IMAGE FORMING DEVICE, ITS IMAGE MASKING CONTROL METHOD AND RECORDING MEDIUM WITH PICTURE MASKING CONTROL PROGRAM RECORDED THEREON

摘要

PROBLEM TO BE SOLVED: To meet the demand of effectively using paper by loading an image to the nearest part to the end of the paper and to prevent toner from soiling the rear side of the next paper as the result of sticking to a transfer roller without being transferred to the paper when the position of the paper is deviated a little. SOLUTION: In accordance with an input mode of an image signal received from an image signal generation part 42, a CPU 70 switches an area for masking an image. In a printer mode where the image signal is inputted from a host computer, image masking signals/MASK 1 to 4,/VMASK for realizing forming of the image to the end of the paper are given to gate circuits 43 to 46 to expand the image to the nearest part of the end of the paper. In a mode where the image signal is inputted from an image reader, the image masking signals/MASK 1 to 4, /VMASK for realizing providing a margin in the periphery of the end of the paper are given to the circuits 43 to 46 to dare to restrict the area of the image.