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Image forming apparatus and processing cartridge

An image and latent image carrier technology, which is applied in corona discharge devices, electric recording technology using charge patterns, equipment for electric recording technology using charge patterns, etc., can solve problems such as uneven density and unstable toner amount , to achieve the effect of inhibiting film formation

Inactive Publication Date: 2015-06-10
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When filming occurs on the surface of the latent image carrier, the amount of toner per unit area on the latent image carrier becomes unstable at the time of development, resulting in occurrence of density unevenness

Method used

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  • Image forming apparatus and processing cartridge
  • Image forming apparatus and processing cartridge
  • Image forming apparatus and processing cartridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0079] Hereinafter, a first embodiment of the photoreceptor cleaning device 15 (hereinafter referred to as "Embodiment 1") will be described.

[0080] image 3 Shown is an enlarged side explanatory view of the vicinity of the end in the longitudinal direction of the cleaning blade 15a included in the photoreceptor cleaning device 15 of the first embodiment.

[0081] Such as figure 1 and image 3 As shown, the cross-sectional shape of the holding member 15a2 in the short-side direction perpendicular to the long-side direction is formed into a substantially L-shape.

[0082] In addition, such as image 3 As shown, a supporting portion 15a21 and a bending portion 15a22 are formed on the holding member 15a2. The support portion 15a21 (fixed portion) of the holding member 15a2 causes the tip of the blade-shaped member 15a1 to protrude toward the photoreceptor 11, and the blade-shaped member 15a1 is cantilevered on its surface.

[0083] Specifically, the squeegee-shaped member 15a1 is adher...

Embodiment 2

[0099] Hereinafter, a second embodiment of the photoreceptor cleaning device 15 (hereinafter referred to as "Embodiment 2") will be described.

[0100] Figure 7 Shown is an enlarged side explanatory view of the cleaning blade 15a included in the photoreceptor cleaning device 15 of the second embodiment. Figure 8 Yes Figure 7 A partial enlarged perspective view of one end in the longitudinal direction of the cleaning blade 15a is shown. In addition, FIG. 9 is an explanatory diagram of the manufacturing method of the cleaning blade 15a of the second embodiment, and FIG. 10 is an explanatory diagram of another manufacturing method. In FIG. 9 and FIG. 10, the detailed part of the cleaning blade 15a is simplified.

[0101] The cleaning blade 15a of the second embodiment is different from the cleaning blade 15a of the first embodiment described above mainly in that the blade-like member 15a1 is not provided in the entire area in the longitudinal direction of the support portion 15a21....

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PUM

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Abstract

An image forming apparatus includes a latent image bearer, an electric charging member to electrically charge the latent image bearer uniformly while forming an electric charging nip therebetween by contacting the latent image bearer. A value obtained by dividing a moment of inertia of area of the latent image bearer by the cube of length thereof ranges from about 0.000058 [mm] or more to about 0.000145 [mm] or less. A width of the electric charging nip in a direction of rotation at longitudinal ends of the latent image bearer is larger than that at a longitudinal center thereof. A difference between the width of the electric charging nip in the direction of rotation at the longitudinal ends of the latent image bearer and that at the longitudinal center thereof is larger than an amount of deformation of the latent image bearer generated during rotation at the longitudinal center thereof.

Description

Technical field [0001] The present invention relates to image forming apparatuses such as copiers, facsimile machines, printers, etc., and a process cartridge used in the image forming apparatus. Background technique [0002] Such an image forming apparatus generally uses a charging mechanism to charge the surface of an image carrier such as a photoreceptor to a desired uniform potential, and irradiate light on the charged surface to form an electrostatic latent image. Toner adheres to the electrostatic latent image to form a toner image. Then, the toner image on the latent image carrier formed in this way is transferred to the recording material by means of an intermediate transfer body, or directly transferred to the recording material, and the toner image is formed on the recording material. Image. The toner remaining on the surface of the latent image carrier after the toner image is transferred is removed by the cleaning mechanism. [0003] The configuration described in Pa...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/02G03G21/18G03G15/00
CPCG03G15/0275G03G15/0233G03G21/0029G03G15/0258G03G15/0291G03G21/1814
Inventor 关秀康羽鸟聪深尾刚川岛雄太
Owner RICOH KK