periphery of the heating drum 74.
．． The endless belt 84 is supported by 78, 80, and 82 and is in sliding contact with the endless belt 84, and the photosensitive material A is held and conveyed in a heated state.

The photosensitive material A carried out from the heat developing section 17 is placed on the guide plate 8.
6 through the roller pair 56e.
9. The overlapping portion 19 has a 7-shaped guide plate 88, and this Y-shaped guide plate 88 is connected to the roller pair 5.
6e, and a pair of rollers 56f.
a second carry-in path 88b close to the first and second
It is composed of a carry-in path 88c where the carry-in paths 88a and 88b merge and are close to the roller pair 56g.

On the other hand, a cassette 90 for storing image-receiving paper C is loaded on the right side of the housing 12. In this case, a paper feed roller 92 is disposed at the top of the cassette 90, and the image receiving paper C is transferred from the roller pair 56f to the Y-shaped guide plate 88 via the roller pair 56h by the paper feed roller 92. It is supplied to the second carry-in path 88b. In addition, inside the housing 12,
A manual feed port 94 is defined in the upper part of the cassette 90, and it is also possible to feed the image receiving paper C from this manual feed port 94 to the second carry-in path 88b via the roller pair 56i.

A pressure unit including a pressure transfer section 21 and a peeling section 23 is disposed in front of the roller pair 56g. This pressure unit includes a pair of pressure rollers 98 and 100 that are rotationally driven by a rotational drive source (not shown), and the pressure roller 98.
Backup rollers 102 and 104 are provided to equalize the pressing force of 100 in the axial direction.

On the other hand, a blade 106 rotatably supported on a support plate (not shown) is disposed between the roller pair 56g and the pressure roller 98. The other end of the blade 106 is pulled by a spring 108 so that one end comes into sliding contact with the pressure roller 98.

A peeling section 23 is provided in front of the pressure transfer section 21 . The peeling section 23 has a pair of rollers 56j and a peeling claw 110 that biases the photosensitive material A onto one of the rollers of the pair of rollers 56j. Further, in front of the pair of rollers 56j, first and second discharge paths 116a, 1 which are formed into a substantially A-shape are formed by guide plates.
16b is provided.

The first unloading path 116a includes roller pairs 56 to 560.
The waste box 1 is placed below the photosensitive material magazine 54 via the
18 are installed in a row. In this case, the photosensitive material A is put into the waste box 118.

Further, in front of the second unloading path 116b, a take-out tray 120 disposed below the heat developing section 17 is connected via roller pairs 56p to 56q, and the image-receiving paper C is led out to this take-out tray 120. Ru. In addition, roller pairs 56j, 56p
A post-heating section 25 having a pair of heating rollers 122 is disposed between them, and heats the image-receiving paper C to promote color development of the image.

Further, a color density detection unit 124 for detecting the color density of the image on the image receiving paper C is arranged between the roller pair 56p and 56Q. The color density detection unit 124 includes an illumination device 126 that illuminates the image surface of the image receiving paper C, and a color photosensor 128 that receives reflected light from the image receiving paper C due to this illumination.

The apparatus further includes a color density control unit 1 connected to the imaging lens/filter unit assembly 30 and the photosensor 128 and disposed at a suitable location within the housing 12.
50, the color density control unit 150, the photosensitive material supply section 13, the image reading section 15, the drive system of the image reading section 15 (not shown), the cutter 58, the shutter control device 36, the heat development section 17, and the pressure transfer. A system control device (not shown) connected to the section 21, the stripping section 23, and the post-heating section 25 to control the entire apparatus is provided.

FIG. 2 is a schematic diagram of the peeling section 23.

The peeling section 23 includes a 10th pair 56j for transporting the photosensitive material A and the image receiving paper C that have been superimposed, a peeling claw 110 for biasing the photosensitive material A to one of the 10th pairs 56j, and a photosensitive material after peeling. No. 20-, which conveys material A and image receiving paper C, respectively.
56r and 56S. Each roller pair 56j
, 56r, 56S have the same diameter and are rotationally driven by a driving means (not shown), and the 20th pair 56r, 56s has the same diameter as the 10th pair.
- It is driven at a faster circumferential speed than the rubber pair 56j. Therefore, the 20th pair 56r, 56s transports the photosensitive material A and the image receiving paper C faster than the 10th pair 56j.

It is preferable that the 20th la pairs 56r and 56s are driven faster than the 10th la pair 56J, specifically, faster than 0% to about 10%, and the photosensitive material A and the image receiving paper C are is transported by the 20th pair 56r and 56S. Then, the photosensitive material A and the image receiving paper C are placed in the second
0-ra vs. 56r.

When conveyed to 56S, the photosensitive material A and the image-receiving paper C slip to the 10th-ra pair 56''.

Further, by connecting the 10th La pair 56j to the driving means via an overload clutch, when an overload is applied to the 10th La pair 56j, the driving force is not applied to the 10th La pair 56j. As the light-sensitive material A and image-receiving paper C move, the 10th-RA pair idly rotates to follow the movement of the photo-sensitive material A and image-receiving paper C.
This can prevent slipping between the 10th pair 56j and the 10th pair 56j.

Further, the 20th-ra pairs 56r and 56S are arranged so that the angle α formed by the transport path of the photosensitive material A and the image receiving paper C after peeling is larger than the angle β of the narrowed part of the peeling claw 110. Therefore, the image-receiving paper C after peeling does not come into contact with the peeling claw 110 and is reliably conveyed toward the waste box 118, thereby preventing the image-receiving paper C from jamming in the peeling section 23.

In addition, in this embodiment, the above-mentioned 10th-ra pair 56j
and the 20th la pair have the same diameter, so the 20th la pair 56r
, 56s is configured to transport the photosensitive material A and the image receiving paper C by making the rotational driving speed of the 10th pair 56j faster than the rotational driving speed of the 10th pair 56j. The 20th-ra pair 56r has a larger diameter than the 10-ra pair 56j.

The circumferential speed of 56S may be made faster than that of the 10th pair 56j.

〔Effect of the invention〕

According to the present invention, the front ends of the photosensitive material and the image-receiving material after peeling are transported faster than the rear ends before peeling, so that the photosensitive materials are not subjected to load by the peeling claw and wrinkles are generated. It is possible to reliably transport and peel off, and prevent jams at the peeling part.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic diagram of an image recording apparatus having an embodiment of the present invention, and FIG. 2 is a schematic diagram of a peeling section. Code in the figure: 10 Image recording device 12 )\Uji puffer fish 13
Photosensitive material supply section 14 Document support glass plate 15 Image reading section 17
Heat development section 18 Light source 19 Overlapping section 21 Pressure transfer section 23 Peeling section
25... Post-heating section 30 Imaging lens/filter unit assembly 32 Optical axis 36 - Shutter control device 56 a ~ 56 SO-RA pair 58 - Cutter 7
2-・Halogen lamp 74 Heating drum 88・
-Y-shaped guide plate 90 Cassette 92 Paper feed roller 98.100--Pressure roller 102.104 Backup roller 124 Color density detection unit 126/Lighting device 128 Color photo sensor 130. Peeling plate 132- slit 13
4-Guide plate 136...protrusion 138/hole
140...Peeling plate 142/Member 150--One-color density control unit A, photosensitive material C--Receiving paper Fig. 2

Claims (1)

[Claims] A peeling device that peels off an imagewise-exposed photosensitive material and an image-receiving material after the images have been transferred by overlapping the materials, the peeling device comprising: a pair of first conveyance rollers; and a peeling device provided downstream of the conveyance rollers. a peeling pawl that biases the previously conveyed photosensitive material or image-receiving material to one of the conveying rollers; and two pairs of second pairs that convey the photosensitive material and the image-receiving material in different directions downstream of the peeling pawl. A peeling device comprising a conveyance roller, wherein the second conveyance roller is driven to convey the photosensitive material and the image-receiving material faster than the first conveyance roller.