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Rollers for phase-change ink printing

A technology of substrates and machines, applied in the field of phase change inkjet printing, which can solve the problems of narrow working range and low energy efficiency

Inactive Publication Date: 2014-05-14
XEROX CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The result is a process with a narrow operating range and thus low energy efficiency

Method used

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  • Rollers for phase-change ink printing
  • Rollers for phase-change ink printing

Examples

Experimental program
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Embodiment Construction

[0017] The term "printer" herein includes any device that performs a printing function, such as a digital copier or a printer. Although the present disclosure is focused on phase change inkjet applications, other printing techniques are conceivable - as long as the substrate bearing the ink image is passed in contact by a pressure device or guide device. The pressure means or guide means have been described herein as rollers, but other configurations are also conceivable - where there is a surface in contact with the ink image on the substrate. exist figure 1 In the illustrated embodiment, the pressure means or guide means comprises a backing roll 16 , an image side roll 22 and a deflection roll 28 . These rollers are assumed to be non-oiled rollers within the printer.

[0018] For a particular ink material and a particular pressure device, one measure of the risk of ink transfer involves the adhesion between the ink material and the surface. The sliding angle is the angle ...

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PUM

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Abstract

A printer for transferring a phase-change ink onto a substrate comprises components for conveying the substrate along a path through the printing machine, a printing station including a plurality of printheads disposed along the path and configured to transfer the phase-change solid ink onto the substrate as it is conveyed along the path, a plurality of metal backing rollers facing the plurality of printheads and arranged to support to the substrate passing between the backing rollers and the printheads, and a spreader station receiving the substrate from the printing station and configured to spread the phase-change solid ink on the substrate, the spreader station including a spreader roller and a metal pressure roller opposing the spreader roller. Each of the non-oiled metal rollers includes a coating that is an oleophobic that has low adhesion toward the solid ink image but sufficient lateral friction as to not slide against the ink or paper web.

Description

technical field [0001] The present invention relates to inkjet printing, and in particular to phase change inkjet printing on a substantially continuous web. Background technique [0002] Inkjet printing involves ejecting ink droplets from orifices in a printhead onto a receiving surface to form an image. The image consists of a grid-like pattern of potential drop locations, commonly referred to as pixels. Inkjet printing systems typically use direct printing or offset printing techniques. In a typical direct printing system, ink is ejected from orifices in the printhead directly onto the final receiver web. In offset printing systems, an image is formed on an intermediate transfer surface and then transferred to a final receiver roll. The intermediate transfer surface may be in the form of a liquid layer applied to a support surface such as a drum. The printhead ejects ink onto the intermediate transfer surface to form an ink image thereon. Once the ink image is fully ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B41F16/00
CPCB41J11/057
Inventor K-Y·劳P·J·麦康维尔J·E·威廉斯
Owner XEROX CORP