JPH0334765Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field The present invention relates to a surface treatment device for a flat moving object that reciprocates, and particularly to a developing and cleaning processing device in an electrophotographic apparatus using a flat photosensitive plate.

Background Art An electrophotographic device using this type of flat photosensitive plate is
For example, as shown in FIG. 1, there is a latent image forming section 1 of a subject to be copied such as a still image on a CRT, a developing section 2 that attaches a predetermined resin toner on the latent image and develops it, and a resin on the developed latent image. a transfer unit 3 that transfers toner onto recording paper;
It consists of a cleaning section 4 for removing residual resin toner after transfer, and copies are obtained by reciprocating a flat photosensitive plate 5 between these processing sections. Since it is easy to form a latent image and to adjust the position of the transfer onto recording paper, it is suitable for multicolor electronic copying. However, in this way, the flat photosensitive plate 5 is moved back and forth between the latent image forming section 1 and the transfer section 3, and during the movement, the rotating roller is moved up and down from the bottom side of the photosensitive plate to deposit resin toner on the surface of the photosensitive plate. ,
Alternatively, it is difficult to set the operation timing to peel off the resin toner remaining on the surface of the photosensitive plate, which not only requires complicated sequence control, but also causes uneven development and cleaning residue due to timing deviation, making it difficult to reproduce good color copies. There were times when I couldn't get it.

DISCLOSURE OF THE INVENTION Therefore, the present invention was proposed in view of the above-mentioned problems, and is a method for reliably developing and cleaning a moving object such as a reciprocating flat photosensitive plate without causing any timing lag during its movement. An object of the present invention is to provide a surface treatment device for a moving object that undergoes surface treatment.

That is, the surface treatment device for a flat moving object according to the present invention is rotatably attached to a lever support rod of a cam follower that is disposed in the path of the flat moving object and is in contact with a cam attached to the front and rear of the moving object. The lever is engaged with and held by a spring having a predetermined elastic force. Therefore, when a moving object travels on an outward path in one direction, the processing device, which is engaged by a spring due to the rotation of the lever of the cam follower, tilts around the lever support rod, moves away below the moving surface, and waits. do. On the other hand, on the return trip in the opposite direction, the lever of the cam follower rotates in the opposite direction to push the processing device upward and bring it into elastic contact with the moving object with a predetermined elastic force by the spring. Therefore, the drive timing of the processing device can be set directly in accordance with the movement of the moving object, and the position on the reciprocating path can be regulated.Moreover, since the processing device is pressed against the moving object with a predetermined elastic force during treatment, the developing Excellent effects such as reliable processing and cleaning can be obtained.

The best form for implementing ideas Embodiments of the present invention will be described in detail below with reference to the drawings.

FIG. 2 is a surface treatment apparatus for a flat moving object according to the present invention, and is a cross-sectional view of a cleaning device 7 for cleaning resin toner remaining and adhering to the surface of a flat photosensitive plate. That is, in the figure, reference numeral 8 denotes a flat photosensitive plate, which is attached via a photosensitive plate holder 10 to a conveying device 9 that reciprocates from front to back with respect to the paper surface. Although not shown, the cleaning device 7 includes a rotating roller 11 having a so-called magnetic brush structure, the outer periphery of which is covered with a non-magnetic sleeve and a group of magnets arranged inside, and a cleaning case 12 that houses the rotating roller 11. Reference numeral 13 denotes a support rod for the case 12, which is disposed at the lower end of the cleaning case 12 with its center of gravity shifted. Therefore, the cleaning case 12 rotates around the support rod 13 by its own weight and is held in position by coming into contact with a stopper 14 provided on the side surface of the case. A lever 15 is rotatably attached to the support rod 13 of the cleaning case 12, and a cam follower 16 is attached to the tip thereof. 17 is a cam attached to the conveying device 9 of the photosensitive plate 8 facing the cam follower 16;
It is formed in an elongated shape that protrudes front and rear in the moving direction of the conveyance device 9. Further, 18 is a spring engaged between the cam lever 15 and the cleaning case 12, and when the cam 17 comes into contact with the cam follower 16 and presses the cam follower 16 against its elasticity,
The cleaning case 12 rotates around a support rod 13 and comes into contact with an upper positioning stopper (not shown), so that the magnetic brush 11' of the rotating roller 11 comes into circumferential contact with the surface of the photosensitive plate 8. 19 is
This is a micro switch for driving the rotary roller 11 disposed near the end of the cam lever 15.

Next, the operation of the cleaning device 7 having such a configuration will be explained.

First, FIGS. 3a and 3b show the arrangement of each part on the forward path of the flat photosensitive plate 8 to the conveying device 9. The cleaning device 7 is operated by the cam follower 16 when the photosensitive plate 8 is not on the device. is in a free state, therefore, the magnetic brush 1 of the rotating roller 11
1' is spaced downward from the moving surface of the photosensitive plate 8 by a predetermined distance l (FIG. 3a).

Next, as shown in FIG.
When the cleaning case 12 is pressed from the left side, that is, the cam lever 15 is pressed in a direction in which the spring 18 is pressed against the spring 18, the cleaning case 12 is pressed through the spring 18, and although the cleaning case 12 is pressed clockwise around the support rod 13, the stopper 14 Since the cleaning device 7 is held in the same position, the cleaning device 7 maintains the same posture. Therefore, the upper end of the rotating roller 11 is maintained below the moving surface of the photosensitive plate 8 by a predetermined distance l.

Next, FIGS. 3c and d show the state of the flat photosensitive plate 8 on its return journey. When the photosensitive plate 8 is not on the top surface of the device, cleaning is performed in the same manner as in FIG. 3a. The rotating rollers 11 of the device are located at the bottom (FIG. 3c). When the photosensitive plate 5 approaches from the right side and the cam 17 of the conveyance device 7 comes into contact with the cam follower 16, the cam lever 15 rotates under the pressure of counterclockwise rotation, and the cleaning device 7 is rotated by the elastic force of the spring 18. It is pulled by. Therefore,
The cleaning case 12 rotates around the support rod 13, pushes up the upper end of the rotating roller 11, and brings the magnetic brush 11' into contact with the surface of the photosensitive plate 8.
Then, a micro switch disposed near the end of the cam lever 15 is turned on, the rotating roller 11 rotates, and the resin toner adhering to the surface of the photosensitive plate 8 is removed and cleaned.

As described above, according to the present invention, surface treatments such as development and cleaning can be performed timely and reliably while a flat moving object such as a reciprocating photosensitive plate is moving. Moreover, since the drive control is directly driven by a cam attached to the moving object conveyance device, excellent effects such as simpler and more accurate control can be obtained compared to conventional sequence control.

[Brief explanation of drawings]

Fig. 1 is an example of a surface treatment device for a flat moving object, and is a block diagram showing the process of an electrophotographic device using a flat photosensitive plate. Fig. 2 is an example of the present invention, and is a cleaning device shown in Fig. 1. FIG. 3 is a cross-sectional view of the main part showing the operating state of FIG. 2. 7...Surface treatment device (cleaning device), 8
... flat moving object (photosensitive plate), 9 ... conveyance device,
11... Operating part (rotating roller), 12... Cleaning case, 15... Cam lever, 16... Cam follower, 17... Cam, 18... Spring.

Claims (1)

[Claims for Utility Model Registration] A surface treatment device for a flat moving object that reciprocates linearly, comprising: a cam disposed in a reciprocating path of the moving object and attached to a conveying device for the moving object; A rotatably supported cam lever having a cam follower circumferentially driven by the cam is engaged with the cam lever by a spring having a predetermined elastic force, and is rotatably supported on the shaft of the cam lever. and an actuating part, and the actuating part is separated from the moving surface on the forward path of the moving object, and the actuating part is brought into contact with the moving surface on the returning path of the moving object. Features: Surface treatment equipment for flat moving objects.