Variable drop volume continuous liquid jet printing

一种液体射流、液体的技术，应用在印刷等方向，能够解决投射距离短等问题

Active Publication Date: 2015-03-04
EASTMAN KODAK CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since jetting error increases with throw distance, the throw distance needs to be as short as possible, which adversely affects the print margin, which is defined as the spacing between a printed drop and a gutter drop

Method used

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  • Variable drop volume continuous liquid jet printing
  • Variable drop volume continuous liquid jet printing
  • Variable drop volume continuous liquid jet printing

Examples

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Embodiment Construction

[0026] The description relates in particular to elements forming part of, or cooperating more directly with, a 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 to designate the same elements, where possible.

[0027] For the sake of clarity, the exemplary embodiments of the present invention are shown schematically and not to scale. Those of ordinary skill in the art will readily be able to determine the specific dimensions and interconnections of the elements of the exemplary embodiments of the present invention.

[0028] Exemplary embodiments of the present invention, as described herein, provide a printhead or printhead components typically used in inkjet printing systems. In such systems, the liquid is the ink used to print on the recording medium. However, other applicat...

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PUM

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Abstract

A liquid jet includes a fundamental period of jet break off. A print period is defined as N times the fundamental period of jet break off where N is an integer greater than 1. Input image data is provided having M levels per input image pixel including a non-print level where M is an integer and 2<M@N+1. A charging device waveform, independent of the input image data, repeats during print periods and includes print and non-print drop voltage states. A drop formation device waveform, having a period equal to the print period, is selected in response to the input image data to form from the jet print drops having a volume corresponding to an input image pixel level. The devices are synchronized to produce a print drop charge to mass ratio and a non-print drop charge to mass ratio on drops breaking off from the jet.

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 into drops, some of which are deflected. Background technique [0002] Inkjet printing has been recognized as a major contender in the digitally controlled electronic printing world due to, for example, its non-impact, low noise characteristics, use of plain paper, and avoidance of toner transfer and fusing. Depending on the technology inkjet printing mechanisms can be classified as drop-on-demand inkjet (DOD) or continuous inkjet (CIJ). [0003] The first technique, "on-demand" inkjet printing, uses pressurized actuators such as thermal, piezoelectric or electrostatic actuators to deliver ink droplets that impinge on the recording surface. One common drop-on-demand technique 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): B41J2/085B41J2/09
CPCB41J2/085B41J2/09
Inventor 赫里希凯什·V·潘沙瓦格迈克尔·艾伦·马库斯沙希谢卡·P·阿迪加
Owner EASTMAN KODAK CO
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