Image processing apparatus and method
US8164793B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 29, 2009 |
| Grant date | Apr 24, 2012 |
| Priority date | — |
| Expiry date | Jul 12, 2030 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06K15/107
- WIPO fieldComputer technology
- WIPO sectorElectrical engineering
Abstract
In a multipass printing that performs a plurality of printing scans over a unit area of a print medium by using a leading head and a follower head, the multivalued image data for the leading head is distributed according to the print volume information for up to the preceding printing scan. Then, the multivalued image data for the leading head is subjected to the grayscale level reduction operation to generate binary data. Based on the binary data, the print volume information is updated, after which the multivalued image data for the follower head is distributed according to the print volume information. This causes a plurality of printing scans or a plurality of print heads, that print the same unit area, to have a correlation among them, with the result that dots on a plurality of planes when overlapped have an excellent scattering characteristic.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.