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Image forming device

一种图像、图像载体的技术,应用在应用电荷图形的电记录工艺、应用电荷图形的电记录工艺的设备、仪器等方向,能够解决不会充分反映、不能控制等问题

Inactive Publication Date: 2008-04-23
SHARP KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in the image forming apparatus disclosed in Japanese Unexamined Patent Publication No. 6-301257, the control is performed based on the differential pressure, so when the voltage value output by the patch density detection section gradually fluctuates, even if the patch density detection section malfunctions, it will not Sufficiently reflected to the adjusted value, proper control cannot be performed

Method used

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Examples

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Embodiment Construction

[0050] Preferred embodiments of the present invention will be described in detail below with reference to the drawings.

[0051] FIG. 1 is a schematic cross-sectional view of the configuration of an image forming apparatus 1 as one embodiment of the present invention. The image forming apparatus 1 shown in FIG. 2 has the same structure as a conventional image forming apparatus except that it includes a developing device 20 as an embodiment of the present invention. The image information transmitted by the device through the network, and the image information read by the scanner device included in the image forming apparatus 1 form a monochrome image on a recording medium such as recording paper. In this embodiment, the image forming apparatus 1 is configured as a printer that forms monochrome images, but is not limited thereto, and may be configured as a printer, copier, facsimile, etc. that forms multicolor images. The image forming apparatus 1 includes a document conveying ...

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PUM

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Abstract

An image forming apparatus is provided having a mechanism that toner density of a toner image is automatically adjusted based on a toner patch. In an image forming apparatus including a document conveying section, a document reading section, an image forming section, a sheet discharging section, a sheet feeding section, a patch density detecting section, and a toner density adjusting section for adjusting density of a toner image depending on a result detected by the patch density detecting section, there are further provided a patch forming section for forming a toner patch, an operation detecting section for detecting an operating state of the patch density detecting section, and a patch printing section for printing the toner patch in response to such a result detected by the operation detecting section that the patch density detecting section does not properly operate, thereby adjusting the toner density based on the patch image.

Description

technical field [0001] The present invention relates to an image forming apparatus. Background technique [0002] Image forming apparatuses using electrophotography (hereinafter referred to as “image forming apparatuses”) are widely used in various fields because they can print high-quality images on recording media with simple operations. An image forming apparatus includes, for example, a photosensitive drum, a charging unit, an exposure unit, a developing unit, a transfer unit, and a fixing unit. The photosensitive drum has a photosensitive layer on its surface. The charging unit charges the surface of the photosensitive drum to a predetermined polarity and potential. The exposure portion forms an electrostatic latent image on the surface of the photosensitive drum in a charged state. The developing section supplies toner to the electrostatic latent image on the surface of the photosensitive drum and forms a toner image. The transfer section transfers the toner image ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/00
CPCG03G15/5041G03G15/5033G03G2215/00033G03G15/0824G03G15/0849
Inventor 富田章嗣吉冈彻森国修市长田努广田贵
Owner SHARP KK
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