| 摘要 |
PURPOSE:To make the record of high quality possible by lessening and uniformizing the electrostatic capacity of wiring, by arranging plural connecting points in an almost one line to make the length of electrical wire shortened and almost equalized. CONSTITUTION:Connection points 19 are arranged on a printed board 15 by dividing them 19 into 3 groups I -III and the connection points attached with the same symbol are mutually connected with each other on the board 15 by through holes. The connection pattern shown with dotted lines are connected on the back side of the board 15 and the distribution density thereof is raised. One-third the recording electrode 17 on left side is connected to the connection electrode I , one third thereof on central part to the connection electrode II and one third thereof on right side to the connection electrode III, and the equalization and shortening of the length of electrical wire 18 and the reduction of the number of electrodes to be bundled are provided. Further, because the lengths of connection pattern on the substrate are respectively almost equalized, the electrostatic capacity between respective electrodes becomes almost equalized. |
