| 摘要 |
An image forming apparatus includes an expansion unit to expand image data to first matrix data including a plurality of rows and columns, a first mask unit to mask the first matrix data by performing a logical operation on the first matrix data and a mask pattern, a second mask unit to select any one of first processing to thoroughly mask a unit area of the first matrix data and second processing to mask a unit area of the first matrix data by using the first mask unit, with respect to each mask unit area by using third matrix data including a plurality of mask unit areas that is formed of the same number of rows and columns as the mask pattern, and an image formation unit to form an image by modulating the first matrix data that is masked by the second mask unit into an optical writing signal. |
