LED DRIVING CIRCUIT AND LED PRINTING HEAD

摘要

PURPOSE:To provide an LED driving circuit and an LED printing head which can simplify the construction of a driver IC corresponding to an LED array and dispense with data lines for gradation data between the driver ICs. CONSTITUTION:A signal based on a gradation data signal outputted from a strode time control IC 4 is common to driver ICs 1, and by the logical output of this signal and a signal for turning on sequentially the driver ICs 1, LEDs 21 of each LED array 22 are made to light sequentially.