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Direct electrostatic printing method and apparatus

A kind of technology of equipment and printing head, which is applied in the direction of equipment, printing, and electrography of electrical recording technology using charge graphics, and can solve the problems affecting the accuracy of dots, etc.

Inactive Publication Date: 2002-09-04
ARRAY PRINTERS PUBL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The defect of the existing DDC method is that the performance of the information carrier, such as the performance of the paper, will affect the size of the dot and the accuracy of the dot position control

Method used

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  • Direct electrostatic printing method and apparatus
  • Direct electrostatic printing method and apparatus
  • Direct electrostatic printing method and apparatus

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Experimental program
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Embodiment Construction

[0085] Description of preferred embodiments

[0086] In order to clearly describe the method and equipment of the present invention, reference will be made to the accompanying Picture 1-1 0 describes some instances of its use.

[0087] figure 1 is a schematic sectional view of an image recording apparatus according to a first embodiment of the present invention, comprising at least one printing unit, preferably four printing units (Y, M, C, K), an intermediate image receiving member, a driving roller 11, at least A support roller 12, and preferably several adjustable fixings 13. The above four printing components (Y, M, C, K) are arranged with respect to the intermediate image receiver. The intermediate image receiving member is preferably a transfer belt 10 which is mounted around a driving roller 11 . The at least one support roller 12 has a mechanism that maintains at least a certain contact surface tension of the transfer belt 10 while preventing the transfer belt 10 ...

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PUM

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Abstract

The present invention provides an image recording apparatus and method for recording images on an information carrier. An intermediate image receiving member includes a first side and a second side. A printhead is disposed between the source of toner particles and the first side of the intermediate image receiving member. The image recording apparatus is constituted by a pressure varying means for producing a pressure difference on the side of the second face of the intermediate image receiving member which is adjacent to the aperture for toner particle control. The intermediate image receiving member includes a cleaning area for cleaning purposes and a separate image area for receiving toner particles to form a toner image thereon. The cleaning area includes at least one slit between the first and second sides of the intermediate image receiving member for transferring a pressure differential across the intermediate image receiving member to cooperate with pressure changing means near the aperture to remove Toner agglomerates for hole cleaning purposes.

Description

field of invention [0001] The present invention relates to direct xerographic printing in which charged toner particles are transferred from a particle source to an image transfer member in accordance with image information to form a toner image which is then transferred to an information carrier. Background of the invention [0002] According to direct xerographic printing methods such as disclosed in US Pat. No. 5,036,341, a background electric field is formed between the developer sleeve and the rear electrode so that charged toner particles can be transported therebetween. A printhead placed in a background electric field, such as an electrode array with a large number of selectable apertures, connected to a control unit that converts the image information into a pattern of electrostatically controlled electric fields that selectively open or close the apertures, This allows or restricts toner particles from being transported out of the developer sleeve. The modulated s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41J2/415B41J2/385G03G15/34
CPCB41J2/4155G03G15/346G03G2215/0187G03G2217/0025
Inventor B·伯恩B·吕德斯特伦
Owner ARRAY PRINTERS PUBL