Printer selectively executing one of plurality of different modes including first and second printing modes

Abstract

A printer includes a first power input, a second power input, a printing engine, and a controller. The first power input is configured to receive a first electric power from an external power supply. The second power input is configured to receive a second electric power from a secondary battery. The printing engine is configured to perform printing on a medium. The controller is configured to perform selectively executing one of a plurality of different modes. The plurality of different modes includes a first printing mode and a second printing mode. In the first printing mode, the controller controls the printing engine to perform printing using the first electric power without using the second electric power. In the second printing mode, the controller controls the printing engine to perform printing using both the first electric power and the second electric power.

Dependencies are inferred from the claim text.