| 摘要 |
PROBLEM TO BE SOLVED: To limit copy processing about an optional original image by adding a prescribed mark to an inputted image signal, forming an image to which the mark is added, having a means which outputs it on a recording medium and performs confirmation and changing image forming methods when the mark is attached. SOLUTION: The change of an image forming method is selected among blackening the entire image, suspending processing and signaling a message. When an image processor outputs a security document, an operating part 300 urges a user to decide whether or not an output image is a security document and adds a mark based on a prescribed rule with yellow toner that has a low human visual sensitivity characteristic in the case of security treatment. Although the mark is preliminarily registered on a ROM 28, it is also acceptable to register and update it on a RAM 29, etc. If the mark is read when copy processing is started and a scanner part first reads an original, a normal copy operation is suspended and an operation that is necessary for security maintenance is performed. |
