JP2008026874A5

JP2008026874A5 -

Info

Publication number: JP2008026874A5
Application number: JP2007149154A
Authority: JP
Filing date: 2007-06-05
Publication date: 2010-07-15

Claims

An image forming apparatus control method comprising:
A reading step that includes a latent image portion and a background portion, and reads a manuscript in which copy restriction information for limiting the number of times of copying and a copy-forgery-inhibited pattern which is emphasized in the latent image portion when copied;
A decoding step of decoding the copy restriction information given to the document image read in the reading step;
A removal step of removing the tint block from the document read in the reading step;
An update step for updating the copy restriction information decrypted in the decryption step;
Forming the copy restriction information updated in the update step on a sheet together with the image in which the copy-forgery-inhibited pattern is removed from the document image in the removal step;
A control method for an image forming apparatus, comprising:

A tint block generation step for generating tint block image data representing the tint block;
The combining step includes combining the copy restriction information updated in the updating step and the copy-forgery-inhibited pattern image data generated in the copy-forgery-inhibited pattern generation step into an image in which the copy-forgery-inhibited pattern is removed from the document image in the removing step. Item 8. A method for controlling an image forming apparatus according to Item 1.

2. The method of controlling an image forming apparatus according to claim 1, wherein in the updating step, a copy allowable number included in the copy restriction information is subtracted.

2. The method of controlling an image forming apparatus according to claim 1, wherein when the copy restriction information is not given to the document read in the reading step, the background pattern is not removed by the removing step.

2. The control method for an image forming apparatus according to claim 1, further comprising a permission step of permitting an operator to manually set an update value of the copy restriction information in the update step.

An encryption step for encrypting the copy restriction information after the update in the update step, wherein the forming step combines the encrypted copy restriction information with the image from which the copy-forgery-inhibited pattern has been removed in the removal step; The method of controlling an image forming apparatus according to claim 1.

A reading apparatus that includes a latent image portion and a background portion, and reads a manuscript in which a copy-forgery- enhanced background pattern in which the latent image portion is emphasized and a copy restriction information that restricts the number of copies are added to the copy image;
A decoding unit for decoding the copy restriction information attached to the document image read by the reading device;
A removing unit that removes the background pattern from the document read by the reading device;
An update unit for updating the copy restriction information decoded by the decoding unit;
A combining unit that forms the copy restriction information updated by the updating unit on a sheet together with an image in which a background pattern has been removed from the original image by the removing unit;
An image forming apparatus comprising:

An image forming apparatus control method comprising:
A first setting step for setting copy restriction information for restricting the number of copies for image data to be printed;
A second setting step including setting a copy-forgery-inhibited pattern including a latent image portion and a background portion to emphasize the latent image portion to the copy image when copied;
A combining step of combining the copy restriction information and the copy-forgery-inhibited pattern image data representing the copy-forgery-inhibited pattern with the image data;
An image forming step of forming an image on a sheet based on image data obtained by combining the copy restriction information and the copy-forgery-inhibited pattern image data;
A control method for an image forming apparatus, comprising:

9. The image forming method according to claim 8, further comprising: an encryption step for encrypting the copy restriction information set in the first setting step, wherein the combined step combines the encrypted copy restriction information with the image data. Control method of the device.