COMBINATION CIRCUIT OF LSU AND LED IN PRINTER

摘要

a horizontal sync. generator(107); a CPU(101); a delaying unit(105) for generating a clock enable signal; a clock generator(104); a clock demultiplier(106); a parallel/serial converter(103) for converting a parallel image data from the CPU with a demultiplied clock signal to serial image data; a test pattern generator(107); a logic gate(108) for a logic operation of the serial image data and the test pattern image data; a LED head controller(109) for generating a strobe signal for LED and a data latch signal; and a LED head unit(110) for printing the image sequentially.