Image forming apparatus

Abstract

An image forming apparatus which is capable of decreasing the failure rate by improving a photocatalytic material and utilization efficiency thereof, and by decomposing substances that cannot be completely removed with a cleaning member or by not causing the substances to adhere. A light emitting unit irradiates an object to be irradiated with light. A light receiving unit receives reflected light from the irradiated object. A protection sheet containing a photocatalytic material is disposed so as to cover the light emitting unit and light receiving unit. The light emitting unit emits light of a wavelength range adapted to a bandgap width of the protection sheet, and the light receiving unit has sensitivity in a wavelength range of light emitted from the light emitting unit.

Dependencies are inferred from the claim text.