Print quality improving apparatus for high speed printer

摘要

A raster unit (SRA) for generating low-definition matrix-like image data and an image-reproducing unit (ZG) for reproducing high-definition matrix-like image data are coupled to each other by means of a functional unit (HSC) which contains a register unit (PB-FIFO) to which data words of the image data can be fed. A decision unit (DUC) extracts from the register unit (PB-FIFO) the data necessary for converting a low-definition pixel (A1..A16) to be converted. The matrixes of high-definition pixels (HP) are emitted by an output unit (OUTC) to the image-reproducing unit (ZG). Preferably a plurality of pixels (P) are converted in parallel.