Ink jet printing apparatus and ink jet printing method
US7762640B2 · kind B2 · utility
16Cited by
5References
19Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 3, 2004 |
| Grant date | Jul 27, 2010 |
| Priority date | — |
| Expiry date | Jun 6, 2025 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/04593
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
One pixel is sub-divided on the basis of ejection ports. Pixel patterns are provided at respective quantization levels, each of which are defined using dots having different sizes. Image data is processed using a pixel pattern selected according to the type of printing medium and image quality to be achieved, and printing is performed using the image data. Only ejection ports ejecting ink droplets in the same size are driven at the same timing for ejection.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.