Printing apparatus, method of controlling the same, and storage medium
AssigneeCanon Kabushiki Kaisha
InventorRyohei Takahashi
Life of this patent
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Abstract
A printing apparatus comprises a photodetector including a plurality of light-receiving devices, apertures through which specular reflection light and diffused reflection light, which are light from a light-emitting unit reflected by a target, pass into the photodetector, a selector configured to select at least one light-receiving device among the plurality of light-receiving devices, and an amplifier configured to amplify a signal from a light-receiving device of the photodetector. The printing apparatus performs control so as to select light-receiving devices by the selector and switch connection between the light-receiving devices selected by the selector and the amplifier, in accordance with a detection mode for detecting the target.
Claims11
A printing apparatus comprising:
- a photodetector including a plurality of light-receiving devices;
- apertures through which specular reflection light and diffused reflection light, which are light from a light-emitting unit reflected by a target, pass into the photodetector;
- a selector configured to select at least one light-receiving device among the plurality of light-receiving devices;
- an amplifier configured to amplify a signal from a light-receiving device of the photodetector;
- and
- one or more controllers including one or more processors and one or more memories, wherein the one or more controllers are configured to:
- in accordance with a detection mode for detecting the target, perform control so as to select light-receiving devices by the selector and switch connection between the light-receiving devices selected by the selector and the amplifier.
A method of controlling a printing apparatus including a photodetector including a plurality of light-receiving devices, apertures through which specular reflection light and diffused reflection light, which are light from a light-emitting unit reflected by a target, pass into the photodetector, and an amplifier configured to amplify a signal from a light-receiving device of the photodetector, the method comprising:
- selecting at least one light-receiving device among the plurality of light-receiving devices;
- in accordance with a detection mode for detecting the target, perform control so as to select light-receiving devices by the selector and switch connection between the light-receiving devices selected by the selector and the amplifier;
- and
- executing processing for detecting the target corresponding to the detection mode, based on a signal obtained by the amplifier amplifying signals from the selected light-receiving devices.
A non-transitory computer-readable storage medium storing a program for causing a processor to execute a method of controlling a printing apparatus including a photodetector including a plurality of light-receiving devices, apertures through which specular reflection light and diffused reflection light, which are light from a light-emitting unit reflected by a target, pass into the photodetector, and an amplifier configured to amplify a signal from a light-receiving device of the photodetector, the method comprising:
- selecting at least one light-receiving device among the plurality of light-receiving devices;
- in accordance with a detection mode for detecting the target, perform control so as to select light-receiving devices by the selector and switch connection between the light-receiving devices selected by the selector and the amplifier;
- and
- executing processing for detecting the target corresponding to the detection mode, based on a signal obtained by the amplifier amplifying signals from the selected light-receiving devices.
Dependencies are inferred from the claim text.