Method for determining vertical misalignment between printer print heads
US6478401B1 · kind B1 · utility
22Cited by
33References
17Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jul 6, 2001 |
| Grant date | Nov 12, 2002 |
| Priority date | — |
| Expiry date | Jul 6, 2021 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2135
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method for determining vertical misalignment between first and second print heads involves printing a test pattern of first and second alternating slanted blocks extending horizontally. The first slanted blocks are printed by the first print head and the second slanted blocks are printed by the second print head. A known edge angle of the first and second slanted blocks is substantially the same. A sensor is moved across the test pattern for evaluating misalignment.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.