Title:
プリントヘッド制御
Document Type and Number:
Japanese Patent JP6421363
Kind Code:
B2
Abstract:
A method of printing a two-dimensional bit-mapped image having a number of pixels per row for printing using a plurality of overlapping printheads or a printhead or printheads indexed through overlapping positions, the or each printhead having a row of ejection channels, each ejection channel having associated ejection electrodes, the method comprising: applying a voltage to the ejection channels sufficient to cause concentration of particles in the printing fluid at the ejection channels, applying voltage pulses of respective predetermined amplitude and/or duration, as determined by respective image pixel bit values, to the electrodes of the selected ejection channels in order to cause volumes of printing fluid to be ejected from selected ejection channels of the overlapping printheads, thereby forming a pixel of a predetermined optical density, adjusting, for each row of the image, the values of the voltage pulses to be applied to the overlapping printheads to form pixels printed by overlapped ejection channels in dependence on the position of the pixel within an overlapped region of the printheads and in dependence on the predetermined optical density of the pixel, wherein, for at least one pixel in the overlapped region, the total volume of ink ejected by the overlapped channels is greater than that required if that pixel were formed by a single ejection channel.
Inventors:
Clippingdale, Andrew John
Bacon, robin timothy
Bacon, robin timothy
Application Number:
JP2016531053A
Publication Date:
November 14, 2018
Filing Date:
November 19, 2014
Export Citation:
Assignee:
Tone Jet Limited
International Classes:
B41J2/06; B41J2/01; B41J2/205
Domestic Patent References:
| JP2013528132A | ||||
| JP2010269527A | ||||
| JP2010274485A | ||||
| JP2008126418A | ||||
| JP2013103439A | ||||
| JP2010137553A |
Foreign References:
| US20040051770 |
Attorney, Agent or Firm:
Ikeda adult
Junichiro Sakamaki
Masakazu Noda
Kazuhiro Yamaguchi
Junichiro Sakamaki
Masakazu Noda
Kazuhiro Yamaguchi