Patent ID: 8599412

Claim:
A printing system which has a printer device including a communication control portion and a print engine carrying out a print processing, and an information processing device connected to the printer device as external equipment via a USB interface, the printer device being connected to external equipment by the communication function of the communication control portion via a USB interface, and inputting the electric power into the print engine by a print request from the external equipment to perform the print processing in a printer standby state in which the electric power of the print engine is reduced while maintaining the communication function of the communication control portion, wherein, in the printer device, in a state in which a control transmission using a default pipe that is a logical connection of the USB interface and a bulk OUT transmission using a pipe that is a logical connection established after carrying out a configuration of the USB interface can be established between the printer device and the external equipment, the communication control portion responds to and deals with various commands using the control transmission from the external equipment, the communication control portion does not respond and deal with the print request command including the print data using the bulk OUT transmission from the external equipment, the print request command is supplied from the communication control portion to the print engine in the original command state without changing the content thereof, and the print engine responds to and deals with the print request command supplied from the communication control portion, whereby the print processing is carried out according to the print data in the print request command.