JPH05341478A - Image recorder - Google Patents

Abstract

PURPOSE:To obtain an image recorder where the drying property of an image receiving material on which an image is formed by thermal developing and transfer can be enhanced, unnecessary traces are not left and the quality of the image can be improved. CONSTITUTION:The peeling position of a photosensitive material 16 by a bending and guiding roller 142 and a peeling pawl 154 is provided on an upstream side in a carrying direction and at a higher position than the peeling position of the image receiving material 108 by a peeling roller 174 and a peeling pawl 176. Therefore, vapor generated when the material 16 is separated from the material 108 and peeled from a heating drum 116 rises as it is and it is not attached on the material 108. Therefore, the drying property of the material 108 is enhanced and the traces of the roller or the like are not left on the material 108 when the material 108 is carried thereafter. Besides, the quality of the recorded image is improved.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image recording apparatus for performing image recording processing using a photosensitive material and an image receiving material.

[0002]

2. Description of the Related Art An image recording apparatus is known which performs an image recording process using a light-sensitive material and an image-receiving material.

In this type of image recording apparatus, the light-sensitive material and the image-receiving material are housed in roll-shaped magazines each having a light-shielding interior, and are sequentially drawn out each time an image recording process is performed. used. Further, the image recording apparatus is provided with a water coating section for coating the image forming solvent on the photosensitive material, and further, from a heating drum and an endless pressure welding belt which is in pressure contact with the outer circumference of the heating drum and rotates together with the heating drum. The heat development transfer section is arranged.

The photosensitive material, which has been pulled out from the magazine by a predetermined size and cut, is exposed with an image while being nipped and conveyed by conveying rollers, and further, water as an image forming solvent is applied in the water application section, and then the heat development transfer section. Sent to. On the other hand, like the photosensitive material, the image receiving material is pulled out from the magazine by a predetermined size and cut, and is fed to the thermal development transfer section in synchronization with the photosensitive material by the conveying roller. In the heat-development transfer section, the light-sensitive material coated with water is superposed on the image-receiving material, and in this state, the light-sensitive material is closely wound around the outer periphery of the heating drum. Further, both materials are sandwiched and conveyed between the heating drum and the endless pressure contact belt, the photosensitive material is thermally developed, an image is transferred to the image receiving material, and a predetermined image is formed (recorded) on the image receiving material. is there.

[0005]

By the way, in such a conventional image recording apparatus, the photosensitive material wound around the outer periphery of the heating drum and conveyed is separated from the image receiving material by the peeling claws and the like. The image receiving material which has been peeled off and on which a predetermined image has been formed (recorded) is similarly peeled off from the heating drum by a peeling claw after being separated from the photosensitive material, and taken out of the apparatus. There is a problem that vapor generated when the photosensitive material is separated from the image receiving material and peeled off from the heating drum adheres to the image receiving material, which deteriorates the drying property of the image receiving material.

That is, if the image receiving material has poor drying property, traces such as a conveying roller for conveying the image receiving material remain on the image receiving material when the image receiving material is peeled from the heating drum and taken out of the apparatus. Markedly reduced.

In this case, the image receiving material on which a predetermined image is heat-developed and transferred between the heating drum and the endless pressure contact belt is completely removed when the image receiving material is separated from the heating drum (when it is nipped by the conveying roller). In the dry state, such a problem does not occur, but it is extremely difficult to bring the image receiving material separated from the photosensitive material and separated from the heating drum into a completely dry state in a short time. Further, if the subsequent processing such as transportation is interrupted until the image receiving material is completely dried, the time required for the entire image recording processing is significantly increased, which is not a fundamental solution.

In consideration of the above facts, the present invention can improve the drying property of an image receiving material on which an image is formed by heat development transfer, thereby improving the image quality without leaving unnecessary traces. The aim is to obtain a recording device.

[0009]

In an image recording apparatus according to the present invention, a photosensitive material is imagewise exposed while being conveyed and an image forming solvent is applied, and then the image receiving material is closely contacted with the photosensitive material and superposed thereon. Both materials are wound around a heating drum in a state where the materials are located inside, and while being conveyed by rotation of the heating drum, a heat development transfer process is performed to form an image on the image receiving material, and then the photosensitive material is separated from the image receiving material. In an image recording apparatus that performs image recording processing by peeling the image receiving material from the heating drum and further peeling the image receiving material from the heating drum, the peeling position of the photosensitive material from the heating drum is more than the peeling position of the image receiving material from the heating drum. It is characterized in that it is provided on the upstream side in the conveying direction and at a high position.

[0010]

In the image recording apparatus having the above structure, the photosensitive material and the image receiving material which are wound around the heating drum and subjected to the heat development transfer process are first separated from the image receiving material located inside and the photosensitive material located outside. Peeled from the heating drum,
Further, the image receiving material located inside is peeled off from the heating drum.

Here, the peeling position of the photosensitive material from the heating drum is greater than the peeling position of the image receiving material from the heating drum.
Since it is installed on the upstream side in the conveying direction and at a high position, the vapor generated when the photosensitive material is separated from the image receiving material and separated from the heating drum rises as it is and flows to the photosensitive material side, where it is separated from the photosensitive material. Therefore, it does not adhere to the image receiving material located below. Therefore, the drying property of the image receiving material is improved.

Therefore, when the image receiving material is peeled from the heating drum and taken out of the apparatus, traces of the conveying rollers for conveying the image receiving material do not remain on the image receiving material, and the image quality is improved.

[0013]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic overall configuration diagram of an image recording apparatus 10 according to the present invention. Further, FIG. 2 shows an external view of the image recording apparatus 10.

The image recording apparatus 10 has a box shape as a whole, and a machine base 12 is provided with a front door 13 and a side door 15. Machine base 1 by opening each door
The inside of 2 can be exposed. Note that each door is provided with a safety device by a so-called interlock mechanism (not shown) so that the power of a predetermined portion can be turned off at the same time when the door is opened.

A photosensitive material magazine 14 is arranged in a machine base 12 of the image recording apparatus 10, and a photosensitive material 16 is wound and stored in a roll shape. The widthwise dimension of the photosensitive material 16 is, for example, 224 mm. The photosensitive material 16 has a photosensitive silver halide, a binder, a dye-donating substance, and a reducing agent on a support, and its photosensitive (exposure) surface is wound toward the lower side of the apparatus.

The photosensitive material magazine 14 is composed of a body (not shown) having a length corresponding to the widthwise dimension of the photosensitive material 16 and a pair of side frame portions fixed to both ends of the body. And is housed in a housing section provided on the machine base 12.

Further, an inner door (not shown) is arranged at the drawer portion of the photosensitive material magazine 14 of this accommodating portion, and when the photosensitive material magazine 14 is accommodated in the accommodating portion, the machine base 1
Even when the front door 13 of No. 2 is opened, external light does not enter the housing portion, and the stored photosensitive material 16 is prevented from being inadvertently exposed to light.

A nipping roller 18 and a cutter 20 are arranged in the vicinity of the photosensitive material take-out port of the photosensitive material magazine 14 so that the photosensitive material 16 can be cut out after being pulled out from the photosensitive material magazine 14 by a predetermined length. The cutter 20 is, for example, a rotary type cutter including a fixed blade and a movable blade, and the movable blade can be moved up and down by a rotary cam or the like to mesh the fixed blade and the photosensitive material 16. After the operation of the cutter 20, the nip roller 18 is rotated in the reverse direction, and the nip roller 18 is rewound to such an extent that the tip of the photosensitive material 16 is slightly nipped.

A plurality of conveying rollers 19, 21, 23, 24, 26 and a guide plate 27 are arranged on the side of the cutter 20, and the photosensitive material 16 cut into a predetermined length is sent to the exposure section 22. Can be transported.

The exposing section 22 is located between the carrying rollers 23 and 24, and the photosensitive material 16 passes through as an exposing section (exposure point) between these carrying rollers.

The transport speed of the photosensitive material 16 by the transport rollers 23 and 24 (passing speed of the exposure section) is
For example, it is 20 mm / sec.

An exposure device 38 is provided directly above the exposure unit 22. The exposure device 38 is provided with three types of LDs, a lens unit, a polygon mirror, and a mirror unit (all are not shown).

A switchback unit 4 is provided on the side of the exposure unit 22.
0 is provided, and a water application section 62 is provided below the exposure section 22. The photosensitive material 16 that has risen up the side of the photosensitive material magazine 14 and has been exposed in the exposure unit 22 is provided below the exposure unit 22 by the reverse rotation of the transport roller 26 after being once fed to the switchback unit 40. It is configured to be fed to the water coating section 62 via the above-mentioned transport path.

As shown in detail in FIG. 4, a coating tank 64 is arranged in the water coating section 62. In addition, the coating tank 6
4, a pair of supply rollers 66 is arranged at the upstream end of the photosensitive material 16 in the conveying direction, and a pair of squeeze rollers 68 are arranged at the downstream end of the photosensitive material 16 in the conveying direction.

Supply roller 66 and squeeze roller 68
Are both silicon rubber rollers having an outer diameter of 20 mm, and the rubber hardness of the supply roller 66 is, for example, 60 ± 5 and the squeeze roller 68 is, for example, 40.
It is set to ± 5. In addition, a predetermined pressing force (for example, 1 kg) is applied to both ends of each roller in the longitudinal direction. The supply roller 66 also serves as a registration roller for correcting so-called skew of the photosensitive material 16 conveyed from the switchback unit 40.

A guide plate 70 is attached above the coating tank 64 so as to face the coating tank 64. The guide plate 70 is made of a metal material such as aluminum, and the space between the guide plate 70 and the coating tank 64 is a passage for the photosensitive material 16. Therefore, when the coating tank 64 is filled with water, the supply roller 6
The photosensitive material 16 of which the skew is corrected by 6 is sent between the guide plate 70 and the coating tank 64 to be coated with water, and is further sandwiched and conveyed by the squeeze roller 68 so that excess water is removed. It has become.

In this case, the water coating length of the photosensitive material 16 between the guide plate 70 and the coating tank 64 (the length of passage of the photosensitive material 16 in water) is, for example, 100 mm. The immersion time is 2.5 seconds, for example. Further, the photosensitive material 16 after the water coating process (that is, after passing through the squeeze roller 68) has 11 ± 1 gr /
Water m ² is adapted to be applied.

A plurality of rows of ribs 76 are formed on the bottom surface of the coating tank 64, that is, the surface through which the photosensitive material 16 passes, so as to be inclined with respect to the conveying direction of the photosensitive material 16. It is possible to reduce the frictional resistance when passing through the gap 64 and prevent the photosensitive material 16 from being scratched at a certain position. Further, the coating tank 64 is provided with a drainage port 90 communicating with the accommodation portion of the squeeze roller 68, an overflow port 94 communicating with the overflow tank 92, and an auxiliary overflow port 95.

On the other hand, a through hole 72 is formed in the central portion of the guide plate 70 to serve as a water supply path. A ceramic heater 102 is attached to the upper part of the guide plate 70 to raise the temperature of the water passing through the through hole 72 (for example,
(40 ± 2 ° C.) to fill the coating tank 64.

The coating tank 64, the guide plate 70 and the squeeze roller 68 having the above-mentioned structure are constructed as one unit as a whole.

A plurality of pipes are connected to the water application section 62 constructed as described above so that water can be supplied. Here, FIG. 5 shows a water supply system diagram of the water application unit 62.

Through hole 72 of guide plate 70 of water application section 62
A supply pipe 78 is connected to the. A pump 80 and a filter 82 are arranged in the middle of the supply pipe 78, and the other end of the supply pipe 78 has an open lid 84.
And is located in the replenishment tank 86. The refill tank 86 is filled with water as an image forming solvent. Therefore, by driving the pump 80, the water in the replenishment tank 86 can be filled (replenished) into the coating tank 64 via the guide plate 70.

On the other hand, at the drainage port 90 of the coating tank 64,
The discharge pipe 96, one end of which is connected to the replenishment tank 86, is connected to the other end, and a solenoid valve 98 is arranged in the middle of the discharge pipe 96. This solenoid valve 98
Is normally closed (when the power is on), but when the power is off, it is opened and the water in the coating tank 64 is discharged to the replenishment tank 86 through the discharge pipe 96. You can Further, the solenoid valve 98 is fixed in a state of being slightly inclined with respect to the machine base 12, and prevents drainage from remaining inside. The overflow port 94 of the coating tank 64 is connected to the other end of a discharge pipe 100, one end of which is connected to an intermediate portion of the drain pipe 96 (between the electromagnetic valve 98 and the replenishment tank 86). further,
A drain pipe 101 is connected to the auxiliary overflow port 95, and the other end of the drain pipe 101 is guided into the tank tray 103.

On the side of the water application section 62, the heat development transfer section 10 is provided.
4 is arranged and is coated with water (squeeze roller 6
The photosensitive material 16 (after 8 passes) is fed in.

On the other hand, the machine base 12 on the side of the photosensitive material magazine 14
An image receiving material 106 is provided in the image receiving material 1
08 is rolled up and stored. The size of the image receiving material 108 in the width direction is smaller than the photosensitive material 16 (for example, 210 mm). Further, the image receiving material 10
A dye fixing material having a mordant is applied to the image forming surface of No. 8, and the image forming surface is wound toward the upper side of the apparatus.

The receiving material magazine 106 is the sensitive material magazine 14
Similarly to the above, it is composed of a body portion and a pair of side frame portions fixed to both end portions of the body portion, and the front side of the machine base 12 (front side of FIG. 1), that is, the width of the rolled image receiving material 108. direction)
It is possible to withdraw to.

A nip roller 110 is arranged near the image receiving material take-out port of the material receiving magazine 106, and the image receiving material 108 can be pulled out from the material receiving magazine 106 and the nip can be released.

A cutter 11 is provided on the side of the nip roller 110.
2 are arranged. The cutter 112 is a rotary type cutter including, for example, a fixed blade and a movable blade, like the above-described cutter 20 for the photosensitive material, and the movable blade is moved up and down by a rotating cam or the like to be engaged with the fixed blade. Thus, the image receiving material 108 drawn from the receiving material magazine 106 is cut into a length shorter than the photosensitive material 16.

On the side of the cutter 112, the photosensitive material magazine 1
An image receiving material transporting section 180 is provided at the side of 4. The image receiving material transport unit 180 includes a transport roller 186,
190, 114 and a guide plate 182 are arranged, and the image receiving material 108 cut into a predetermined length can be conveyed to the heat development transfer section 104. The transport roller 114 also serves as a registration roller for correcting a so-called skew of the image receiving material 108 transported from the image receiving material transport unit 180. Therefore, the skew of the image receiving material 108 is corrected by the conveying roller 114, and the thermal development transfer section 10 is subjected.
It is sent to 4.

As shown in FIG. 6, the heat development transfer section 104 is composed of a heating drum 116 and an endless pressure contact belt 118, and further, the heating drum 11 on the water application section 62 side.
A laminating roller 120 is arranged on the outer circumference of the roller 6.

The laminating roller 120 and the water application section 6
A guide plate 122 is arranged between the two squeeze rollers 68 and above the conveyance path of the photosensitive material 16, and corresponds to the back surface of the photosensitive material 16 sent from the squeeze roller 68 (the side opposite to the image forming surface). Laminating this with a roller 12
We are leading to 0.

A blade guide 124 is arranged at a position facing the guide plate 122. The blade guide 124 includes the bonding roller 120 and the image receiving material 1.
It is located between the transport roller 114 and the transport roller 114 and guides the image receiving material 108 sent from the transport roller 114 to the bonding roller 120. A dust removing sheet is attached to the surface of the blade guide 124,
The dust adhering to the image receiving material 108 is removed.

The laminating roller 120 is a roller having an outer diameter of, for example, 22 mm at the central portion in the axial direction, the outer peripheral surface of which is coated with silicon rubber (for example, a thickness of 2.35 mm), and the rubber hardness thereof is almost the same. It is set to 40 degrees. Further, the bonding roller 120 is pressed against the outer circumference of the heating drum 116 by applying a predetermined pressing force (for example, 9 kg) at both ends in the longitudinal direction. The laminating roller 120 is connected to the drum motor 200 via a drive system (not shown), and
The driving force of 0 is transmitted and rotated.
Incidentally, here, the photosensitive material 1 by the laminating roller 120
6, the conveying speed of the photosensitive material 16 or the image receiving material 108 by the squeeze roller 68 or the conveying roller 114 is set to be slightly (for example, about 2%) slower than the conveying speed of 6 and the image receiving material 108. Photosensitive material 1
6 and the image receiving material 108, the bonding roller 120
When it is sent to, the back tension is set to work.

The heating drum 116 is made of a thin aluminum pipe. In this embodiment, the heating drum 116 has a thickness of 3 mm.
mm, outer diameter 166 mm, and axial effective width 300 mm. The outer peripheral surface and the inner peripheral surface of the heating drum 116 are both subjected to black alumite treatment.

The photosensitive material 16 conveyed to the heat development transfer section 104 is sent between the bonding roller 120 and the heating drum 116, and the image receiving material 108 is the photosensitive material 1.
In synchronism with the conveyance of No. 6, the photosensitive material 16 is fed between the laminating roller 120 and the heating drum 116 in a state of being preceded by a predetermined length (23 mm in this embodiment) so as to be superposed. In this case, the image receiving material 10
Since the width 8 and the length 8 of the photosensitive material 16 are smaller than that of the photosensitive material 16, the peripheral portion of the photosensitive material 16 is projected from the peripheral portion of the image receiving material 108 on all four sides as shown in FIG. It is a structure that can be overlapped with.

A peeling groove 126 corresponding to a peeling claw 154 described later is formed on the outer peripheral portion of the heating drum 116 (see FIG. 8). In the present embodiment, the peeling groove 126 is formed with a width of 3 mm and a depth of 1 mm (or less).

Further, the cam 1 is provided on the side wall of the heating drum 116.
30 and the filler 131 are fixed. Cam 130
Is composed of a first engaging portion 130A and a second engaging portion 130B that is longer than the first engaging portion in the circumferential direction, and engages with a peeling claw 154 and a peeling claw 176 described later. As a result, the peeling claw 1 moves as the heating drum 116 rotates.
54 and the peeling claw 176 are rotated.
On the other hand, the filler 131 is used for detecting the alignment of the heating drum 116 with the photosensitive material 16 and the image receiving material 108.

Inside the heating drum 116, a pair of halogen lamps 132A and 132B are arranged. Each of the halogen lamps 132A and 132B has, for example, 400
The outputs are W and 450 W, and the surface of the heating drum 116 can be heated (for example, about 82 ° C.). In this case, the two halogen lamps 1
32A and 132B are used together, and only one halogen lamp 132A is used during the subsequent normal operation.

The endless pressure contact belt 118, which is in pressure contact with the outer periphery of the heating drum 116, has a structure in which a woven fabric material is covered with rubber, and in this embodiment, the widthwise dimension is formed to be 224 mm. The woven material is an aromatic polyamide fiber (for example, Kevlar or Nomex: both du
It is sewn with a heat-resistant fiber such as Pont's registered trademark). Further, the coating rubber is silicon rubber containing carbon and has conductivity.

The endless pressure contact belt 118 is wound around five winding rollers 134, 135, 136, 138 and 140, and the endless outer side between the winding rollers 134 and 140 is heated. It is pressed against the outer periphery of the drum 116.

In this case, as shown in FIG. 8, the endless pressure contact belt 118 sandwiches the photosensitive material 16 and the image receiving material 108 with the heating drum 116, and at the same time, the heating drum 116.
The widthwise ends of the photosensitive material 16 located on the outside with respect to
Since the image receiving material 108 located inside is projected and overlapped from both ends in the width direction, the projecting portions are in close contact with the outer periphery of the heating drum 116. Therefore, the image receiving material 108 located on the inner side is held so as to be wrapped by the photosensitive material 16 located on the outer side, and the two materials are prevented from firmly adhering to each other.

The winding rollers 134, 135, 136,
Each of 138 is made of stainless steel. Further, the winding roller 138 is formed in a tapered shape in which both ends in the axial direction thereof spread outward, and 2.0 kg (the practical range is 1.0 to 3.0) at both ends in the longitudinal direction.
(kg) is applied in the direction away from the heating drum 116. As a result, the endless pressure contact belt 118 is maintained at a predetermined tension and the deviation is prevented.

On the other hand, the winding roller 140 is a rubber roller, and is further connected to the drum motor 200 via a drive system (not shown).
The driving force of 0 is transmitted and the winding roller 140 is rotated. When the winding roller 140 is rotated, the endless pressure welding belt 118 wound around the winding roller 140 is rotated, and accordingly, the rotational force of the endless pressure welding belt 118 causes friction with the heating drum 116. The force is transmitted to the heating drum 116, and the heating drum 116 is driven to rotate. In this case, the rotating peripheral speed of the heating drum 116 is 40 mm / se.
It is c.

The drum motor 200 has a plurality of driving parts, that is, a winding roller 140, a laminating roller 120, a squeeze roller 68, and a bending guide roller 142, a peeling roller 174, and a sensitive material discharge roller 1 which will be described later.
58, 160, peeling roller 174, receiving material discharging roller 17
2, 173, and 175 are driven together.

The photosensitive material 16 and the image receiving material 108, which are superposed by the laminating roller 120, remain in the superposed state, and the heating drum 116 and the endless pressure contact belt 11 are kept.
8 and the heating drum 116 are sandwiched and conveyed over approximately 2/3 of the heating drum 116 (between the winding roller 134 and the winding roller 140). Furthermore, at the time when the photosensitive material 16 and the image receiving material 108 which are superposed are completely settled between the heating drum 116 and the endless pressure contact belt 118,
The heating drum 116 temporarily stops its rotation (for example, 5 to 1).
The sandwiched photosensitive material 16 and image receiving material 108 are heated for 5 seconds. When the photosensitive material 16 is heated during the nip and conveyance and when stopped, it releases a movable dye, and at the same time, the dye is transferred to the dye fixing layer of the image receiving material 108 to obtain an image.

As shown in detail in FIG. 3, the endless pressure welding belt 1
A bending guide roller 142 is arranged below the heating drum 116 on the downstream side in the material supply direction of 18. The bending guide roller 142 is a rubber roller made of silicon rubber, and rotates by receiving the driving force of the drum motor 200. Further, the bending guide roller 142 is pressed against the outer periphery of the heating drum 116 at a predetermined pressure (for example, 800 g). Therefore, the heating drum 116 and the endless pressing belt 11 are pressed.
Photosensitive material 16 or image receiving material 1 conveyed by
08 can be further pinched and conveyed.

A peeling claw 154 is provided below the heating drum 116 on the downstream side of the bending guide roller 142 in the material conveying direction.
A shaft 6 is rotatably supported by 6, and a pinch roller 157 is further arranged.

The peeling claw 154 corresponds to the outer periphery of the heating drum 116, and the first engaging portion 130A of the cam 130 described above.
By the action of, it is possible to move toward and away from the heating drum 116. When the peeling claw 154 is close to the heating drum 116, the tip of the peeling claw 154 enters the peeling groove 126 of the heating drum 116, and is nipped and conveyed between the endless press belt 118 and the heating drum 116. Of the photosensitive material 16 and the image receiving material 108, only the leading end portion of the photosensitive material 16 superposed in a state of being preceded by a predetermined length is engaged, and the leading end portion of the photosensitive material 16 can be separated from the outer periphery of the heating drum 116. ..

On the other hand, the pinch roller 157 has the peeling claw 15
4 and the peeling claw 154 is operated in association with the heating drum 11.
6 is pressed against the bending guide roller 142 with a predetermined pressure (for example, 600 g). Therefore, the photosensitive material 16 peeled by the peeling claw 154 is
While being pressed by the pinch roller 157, it is wound around the bending guide roller 142 and moved downward.

The position where the pinch roller 157 is pressed against the bending guide roller 142 and the bending guide roller 14
The distance between the second heating drum 116 and the pressure contact position is shorter than the non-overlapping length (that is, 23 mm) of the image receiving material 108 and the leading end portion of the photosensitive material 16 which are superposed by the laminating roller 120 described above. The arrangement and dimensions of each part are set so that (20 mm in this embodiment).

Sensing material discharge rollers 158 and 160 and a plurality of guide rollers 162 are arranged below the bending guide roller 142 and the peeling claw 154.
Photosensitive material 1 moved downward while being wound around 42
6 can be further transported and accumulated in the waste photosensitive material storage box 178. The photosensitive material discharge rollers 158 and 160 are configured to rotate by receiving the driving force of the drum motor 200 for driving the thermal development transfer section 104 as described above. The rotational speeds of the photosensitive material discharge rollers 158 and 160 are set to be 1 to 3% slower than the rotational peripheral speed of the heating drum 116, and prevent the photosensitive material 16 from being given a tension.

A drying fan 165 is arranged near the guide roller 162 to promote the drying of the photosensitive material 16.

As shown in detail in FIG. 3, the bending guide roller 1
A peeling roller 174 and a peeling claw 17 are provided in the vicinity of the heating drum 116 on the side of 42 (downstream in the conveying direction of the image receiving material 108).
6 are arranged. The peeling roller 174 is provided below the bending guide roller 142, and has a predetermined pressure (for example, 800 g) on the outer circumference of the heating drum 116.
It is pressed in. The peeling roller 174 is a rubber roller made of silicon rubber and has a surface roughness of 25 S or more, and is rotated by receiving the driving force of the drum motor 200 as described above.

On the other hand, the peeling claw 176 is the above-mentioned peeling claw 15.
4 corresponds to the outer circumference of the heating drum 116,
By the action of the second engaging portion 130B of the cam 130, the cam 130 can move toward and away from the heating drum 116. In this case, the dimensions of each part are set such that the time for the peeling claw 176 to approach (operate) the heating drum 116 by the cam 130 (the second engaging part 130B) is 3 seconds (or more). .. When the peeling claw 176 operates and approaches the heating drum 116, the image receiving material 108 that moves together with the heating drum 116 can be peeled from the outer periphery of the heating drum 116, and further, the image receiving material 108 peeled by the peeling claw 176. Is configured to be wound around the peeling roller 174 and bent and guided.

Below the peeling roller 174 and the peeling claw 176, a receiving material guide 170 is arranged, and also receiving material discharge rollers 172, 173, 175 are arranged, and the heating drum 1 is constituted by the peeling roller 174 and the peeling claw 176.
The image receiving material 108 separated from 16 can be guided and conveyed.

Here, each of the receiving material discharge rollers 172, 17
Reference numerals 3 and 175 denote a resin roller (for example, phenol resin or polyacetal resin) corresponding to the image forming surface side of the image receiving material 108 and a rubber roller (for example, silicone rubber or ethylene propylene rubber) corresponding to the opposite side to the image forming surface. ) And. That is, the material receiving roller 172 is composed of a resin roller 172A corresponding to the image forming surface side of the image receiving material 108 and a rubber roller 172B corresponding to the opposite side of the image forming surface.
The material receiving and discharging roller 173 is composed of a resin roller 173A and a rubber roller 173B, and the material receiving and discharging roller 175.
Is composed of a resin roller 175A and a rubber roller 175B.

Receiving material discharge rollers 172, 173, 175
Is applied with a clamping force (nip force) of 100 g to 300 g (pressure of 50 g to 150 g at both ends in the longitudinal direction).

A drum fan 168 as a drying means is arranged near the peeling roller 174. Therefore, the image receiving material 108 moving along the heating drum 116.
Is not only dried by the heat of the heating drum 116, but also accelerated by the drum fan 168. The drum fan 168 operates when necessary according to the atmospheric conditions. This is to keep the temperature distribution of the heating drum 116 uniform. Further, the receiving material guide 170 has a ceramic heater 2 as a drying means.
10 is arranged to further accelerate the drying of the conveyed image receiving material 108. The ceramic heater 210
The temperature is set to 70 ° C.

The image receiving material 108 peeled off from the outer periphery of the heating drum 116 by the peeling claw 176 while being accelerated in drying by the drum fan 168, is used as the material receiving guide 1.
70 and the receiving material discharge rollers 172, 173, and 175, and the sheet is discharged to the tray 177.

The heat development transfer section 10 having the above-mentioned configuration.
4 is configured as one unit as a whole, and is rotatable with respect to the machine base 12 in the direction opposite to the position where the water coating section 62 is provided (the side opposite to the photosensitive material magazine 14 and the receiving material magazine 106). There is. Therefore, the side door 1 of the machine base 12
By opening and moving the heat development transfer section 104 after opening 5A, even when the photosensitive material 16 or the image receiving material 108 is jammed during transport (so-called jam), it can be easily repaired. ing.

Next, the operation of this embodiment will be described. In the image recording apparatus 10 having the above-described structure, after the photosensitive material magazine 14 is set, the nip roller 18 is operated to move the photosensitive material 1
6 is pulled out by the nickel roller 18. When the photosensitive material 16 is pulled out by a predetermined length, the cutter 20 operates,
The photosensitive material 16 is cut into a predetermined length.

After the operation of the cutter 20, the cut photosensitive material 16 is conveyed by the conveying rollers 19, 21, 23, 24 and 26. Transport rollers 19, 21, 23, 24, 2
The photosensitive material 16 conveyed by 6 is inverted and conveyed to the exposure section 22 with its photosensitive (exposure) surface facing upward. When the photosensitive material 16 is nipped by the conveying roller 23, the driving of the conveying roller 23 is temporarily stopped, and the photosensitive material 16 is in a standby state immediately before the exposure unit 22.

Then, the driving of the carrying roller 23 and the carrying roller 24 is started, and the photosensitive material 16 passes through the exposure section 22 at a predetermined speed (for example, 20 mm / sec). At the same time when the photosensitive material 16 is conveyed (passes through the exposure section 22), the exposure device 38 is activated and the photosensitive material 16 located in the exposure section 22 is operated.
Is scanned and exposed to.

After the exposure is started, after the exposed photosensitive material 16 is once sent to the switchback section 40,
It is sent to the water application unit 62 by the reverse rotation of the transport roller 26.

In the water application section 62, the conveyed photosensitive material 1
6 is sent between the guide plate 70 and the coating tank 64 by the drive of the supply roller 66, and is nipped and conveyed by the squeeze roller 68. Here, the coating tank 64 is filled (replenished) with water in the replenishment tank 86 by the drive of the pump 80, and therefore, the photosensitive member sent between the guide plate 70 and the coating tank 64 by the supply roller 66. Water is applied to the material 16, and the squeeze roller 68 removes excess water and passes through the water application section 62.

In this case, since a plurality of rows of ribs 76 are formed on the bottom of the coating tank 64 so as to be inclined with respect to the conveying direction of the photosensitive material 16, the photosensitive material 16 is formed between the guide plate 70 and the coating tank 64. The frictional resistance when passing between the two is reduced, and scratches at certain positions of the photosensitive material 16 are prevented. Furthermore, since the ceramic heater 102 is attached to the guide plate 70 to raise the temperature of the water filled in the coating tank 64 to a predetermined temperature (for example, 40 ± 2 ° C.), the photosensitizer passing through the coating tank 64 is exposed. The permeation amount (infiltration amount) of water into the emulsion surface of the material 16 increases and the saturation amount is surely reached.

The photosensitive material 16 coated with water as an image forming solvent in the water coating section 62 is squeeze roller 6
Then, it is sent to the heat development transfer section 104.

On the other hand, as the scanning exposure of the photosensitive material 16 is started, the image receiving material 108 is also pulled out from the receiving material magazine 106 by the nip roller 110 and conveyed. When the image receiving material 108 is pulled out by a predetermined length, the cutter 112 operates and the image receiving material 108 is cut into a predetermined length.

After the operation of the cutter 112, the cut image receiving material 108 is guided by the guide plate 182 of the image receiving material conveying section 180, and the conveying rollers 190, 186, 114.
Transported by. In this case, after the image receiving material 108 is cut, the nipping by the nipping roller 110 is released, and the deformation and physical property change due to the tip of the image receiving material 108 (image forming surface) being nipped for a long time are prevented.

The leading end of the image receiving material 108 is the conveying roller 11.
When sandwiched by 4, the image receiving material 108 is in a standby state immediately before the heat development transfer section 104.

In the heat development transfer section 104, when it is detected that the photosensitive material 16 has been fed between the outer periphery of the heating drum 116 and the laminating roller 120 by the squeeze roller 68, the conveyance of the image receiving material 108 is restarted. The heating drum 11 is fed to the laminating roller 120.
6 is activated.

In this case, the guide plate 122 is arranged between the laminating roller 120 and the squeeze roller 68 of the water coating section 62, and the photosensitive material 16 sent from the squeeze roller 68 is surely bonded to the laminating roller 120. Be guided to. Further, the laminating roller 120 and the image receiving material 1
The blade guide 12
4 is arranged, and the image receiving material 108 is also reliably guided to the laminating roller 120. Further, the photosensitive material 16 and the image receiving material 108 sent to the laminating roller 120.
Since the back tension acts on the paper, it is fed without wrinkles.

Further, here, the photosensitive material 16 conveyed to the heat development transfer section 104 is wound around the heating drum 116 at a position where the tip portion thereof corresponds to the peeling groove 126, and
The image receiving material 108 is sent between the laminating roller 120 and the heating drum 116 and superposed in a state where the photosensitive material 16 precedes the photosensitive material 16 by a predetermined length (23 mm in this embodiment) in synchronization with the conveyance of the photosensitive material 16.

In this case, the peeling groove 12 of the heating drum 116.
Since 6 is formed to have a width of 3 mm and a depth of 1 mm (or less), in other words, it is set to the minimum necessary size, and therefore the tip of the photosensitive material 16 corresponding to the peeling groove 126 is formed. The air does not enter between the portion and the heating drum 116, and the photosensitive material 16 is closely wound. Further, since the image receiving material 108 is smaller in both widthwise and longitudinal dimensions than the photosensitive material 16, as shown in FIG. 7, the peripheral portion of the photosensitive material 16 is a peripheral portion of the image receiving material 108 on all four sides. Stacked in a state of protruding from.

The photosensitive material 16 and the image receiving material 108, which are superposed by the laminating roller 120, remain in the superposed state, and the heating drum 116 and the endless pressure contact belt 11 are kept.
It is sandwiched between the heating drum 116 and the heating drum 116, and approximately 2/3 of the circumference of the heating drum 116 (between the winding roller 134 and the winding roller 140).
Be transported to. Furthermore, when the photosensitive material 16 and the image receiving material 108 that are superposed are completely settled between the heating drum 116 and the endless pressure contact belt 118, the heating drum 116 temporarily stops its rotation (for example, 5 to 15 seconds),
As a result, the photosensitive material 16 and the image receiving material 108 are heated. When the photosensitive material 16 is heated during the nip and conveyance and when it is stopped, it releases a movable dye, and at the same time, the dye is transferred to the dye fixing layer of the image receiving material 108 to obtain an image.

In this case, of the photosensitive material 16 and the image receiving material 108 sandwiched between the endless pressure contact belt 118 and the heating drum 116, both ends in the width direction of the photosensitive material 16 located outside the heating drum 116 are inward. Since the image receiving material 108 that is positioned is projected and overlapped from both ends in the width direction, the projected portions are in close contact with the outer periphery of the heating drum 116. Therefore, the image receiving material 108 located inside
Will be held so as to be wrapped by the photosensitive material 16 located outside. Therefore, the necessary frictional force is secured and both materials are firmly adhered. Therefore, even if a slight difference in rotation speed occurs between the endless pressure contact belt 118 and the heating drum 116 and a shearing force acts between the two materials, the two materials remain firmly adhered and are displaced. Therefore, a high-quality image having no transfer deviation can be obtained.

Further, the peeling groove 126 is set to the minimum necessary size, and the photosensitive material 16 is brought into close contact with the heating drum 116 between the tip portion of the photosensitive material 16 corresponding to the peeling groove 126 and the heating drum 116. Since it is wrapped around, good quality images can be obtained without causing image unevenness.

Further, since the endless pressure welding belt 118 has conductivity, the heating drum 116 and the endless pressure welding belt 1 are
18 or static electricity due to friction with the photosensitive material 16 or the image receiving material 108 is prevented, and fogging does not occur in an image obtained on the image receiving material 108.

After that, when the photosensitive material 16 and the image receiving material 108 are nipped and conveyed and reach the lower portion of the heating drum 116, the peeling claw 154 is caused by the cam 130 (first engaging portion 130A).
Is moved to enter the peeling groove 126 of the heating drum 116, and the peeling claw 154 engages with the tip of the photosensitive material 16 that is conveyed by a predetermined length before the image receiving material 108, and the tip of the photosensitive material 16 is engaged. Is peeled from the outer periphery of the heating drum 116. Further, the pinch roller 157 presses the photosensitive material 16 by the return movement of the peeling claw 154, and the photosensitive material 16 is wound around the bending guide roller 142 while being pressed by the pinch roller 157, and is moved downward.

In this case, since the bending guide roller 142 is a rubber roller made of silicon rubber, the photosensitive material 1 formed by the bending guide roller 142 and the pinch roller 157 is used.
The clamping force of 6 is larger than the adhesion force between the photosensitive material 16 and the image receiving material 108. Therefore, the photosensitive material 16 is the image receiving material 1.
Image receiving material 1 without moving together with 08 in an adhesive state
It is reliably peeled off from 08, and no clogging (so-called jam) occurs at this portion. Further, the distance between the position where the pinch roller 157 is pressed against the bending guide roller 142 and the position where the bending guide roller 142 is pressed against the heating drum 116 is determined by the non-overlap length (23 mm) between the image receiving material 108 and the tip of the photosensitive material 16. (20 mm) so that when the photosensitive material 16 is nipped by the bending guide roller 142 and the pinch roller 157, the image receiving material 108 still contains the bending guide roller 142 and the heating drum 116. Has not reached the pinching position. Therefore, the bending guide roller 142
The image receiving material 108 is not pulled by the photosensitive material 16 that is wound around and moved downward, and the image receiving material 108 that reaches the bending guide roller 142 after that is reliably conveyed while being wound around the heating drum 116. Therefore,
This also prevents jamming.

The photosensitive material 16 wound around the bending guide roller 142 is conveyed by the photosensitive material discharge rollers 158 and 160 while being guided by the guide roller 162, and is dried by the drying fan 165 at this time to be discarded in the photosensitive material storage box. Integrated in 178.

On the other hand, the heating drum 1 separated from the photosensitive material 16
Image receiving material 108 that moves while being in close contact with
Are sent to the peeling roller 174. When the leading end portion of the image receiving material 108 is nipped by the peeling roller 174 (between the heating drum 116), the cam 130 (the second engaging portion 13) again.
0B) moves the peeling claw 176 to move the image receiving material 10
The image receiving material 108 is peeled from the outer periphery of the heating drum 116 by engaging the peeling claw 176 with the tip portion of 8, and is further moved downward while being wrapped around the peeling roller 174.

In this case, since the peeling roller 174 is a rubber roller made of silicon rubber, the photosensitive material 16 easily enters between the peeling roller 174 and the heating drum 116. Therefore, slack does not occur in the image receiving material 108 between the peeling roller 174 and the bending guide roller 142, and it is possible to prevent a trace due to the image receiving material 108 slackening and coming into contact with the peeling claw 154.

After the tip of the image receiving material 108, which is peeled from the outer periphery of the heating drum 116 by the peeling claw 176 and is moved downward while being wrapped around the peeling roller 174, is reliably sandwiched by the material receiving and discharging roller 172, the cam. 1
The operation of the peeling claw 176 by 30 (the second engaging portion 130B) is released. Further, the image receiving material 108 nipped by the material receiving discharge rollers 172 is nipped and conveyed by the material receiving discharge rollers 172, 173, 175 while being guided by the material receiving guide 170, and at this time, is dried by the drum fan 168 and the ceramic heater 210. While being tray 1
It is discharged to 77.

In this way, the cam 130 (the second engaging portion 13
0B), the operating time of the peeling pawl 176 is set to 3 seconds or more, and after the feeding of the image receiving material 108 is stabilized, the peeling pawl 17 is released.
Since the operation of 6 is released, the peeling claw 176 does not unnecessarily pierce the image receiving material 108, and the occurrence of clogging (so-called jam) is prevented.

In this case, the peeling roller 174, that is, the peeling position of the image receiving material 108 from the heating drum 116 is
Since the bending guide roller 142, that is, the peeling position of the photosensitive material 16 is provided on the downstream side in the transport direction and at a lower position, it occurs when the photosensitive material 16 is separated from the image receiving material 108 and separated from the heating drum 116. The vapor rises as it is and flows toward the wrapping roller 140, and is not separated from the photosensitive material 16 and attached to the image receiving material 108 located below. Therefore, the drying property of the image receiving material 108 is improved.

Therefore, after that, the receiving material discharging roller 17
No trace is left on the image receiving material 108 when it is nipped and conveyed by 2, 173 and 175, and the quality of the image is significantly improved.

Further, each receiving material discharging roller 172, 17
3 and 175 are configured such that the side corresponding to the image forming surface side of the image receiving material 108 is a resin roller,
The image receiving material 108 has a low adhesion (adhesiveness) to the image forming surface and easily separates. Further, the rubber roller is provided on the side opposite to the image forming surface of the image receiving material 108, and the clamping pressure thereof is optimally set (nip force in the range of 100 g to 300 g, respectively).
A conveying force can be applied to the. Therefore, the image receiving material 108 conveyed after the image is formed by the heat development transfer process is coupled with the acceleration of the drying as described above, and at the same time, the image receiving surfaces of the image receiving materials 172, 17 are discharged.
Traces such as 3, 175 are not left, and the image quality is significantly improved.

When carrying out the image recording processing for a plurality of sheets, the above steps are successively carried out.

As described above, in the image recording apparatus 10, the photosensitive material 16 and the image receiving material 108, which are wound around the heating drum 116 and subjected to the heat development transfer processing, first receive the image with the photosensitive material 16 located on the outer side positioned inside. Separated from the material 108 and separated from the heating drum 116,
The image receiving material 108 located inside is peeled off from the heating drum 116.

Here, the heating drum 116 of the photosensitive material 16 is used.
The peeling position from the (image receiving material 108) is the image receiving material 108.
The photosensitive material 1 is provided on the upstream side of the peeling position from the heating drum 116 in the transport direction and at a higher position.
The vapor generated when 6 is separated from the image receiving material 108 and separated from the heating drum 116 rises as it is and flows toward the winding roller 140 side, is separated from the photosensitive material 16 and adheres to the image receiving material 108 located below. Never.
Therefore, the drying property of the image receiving material 108 is improved.

Therefore, when the image receiving material 108 is peeled off from the heating drum 116 and taken out of the apparatus, traces such as a conveying roller are not left on the image receiving material 108, and the image quality is improved.

[0103]

As described above, the image recording apparatus according to the present invention can improve the drying property of the image receiving material on which the image is formed by the heat development transfer, and thus the image can be formed without leaving unnecessary traces. It has the excellent effect of significantly improving the quality of.

[Brief description of drawings]

FIG. 1 is a schematic overall configuration diagram of an image recording apparatus according to an embodiment of the present invention.

FIG. 2 is an external view of an image recording apparatus.

FIG. 3 is an enlarged view of a main part of FIG. 1, showing a discharge / conveyance path of a photosensitive material and an image receiving material.

FIG. 4 is an exploded perspective view showing a coating tank of a water coating section and peripheral components.

FIG. 5 is a water supply system diagram of a water application unit.

FIG. 6 is a perspective view of a heating drum of a heat development transfer section.

FIG. 7 is a plan view showing a superposed state of a photosensitive material and an image receiving material.

FIG. 8 is a partial cross-sectional view of a heating drum and an endless pressure contact belt showing a state in which a photosensitive material and an image receiving material are in close contact with each other.

[Explanation of symbols]

 10 Image Recording Device 16 Photosensitive Material 38 Exposure Device 62 Water Application Section 104 Thermal Development Transfer Section 108 Image Receiving Material 116 Heating Drum 118 Endless Pressure Contact Belt 142 Bending Guide Roller 154 Peeling Claw 157 Pinch Roller 174 Peeling Roller 176 Peeling Claw

Claims (1)

[Claims] 1. A heating drum in which both the image receiving material and the image forming solvent are intimately overlapped with each other after the photosensitive material is image-exposed while the photosensitive material is being conveyed and the image forming solvent is applied to the photosensitive material. After forming the image on the image receiving material by carrying out heat development transfer processing while being wound around and being conveyed by rotation of the heating drum, the photosensitive material is separated from the image receiving material and separated from the heating drum, and further the image receiving material is removed from the heating drum. In an image recording device that performs image recording processing by peeling, the peeling position of the photosensitive material from the heating drum is provided at a position upstream and in the conveying direction from the peeling position of the image receiving material from the heating drum. An image recording device characterized by.