Patent ID: 9042547
Filing Date: 2015-05-26
Classification: G06F

Abstract:
1. An image forming apparatus for printing an image on a sheet, comprising: an image forming unit that prints the image on the sheet based on an image data; a memory unit that stores image data of an authenticating print job which needs an authentication before the image data is printed on the sheet by the image forming unit; a mode detecting unit that detects a transition from a first operating mode to a second operating mode; and an encryption unit that encrypts the image data in the memory unit when the transition from the first operating mode to the second operating mode is detected, wherein the image data of the authenticating print job is printed after the authentication without an encryption to the image data by the encryption unit while the transition is not detected, and the encryption unit encrypts only the image data of the authenticating print job upon the image data being unencrypted when the transition from the first operating mode to the second operating mode is detected.