JPH0193741A - Image recorder - Google Patents

Abstract

PURPOSE:To prevent photosensitive material or image receiving material from winding onto a pressurizing nip roll greatly by providing a means detecting that said materials stick to said roll. CONSTITUTION:A transfer device 88 pressurizing and transferring images on the photosensitive material S onto an image receiving sheet C is provided with the sticking detection means such as a photosensor 152. A sensor 152 consisting of a light emitting element 150, a light receiving element 151 and a photoelectric converter 153 is arranged in the vicinity of the peripheral surface on the discharge side of a roll 80, out of pair pressurizing nip rolls 80 and 82. Then, a change in the light quantity reflected by the roll 80 is detected, and the sticking of the sheet C to the roll 80 is also detected. When said sticking is detected, signals from a deciding device stop the rotation of the rolls 80 and 82, and the further winding can be prevented. The photosensor can be arranged in the vicinity of the roll 82, as well.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention uses a photosensitive material coated on a material support on which an image formed by imagewise exposure is fixed by pressure. An image recording device that presses and transfers an image obtained on a photosensitive material to an image-receiving material by overlapping a photosensitive material and an image-receiving material. The present invention relates to an image recording device K that transfers an image onto an image receiving material.

[Conventional technology]

An example of an image recording material that requires a pressure treatment step is disclosed in Japanese Patent Application Laid-Open No. 179836/1983. A vinyl compound, a photopolymerization initiator, and a colorant are placed on a support. A system in which a synthetic polymer resin-walled capsule containing a precursor is supported is known.The image recording method using this system is to imagewise harden the microcapsules by exposure to light, and harden the unhardened microcapsules by applying pressure. A color image is obtained from the colorant precursor released by rupturing a colorant precursor, but this method has the characteristic that high quality images can be obtained by a simple dry process.However, this system has the disadvantage of significantly lower photosensitivity than systems using silver halide.

A patent application filed in 1986 by the present applicant has proposed a new recording material that improves these drawbacks, has high photosensitivity, and is capable of obtaining high-quality images through simple dry processing.
It is disclosed in the specification of No. 117089. In this recording 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 coated on a support. It consists of a photosensitive composition encapsulated in microcapsules.

Regarding the image recording method of recording an image using this photosensitive material, there is a patent application filed in 1212-1988 filed by the present applicant.
It is disclosed in the specification of No. 84. This image one-image recording method first performs imagewise exposure and m1#! is formed and then developed by heating to polymerize the polymerizable compound in the area where the 1 m image is present to form a polymer compound and harden the microcapsules.

Next, the image-receiving layer has a receiving material to which the color image-forming substance can be transferred, and is pressed, and a small portion of the microcapsules in the area where the latent image does not exist is ruptured to receive the one-color image-forming substance. An image is obtained on an image-receiving material by transferring it to a material.

Then, using the above-mentioned photosensitive material, this photosensitive material is subjected to imagewise exposure, heat development is performed, and then it is overlaid with an image-receiving material and pressurized, until an image of desired density and desired color density is obtained on the image-receiving material by transfer. An image recording device that automatically performs this has also been proposed.

[Problem that the invention seeks to solve]

In this 1iIJ image recording apparatus, in order to transfer the photosensitive material after the heating phenomenon to the receiving material, the photosensitive material and the image receiving material are overlapped and inserted between a pair of pressure nip rollers from the front and back sides. For example, it is pressurized at a high pressure of 500 to 9/criL. For example, 5BR (styrene butadiene rubber), PVA (polyvinyl alcohol), and gelatin are used in the coating layer of the photosensitive material and the receiver material.

If a chemical substance such as a binder is included and the size of the photosensitive material and the receiving material are different, even if the photosensitive material and the receiving material are in contact with each other, the applied layer of the larger material may be removed by the pressure nip roller. If it comes into contact with the pressure nip roller at an angle of 5°, the chemical substances in the coating layer will act as an adhesive, causing the photosensitive material and/or the receiving material to cling tightly to the pressure nip roller and not be conveyed properly, making it impossible to record images reliably. The problem is that there is no.

Furthermore, if the photosensitive material and/or the image-receiving material are stacked face-to-face and pressed, the photosensitive material and/or the image-receiving material will not only tightly wrap around the pressure nip roller and be conveyed properly, but also cause damage to the photosensitive material and/or the image-receiving material. Alternatively, it becomes difficult to even peel off the image receiving material from the pressure roller.

SUMMARY OF THE INVENTION An object of the present invention is to solve the above-mentioned problems, and to provide an image recording apparatus that can quickly remove photosensitive material and/or image-receiving material even if they adhere to the pressure nip roller. be.

[Means and effects for solving the problems] The above object of the present invention is achieved by using a photosensitive material in which a material on a support is provided with a substance on which an image produced by imagewise exposure is fixed by pressure;
There is an image recording apparatus that superimposes the photosensitive material and the image-receiving material and pressurizes and transfers the image obtained on the photosensitive material to the image-receiving material. This is achieved by an image recording apparatus characterized by comprising an adhesion detection means for detecting adhesion of the photosensitive material and/or image-receiving material.

That is, by quickly detecting that the photosensitive material and/or image-receiving material has adhered to the pressure nip roller 2 by the adhesion detection means, for example, the adhesion of the photosensitive material and/or image-receiving material to the pressure nip roller 2 is detected. The rotation of the pressure nip roller can be stopped, and the photosensitive material and/or image-receiving material attached to the pressure nip roller can be easily removed.

As the adhesion detection means, for example, an optical sensor is used that irradiates the pressure Nizzo roller with light and detects the reflected light.

In the present invention, the photosensitive material refers to a material for obtaining a visible image by applying pressure to a latent image generated by imagewise exposure.

Further, the present invention can be applied to both a system in which the exposed portion is polymerized and hardened, and a system in which the exposed portion is dissolved and softened.

An example of such a material is a type in which a 1f-compatible compound is cured in a pattern by imagewise exposure and then pressure is applied to obtain a visible pattern, as disclosed in Japanese Patent Laid-Open No. 57-1999 filed by the present applicant. The material disclosed in Japanese Patent No. 179836 is mentioned. This material has a synthetic polymeric resin wall capsule containing a vinyl compound, a photoinitiator, and a colorant precursor carried on a support.

Also, after containing silver halide and applying light, thermal development is performed to develop the silver halide, and at the same time, a polymerizable compound is cured in correspondence with this sum image, and then pressure is applied to form a visible image. The material disclosed in Japanese Patent Application No. 121284/1984 related to bleeding by the present applicant is cited as a material of the type that obtains a thermal image. After performing this step, a color image-forming substance is transferred to an image-receiving material having an image-receiving layer to obtain an image on the image-receiving material, and at least photosensitive silver halide,
A reducing agent, a polymerizable compound, and a color image-forming substance are coated, and at least the polymerizable compound and color image-forming substance are encapsulated in the same microcapsule.

[Embodiment]

Embodiments of the present invention will be described below based on the accompanying drawings.

FIG. 1 is a sectional view of an image recording apparatus according to an embodiment of the present invention.

The image recording apparatus includes a document supporting glass plate 2 mounted on the upper surface of a Hau-Kung 1 so as to be slidable back and forth in the direction of arrow A.

That is, the glass plate 2 is moved back and forth in the direction of arrow A with the document placed face down.

At the bottom of the glass plate 2, there is a reflecting mirror 6 for illuminating the original.
A fiber lens array 10 for forming an original image on a photosensitive material S at a predetermined position is provided.

A photosensitive material macrobun 14 containing a photosensitive material roll 12 wound with a photosensitive material S is removably attached to the side of the housing 1. At the outlet 16 of the photosensitive material S of the photosensitive material magazine 14, a pair of photosensitive material feeding rows 221 and 22 housed in the magazine connection dark box 20 are arranged.
As a result, the photosensitive material S, which had been wound on a photosensitive material roll of 12VC,
is extended by a certain length at a predetermined time, and is retracted as desired.

When the leading end of the photosensitive material S advances, the photosensitive material feeding rows 221 and 22 move away from each other as shown by imaginary lines to facilitate the advancement of the photosensitive material S. A cutter unit 23 for cutting the photosensitive material S and a guide plate 24 are disposed in front of the magazine connection dark box 20 (hereinafter, the term "front" refers to the downstream side in the traveling direction of the photosensitive material, etc.).

In front of the guide plate 24, an exposed photosensitive material support row 226 and two photosensitive material nig rollers 28 and 30 pressed against the exposed photosensitive material support row 226 are arranged t4. The photosensitive material S guided by the guide plate 24 is brought into close contact with the exposed photosensitive material support row 226 by the photosensitive material nip rollers 28.30, and the fiber lens array 10 at a position 32 between the photosensitive material nip rollers 28.300 forms an image of the original. Exposure is made.

In front of the exposed photosensitive material support row 226, a heat developing device 40 that heats and develops the exposed photosensitive material S is arranged. The heat developing device 40 includes a developing how and tongue 41 having a heat insulating effect, a conveying P ram 42 disposed inside the developing how and tongue 41 and carrying and conveying the photosensitive material S, and a conveying drum 420 having a circumference of about 240 degrees. The heating plate 43 is pressed against the outer periphery of the circular arc by a spring 48, and the photosensitive material S is sandwiched and conveyed between the conveying drum 42 and the heating plate 43 while being heated and developed. The heat developing device 40 further includes a photosensitive material S.
It has a pair of conveyance rollers 44 and a guide member 45 that guide the photosensitive material S to the conveyance drum 42, and a peeling claw 47 that peels off the photosensitive material S from the conveyance drum 42 and guides it to the contact portion of the conveyance roller 46.

In front of the conveyance row 246, a pair of pressure contact rows 260,
A guide member 61 guides the photosensitive material S transported by the transport roller 46 to the contact portion of the pressure roller 60 , and a guide member 61 guides the image receiving paper C supplied from the image receiving paper supply device 72 and transported by the transport roller 262 to the contact portion of the pressure roller 60 . A photosensitive material receiver paper stacking device 7 comprising a guide member 63 that guides the paper to the contact portion.
0 is placed.

The image-receiving paper supply device 72 includes an image-receiving paper cassette 76 that is attached to the side of the housing 1 and stores the receiver/lower paper C, and a transport roller 62 that transports the uppermost image-receiving paper C in the image-receiving paper cassette 73.
It consists of a feeding roller 74 and a guide member 75.

In front of the photosensitive paper stacking device 70, a pair of pressure nip rollers 80.82 and a pressure nip roller 80.8 are provided.
Backup rollers 84 and 86 for uniformizing the pressure of the two pressure nip rollers 80 and 82 in the axial direction, a release agent coating device w76 and 77 that applies a release agent to the pair of pressure nip rollers 80 and 82, and the photosensitive material S and the image receiving material. Press paper C with nip roller 80.8
A transfer device 88 is provided which includes peeling claws 78 and 79 for peeling off the paper from the paper 2 and guiding it to the guide member 92. Pressure nip low? 80 and 82 are pressed against each other at a pressure of about 500 k19/c/l. A photoreceptor paper peeling device 90 is provided in front of the transfer device 88. The photosensitive material receiving paper peeling device 90 includes a guide member 92, a feed roller 94, and a guide roller 98 so as to press only the photosensitive material S at both end portions on the feed row 294.
．． 100 and a peeling belt 102 wrapped around it.

A sensitive material disposal section 104 is provided below one side of the peeling device 90, and a fixing device 106 is provided in front. The sensitive material disposal section 104 includes a guide member 108 and a pair of feed rollers 11.
0 and 112, and a waste box 114, and the photosensitive material S sent from the peeling device 90 and guided by the guide member 108 is fed into the waste box 114 by the feed rollers 110 and 112.

The fixing device 106 includes a guide member 120, an ultraviolet irradiation lamp 124 with a reflection member 122, and a pair of feed rollers 126, 128. Paper C is irradiated with ultraviolet light for about 5 seconds to perform fixing.

A take-out tray 130 for receiving the image receiving paper C is attached to the front of the fixing device 106 so as to protrude from the housing 1 .

FIG. 2 is a block diagram of the pressure transfer device 88. - Pressure nip roller 8 located on the image-receiving paper side of the photosensitive material S and image-receiving paper C that are sandwiched and conveyed by the pair of pressure nip rollers 80 and 82.
A light emitting element 150 and a light receiving element 1 are located near the circumferential surface on the discharge side of the
51 and a photoelectric conversion device 153. The pressure nip roller 8 is then detected by detecting the change in the amount of reflected light from the pressure nip roller 80.
It is possible to detect the adhesion of the image receiving paper C to 0.

The light emitted from the light emitting element 150 is reflected by the pressure nip roller 80, enters the light receiving element 151, is converted into an electric signal by the photoelectric conversion device 153, and this electric signal is amplified by an amplifier and then sent to the determination device. is input.

The determination device stores the electric signal obtained by reflecting the light from the light emitting element 150 onto the pressure nip roller 80Vc as a reference value, and stores the electric signal constantly detected by the optical sensor 152 while the pressure nip roller 800 is rotating. Compare with standard value. The pressure nip roller 80 is made of metal and has a mirror-finished peripheral surface.The light from the light emitting element 150 is regularly reflected by the pressure nip roller 80 and almost never reaches the light receiving element 151. At this time, the electrical signal generated by the light reflected from the pressure nip roller 800 is used as a reference electrical signal.

When the image receiving paper C adheres to the pressure nip roller 80, the light from the light emitting element 150 is diffusely reflected by the wrapped image receiving paper C and the reflectance increases, so the obtained electrical signal also becomes thicker. If the electrical signal obtained by the optical sensor is larger than the reference electrical signal by a predetermined level, it is determined that the image receiving paper C has adhered to the pressure nip roller 80.

When it is detected that the image receiving paper C has adhered to the pressure nip roller 80VC, the determination device 5. provides a signal to the drive controller, which provides a stop signal to the rotational drive of the pressure nip rollers 80,82.

Therefore, the rotation of the pressure nip rollers 80 and 82 is stopped at the same time that adhesion of the image receiving paper to the pressure nip roller 80 is detected, and further winding of the image receiving paper can be prevented. In order to suppress as much as possible the wrapping of the image-receiving paper C until it is detected by the optical sensor 152, the optical sensor 152 is preferably provided near the contact portion of the pressure nip roller 80°82.

When the adhesion of the image receiving paper C to the pressure nip roller 80 is detected, the pressure nip rollers 80 and 82 stop, preventing the image receiving paper from being caught between the backup row 284 and the pressure nip row 280, and causing the image receiving paper C to stick to the pressure nip roller 80. C can be easily removed. By configuring the pressure nip rollers 80, 82 to be further released when the drive is stopped, the image receiving paper C can be removed even more easily.

The above embodiment is particularly effective when the image-receiving paper C is conveyed with the front side reversed because the optical sensor 152 is provided for the pressure nip roller 80 on the image-receiving paper side.

Furthermore, even if the image receiving paper C is conveyed properly on both sides, the photosensitive material S
If it is larger, there is a risk that it will adhere to the other pressure nip roller 82, so this pressure nip roller 82 may also be provided with an optical sensor 152.

Since the optical sensor 152 is provided for each pressure nip roller 80, 82, the pressure nip roller 80.
It is possible to quickly detect that the image receiving paper C or the photosensitive material S has adhered to the 0.82 paper, and the jam clearing process in the pressure transfer device 88 is facilitated.

〔Effect of the invention〕

According to the present invention, since the pressure nip roller is provided with an adhesion detection means such as an optical sensor that detects the adhesion of the photosensitive material and/or image receiving material to the pressure nip roller, the photosensitive material and/or the image receiving material can be deeply attached to the pressure nip roller. It is possible to detect adhesion before it wraps around, and by stopping the rotation of the pressure nip roller at the same time as detection, it is possible to prevent the photosensitive material and/or image-receiving material from wrapping after the adhesion is detected, making it easier to clear the jam. .

[Brief explanation of the drawing]

FIG. 1 is a sectional view of an image recording device according to an embodiment of the present invention, and FIG.
The figure is a configuration diagram of a pressure transfer device. Symbols in the figure: S...Photosensitive material C...Receiver paper 1...Hau, lamp 2...Glass plate 6...Reflector 8...Illumination lamp 10...Fiber lens array 12. ...Sensitive material roll 14...Sensitive material machine magazine 16...Exit 20...Magazine adhesion dark box 21.22...Sensitive material feeding roller 23...Cutter unit 24...Guide plate 2
6...Exposed sensitive material support rollers 28, 30...Sensitive material nip roller 62...Exposure position 40.P.Heat developing device 41
... Current housing 42 ... Conveyance drum 43 ...
・Heating plate 44.46... Conveyance roller 45...
Guide member 47... Peeling claw 48... Shaft 4
9... Spring 50... Insulating material 51:... Temperature detector 52... Temperature control device 56... Switch
54... Spring 60... Pressure roller 61,6!
i... Guide member 62... Conveyance roller 70... Sensitive material image receiving paper stacking device 72... Image receiving paper supply device k 75... Image receiving paper cassette 74... Feeding row 2 75... Guide member 76.
77...Mold release agent coating device ・78.79...
Peeling claw 80.82...Pressure nip roller 84.86...Backup roller 88...Transfer device 90...Sensitivity image receiving paper peeling device 92...Guide member 94...Feed roller 95...
...Supporting member 96...Felt 98.100.
... Guide roller 102 ... Peeling belt 104 ... Sensitive material disposal section 1
06... Fixing device 108... Guide member 11
0.112...Feed roller 114...Disposal number 120...Guide member 122...Reflection member 124...Lamp 12
6.128...Feed roller 130...Take out tray

Claims (1)

[Scope of Claims] 1) Using a photosensitive material whose support is coated with a substance on which an image produced by imagewise exposure is fixed by pressure, the photosensitive material and an image-receiving material are superimposed to produce a photosensitive material. An image recording device that pressure-transfers an image obtained on a material to an image-receiving material, wherein the photosensitive material and/or image-receiving material after being pressed has adhered to the surface of at least one of a pair of pressure nip rollers. An image recording device comprising an adhesion detection means for detecting adhesion. 2) The image recording apparatus according to claim 1, wherein the detection means is an optical sensor.