High resolution simulation printing by printing adjoining pels
US5631746A · kind A · utility
7Cited by
7References
4Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1994 |
| Grant date | May 20, 1997 |
| Priority date | — |
| Expiry date | Nov 15, 2014 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0094
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
Printer (1) having the capability of printing at 600.times.2400 dpi resolution simulates 1200.times.1200 dpi resolution by logically examining two lines of a 1200.times.1200 bit map and printing identically when possible and half black when only one of the two vertically adjacent bits signifies black, the bits for half printing being located to the right if the preceding bit is white and being located to the left if the preceding bit is black. This places the bits for half printing beside black bits and thereby extends the length of black printed, thereby reducing high frequency effects.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.