Patent ID: 9081524
Filing Date: 2015-07-14
Classification: G06F,G06K,Y02D

Abstract:
1. A printing system comprising an information processing apparatus and a printing apparatus, the information processing apparatus and the printing apparatus both being capable of being connected to each other through a network, the information processing apparatus comprising a printer driver that transmits a print job packet to the printing apparatus, the print job packet containing a print job described in printer description language, the printing apparatus comprising: an engine including a fuser; a main CPU that performs operation control of the engine, the operation control including energization control; a power supply portion that performs the following: providing power to the main CPU and delivering power to the engine by the main CPU performing the energization control while normal operation mode is ON; and shutting down power to the main CPU and the engine while power saving mode is ON; and a sub CPU that performs the following: receiving power from the power supply portion while power saving mode is ON; and giving a proxy response to the print job packet to activate the main CPU, the print job packet being received from the information processing apparatus, the sub CPU consuming less power than the main CPU, wherein: the printer driver of the information processing apparatus further transmits a preceding packet, which does not contain the print job, to the printing apparatus prior to transmitting the print job packet, the preceding packet including a command that instructs the printing apparatus to provide power to the engine; and upon receiving the preceding packet, the sub CPU of the printing apparatus allows the power supply portion to start providing power to the engine by energization start control as instructed by the command.