Patent ID: 7330677

Claim:
An image-forming apparatus comprising: an input unit configured to input an image-forming job including image information corresponding to a plurality of pages and predetermined processing condition information; an image-forming unit configured to form an image on a sheet on the basis of the image information of the image-forming job; a first sheet-processing unit configured to process a sheet on which an image is formed by the image-forming unit; a second sheet-processing unit configured to process a sheet on which an image is formed by the image-forming unit; an electrical power control unit configured to control electrical power supply to the first sheet-processing unit and the second sheet-processing unit; and a determining unit configured to determine whether or not sheet processing for the image-forming job is to be carried out by one of the first sheet-processing unit and the second sheet-processing unit on the basis of the processing condition information included in the image-forming job input by the input unit, wherein the electrical power control unit shuts off electrical power supply to the first sheet-processing unit responsive to the determining unit determining that sheet processing by the first sheet-processing unit is not carried out for a first amount of time, and wherein the electrical power control unit shuts off electrical power supply to the second sheet-processing unit responsive to the determining unit determining that sheet processing by the second sheet-processing unit is not carried out for a second amount of time.