JPS55112074A - Electrostatic recording device - Google Patents

Abstract

PURPOSE: To simplify the recording device such as the facsimile or the like by providing the electrode rows arranged into two zigzag rows in the secondary scanning direction and with the space secured in correspondence to the scanning density and then securing the driving via the same electrode driving circuit even in case the scanning density may be switched.

CONSTITUTION: Recording electrodes S1∼S32 on the recording head surface perform the recording of the scanning density of 4line/mm, and each row of the electrodes are arranged into the zigzag form to secure 4line/mm in the secondary scanning direction and with space L secured in the main scanning direction each. On the other hand, recording electrodes S01∼S032 perform the recording in the scanning density of 8line/mm, and electrodes S1, S2, S01 and S02 are connected to driving circuit X1 in the common line direction. And each odd and even number of the two electrode groups are connected to common lines Y1∼Y4. Picture signal D of secondary scanning direction 32 bits supplied is distributed into the even and odd numbers of 16 bits each through distribution circuit 1 and then applied to line- direction electrode driving circuit 6 of X1∼X16 via serial-parallel converter circuit 2 and latch circuit 5. And the selection is given to row-direction lead wires Y1∼Y4 is caried out via line density switching signal (a) or (b) plus electrode row selection signal (c) or (d) each.

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