Patent ID: 7085508
Filing Date: 2006-08-01
Classification: G03G

Abstract:
1. A timing controller to control a timing for performing a desired operation directly or indirectly on a belt-like member at least at two operating positions including a first operating position and a second operating position separated in a circumferential direction of the belt-like member driven by a drive roll, a distance between the first operating position and the second operating position being set to a multiple of a perimeter of the drive roll, the timing controller comprising: a clock generator to generate a clock signal having a constant period in accordance with a rotation of the drive roll; a counter to count the clock signal generated by the clock generator, wherein the counter counts the clock signal generated by the clock generator for a number corresponding to the multiple of the perimeter of the drive roll, thereby an operation timing at the second operating position is synchronized with an operation timing at the first operating position; a base-clock generator to generate a base-clock signal at a period shorter than the clock generator; and a base-clock counter to count a number of the base-clocks generated by the base-clock generator during the period from a first operation timing signal for deciding the operation timing at the first operating position to the clock signal generated by the clock generator, wherein a count value of the base-clock counter is used to correct an operation timing at the second operating position.