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Image forming apparatus and control method thereof

The technology of an imaging device and a control unit, which is applied in the direction of instruments, electric recording process equipment using charge patterns, optics, etc., can solve the problems of printing efficiency decline, image quality concentration efficiency decline, toner consumption, etc.

Inactive Publication Date: 2008-09-10
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Thus, if the test printing operation is frequently performed, the printing efficiency is lowered, and the toner is unnecessarily consumed in a large amount by the test printing.
[0009] If the cycle for performing the test printing operation is set too long for this reason, it is difficult to immediately respond to changes in image quality, and the efficiency of controlling the density of image quality decreases
As a result, the density of the printed image becomes unstable

Method used

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  • Image forming apparatus and control method thereof
  • Image forming apparatus and control method thereof
  • Image forming apparatus and control method thereof

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Embodiment Construction

[0040] Reference will now be made in detail to exemplary embodiments of the present general inventive concept, examples of which are illustrated in the accompanying drawings, like reference numerals being used to refer to like elements throughout. The exemplary embodiments are described below in order to explain the present general inventive concept by referring to the figures.

[0041] Figure 1A are views illustrating a printing process of an image forming apparatus according to an embodiment of the present general inventive concept.

[0042] The image forming apparatus according to the present embodiment includes a photosensitive drum 1 , a developing unit 2 , an intermediate transfer belt 8 , a printing medium such as transfer paper 9 , and a transfer roller 10 .

[0043] The developing unit 2 includes a toner container 4 , a toner supply motor 6 , a supply roller 3 a , and a developing roller 3 b for performing development with a developer 3 . Toner 5 contained in toner ...

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Abstract

The invention provides an image forming apparatus and a control method thereof. The image forming apparatus includes an image input part, a development unit which is supplied with a toner and forms a developer to develop an input image inputted from the image input part, a transfer member to form a patch image, a density sensor which detects density of the patch image, and a toner supply amount control unit which sets a toner supply amount of the development unit according to changed density of the patch image which is detected by the density sensor with a predetermined detecting cycle and applies the set toner supply amount to operation of printing the input image. Accordingly, a cycle of test printing the patch image can be extended to a longer period, unnecessary consumption of the toner is prevented, and the density of the printed image can be maintained stably.

Description

technical field [0001] The present general inventive concept relates to an image forming apparatus, and more particularly, to an image forming apparatus that adjusts a toner supply amount according to a change in density of an image quality of a patch image and a control method thereof. Background technique [0002] An image forming apparatus includes a toner density sensor for controlling image density to apply a two-component developer. The imaging device is disclosed in Japanese Patent Laid-Open Publication Nos. 2006-133535 and H11-272063. [0003] Japanese Patent Laid-Open Publication No. 2006-133535 discloses a toner density control method that controls by detecting the current toner density and comparing the detected toner density with a predetermined target density value based on image pixels. Toner concentration. [0004] Japanese Patent Laid-Open Publication No. H11-272063 discloses a method for controlling the toner density by detecting the toner density at a spe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/00
CPCG03G15/0131G03G2215/00059G03G15/0827G03G15/5058G03G15/0855G03G15/00G03G15/08
Inventor 久富真一
Owner SAMSUNG ELECTRONICS CO LTD
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