JPS5620385A - Information processor - Google Patents

Abstract

PURPOSE:To increase a recording speed while improving picture quality by limiting the number of recording element driven at a time, by controlling the transmission speed of a picture signal on the basis of a frequency in occurrence of information to be recorded. CONSTITUTION:Series-parallel converting circuit 17 receives a quantized picture signal in time series and sends bundles of a constant number of bits to buffer memory circuit 19. Here, recording frequency detecting circuit 18 that detects a frequency in recording of black is provided so as to control quantizing circuit 16 and timing control circuit 24, varying the read speed of original 13 in accordance with the recording frequency. Then, recording member control circuit 21 puts recording member 22 into operation at a decreased recording speed when there is more black information or at an increased recording speed when more white information. Timing control circuit 24 sends a timing signal to original driving circuit 25 an recording paper driving circuit 26 to feed original 13 and recording paper 23 in the subscanning direction, line by line. Recording position detecting circuit 27, brought under the control of circuit 24, detects the movement extent of recording paper driving part 26a and outputs its output signal to buffer memory control circuit 20. Then, the following line is read and recorded.