Automatic Compensation of Digital Fonts in Laser-Driven Printers
Original Publication Date: 1984-Mar-01
Included in the Prior Art Database: 2005-Feb-03
This invention relates to a method for minimizing the bleed-through of black characters being swept out by the white beam of a laser-driven printer. The method steps include (1) thickening the black character by offset super-imposition of the character bit array upon itself by a predetermined amount; and (2) substituting subarrays having additional stroke thickness for selectively thin subarrays. Suppose it is desired to translate high resolution fonts to low resolution fonts, say, from 800 dots per inch to 240 dots per inch. When the converted fonts are printed, the stroke widths, as printed, are thinner than they should be. Indeed, very thin lines such as those one pel (picture element) in width completely disappear.