Patent ID: 6288733
Filing Date: 2001-09-11
Classification: G03G,G06K,H04N

Abstract:
An image forming apparatus, comprising:a photoreceptor;exposure means having a power strength and for exposing the photoreceptor with a laser beam dot by dot so as to form a dotted latent image on the photoreceptor corresponding to image information;developing means for developing the dotted latent image with developer; anddot diameter correcting means for correcting a diameter of the dot formed on the photoreceptor, the dot diameter correcting means including,image patch producing means for forming a test image patch having a specific dot pattern on the photoreceptor with a laser beam by the exposure means,image patch detecting means for detecting a density level of the test image patch formed on the photoreceptor, wherein when the image patch producing means forms a reference image patch having the same specified dot pattern with a dot having a redetermined diameter, the image patch detecting means detects a reference density level of the reference image patch,memory means for storing the reference density level corresponding to the predetermined diameter of the dot, andcontrol means for comparing the detected density level of the test image patch with the reference density level and for controlling laser power strength of the exposure means so as to form the dot having the predetermined diameter.