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Development roller, surface treatment device and wire member

A technology for surface treatment devices and developing rollers, which is applied in the direction of instruments, electrical recording process equipment using charge patterns, optics, etc., and can solve the problems of large abrasives, deformation, unevenness, etc.

Inactive Publication Date: 2007-03-21
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In this way, if the outer surface of the developing sleeve is formed to have a uniform roughness, the image on the recording paper may become uneven.
[0037] In the above-mentioned sandblasting process using glass beads, etc., the abrasive is larger than that of general sandblasting, so the developing sleeve is prone to bending, deformation, etc.
In addition, in the above-mentioned sandblasting process using glass beads and the like, spherical glass beads and the like are blown onto the above-mentioned outer surface, so the outer surface of the above-mentioned developing sleeve is likely to form periodic irregularities.
Therefore, the implemented sandblasting process uses the above-mentioned developing sleeve such as glass beads, and the unevenness formed on the outer surface is not easy to wear, and the delivery amount of the developer will not be reduced due to the change over time, but at the same time, the outer surface forms periodicity. Concave and convex, thus prone to density unevenness

Method used

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  • Development roller, surface treatment device and wire member
  • Development roller, surface treatment device and wire member
  • Development roller, surface treatment device and wire member

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-1

[0149] In Example 1-1, the roller main body 33a was molded after orienting the magnetic powder in the molding material as described above. And, use above-mentioned material as magnet block 33b, 33c: Nd-Fe-B+PA6 (6 nylon), maximum energy product Bhmax is 10MGOe, magnetic pole S3 (development pole) shape: height 3mm, width 3mm, magnetic pole N4 (adjacent Heteropolar) shape: height 2.3mm, width 5mm.

Embodiment 5

[0463] Embodiment 5 of the present invention will be described below. The surface treatment apparatus 701 of Embodiment 5 of the present invention is to roughen the outer surface of the cylindrical supply member shown in FIG. 215 of the developing sleeve 232 (shown in Figure 11) means. The outer diameter of the supply member such as the developing sleeve 232 is preferably about 17 mm to 18 mm. The length of the developing sleeve 232 in the direction of the axial center P (indicated by a dotted line in FIG. 32 ) is preferably about 300 mm to 350 mm. The surface roughness of the outer surface of the developing sleeve 232 gradually increases (roughens) as the central portion in the axial direction of the developing sleeve 232 goes toward both end portions. In addition, in the illustrated example, the line material 265 is formed in a cylindrical shape, and its size has an outer diameter of 0.5 mm to 1.4 mm and a total length of about 3.0 mm to 14.0 mm.

[0464] In addition, in ...

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Abstract

The present invention provides a development roller able to supply a developer to the photo conducive drum uniformly. The development roller includes a development sleeve disposed near a photo conductive drum, a magnetic roller disposed in the development sleeve, and a supplying device configured to supply a developer including a toner and a magnetic carrier to the photo conducive drum uniformly, the development sleeve having an outer surface on which the developer including the toner and the magnetic carrier is adsorbed by a magnetic force of the magnetic roller.

Description

technical field [0001] The present invention relates to a developing roller used in copiers, facsimile machines, printers, etc., and more particularly to a developing roller, a surface treatment device, and a line material, wherein the developing roller is characterized in that it includes a developing sleeve disposed adjacent to a photoreceptor, and The magnetic roller arranged in the developing sleeve, the above-mentioned developing sleeve absorbs the developer including the toner and the magnetic carrier on the outer surface of the developing sleeve through the magnetic force of the above-mentioned magnetic roller; wherein the surface treatment device The outer surface of the developing sleeve is treated; wherein the line material is used to roughen the outer surface of the developing sleeve. Background technique [0002] Various developing devices 100 are used in image forming apparatuses such as copiers, facsimile machines, and printers (see, fo...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/00
Inventor 神谷纪行今村刚鸭井澄男肥塚恭太高野善之寺岛美惠子寺岛智史阿部紘也中村茂治渡边将树
Owner RICOH KK