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:
Feb. 24, 2004
Filed:
Jan. 29, 1999
Douglas Richard Becker, Ayer, MA (US);
Richard A. Dermer, Issaquah, WA (US);
Dennis Mercer, Auburn, NH (US);
Adobe Systems Incorporated, San Jose, CA (US);
Abstract
Methods and apparatus implementing a technique for forming a trap polygon which does not interfere with the print quality of other trap polygons or objects. Edges in close proximity to a color transition edge (“CTE”) are checked for potential interference. A trap polygon is formed for the CTE that avoids any interfering edges or trap polygons for those edges. The technique can be applied to form a trap polygon for each edge in a page to be printed. In general, in one aspect, forming a trap polygon for trapping a color transition edge, where the trap polygon has an associated trap color determined by colors defining the color transition edge, includes: identifying one or more potentially interfering edges which intersect a keep away zone defined by the color transition edge; screening the potentially interfering edges to identify interfering edges which are part of an object which is of a significantly different color than the trap color; and forming a trap polygon for trapping the color transition edge including shaping the trap polygon to avoid overlapping objects and any trap polygons corresponding to any interfering edges.