JPH02304577A - Electrophotographic device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] 1. This invention applies to charging, exposure, development, transfer, cleaning, etc. of printers, copying machines, facsimile machines, etc.
The present invention relates to an electrophotographic apparatus that repeatedly performs an electrophotographic fixing process to form an image on paper.

Conventionally, in this type of apparatus, a supply kit is integrally formed into a box shape, including a toner cartridge of a developing means, a waste toner cartridge and a cleaning section of a cleaning means, and a charging means.

In addition, a part of the supply kit is provided with an attaching portion that is detachably attached to the main body of the apparatus and protrudes apart from the integrated structure of the supply kit.

The engagement hole of the attachment part of the supply kid is rotatably provided on the attachment shaft deep inside the device main body, and
It is provided so that it can be attached and detached at a predetermined rotational position.

The problem that Tetsu is trying to solve However, conventional supply kits are entirely cylindrical, thick, and large, making them unsuitable for the thinness of the device itself. In addition, the supply kit mounting part is attached to the mounting shaft deep inside the device, which is difficult to install.
There were problems with ease of use, such as difficulty in mounting.

SUMMARY OF THE INVENTION Accordingly, it is an object of the present invention to adapt a supply kit to the thinness of the device body and to improve the operability of the supply kit.

In order to achieve the above object, the present invention includes a toner cartridge of a developing means in an apparatus main body.

An electrophotographic apparatus in which a supply kit is detachably provided, which is integrally formed with a waste toner cartridge of a cleaning means, a cleaning section, and a charging means.

One end of the holder is rotatably provided in the apparatus main body, and the supply kit is arranged between the toner cartridge disposed on one side across an intermediate space, and the supply kit disposed on the other side parallel to the toner cartridge. A unit comprising a cleaning means and a charging means.

The present invention is characterized in that it is composed of the unit and a connecting portion projecting outward on both sides in the 111 direction of the toner cartridge, and that the connecting portion of the supply kit is detachably provided in the holder groove of the holder.

Function: Therefore, the supply kit is attached to and detached from the holder of the main body of the apparatus using the connecting portion as a guide.

Embodiments of the present invention will now be described with reference to the drawings.

FIG. 3 is a schematic diagram of the overall structure of the internal mechanism of the laser printer according to the present invention. What is indicated by the reference numeral 10 in the figure is the main body of the apparatus. The device main body 10 is composed of an earth structure 10a and a lower structure 10b.

The earthen structure 10a is attached to the lower structure 10b by a shaft 11 so as to be openable and closable. Inside the main body 10 of the apparatus, a photoreceptor 12 is provided at the center.

Around the photoreceptor 12, charging means 13, developing means 14, and transfer means 15 are arranged in order in the direction of its rotation axis indicated by an arrow.
- Arrange electrophotographic process means other than the optical writing means and fixing means of the cleaning means 16. A fixing means 17 is arranged on the opposite side of the photoreceptor 12 across the cleaning means 16. An optical writing means 18 is arranged below these other electrophotographic processing means, and a paper feed cassette 19 is further arranged below the optical writing means 18.

The paper fed by the paper feed roller 2o from the paper feed cassette 19 makes a large U-turn on the side of the developing means 14, and is conveyed to the upper side of the photoreceptor 12 by the registration roller pair 21. be done. Photoreceptor 12
is driven to rotate counterclockwise as shown by the arrow, and at this time, the surface is uniformly charged by the charging means 13, and is irradiated with laser light from the optical writing means 18 to form an electrostatic latent on the photoreceptor 12. An image is formed. This latent image is made visible by the toner as it passes through the developing means 14. Then, this visible image is transferred by the transfer means 15 to the lower surface of the paper that has been conveyed above the photoreceptor 12. The transferred paper is attracted to the conveyance guide 23 by the suction action of the suction fan 22, guided by the conveyance guide 23, and conveyed between the fixing roller 17a and the pressure roller 17b of the fixing means 17, where it is visible. The image is fixed. And fixing means 17
The paper that has come out is further transferred to the paper ejection section 2 by the paper ejection roller 24
5, and is guided by a paper discharge guide 26 and stacked on a paper discharge tray 27.

By the way, in the laser printer according to this invention.

As shown in Figure 3, a supply kit 3 is installed inside the main body 1o of the device.
0 is removably attached to the supply kit holder 31, and specifically configured as shown in FIGS. 1 and 2.

FIG. 1 shows a perspective view of the supply kit 30 and the supply kit holder 31 separated from each other, and FIG. 2 shows a side view of the supply kit 30 mounted on the supply kit holder 31.

The supply kit 30 is integrally formed by the toner cartridge 32 of the developing means 14, the waste toner cartridge 33 and cleaning section 34 of the cleaning means 16, and the charging means 13. The cleaning means 16 is constructed by assembling the cleaning section 34 into the waste toner cartridge 33 and is provided integrally with the charging means 13 to constitute one unit.

In the supply kit 30, the toner cartridge 32 of the developing means 14 is arranged on one side with an intermediate space in between, and the cleaning means 16 and the charging means 13 are arranged on the other side.
The unit is constructed by arranging the unit and connecting both units with connecting parts 35.

The connecting portions 35, 35 are connected to the toner cartridge 32.
and are provided on both sides of the waste toner cartridge 33 in the width direction so as to protrude outward.

The supply kit holder 31 is composed of holder portions 36 facing each other on one side and a holder shaft 37 connecting these holder portions.

The holder parts 36 are formed into an elongated box shape with a cross section, and have holder grooves 38 opened in the longitudinal direction on the negative side. One end of the holder portions 36, 36 has openings 38a, 38a for the holder grooves 38, 38, and the other end has openings 38a, 38a.
A holding piece 39 is provided.

The holding piece 39 is provided perpendicularly to the openings of the holder grooves 38 and on the opening side and the groove bottom side. Then, with the holder grooves 38 and 38 facing each other, the holder parts 36 and 36 are
are arranged on both sides at a predetermined interval, and a holder shaft 37 is horizontally suspended between the holder parts 36, and both ends of the holder shaft 37 are passed through and fixed to the holding piece 39. Then, the holder shaft 37 is rotatably attached to the frames 40, 40 in the apparatus main body 10, and the supply kit holder 31 is formed to be vertically movable as shown by the arrow.

Further, one end of a coil spring 41 is pressed against the holder portions 36, 36 to bias it toward the upper structure 10a. The coil spring 41 is wound around a shaft 42 provided on the frame 40, and the other end is hooked onto the frame 40.

Therefore, the supply kit 30 is connected to the supply kit holder 31 through the inlets 38a and 38 as shown by the arrow.
The connecting portions 35, 35 are inserted into the holder grooves 38, 38 as guides from a to attach the holder.

The supply kit holder 31 holding the supply kit is held in a substantially horizontal state within the apparatus main body 10 during normal use with the upper structure 10a closed as shown in FIG.

Then, to replace the supply kit 30, the upper structure 1
After opening 0a, as shown in FIG. 2, the supply kit holder 31 is rotated about the shaft 37 to support the supply kit holder 31 at an angle indicated by the chain line, and the supply kit 30 is attached and detached in the direction of the arrow. In the supply kit 3o, the toner cartridge 32 and the waste toner cartridge 33 are arranged on both sides, and the connecting part 35 is arranged to include these large parts, so that the necessary precision of parts is obtained and the overall balance is improved, making it easier to replace. Easier to control time.

Effects of the Invention According to the present invention, connecting portions are provided on both sides of the supply kit in the width direction so as to protrude outward, and the connecting portions can be used as guides to attach and detach the supply kit to the main body of the device, thereby eliminating the need for separate attachment portions. Therefore, it can be made smaller and thinner as a whole, and can be adapted to the preference for thinness of the main body of the device.

In addition, the connecting portion is easy to see and easy to install, and the operability of the supply kit can be improved.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is an exploded perspective view of a supply kit and supply kit holder provided in a laser printer according to the present invention, FIG. 2 is a side view of the supply kit holder installed, and FIG. FIG. 2 is a schematic configuration diagram of the entire internal mechanism.

10...... Apparatus body 13... Charging means 14... Developing means 16... Cleaning means 30. ...
..... Supply kit 31 ..... - Supply kit holder 32 ..... Toner cartridge 33 ..... Waste toner cartridge 34
......Cleaning section 35...
...Connection part 36...Holder

Claims (1)

[Scope of Claims] An electrophotographic apparatus in which a supply kit integrally formed with a toner cartridge of a developing means, a waste toner cartridge and a cleaning section of a cleaning means, and a charging means is removably provided in the apparatus main body. , one end of the holder is rotatably provided in the device main body, and the supply kit is arranged on one side of the toner cartridge across an intermediate space, and on the other side parallel to the toner cartridge. The supply kit is composed of a unit including the cleaning means and the charging means, and a connecting portion protruding outward from both sides of the toner cartridge in the width direction, and the connecting portion of the supply kit is detachably provided in the holder groove of the holder. An electrophotographic device.