JPH0160146B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electrophotographic engraving machine, and more particularly to an electrophotographic engraving machine that directly forms an erect, same-size real image on photosensitive paper using a converging light transmitter and an odd-numbered reflecting mirror as an optical exposure system. This article relates to a type of fixed original type electronic photoengraving machine.

A conventional fixed-original electrophotographic engraving machine uses a converging light transmitter and an odd number of reflection mirrors as an optical exposure system to directly form an erect, same-size real image on photosensitive paper.
A document table is fixedly provided on the upper surface of an electrophotographic engraving machine main body, a charging section, a developing section, and a fixing section are provided in the main body, and a converging light transmitting body and an odd number of reflection mirror are provided in the main body. A scanning box that supports an optical exposure system, and an optical transport system that moves the scanning box forward at a constant speed from the charging section side toward the developing section side parallel to the document table and backward from the developing section side toward the charging section side. and,
A charging conveyance system that guides the photosensitive paper to the charging section, an exposure conveyance system that moves the photosensitive paper forward in the same direction as the optical exposure system at twice the speed of the optical exposure system, and a development conveyance system that guides the photosensitive paper to the developing section. , and a fixing conveyance system that guides the photosensitive paper to a fixing section.

In this type of device, the charging section, developing section, fixing section, etc. become dirty with use, so it is necessary to periodically inspect these parts or remove them from the electrophotographic engraving machine for cleaning. be. Therefore, it is desired to be able to easily inspect the inside of the electrophotographic engraving machine main body.

In order to facilitate internal inspection of the main body of an electrophotographic engraving machine, the main body is divided into a lower casing and an upper casing, and the charging section, developing section, fixing section, etc. are provided in the lower casing, and the upper casing is However, in conventional electrophotographic engraving machines of this type, as disclosed in Japanese Patent Application Laid-open No. 53-56028, the exposure conveyance system is designed to open the photosensitive paper upward. The system consists of an endless belt device that moves at twice the speed in the same direction as the optical exposure system, so if this endless belt device is supported along with the optical exposure system on the upper casing side, the upper casing side becomes heavier and the upper It becomes difficult to push the housing upwards. On the other hand, if the optical exposure system is supported on the upper casing side and the endless belt device is supported on the lower casing side, it becomes difficult to accurately set the distance between the optical exposure system and the endless belt device. This causes the projected image to become unclear.

SUMMARY OF THE INVENTION In view of the problems of the conventional devices described above, an object of the present invention is to provide an electrophotographic engraving machine that allows easy inspection of the inside of the electrophotographic engraving machine without adversely affecting the accuracy of the optical system. It is something to do.

According to the present invention, the document table is fixedly provided on the upper surface of the main body of an electrophotographic engraving machine, a charging section, a developing section, and a fixing section are provided in the main body, and a convergent light beam is provided in the main body. a scanning box that supports an optical exposure system equipped with a transmission body and an odd-numbered reflecting mirror; and a scanning box that is moved forward at a constant speed from a charging section side toward a developing section side parallel to a document table and from the developing section side. An optical transport system that moves the photosensitive paper backward toward the charging unit, a charging transport system that guides the photosensitive paper to the charging unit, an exposure transport system that moves the photosensitive paper forward in the same direction as the optical exposure system, and a developer that guides the photosensitive paper to the developing unit. In an electrophotographic engraving machine that is provided with a conveyance system and a fixing conveyance system that guides photosensitive paper to a fixing section, the main body is pivoted to a lower housing and an upper side of the lower housing so as to be able to open and close. The lower housing includes a charging section, a developing section, a fixing section, and a housing.
A charging conveyance system, a developing conveyance system, and a fixing conveyance system are each supported, and the upper housing supports a document table, a scanning box, and an optical conveyance system, and the exposure conveyance system is moved in the same direction and at the same speed as the optical exposure system. two sets of roller devices that move and sandwich the photosensitive paper before and after the optical exposure system;
and a rotation imparting device that applies rotation to both roller devices at a circumferential speed equal to the moving speed of the optical exposure system and in a direction in which the photosensitive paper is sent out to the forward side of the optical exposure system as the scanning box moves forward; This is achieved by an electrophotographic engraving machine characterized in that a roller device is supported by a scanning box, and the rotation imparting device is connected between an upper housing and the roller device.

Hereinafter, one embodiment of the present invention will be described with reference to the drawings.

Referring to FIG. 1, the electrophotographic engraving machine has an electrophotographic engraving machine main body 1 with a document table 2 fixed on the upper surface, and a paper feed section 3 and a charging section 4 on one end side of the main body 1. A developing section 5 and a fixing section 6 are provided at the other end of the main body 1.

A scanning box 7 and a scanning box 7 are provided below the document table 2.
An optical conveyance system 8 is provided for moving the document forward from the charging section 4 side toward the developing section 5 side at a constant speed parallel to the document table 2 and moving it backward from the developing section 5 side toward the charging section 4 side. As shown in FIG.
supports an optical exposure system 9 having an illumination system 10, a convergent light transmitter 11, and an odd-numbered reflector 12.

The optical transport system 8 has two guide rails 13 extending parallel to the document table 2, and the scanning box 7 is slidably supported by the guide rails 13. The optical transport system 8 includes an optical system drive motor 14 . As shown in FIG. 3, both ends of a traction wire 15 are fixed to the scanning box 7, and the traction wire 15 is connected to the motor 1 at one end of the guide rail 13.
4 is wound around a main reel 16 driven by the guide rail 13, and is also wound around a rotatable turning reel 18 at the other end of the guide rail 13.

In FIG. 1, a paper feed roller 20 for feeding photosensitive paper 19 one by one is provided in the paper feed section 3, and a charging section entrance roller constituting a charging conveyance system is provided on the entrance side of the charging section 4. A developer unit 21 is provided, and a developer unit entrance roller device 22 that constitutes a developer transport system is provided on the entrance side of the developer unit 5.
A squeeze roller device 23 constituting a fixing conveyance system is provided on the exit side of the developing section 5, and a discharge roller device 24 is provided on the exit side of the fixing section 6.
The paper feed roller 20 is rotationally driven by a paper feed motor 25 provided in the paper feed section 3, and is rotated by a roller device 21.
24 are rotationally driven by a main motor 26.

As shown in FIG. 5, FIG. 6, and FIG.
The lower housing 27 includes a charging section 4, a developing section 5, a fixing section 6, a charging conveyance system 21, and a developing section 7. A transport system 22 and a fixing transport system 23 are each supported, and the upper casing 28 supports a document table 2, a scanning box 7, and an optical transport system 8. Furthermore, here, the paper feed section 3 is supported on the upper housing 28 side, but the paper feed section 3 may be supported on the lower housing 27.

An exposure transport system 29 is provided between the charging section 4 and the developing section 5 for moving the photosensitive paper 19 forward at twice the speed of the optical exposure system 9 in the same direction as the optical exposure system 9. As shown in detail in FIGS. 2 and 4, the exposure conveyance system 29 consists of two sets that move in the same direction and at the same speed as the optical exposure system 9 and sandwich the photosensitive paper 19 before and after the optical exposure system 9. It is comprised of roller devices 30 and 31, and a rotation imparting device 32 that applies rotation to both roller devices 30 and 31 at a circumferential speed equal to the moving speed of the optical exposure system 9 as the scanning box 7 moves forward.

The roller devices 30 and 31 include main rollers 33 and 34 located on the back side of the photosensitive paper 19, respectively, and a presser roller 3 that is pressed against the main rollers 33 and 34 by a spring (not shown) from the photosensitive side of the photosensitive paper 19.
It consists of 5,36. These main rollers 3
3 and 34 and press rollers 35 and 36 are each rotatably supported by the scanning box 7, and furthermore, the press rollers 35 and 36 are movable up and down.

A guide plate 37 for supporting the back side of the photosensitive paper 19 is provided between the roller devices 30 and 31.
This guide plate 37 is screwed to the scanning box 7. The optical exposure system 9 is configured to directly form an erect, equal-magnification real image on the photosensitive surface of the photosensitive paper 19 on the guide plate 37. In order to correctly form an erect life-size real image on the photosensitive surface of the photosensitive paper 19 on the guide plate 37,
It is preferable that the scanning box 7 as a whole and the converging light transmitting body 11 be configured so that their positions can be adjusted in the vertical direction.

Referring to FIG. 4, the rotation imparting device 32 includes a rack 38 attached to the upper housing 28 in parallel with the document table 2, and a pinion 3 that engages with the rack 38.
9, 40, and pinions 39, 40 are attached to main rollers 33, 34 via one-way clutches 41, 42, respectively. The pitch circle diameter of the pinions 39, 40 is the main roller 33, 34.
is equal to the diameter of the one-way clutch 4
1 and 42 are formed so as to transmit only the rotation of pinions 39 and 40 caused by the forward movement of the scanning box 7 to the main rollers 33 and 34. Therefore, scanning box 7
When the pinions 39 and 40 move backward from the developing section 5 side to the charging section 4 side, the rotation of the pinions 39 and 40 is caused by the rotation of the main roller 3.
3 and 34 are not transmitted.

A fixed guide plate 43 is disposed below the scanning box 7 between the charging section 4 and the developing section entrance roller device 22, and extends substantially parallel to the document table 2.
The front end (left end in FIG. 1) of the fixed guide plate 43 slopes upward toward the gap between the rollers of the roller device 22. Therefore, the front end of the photosensitive paper 19 held between the roller devices 30 and 31 is
Although it hangs downward until it reaches 2, it is guided by the fixed guide plate 43 and guided between the rollers of the roller device 22. Further, the rear end of the photosensitive paper 19 held between the roller devices 30 and 31 hangs downward when separated from the charging section 4, but is received by the fixed guide plate 43. The fixed guide plate 43 is attached to the lower housing 2
It is fixed at 7. The space below the fixed guide plate 43 can be used to store control circuit components (not shown).

Next, the operation of the apparatus of the above embodiment will be explained.

When a document is placed on the document table 2 and a start button (not shown) is pressed, a sheet of photosensitive paper 19 in the paper feed section 3 is fed to the charging section 4 side by the paper feed roller 20 and the developing section entrance roller device 21. . When the photosensitive paper 19 is detected by the start sensor 44 on the entrance side of the charging section 4, a voltage is applied to the charging section 4, and the photosensitive paper 19 passing through the charging section 4 is negatively charged.

In the scanning box 7, which is waiting at the right end position in the figure of the movement stroke, the front end of the photosensitive paper 19 is connected to the roller device 30.
Start moving forward before reaching . Therefore, after the scanning box 7 starts moving forward, the front end of the photosensitive paper 19 catches up with the roller device 30 and is held by the roller device 30. Note that the photosensitive paper 19 is connected to the roller device 30.
If the scanning box 7 is stopped when the photosensitive paper 19 is reached, the front end of the photosensitive paper 19 will abut against the roller device 30, making it easy to cause a jam phenomenon. However, with the above-described configuration, jam development can be prevented. Thus, the photosensitive paper 19 can be smoothly transferred to the roller device 30.

As the scanning box 7 moves forward, the roller device 30,
Since the main rollers 33 and 34 of 31 are given rotation at a circumferential speed equal to the moving speed of the scanning box 7, the photosensitive paper 19 is rotated at the scanning box 7 at the roller devices 33 and 34.
is transported at twice the speed of movement.

After the scanning box 7 starts moving forward, the lamp 45 of the optical exposure system 9 is turned on, and then, as the scanning box 7 moves forward, the photosensitive surface of the photosensitive paper 19 is exposed.

When the scanning box 7 reaches the left end position in the figure of the movement stroke, the left end detection switch 46 outputs a detection signal.
The lamp 45 is turned off and the scanning box 7 begins to move backward. If the rear end of the photosensitive paper 19 is held between the roller devices 30 and 31 when the scanning box 7 starts moving backward, the pinions 39 and 40 will rotate counterclockwise in FIG. Since the main rollers 33 and 34 rotate clockwise in FIG. 4 as the photosensitive paper 19 moves forward, the pinions 39 and 40 Rotational transmission between the main rollers 33 and 34 is interrupted by one-way clutches 41 and 42.

The photosensitive paper 7 is developed when passing through the developing section 5,
Next, the photosensitive paper 19 is
After some developer has been squeezed out from the photosensitive paper 1
9 is fixed and dried in the fixing section 6, and then guided to a paper discharging section (not shown) by a paper discharging roller device 24.

When an electrophotographic engraving machine is used for a long period of time, dust may accumulate inside the charging section 4 and developing section 5, and the squeezing roller device 23 and fixing section 6 may become dirty, so these should be inspected regularly. Cleaning is recommended.
When performing such inspections, cleaning, etc., the upper housing 2 may be pushed open upward as shown in FIG.

Since the optical exposure system 9 and the photosensitive paper exposure conveyance system 29 are supported on the upper housing 28 side, the distance relationship between the document table 2, the optical exposure system 9, and the exposure conveyance system 29 is as follows.
It is possible to accurately set the lower housing 27 and the upper housing 28 regardless of their positional relationship, and even after setting, the distance, positional relationship, etc. between them will not deviate due to the opening/closing operation of the upper housing 28. It never comes.

Note that when the optical transport system 8 is driven by the main motor 26 supported by the lower housing 27, when the upper housing 28 is opened, the optical transport system 8 is
In order to be able to break the connection between the main motor 26 and the main motor 26, it is necessary to use a gear train as a connection means, and as a result, the optical exposure system 9 etc. Although vibrations are likely to occur during movement, in the above embodiment, the drive motor 14 of the optical transport system 8 is provided in the upper housing 28 separately from the main motor 26, so such problems do not occur at all. do not have.

Although one embodiment has been described above, the present invention is not limited to only the aspects of the above embodiment.

As is clear from the above description, the electrophotographic engraving machine according to the present invention includes a main body of the electrophotographic engraving machine including a lower casing and an upper casing pivotally connected to the upper part of one side of the lower casing so as to be able to open and close. The lower casing supports a charging section, a developing section, a fixing section, a charging transport system, a developing transport system, and a fixing transport system, and the upper casing supports a document table, a scanning box, and an optical transport system. support,
Two sets of roller devices move the exposure conveyance system of the photosensitive paper at the same speed in the same direction as the optical exposure system and sandwich the photosensitive paper before and after the optical exposure system, and both roller devices move the exposure conveyance system of the photosensitive paper at the same speed in the same direction as the optical exposure system and sandwich the photosensitive paper before and after the optical exposure system. and a rotation imparting device that provides rotation at a circumferential speed equal to the moving speed of the optical exposure system and in a direction to feed the photosensitive paper toward the forward side of the optical exposure system.Both roller devices are supported by a scanning box, and the rotation imparting device Since the device is connected between the upper housing and the roller device, it is possible to easily inspect the inside of the electrophotographic engraving machine body without adversely affecting the accuracy of the optical system. It has the effect of making it possible.

[Brief explanation of drawings]

FIG. 1 is an overall schematic sectional view of an electrophotographic engraving machine showing an embodiment of the present invention, FIG. 2 is a schematic sectional view of the inside of a scanning box in the electrophotographic engraving machine shown in FIG. FIG. 4 is a perspective view showing the exposure transport system of the electrophotographic engraving machine shown in FIG. 1, and FIG.
FIG. 6 is a schematic cross-sectional view showing the electrophotographic engraving machine shown in FIG. 1 with the upper casing and lower casing separated. , FIG. 7 is a schematic cross-sectional view of the electrophotographic engraving machine shown in FIG. 1. 1...Electrophotographic engraving machine body, 2...Document stand, 3
...Paper feeding section, 4...Charging section, 5...Developing section, 6...
...Fixing unit, 7...Scanning box, 8...Optical transport system, 9
...Optical exposure system, 11 ... Focusing light transmission body, 12
...Odd-numbered reflector, 14...Optical system drive motor,
19...Photosensitive paper, 21...Charging section entrance roller device (charging conveyance system), 22...Development section entrance roller device (development conveyance system), 23...Squeezing roller device (fixing conveyance system), 24...Discharge Paper roller device, 26... Main motor, 27... Lower housing, 28... Upper housing, 29... Exposure conveyance system, 30, 31... Roller device, 32... Rotation imparting device.

Claims (1)

[Claims] 1. A document table is fixedly provided on the upper surface of the main body of an electrophotographic engraving machine, and a charging section, a developing section, and a fixing section are provided inside the main body, and a focusing light transmitting body and a focusing light transmission body are provided inside the main body. A scanning box that supports an optical exposure system equipped with an odd number of reflection mirrors, and a scanning box that is moved forward at a constant speed parallel to the document table from the charging section side toward the developing section side, and from the developing section side to the charging section side. an optical transport system that moves the photosensitive paper backward in the same direction as the optical exposure system; a charging transport system that guides the photosensitive paper to the charging section; an exposure transport system that moves the photosensitive paper forward in the same direction as the optical exposure system; and a development transport system that guides the photosensitive paper to the developing section. , and a fixing conveyance system for guiding photosensitive paper to a fixing section, wherein the main body is provided with a lower casing and an upper casing pivotally connected to an upper side of one side of the lower casing so as to be movable in opening and closing. The lower casing supports a charging section, a developing section, a fixing section, a charging transport system, a developing transport system, and a fixing transport system, and the upper casing supports a document table, a scanning box, and an optical transport system. The exposure transport system is supported by two sets of roller devices that move in the same direction and at the same speed as the optical exposure system and sandwich the photosensitive paper before and after the optical exposure system, and a a rotation imparting device that gives rotation to the roller device at a circumferential speed equal to the moving speed of the optical exposure system and in a direction in which the photosensitive paper is sent out to the forward side of the optical exposure system; the roller device is supported by a scanning box; . An electrophotographic engraving machine, characterized in that the rotation imparting device is connected between an upper housing and a roller device. 2. The electronic device according to claim 1, wherein the drive device for the optical transport system is supported by the housing separately from the drive devices for the charging transport system, the developing transport system, and the fixing transport system. Photo engraving machine.