| 摘要 |
PURPOSE:To attain an output of a printed matter almost as usual by providing an identifier to the printed matter without being recognized by the user at the print-out and to identify the image forming device from an identifier of a printed matter when an output device is checked. CONSTITUTION:Upon the receipt of an output request from a host device and of information, picture processing forming picture data is executed based on character code information and a control section gives a command to a printer driver to form picture data onto a recording medium. In this case, a delicate revision is applied to the picture data to drive a print drive section to print out a printed matter. After the processing of the picture data, a drive speed of a motor or the like is changed to give a deformation to a print picture to a degree of not discriminated by eyes. For example, a print oscillator 31 decreases the generated frequency to 1/n to frequency-divide the frequency to a frequency corresponding to the drive speed of the motor at a frequency divider circuit 33. Then a PLL circuit 34 stabilizes the frequency to drive the motor via the motor driver 35. |
