发明名称 |
CONTINUOUS INK JET PRINT HEAD CONTROL |
摘要 |
Disclosed is a method for controlling a multi-nozzle ink jet print head having a pressure modulator for causing streams of ink emitted from the nozzles to be broken up into individual droplets. The nozzles are divided into a plurality of groups of nozzles, and there are corresponding groups of charge electrodes. Each group of charge electrodes has a respective charge controller. The print head is operated by generating a modulation waveform to operate the pressure modulator to cause droplets to be generated in each stream. Independently for each group of charge electrodes, the respective charge controller is operated to supply a charge signal waveform to each charge electrode in turn, the phase of the charge signal waveform relative to the modulation waveform is adjusted between 0 and 360 degrees in a number of steps, and the optimum phase relationship to achieve proper charging for each droplet stream is determined in turn. Thereafter the phase of the charge signal waveform relative to the modulation waveform is adjusted to achieve charging of droplets in all the streams in the group simultaneously. |
申请公布号 |
WO9828150(A1) |
申请公布日期 |
1998.07.02 |
申请号 |
WO1997GB03489 |
申请日期 |
1997.12.18 |
申请人 |
DOMINO PRINTING SCIENCES PLC;LECHEHEB, AMMAR;ZABA, JERZY, MARCIN |
发明人 |
LECHEHEB, AMMAR;ZABA, JERZY, MARCIN |
分类号 |
B41J2/115 |
主分类号 |
B41J2/115 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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