Process cartridge and image forming apparatus

A technology for processing cartridges and images, which is applied in the direction of electric recording process applying charge pattern, equipment of electric recording process applying charge pattern, electric recording technique, etc., to achieve the effect of suppressing deflection, improving position accuracy and reducing deviation

Inactive Publication Date: 2008-11-12
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] However, the technologies described in the above-mentioned documents cannot solve the above-mentioned existing problems.

Method used

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  • Process cartridge and image forming apparatus
  • Process cartridge and image forming apparatus
  • Process cartridge and image forming apparatus

Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0108] FIG. 1 is a schematic vertical sectional view of a process cartridge and other processing equipment installed at a predetermined position within the main body of an image forming apparatus. The process cartridge 1 shown here is provided with an image carrier 2 made of a drum-shaped photoreceptor and a developing unit 3 as an example of a rotary unit, and the image carrier 2 and the developing unit 3 are detachably connected to form a integration. The developing unit 3 is provided with a developing roller 4 and a unit body 6. The developing roller 4 is arranged as an example of a rotating body to face the image carrier 2. The unit body 6 supports the shaft 5 of the developing roller 4 so that It can be swiveled. The shaft 5 can be integrally formed with the developing roller 4 or connected integrally with the developing roller 4 . The unit body 6 is provided with a developing casing 7 in which dry developer D is accommodated, and the developing roller 4 is arranged in ...

no. 2 example

[0138] The second embodiment is also described with reference to FIG. 1. When forming an image, the image carrier 2 is driven to turn counterclockwise as shown in FIG. The polarity is charged, and the writing light L is emitted from an exposure device (not shown) to irradiate the charged surface of the image carrier 2, so that an electrostatic latent image is formed on the image carrier 2.

[0139] On the other hand, the developing roller 4 that drives the developing unit 3 rotates clockwise as shown in FIG. The electrostatic latent image on the body 2 is developed and visualized as a toner image.

[0140] The transfer material P is supplied from a paper feeding device (not shown), and is transported in the arrow A direction. The toner image is transferred onto the transfer material P by the action of the transfer roller 13 . After the transfer material P is detached from the image carrier 2, the toner image is fixed on the transfer material P through a fixing device (not sh...

no. 3 example

[0181] 16 is a right side view showing a schematic internal structure of a color printer 101 as an electrophotographic image forming apparatus according to a third embodiment of the present invention. An image forming unit 103 , an optical writing unit 104 , a paper feed cassette 105 , a fixing device 106 , and the like are housed in an apparatus main body 102 of the color printer 101 .

[0182] The image forming section 103 is constituted by four image forming sections 107Y, 107M, 107C, 107K, an intermediate transfer unit 108 located below the image forming sections 107, a secondary transfer bias roller 109, and the like. Y, M, C, and K in the symbols represent yellow, magenta, cyan, and black, respectively.

[0183] The four image forming units 107Y, 107M, 107C, and 107K form toner images of different colors. The four image forming sections 107Y, 107M, 107C, and 107K have the same structure, and each consists of a photoreceptor assembly 110, and a charging roller 111 arrang...

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PUM

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Abstract

The invention relates to a processing caddy and an image forming device provided with the processing caddy, wherein an image carrying body is in locating connection with a developing component through a positioning element; a revolving body gear is fixed on the shaft of a developing roller of the developing component; an idler wheel is supported on the component body of the developing component through an idler shaft and can revolve freely; the revolving body gear is meshed with the idler wheel; a body gear, which is supported on the body of the image forming device and can revolve freely, is meshed with the idler wheel; the revolving of the body gear is transferred to the developing roller through the idler wheel and the revolving body gear. Through the positioning element 35 holding the idler wheel, idler shaft vibration caused by the force applied on the idler wheel by the body gear when the body gear revolves can be prevented.

Description

technical field [0001] The present invention relates to a process cartridge and an image forming apparatus provided with the process cartridge. Background technique [0002] Process cartridges and image forming apparatuses equipped with such process cartridges are known, for example, refer to Patent Document 1. Examples of the image forming apparatus include electronic copiers, printers, facsimile machines, and multifunction machines. Wherein, there is a rotary assembly, such as a developing assembly or a cleaning assembly. The rotator assembly includes a rotator composed of, for example, a developing roller or a cleaning brush, the rotator is arranged to face the image carrier, and the shaft of the rotator is supported so as to be rotatable around the assembly body. [0003] In the process cartridge constructed as described above, the rotator gear is fixed to the rotator shaft, and at least one idler gear is supported to be rotatable relative to the assembly body via the ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G21/18G03G15/08
Inventor 泷川润也
Owner RICOH KK
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