Patent ID: 6650352
Filing Date: 2003-11-18
Classification: H04N

Abstract:
An image forming apparatus, comprising:at least one photosensitive member; at least one light source that repeatedly directs a moving beam of light across said at least one photosensitive member in a plurality of write lines; an electronic controller having a processing circuit and a memory circuit, said controller being configured to provide a data signal containing a plurality of PELs to said at least one light source so as to cause said at least one light source to turn on and off as said moving beam of light impacts said at least one photosensitive member in one of said plurality of write lines, thereby forming a plurality of dots upon said at least one photosensitive member, as according to information contained in said data signal; said electronic controller being further configured to adjust a length of said plurality of write lines by changing a number of clock pulses for at least one of said plurality of PELs, such that said plurality of write lines will each exhibit substantially the same length upon said photosensitive member; and said electronic controller being yet further configured: in a first write line of said plurality of write lines, to select a first PEL position of said plurality of PELs of said first write line for changing a number of clock pulses, according to said data signal for said first write line; in a second, adjacent write line of said plurality of write lines, to select a second PEL position of said plurality of PELs of said second write line for changing a number of clock pulses, according to said data signal for said second write line; wherein said first position is offset by a predetermined number of PELs from said second position along a direction of said plurality of write lines.