Seiko Epson Corporation

Tsutomu Kasai

Susumu Shiohara

Toshiki Takei

Makoto Noguchi

Kenji Nariai

A printer switches between and uses plural communication units according to the operating mode, can switch the operating mode appropriately to the operating conditions, and can improve power conservation. The printer has a network control unit with a first communication unit configured to communicate in a first operating mode; and a main control unit having a second communication unit configured to communicate in a second operating mode. The main control unit limits the power supply to the first communication unit in the second operating mode; and the second communication unit determines whether or not to go to the first operating mode based on content of data received in the second operating mode.

Control method, printer, and storage medium

Efficient power conservation is enabled using a configuration having multiple processors. A printing device has a first processor unit that runs a program stored in a first memory, and a second processor unit that runs a program stored in a second memory, and has operating modes including a normal mode in which the first processor unit and the second processor unit operate according to a normal clock, and a first power conservation mode in which, after going to a state enabling the first processor unit to execute some processes of the second processor unit, the first processor unit operates according to the normal clock, and the second processor operates according to a slow clock having an operating frequency lower than the normal clock.

Growing community of inventors

Shimosuwa-machi, Japan

Tsutomu Kasai