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Image forming device and process 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: 2017-06-20
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 device and process cartridge
  • Image forming device and process cartridge
  • Image forming device and process cartridge

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

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

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

[0081] like figure 1 and image 3 As shown, the cross-sectional shape of the holding member 15 a 2 in the short-side direction perpendicular to the long-side direction is formed in a substantially L-shape.

[0082] In addition, if image 3 As shown, a support 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 supports the blade-shaped member 15a1 cantilevered on its surface such that the tip portion of the blade-shaped member 15a1 protrudes toward the photoreceptor 11 .

[0083] Specifically, the scraper-shaped...

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 15 a included in the photoreceptor cleaning device 15 of the second embodiment. Figure 8 Yes Figure 7 It is a partially enlarged perspective view of one end in the longitudinal direction of the cleaning blade 15a shown. In addition, FIG. 9 is an explanatory diagram of a manufacturing method of the cleaning blade 15a of Example 2, and FIG. 10 is an explanatory diagram of another manufacturing method. In FIG. 9 and FIG. 10, the detail part of the cleaning blade 15a is simplified and shown.

[0101] The cleaning blade 15a of the second embodiment is mainly different from the cleaning blade 15a of the first embodiment above in that no blade-shaped member 15a1 is provided over the entire lengthwise direction of the supporting portion 15a21. In the cleani...

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PUM

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Abstract

The subject of the present invention is an image forming apparatus and a process cartridge. The present invention provides an image forming apparatus capable of suppressing filming at axial end portions of a latent image carrier by using a latent image carrier that is more easily bent than before. In the image forming apparatus, as the photoreceptor (11), while the value of the area moment of inertia divided by the cube of the length is in the range of 0.000058 mm or more and 0.000145 mm or less, a charging roller (12a) attached to the charging roller (12a ) on the surface of the charging cleaning roller (12b) that removes foreign matter on the surface of the photoreceptor (11), and the charging nip width that is the length of the charging nip in the surface moving direction of the photoreceptor (11) is the end charging nip at the end of the longitudinal direction The holding width is wider than the central portion charging nip width of the longitudinal direction central portion of the photoreceptor (11), and the difference between the end portion charging nip width and the central portion charging nip width is larger than that of the photoreceptor (11) during driving. ) has a large bending amount at the central portion.

Description

technical field [0001] The present invention relates to image forming apparatuses such as copiers, facsimile machines, and printers, and process cartridges used in the image forming apparatuses. Background technique [0002] Such an image forming device generally charges the surface of an image carrier such as a photoreceptor to a desired uniform potential by a charging mechanism, and irradiates 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 after being directly transferred to the recording material, the toner image is formed on the recording material. Image. The toner remaining on the surface of the latent image carrier after the transfer of the toner image is removed by the cleaning mechanism. [0003] In the structure describ...

Claims

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Application Information

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