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Drop placement error reduction in electrostatic printer

A technology for printing liquid and droplets, applied in printing and other directions, can solve problems such as droplet positioning and adverse effects on printing quality, and achieve the effects of improving droplet positioning accuracy, reducing complexity, and long throwing distance

Active Publication Date: 2014-12-10
EASTMAN KODAK CO
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  • Abstract
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AI Technical Summary

Problems solved by technology

These interactions can adversely affect droplet positioning and print quality

Method used

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  • Drop placement error reduction in electrostatic printer
  • Drop placement error reduction in electrostatic printer
  • Drop placement error reduction in electrostatic printer

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Embodiment Construction

[0051] The description will relate in particular to elements forming part of or cooperating more directly with the device according to the invention. It is to be understood that elements not specifically shown or described may take various forms well known to those skilled in the art. In the following description and drawings, the same reference numerals are used wherever possible to designate the same elements.

[0052] Example embodiments of the present invention are shown schematically and not drawn to scale for the sake of clarity. Those of ordinary skill in the art will be able to readily determine the specific dimensions and interconnections of the elements of the example embodiments of the invention.

[0053] As described herein, example embodiments of the present invention provide printheads or printhead components generally used in inkjet printing systems. In such systems, the liquid is the ink used to print on the recording medium. However, other applications are ...

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PUM

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Abstract

A group timing delay device shifts the timing of drop formation waveforms supplied to drop formation devices of one of first and second nozzle groups so that print drops from the nozzle groups are not aligned relative to each other along a nozzle array direction. A charging device includes a common charge electrode associated with liquid jets from the nozzle groups and a source of varying electrical potential between the charge electrode and liquid jets which provides a charging waveform that is independent of a print and non-print drop pattern. The charging device is synchronized with the drop formation devices and the group timing delay device to produce a print drop charge state on print drops of a drop pair, a first non-print drop charge state on non-print drops of the drop pair, and a second non-print drop charge state on third drops.

Description

technical field [0001] The present invention relates generally to the field of digitally controlled printing systems and, in particular, to continuous printing systems in which a stream of liquid is broken up into droplets of which some are electrostatically deflected. Background technique [0002] Inkjet printing has been considered a prominent contender in the field of digitally controlled electronic printing due to, for example, its non-impact, low noise characteristics, use of plain paper, and avoidance of toner transfer and development. Inkjet printing mechanisms can be classified by technology as drop-on-demand (DOD) or continuous inkjet (CIJ). [0003] The first technique, "drop-on-demand" inkjet printing, provides ink droplets that impact the recording surface by using pressurized actuators (thermal, piezoelectric, etc.). One commonly practiced drop-on-demand technology uses thermal actuation to eject ink droplets from nozzles. A heater located at or near the nozzl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B41J2/115
CPCB41J2/115
Inventor 迈克尔·艾伦·马库斯赫里希凯什·V·潘沙瓦格沙希谢卡·P·阿迪加卡姆·臣·恩格
Owner EASTMAN KODAK CO
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