Patent ID: 9207621
Filing Date: 2015-12-08
Classification: G03G

Abstract:
1. A printer comprising: a drive system device configured to perform a printing operation; a drive system controller configured to control the drive system device; a data processing device configured to perform data processing; a data processing system controller configured to control the data processing device; a power supply circuit configured to generate a drive system voltage to be supplied to the drive system controller and a data processing system voltage to be supplied to the data processing system controller, from an input voltage supplied by an external power supply; and an input voltage detector configured to transmit a detection signal indicative of an interruption of the input voltage to the data processing system controller, when the input voltage is interrupted in a first operation mode in which the drive system voltage and the data processing system voltage are supplied to the drive system controller and the data processing system controller, wherein, upon receipt of the detection signal indicating the interruption of the input voltage, the data processing system controller switches at least one of a predetermined portion in the data processing system controller and the drive system controller to a second operation mode in which power consumption is lower than that in the first operation mode, and executes a protective operation for the data processing device, wherein the power supply circuit includes a capacitor configured to store electric power by the input voltage in the first operation mode, and the electric power stored in the capacitor is used for the protective operation for the data processing device in the second operation mode, and wherein the input voltage detector is a voltage detector circuit configured to detect a voltage of an input port of the capacitor and transmit the detection signal indicating the interruption of the input voltage to the data processing system controller when the voltage of the input port of the capacitor becomes lower than a predetermined threshold.