Printing apparatus for increasing efficiency in transmitting image data between internal control units
US6147766A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Feb 6, 1998 |
| Grant date | Nov 14, 2000 |
| Priority date | — |
| Expiry date | Feb 6, 2018 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K2215/0077
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a printing apparatus, a printer control unit transmits image data to an engine control unit for a respective one of a plurality of bands sent by a host computer. The image data of the respective one of the plurality of bands defines a pattern of "M" dots by "N" lines related to an image of a corresponding band where both "M" and "N" denote an integer. The printer control unit transmits a band information command to the engine control unit prior to the transmission of the image data. The band information command includes a band height, a print start dot position and a print end dot position, the band height indicative of a quantity of the image data transmitted, the print start dot position indicative of a position of a print start dot with respect to all the "N" lines in the image, and the print end dot position indicative of a position of a print end dot with respect to all the "N" lines in the image.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.