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Image Forming Apparatus

An image and developing device technology, which is applied in the fields of electrical recording technology using charge graphics, equipment for using electrical recording technology using charge graphics, and electrical recording technology, can solve problems such as scratching the surface of photosensitive drums and developing rollers, and achieve simplification. structure effect

Active Publication Date: 2015-12-30
KYOCERA DOCUMENT SOLUTIONS INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, when the drum unit or developing unit is replaced, the photosensitive drum will come into contact with the developing roller, and there is a risk of scratching the surface of the photosensitive drum and developing roller.

Method used

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Examples

Experimental program
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Effect test

Embodiment Construction

[0031] Hereinafter, embodiments of the present invention will be described with reference to the drawings. figure 1 It is a cross-sectional view showing a schematic configuration of an image forming apparatus 100 according to an embodiment of the present invention. In this embodiment, the image forming apparatus 100 is a four-in-line color printer, and four photosensitive drums 1a, 1b, 1c, and 1d corresponding to four different colors (magenta, cyan, yellow, and black) are arranged in parallel to form images. .

[0032] Inside the main body of the image forming apparatus 100, from figure 1 Four image forming sections Pa, Pb, Pc, and Pd are sequentially arranged on the middle left. The aforementioned image forming parts Pa to Pd are provided corresponding to images of different four colors (magenta, cyan, yellow, and black), and sequentially form images of magenta, cyan, yellow, and black through the processes of charging, exposure, development, and transfer, respectively. i...

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PUM

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Abstract

An image forming apparatus (100) includes an image carrier unit (40a-40d), a developing device (3a-3d), a unit support frame (103), a retainer (85), and a developing device moving mechanism. The retainer (85) swings in a first direction, in which the image carrier unit (40a-40d) and the developing device (3a-3d) are mounted in the unit support frame (103), to perform positioning of an image carrier (1a-1d), and swings in a second direction, in which the image carrier unit (40a-40d) and the developing device (3a-3d) are drawn out from a main body of the image forming apparatus (100), to unlock a positioned state of the image carrier (1a-1d). The developing device moving mechanism associates with the swing of the retainer (85) in the first direction to dispose the developing device (3a-3d) at a developing position, and associates with the swing of the retainer (85) in the second direction to dispose the developing device (3a-3d) at a separation position.

Description

technical field [0001] The present invention relates to image forming apparatuses such as copiers, printers, and facsimile machines, and more particularly, to an image forming apparatus including a developing device and an image carrier unit detachably attached to the image forming apparatus. Background technique [0002] In conventional image forming apparatuses, the drum unit (image carrier unit) including the photosensitive drum needs to be replaced when the number of printed sheets reaches a predetermined number (for example, tens of thousands) depending on the life of the photosensitive drum (image carrier). In addition, it is sometimes necessary to maintain and replace the developing device disposed adjacent to the drum unit. [0003] Wherein, the developing roller of the developing device is placed in contact with or close to the photosensitive drum. Therefore, the photosensitive drum comes into contact with the developing roller when the drum unit or developing devi...

Claims

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Application Information

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IPC IPC(8): G03G15/08
CPCG03G15/0818G03G21/1623G03G21/1633G03G21/1676G03G21/1821G03G21/1825G03G21/1842G03G2221/1654
Inventor 大桥広章柏本昌広
Owner KYOCERA DOCUMENT SOLUTIONS INC