Pairing of ink drops on a print medium
US5625390A · kind A · utility
13Cited by
10References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 30, 1995 |
| Grant date | Apr 29, 1997 |
| Priority date | — |
| Expiry date | Jan 30, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/142
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
An image transfer ink-jet printer employs an image receiving drum that rotates relative to an ink-jet array print head spanning the full width of the drum. A print head positioner moves the print head in precise increments to position adjacent scan lines of ink drops. Without affecting the overall scale of the image, adjacent pairs of scan lines are spaced at distances less than one nominal pixel width. Pairings within the range of 0.2 to 0.5 pixel widths are used, with optimal spacing at 0.35 pixel widths.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.