Printing apparatus and image output control apparatus for processing image data using a dither pattern
US6646759B1 · kind B1 · utility
Assignee
Inventor
Key dates
| Filing date | May 14, 1997 |
| Grant date | Nov 11, 2003 |
| Priority date | — |
| Expiry date | May 14, 2017 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/1822
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
A printing apparatus is made up of a communicating device for performing a two-way communication with a host system and a dither processing unit for performing a dithering process to inputted image data and forming binary image data on the basis of information regarding an image output transmitted to the host system through the communicating device. The information regarding the image output is at least one of a drawing output of figure/characters, a color, and a gradation expression output. The printing apparatus further has a unit for receiving obtaining instruction information to obtain dithering pattern information in the dither processing unit from the host system through the communicating device and a unit for transmitting the dithering pattern information to the host system through the communicating device in response to the obtaining instruction.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.