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Process unit and image-forming device using process unit

A technology for processing unit and image, applied in the direction of electric recording process applying charge pattern, equipment for applying electric recording process of charge pattern, electric recording technique, etc. increased pressure, etc.

Active Publication Date: 2012-07-04
BROTHER KOGYO KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the latter case, the increased pressure contact between the developing roller and the photosensitive drum may hinder the smooth rotation of the developing roller and the photosensitive drum
Furthermore, in the second conventional example, the pressing force of the pressing member is increased to prevent the shaking of the developing unit, resulting in an increased pressing force between the photosensitive drum and the developing roller.

Method used

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  • Process unit and image-forming device using process unit
  • Process unit and image-forming device using process unit
  • Process unit and image-forming device using process unit

Examples

Experimental program
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Embodiment Construction

[0019] First, refer to figure 1 A color printer 1 according to an embodiment of the present invention is described.

[0020] Throughout the specification, it is assumed that the color printer 1 is arranged at a position where it needs to be used, and the terms "up", "down", "above", "below", "above", "below", "below", "right" , "left", "front" and "rear" etc. will be used throughout the specification. In use, the color printer 1 is arranged as figure 1 at the position shown. Specifically, figure 1 The right side of is called the front side, and figure 1 The left side is called the posterior side. figure 1 The far side in will be referred to as the right side, and figure 1 The near side in will be referred to as the left side.

[0021] Such as figure 1 As shown, the color printer 1 includes a main body 10 provided with a pivotally movable front cover 11 . In the main body 10, a sheet supply unit 20, an image forming unit 30, and a sheet discharge unit 90 are provided. ...

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PUM

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Abstract

A process unit includes an image bearing member a first frame, a developing unit, a pressing assembly, and a pressing-force adjusting assembly. The first frame supports the image bearing member. The developing unit includes a developing roller and a second frame supporting the developing roller. The pressing assembly generates a first pressing force acting on the developing unit such that the developing roller is in pressure contact with the image bearing member. The pressing-force adjusting assembly contacts one of the first frame and the developing unit and generates a second pressing force acting on the developing unit against the first pressing force. The second pressing force is smaller than the first pressing force.

Description

technical field [0001] The present invention relates to an image forming apparatus, and more particularly, to a developing unit detachably mounted to a photosensitive unit, and a process unit provided with the developing unit and the photosensitive unit. Background technique [0002] As a conventional example, Japanese Patent Application Publication No. 2009-180987 discloses a process unit provided with a photosensitive unit having a photosensitive drum, a developing unit having a developing roller for supplying adjustment colors to the photosensitive drum , and a coil spring that pushes the developing unit so that the developing roller comes into pressure contact with the photosensitive drum. [0003] More specifically, the photosensitive unit has a box-shaped housing with an upper opening, the photosensitive drum is provided at one end of the housing, and the coil spring is provided at the other end of the housing. After the photosensitive unit is assembled to the develop...

Claims

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Application Information

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IPC IPC(8): G03G21/18G03G15/08G03G15/00
CPCG03G2215/0636G03G21/1821G03G15/0813
Inventor 桥本淳一清水贵司
Owner BROTHER KOGYO KK
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