Patent · US Active

Halftoning printing with a page-wide-array printer

US8848251B2 · kind B2 · utility

2Cited by
1References
15Claims
0Family size

Assignee

Inventors

Key dates

Filing dateJan 30, 2013
Grant dateSep 30, 2014
Priority date
Expiry dateJan 30, 2033

Classification

  • Technology area (CPC H)Electricity
  • CPC primaryH04N1/4052
  • WIPO fieldAudio-visual technology
  • WIPO sectorElectrical engineering

Abstract

A page-wide-array printer has a print unit including an array of print-heads, wherein a printing direction is defined by a relative movement between the print unit and a print medium during a printing process. The page-wide-array printer receives a continuous tone image and divides the continuous tone image into a series of slices along a printing direction. Halftone image data is generated from each of the slices using error diffusion halftoning. The error diffusion halftoning comprises processing, with regard to error diffusion, each slice pixel-by-pixel following a processing pattern mainly oriented along a main processing direction which is parallel to the printing direction. The page-wide-array printer prints the halftone image data along the printing direction.

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