| 摘要 |
<p>PURPOSE:To eliminate the irregularity of the printing density caused by the wiring resistance of a print head. CONSTITUTION:Driving elements IC1, IC2 are provided at both ends of a plurality of light emitting device arrays LA1-LA40 arranged on a straight line. One of the driving elements is connected to the light emitting devices LED1 LED3,... of odd number order, while the other is connected to the light emitting devices LED2, LED4,... of even number order. Accordingly, the irregularity of the current by the wiring resistance is mutually corrected between the light emitting device of odd number order and the adjacent light emitting devices of even number order, so that the printing density is averaged.</p> |
