Ink jet apparatus, ink jet apparatus driving method, and storage medium for storing ink jet apparatus control program
US6416149B2 · kind B2 · utility
21Cited by
3References
20Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Apr 26, 2001 |
| Grant date | Jul 9, 2002 |
| Priority date | — |
| Expiry date | Apr 26, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2202/10
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Three types of ink droplets, that is, large, medium and small droplets are ejected to produce a gray-scale image, and three drive waveforms are prepared for each of the three types of ink droplets. The drive waveform to print a dot is selected by judging whether there is ink ejection immediately before and/or after the dot to be printed and the type of each droplet ejected immediately before and/or after the dot to be printed. An optimum drive waveform can be selected according to vibrations in the ink channel. Thus, high-quality printing is achieved without partially unstable dots and changes in the ink droplet volume.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.