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Image forming apparatus, method of controlling same, program and recording medium for program

An image and main control technology, applied in the electrical recording process using charge graphics, equipment for electrical recording technology using charge graphics, and electrical recording technology, can solve the problems of complex manufacturing costs, damages, and complex prices.

Inactive Publication Date: 2006-08-23
SHARP KK
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  • Summary
  • Abstract
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  • Application Information

AI Technical Summary

Problems solved by technology

However, in this case, it is necessary to provide a separation mechanism with good precision that can keep the gap (air gap) between the photoreceptor and the developing chamber constant, and this will lead to a complication of the mechanism and an increase in manufacturing cost.
[0017] In addition, when the developer is discharged, in the state where the photoreceptor is stopped and only the developing chamber is rotated, the magnetic ear of the developer will only contact a specific part of the photoreceptor in the stopped state, and it will be in contact with the developer. Damage (damage) occurs on the rubbed photoreceptor surface
It is possible to independently drive the conveying screw for discharging the developer and the developing sleeve for conveying the developer to the photoreceptor in the developing chamber, but this mechanism is also complicated and expensive

Method used

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  • Image forming apparatus, method of controlling same, program and recording medium for program
  • Image forming apparatus, method of controlling same, program and recording medium for program
  • Image forming apparatus, method of controlling same, program and recording medium for program

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Embodiment Construction

[0043] Next, an embodiment of the present invention will be described.

[0044] [Image forming apparatus 100 ]

[0045] figure 2 It is a cross-sectional view showing a schematic configuration of an image forming apparatus 100 as an example of the image forming apparatus of the present invention. Also, the image forming apparatus 100 is a color tandem image forming apparatus that forms a multi-color or monochrome image on recording paper (sheet) based on image data transmitted from the outside.

[0046] As shown in the figure, an image forming apparatus 100 is composed of an exposure unit 1, developing devices 2a to 2d, photosensitive drums 3a to 3d, chargers 5a to 5d, cleaning units 4a to 4d, an intermediate transfer belt 7, and an intermediate transfer belt. Unit 8, fixing unit 12, paper transport path S, paper feed tray 10, paper discharge tray 15, etc. In addition, the operations of the above-mentioned components included in the image forming apparatus 100 are controlle...

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Abstract

An image forming apparatus of the present invention includes main control section for controlling the charging control section and the development bias control section so that a potential difference between the photoconductor potential and the development bias potential in developer discharge from the development section is smaller than that in the image forming. Therefore, even when an amount of developer in the development section decreases due to developer discharge, increase of beads-carry-over onto the photoconductor from the development section can be prevented. Accordingly, damage to the photoconductor or image errors due to incomplete cleaning that are caused by beads-carry-over can be prevented.

Description

technical field [0001] The present invention relates to an image forming apparatus for making an electrostatic latent image into a visible image by using a powder developer, and in particular to an image forming apparatus having a function of discharging waste developer, a control method of the image forming apparatus, a program, and a recording medium thereof , wherein the electrostatic latent image is an electrostatic latent image formed on the photoreceptor by electrophotography or electrostatic recording. Background technique [0002] In an image forming apparatus using a developing device of a two-component developing system, when the developer (two-component developer) has reached the end of its service life, that is, when it is time to replace the developer, image density deviation occurs Or fog (Fog), etc., wherein the developing device of the two-component developing system is a developing device using a toner and a carrier. Therefore, when the useful life of the d...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03G15/08G03G15/02G03G15/16G03G15/00
CPCG03G15/065G03G2215/0609G03G15/0266
Inventor 直井宏夫德山满久保田宏竹内幸一
Owner SHARP KK
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