| abstract |
This print system comprises a characteristic storage section to store the characteristic data peculiar to the engine, a CPU to calculate, based on the characteristic data, the correction data for a certain clock counts after detection of the horizontal sync signal and the correction data for every time a certain time elapsed after that, a modulation data storage section to receive and store the correction data, a quartz oscillator to generate the basic clock, a timer to monitor the time, a counter to count the sync clock pulses, a modulation control section which refers to the correction data upon receipt of the horizontal sync signal, determines the modulation timing according to the timer or the counter and provides modulation instruction to a clock generator for every modulation timing and the clock generator to supply the sync clock obtained by modulation of the basic clock to the controller. |