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Developing roller and developing device provided with developing roller

A developing device and a developing roller technology, which are applied in the fields of electric recording technology using charge patterns, equipment for electric recording technology using charge patterns, and electrography, etc., and can solve problems such as stress applied by developers

Active Publication Date: 2018-06-12
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This may result in excessive stress being applied to the developer located at the nip portion between the developing roller and the supply roller

Method used

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  • Developing roller and developing device provided with developing roller
  • Developing roller and developing device provided with developing roller
  • Developing roller and developing device provided with developing roller

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0026] will refer to Figures 1 to 4B A laser printer provided with a developing cartridge according to an embodiment of the present invention is described, wherein similar parts and components are denoted by the same reference numerals to avoid duplication of description.

[0027] In the following description, the terms "upward", "downward", "upper", "lower", "above", "below", "below" will be used assuming that the laser printer 1 is set in the orientation in which it is intended to be used. , "Right", "Left", "Front", "Back" and so on. More specifically, in figure 1 In , the left and right sides are the posterior and anterior sides, respectively. In addition, in figure 1 , topside and bottomside are the topside and bottomside, respectively.

[0028]

[0029] as in figure 1 As illustrated in , a laser printer 1 includes a main housing 2 , and inside the main housing 2 , a feeding section 4 for feeding a sheet 3 and an image forming section 5 for forming an image on the...

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PUM

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Abstract

A developing roller configured to carry developer and extending in an axial direction includes: a first rotation shaft; a second rotation shaft; a rubber body portion; a first cylindrical rubber portion; and a second cylindrical rubber portion. The body portion has a first side and a second side opposite to the first side in the axial direction. The first cylindrical rubber portion is disposed on the first side. The first rotation shaft is configured to be fitted with the first cylindrical rubber portion. The second cylindrical rubber portion is disposed on the second side. The second rotation shaft is configured to be fitted with the second cylindrical rubber portion. The rubber body portion is configured to be deformable more than the first cylindrical rubber portion and the second cylindrical rubber portion.

Description

technical field [0001] The invention relates to a developing roller and a developing device, the developing roller is used to carry developer, and the developing device is provided with the developing roller. Background technique [0002] There is conventionally known a developing device including a developing roller and a supply roller for supplying developer to the developing roller. More specifically, the developing roller includes a rotating shaft made of metal and a hollow cylindrical rubber portion for covering the outer peripheral surface of the rotating shaft. Along the axial direction of the rotation shaft, the rubber portion has a uniform wall thickness. [0003] However, with the conventional structure described above, the cylindrical rubber portion is supported by the metal rotating shaft that hardens the rubber portion. This may result in excessive stress being applied to the developer located at the nip portion between the developing roller and the supply rol...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/08
CPCG03G15/0818G03G15/0896G03G2215/0861
Inventor 今井匡小木曾茉莉花
Owner BROTHER KOGYO KK