Redundant nozzle dot matrix printheads and method of use
US5640183A · kind A · utility
91Cited by
9References
7Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 20, 1994 |
| Grant date | Jun 17, 1997 |
| Priority date | — |
| Expiry date | Jul 20, 2014 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/145
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for ink-jet printing provides a redundancy strategy. A number of drop generators within the printhead is added to the standard array, providing redundant orifices in the nozzle plate at the ends of each column of orifices. In operation, the printhead is shifted regularly or pseudo-randomly such that a different set of nozzles prints adjacent swaths or pixels of a swath in multi-pass or multi-dot per pixel printing.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.