Image processing apparatus
US5315382A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 19, 1991 |
| Grant date | May 24, 1994 |
| Priority date | — |
| Expiry date | Jun 19, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04N1/40087
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
It is determined whether an object pixel in entered image data resides on (a) part of a black character or line, (b) not on part of a black character or line but in close proximity thereto, (c) neither part of nor in close proximity to a black character or line. When it is determined that (a) holds, the object pixel is recorded using dark black ink only. When it is determined that (b) holds, a pixel comprising various color components is recorded using ink whose density is lower that that of ink having a designated density. When it is determined that (c) holds, namely that the object pixel is remote from a black character or line, the object pixel is recorded using the ink of the designated density.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.