Binary Processing - Ricoh C217 Service Manual

8.2 BINARY PROCESSING

Binary processing resolves how to transform a line of "gray" pixels (the 4-bit
digital data from A/D conversion) into a line of black and white pixels in such
a way as to preserve the quality of the image.
The binary processing circuit produces 1-bit data (white or black pixels) from
the 4-bit output of the A/D converter, and sends it, as a serial signal to the
thermal head drive circuit. The binary process is different between the line
mode and the photo mode.
1) Line Mode: MTF (Modulation Transfer Function) Correction
2) Photo Mode: Dither Processing and Edge Emphasis Processing
(Edge Emphases Processing is selected only when the DIP-SW 101-6 is
turned on.)
C217 2-46 SM