Ink jet printing method and apparatus
US6471323B2 · kind B2 · utility
7Cited by
10References
11Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Aug 30, 2001 |
| Grant date | Oct 29, 2002 |
| Priority date | — |
| Expiry date | Aug 30, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/16508
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An ink jet printing method and apparatus using a color ink and a print performance improving ink which minimizes an image quality degradation due to blank lines formed by failed or faulty nozzles. This system enables the use of a print head even with failed or faulty nozzles by minimizing the image quality degradation and extends the life of the print head before replacement. The print performance improving ink is not ejected and landed near a blank line, thus allowing the color ink dots near the blank line to spread and thereby making the blank line undistinguishable.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.