Patent ID: 6473112
Filing Date: 2002-10-29
Classification: B41J,H04N

Abstract:
An apparatus for forming an image on a recording material, comprising:an image forming section to perform an image writing operation for writing scanning lines in a main-scanning direction onto said recording material, while conveying said recording material in a conveyance direction of said recording material; an offset detecting section to detect an amount of a positional offset of said recording material, said positional offset being a positional deviation from a predetermined reference-position for said recording material in a direction orthogonal to said conveyance direction of said recording material; and a mode-selecting section to select either an automatic writing-position determining mode, in which said image forming section commences said image writing operation in said main-scanning direction from a writing-start position determined on the basis of a detected result of said offset detecting section, or a predetermined writing-position determining mode, in which said image forming section commences said image writing operation in said main-scanning direction from a predetermined writing-start position established in advance; wherein, when said offset detecting section can detect said positional offset of said recording material, said mode-selecting section automatically selects said automatic writing-position determining mode, while, when said offset detecting section cannot detect said positional offset, said mode-selecting section automatically selects said predetermined writing-position determining mode, and said image forming section performs said image writing operation in a mode selected by said mode-selecting section.