Patent ID: 7212226
Filing Date: 2007-05-01
Classification: G03G

Abstract:
1. An image density control apparatus for an image forming apparatus comprising; a memory configured to store test pattern data, the test pattern data being configured for detecting a density of image data formed on a photo conductor from which a latent image is transferred onto a recording medium; a laser unit configured to form a plurality of test patterns on the photo conductor by utilizing a plurality of first laser powers based on the test pattern data stored in the memory; a detector configured to illuminate each test pattern formed on the photo conductor by the plurality of the first laser powers, to receive each light intensity reflected by the test patterns, and to provide output values corresponding to each received light intensity, the output values defining a first range of output values; a controller configured to compare each output value with a first predetermined value; the controller further configured to determine a laser power to be used based on the first predetermined value, when the first predetermined value falls within the first range of the output values.