Image forming apparatus with malfunction detection

摘要

An object is to accurately determine a factor that drops the quantity of laser light. An image forming apparatus is provided, which has: a laser diode that includes a front side emission point to which drive current is supplied and from which rear light is emitted; a photosensitive drum to which the rear light is emitted; a detection portion that detects a value on a surface potential of the photosensitive drum; and a determination portion that determines an abnormality of the laser diode, and the detection portion detects, a plurality of times, a value on the surface potential of a portion of the photosensitive drum to which the rear light is emitted, and the determination portion determines whether the laser diode is abnormal based on a change amount of the value on the surface potential detected by the detection portion.

主权项

1. An image forming apparatus, comprising:
a light emitting member that includes a first emission portion to which drive current is supplied and from which first laser light is emitted; a photoreceptor to which the first laser light is emitted; a detection portion that detects a value related to a surface potential of the photoreceptor; a determination portion that determines an abnormality of the light emitting member; a voltage applying portion that applies voltage to the photoreceptor; and a notification portion that notifies a user that the voltage applying portion is in an abnormal state when a value, detected by the detection portion, related to the surface potential of the photoreceptor to which the first laser light is emitted is a value outside a first predetermined range and when a value, detected by the detection portion, related to the surface potential of the photoreceptor to which the voltage is applied by the voltage applying portion is a value outside a second predetermined range, notifies the user that an optical component other than the light emitting member is in an abnormal state when a value, detected by the detection portion, related to the surface potential of the photoreceptor to which the first laser light is emitted is a value outside a first predetermined range and when a value, detected by the detection portion, related to the surface potential of the photoreceptor to which the voltage is applied by the voltage applying portion is a value within a second predetermined range and the determination portion does not determine that the light emitting member is in an abnormal state, and notifies the user that the light emitting member is in the abnormal state when a value, detected by the detection portion, related to the surface potential of the photoreceptor to which the first laser light is emitted is a value outside a first predetermined range and when a value, detected by the detection portion, related to the surface potential of the photoreceptor to which voltage is applied by the voltage applying portion is a value within a second predetermined range and when the determination portion determines that the light emitting element is in the abnormal state, wherein the detection portion detects, a plurality of times, a value related to the surface potential of a portion of the photoreceptor to which the first laser light is emitted, and the determination portion determines whether the light emitting member is in the abnormal state, based on a change amount of the value related to the surface potential detected by the detection portion.