JPH02234160A - Image recording device - Google Patents

Abstract

PURPOSE:To obtain a good image without the generation of an image unevenness (transferring deviation) by superposing both sideways edge parts of an outer side image recording material protruding by more than 4%, and adhering this protruding part to the outer periphery of a drum and crimping and carrying between an endless pressurizing belt and a heating drum. CONSTITUTION:Both of the end parts in the width direction along the axial direction of the drum of the image recording material 16, positioned in the outer side against the drum 116 are superposed protruding more than 4% from both end parts in the width direction along the drum axial direction of an image recording material 108 positioned in the inner side, and further, this protruding part is adhered to the outer periphery of the drum 116. Therefore, the image recording material 108 which is positioned in the inner side is retained so that it is wrapped up by the image recording material 116 positioned in the outer side, crimped between the endless pressurizing belt 118 and the heating drum 116, and both materials 16 and 108 are strongly adhered and not deviated. Thus even when a minute difference is generated between rotating speeds of the endless pressurizing belt 118 and the heating drum 116, a good image without any image unevenness (transferring deviation) can be obtained.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention involves winding two different image recording materials tightly around the outer periphery of a drum as the drum rotates, and supportingly conveying the material between the drum and an endless pressure belt. The present invention relates to an image recording apparatus that performs image recording processing.

[Prior Art] Image recording apparatuses are known that perform image recording processing by wrapping an image recording material around the outer periphery of a drum.

In this type of image recording apparatus, for example, a photosensitive material and an image receiving material are used as image recording materials, and the drum is a heating drum. A portion of the outer periphery of an endless pressure belt wound around a plurality of winding rollers is pressed onto the outer periphery of the heating drum.

The heating drum is connected to a drive source such as a motor and rotates, and the rotation of the heating drum is transmitted by the frictional force between it and the endless pressure belt, causing the endless pressure belt to rotate together with the heating drum. It is supposed to be done.

The photosensitive material on which the image has been exposed is coated with water as an image-forming solvent and then superimposed on the image-receiving material, and in this state is tightly wound around the outer periphery of the heating drum. Further, both materials are supported and conveyed between a heating drum and an endless pressure belt, so that the photosensitive material is thermally developed and the image is transferred to the image receiving material.

[Problems to be Solved by the Invention] By the way, since the endless pressure belt that is pressed against the outer periphery of the heating drum is wound around a plurality of winding rollers having a relatively small diameter (that is, the winding portion of the endless pressure belt has a large curvature rate and is bent at multiple points),
Large resistance to rotational driving force. As a result, the rotational force due to friction between the heating drum and the heating drum is not sufficiently transmitted (part of the rotational force is lost), and a difference in rotational speed may occur between the endless pressure welding belt and the heating drum. Ta.

Therefore, in this case, a shearing force is generated between the photosensitive material and the image-receiving material, which are supported and conveyed by the endless pressure belt and the heating drum, causing the two materials to shift, resulting in image unevenness (transfer misalignment). There was a problem.

In this case, it is extremely difficult to match the rotational speeds of the heating drum and the endless pressure belt.

The present invention takes the above-mentioned facts into account, and even when there is a difference in rotational speed between the drum and the endless pressure belt that presses against a part of the outer periphery of the drum, the photosensitive material wrapped around the outer periphery of the drum or It is an object of the present invention to provide an image recording apparatus capable of supporting and transporting image recording materials such as image receiving materials in a superimposed state to form an image without unevenness (transfer misalignment).

[Means for Solving the Problems] An image recording apparatus according to the present invention includes a drum and an endless pressure belt that presses against a part of the outer periphery of the drum. The image recording apparatus performs image recording processing by tightly wrapping the outer periphery of the image recording material and supportingly conveying it between the endless pressure belt and the image recording material located outside of the drum. The width direction dimension of the material along the drum axis direction is
Formed to be 4% or more longer than the width direction dimension along the drum axis direction of the image recording material located on the inside, and overlapped so as to protrude from both sides in the width direction of the image recording material located on the inside,
Further, the projecting portion of the image recording material located on the outside is brought into close contact with the outer periphery of the drum.

[Function] In the image recording apparatus having the above configuration, both ends in the width direction along the drum axis direction of the image recording material located on the outside with respect to the drum are equal to the width direction ends along the drum axis direction of the image recording material located on the inside. They are overlapped with each other so as to protrude from both ends by 4% or more, and this protruding portion is also brought into close contact with the outer periphery of the drum.

Therefore, the image recording material located on the inside is held so as to be enveloped by the image recording material located on the outside.

Here, if the protruding portion at both ends in the width direction of the outer image recording material is less than 4%, the two materials will shift due to the shearing force acting between them, resulting in image unevenness (transfer misalignment).
occurs.

However, in the present invention, the outer image recording material is overlapped with both ends in the width direction protruding by 4% or more, and in order to bring this protruding part into close contact with the outer periphery of the drum, the rotational speed between the drum and the endless pressure belt is Even if a difference occurs and a shearing force is applied, the two materials supported and conveyed by the endless pressure belt and the heating drum will not shift, and therefore image unevenness (transfer misalignment) will not occur, resulting in a good image quality. An image is obtained.

Embodiment FIG. 1 shows a schematic configuration diagram of an image recording apparatus 10 according to the present invention.

A photosensitive material magazine 14 is arranged on the machine stand 12 of the image recording apparatus 10, and a photosensitive material 16 is wound up into a roll and stored therein.

The photosensitive material magazine l4 can be pulled out toward the front side of the machine stand 12 (toward the front side of the paper in the first drawing, that is, in the width direction of the wound photosensitive material 16), and is pulled out when replacing the magazine. Further, a light shielding member (not shown) is placed in the drawer portion of the photosensitive material magazine 14, so that when the photosensitive material magazine 14 is stored in the machine base 12, external light does not enter into the machine base 12. , the stored photosensitive material 16 is prevented from being inadvertently exposed to light.

As shown in FIG. 2, in this embodiment, the photosensitive material 16
The width direction dimension is 310 mm.

Further, the photosensitive material 16 includes photosensitive silver halide,
It has a binder, a dye-donating substance, and a reducing agent, and is wound up with its light-sensitive (exposed) surface facing downward from the device.

A roller roller 18 and a guillotine type cutter 20 are arranged near the photosensitive material outlet of the photosensitive material magazine 14, and cut the photosensitive material 16 after pulling it out to a predetermined length from the photosensitive material magazine 14. Also,
After the cutter 20 is operated, the nip roller 18 is reversed,
The nipping roller 18 is adapted to rewind the photosensitive material 16 to such an extent that the tip thereof is slightly nipped.

On the other hand, the photosensitive material 16 cut into a predetermined length is transported to the exposure section 2.
2.

A conveyance roller 24 and a conveyance roller 26 are arranged in the exposure section 22, and the space between these conveyance rollers serves as an exposure section (N light spot) through which the photosensitive material 16 passes. Further, a guide plate 28 is disposed between these conveyance rollers, and an exposure surface glass 30 is disposed above the conveyance path of the photosensitive material 16, so that the photosensitive material 16 becomes flat (corrects deformation). (while being exposed) passes between both conveyance rollers (exposure section).

The guide plate 28 and the exposure glass 30 are removable, so that if the transported photosensitive material 16 becomes clogged (so-called jam), it can be easily cleared.

On the side of the exposure section 22 (the side opposite to the photosensitive material magazine 14),
A branch section 32 and an inversion section 34 are arranged.

A flat bar 36 is rotatably arranged at the branching portion 32 . This flat bar 36 enters into the transport path of the bifurcated photosensitive material 16 located on the lower side of the apparatus and can block it, thereby preventing the photosensitive material 16 from passing through the exposure section 22. The material 16 is guided to a conveyance path located above the flapper 36 of the apparatus.

The guided photosensitive material 16 is inverted at a reversing section 34 and then reaches the branching section 32 (flattening bar 36) again. In this case, the flapper 36 is removed from the conveyance path of the photosensitive material 16, so that the photosensitive material 16 after being reversed is conveyed again to the exposure B22 (between the conveyance rollers 24 and 26). It has become. Here, the conveying speed of the photosensitive material 16 by the conveying rollers 24 and 26 (passing speed of the exposure section) is 100 mm/s e
c.

An exposure device 38 is provided directly above the exposure section 22.

The exposure device 38 includes a light source 40, movable mirrors 42A, 42
B1 A plurality of fixed mirrors 44, a reflective mirror 46, and a lens unit 48 are arranged, and a glass original placing plate 50 is provided above the machine stand 12 above these parts.

The light source 40 is a cylindrical halogen lamp (power supply voltage 80V).
, 380W), and in this embodiment, the illuminance on the document surface is approximately 5×105Lx. Also,
The light intensity distribution of this light source 40 (halogen lamp) is set to be slightly smaller at both ends in the axial direction than at the center. This is to make the density distribution of the image uniform in accordance with the temperature distribution of the thermal development transfer section 104, which will be described later.

The lens unit 48 is constituted by a group of a plurality of lenses (for example, six lenses), and further includes a color adjustment filter (CC filter) not shown. Also, the front side of the lens unit 48 (moving mirror 42A,
42B side) at a predetermined interval (in this example, 1
The aperture slit plate 52 is arranged at a distance of 00 mm>.

The light source 40, movable mirrors 42A, 42B, and lens unit 48 are movable along the document placement plate 50, and irradiate light onto the document 54 placed on the document placement plate 50 and reflect the light. The image light (image light) is scanned and exposed onto the photosensitive material 16 located in the exposure section 22 via a plurality of fixed mirrors 44. Note that in this case, the moving speed of the moving mirror 42B is the same as that of the light source 40 and the moving mirror 42A.
The movement speed is 1/2.

The reflecting mirror 46 is arranged so as to be able to enter or leave the optical path of the image light irradiated onto the exposure section 22 via the above-mentioned moving mirror 42A142B or fixed mirror 44. That is, normally, the light that enters the optical path of the image light and is irradiated via the movable mirror 42A 142B or the fixed mirror 44 is reflected in a substantially perpendicular direction. When the photosensitive material 16 located in the exposure section 22 is scanned and exposed, the image is exposed by leaving the path.

When the reflecting mirror 46 enters the optical path of the image light, the reflected light is made to enter the light detection sensor 56.

The photodetection sensor 56 includes a total of six photosensitive heads capable of detecting two types of wavelengths, blue, green, and red, and is further connected to a control device (not shown). This light detection sensor 56 measures the image density of the image on the original 54, and based on this measurement value, the exposure conditions of the aforementioned color adjustment filter (CC filter) and the aperture slit plate 52 are set. .

The exposure section 22 having such a structure is constructed as one unit as a whole and is attached to the machine base 12 so as to be openable by means of a hinge (not shown) (a so-called clamshell type). This allows for easy inspection and so-called jam handling in the event of a paper jam.

A cooling fan 58 is disposed on the side of the exposure section 22 (on the side opposite to the photodetection sensor 56), and the temperature of the exposure section 22 is kept at 4.
It is cooled to 0° C. (preferably 35° C. or lower) and prevents the document surface temperature from increasing.

The side of the conveyance roller 24 of the exposure section 22 (the side of the photosensitive material magazine 14
A flat bar 37 is arranged on the side), and further, an inversion part 60 is arranged below the flat bar 37.

The flattener 37 is used to remove the photosensitive material 16 after passing through the exposure section 22.
is guided to the reversing section 60.

A water application section 62 is arranged below the reversing section 34 on the side of the reversing section 60 (on the side opposite to the photosensitive material magazine 14). The photosensitive material l6 on which the image has been exposed in the exposure section 22 is conveyed to the reversing section 60 by switching the flapper 37 upward, and after being reversed at the reversing section 60, the photosensitive material l6 is transferred to the conveying roller 29.
, 31, 33, and 35, the water is sent to the water application section 62.

As shown in detail in FIG. 5, a coating tank 64 is arranged in the water coating section 62. Further, a pair of supply rollers 66 are provided at the upstream end of the coating tank 64 in the direction in which the photosensitive material 16 is conveyed.
Further, a pair of squeeze rollers 68 are arranged at the downstream end of the photosensitive material 16 in the conveying direction.

In this embodiment, both the supply roller 66 and the squeeze roller 68 are made of silicone rubber rollers with an outer diameter of 20 mm, and the hardness of the rubber is as low as 6.
0±5, and the squeeze roller 68 is 55±5. Further, a pressing force of 1 kg is applied to each roller at both ends in the longitudinal direction.

On the other hand, a guide plate 70 is attached above the coating tank 64 so as to face the coating tank 64, and the space between the guide plate 70 and the coating tank 64 is a passage for the photosensitive material 160. The guide plate 70 is pivotally supported by a hinge 72, and allows the passage of the photosensitive material 16 to be opened and closed.
．． It also makes it easier to handle paper jams and clean the tank.

Further, a sensitive material sensor 74 is disposed near the supply roller 66 on the upstream side in the conveying direction of the photosensitive material 16.
It is possible to detect the photosensitive material 16 conveyed from. Therefore, when the sensitive material sensor 74 detects the photosensitive material 16 conveyed from the reversing section 60, the supply roller 66 and the squeeze roller 68 are driven, and thereby the photosensitive material 16 is transferred between the guide plate 70 and the coating tank 64. The image is then fed into the space between the images, and is then held and conveyed by the squeeze roller 68. ing.

Note that here, the supply roller 66 and the squeeze roller 68
The transport speed of the photosensitive material 16 (the speed of passage between the guide plate 70 and the coating tank 64) is 2Q mm/sec. That is, in the exposure section 22, the photosensitive material 16
is transported at 100 mm/secC, but the sensitive material sensor 74
When detecting the photosensitive material l6, the conveying speed of the conveying rollers 29, 31, 33, and 35 is also increased to 2Qmm by clutch operation.
/sec and is fed into the water application section 62.

As shown in FIGS. 6(A) and 6(B), a plurality of rows of ribs 76 are provided on the surfaces of the coating tank 64 and the guide plate 70 through which the photosensitive material 16 passes, and are inclined with respect to the conveying direction of the photosensitive material 16. This reduces the frictional resistance when the photosensitive material 16 passes between the guide plate 70 and the coating tank 64, and prevents the photosensitive material 16 from being scratched at certain positions. .

In this coating tank 64, a supply vibrator 78 is provided which extends approximately at the center of the passage of the photosensitive material 16 and below the squeeze roller 68.
The bifurcated tip portions 78A and 78B are connected to each other. A pump 80 and a filter 82 are disposed in the middle of the supply pipe 78, and the other end of the supply pipe 78 is supported by an open lid 84 and located in a replenishment tank 86.

Further, the replenishment tank 86 is filled with water as an image forming solvent and also contains an antifoaming agent. Therefore, by driving the pump 80, the replenishment tank 86
The coating tank 64 can be filled (replenished) with the water inside.

Therefore, when the coating tank 64 is filled with water, the water is applied to the photosensitive material 16 fed between the guide plate 70 and the coating tank 64 by the supply roller 66, and is further supported by the squeeze roller 68. Excess water is removed by being transported.

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 the photosensitive material 16 passing through water) is 7Qmm, and the water immersion time is 3Qmm. It is 5 seconds. Further, the photosensitive material 16 after the water coating process (that is, after passing through the squeeze roller 68) has a coating of 15±Igr/m' (maximum 17gr/m).
2 or less) is applied.

An open lid 84 supporting the supply pipe 78 is attached to the machine base 12 by a hinge 88, so that the inside of the replenishment tank 86 can be opened. Further, the tip of the supply vibrator 78 located inside the replenishment tank 86 is formed with a narrow diameter to prevent liquid from running out when the open lid 84 is opened.

A water tank section 90 is arranged above the replenishment tank 86, and a filter 92 is further arranged in the water tank section 90. This water tank section 90 includes an overflow vibe 9 whose one end is connected to the application tank 64 on the side of the squeeze roller 68.
The other ends of 4 are connected. For this reason, the application tank 64
When the amount of water filled (refilled) exceeds the specified amount,
This water can be automatically returned to the replenishment tank 86 (water tank section 9()) via an overflow vibe 94.

Further, a discharge pipe 96 whose one end is connected to the middle part of the supply vibrator 78 (between the application tank 64 and the pump 80) is connected to this water tank part 90, and the other end of the discharge pipe 96 is connected to the middle part of the discharge pipe 96. A solenoid valve 98 is arranged in the section. This solenoid valve 98 is normally in a closed state, but
By opening the tank 86 (water tank section 90), water in the coating tank 64 is refilled through the discharge pipe 96.
It is now possible to discharge to.

A bypass pipe 100 is attached to the water tank 90 to prevent water from overflowing from the water tank 90 when the filter 92 becomes clogged.

A heater 102 is attached to the outer periphery of the bottom of the coating tank 64, and the water filled in the coating tank 64 is
The temperature is raised to 2°C. For this reason, the amount of water permeating (infiltrating) the emulsion surface of the photosensitive material 16 passing through the coating tank 64 increases, making it easier to reach saturation.

A thermal development transfer section 104 is disposed on the side of the water application section 62, and the water application section 104 (after passing through the squeeze roller 68)
A photosensitive material 16 is fed.

On the other hand, a receiving material magazine 106 is arranged on the machine stand l2 directly below the photosensitive material magazine 14, and an image receiving material 108 is wound up into a roll and stored therein.

The receiving material magazine 106 can also be pulled out toward the front side of the machine stand 12 (toward the front side of the paper in the first drawing, that is, in the width direction of the wound image receiving material 108).

As shown in FIG. 2, the widthwise dimension of the image-receiving material 1080 is 4% or more smaller than the photosensitive material 16, and is 297 mm in this embodiment. Further, a dye fixing material containing a mordant is applied to the image forming surface of the image receiving material 108.

Near the receiving material outlet of this receiving material magazine 106,
Nip roller 110 and guillotine type cutter 1
12 is arranged to cut the image receiving material 108 pulled out from the receiving material magazine 106 into a length shorter than the photosensitive material 16. Further, after the cutter 1120 is operated, the nip of the nip roller 110 is released, and the tip of the image receiving material 108 is nipped by the nip roller 110 for a long time, so that the surface (image forming surface) is not deformed.

The image receiving material 108 cut into a predetermined length is conveyed to the thermal development transfer section 104 by a plurality of conveyance rollers 114.

The thermal development transfer section 104 is composed of a heating drum 116 and an endless press-contact pelt 118, and furthermore, a bonding roller 120 as a winding means is arranged on the outer periphery of the heating drum 116 on the water application section 62 side.

A guide plate 122 is disposed above the conveyance path of the photosensitive material 16 between the bonding roller 120 and the squeeze roller 68 of the water application section 62.
The guide plate 122 is guided to the bonding roller 120 in correspondence with the back side (the side opposite to the image forming side) of the photosensitive material 16 sent from the photosensitive material 16. , the friction with the photosensitive material 16 after water application is reduced.

On the other hand, a blade guide 124 is disposed between the bonding roller 120 and the conveyance roller 114 for the image-receiving material 108, and the image-receiving material 108 is conveyed from the conveyance roller 114.
8, it is guided to the bonding roller 120. The surface of the blade guide 124 is treated with Teflon (or a Teflon tape is attached) to improve the sliding of the image receiving material 108 and prevent it from being scratched.

Here, the squeeze roller 120 is moved so that the relative angle between the photosensitive material 16 and the image receiving material 108 fed to the bonding roller 120 is 30 degrees or more (preferably 45 degrees or more).
8, the conveyance roller 114, and other parts are set.

In addition, with respect to the conveyance speed of the photosensitive material 16 and image receiving material 108 by the bonding roller 12,
The conveyance speed of photosensitive material 16 and image receiving material 108 is set to be about 2% slower.
Pack tension is applied to the sheet when it is fed to the bonding roller 120. Note that a one-way clutch (not shown) is attached to the drive shafts of the squeeze roller 68 and the conveyance roller 114 to maintain a predetermined tension.

The bonding roller 120 has an outer diameter of 2 at the center in the axial direction.
A 9mm so-called crown roller with 3mm of meat grass on the outer circumference.
It is coated with silicone rubber, and its rubber hardness is said to be approximately 80. Moreover, this bonding roller 120 has a weight of 15 kg at both ends in the longitudinal force direction.
is applied to the outer periphery of the heating drum 116.

As shown in FIG. 4, a felt wiping cloth 121 is placed above the bonding roller 120. The wiping cloth 121 is wrapped and fixed around the mounting plate 123, and is always in contact with the surface of the bonding roller l20.

Therefore, as the bonding roller 120 rotates, water adhering to the surface of the bonding roller 120 can be removed.

The heating drum 116 is made of a thin-walled aluminum pipe, and in this embodiment has a wall thickness of 2 mm and an outer diameter of 1 mm.
55rnm and an effective width in the axial direction of 350mrrx. The surface of the heating drum 116 is coated with Teflon, and the inner peripheral surface is coated with heat-resistant black paint.

As shown in FIG. 4, on a part of the outer circumference of the heating drum 116,
A plurality of substantially rectangular lateral grooves 126 whose longitudinal direction is the axial direction of the heating drum 116 are formed on the same line, so as to partially release the pressure contact between the outer periphery of the heating drum 116 and the bonding roller 120. ing. That is, as a result of the release of the pressure contact by the horizontal grooves 126, the water that remains in a bead shape between the bonding roller 120 and the heating drum 116 adheres to the surface of the heating drum 116 or the bonding roller 120 due to its surface tension. It is supposed to move.

Further, on the downstream side of the lateral groove 126 in the rotational direction of the heating drum, a plurality of substantially rectangular vertical grooves 128 whose longitudinal direction is the circumferential direction of the heating drum 116 (that is, in a direction orthogonal to the lateral groove 126) are formed. Peeling claws 1, which will be described later, are formed at intervals.
Corresponding to 54, it is used for peeling off the photosensitive material 16. In this embodiment, the vertical groove 128 has a width dimension of 5 mm,
'Longitudinal dimension is 25mm and depth dimension is 0.2mm
is formed.

The photosensitive material 16 to be conveyed to the thermal development transfer section 104 is fed between the bonding roller 120 and the heating drum 116 so that its leading edge is located at the center in the longitudinal direction of the vertical groove 128. Reference numeral 108 synchronizes with the conveyance of the photosensitive material 16, and the photosensitive material 16 is fed a predetermined length (20 mm in this embodiment) between the bonding roller 120 and the heating drum 116, and is superimposed. ing. In this case, since the image-receiving material 108 is smaller in width and length than the photosensitive material 16 (in particular, the width is 4% or more smaller), FIGS. As shown in FIG. 2, the peripheral portions of the photosensitive material 16 are overlapped with each other with all four sides protruding from the peripheral portion of the image receiving material 108.

Furthermore, a cam 130 is fixed to the side wall of the heating drum 116. This cam 130 is capable of engaging with an operating arm 146, which will be described later, and rotates the operating arm 146 as the heating drum 116 rotates.

A pair of halogen lamps 1 are installed inside the heating drum 116.
32A and 132B are arranged. halogen lamp 1
32A and 132B have outputs of 800W and 400W, respectively, and heat the surface of the heating drum 116 to approximately 78°C.
The temperature can be raised to . In this case, the two /% halogen lamps 132A and 132B are used together at the start of temperature rise, and only the 800W halogen lamp 132A is used during subsequent normal operation.

An endless pressure belt 11 that presses against the outer periphery of the heating drum 116
Reference numeral 8 has a structure in which a woven cloth material is covered with rubber, and in this embodiment, the width direction dimension is 34 Qmm. The woven material is made of aromatic polyamide fibers (e.g., Kevlar or Nomex: both du Pont
The belt is sewn with heat-resistant fibers such as A.D. Co., Ltd.'s registered trademark), and monofilament fibers are used in the width direction of the belt to improve the rigidity in the belt width direction. Further, the covering rubber is silicone rubber containing carbon and has electrical conductivity.

This endless pressure belt 118 is wrapped around four rollers 1
It is wrapped around 34, 136, 138, 140,
The endless outer side between the winding roller 134 and the winding roller 140 is pressed against the outer periphery of the heating drum 116.

In this case, as shown in FIG. 3, the endless pressure belt 118 supports the photosensitive material 16 and the image receiving material 108 with the heating drum 116, and both ends of the photosensitive material 16 in the width direction located outside the heating drum 116 are , the image-receiving material 108 located inside is overlapped with a projection of 4% or more from both ends in the width direction, so that the projection portion is brought into close contact with the outer periphery of the heating drum 116.

Therefore, the image-receiving material 108 located on the inside is held so as to be enveloped by the photosensitive material 16 located on the outside, and both materials are tightly adhered and do not shift.

The winding rollers 134, 136, and 138 are made of aluminum, and flanges for preventing the belt from shifting are formed at both ends in the axial direction.

Further, the winding roller 136 has two ends at each end in the longitudinal force direction. 5kg (practical range is 0,5 kg)
~3.0 kg) is applied in the direction away from the heating drum 116, thereby causing the endless pressure welding belt 11
8 is maintained at a predetermined tension.

On the other hand, the winding roller 140 is a rubber roller, and a gear 192 is fixed to its rotating shaft 190 as shown in FIG. This gear 192 meshes with a gear 196 fixed to a motor 194 as a driving source. Therefore, the driving force of the motor 194 is directly transmitted via the gears 192 and 196 to rotate the winding roller 140.

When the winding roller 140 is rotated by the motor 194, the endless pressure welding belt 118 that is wound around the winding roller 140 is rotated, and accordingly, the rotational force of the endless pressure welding belt 118 is transferred to the heating drum 116. The frictional force between them is transmitted to the heating drum 116, and the heating drum 116 is driven to rotate.

In this case, the endless pressure belt 118 wraps around the roller 14.
Since it is directly and forcibly rotated by 0, the bending ratio of the wrapped portion is large, and even if it is bent at a plurality of places, it will surely rotate at a predetermined speed.

Furthermore, since the heating drum 116 has low resistance to rotational driving force, the rotational force is reliably transmitted from the endless pressure belt 118 by frictional force (a part of the rotational force is not lost), and the system Therefore, there is no difference in rotational speed between the endless pressure belt 118 and the heating drum 116.

Furthermore, when the heating drum 116 rotates, a bonding roller 120 disposed in pressure contact with the outer periphery of the heating drum 116 similarly rotates together due to frictional force.

The photosensitive material 16 and the image-receiving material 108 which have been superimposed by the bonding roller 120 are passed around approximately 1/2 of the circumference of the heating drum 116 ( The photographic image is conveyed while being held between the winding roller 134 and the winding roller 140). When the photosensitive material 16 is heated during this supported conveyance, it releases a mobile dye, and at the same time, this dye is transferred to the dye fixed layer of the image-receiving material 108 to obtain an image.

In this case, since the endless pressure belt 118 is electrically conductive, generation of static electricity due to friction between the heating drum 116 and the endless pressure belt l18, the photosensitive material 16, or the image receiving material 108 is prevented.

As shown in FIGS. 9 and 10, a bending guide roller 142 is disposed below the heating drum 116 on the downstream side of the endless pressure belt 118 in the material supply direction. Bending guide roller 1
42 has a shaft 144 connected to a driving source (not shown), and is rotated by this driving force. Further, the bending guide roller 142 is in pressure contact with the outer periphery of the heating drum 116, so that the photosensitive material 16 or the image receiving material 108 conveyed by the heating drum 116 and the endless pressure belt 1l8 is further supported and conveyed. .

An operating arm 146 is fixed to a shaft 148 at the lower part of the heating drum 116 on the downstream side of the bending guide roller 142 in the material supply direction, and this shaft 148 is further rotatably supported.

As shown in detail in FIG. 8, an engagement roller 150 is rotatably attached to the tip of the operating arm 146.
It can engage with a cam 130 fixed to the side wall of the heating drum 116. The shaft 148 also has a torsion spring 1.
52 are connected to each other, and due to this, the shaft 148, that is, the actuating arm 146 always moves in the direction in which the engagement roller 150 approaches the bending guide roller 142 (the eight directions of arrows in FIG. 8).
is being energized.

In other words, when the heating drum 116 rotates and the cam 130 reaches a predetermined position, the engagement roller 150 comes into contact with the cam 130 and presses the operating arm 146, so that the heating drum 1
As the heating drum 116 rotates, the engagement roller 150 rotates in the direction of arrow B in FIG. It rotates and returns to its original position.

A peeling claw 154 is rotatably supported by a shaft 156 between the shaft 148 of the operating arm 146 and the heating drum 116 (at the lower part of the heating drum 116 on the downstream side of the bending guide roller 142 in the material supply direction).

A peeling part 158 having a wedge-shaped cross section is formed at the upper end of the peeling claw 154 (on the opposite side from the shaft 156), and a concave guide part 160 that curves gently downward is formed from the peeling part 158. ing.

The peeling portion 158 corresponds to the vertical groove 128 formed on the outer periphery of the heating drum 116, and can be fitted into or removed from the vertical groove 128. In addition, in this embodiment, the thickness dimension (claw width dimension) of the peeling claw 154 (peeling part 158) is 3.
It is formed in mm.

On the other hand, a tension spring 162 is connected to the downstream end of the peeling claw 154. For this reason, the peeling claw 154 is
The peeling portion 158 is always urged in the direction of fitting into the vertical groove 128 (in the direction of arrow C in FIG. 8). Note that in this case, the biasing force of the tension spring 162 is weaker than the biasing force of the torsion spring 152 that biases the actuation arm 146.

A guide hole 164 is formed in the center of the peeling claw 154, into which a bottle 166 is movably fitted.

The pin 166 is connected to the shaft 1 that pivotally supports the aforementioned operating arm 146.
48 by an arm 168,
It is adapted to move around an axis 148 as the actuation arm 146 rotates.

This bin 166 is normally moved by the peeling claw 1 by the biasing force of a torsion spring 152 connected to the operating arm 146.
54 at the front end (separation part 158 side) of the guide hole 164, thereby holding the peeling claw 154 so that the peeling part 158 is separated from the outer periphery of the heating drum 116. When the actuating arm 146 is pressed by the cam 130 and rotates in the direction of arrow B in FIG. 8 against the biasing force of the torsion spring 152, the rear end of the guide hole 164 (in the direction of the axis 148) , thereby gradually releasing the holding of the peeling claw 154. Peeling claw 154
The peeling portion 15 is pulled by the urging force of the tension spring 162.
8 into the longitudinal groove 128 on the outer periphery of the heating drum 116 (in the direction of arrow C in FIG. 8).

In this case, the cam 130 is fixed so that when the heating drum 116 rotates to a predetermined position and the vertical groove 128 reaches the peeling position, the peeling claw 154 rotates and the peeling part 158 enters the vertical groove 128. The position and dimensions of each part such as the operating arm 146 and the guide hole 164 are set.

When the peeling portion 158 enters into the vertical groove 128, the peeling claw 154 separates the endless pressure belt 118 and the heating drum 11 from each other.
The photosensitive material 16 and the image receiving material 10 are supported and conveyed between the photosensitive material 16 and the image receiving material 10
8, it is adapted to engage only the leading end of the photosensitive material 16 stacked a predetermined length ahead of each other, and to separate this leading end from the outer periphery of the heating drum 116. Furthermore, the peeled photosensitive material 1.6 is guided by a guide section 160.

In this case, when the peeling part 158 of the peeling claw 154 enters into the vertical groove 128, the peeling part 158 is located inside the outer peripheral surface of the heating drum, that is, between the photosensitive material 16 and the heating drum 118.
Since it is located inside the contact surface of the heating drum 116, the photosensitive material 16 does not get between the peeling part 158 and the heating drum 116, and the photosensitive material 16 can be reliably peeled off from the outer periphery of the heating drum 116. It has become.

A moving roller 170 is arranged near the peeling claw 154 side. The moving roller 170 is connected to the shaft 148 via a leaf spring 172, and can rotate together with the shaft 148, that is, the operating arm 146.

The movable roller 170 normally comes into contact with the bending guide roller 142 and presses it slightly due to the biasing force of the leaf spring 172, but as the actuating arm 146 rotates in the direction of arrow B in FIG. It is configured to move in a direction away from the bending guide roller 142. Therefore, in this case, the photosensitive material 16 is peeled off from the outer periphery of the heating drum 116 by the peeling portion 158 of the peeling claw 154, and is removed from the movement locus of the photosensitive material 16 guided by the guide portion 160, thereby allowing the photosensitive material 16 to move. On the other hand, when the actuating arm 146 overcomes the cam 130 and rotates in the direction of arrow A in FIG. 8, it moves in a direction approaching the bending guide roller 142. Therefore, in this case, the photosensitive material 16 that is peeled from the outer periphery of the heating drum 116 by the peeling part 158 of the peeling claw 154 and guided by the guide part 160 is pressed by the moving roller 170 and guided in a bending manner, and is guided by the bending guide roller 142. It is designed to be wrapped around.

On the other hand, near the heating drum 116 above the peeling claw 154,
A peeling roller 174 and a peeling claw 176 are arranged to peel off the image receiving material 108, which is separated from the photosensitive material 16 and moves together with the heating drum 116, from the outer periphery of the heating drum 116.

The thermal development transfer section 104 configured as described above is constructed as one unit as a whole, and is directed in the direction opposite to the position of the water application section 62 with respect to the machine base 12 (the photosensitive material magazine 1
4 and the side opposite to the receiving material magazine 106). Therefore, even if the photosensitive material 16 or the image-receiving material 108 becomes clogged (so-called jam) during transportation, it can be easily repaired.

Further, the thermal development transfer section 104 is covered with a heat insulating material, and a thin aluminum plate is attached to the inner peripheral surface thereof. For this reason, the halogen lamp 132A,
This makes it easier to raise the temperature of the heating drum 116 by the heating drum 132B, and prevents heat transfer to other parts.

A waste photosensitive material storage box 178 is arranged below the thermal development transfer section 104 (separation claw 154), and a cutter 180 is arranged at the entrance of the waste photosensitive material storage box 178. The photosensitive material 16 peeled off from the outer periphery of the heating drum 116 and separated from the image receiving material 108 is transferred to this cutter 1.
The waste photosensitive material storage box 17 is cut into pieces by 80.
8.

Further, a drying fan 182 is arranged near the thermal development transfer section 104 (peeling roller 174), and
Air is blown onto the image receiving material 108 after it has been separated from the image receiving material 6 to dry it.

The image receiving material 108 peeled off from the outer periphery of the heating drum 116 by the peeling claw 176 is collected on a tray 184. In this case, the tray 184 is
The image receiving material 108 can be guided and accumulated in a direction perpendicular to the direction of conveyance by the heating drum 116.

Next, the operation of this embodiment will be explained.

The photosensitive material 16 pulled out from the photosensitive material magazine 14 by the nip roller 18 is cut into a predetermined length by the cutter 20 and then conveyed to the exposure section 22. Further, after cutting, the nip roller 18 is reversely rotated, and the pulled out photosensitive material 16 is rewound into the photosensitive material magazine 14. Therefore, the leading end of the photosensitive material 16 is not wasted and is not exposed inadvertently.

The cut photosensitive material 16 is conveyed by a conveyance roller 24 and a conveyance roller 26 and once passes through an exposure section 22,
It reaches a branching part 32. Here, the flapper 36 enters and blocks the transport path of the bifurcated photosensitive material 16 located below the apparatus, thereby transferring the photosensitive material 16 above the apparatus of the flapper 36. Guide to the transport route located on the side.

Further, the guided photosensitive material 16 is wiped by the reversing section 34 and inverted so that its photosensitive (N light) surface faces upward, and then conveyed from the branching section 32 (flapper 36) to the exposure section 22 again.

When the photosensitive material 16 is nipped by the conveying roller 26, the driving of the conveying roller 26 is temporarily stopped, and the photosensitive material 1
6 is in a standby state immediately before the exposure section 22.

On the other hand, while the photosensitive material 16 is being conveyed, a pre-scan of the original 54 is performed.

That is, first, the light source 40 is activated, and the reflection mirror 46 enters the optical path of the image light irradiated to the exposure section 22, and the light irradiated via the movable mirrors 42A, 42B and the fixed mirror 44. is reflected in an approximately perpendicular direction. The reflected light is incident on the light detection sensor 56 and detected, thereby determining the image density of the image on the original 5-4 (in other words, whether the image on the original 54 is like a printed original or a photographic original). ) is measured, and based on this measurement value, the color adjustment filter (CC filter) and the aperture slit plate 52
The exposure conditions are set.

Next, the reflection mirror 46 leaves the optical path of the image light, and the light source 40, moving mirror 42A142B, and lens unit 48 return to the home position (image scanning start position).

Here, the driving of the conveyance roller 24 and the conveyance roller 26 is started again, and the photosensitive material 16 has an exposure area 22 of 1 0 0
It passes at a speed of mm/sec. In this case, since the guide plate 28 and the exposure surface glass 30 are arranged in the exposure section 22, the photosensitive material 16 passes between both transport rollers (the exposure section) in a flat shape (while the deformation is corrected). .

At the same time as this photosensitive material 16 is transported (passing through the N light section 22), the light source 40, movable mirrors 42A, 42B, and lens unit 48 move along the original plate 50 and are placed on the original plate 50. The reflected image (image light) is transmitted to the exposure unit 2 via a plurality of fixed mirrors 44.
The photosensitive material 16 located at 2 is scanned and exposed.

In this case, since the exposure section 22 is forcibly cooled by the cooling fan 58, exposure failures due to temperature rise will not occur.

When the exposure starts, that is, the driving of the conveying rollers 24 and 26 is resumed, the flapper 37 is switched upward, and the exposed photosensitive material 16 is thereby conveyed to the reversing section 60 one after another. Further, the photosensitive material 16 is reversed by the reversing section 60 (that is, the image-exposed surface is directed downward) and then sent to the water application section 62 by the conveying rollers 29, 31, 33, and 35.

In the water application section 62, when the photosensitive material 16 conveyed from the reversing section 60 is detected by the sensitive material sensor 74, the conveyance speed of the conveyance rollers 29, 31, 33, and 35 is reduced, and the supply roller 66 and squeeze roller 68 is driven, whereby the photosensitive materials 1 and 6 are fed between the guide plate 70 and the coating tank 64, and the squeeze roller 6 is further driven.
8. Here, the application tank 64 is filled (replenished) with water in the replenishment tank 86 by driving the pump 80, so that the supply roller 66
Water is applied to the photosensitive material 16 fed between the guide plate 70 and the coating tank 64, and the photosensitive material 16 passes through the water application section 62 while excess water is removed by the squeeze roller 68.

In this case, the bottom of the coating tank 64 and the guide plate 7
A plurality of rows of ribs 76 are formed on the lower surface of the photosensitive material 16 at an angle with respect to the conveyance direction of the photosensitive material 16.
The frictional resistance when the photosensitive material 16 passes between the guide plate 70 and the coating tank 64 is reduced, and the photosensitive material 16 is prevented from being scratched at a certain position.

Furthermore, a heater 10 is provided on the bottom outer periphery of the coating tank 64.
2 is attached to raise the temperature of the water filled in the coating tank 64 to 35±2°C. amount) increases and definitely reaches the saturation amount.

The photosensitive material 16 coated with water as an image forming solvent in the water coating section 62 is sent to the thermal development transfer section 104 by a squeeze roller 68 .

On the other hand, the image receiving material 108 is also pulled out from the receiving material magazine 106 by the nip roller 110, cut into a predetermined length by the cutter 112, and then conveyed by the conveying roller 114 and sent to the thermal development transfer section 104. Also,
After cutting, the nip by the nip rollers 110 is released, and deformation of the leading end (image forming surface) of the image receiving material 108 due to being nipped for a long time is prevented.

In the thermal development transfer section 104 , the photosensitive material 16 and the image-receiving material 108 are fed between the outer periphery of the heating drum 116 and the bonding roller 120 .

In this case, the bonding roller 120 and the water application section 62
A guide plate 70 is disposed between the squeeze roller 68 and the photosensitive material 1 sent from the squeeze roller 68.
6 is reliably guided to the bonding roller 120. Further, a blade guide 124 is completely disposed between the bonding roller 120 and the conveying roller 114 for the image receiving material 108, so that the image receiving material 108 is also securely transferred to the bonding roller 120.
You will be guided to. Further, since back tension is applied to the photosensitive material 16 and the image receiving material 108 that are fed to the bonding roller 120, the photosensitive material 16 and the image receiving material 108 are fed without wrinkles.

Furthermore, here, the photosensitive material 16 conveyed to the thermal development transfer section 104 is placed between the bonding roller 120 and the heating drum 116 such that its leading end is located in the center of the vertical groove 128 formed in the heating drum 116. sent in between, and
The image-receiving material 108 is transferred to the bonding roller 120 and the heating drum 116 in synchronization with the conveyance of the photosensitive material 16, with the photosensitive material 16 leading by a predetermined length (20 mm in this embodiment).
It is sent between the two and overlapped.

Furthermore, in this case, the image-receiving material 108 has smaller width and longitudinal dimensions than the photosensitive material 16 (
In particular, since the widthwise dimension is smaller by 4% or more), the peripheral part of the photosensitive material 16 is overlapped with all four sides protruding from the peripheral part of the image-receiving material 108, as shown in FIG.

Further, here, a horizontal groove 126 is formed on the outer periphery of the heating drum 116 so that the heating drum 116 and the bonding roller 120 can be connected to each other.
Since the pressure contact with the photosensitive material 16 and the image receiving material 108 is partially released, unnecessary adhesion of water to the photosensitive material 16 and the image receiving material 108 is prevented.

That is, for example, when image forming processing is performed continuously using the heating drum 116, water adhering to the back surface of the photosensitive material 16 is overlapped by the bonding roller 120 and squeezed out, as shown in FIG. 11(A). As shown, it remains in a bead shape between the bonding roller 120 and the heating drum 116. Therefore, unnecessary water adheres to the image-receiving material 108 that has subsequently entered the image-receiving material 108, causing deformation and unevenness. However, by forming the lateral groove 126 on the outer periphery of the heating drum 116, when the lateral groove 126 faces the bonding roller 120, the heating drum 116 and the bonding roller 120 are pressed against each other as shown in FIG. 11(B). As a result, some of the water that had been staying in a bead shape moves to the heating drum 116 and the other part to the bonding roller 120 due to its surface tension. Therefore, as the heating drum 116 and the bonding roller 120 rotate, natural evaporation occurs and the wiping cloth 1
It is wiped off and removed by 21.

Therefore, unnecessary water retention is eliminated before the photosensitive material 16 and the image receiving material 108 enter, and unnecessary water does not adhere to the image receiving material 108 that subsequently enters, thereby preventing deformation and unevenness. .

The photosensitive material 16 and the image-receiving material 108 which have been overlapped by the bonding roller 120 are sandwiched between the heating drum 116 and the endless pressure belt 118 while remaining in the overlapping state, and the photosensitive material 16 and the image-receiving material 108 are overlapped with each other by the heating drum 116 and the endless pressure belt 118. between the wrapping roller 134 and the wrapping roller 140).

When the photosensitive material 16 is heated during this supported conveyance,
A mobile dye is released and at the same time this dye is transferred to the image receiving material 10.
The image is transferred to the dye fixing layer No. 8 to obtain an image.

In this case, the endless pressure belt 118 is directly driven and rotated by the winding roller 140 connected to the motor 194, so that it reliably rotates at a predetermined speed. Furthermore, since the heating drum 116 has low resistance to rotational driving force and is in pressure contact with the endless pressure belt 118 over a wide range,
The rotational force is reliably transmitted from the endless pressure belt 118 by the frictional force (a portion of the rotational force is transmitted without being lost). Therefore, there is no difference in rotational speed between the endless pressure belt 118 and the heating drum 116.

Therefore, the photosensitive material 16 and the image receiving material 108 supported and conveyed by the endless pressure belt 118 and the heating drum 116
There is no shearing force generated between the two materials that causes the two materials to shift, and image unevenness (transfer misalignment) does not occur, making it possible to obtain a good image.

Further, as shown in FIG. 3, among the photosensitive material 16 and the image receiving material 108 supported by the endless pressure belt 118 and the heating drum 116, both ends in the width direction of the photosensitive material 16 located on the outside with respect to the heating drum 116 are , the image-receiving material 108 located on the inner side protrudes by 4% or more from both ends in the width direction and is overlapped with the heating drum 1.
It is closely attached to the outer periphery of 16. Therefore, the image-receiving material 108 located on the inside is held so as to be surrounded by the photosensitive material 16 located on the outside.

Here, as shown in FIG. 12, as the protruding portions at both ends in the width direction of the photosensitive material 16 become larger, the frictional force also increases. Furthermore, through experiments conducted by the present inventor, the photosensitive material 16 and the image receiving material 1
It has been found that in order to keep the image transfer deviation between 08 and 08 within the permissible range, this frictional force needs to be approximately 1.5 kg or more. In this case, if the protruding portions at both ends of the photosensitive material 16 in the width direction are less than 4%, when a large shearing force is applied between the photosensitive material 16 and the image receiving material 108, the two materials will shift, resulting in an image Unevenness (transfer misalignment) occurs.

However, in this embodiment, both ends of the photosensitive material 16 in the width direction protrude by 4% or more from both ends of the image receiving material 108 in the width direction, so the necessary frictional force is ensured and the two materials are tightly adhered. . For this reason, if the endless pressure welding belt 1
Even if a slight difference in rotational speed occurs between the heating drum 18 and the heating drum 116 and a shearing force is applied between the two materials, the two materials remain firmly attached and do not shift.
Therefore, a high-quality image without transfer deviation can be obtained.

Furthermore, since the endless press-contact belt 118 is electrically conductive, generation of static electricity due to friction between the heating drum 116 and the endless press-contact belt 118 or the photosensitive material 16 or the image-receiving material 108 is prevented, and the generation of static electricity is prevented from occurring on the image-receiving material 108. There is no fogging in the image.

Here, while the photosensitive material 16 and the image-receiving material 108 are supported and conveyed (that is, during the heat transfer process), the pin 166 fitted into the guide hole 164 of the peeling claw 154 is rotated by the screw connected to the shaft 148. It is located at the front end (separation part 158 side) of the guide hole 164 by the biasing force of the spring 152, thereby holding the peeling claw 154 and separating the peeling part 158 from the outer periphery of the heating drum 116. (state shown in FIG. 9).

Thereafter, when the photosensitive material 16 and the image-receiving material 108 are supported and conveyed and reach the lower part of the heating drum 116, the image-receiving material 108
The peeling part 158 of the peeling claw 154 engages with the tip of the photosensitive material 16 that is conveyed a predetermined length ahead of the photosensitive material 1 .
6 is peeled off from the outer periphery of the heating drum 116.

That is, when the heating drum 116 rotates and the cam 130 reaches a predetermined position, the engagement roller 15 of the actuation arm 146
0 is pressed against the cam 130, and the heating drum 116
It rotates in the direction of arrow B in FIG. 8 along with the rotation of .

Along with this, the pin 166 is inserted into the guide hole 16 of the peeling claw 154.
4 to the rear end (in the direction of the axis 148), the holding of the peeling claw 154 is gradually released, and the peeling claw 1
54 is a direction in which the peeling portion 158 approaches the outer periphery of the heating drum 116 due to the urging force of the tension spring 162 (the eighth direction).
(in the direction of arrow C in the figure), and the peeling portion 158 enters into the vertical groove 128.

Further, as the operating arm 146 rotates, the moving roller 170 rotates and separates from the bending guide roller 142 (as shown in FIG. 10).

When the peeling part 158 of the peeling claw 154 is inserted into the vertical a 128, the photosensitive material 16 and the image-receiving material 1,08, which are supported and conveyed between the endless pressure belt 118 and the heating drum 116, are in a predetermined length ahead of each other. photosensitive material 16 overlaid with
The heating drum 116 engages only the tip of the heating drum 116.
Peel it off from the outer periphery. Furthermore, the peeled photosensitive material 1
6 is guided by a guide section 160.

In this case, when the peeling part 158 of the peeling claw 154 enters into the vertical groove 128, the peeling part 158 is located inside the outer peripheral surface of the heating drum, that is, between the photosensitive material 16 and the heating drum 118.
Since the photosensitive material 16 is located inside the contact surface of the heating drum 116, the photosensitive material 16 does not get between the peeling section 158 and the heating drum 116, and the photosensitive material 16 can be reliably peeled off from the outer periphery of the heating drum 116.

Further, in this case, the moving roller 170 is the bending guide roller 14
2, the peeling portion 158 of the peeling claw 154
The guide portion 1 is peeled off from the outer periphery of the heating drum 116 by
It is separated from the movement locus of the photosensitive material 16 guided by the guide 60, and does not prevent the movement of the photosensitive material 16.

When the heating drum 116 further rotates and the engagement roller 150 passes over the cam 130, the actuating arm 146 is rotated in the eight direction of the arrow in FIG. 8 by the biasing force of the torsion spring 152 and returns to its original position.

Therefore, the bottle 166 moves against the urging force of the tension spring 162 to the front end of the peeling claw 1540 guide hole 164 (the peeling part 158 side), thereby moving the peeling claw 154 as shown in the arrow in FIG. The peeling portion 158 is rotated in the D direction to separate from the vertical groove 128 and is held apart from the outer periphery of the heating drum 116.

Furthermore, at the same time, as the actuating arm 146 rotates, the moving roller 170 moves in a direction approaching the bending guide roller 142. Therefore, the peeling portion 1 of the peeling claw 154
The photosensitive material 16 peeled off from the outer periphery of the heating drum 116 by 58 and guided by the guide section 160 is pressed by the moving roller 170 and guided in a bending manner, and wound around the bending guide roller 142 .

The photosensitive material 16 bent downward by the moving roller 170 and wrapped around the bending guide roller 142 is supported and conveyed downward by the bending guide roller 142 and the moving roller 170.

Further, this photosensitive material 16 is cut into pieces by a cutter 180 and accumulated in a waste photosensitive material storage box 178.

On the other hand, the image receiving material 108, which is separated from the photosensitive material 16 and moves while remaining in close contact with the heating drum 116, moves through between the heating drum 116 and the peeling claw 176 which is spaced apart from the outer periphery of the heating drum 116. , and sent to a peeling roller 174.

Further, here, the tray 1 is peeled off from the outer periphery of the heating drum 116 by the peeling roller 174 and the peeling claw 176.
84.

In this way, in this embodiment, the endless pressure belt 118
and a heating drum 116.
Of the image-receiving materials 108, both ends of the photosensitive material 160 in the width direction located on the outside with respect to the heating drum 116 are overlapped with each other so as to protrude by 4% or more from both ends of the image-receiving material 108 in the width direction located inside. of the heating drum 116. Since it is closely attached to the outer periphery, the image-receiving material 108 located on the inside is held in a way that it is wrapped by the photosensitive material 16 located on the outside, and the image material is firmly adhered and does not shift. Therefore, even if there is a slight difference in rotational speed between the endless pressure belt 118 and the heating drum 116, a high-quality image without image unevenness (transfer misalignment) can be obtained.

In this embodiment, the endless pressure belt 118 is connected to the winding roller 14 which is supplied with the rotational driving force of the motor 194.
Furthermore, this endless pressure belt 11
Although the heating drum 116 is configured to be passively rotated by the rotational force of the heating drum 116 being transmitted by the frictional force between the heating drum 116 and the heating drum 116, the present invention is not limited to this.
94 may be applied to rotate the heating drum 116, and furthermore, the rotational force of the heating drum 116 may be transmitted by frictional force to cause the endless pressure belt 118 to rotate in a driven manner.

Further, in this embodiment, the photosensitive material 16 and the image receiving material 108 are used as image recording materials, and the photosensitive material 16 is conveyed so as to be positioned outside the image receiving material 108, but the present invention is not limited to this. It is applicable even when the photosensitive material 16 is transported while being located inside, and further,
In addition to these materials, other sheet-like image recording materials can also be used.

[Effects of the Invention] As explained above, the image recording apparatus according to the present invention can maintain the speed of the drum even when there is a rotational speed difference between the drum and the endless pressure belt that presses against a part of the outer circumference of the drum. It has the effect that image recording materials such as photosensitive materials or image-receiving materials wound around the outer periphery can be supported and conveyed in a superimposed state to form an image without unevenness (transfer misalignment).

[Brief explanation of drawings]

FIG. 1 is a schematic configuration diagram of an image recording apparatus according to an embodiment of the present invention, FIG. 2 is a plan view showing the overlapping state of a photosensitive material and an image receiving material, and FIG. 3 is a plan view showing the state of contact between the photosensitive material and the image receiving material. FIG. 4 is a perspective view of the heating drum according to the embodiment of the present invention, FIG. 5 is a configuration diagram of the water application section according to the embodiment of the present invention, and FIG. (A)
is a back view of the guide plate according to the embodiment of the present invention, FIG.
) is a cross-sectional view of the guide plate, FIG. 7 is a perspective view showing the winding roller and its peripheral parts according to an embodiment of the present invention, and FIG.
The figure is a perspective view showing the peeling claw and its peripheral parts, Figures 9 and 10 are side views showing the operating state of the peeling claw, and Figures 11 (A) and 11 (B) are the heating drum and the attached parts. Schematic side view showing the state of water remaining between the matching rollers, 1st
FIG. 2 is a diagram showing the relationship between the widthwise dimension ratio of the photosensitive material and the image-receiving material and the frictional force. DESCRIPTION OF SYMBOLS 10... Image recording device, 16... Photosensitive material, 104... Thermal development transfer part, 108... Image receiving material, 116... Heating drum, 118... Endless pressure contact belt.

Claims (1)

[Claims] (1) A drum, and an endless press-contact belt that presses against a part of the outer circumference of the drum, and two different image recording materials are tightly wound around the outer circumference of the drum as it rotates, and the endless press-contact belt is attached to the drum. An image recording apparatus that performs surface image recording processing by being conveyed between the drums, wherein the width direction dimension along the drum axis direction of the surface image recording material located on the outside with respect to the drum among the image recording materials, It is formed to be 4% or more longer than the width direction dimension along the drum axis direction of the image recording material located on the inside, and is overlapped so as to protrude from both sides in the width direction of the surface image recording material located on the inside, and on the outside thereof. An image recording apparatus characterized in that a protruding portion of the image recording material is brought into close contact with the outer periphery of the drum.