The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 23, 2013
Filed:
Mar. 11, 2011
Hirokazu Kasahara, Nagano, JP;
Hirokazu Kasahara, Nagano, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
In a printing device for discharging ink from a plurality of print heads and printing on a print medium, the print heads are arrayed in a direction orthogonal to a movement direction relative to the print medium so that overlapping areas are created which overlap in the movement direction. A change rate of the apportionment ratio between a first nozzle row of an upstream print head in the relative movement direction of the print medium and of a second nozzle row and a downstream print head in the ends in the overlapping areas is greater than the change rate of the apportionment ratio in the middle in the overlapping areas. Concentration irregularity occurring in the overlapping areas of the printed article can thereby be made inconspicuous.