Patent ID: 6208449
Filing Date: 2001-03-27
Classification: G06K

Abstract:
An image forming device capable of altering a magnification of an image in a main scanning direction by making a frequency of an image clock variable, comprising:a first output means which outputs a lighting instructing signal for instructing that a light beam emitted from a light source be turned on, on the basis of main scanning signals output from a scan sensor for each main scanning;a second output means for outputting a light amount control instructing signal for instructing that control of an amount of light of the light beam be executed, on the basis of the main scanning signals output for each main scanning;and a control means for controlling said first output means and said second output means so that periods from the output of said main scanning signals until the outputs of said lighting instructing signal and said light amount control instructing signal become uniform regardless of changes in the frequency of said image clock.