| 摘要 |
An image forming system and a security printing method of the image forming system. The security printing method of the image forming system may include receiving print data in an image forming apparatus, determining whether the received print data includes an authenticated encryption code, and if it is determined that the print data does not include the authenticated encryption code, forming an image to include an image to indicate that the print may not be a print by security print. The security printing method have an advantage of performing a print operation to print data authenticated by a host device with no security application or even in print performance by Direct Printing, with strengthened security.
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