Detection device, image forming apparatus, non-transitory computer readable medium, and detection method

A non-transitory computer readable medium storing a program causing a computer to execute a process comprising:

• in response to a measurement target being detected in a first detection range that is part of a detection range in which the distance to the measurement target is detectable by a sound wave sensor that detects a distance to a measurement target, changing setting to cause a detection sensitivity for a second detection range in the detection range of the sound wave sensor to be a second detection sensitivity lower than a first detection sensitivity set before the setting is changed, the second detection range being outward of the first detection range when viewed from the sound wave sensor.

A detection method comprising:

• in response to a measurement target being detected in a first detection range that is part of a detection range in which the distance to the measurement target is detectable by a sound wave sensor that detects a distance to a measurement target, changing setting to cause a detection sensitivity for a second detection range in the detection range of the sound wave sensor to be a second detection sensitivity lower than a first detection sensitivity set before the setting is changed, the second detection range being outward of the first detection range when viewed from the sound wave sensor.