JPH02233443A - Picture image forming device - Google Patents

Abstract

PURPOSE:To prevent an image receiving sheet delivered from a pressure developing roller from being transported in the direction of a take-up shaft by providing rotatably a loading guide plate while providing a guide plate drive means for holding said guide plate in a loading position and retreat position. CONSTITUTION:In loading, a leader sheet is passed through upper and lower pressure developing rollers 11, 12 by a loading mechanism, guided by an image receiving sheet guide plate 15 and loading guide plate 16, passed between the guide plate 16 and a cantilever shaft 20 and further guided by a transport guide plate 17 to be taken up by a take-up shaft 13. Then, since the sheet is tensioned between the roller 13 and shaft 22, the shaft 20 is pushed upward, and the guide plate 16 connected to the shaft 20 is pivoted to the upper retreat position to be held in this position by a tension spring 19. Thus, an image receiving sheet transport path on the guide plate 15 is opened and the image receiving sheet delivered from the upper and lower developing rollers 11, 12 proceeds without being guided upward by the guide plate 16.

Description

Detailed Description of the Invention [Industrial Application Field] The present invention is a method of transferring a latent image formed on a photosensitive sheet by exposure to an image receiving sheet by pressure transfer to obtain a desired image on the image receiving sheet. The present invention relates to an image forming apparatus.

[Conventional technology]

This type of conventional image forming apparatus uses a strip-shaped photosensitive sheet coated with microcapsules containing a dye and a photocurable substance, and after exposing this photosensitive sheet to form a latent image, By stacking the sheet and the image-receiving sheet coated with developer and applying pressure with a pressure developing roller, the uncured microcapsules of the photosensitive sheet are destroyed, and the dye inside the capsules forms the desired image on the image-receiving sheet. It is supposed to form.

The above photosensitive sheet is wound into a roll around a core material to form a photosensitive sheet cassette, and this photosensitive sheet cassette is further stored in a carriage. The entire carriage can be attached to and removed from the image forming apparatus body. When the photosensitive sheet cassette is replaced and attached to the main body of the image forming apparatus together with the carriage, the leader sheet attached to the leading end of the photosensitive sheet is activated by the loading mechanism to take up the used photosensitive sheet. It is wound around the shaft. At this time, the leader sheet is sent out to the photosensitive sheet transport path by a transport roller, passes through a pressure developing roller and a loading guide plate that guides the leader sheet, reaches the winding shaft, and is wound up. It is designed to be wound around a shaft. In this state, image forming operation is possible. On the other hand, during an image forming operation, the latent image formed on the photosensitive sheet by the exposure operation is transferred to an image receiving sheet by a pressure developing roller, and this image receiving sheet is placed in a predetermined position by an image receiving sheet guide plate provided below a loading guide plate. The robot is guided in the direction of conveyance. [Problems to be Solved by the Invention] However, in the above-mentioned conventional structure, the loading guide plate provided on the paper output side of the pressure developing roller is provided in a fixed state and does not take up the leader sheet during loading. Although it is located at a position where it can be appropriately guided in the axial direction, there is a risk that the image receiving sheet ejected from the pressure developing roller may also be conveyed in the winding axial direction during the image forming operation after loading. On the other hand, if the space between the loading guide plate and the image-receiving sheet guide plate is set wide in order to secure a conveyance path for the image-receiving sheet, there is a problem that loading of the leader sheet may be hindered. ．． [Means for Solving the Problem] In order to solve the above problem, an image forming apparatus according to the invention of claim 1 has a photosensitive sheet wound into a roll, and the photosensitive sheet is attached to the main body of the apparatus. When the photosensitive sheet is loaded, the loading mechanism guides the leading end of the photosensitive sheet to the winding shaft 5 via the pressure developing roller and the loading guide plate, which press the photosensitive sheet and the image-receiving sheet so that the winding operation by the winding shaft is performed. On the other hand, during image forming operation, a latent image formed on a photosensitive sheet by an exposure operation is transferred to an image receiving sheet by a pressure developing roller, and this image receiving sheet is guided in a predetermined conveying direction by an image receiving sheet guide plate. In the forming apparatus, the loading guide plate is rotatably provided, and during loading, the loading guide plate is held at a loading position that guides the photosensitive sheet in the direction of the winding axis, and during image forming operation, the loading guide plate is held at an image receiving position. The present invention is characterized in that a guide plate driving means is provided between the sheet guide plate and the loading guide plate to hold the image receiving sheet in a retracted position forming a conveyance path for the image receiving sheet. In order to solve the above problem, an image forming apparatus according to the invention of claim 2 has a photosensitive sheet wound into a roll, and when the photosensitive sheet is attached to the main body of the apparatus, the photosensitive sheet is loaded by a loading mechanism. The leading edge of the sheet is guided to a winding shaft via a pressure developing roller and a loading guide plate that overlap and press the photosensitive sheet and image-receiving sheet, and the winding operation is performed by the winding shaft. In an image forming apparatus in which a latent image formed on a photosensitive sheet by an exposure operation is transferred to an image receiving sheet by a pressure developing roller, and this image receiving sheet is guided in a predetermined conveyance direction by an image receiving sheet guide plate, the loading guide plate described above is used. is rotatably provided, and the loading guide plate has a
The loading guide holding position holds the temporary loading guide at the loading position where the photosensitive sheet is guided in the direction of the winding axis, and the loading guide plate is held at the retracted position where the image receiving sheet conveyance path is formed between the image receiving sheet guide plate and the loading guide plate. The present invention is characterized in that a horizontal shaft is provided on the upper surface side of the loading guide plate and is connected to the loading guide plate and extends in the width direction of the loading guide plate in parallel with the loading guide plate. In order to solve the above-mentioned problem, the image forming apparatus according to the invention of claim 3 is provided such that a photosensitive sheet wound into a roll is removably provided to the main body of the apparatus together with a carriage that accommodates the photosensitive sheet. When the photosensitive sheet is loaded into the main body of the apparatus, the loading mechanism guides the leading end of the photosensitive sheet to the winding shaft via a pressure developing roller and a loading guide plate that overlap and press the photosensitive sheet and image-receiving sheet. While the winding operation is performed by the winding shaft, during the image forming operation, the latent image formed on the photosensitive sheet by the exposure operation is transferred to the image receiving sheet by the pressure developing roller, and this image receiving sheet is transferred by the image receiving sheet guide plate. In an image forming apparatus that is guided in a predetermined conveyance direction,
The loading guide plate mentioned above is rotatable and is provided integrally with the carriage. Loading guide holding means is provided for holding the image receiving sheet guide plate in a retracted position that forms a conveyance path for the image receiving sheet between the image receiving sheet guide plate and the loading guide plate, and the loading guide plate is removed and removed together with the carriage on the main body side member of the apparatus. The present invention is characterized in that it is provided with a loading guide plate driving member that drives the loading guide plate to the loading position when the loading guide plate is loaded. [Function] According to the configuration of the image forming apparatus according to the invention of claim 1, when the photosensitive sheet is attached to the main body of the apparatus, the loading mechanism causes the leading end of the photosensitive sheet to touch the pressure developing roller and the loading guide plate. is guided to the winding shaft through
It is wound up by the winding shaft. On the other hand, during an image forming operation, a latent image formed on a photosensitive sheet by an exposure operation is transferred onto an image receiving sheet by a pressure developing roller, and this image receiving sheet is guided in a predetermined transport direction by an image receiving sheet guide plate. Here, the above-mentioned loading guide plate is rotatably provided, and is held at a loading position where the photosensitive sheet is guided in the direction of the winding axis during loading by the guide plate driving means, while the image-receiving sheet is guided during image forming operation. The image receiving sheet is held at a retracted position where a transport path for the image receiving sheet is formed between the plate and the loading guide plate. Therefore, during loading, the photosensitive sheet is guided in the direction of the winding axis by the loading guide plate, and during image forming operation, the image receiving sheet is not guided in the direction of the winding axis by the loading guide plate, but by the image receiving sheet guide plate. It is reliably guided in the specified transport direction. According to the configuration of the image forming apparatus according to the invention of claim 2, when the photosensitive sheet is attached to the main body of the apparatus, the leading end of the photosensitive sheet is wound up by the loading mechanism via the pressure developing roller and the loading guide plate. guided to the axis,
It is wound up by the winding shaft. Here, since the photosensitive sheet passes between the loading guide plate and the horizontal shaft, when the photosensitive sheet is wound up on the winding shaft and becomes taut, the horizontal shaft is moved upward by the photosensitive sheet. , and the loading guide plate connected to this horizontal shaft is driven from the loading position to the retracted position. In this way, in this device, the loading guide plate can be moved to the retracted position at the same time as loading is completed, so that the image receiving sheet is not guided in the direction of the winding axis by the temporary loading guide during image forming operation. , the image receiving sheet is reliably guided in the predetermined transport direction by the guide plate. According to the configuration of the image forming apparatus according to the invention of claim 3, when the carriage is removed to replace a used photosensitive sheet with a new one, the loading device provided integrally with the carriage The guide plate is also removed at the same time, and this loading guide plate is driven to the loading position by a loading guide plate drive member provided on the device main body side member. In this way, in this device, when replacing the photosensitive sheet, the loading guide plate can be moved to the loading position, so that the photosensitive sheet can be loaded and wound around the winding shaft at the same time as the photosensitive sheet is replaced. [Example] An example of the present invention will be described below based on FIGS. 1 to 7. As shown in FIG. 2, the image forming apparatus of the present invention has an upper document table 2 on which a document 1 to be copied is placed. Below the document table 2 are two light source lamps 4, 4,
An optical section 3 is provided, which is composed of a plurality of reflective mirrors 5 and lenses 6, and scans the original 1 on the original table 2, and irradiates the reflected light onto a photosensitive sheet 25, which will be described later. Two paper feed cassettes 8, 8 containing cut sheet-shaped image receiving sheets 7 of different sizes are attached to one side of the image forming apparatus. A paper feed roller 9 is arranged on the paper output side of each paper feed cassette 8 to feed out the image receiving sheets 7 one by one. Further, a manual paper feed tray 1O is provided above the paper feed cassettes 8. The image receiving sheet 7 is coated with a developer that develops color by reacting with the leuco dye of the photosensitive sheet 25, and a thermoplastic resin is coated on the developer. In the paper output direction of the paper feed cassettes 8, 8, the image receiving sheet 7 is placed between upper and lower pressure developing rollers l1 at predetermined timing.
- A synchronous roller 35 is disposed for supplying between the 12 and 12, and in the paper output direction of this synchronous roller 35, as shown in FIG. is provided. A winding roller 13 serving as a winding shaft for winding up the used photosensitive sheet 25 is provided above the upper and lower pressure developing rollers 11 and 12 in the paper output direction. This take-up roller 13 is provided in a cassette case 39 of a photosensitive sheet cassette 26, which will be described later. In addition, in the paper output direction of the lower pressure developing roller 12, the image receiving sheet 7 is guided to the conveying roller l4, and
Loading guide plate 16 for leader sheet 31 (described later)
An image-receiving sheet guide plate 15 is provided between the image-receiving sheet guide plate 15 and the take-up roller 13.
A loading guide plate 16 and a conveyance guide plate l7 are provided. Both guide plates 16 and 17 mentioned above are provided integrally with a carriage 36, which will be described later, and are shown in FIGS. 1 and 3.
As shown in the figure, it is rotatable around a support shaft 18. As shown in FIG. It is formed narrower than the width of the sheet 3l, and is arranged on the back side of the image forming apparatus shown in FIG. 2, on the opposite side from the front side where the jam clearing operation is performed. In addition, the temporary loading guide l6 has a spring retaining part 16a formed at the end on the blue side, and a tension spring l9 as a loading guide retaining means connected to the spring retaining part 16a is used to support the support shaft 18.
is being pulled in the direction of As a result, the temporary loading guide 16 can take a loading position, which is rotated downward, or a retracted position, which is rotated upward, as shown in FIG. 4, and is held in either of these positions. It looks like this. Furthermore, as shown in FIG. 1, the loading guide plate l6 has a
A contact receiving portion 16b is formed which is inclined downward from the front.

When the loading guide plate 16 is removed from the main body of the image forming apparatus together with the carriage 36, the abutment receiving portion 16b has an abutment disposed in the opening 37a of the side panel 37 located in the front direction of the loading guide plate l6. Member 38
are in contact with each other, the contact receiving portion 16b is pushed downward by the contact member 38, and the loading guide plate l6 is rotated downward to the retracted position. A cantilever shaft 20 is provided on the upper surface of the loading guide plate 16 as a horizontal shaft that is parallel to the loading guide plate 16 and extends from the back end of the loading guide plate 16 in the width direction of the loading guide viisO. A leader sheet 31 and a photosensitive sheet 25 are passed between the cantilever shaft 20 and the loading guide plate 16. On the other hand, the lower end of the conveyance guide plate 17 is pulled by the tension spring 21, so that the leading end of the conveyance guide plate 17 is moved toward the winding opening roller l3.
It is adapted to be pressed against the surface of the leader sheet 31 or the photosensitive sheet 25 that has been wound up. Further, a peeling guide shaft 22 is provided above the image receiving sheet guide plate l5, and a winding detection switch 23 is arranged between the peeling guide shaft 22 and the winding reroller 13. This winding detection switch 23 is activated when the leader sheet 31 at the tip of the photosensitive sheet 25 is wound around the winding roller 13 by the loading mechanism, and the photosensitive sheet 31 is exposed between the winding opening roller 13 and the peeling guide shaft 22. When tension occurs on the sheet 25, it is pressed by the photosensitive sheet 25 and turns on. The winding detection switch 23 is connected to a control means (not shown) that controls the loading mechanism, and this control means is activated when the winding detection switch 23 is turned ON or when a predetermined period of time has passed after the winding detection switch 23 is turned ON. Sometimes the loading mechanism is stopped.

A photosensitive sheet 25 is provided on the side of the take-up roller l3 and supported by a supply shaft 24. The photosensitive sheet 25 is a photosensitive pressure-sensitive material, and a large number of microcapsules each containing a leuco dye and a photocurable substance and having a particle size of about 10 to 20 μm are coated on a light-reflective metal sheet such as aluminum. It is something that The photosensitive sheet 25 is wound into a roll, and as shown in FIG. It is worn. This leadership sheet 31 is
A large number of guide holes 31a are formed along both side edges. As shown in FIG. 6, the photosensitive sheet 25 is housed in a light-shielding cassette case 39, and a conveyor roller is placed in the upper part of the outer cassette case 39, which is formed as an angry light sheet cassette 26. 28 and the guide roller 2 shown in FIG.
7, and below both rollers 27 and 28, a supply shaft 24 around which the photosensitive sheet 25 is wound and the aforementioned take-up reroller 13 are provided. Double-sided adhesive tape 40 is attached to the surface of the take-up reroller 13 at multiple locations, and a leader sheet 3l is attached to the double-sided adhesive tape 40 during loading.
By pasting the leader sheet 31, the leader sheet 31 can be wound up. The above-mentioned cassette case 39 is removably attached to a carriage 36 shown in FIG. The carriage 36 includes a tractor roller 29 having sprockets 29a and 29a at both ends, guide members 4l and 41 for holding the photosensitive sheet 25, an operation part 42 for adjusting the position of the guide member, and a drive unit 42 for pulling out the carriage 36. handle 43, supply shaft 24
An operating section 44 and the like are provided for rotating the machine as desired by the operator. Further, the carriage 36 can be pulled out in the front direction with respect to the main body of the apparatus by sliders 45 and 46 provided on both sides. Further, the carriage 36 is integrally provided with the aforementioned loading guide plate l6, conveyance guide plate l7, and support shaft l8, and as the carriage 36 is pulled out, these guide plates 1
6, 17 and the support shaft 18 can be pulled out.

The photosensitive sheet 25 of the photosensitive sheet cassette 26 is as follows:
Guide roller 27, conveyance roller 28, tractor roller 29
, Buffalora 30, upper and lower pressure developer cola 11
-12, the film is wound onto a winding reroller 13 via a peeling guide shaft 22 and a cantilever shaft 20. The buffer roller 30 described above is adapted to move in the direction of arrow A at a predetermined speed during the exposure operation of this apparatus. The predetermined speed at this time is determined according to the copying magnification and the document scanning speed, that is, the moving speed of the light source lamps 4. The tractor roller 29, the buffer roller 30, the upper and lower pressure developing rollers 11 and 12, the peeling guide shaft 22, the image receiving sheet guide plate 15, the loading guide plate 16, the conveyance guide plate 17, and each roller (not shown) Drive device, control means and winding detection switch 23
The loading mechanism is composed of the following. Further, in the front direction of the carriage 36, a side panel 37 is provided as a member on the apparatus main body side. This side panel 37 has an opening 37a formed in a portion corresponding to the carriage 36 for pulling out the middle ridge 36 in the front direction and for clearing a jam. As described above, this opening 37a is provided with an abutting member serving as a loading guide plate driving member.

The tension spring 19, the cantilever shaft 20, and the contact member 38 constitute a guide plate driving means. On the other hand, a conveyance roller 14 is provided diagonally below the image-receiving sheet guide plate 15 for conveying the image-receiving sheet 7 output from the upper and lower pressure developing rollers 11 and 12. A glossing device 47 having a heat roller 32 is provided on the paper output side of the conveyance roller 14, and a wandering device 47 that discharges the image receiving sheet 7 onto the stray paper tray 33 is provided in the paper output direction of the glossing device 47. A Gion roller 34 is provided. The above glossing device 47
By promoting the color development of the colored image formed on the image receiving sheet 7 and melting the thermoplastic resin on the developer on the image receiving sheet 7 by the heat roller 32 to make it uniform,
It is designed to give gloss to the surface of the colored image. In the above configuration, the original 1 placed on the original stacking table 2 is scanned by the light source lamp 4 of the optical section 3, and the reflected light from the original 1 passes through the reflecting mirror 5 and the lens 6, and is exposed to light. The sheet 25 is irradiated, . In response to this exposure operation, the photosensitive sheet 25 is sent out by the guide roller 27, conveyance roller 28, tractor roller 29, buffer roller 30, etc., and a latent image corresponding to the image of the original document 1 is formed on the photosensitive sheet 25. be done. Then, the image receiving sheet 7 fed from the paper feed cassette 8 or the manual paper feed tray 10 by the paper feed roller 9 is subjected to upper and lower printing forces by the synchronizing roller 35 in synchronization with the latent image on the photosensitive sheet 25. It is supplied between the developing rollers 11 and 12, and the photosensitive sheet 25 and the image receiving sheet 7 are pressed together in a superimposed state by these upper and lower pressure developing rollers 11 and 12. This results in
The uncured microcapsules on the photosensitive sheet 25 are destroyed, the leuco dye inside the capsules flows out, and the developing material on the image receiving sheet 7 causes a coloring reaction to form a colored image on the image receiving sheet 7. It will be done. The photosensitive sheet 25 that has undergone the above pressure developing operation is wound up by the winding roller l3 via the peeling guide shaft 22. Further, the image receiving sheet 7 is connected to the image receiving sheet guide plate 1.
5 and reaches the conveyance roller l4, and is conveyed to the glossing device 47. The image receiving sheet 7 that has reached the glossing device 47 is subjected to a glossing process by heating and pressurizing, and then transferred to the wandering roller 3.
The paper is discharged onto the wandering paper tray 33 at step 4. Here, when replacing the used photosensitive sheet 25 with a new one, by pulling the handle 43 of the carriage 36, the carriage 36 is pulled out toward the front of the main body of the apparatus. At this time, the used photosensitive sheet 25 is transferred to the take-up roller.
It is wound up in 3. Furthermore, when the carriage 36 is pulled out, the loading guide plate 16 and the transport guide plate l
7 is pulled out at the same time, the contact member 38 provided on the side panel 37 contacts the contact receiving portion 16b of the loading guide plate l6, the loading guide plate 16 rotates downward, and is held at the loading position by the tension spring 19. It will be done. Next, the used photosensitive sheet cassette 26 is taken out from the carriage 36, and a new photosensitive sheet cassette 26 is set. Next, the carriage 36 is pushed toward the surface of the main body of the apparatus and placed in a predetermined position. After that, the loading mechanism loads the leader sheet 31.
is sent out to the conveyance path of the photosensitive sheet 25, and is wound up by the winding roller l3. At this time, first, the operating section 44 of the carriage 36 is manually rotated to feed out the photosensitive sheet 25, and then the guide hole 31a of the leader sheet 31 is inserted into the sprocket 29 of the tractor roller 29.
a and 29a, and hold down the leader sheet 31 with the guide members 41 and 4l. In this state, when the loading mechanism is activated, the leader sheet 31 is
Buffalo roller 30, upper and lower pressure developing roller l1.
12, is guided by the image receiving sheet guide plate 15 and the loading guide plate 16, and is guided by the loading guide temporary 1.
6' and the cantilever shaft 20, and is further guided by the temporary conveyance guide l7 to reach the winding opening roller l3. Then, it is adhered to the winding roller 130 and the double-sided adhesive tape 40, and is wound around the winding roller l3. When the leader sheet 31 is wound around the take-up roller 13 by loading as described above, the leader sheet 31 is moved between the take-up reroller l3 and the peeling guide shaft 22.
will be tense. As a result, the cantilever shaft 20 is pushed upward, and the loading guide plate l6 connected to the cantilever shaft 20 is rotated upward to the retracted position and held at this position by the tension spring 19. Therefore, the conveyance path of the image receiving sheet 7 on the image receiving sheet guide plate 15 is opened, and the image receiving sheet 7 outputted from the upper and lower pressure developing rollers 11-12 is guided upward by the loading guide plate 16. It is possible to reliably proceed in the direction of the glossing device 47. Further, as the leader sheet 31 is stretched as described above, the take-up detection switch 23 is turned ON by being pushed by the leader sheet 31, and the loading mechanism is stopped by the control means that detects this. Therefore,
This device can reliably detect the completion of loading. Note that the guide plate driving means is not limited to the configuration shown in this embodiment, and includes, for example, a solenoid that drives the loading guide plate 16, the above-mentioned winding detection switch 23 that detects the completion of loading, and this winding It may also be constructed from a control means that controls the operation of a solenoid by the ON/OFF operation of the detection switch 23. [Effects of the Invention] As described above, the image forming apparatus according to the invention of claim 1 has a photosensitive sheet wound into a roll, and when the photosensitive sheet is attached to the main body of the apparatus, the loading mechanism ,
The leading edge of the photosensitive sheet is transferred to the winding shaft via a pressure developing roller and a loading guide plate that overlap and press the photosensitive sheet and image-receiving sheet, and the winding operation is performed by the winding shaft, while an image forming operation is performed. Sometimes, in an image forming apparatus in which a latent image formed on a photosensitive sheet by an exposure operation is transferred to an image receiving sheet by a pressure developing roller, and this image receiving sheet is guided in a predetermined conveyance direction by an image receiving sheet guide plate, the above-mentioned loading is performed. The guide plate is rotatably provided, and during loading, the loading guide plate is held at a loading position that guides the photosensitive sheet in the direction of the winding shaft, and during image forming operation, the loading guide plate is placed between the image receiving sheet guide plate and the loading guide plate. This configuration includes a guide plate driving means for holding the image receiving sheet in a retracted position that forms a transport path for the image receiving sheet between the image receiving sheet and the image receiving sheet. Therefore, during loading, the photosensitive sheet can be guided in the direction of the winding axis by the loading guide plate, and during image forming operation, the image-receiving sheet guide plate does not block the transport path of the image-receiving sheet. This provides the effect that the image-receiving sheet can be reliably guided in a predetermined conveyance direction.

As described above, the image forming apparatus according to the invention of claim 2 has a photosensitive sheet wound into a roll, and when the photosensitive sheet 1 is attached to the main body of the apparatus, the loading mechanism loads the photosensitive sheet. The leading edge of the sheet is guided to a winding shaft via a pressure developing roller and a loading guide plate that overlap and press the photosensitive sheet and image-receiving sheet, and the winding operation is performed by the winding shaft. In an image forming apparatus in which a latent image formed on a photosensitive sheet by an exposure operation is transferred to an image receiving sheet by a pressure developing roller, and this image receiving sheet is guided in a predetermined conveying direction by an image receiving sheet guide plate, the above-mentioned loading is performed. The guide plate is rotatably provided, and the loading guide plate has a loading position where the loading guide plate guides the photosensitive sheet in the direction of the winding axis, and a loading position where the loading guide plate is connected to the image receiving sheet guide plate and the loading guide plate. A loading guide holding means for holding the image receiving sheet at a retracted position forming a transport path for the image receiving sheet is provided between the loading guide plate and the loading guide plate connected to the loading guide plate and parallel to the loading guide plate on the upper surface side of the loading guide plate. This configuration is provided with a horizontal shaft extending in the width direction.

Therefore, the loading guide plate can be moved to the retracted position at the same time as loading is completed. As a result, during the image forming operation, the image-receiving sheet can be reliably guided in a predetermined transport direction by the image-receiving sheet guide plate without blocking the transport path of the image-receiving sheet by the loading guide plate.

As described above, in the image forming apparatus according to the invention of claim 3, the photosensitive sheet wound into a roll is removably provided with respect to the apparatus main body together with the carriage for accommodating the photosensitive sheet, and When loading the photosensitive sheet into the machine, the leading edge of the photosensitive sheet is guided by the loading mechanism to the winding shaft via the pressure developing roller and the loading guide plate, which overlap and press the photosensitive sheet and the image-receiving sheet. While the winding operation is being performed, during the image forming operation, the latent image formed on the photosensitive sheet 1 by the exposure operation is transferred to the image receiving sheet by the pressure developing roller, and this image receiving sheet is conveyed in a predetermined direction by the image receiving sheet guide plate. In an image forming apparatus that guides the photosensitive sheet in the direction, the temporary loading guide is rotatable and is provided integrally with the carriage, and the loading guide plate includes a loading guide plate that guides the photosensitive sheet in the direction of the winding axis. ．． Loading guide holding means for holding the loading position and the loading guide plate at a retracted position forming an image receiving sheet conveying path between the image receiving sheet guide plate and the loading guide plate is provided on the apparatus main body side member. This configuration is provided with a loading guide plate driving member that drives the loading guide plate to the loading position when the loading guide plate is removed and removed together with the carriage.

Therefore, when replacing the photosensitive sheet, the loading guide plate can be moved to the loading position. This has the effect that it becomes possible to reliably perform loading at the same time as exchanging the photosensitive sheet.

[Brief explanation of the drawing]

1 to 7 show an embodiment of the present invention, in which FIG. 1 is a perspective view showing the structure near the loading guide plate, and FIG. 2 is a schematic view showing the overall structure of the image forming apparatus. A front view, FIG. 3 is an enlarged view of the vicinity of the loading guide plate shown in FIG. 2, FIG. 4 is an explanatory diagram showing the operation of the loading guide plate, and FIG. 5 is a plan view showing the leader sheet at the leading end of the photosensitive sheet. , FIG. 6 is a perspective view showing the photosensitive sheet cassette, and FIG. 7 is a perspective view showing the carriage with no photosensitive sheet cassette set therein pulled out from the main body of the apparatus to the front side. 3 is an optical section, 7 is an image receiving sheet, 1l is an upper pressure developing roller, 12 is a lower pressure developing roller, 13 is a winding reroller (winding shaft), 15 is an image receiving sheet guide plate, 16 is a loading guide plate, 17 is a Conveyance guide plate, l8 is support shaft, l9
is a tension spring (guide plate driving means, loading guide holding means), 20 is a cantilever shaft (guide plate driving means, horizontal shaft), 22 is a peeling guide shaft, 23 is a winding detection switch,
25 is a photosensitive sheet, 26 is a photosensitive sheet cassette, 31 is a leader sheet, 36 is a carriage, 37 is a side panel (device body side member), 37a is an opening, 38 is a contact member (guide plate driving means, loading guide plate driving member), 47 is a glossing device.

Claims (1)

[Scope of Claims] 1. It has a photosensitive sheet wound into a roll, and when the photosensitive sheet is attached to the main body of the apparatus, the leading end of the photosensitive sheet is applied by overlapping the photosensitive sheet and the image receiving sheet by a loading mechanism. The latent image formed on the photosensitive sheet by the exposure operation is guided to the winding shaft via the pressure developing roller and the loading guide plate, and the winding operation is performed by the winding shaft. In an image forming apparatus in which the image is transferred onto an image receiving sheet and the image receiving sheet is guided in a predetermined conveying direction by an image receiving sheet guide plate, the loading guide plate is rotatably provided, and the loading guide plate is rotated during loading. The photosensitive sheet is held at a loading position where it is guided in the direction of the winding shaft, and during image forming operation, the loading guide plate is held at a retracted position where a conveying path for the image receiving sheet is formed between the image receiving sheet guide plate and the loading guide plate. An image forming apparatus characterized in that a guide plate driving means is provided. 2. A pressure developing roller and loading device that has a photosensitive sheet wound into a roll, and when the photosensitive sheet is attached to the main body of the apparatus, the leading end of the photosensitive sheet overlaps and presses the photosensitive sheet and the image-receiving sheet using a loading mechanism. It is guided to the winding shaft via a guide plate, and the winding operation is performed by the winding shaft.At the same time, during the image forming operation, the latent image formed on the photosensitive sheet by the exposure operation is transferred to the image receiving sheet by the pressure developing roller. In an image forming apparatus in which the image receiving sheet is guided in a predetermined transport direction by an image receiving sheet guide plate, the loading guide plate is rotatably provided, and the loading guide plate is connected to the photosensitive sheet. and a loading guide holding means for holding the loading guide plate at a loading position for guiding the image receiving sheet in the direction of the winding axis and a retracted position for forming a transport path for the image receiving sheet between the image receiving sheet guide plate and the loading guide plate, and An image forming apparatus characterized in that a horizontal shaft is provided on the upper surface of the loading guide plate and is connected to the loading guide plate and extends in the width direction of the loading guide plate in parallel with the loading guide plate. 3. A photosensitive sheet wound into a roll is removably provided to the main body of the apparatus together with a carriage that accommodates the photosensitive sheet, and when the photosensitive sheet is attached to the main body of the apparatus, the leading end of the photosensitive sheet is loaded by the loading mechanism. is guided to the winding shaft via a pressure developing roller and a loading guide plate that overlap and press the photosensitive sheet and image-receiving sheet, and the winding operation is performed by the winding shaft. In an image forming apparatus in which a latent image formed on a sheet is transferred to an image receiving sheet by a pressure developing roller, and this image receiving sheet is guided in a predetermined conveyance direction by an image receiving sheet guide plate, the loading guide plate is rotatable. , and is provided integrally with the carriage, and the loading guide plate has a loading position where the loading guide plate guides the photosensitive sheet in the direction of the winding axis, and a loading position where the loading guide plate is placed between the image receiving sheet guide plate and the loading guide plate. A loading guide holding means for holding the image receiving sheet in a retracted position that forms a conveyance path for the image receiving sheet is provided on the apparatus body side member, and a loading guide holding means is provided on the apparatus main body side for holding the loading guide plate in the loading position when the loading guide plate is removed together with the carriage. An image forming apparatus characterized by being provided with a loading guide plate driving member to be driven.