JPH06148857A - Image recorder - Google Patents

Abstract

PURPOSE:To obtain an image recorder capable of hot only ventilating a device and always maintaining it in constant conditions, but also preventing the entering of dust in simple structure. CONSTITUTION:An ventilation fan 330 is arranged in the vicinity of a heating drum 116 and moreover, an air blower 332 is arranged in the vicinity of a photosensitive material magazine 14 and an image receiving magazine 106, as well. The quantity of air supplied by the air blower 332 is set larger than that discharged by the ventilating fan 330. Therefore, a pressurizing (positive pressure) state is always obtained in a main body 12 and the dust is prevented from entering from the gap of the machine body 12. Therefore, the dust is never stuck to the image forming surfaces of the photosensitive material 16 and the image receiving material 108, so that an excellent image is formed and the dust never causes a failure in the operation of the device.

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 two kinds of image recording materials.

[0002]

2. Description of the Related Art An image recording apparatus for performing image recording processing using two kinds of image recording materials, for example, a photosensitive material and an image receiving material is known.

In this type of image recording apparatus, the light-sensitive material and the image-receiving material are housed in rolls each wound in a magazine whose inside is shielded from light, and are sequentially withdrawn each time image recording processing is performed. used. Further, the image recording apparatus is provided with a heating drum and an endless pressure contact belt which is in pressure contact with the outer circumference of the heating drum and rotates together with the heating drum.

The photosensitive material, which is drawn out from the magazine by a predetermined size, cut and exposed with an image, is superposed on the image receiving material after being coated with water as an image forming solvent, and in this state, is brought into close contact with the outer periphery of the heating drum. Wrapped around. Further, both materials are sandwiched and conveyed between the heating drum and the endless pressure contact belt so that the photosensitive material is thermally developed and 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, an exhaust fan is arranged in the vicinity of the heating drum to constantly ventilate the inside of the apparatus body.
As a result, the inside of the machine is cooled to prevent the temperature from being affected by the heating drum and the like, and constant temperature conditions are always maintained to prevent defective exposure and deterioration of the photosensitive material, so that a good image can be obtained. .

However, in the conventional ventilation with such an exhaust fan, there is a problem that dust is sucked into the inside together with air from the gap of the machine wall of the apparatus as the outside air is sucked. Therefore, dust adheres to the image forming surface of the light-sensitive material or the image receiving material to hinder good image formation, or causes malfunction of the apparatus.

[0007] In this case, it is extremely difficult to completely fill the gaps in the machine wall of the apparatus body or to dispose dust filters or the like in all the gaps to prevent dust from entering.

In consideration of the above facts, the present invention can provide an image recording apparatus which is capable of ventilating the inside of the apparatus and always maintaining a constant temperature condition, and having a simple structure to prevent dust from entering. Is the purpose.

[0009]

An image recording apparatus according to the present invention uses two types of image recording materials housed in different magazines, and one image recording material is imagewise exposed and then closely contacted with the other image recording material. In an image recording apparatus for performing image recording processing by superposing them on top of each other, it is arranged in the vicinity of an exhaust means for exhausting air inside the apparatus body and a magazine for accommodating the two types of image recording materials, and removes dust-free outside air from the apparatus machine. And an air blower configured to feed the air into the body and set the amount of air fed to be larger than that of the exhaust unit.

[0010]

In the image recording apparatus having the above structure, the outside air, which has been dust-removed by the blowing means, is fed into the body of the apparatus. here,
Since the amount of air supplied by the air blowing unit is set to be larger than the amount of air discharged by the exhaust unit, the inside of the apparatus body is in a pressurized (positive pressure) state. Therefore, dust is not sucked together with air from the gap of the machine wall of the machine body and does not enter the inside. In other words, the outside air is not sucked from the gap of the machine body wall of the apparatus body, and the dusted outside air is always fed into the apparatus body only by the air blowing means.

Therefore, dust does not adhere to the image forming surface of the light-sensitive material or the image receiving material, a good image is formed, and the malfunction of the apparatus does not occur.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1 shows a schematic block diagram of an image recording apparatus 10 according to the present invention. 2 and 3 are overall external views of the image recording apparatus 10.

The image recording apparatus 10 is constructed as a box as a whole, and the machine base 12 is provided with front doors 13A, 13B, side doors 15A, 15B and a lower door 17. The inside of the machine base 12 can be exposed by opening each door. 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, 310 mm. The light-sensitive material 16 has light-sensitive silver halide, a binder, a dye-donor substance, and a reducing agent on a support, and the light-sensitive (exposure) surface of the light-sensitive material 16 is wound downward.

As shown in detail in FIGS. 4 and 5, the photosensitive material magazine 14 is fixed to the body portion 14A having a length corresponding to the widthwise dimension of the photosensitive material 16 and both end portions of the body portion 14A. It is composed of a pair of side frame parts 14B and is housed in a housing part 200 provided in the machine base 12. A guide plate 202 for holding a magazine is arranged in the storage section 200. A pair of leaf springs 204 for pressing and holding the photosensitive material magazine 14 are attached to the guide plate 202. In addition, a protrusion 206 is provided on one end of the guide plate 202.
Is formed, and is adapted to enter the through hole 208 of the housing portion 200. A nail latch 210 is attached to an end portion of the guide plate 202 opposite to the protrusion 206, and can be fitted into a locking hole 212 formed in a side wall of the housing portion 200. When the sensitive material magazine 14 is set in the accommodating portion 200 with the projection 206 entering the through hole 208 and the nail latch 210 fitted in the locking hole 212, the leaf spring 204 presses the sensitive material magazine 14 and Magazine 14
Is held by the accommodation unit 200. In addition, the nail latch 210 is pulled out from the locking hole 212 to guide the guide plate 20.
By removing 2, the photosensitive material magazine 14 is moved to the right side of the paper of FIG. 1, that is, slightly moved in the longitudinal direction of the wound photosensitive material 16, and then the front side of the machine base 12 (front side of the paper of FIG. 1, that is, wound up). It is possible to pull out in the width direction of the photosensitive material 16, and when the photosensitive material 16 is jammed or the like.

Further, the photosensitive material magazine 1 of the accommodating portion 200
An inner door 214 is arranged in the drawer portion of No. 4, and in the state where the photosensitive material magazine 14 is accommodated in the accommodation unit 200, the accommodation unit is opened even when the front doors 13A and 13B of the machine base 12 are opened. External light does not enter the inside of 200, and the contained photosensitive material 16 is prevented from being inadvertently exposed to light.

Further, the accommodating portion 200 of the photosensitive material magazine 14
Is provided with an optical sensor (not shown), which can detect either the sensitive material magazine 14 or the receiving material magazine 106 having a different length dimension described later, thereby preventing erroneous insertion. There is.

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 guillotine type cutter including a fixed blade and a movable blade, and has a configuration in which the movable blade is moved up and down by a rotating cam or the like to engage the fixed blade and cut the photosensitive material 16. Here, FIG. 6 shows a schematic configuration diagram of a drive system for driving the cutter 20 (moving blade). That is, the drive shaft 220 of the cutter 20 is connected to the timing belt 22.
The gear 226 is connected to the gear 224 via the gear 2, and a gear 226 that rotates integrally with the gear 224 meshes with the gear 228. The gear 228 is coaxially connected to the gear 230 via two one-way clutches having a rotation characteristic of a forward rotation transmission characteristic and a rotation characteristic of a reverse rotation transmission characteristic, and further, a gear of the cutter motor via a timing belt 232. It is connected to the rotating shaft 234. by this,
The drive force is transmitted only when the rotary shaft 234 of the cutter motor is normally rotated, the drive shaft 220 is rotated, and the cutter 20 is operated. Further, a cutter 112 for cutting the image receiving material 108, which will be described in detail later, is connected to the gear 228 provided through the two one-way clutches, whereby a single cutter motor is used for the photosensitive material 1.
It is a configuration capable of cutting both 6 and the image receiving material 108.

After the operation of the cutter 20, the nickel roller 1
8 is reversed, 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, 29, 31, 33, 3 are provided on the side of the cutter 20.
5 and the guide plate 27 are arranged so that the photosensitive material 16 cut into a predetermined length can be conveyed to the exposure unit 22. Here, the plurality of transport rollers 19, 21, 2
3, 24, 26, 29, 31, 33, 35 and the guide plate 27 are arranged so as to circulate around the photosensitive material magazine 14, whereby the photosensitive material 16 after cutting is
Conveyor rollers 19, 21, 23, 24, 26, 29, 3
While being guided by the 1, 33, 35 and the guide plate 27, it is configured to move along a transport path (a "-shaped" transport path in a side view) that circulates around the photosensitive material magazine 14 in which it is housed. .

An exposure unit 22 is arranged at a position directly above the photosensitive material magazine 14 on the way of the conveying path of the photosensitive material 16.
The exposure section 22 is located between the transport rollers 24 and 26, and the photosensitive material 16 passes through as an exposure section (exposure point) between these transport rollers. Further, a guide plate 28 is arranged between these conveying rollers, and an exposure surface glass 30 is arranged above the conveying path of the photosensitive material 16, whereby the photosensitive material 16 becomes flat (deformation is corrected). (While being exposed), it passes between both transport rollers (exposure section). The transport speed of the photosensitive material 16 by the transport rollers 24 and 26 (passing speed of the exposure unit) is, for example, 100 mm / se.
It is c.

The guide plate 28 and the exposure surface glass 30 serve as a mechanism for separating when the shell of the exposure unit 22 described later is opened, and the photosensitive material 16 being conveyed is clogged (so-called jam).
If this happens, this can be easily resolved.

An exposure device 38 is provided directly above the exposure unit 22. A light source 40, a moving mirror 42A, a moving mirror 42B, a fixed mirror 44, a reflecting mirror 46, and a lens unit 48 are arranged in the exposure device 38, and further, above these parts, above the machine base 12 made of glass. A document placing plate 50 is provided.

The light source 40 is a cylindrical halogen lamp (for example, power supply voltage 80V, 380W), and has an illuminance of about 5 × 10 ⁵ Lx on the document surface, for example. The light amount distribution of the light source 40 (halogen lamp) is set to be slightly smaller at both ends in the axial direction than in the central part. This is to make the density distribution of the image uniform in correspondence with the temperature distribution of the heat development transfer unit 104 described later.

A plurality of lens units 48 (for example, 6
The lens group is made up of (sheets), and a color adjustment filter (CC filter) (not shown) is further incorporated. A movable diaphragm slit plate 52 is disposed on the rear side (fixed mirror 44) of the lens unit 48.

These light source 40, moving mirrors 42A, 4 and
2B and the lens unit 48 are movable along the original plate 50 by the amount of movement associated with the magnification change, and the original 54 placed on the original plate 50 is irradiated with light and its reflected image light ( The image light) is scanned and exposed through the fixed mirror 44 onto the photosensitive material 16 located in the exposure section 22. In this case, the moving speed of the moving mirror 42B depends on the light source 40.
It is 1/2 of the moving speed of the moving mirror 42A.

The reflecting mirror 46 is the moving mirror 42 described above.
It is arranged so that it can enter or leave the optical path of the image light irradiated to the exposure unit 22 via the A, 42B and the fixed mirror 44. That is, normally, the moving mirrors 42A, 42B and the fixed mirror 4 are in a state of entering the optical path of the image light.
The light radiated via 4 is reflected in a substantially right-angled direction. On the other hand, when scanning and exposing the image of the document 54 onto the photosensitive material 16 located in the exposure section 22, the light is separated from the optical path. So that the image can be exposed. When the reflection mirror 46 enters the optical path of the image light, the reflected light is incident on the light detection sensor 56.

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

The exposure unit 22 having such a configuration is configured as one unit as a whole and is releasably attached to the machine base 12 by a hinge 58 (so-called clam shell type, see FIG. 3). Therefore, by opening the exposure unit 22, it is possible to easily perform an internal inspection and a so-called jam treatment when a paper jam occurs.

The "no" of the photosensitive material 16 which is formed around the photosensitive material magazine 14 and passes under the photosensitive material magazine 14.
A water application unit 62 is arranged at the end of the character-shaped transport path. The photosensitive material 16 on which the image is exposed in the exposure section 22 is
After being circulated around the photosensitive material magazine 14 by the "-" shaped conveying path, it is conveyed by the conveying rollers 29, 31, 33, 35 and guided by the guide plate 27 to be fed to the water coating section 62. Here, the transport roller 35
A dust removing sheet is attached to the guide plate 36 on the side of (in front of the water applying portion 62) to remove dust adhering to the photosensitive material 16.

As shown in detail in FIG. 7, 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 are 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, for example, 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. Further, a predetermined pressing force (for example, 1 kg) is applied to both ends of each roller in the longitudinal direction.

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
Water is applied to the photosensitive material 16 sent between the guide plate 70 and the application tank 64 by 6 and is further sandwiched and conveyed by the squeeze roller 68, whereby excess water is removed.

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, 70 mm. The immersion time is, for example, 3.5 seconds. Further, the photosensitive material 16 after the water coating treatment (that is, after passing through the squeeze roller 68) has 15 ± 1 gr / m 2.
² water is to be applied.

A photosensitive material sensor 74 is arranged near the upstream side of the supply roller 66 in the conveying direction of the photosensitive material 16 and can detect the photosensitive material 16 conveyed from the reversing section 60. As a result, the driving speeds of the supply roller 66 and the squeeze roller 68 are changed when the photosensitive material sensor 74 detects the photosensitive material 16 conveyed from the reversing unit 60. Therefore, the photosensitive material 16 is fed between the guide plate 70 and the coating tank 64 at a low transport speed, and is further sandwiched and transported by the squeeze roller 68.

As shown in FIG. 7, a plurality of rows of ribs 76 are formed on the bottom surface of the coating tank 64, that is, the surface on which the photosensitive material 16 passes, inclining with respect to the conveying direction of the photosensitive material 16. It is possible to reduce the frictional resistance when passing between the guide plate 70 and the coating tank 64 and prevent the photosensitive material 16 from being scratched at a certain position. In addition, the squeeze roller 6 is provided in the coating tank 64.
Drainage port 90 communicating with the housing part of No. 8 and overflow tank 9
An overflow port 94 and an auxiliary overflow port 95, which communicate with 2, are formed.

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 configuration are constructed as one unit as a whole.

Here, FIG. 8 shows a schematic configuration diagram of a drive system for driving the supply roller 66 and the squeeze roller 68. That is, the rotation shaft 2 of the supply roller 66
Reference numeral 40 is connected to a gear 244 via a timing belt 242, and the gear 244 is coaxially connected to a gear 246 via a one-way clutch.
The gear 246 meshes with the rotating shaft 248 of the water application motor. As a result, when the rotation shaft 248 of the water application motor rotates, the driving force is transmitted, the rotation shaft 240 rotates, and the supply roller 66 rotates. Further, the rotation shaft 250 of the squeeze roller 68 meshes with the gear 244 provided via the one-way clutch, and the driving force is transmitted to rotate the squeeze roller 68 as well as the supply roller 66. Therefore, the squeeze roller 68
The photosensitive material 16 nipped and conveyed by is maintained at a predetermined tension.

Further, a shaft 254 of a receiving material discharging roller 172 and a shaft 256 of a sensitive material discharging roller 158, which will be described later, are connected to a gear 244 provided via the one-way clutch, via a timing belt 252. The drive force is transmitted to rotate. Furthermore, the gear 258 meshing with the shaft 256 is
Similarly, it is connected to a shaft 262 of a sensitive material discharge roller 160, which will be described later, via 60, and is rotated by receiving a driving force. That is, the water application motor has a plurality of drive units (supply roller 66 and squeeze roller 68,
The receiving material discharging roller 172, the sensitive material discharging roller 158, and the sensitive material discharging roller 160) are both driven.

The feeding speed of the photosensitive material 16 by the supply roller 66 and the squeeze roller 68 (passing speed between the guide plate 70 and the coating tank 64) is, for example, about 20 m.
It is m / sec. That is, in the exposure unit 22, the photosensitive material 16 is, for example, 100 mm / se as described above.
Although the sheet is conveyed by c, when the photosensitive material sensor 74 detects the photosensitive material 16, the conveying speed of the conveying rollers 29, 31, 33, 35 is also reduced to about 20 mm / sec and sent to the water coating section 62.

A plurality of pipes are connected to the water application section 62 configured as described above so that water can be supplied. Here, FIG. 9 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 is provided with an open lid 84.
And is located in the replenishment tank 86. The replenishment 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) in 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 in a closed state, but when in an open state, the water in the coating tank 64 can be discharged to the replenishment tank 86 via the discharge pipe 96. 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. Further, one end of the overflow port 94 of the coating tank 64 is an intermediate portion of the drainage pipe 96 (the solenoid valve 9
8 and the replenishment tank 86) connected to the discharge pipe 1
The other end of 00 is connected. Further, the 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.

The open lid 84 that supports 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. Also, FIG.
As shown in detail in FIG. 0, a water amount sensor 81 is attached to a tip end portion of the supply pipe 78 located in the refill tank 86 by a bracket 79 while holding the base end portion and the tip end portion thereof. The water amount sensor 81 is a self-heating type thermistor and can detect the amount of water in the refill tank 86 by generating heat according to the amount of water. It goes without saying that the water amount sensor 81 may be a sensor of other structure such as a float type.

On the side of the water coating 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 immediately below 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 that of the photosensitive material 16 (for example, 297 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, the body portion 106A and a pair of side frame portions 106B fixed to both ends of the body portion 106A,
It can be drawn out to the front side of the machine base 12 (the front side of the drawing in FIG. 1, that is, the width direction of the wound image receiving material 108). Here, the body portion 106A of the material receiving magazine 106 is formed to have a length corresponding to the widthwise dimension of the image receiving material 108, and thus is formed shorter than the body portion 14A of the photosensitive material magazine 14. For this reason, the lengths of the photosensitive material magazine 14 and the receiving material magazine 106 are different.

An optical sensor (not shown) is arranged in the receiving portion of the receiving material magazine 106 to detect either one of the photosensitive material magazine 14 and the receiving material magazine 106 having different lengths. This prevents erroneous insertion.

A nipping roller 110 is arranged in the vicinity of the image receiving material take-out port of the receiving material magazine 106 so that the image receiving material 108 can be pulled out from the receiving material magazine 106 and the nip thereof can be released. Here, FIG. 11 shows a schematic configuration diagram of the nip roller 110 portion, and FIG. 12 shows a schematic configuration diagram of a drive system for driving the nip roller 110. That is, the upper roller 110A of the nip roller 110 is supported by the tip of the L-shaped bracket 272 that is rotatably supported by the shaft 270, and can move up and down together with the bracket 272. A tension spring 274 is connected to the bracket 272 so that the upper roller 110A is always connected to the lower roller 110B.
It is pressed against to apply a predetermined nip pressure. A nip releasing cam 276 is arranged above the upper roller 110A and can be engaged with the upper wall of the bracket 272. The nip releasing cam 276 has a role of pressing the upper wall of the bracket 272 by rotating and rotating the bracket 272 around the shaft 270 against the biasing force of the tension spring 274, whereby the upper roller 110 is rotated.
A is configured to be separated from the lower roller 110B. The rotating shaft 278 of the nip releasing cam 276 is coaxially connected to the gear 280 via a one-way clutch, and the gear 280 has a gear 282 and a lower roller 110B.
The timing belt 286 is wound around the rotary shaft 284. The gear 282 is coaxially connected to the gear 288, and the gear 288 meshes with the rotation shaft 290 of the paper feeding motor. As a result, when the rotation shaft 290 of the paper feeding motor rotates forward, the lower roller 110
When the driving force is transmitted only to B and the nip roller 110 (upper roller 110A, lower roller 110B) operates, while the rotation shaft 290 of the sheet feeding motor rotates in the reverse direction,
The driving force is transmitted to the nip releasing cam 276, the nip releasing cam 276 rotates, and the bracket 272 moves to the upper roller 11.
It is configured to move away from the lower roller 110B together with 0A. The upper roller 110A moves to move the nip roller 11
By releasing the nip of 0, the tip of the image receiving material 108 is prevented from being nipped for a long time to deform the surface (image forming surface) and change the physical properties.

A one-way clutch may be provided on the rotating shaft of the lower roller 110B. In this case, it is possible to prevent unnecessary rotation of the lower roller 110B when releasing the nip (when rotating the nip releasing cam 276).

A cutter 11 is provided on the side of the Nipro roller 110.
2 are arranged. The cutter 112 is, for example, a guillotine type cutter including a fixed blade and a movable blade, similar to the above-described photosensitive material cutter 20, 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. Here, as shown in FIG. 6 described above, a gear 236 is meshed with a gear 228 provided through two one-way clutches, and a gear 237 that rotates integrally with this gear 236 is cut via a timing belt 238. It is connected to the drive shaft 239 of 112. As a result, the drive force is transmitted only when the rotary shaft 234 of the cutter motor is reversely rotated, the drive shaft 239 is rotated, and the cutter 112 is operated. That is, not only the photosensitive material 16 but also the cutter 112 for cutting the image receiving material 108 can be operated by a single cutter motor.

The image receiving material 108 cut into a predetermined length is
The image receiving material conveying section 180 guides and conveys the image receiving material to the heat development transfer section 104. Here, FIG.
14 shows a sectional view of an image receiving material conveying section 180 which conveys the cut image receiving material 108 to the heat development transfer section 104. FIG. 14 is a perspective view of the image receiving material conveying section 180 corresponding to FIG. The figure is shown.

In the image receiving material conveying section 180, an upper conveying guide plate 182 and a lower conveying guide plate 184 are arranged. The upper conveyance guide plate 182 is a fixed plate, and further, a conveyance roller 186 is arranged. This upper conveyance guide plate 1
Reference numeral 82 denotes the image receiving material 1 drawn from the receiving material magazine 106.
08 corresponds to the image forming surface. Upper transport guide plate 18
2 includes a plurality of ribs 1 along the conveying direction of the image receiving material 108.
88 is formed, and Teflon processing is further applied,
Friction with the image receiving material 108 is reduced to improve sliding and prevent scratches. Not limited to the Teflon process, the surface may be embossed to form irregularities or a Teflon tape may be attached to reduce friction with the image receiving material 108.

On the other hand, the lower conveyance guide plate 184 is rotatably supported by a shaft 185, and the upper conveyance guide plate 18 is rotatably supported.
It is possible to approach and separate from 2. That is, the lower conveyance guide plate 184
Has a so-called downward opening mechanism, and the lower conveyance guide plate 18
When 4 is in the state of approaching the upper conveyance guide plate 182, the conveyance path of the image receiving material 108 is between the upper conveyance guide plate 182 and the lower conveyance guide plate 184. A guide roller 190 corresponding to the transport roller 186 is attached to the lower transport guide plate 184. As with the upper conveyance guide plate 182, the lower conveyance guide plate 184 also has
A plurality of ribs 192 are formed along the conveyance direction of the image receiving material 108. A tension spring 194 is housed inside the lower conveyance guide plate 184. One end of the tension spring 194 is locked to the shaft 185, and a wire 196 is connected to the other end of the tension spring 194. The middle portion of the wire 196 is wound around a roller 198 attached to the tip of the lower conveyance guide plate 184, and the other end of the wire 196 is fixed to the machine base 12. As a result, the lower conveyance guide plate 1
84 is constantly urged in a direction approaching the upper conveyance guide plate 182, and the lower conveyance guide plate 184 is operated by the downward movement against the urging force of the tension spring 194.
It is a structure that can move around 85. Lower transport guide plate 18
When 4 rotates downward and separates from the upper conveyance guide plate 182, the conveyance path of the image receiving material 108 is exposed, and for example, the jam treatment of the image receiving material 108 can be easily performed.

A thermal development transfer section 104 is arranged beside the image receiving material transport section 180. As shown in FIG. 15, the heat development transfer section 104 includes a heating drum 116 and the endless pressure contact belt 1.
And a water application part 62.
The laminating roller 120 is provided on the outer circumference of the heating drum 116 on the side.
Are arranged.

The laminating roller 120 and the water application section 6
A guide plate 122 is arranged between the second squeeze roller 68 and the conveying 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
Guides to 0. The guide plate 122 has an uneven surface formed by embossing, which reduces friction with the photosensitive material 16 after water application and prevents sticking. The guide plate 122 is coated with Teflon to prevent unevenness of the tip of the photosensitive material 16.

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 also reaches between the transport roller 114 of No. 08 and guides the image receiving material 108 sent from the transport roller 114 to the bonding roller 120 in correspondence with the image receiving material 108. 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, 29 mm at the central portion in the axial direction, the outer peripheral surface of which is coated with silicone rubber (thickness of 3 mm), and the rubber hardness is approximately 80. Has been done. Further, the bonding roller 120 is pressed against the outer periphery of the heating drum 116 by applying a predetermined pressing force (for example, 15 kg) at both ends in the longitudinal direction. The laminating roller 120 is connected to a drum motor via a drive system to be described later, and the driving force of the drum motor is transmitted to rotate the laminating roller 120. Here, 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 slightly (eg, about 2%) slower than the conveying speed of the photosensitive material 16 and the image receiving material 108 by the laminating roller 120. Are set so that the photosensitive material 16 and the image receiving material 108 are
When the sheet is fed to the bonding roller 120, the back tension acts.

The heating drum 116 is made of a thin-walled aluminum pipe. In this embodiment, the heating drum 116 has a thickness of 3 mm.
mm, outer diameter 156 mm, and axial effective width 350 mm. The surface of the heating drum 116 is coated with Teflon, and the inner peripheral surface is coated with heat-resistant black.

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 bonding roller 120 and the heating drum 116 in a state of being preceded by a predetermined length (20 mm in this embodiment) so as to be superposed. In this case, the image receiving material 10
8 is smaller than the photosensitive material 16 in both the width direction and the longitudinal direction.
The peripheral portion of the image receiving material 108 has a structure in which all four sides are overlapped with each other while protruding from the peripheral portion of the image receiving material 108.

Further, a cam 130 is fixedly attached to the side wall of the heating drum 116. The cam 130 can be engaged with a peeling claw 176 described later, and the peeling claw 176 is rotated as the heating drum 116 rotates. The cam 130 is also 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 is, for example, 350
The outputs are W and 350 W, and the surface of the heating drum 116 can be heated (for example, about 78 ° 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 340 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 rubber for coating is a silicon rubber containing carbon and has conductivity.

The endless pressure contact belt 118 is wound around four winding rollers 134, 136, 138 and 140. The winding roller 134 and the winding roller 1
The endless outer side between 40 and 40 is pressed against the outer periphery of the heating drum 116.

In this case, as shown in FIG. 16 and FIG.
The endless pressure contact belt 118 is composed of the photosensitive material 16 and the image receiving material 10.
8 is sandwiched by the heating drum 116, and both ends in the width direction of the photosensitive material 16 located outside the heating drum 116 are projected and overlapped from both ends in the width direction of the image receiving material 108 located inside. This projecting portion is brought into 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, so that the two materials are prevented from firmly adhering to each other.

The winding rollers 134, 136, 138 are made of aluminum. Further, the winding roller 136 is formed in a tapered shape in which both axial end portions thereof are expanded outward, and a pressing force of 0.6 kg (practical range: 0.3 to 1.7 kg) is applied to both longitudinal end portions thereof. Is added in a 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 a drum motor via a drive system described later so that the driving force of the drum motor is transmitted to rotate the winding roller 140. It has become. When the winding roller 140 is rotated, the endless pressure contact belt 118 wound around the winding roller 140.
Is rotated, and with this, the endless pressure welding belt 118 is rotated.
Is transmitted to the heating drum 116 by frictional force with the heating drum 116, and the heating drum 116 is driven to rotate.

Here, the winding roller 140 is shown in FIG.
A schematic configuration diagram of a drive system for driving the is shown. That is, the rotation shaft 300 of the winding roller 140
Meshes with the gear 302, and the gear 30
Reference numeral 2 is connected to a gear 306 via a timing belt 304. A gear 308 that rotates integrally with the gear 306
The drive shaft 310 of the drum motor meshes with the. Thus, when the drive shaft 310 of the drum motor rotates, the driving force is transmitted, the rotation shaft 300 rotates, and the winding roller 140 rotates. Further, the timing belt 304 has the gears 312, 314, 316, 3 and 3.
It is wrapped around each of the 18. The gear 312 meshes with the shaft 320 of the laminating roller 120 having a one-way clutch built therein. As a result, as described above, the photosensitive material 16 formed by the bonding roller 120 is used.
And the conveying speed of the image receiving material 108, the squeeze roller 6
The conveyance speed of the photosensitive material 16 or the image receiving material 108 by the roller 8 and the conveying roller 114 is set to be slightly slower so that the back tension acts on the photosensitive material 16 and the image receiving material 108.

A shaft 322 of a bending guide roller 142, which will be described later, meshes with the gear 318, and the driving force is transmitted to rotate the gear 318. Further, the gear 316
Similarly, a shaft 324 of a peeling roller 174, which will be described later, meshes with the shaft 324, and the driving force is transmitted to rotate the shaft. That is, the drum motor drives all of these driving units (the winding roller 140, the laminating roller 120, the bending guide roller 142, and the peeling roller 174).

The photosensitive material 16 and the image receiving material 108 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 is sandwiched and conveyed over approximately 1/2 circumference of the heating drum 116 (between the winding roller 134 and the winding roller 140). When the photosensitive material 16 is heated during this nip conveyance, it releases a movable dye, and at the same time, this dye is transferred to the dye fixing layer of the image receiving material 108 to obtain an image.

A bending guide roller 142 is provided below the heating drum 116 on the downstream side of the endless pressure contact belt 118 in the material supply direction.
Are arranged. As described above, the bending guide roller 142 is configured so that the shaft 322 is rotated by transmitting the driving force of the drum motor. Further, the bending guide roller 142 is pressed against the outer circumference of the heating drum 116. Therefore, the photosensitive material 16 or the image receiving material 108 conveyed by the heating drum 116 and the endless pressure contact belt 118 can be further nipped 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 supply direction.
It is rotatably supported by 6. The peeling claw 154 corresponds to the outer circumference of the heating drum 116, and can be brought into contact with and separated from the heating drum 116 by the operation of a solenoid (not shown). The peeling claw 154 is provided on the heating drum 11
6 rotates, and when the cam 130 reaches a predetermined position, the cam 6 rotates to come into contact with the outer periphery of the heating drum 116. In this case, when the heating drum 116 rotates to a predetermined position and the tip of the photosensitive material 16 reaches the peeling position,
The dimensions of each part such as the fixing position of the cam 130 detected by the sensor for operating the solenoid are set so that the peeling claw 154 rotates and comes into contact with the heating drum 116.

When the peeling claw 154 is in contact with the heating drum 116, the endless pressure contact belt 118 and the heating drum 116 are in contact with each other.
The photosensitive material 16 and the image receiving material 108 which are nipped and conveyed between
Among them, only the leading end portion of the photosensitive material 16 superposed in a state of preceding by a predetermined length can be engaged, and this leading end portion can be peeled from the outer periphery of the heating drum 116. It is configured to be moved downward while being wound around the bending guide roller 142.

Below the bending guide roller 142 and the peeling claw 154, sensitive material discharge rollers 158 and 160 and a plurality of guide rollers 162 are arranged.
Photosensitive material 1 that is moved downward while being wound around 42
6 can be further conveyed and accumulated in the waste photosensitive material storage box 178. The sensitive material discharge rollers 158 and 160 are configured to rotate by receiving the driving force of the water application motor for driving the water application section 62 as described above. In addition, the guide roller 1
A heater 164 (drying plate) is arranged around 62, and the photosensitive material 16 can be conveyed while being dried. The temperature of the heater 164 is set to about 90 ° C. Further, a drying fan 165 is arranged near the photosensitive material discharge roller 10 to accelerate the drying of the photosensitive material 16.

On the other hand, a material receiving guide 166 is arranged above the peeling claw 154 to guide the image receiving material 108 which is separated from the photosensitive material 16 and moves together with the heating drum 116. This material receiving guide 166 is also provided with a Teflon material, a Teflon processing, or a Teflon processing on the embossed plate to reduce friction, thereby preventing the image receiving material 108 from sticking by improving slippage of the image receiving material 108. ing.

Heating drum 11 above receiving material guide 166
A peeling roller 174 and a peeling claw 176 are arranged in the vicinity of 6. The peeling roller 174 also has the shaft 3 as described above.
24 is adapted to rotate by receiving the driving force of the drum motor, and removes the image receiving material 108 which is guided by the material receiving guide 166 and moves together with the heating drum 116.
6 works together with 6 to peel off from the outer periphery of the heating drum 116 to guide the bending.

On the side of the peeling roller 174 and the peeling claw 176, a material receiving guide 170 and a material receiving discharge roller 172 are arranged. The material receiving guide 170 is also subjected to a friction reducing treatment such as Teflon processing to prevent sticking, similarly to each of the above-described conveying guides for the image receiving material 108. In this case, a fluorine-containing resin is preferred when doing this with a resin. As described above, the respective friction guides are applied to the respective conveyance guides of the image receiving material 108 to improve the slip of the image receiving material 108 and prevent the image receiving material 108 from sticking.

A drum fan 168 is arranged near the peeling roller 174. Therefore, the heating drum 116
The image receiving material 108 moving along the heating drum 116 is
Not only is it dried by the heat of, but also this drum fan 168 accelerates the drying. 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.

The image receiving material 108 peeled from the outer periphery of the heating drum 116 by the peeling claw 176 while being dried by the drum fan 168 is used as the material receiving guide 1.
70 and the receiving material discharge roller 172, and is discharged to the tray 177. In this case, the downstream end of the material receiving guide 170 in the transport direction is arranged at a position lower than the lower transport guide plate 184 of the image receiving material transport unit 180 described above, and the image receiving material 108 curls into the gap between them. The tray 177 is prevented from entering and can be reliably stacked on the tray 177. Further, the tray 184 is provided on the front side of the machine base 12 (front side of FIG. 1) so that the image receiving material 108 can be guided and accumulated in the direction orthogonal to the conveying direction by the heating drum 116.

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

As shown in FIG. 3, the heat development transfer section 104 is also provided.
An exhaust fan 330 as an exhaust unit is arranged near the (heating drum 116) to ventilate the inside of the machine base 12. On the other hand, as shown in detail in FIG. 19, in the side door 15B on the side opposite to the heat development transfer portion 104 (that is, in the vicinity of the photosensitive material magazine 14 and the receiving material magazine 106), a blower fan as a blower means having a built-in filter. 332 is attached and external air can be sent into the machine base 12. In this case, both capacities are set so that the amount of air supplied by the blower fan 332 is larger than the amount of air discharged by the exhaust fan 330. Therefore, the inside of the machine base 12 is ventilated and cooled, and at the same time is kept in a pressurized state, which prevents dust from entering the machine base 12 from the outside.

Next, the operation of this embodiment will be described. In the image recording apparatus 10 having the above-described configuration, the sensitive material magazine 14 is provided in
After being set within 00, the photosensitive material 16 is pulled out by the nip roller 18 and cut into a predetermined length by the cutter 20. The cut photosensitive material 16 is conveyed and inverted by the conveying rollers 19, 21, and 23, and is conveyed to the exposure unit 22 with its photosensitive (exposure) surface facing upward. 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 16 is in a standby state immediately before the exposure unit 22.

On the other hand, while the photosensitive material 16 is being conveyed, the original 54 on the original placing plate is press-cleaned.

That is, first, the light source 40 is actuated, and the reflecting mirror 46 enters the optical path of the image light with which the exposure section 22 is irradiated, and the moving mirrors 42A and 42A.
The light emitted through B and the fixed mirror 44 is reflected in a substantially right angle direction. The reflected light is incident on and detected by the light detection sensor 56, whereby the image density of the image of the document 54 (in other words, whether the image of the document 54 is a print document or a photo document). Is measured, and the exposure conditions of the color adjustment filter (CC filter) and the aperture slit plate 52 are set based on the measured values.

Then, the reflecting mirror 46 is removed from the optical path of the image light, and the light source 40, the moving mirrors 42A, 4 and
2B and the lens unit 48 return to the home position (image scanning start position).

Here, the driving of the carrying rollers 24 and 26 is started again, and the photosensitive material 16 is exposed to the exposing section 22.
At a predetermined speed (for example, 100 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 is flat (while the deformation is corrected) and passes between the two conveying rollers (exposure section). .

At the same time when the photosensitive material 16 is conveyed (passes through the exposure unit 22), the light source 40, the moving mirrors 42A and 42B, and the lens unit 48 move along the document placing plate 50 and are placed on the document placing plate 50. The document 54 placed is irradiated with light, and the reflected image light (image light) is scanned and exposed on the photosensitive material 16 located in the exposure section 22 via the fixed mirror 44.

After the exposure is started, the exposed photosensitive material 16 is sequentially guided by the guide plate 27 and inverted (that is, the image exposure surface is directed downward), and then the conveying roller 2 is moved.
It is sent to the water application section 62 by 9, 31, 33, and 35.

In the water coating section 62, the conveyed photosensitive material 1
When 6 is detected by the photosensitive material sensor 74, the conveying speed of the conveying rollers 29, 31, 33, 35 is reduced, and the supply roller 66 and the squeeze roller 68 are driven so that the photosensitive material 16 is guided by the guide plate 70 and the coating tank 64. And is sandwiched 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. Material 1
6 is coated with water, and the squeeze roller 68 removes excess water and passes through the water coating 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 direction in which the photosensitive material 16 is conveyed, 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 certainly reached.

The photosensitive material 16 coated with water as the image forming solvent in the water coating section 62 is squeeze roller 6
It is sent to the heat developing and transferring section 104 by 8.

On the other hand, the image receiving material 108 is also the receiving material magazine 10.
The cutter 1 is pulled out from the 6 by the Nipro roller 110.
After being cut to a predetermined length by 12, the upper conveyance guide plate 182 and the lower conveyance guide plate 18 of the image receiving material conveying section 180 are cut.
4 and is fed to the heat development transfer section 104.

In this case, after cutting the image receiving material 108, the nip by the nip roller 110 is released, and the image receiving material 1
Deformation and change in physical properties due to nipping of the tip portion (image forming surface) of 08 for a long time are prevented. Further, a plurality of ribs 188 and 192 are formed on the upper conveyance guide plate 182 and the lower conveyance guide plate 184 of the image receiving material conveying section 180, and further, Teflon processing is applied to reduce friction with the image receiving material 108. Therefore, the image receiving material 108 is quickly conveyed without being scratched.

In the heat development transfer section 104, the heating drum 11
6 between the outer circumference and the laminating roller 120
And the image receiving material 108 is fed.

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. In addition, the laminating roller 120 and the image receiving material 1
Blade guide 12
4 is arranged, and the image receiving material 108 is also surely 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 image receiving material 108 conveyed to the heat development transfer section 104 is synchronized with the conveyance of the photosensitive material 16,
The photosensitive material 16 has a predetermined length (20 m in this embodiment).
m) In the preceding state, it is sent between the laminating roller 120 and the heating drum 116 and superposed. Further, in this case, since the image receiving material 108 is smaller than the photosensitive material 16 in both the width direction and the longitudinal direction, the peripheral portion of the photosensitive material 16 has four sides of the image receiving material 108 as shown in FIG. Stacked in a state of protruding from the peripheral portion.

The photosensitive material 16 and the image receiving material 108 superposed by the laminating roller 120 remain in the superposed state and the heating drum 116 and the endless pressure contact belt 11
It is sandwiched between the heating drum 116 and the heating drum 116, and is approximately 1/2 round (between the winding roller 134 and the winding roller 140).
Be transported to. When the photosensitive material 16 is heated during this nip conveyance, it releases a movable dye, and at the same time, this dye is transferred to the dye fixing layer of the image receiving material 108 to obtain an image.

Further, 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 located inside. Since the image receiving material 108 protrudes from both end portions in the width direction of the image receiving material 108 and is superposed on the image receiving material 108, the protruding portion is closely attached to the outer periphery of the heating drum 116. Therefore, the image receiving material 108 located inside is 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. For this reason,
Even if a slight difference in rotation speed occurs between the endless pressure welding belt 118 and the heating drum 116 and a shearing force acts between the two materials, the two materials remain firmly adhered and are not displaced. Therefore, a high-quality image without transfer deviation can be obtained.

Furthermore, since the endless pressure contact belt 118 has conductivity, generation of static electricity due to friction between the heating drum 116 and the endless pressure contact belt 118 or the photosensitive material 16 or the image receiving material 108 is prevented, and the image receiving material 108 is prevented. Fog does not occur in the obtained image.

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 moved by a solenoid (not shown) and precedes the image receiving material 108 by a predetermined length. The peeling claw 154 engages with the leading end of the conveyed photosensitive material 16 to peel the leading end of the photosensitive material 16 from the outer periphery of the heating drum 116.

The peeled photosensitive material 16 is wound around the bending guide roller 142 and then conveyed by the photosensitive material discharge roller 158. Further, after being dried by the heater 164 while being guided by the guide roller 162, it is accumulated in the waste photosensitive material storage box 178 by the photosensitive material discharge roller 160.

On the other hand, the heating drum 1 is separated from the photosensitive material 16.
The image receiving material 108 that moves while being in close contact with 16.
Moves between the heating drum 116 and the peeling claw 154 separated from the outer periphery thereof, and is guided by the material receiving guide 166 and sent to the peeling roller 174. In this case, since the material receiving guide 166 is subjected to Teflon processing, the image receiving material 108 does not stick.

Further, here, it is peeled from the outer periphery of the heating drum 116 by the peeling roller 174 and the peeling claw 176, conveyed by the material receiving discharge roller 172 while being guided by the material receiving guide 170, and accumulated on the tray 177. In this case as well, the image receiving material 108 does not adhere because the material receiving guide 170 is subjected to Teflon processing.

In the above image recording processing, the exhaust fan 330 and the blower fan 332 are constantly driven to ventilate the inside of the machine body 12. Therefore, the inside of the machine body 12 can always be maintained at a constant temperature condition. Also here
The amount of air supplied by the blower fan 332 is the exhaust fan 3
Since it is set to be larger than the amount of air discharged by 30,
The inside of the machine body 12 is always in a pressurized (positive pressure) state. Therefore, dust is not sucked together with air from the gap between the machine walls of the machine body 12 and does not enter the inside. In other words, the outside air is not sucked through the gap of the machine wall of the machine body 12, and the blower fan 3 is always used.
Only by 32 is the dust-free outside air fed into the body 12.

Therefore, the photosensitive material 16 and the image receiving material 10
No dust is attached to the image forming surface of No. 8, a good image is formed, and it does not cause a malfunction of the apparatus.

In this embodiment, the photosensitive material 16 and the image receiving material 108 are used as the image recording material, and the photosensitive material 16 is conveyed so as to be located outside the image receiving material 108. However, the present invention is not limited to this, and is applicable even when the photosensitive material 16 is positioned inside and conveyed, and is not limited to these materials and may be another sheet-shaped image recording material.

[0108]

As described above, the image recording apparatus according to the present invention is not only capable of constantly maintaining a constant temperature condition by ventilating the inside of the apparatus, but also can prevent dust from entering with a simple structure. It has an excellent effect.

[Brief description 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 an overall external view of the image recording apparatus.

FIG. 3 is an overall external view of the image recording apparatus showing a state in which each door is opened.

FIG. 4 is a perspective view showing a photosensitive material magazine and a storage portion thereof.

5 is a sectional view showing a photosensitive material magazine and its accommodating portion, corresponding to FIG. 4;

FIG. 6 is a schematic configuration diagram of a drive system for driving a cutter.

FIG. 7 is an exploded perspective view showing a coating tank of a water coating section and peripheral components.

FIG. 8 is a schematic configuration diagram of a drive system for driving a supply roller and a squeeze roller.

FIG. 9 is a water supply system diagram of a water application unit.

FIG. 10 is a perspective view showing a mounting state of the water amount sensor arranged in the refill tank.

FIG. 11 is a schematic configuration diagram of a nickel roller portion.

FIG. 12 is a schematic configuration diagram of a drive system for driving a nip roller.

FIG. 13 is a cross-sectional view of an image receiving material transporting unit that transports the image receiving material after cutting.

FIG. 14 is a perspective view of an image receiving material transport unit corresponding to FIG.

FIG. 15 is a perspective view of a heating drum of a heat development transfer section.

FIG. 16 is a plan view showing a superposed state of a photosensitive material and an image receiving material.

FIG. 17 is a partial cross-sectional view of a heating drum and an endless press-contacting belt showing a close contact state between a photosensitive material and an image receiving material.

FIG. 18 is a schematic configuration diagram of a drive system for driving a winding roller.

FIG. 19 is a perspective view showing an open state of a side door and a blower fan.

[Explanation of symbols]

 10 Image Recording Device 14 Photosensitive Material Magazine 16 Photosensitive Material 38 Exposure Device 62 Water Application Section 104 Thermal Development Transfer Section 106 Receiving Material Magazine 108 Image Receiving Material 116 Heating Drum 330 Exhaust Fan (Exhaust Means) 332 Blower Fan (Blower Means)

Claims (1)

[Claims] 1. An image recording apparatus which uses two types of image recording materials housed in different magazines and performs image recording processing by exposing one image recording material imagewise and then closely contacting and superposing the other image recording material. The exhaust means for exhausting the air inside the apparatus body and the magazine for accommodating the two types of image recording materials are arranged in the vicinity of the apparatus to feed the dust-free outside air into the apparatus body, and An image recording apparatus, comprising: a blower unit set to be larger than the exhaust unit.