Patent ID: 8531745
Filing Date: 2013-09-10
Classification: G03G

Abstract:
1. An image forming apparatus comprising: an image forming unit configured to form an image on an image carrier based on an inputted image signal, and to transfer the image formed on the image carrier onto a sheet; a first density detecting unit configured to detect a density of the image transferred onto the sheet; a second density detecting unit configured to detect a density of the image formed on the image carrier; a first control unit configured to cause said image forming unit to form a first image corresponding to a test image signal onto the sheet; a generating unit configured to generate conversion data for converting the inputted image signal, based on the test image signal and the density of the first image detected by the first density detecting unit; a second control unit configured to cause said image forming unit to form a second image on the image carrier; a storing unit configured to store, as a reference density of the second image, a density of the second image detected by the second density detecting unit at a first timing; a correcting unit configured to correct the conversion data based on (i) the reference density of the second image stored by the storing unit and (ii) a density of the second image detected by the second density detecting unit at a second timing after the first timing; and a designating unit configured to designate, manually, a density value, wherein the second control unit causes the image forming unit to form the second image on the image carrier based on the density value designated by the designating unit, and wherein, in a case where the density value, which is designated by the designating unit, is less than a predetermined value, the second control unit causes the image forming unit to form the second image based on another density value that is higher than the density value designated by the designating unit.