Method for compressing print data for storage and recording of a print page for later reproduction, in which compression does not require overlaying and print quality is not noticeably impaired

摘要

Method in which the print data, which contains length coded sections and scanned sections, are stored in rows with the scanning or raster points in the scanning sections perpendicular to the row direction reduced by a factor N, where N is equal to 2 or a multiple of 2. Reduction takes place in cycles for yellow, cyan, magenta and finally black until a required compression ratio is achieved.