Patent · US Expired

Two-way print apparatus and print method

US7032991B1 · kind B1 · utility

2Cited by
12References
28Claims
0Family size

Assignee

Inventors

Key dates

Filing dateSep 29, 2000
Grant dateApr 25, 2006
Priority date
Expiry dateSep 29, 2020

Classification

  • Technology area (CPC B)Performing Operations; Transporting
  • CPC primaryB41J19/147
  • WIPO fieldTextile and paper machines
  • WIPO sectorMechanical engineering

Abstract

Two sets of recording heads for applying ink of cyan (C), magenta (M), and yellow (Y) are arranged in symmetry in a scanning direction and orders of colors C and M ejected onto a pixel of a secondary color are set to symmetric orders (C→M and M→C). This makes the application orders of ink symmetric in each pixel of secondary color and thus there is no difference between application orders in formation of the pixel by either forward or backward scanning, whereby occurrence of uneven color due to the application orders of ink can be reduced even in execution of two-way color print.

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