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Transfix roller with adjustable crown for use in an indirect printer

A printing press, indirect technology, applied in printing presses, rotary presses, printing, etc., can solve the problems of deflection, excessive compensation of convex parts, high pressure, etc.

Inactive Publication Date: 2014-01-15
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This condition may be due to the crown being too tall and over compensating for the deflection, and the resulting higher pressure in the center of the nip

Method used

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  • Transfix roller with adjustable crown for use in an indirect printer
  • Transfix roller with adjustable crown for use in an indirect printer
  • Transfix roller with adjustable crown for use in an indirect printer

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1The illustrated image transfer system 200 includes an image receiving member 204 , a transfix roller 208 , and a support assembly 212 that accommodates deflection at the center of the transfix roller 208 and pressure variations along a nip 216 . The transfix roller 208 is configured to move into and out of engagement with the image receiving member 204 in a known manner. The transfix roller 208 is configured to apply pressure to the image receiving member 204 and form a nip 216 to transfer an ink image from the image receiving member 204 to the media passing through the nip 216 . The support assembly 212 is configured to apply different amounts of pressure to the central region and the end portions of the transfix roller 208 . The pressure applied by support assembly 212 to transfix roller 208 at nip 216 is transmitted through transfix roller 208 to image receiving member 204 .

[0024] figure 2 Detailed features of the image receiving member 204 are depict...

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PUM

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Abstract

An indirect printer includes a system for alternating the pressure in a transfer nip by manipulating the transfer roller. The system includes a pair of pivotable collars mounted about the ends of the transfer roller. The collars are pivoted towards or away from one another to bend the transfer roller and to increase or decrease, respectively, the pressure in the longitudinal center of the nip.

Description

technical field [0001] The systems described below relate to printing presses in which an ink image is transferred from the surface of an image receiving assembly to a recording medium, and, more particularly, to printing presses in which the image is transferred as the medium passes through a nip formed between a fuser roller and an image receiving member. A printing press that prints to recording media. Background technique [0002] A schematic diagram of a typical indirect printing machine is shown in Figure 8 , the printer includes a printhead that ejects phase change ink onto an image receiving member to form an image on the member. A solid ink imaging device, hereinafter simply referred to as a printer 110, has an ink loader 112 that receives and carries solid ink sticks. The ink sticks advance through the feed channel of the loader 112 until they reach the ink melting unit 114 . The ink melting unit 114 heats the portion of the ink stick that hits the ink melting u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/01
CPCB41J2/0057B41F13/193B41F13/18
Inventor 布鲁斯·E·赛耶巴尔卡德·S·拉梅什雷切尔·L·麦格拉斯张斌克里斯托弗·A·迪鲁比奥
Owner XEROX CORP