Correction system for droplet placement errors in the scan axis in inkjet printers
US6364447B1 · kind B1 · utility
Assignee
Inventors
Key dates
| Filing date | Feb 18, 2000 |
| Grant date | Apr 2, 2002 |
| Priority date | — |
| Expiry date | Feb 18, 2020 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J19/145
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and apparatus for correcting for drop placement errors due to relative rotation between an inkjet printhead mounted in a printer carriage and the print media to be printed on comprises first determining the relative contribution to the drop placement error due to rotation of the printhead about the scan axis (Y axis error), then, with respect to any determined Y axis error, applying the same magnitude and sense of correction for drop placement errors while printing in both a first scanning direction of the carriage and while printing in a second scanning direction of the carriage. Errors due to rotation about the Z axis are also corrected for. Preferably the errors are determined by printing and scanning a test pattern.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.