| 摘要 |
The present invention allows a specific image to be easily changed when using a counter in the case of adding a specific image. A specific image adding section 12 for adding the specific image to inputted image data includes a first counter 15 for deciding positions of a main scanning direction and a vertical scanning direction and a second counter 16 for specifying a form of the specific image. The second counter 16 counts up addresses of pixels counterclockwise with a starting point at one corner on a matrix made up of the main scanning direction and vertical scanning direction. If the first counter 15 counts a predetermined count value, the second counter 16 starts. When a maximum value of the count value of the second counter 16 is equal to or less than a count set value, an image is formed on each of the pixels. The pixel on which the image is formed is changed and the form of the specific image is also changed by changing the count set value.
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