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:
May. 16, 1995
Filed:
Nov. 06, 1992
John L Ingraham, North Chelmsford, MA (US);
Foster M Fargo, Jr, Lincoln, MA (US);
James M Enge, Lowell, MA (US);
Iris Graphics Inc., Bedford, MA (US);
Abstract
A method and apparatus for producing a color half-tone image from a digital data file are disclosed. The method includes the step of filling a pattern of dots for each of a plurality of colors, wherein the configuration and size of dots in a macropixel varies as a function of input density for each of the plurality of colors. The step of filling includes the step of producing a plurality of multiple droplet dots in less than the total available pixel locations in a macropixel in at least part of a range of input densities. The apparatus performs the operations of the method. The pixels are of variable size as a function of the number of droplets deposited at the pixel locations.