JP2615758B2 - Image forming device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus such as a copying machine, and more particularly, to an image forming apparatus using a photosensitive recording medium.

[Prior Art] Conventionally, in an image forming apparatus using a photosensitive recording medium, it is conceivable that the photosensitive recording medium is unnecessarily exposed by opening and closing the opening and closing member before and after the apparatus power is turned on. Therefore, a control means is provided for controlling the conveyance of the photosensitive recording medium by a predetermined amount each time the apparatus power is turned on or when the opening of the main body cover is detected by a predetermined sensor. (Refer to Japanese Patent Application No. 62-186137) [Problem to be Solved by the Invention] However, in the above-described apparatus, the power is turned on and off.
The photosensitive recording medium is transported by the transporting unit by a predetermined amount regardless of the number of times the document is turned off or the opening / closing member is opened, so that the photosensitive recording medium is wasted without obtaining an output image.

[Object of the Invention] The present invention has been made to solve the above-described problem, and after the power of the apparatus is turned on, or after the opening of the opening / closing member is detected by the detecting means, the start instruction means is provided. An image forming apparatus that minimizes idle transport of the photosensitive recording medium by transporting the photosensitive recording medium by a predetermined amount by the transport unit only when operated, thereby eliminating wasteful consumption of the photosensitive recording medium. It is intended to provide.

[Means for Solving the Problems] To achieve this object, an image forming apparatus according to the present invention comprises:
After the power of the apparatus is turned on, or only when the start instruction unit is operated after the detection unit detects the opening of the opening / closing member, the conveyance unit conveys the photosensitive recording medium by a predetermined amount. It has control means for controlling.

[Operation] In the image forming apparatus of the present invention having the above configuration,
When the start instructing means on the operating member is operated after the power of the apparatus is turned on or after the opening of the opening / closing member is detected by the detecting means, the control means causes the conveying means to move the photosensitive recording medium by a predetermined amount. , And the latent image formation by the latent image forming means is started.

EXAMPLES Hereinafter, the present invention will be described more specifically with reference to examples.

FIG. 2 is a schematic sectional view of a light-sensitive pressure-sensitive copying machine capable of full-color copying. In addition, photosensitive paper that enables such copying (consisting of microcapsule paper and color-developed paper)
Has been proposed in JP-A-58-88739 and the like, and will not be described in detail here.

The photosensitive pressure-sensitive copying machine 40 is composed of a platen glass 2 and a platen cover 1 whose top plate part can be moved in the left-right direction as shown in FIG. Can be set in condition. A light source comprising a halogen lamp 3 extending in a direction perpendicular to the direction of movement of the platen glass 2 and a semi-cylindrical reflecting mirror 4 arranged so as to surround the lamp is fixed to the left and right upper portions of the copying machine 40. Light is irradiated in a line shape toward the base glass 2.

Therefore, the light emitted from the halogen lamp 3 can sequentially irradiate the entire surface of the document table glass 2 from the left end to the right end thereof by moving the document table glass 2 in the left-right direction. The light emitted from the light source passes through the transparent platen glass 2 and is reflected by the original placed thereon, but the upper surface of the platen glass 2 is designed to prevent the emitted light from leaking from other parts than the original. Is provided.

In order to use the light emitted from the halogen lamp 3 with high efficiency for irradiating the original, a reflector 5 is provided to the left of the light source.
Are disposed to reflect light that does not directly go to the original and use it again for irradiating the original.

A fan 6 and a louver 7 for introducing air from outside are provided on the right side of the halogen lamp. As a result, air is efficiently applied to the platen glass 2. Light emitted from the halogen lamp 3 and reflected from a document located on the document glass 2 passes through the filter 8 and enters the lens 9. The filter 8 changes the light transmission characteristic according to the sensitivity characteristic of the microcapsule paper 37, and adjusts the color tone of the copied image. The lens 9 is mounted on a lens mounting plate 10 so that a small angle adjustment with respect to the optical path is possible.

The light condensed by the lens 9 is turned by 180 ° by the two reflecting mirrors 11, and is imaged on the microcapsule paper 37 closely below the exposure table 19. The two reflecting mirrors 11 are fixed to the mirror mounting plate 12, and the adjustment of the optical path length and the focus are performed by finely adjusting the mounting position of the mirror mounting plate 12.

On the other hand, the long microcapsule paper 37 has a cartridge shaft.
The state wound around 14 is accommodated in a removable cartridge 13 disposed below the platen glass 2, and one end of the cartridge 13 reaches a winding shaft 25 via a number of rollers and a pressure developing device 20. I have.

That is, the microcapsule paper 37 that has exited from the lower part of the cartridge 13 is guided by the feed roller 15 and the die roller 17, passes below the exposure table 19, and is supplied to the pressure developing device 20. Thereafter, the microcapsule paper 37 that has passed through the pressure developing device 20 is separated from the release roller 23 and the meandering adjustment roller.
After being guided to 24, it is wound on a winding shaft 25. The unexposed microcapsule paper 37 after leaving the cartridge 13 is kept unexposed by the light-shielding cover 16.

The transport speed of the microcapsule paper 37 is controlled to be constant by the capsule paper feed re-roller 22 and is matched with the moving speed of the platen glass 2. A latent image of a predetermined line of the document is sequentially formed.

In addition, a developing paper cassette 32 that accommodates a developing paper 38 of a cut paper type is provided below the pressure developing device 20,
The developed paper 38 is taken out one by one by a half-moon roller 33, and the leading end is aligned by a developed paper roller 34 and a registration gate 35, and then conveyed to a paper carry-in port of the pressure developing device 20.

Therefore, the microcapsule paper 37 and the developing paper 38 are supplied to the pressure latent image device 20 in a state where they are in close contact and integrated.
The pressure developing device 20 includes a small-diameter roller 21 and a backup roller 31. A small-diameter roller in which the microcapsule surface on which the latent image of the microcapsule paper 37 is formed and the developer-applied surface of the color developer paper 38 come into contact with each other in a state in which
The pressure is applied between 21 and the backup roller 31. The unexposed microcapsules are destroyed by this pressure, and an image is formed on the developing paper 38.

Microcapsule paper 37 and developer paper coming out of the pressure developing device
The microcapsule paper 37 is conveyed by the capsule paper feed roller 22 and the microcapsule paper 37 is moved upward by the peeling roller 23.
Are separated in orthogonal directions. After the color is accelerated by the heat fixing device to form an image on the color developing paper 38, the color developing paper 38 is conveyed to the paper discharge tray 27 with the image side up. The heat fixing device includes a hollow heat roller 29 having a heater 30 therein and a developing paper feed roller 28.

The separated microcapsule paper has a meandering adjustment roller 24
Is wound around the winding shaft 25.

The operation of the embodiment configured as described above will be described below.

Now, after the platen cover 1 is opened and a document is placed on the platen glass 2, a start button (not shown) among the switch buttons 52 (see FIG. 1) provided on the operation panel 51 is pressed. When pressed, the platen glass 2 first moves rightward in FIG. 2 and stops at a position where the left end of the platen glass 2 faces the light source. Thereafter, while the halogen lamp 3 is turned on, the original table glass 2 is moved to the left. After the light emitted from the halogen lamp 3 is reflected by the original, a filter 8, a lens 9 and two reflecting mirrors are provided.
After being reflected by 11, an image is formed on microcapsule paper 37 located below exposure table 19. At this time, the microcapsule paper 37 is moved leftward on the exposure table 19 at the same speed as the moving speed of the document table glass 2, so that an image on the document is formed on the microcapsule paper 37 as a latent image. .

With the movement of the platen glass 2 to the left, the halftone roller 33 takes out the developed paper 38 from the developed paper cassette 32 and supplies it to the pressure developing device 20 in a state of being superposed on the exposed microcapsule paper 37, Microcapsule paper
The latent image on 37 is developed and transferred to a developed paper 38.

Thereafter, the developed paper 38 is thermally fixed by a thermal fixing device, and then discharged out of the copying machine 40. On the other hand, the microcapsule paper 37 that has passed through the pressure developing device 20 is sequentially wound around the winding shaft 25. When the platen glass 2 has moved to the position where the right end thereof faces the light source, copying of the document is completed and the halogen lamp 3 is turned off.

FIG. 1 is a block diagram showing the electrical configuration of the entire apparatus of the present invention.

As a means for controlling the entire apparatus, a one-chip microcomputer 50 (hereinafter, microcomputer) is employed. The microcomputer 50 has a built-in ROM and RAM.

The detection means for detecting the opening of the body cover is sensors
Included in 54 and not shown. The microcomputer 50 is connected to the operation panel 51, the sensors 54, and the actuator driving unit 55 by wiring and a harness on the circuit. The latent image forming means is a halogen lamp 3, a reflecting mirror.
4, a lens 9 and the like, and the developing means is a pressure developing device.
20 and a heater 30, and various rollers.The transporting means is composed of rollers such as a Tyco roller 17, a nip roller 18, etc. The means is included in the sensors 54, and the start instruction means is constituted by a start button among the switch buttons 52 provided on the operation panel 51.

As a result, detection of depression of each switch button among the switch buttons 52 on the operation panel 51 and blinking of the display LED 53 and driving of the actuator 56 such as a main motor, a solenoid, and a halogen lamp by outputting a signal to the actuator drive unit 55 are performed. The sensor 54 such as a paper feed sensor is detected.

A main body cover (not shown) is disposed in front and rear of the image forming apparatus of the present invention shown in FIG. 2, and each part can be adjusted by opening the main body cover when the apparatus is turned off or on. . When the main body cover is opened, the microcapsule paper 37 is exposed to external light.
Therefore, it is necessary to feed the microcapsule paper 37 by a predetermined amount irrespective of the original exposure. As a result, in the image forming apparatus of this embodiment, the start button in the switch buttons 52 on the operation panel 51 is first pressed after the microcomputer 50 turns on the apparatus power or after the opening of the main body cover is detected by the detecting means. Is detected, the control is performed so that the capsule paper 37 is fed by a predetermined amount irrespective of the exposure of the original, and then the above-described latent image forming process is started.

[Effects of the Invention] As is apparent from the above description, according to the present invention, the start instruction on the operation member after the power of the device is turned on or after the opening / closing member is detected by the detecting means. Only when the unit is operated, the control unit controls the transport unit to transport the photosensitive recording medium by a predetermined amount, and subsequently, the latent image formation by the latent image forming unit is started. By performing the idle conveyance of the photosensitive recording medium only immediately before the operation is performed, the idle conveyance of the photosensitive storage medium can be minimized, and there is an effect of eliminating wasteful consumption of the photosensitive recording medium.

[Brief description of the drawings]

1 and 2 show an embodiment embodying the present invention. FIG. 1 is a block diagram of control means of the whole apparatus of the present invention, and FIG. 2 is a sectional view of the present invention. In the figure, 37 is a microcapsule paper, 50 is a microcomputer, 51 is an operation panel, and 52 is switch buttons.

Claims (1)

(57) [Claims] A latent image forming means for forming a latent image on a photosensitive recording medium; a developing means for developing the latent image; and a conveying means for conveying the photosensitive recording medium from the latent image forming means to the developing means. An opening / closing member provided on a frame containing the photosensitive recording medium, the latent image forming unit, the developing unit, and the transporting unit; a detecting unit for detecting opening of the opening / closing member; In the image forming apparatus provided with start instruction means for causing the start instruction means to be first instructed after the power of the apparatus is turned on or after the detection of the opening of the opening / closing member by the detection means, An image forming apparatus, comprising: a control unit that controls the conveyance unit to convey the photosensitive recording medium by a predetermined amount.