| 摘要 |
PURPOSE:To make it possible to arrange wirings for connecting recording electrodes and record signal generating means with a density lower than a density of a parallel arrangement of the recording electrodes by arranging in parallel and in string form a plurality of recording electrodes on a narrow end part on a substrate whose widths at both end parts vary consisting of a flexible insulating material, and combining a plurality of flexible circuit boards on which the record signal generating means is mounted in a manner connectable with these recording electrodes electrically on a wide end part. CONSTITUTION:A recording electrode sheet 17 is constituted by combining two split electrode sheets 17A and 17B. The split electrode sheets 17A and 17B are respectively constituted of flexible printed circuit boards whose both end parts are different in width. On narrow end parts of the split electrode sheets 17A and 17B, a number of recording electrodes 17a are arranged in parallel at a fine pitch corresponding to an image density to be obtained so as to form split electrode strings ERp respectively. Here, the recording electrode 17a consisting of a number of man-magnetic conductive materials a is patterned with etching processing in parallel on a flexible insulating film 17b, for example, at a pitch of 84.6mum by keeping an interval of 40mum. |
