| 摘要 |
PURPOSE:To prevent crime by easily searching the source of a sample even when the object inhibiting copy is copied. CONSTITUTION:A ROM previously stores regulation information (such as a machine number and manufacture time or the like) to regulate the own device and according to the number of lines in image data obtained by reading an original, a control part 312 detects an image recording position and controls the arrangement of dots in the stored regulation information with the angle of a screen according to the detected image recording position so as to output a screen angle control signal to a PWM modulation circuit 307. According to this screen angle control signal, the PWM modulation circuit 307 integrates the regulation information while controlling this screen angle in the case of a color Y. |
