| 摘要 |
PROBLEM TO BE SOLVED: To provide a printing apparatus outputting a document capable of easily discriminating a user without leaving unnecessary data on an image printing surface and having not only control effect but also the user friendliness to a user and having function judging the possibility of printing on the basis of a printing ratio. SOLUTION: In a printing apparatus capable of applying printing to both surfaces of transfer paper, a user discriminating data memory means and a printing specification setting means for setting the printing specifications of user discriminating data are provided and the user discriminating data is printed on the rear surface of the transfer paper. In a printing apparatus shared on a network, a user discriminating data memory means storing the user discriminating data and a permission printing ratio showing the restriction of a user's printable printing ratio, a printing ratio calculating means for preliminarily calculating the printing ratio of a printing image, a printing ratio comparing means for comparing the calculated printing ratio with the permission printing ratio and a printing certifying means for determining either one of the permission and non-permission of printing due to image data are provided.
|
