Patent Document ID: 5459828
Application ID: 07561298
Patent Status: 1

Claim One:
1. A printer processor implemented method for producing a raster font from a contour font defined by a list of points connected by curves, said raster font suitable for printing on a selected printer having known reproduction characteristics, including the steps of: a) deriving for a contour font a set of font metrics and character metrics of a character in the font defined in terms of arbitrary font units; b) scaling a character contour defined in arbitrary font units to a selected size in units of pixels; c) altering thickness of character strokes by adjusting vertical and horizontal coordinates of each point defining the character contour in directions defined by a vector normal to the character contour at each point, by an amount required to obtain a desired thickness from the measured font metrics and character metrics, and an amount required to add to difference thickness thereto in accordance with the selected printer reproduction characteristics, said alteration amounts together causing the vertical and horizontal strokes to be sufficiently close to an integer number of pixels or half pixels so as to cause subsequent numerical rounding to produce uniform results across the font; d) grid aligning the contour of each character so that leading and trailing edges, and top and bottom edges of the contour of each character fall on whole or half pixel positions; and e) applying a rasterization function to the contour to convert each contour font character to a bitmap.