Cleaning device and cleaning performance maintaining method

A cleaning device and cleaning technology, which is applied in the fields of instruments, optics, electrical recording, etc., can solve the problem of not being able to fully suppress the adhesion

Inactive Publication Date: 2010-12-01
KK TOSHIBA +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] When applying lubricant powder to the contact portion between the cleaning blade and the elastic sheet, the contact between the two may not be sufficiently suppressed due to variations in the application method.

Method used

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  • Cleaning device and cleaning performance maintaining method
  • Cleaning device and cleaning performance maintaining method
  • Cleaning device and cleaning performance maintaining method

Examples

Experimental program
Comparison scheme
Effect test

no. 1 approach

[0028] First, the first embodiment will be described.

[0029] figure 1 is a longitudinal sectional view of the image forming apparatus.

[0030] The image forming apparatus includes an image reading unit R and an image forming unit P. As shown in FIG.

[0031] The image reading unit R scans and reads images of sheet originals and book originals.

[0032] The image forming unit P forms a developer image on a sheet based on an image read from a document by the image reading unit R, image data sent from an external device to the image forming apparatus, or the like.

[0033] The image reading unit R has an automatic document feeder 9 . The image reading unit R reads an image of a document loaded on a document tray Rt or a document table (not shown) automatically conveyed by the automatic document feeder 9 .

[0034] The image forming section P includes pickup rollers 51 to 54, photoreceptors 2Y to 2K, developing rollers 3Y to 3K, agitators 4Y to 4K, cleaning units 6Y to 6K (...

no. 2 approach

[0075] The second embodiment will be described below.

[0076] The second embodiment is a modified example of the first embodiment described above. Hereinafter, parts having the same functions as those in the above-mentioned structure are denoted by the same symbols, and description thereof will be omitted.

[0077] Figure 9 It is an example diagram of another printing pattern of the screen printing performed on the elastic sheet in 2nd Embodiment.

[0078] On the elastic sheet 603, a pattern of arranging a plurality of dots is screen-printed as the protrusions 603d.

[0079] By screen printing on the surface of the elastic sheet 603 to form Figure 9 The convex portion 603d of the printing pattern shown can ensure a gap corresponding to the thickness of the convex portion 603d between the cleaning blade 601 and the elastic sheet 603, and can prevent the cleaning blade 601 from coming into contact with the elastic sheet 603 (adhesion) . By forming the protrusion 603d bet...

no. 3 approach

[0087] Next, a third embodiment will be described. Hereinafter, parts having the same functions as those in the above-mentioned configuration examples are denoted by the same symbols, and description thereof will be omitted.

[0088] Conventionally, there is known a structure in which a secondary transfer unit that transfers a toner image from an intermediate transfer belt to a recording medium such as a sheet has a mechanism for supplying lubricating oil to a secondary transfer roller.

[0089] Such a secondary transfer unit includes a brush roller for supplying a lubricant, a solid lubricant, and a brush roller that pushes toward the brush roller with the front end of the brush in contact with the roller surface of the secondary transfer roller included in the secondary transfer unit. A spring that presses the lubricant, a bearing that fixes the rotating shaft of the brush roller, a case that holds the brush roller, and a drive gear that transmits rotational force from a dri...

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PUM

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Abstract

The present invention provides a cleaning device and a cleaning performance maintaining method. By means of setting at least one of concave parts or convex parts arranged on at least a part of the surface of an elastic sheet facing to a cleaning blade between the cleaning blade and the elastic sheet, the surface of the cleaning blade is prevented from contacting with the surface of the elastic sheet.

Description

technical field [0001] This application claims priority to US Provisional Application No. 61 / 181987, filed May 28, 2009, and US Provisional Application No. 61 / 183422, filed June 2, 2009, the entire contents of which are hereby incorporated by reference. technical field [0002] The present invention relates to performance maintenance of a cleaning blade on a cleaning unit of an image forming apparatus. Background technique [0003] In the related art, it is known in an electrophotographic image forming apparatus to have a cleaning unit including a cleaning blade for scraping off the residue remaining on the photosensitive material after the toner image is transferred to the recording medium. the remaining toner on the body or intermediate transfer body. [0004] The cleaning blade protrudes outward from an opening formed on the outer wall of the cleaner case, is rotatably supported by the support portion, and contacts or separates from a roller or belt to be cleaned. The...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G21/00
CPCG03G21/0029G03G21/10G03G21/0017G03G21/12G03G21/007
Inventor 群部荣二栗田荣三
Owner KK TOSHIBA
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