Variable rate ink jet endorser
US6533381B1 · kind B1 · utility
1Cited by
4References
6Claims
0Family size
Inventors
Key dates
| Filing date | Oct 29, 1999 |
| Grant date | Mar 18, 2003 |
| Priority date | — |
| Expiry date | Oct 29, 2019 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/102
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A method and system for ink jet printing of characters in a variable rate document transport creates a correct column pitch for the document speed. An endorser control system includes a processor having a DMA unit for retrieving column data at a column data rate wherein the processor controls the variable document travel rate. The system further includes a sequencer for converting the column data into dot data. The DMA unit in conjunction with a compare match timer writes the column data from the processor memory to the sequencer at the specified column data rate.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.