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Direct electrostatic printing method and apparatus

A technology of equipment and print head, which is applied to equipment, printing, and electro-recording techniques using electric charge patterns, and can solve problems such as the influence of information carriers on point accuracy.

Inactive Publication Date: 2001-01-31
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

Examples

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

An image recording device and method for recording an image to an information carrier. An intermediate image receiving member has a first face and a second face. The printhead structure is placed inbetween a pigment particle source and the first face of the intermediate image receiving member. The image recording device comprises a pressure changing means which can create a pressure difference on the side of a second face of the intermediate image receiving member in the vicinity of apertures used for pigment particle control. The intermediate image receiving member comprises a cleaning area for cleaning purposes and a separate image area intended for reception of pigment particles for formation of a pigment image thereon. The cleaning area includes at least one slot between the first face and the second face of the intermediate image receiving member being intended for transferring a pressure difference through the intermediate image receiving member to thereby, in cooperation with the pressure changing means in the vicinity of the apertures, be able to dislodge pigment agglomeration for the purpose of cleaning the apertures.

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