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Image forming apparatus

An image and image-carrying technology, which is applied in the fields of electrical recording technology using charge graphics, equipment for electrical recording technology using charge graphics, and electrical recording technology, which can solve problems such as blurring of thin lines and not considering image resolution, etc.

Inactive Publication Date: 2015-07-22
OKI DATA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, in the conventional image forming apparatus, the resolution of the image to be printed is not taken into consideration, and thus fine line blurring occurs

Method used

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Examples

Experimental program
Comparison scheme
Effect test

no. 1 example

[0027] First, a printer as an image forming apparatus of a first embodiment of the present invention will be described. This printer is configured as a color electrophotographic printer including four image forming units corresponding to black (K), yellow (Y), magenta (M), and cyan (C), thereby printing on a recording medium (such as a sheet) form a color image.

[0028] figure 1 is a schematic diagram showing the printer 100 according to the first embodiment. The printer 100 has a substantially S-shaped sheet feed path S starting from the tray 28 in which the recording medium P is stored and approaching the discharge roller 35a that discharges the recording medium P to the The exterior of the printer 100. Along the sheet feeding path S, image forming units 20Bk, 20Y, 20M, and 20C and a fixing unit 38 are arranged. Further, feed rollers are also arranged along the sheet feeding path S to feed the recording medium P by the image forming units 20Bk, 20Y, 20M, and 20C.

[00...

no. 2 example

[0078] The printer according to the second embodiment of the present invention is configured to perform ID speed correction (as described in the first embodiment) after density correction using the density correction pattern formed on the recording medium P or the transfer belt 31 ) to ensure that fine lines are prevented from being blurred and a good image is formed consistently.

[0079] The printer 200 of the second embodiment has the same components as those of the printer 100 of the first embodiment. In addition, the image forming process of the printer 200 is the same as that of the printer 100 . Therefore, components of the printer 200 that are the same as those of the printer 100 are assigned the same reference numerals, and repeated descriptions will be omitted. The following description will focus on the differences between the first and second embodiments.

[0080] Figure 7 is a schematic diagram showing the configuration of the printer 200 . This printer 200 h...

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PUM

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Abstract

A image forming apparatus includes a rotatable image bearing body, an exposing unit that irradiates the image bearing body to form a latent image, a developer bearing body that develops the latent image to form a developer image, a transfer unit that transfers the developer image to a recording medium, a feeding unit that feeds the recording medium, a density detecting unit that detects a developer density of the developer image transferred to the recording medium, and a speed difference control unit that controls a difference of a circumferential speed of the image bearing body and a feeding speed of the recording medium fed by the feeding unit. The speed difference is controlled based on a density of a thin line pattern transferred to the recording medium detected by the density detecting unit.

Description

technical field [0001] The present invention relates to image forming apparatuses such as printers, copiers, etc. that use electrophotographic technology. Background technique [0002] In electrophotography used in image forming apparatuses such as printers, copiers, etc., an exposure device irradiates a photosensitive drum (as an image bearing body) with light to form a latent image based on input image data, and a developing device uses toner ( as a developer) to develop the latent image to form a toner image. This toner image is transferred to a sheet (as a recording medium), and then fixed to the sheet. [0003] In general, the developing device includes: a developing roller for supplying toner to a photosensitive drum; a supply roller for supplying the toner to the developing roller; a device for adjusting the thickness of the toner layer on the developing roller; Adjust the blades. The toner is supplied from the detachable toner cartridge according to the developing...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G03G15/00
CPCG03G2215/00067G03G2215/0138G03G15/5062G03G15/5008
Inventor 尾关文崇
Owner OKI DATA CORP