Patent · US Expired

Interlace printing process

US4967203A · kind A · utility

161Cited by
7References
16Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 29, 1989
Grant dateOct 30, 1990
Priority date
Expiry dateSep 29, 2009

Classification

  • Technology area (CPC G)Physics
  • CPC primaryG06K2215/111
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

Quality of printed images as produced by an ink-jet printer (10) is improved by staggering applications of ink dots (30) to pixel locations (36) such that overlapping ink dots are printed on successive passes of a printhead (16) and such that swaths (38) are partially printed on overlapping passes of the printhead. Quality of multi-colored or multi-shaded images is further improved by grouping pixels (36) into super pixels (42), and applying various combinations of colored ink dots to the various pixels within each super pixel in a staggered sequence.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.