Print cartridge bidirectional alignment in carriage axis
US5250956A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Oct 31, 1991 |
| Grant date | Oct 5, 1993 |
| Priority date | — |
| Expiry date | Oct 31, 2011 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/142
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
Apparatus and techniques are disclosed for aligning the operation of the ink jet printheads of a multiple printhead ink jet swath printer, and particularly for aligning the operation of the printheads along the carriage scan axis. The relative positions of vertical test line segments printed by the cartridges at a fixed swath position are determined with an optical sensor. The relative position information is utilized to calculate horizontal alignment corrections for the printhead cartridges which are utilized to adjust the horizontal offset shifts provided for the swath data and to adjust the timing of the firing of the ink jet nozzles of the printhead cartridges.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.