Patent ID: 8264700
Filing Date: 2012-09-11
Classification: H04N

Abstract:
1. An image forming apparatus configured to form an electrostatic latent image on a surface of a photosensitive member with a laser beam scanning on the surface of the photosensitive member, the image forming apparatus comprising: a generation unit configured to generate a high-speed clock and a low-speed clock mutually different in frequency; a scanning unit configured to perform scanning of the laser beam in a main scanning direction based on the low-speed clock; a detection unit configured to detect the laser beam during a scanning operation performed by the scanning unit; a first shift register unit configured to receive a detection signal from the detection unit according to the high-speed clock; and an output unit configured to receive a parallel output of the first shift register unit in synchronization with the low-speed clock and to output detection timing of the laser beam as a detection signal synchronized with the low-speed clock and a value corresponding to a shift number defined by the high-speed clock.