Image forming apparatus
An image forming and equipment technology, which is applied to the equipment of the electric recording process using the charge pattern, the electric recording process and the instrument using the electric charge pattern, etc., can solve the problems of many manufacturing processes, complicated manufacturing and operation, and adverse effects of manufacturing costs.
Inactive Publication Date: 2004-06-23
KK TOSHIBA
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Problems solved by technology
[0012] In addition, according to the existing color copying machine, since each image forming mechanism Ya-Yd has many constituent devices (hereinafter referred to as photosensitive drum 1, charging device 2, exposure device 3, developing device 4, transfer device 5, cleaning device 6. The discharge device 7 is collectively referred to as a constituent device), and must be equipped with 4 sets of the above constituent devices, so that the manufacture and operation of each mechanism are more complicated, which will adversely affect the manufacturing cost
In addition, since in each image forming mechanism Ya-Yd, it is necessary to make the constituent devices arranged around each photosensitive drum 1a-1d be positioned with relatively high precision relative to the photosensitive drum, this will cause many manufacturing processes, and the copier assembly long time issues
Method used
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[0098] Embodiments of the present invention will be described below with reference to the accompanying drawings.
[0099] figure 1 The internal structure of a 4-cascade system color copier as the image forming apparatus of the present invention is schematically shown.
[0100] This color copier has a main body 10 . A document placement table 10 a formed of a transparent glass plate is fitted on the top surface of the main body 10 . An automatic document feeder 11 (hereinafter referred to as ADF 11 ) is provided above the original table 10a, and the device 11 automatically feeds stacked originals to the original table 10a one sheet at a time. The ADF 11 is openably and closably provided on the original table 10a, and thus also has a function of a document pressure member that presses an original placed on the original table 10a.
[0101] Inside the above-mentioned main body 10, below the document placement table 10a, there is provided a scanning section 12 that receives irra...
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As an image forming apparatus of this invention, a color copying machine in which four image forming units are juxtaposed along the convey direction of a paper sheet is known. Each image forming unit has a photosensitive drum which is in rolling contact with a conveyor belt. Around the photosensitive drum, a charging device, exposure device, developing device, transfer device, cleaning device, and charge removing device are placed in turn along the rotation direction of the drum. An image unit is interposed between the photosensitive drum in the predetermined image forming unit, and the photosensitive drum in the image forming unit, which neighbors that image forming unit on its upstream side.
Description
technical field [0001] The present invention relates to an image forming apparatus in which a plurality of image forming mechanisms are arranged side by side along the conveying direction of a transfer medium, and particularly relates to an image forming apparatus in which four mechanisms for outputting images of four colors are arranged side by side. An electrophotographic color copier with an image forming mechanism, or image forming equipment such as a color printer. Background technique [0002] FIG. 27 schematically shows the structure of a color copier as an existing image forming apparatus, in which image forming units Ya to Yd (image forming mechanism) of four colors are arranged side by side along the conveying direction of paper P (transfer medium). ). [0003] Each of the image forming mechanisms Ya to Yb includes photosensitive drums 1a to 1d as image carriers, respectively. Below each of the photosensitive drums 1a to 1d, a conveyor belt T extending substantia...
Claims
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IPC IPC(8): G03G15/01
CPCG03G15/0178G03G15/0194G03G2215/0119
Inventor 高木修桥本佳也村田弘木村和久
Owner KK TOSHIBA