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Enlargement of Character Raster Patterns Without Character Corner Rounding

IP.com Disclosure Number: IPCOM000060483D
Original Publication Date: 1986-Apr-01
Included in the Prior Art Database: 2005-Mar-08

Publishing Venue

IBM

Related People

Authors:
Czyszczewski, JS Muhlbauer, LB [+details]

Abstract

A method is described in which the inside corners of a character remain sharp when the character raster pattern is enlarged and the ragged edges are made smooth. More specifically, this method deals with the preprocessing that is performed to enlarge characters without a significant reduction in print quality on printers that can scale a fixed-size character raster pattern. The term "character raster pattern" is used to describe the arrangement of pels (picture elements) or ink dots that represent the shape of a character to be printed. The word "corner" is used in two ways. A character corner is a point where the lines or arcs that describe the outline of the original artwork character meet at different angles.