Image forming apparatus, method for controlling image forming apparatus, and storage medium to shift power states

  • US 10,003,706 B2
  • Filed: 06/15/2015
  • Issued: 06/19/2018
  • Est. Priority Date: 06/19/2014
  • Status: Active Grant
First Claim
Patent Images

1. An image forming apparatus configured to operate in a plurality of power modes, the image forming apparatus comprising:

  • a Universal Serial Bus (USB) detector having a power state and configured to receive predetermined data to shift a power mode of the image forming apparatus to a normal power mode from a power saving mode;

    a network detector having a power state and configured to receive predetermined data to shift the power mode of the image forming apparatus to the normal power mode from the power saving mode;

    a display configured to receive user input to set both the power state for the USB detector and the power state for the network detector in the power saving mode; and

    a power supply controller configured to, when a condition for shifting the power mode of the image forming apparatus from the normal power mode to the power saving mode is satisfied, (1) stop power to the USB detector and the network detector, (2) stop power to the USB detector and continue supplying power to the network detector, (3) stop power to the network detector and continue supplying power to the USB detector, or (4) continue supplying power to the USB detector and the network detector, based on the user input received by the display,wherein the USB detector is configured to receive the predetermined data from a USB host device through a USB interface that is external to the image forming apparatus and the network detector is configured to receive the predetermined data through a USB interface, andwherein, in response to disconnection of the USB host device from the image forming apparatus, the power mode of the image forming apparatus is shifted from the normal power mode to a power saving mode in which the network detector continues to receive power.

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