| 摘要 |
<p>PURPOSE:To suppress the ineffective power and to simplify the drive circuit, by eliminating the separation diode for each cross-point of matrix constituting the print head and giving the clamp function at turning off of the driver circuit. CONSTITUTION:The matrix constituting the print head of heat sensing facsimile is split, and 1024-dots are constituted with the 8-groups of 16X8 submatrices. One row 31 among the longitudinal rows is selected at present and a current is fed to the cross point with the information of transversal column(driver), for heating print. The driver circuit 35 acts like a clamper with a flowing-out potential 0.2-0.3 times the voltage of selector (longitudinal row), by giving ground via a transistor at ON and detaching this ground at OFF.</p> |
