Ink jet printing apparatus, ink jet printing method, program, and printing medium
US6896348B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 22, 2003 |
| Grant date | May 24, 2005 |
| Priority date | — |
| Expiry date | Jul 22, 2023 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J2/2054
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
The print head is scanned over a printing medium in a sub-scanning direction different from a direction in which the nozzles are arranged. The printing medium is conveyed by a predetermined amount K (where K=a×L (a is a natural number and L is the size of the gradation patterns in the direction in which the nozzles are arranged) or K=L/b (b is a natural number)) in a direction in which the nozzles are arranged, between a preceding scan and a next scan of the print head. Correspondences between image data and the plurality of nozzles are shifted in the direction in which the nozzles are arranged. The operated dot patterns are changed so as to allow the selective use of a plurality of different dot patterns indicating the same gradation value.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.