Patent ID: 9261816
Filing Date: 2016-02-16
CPC Classification: G03G

Claim Text:
1. A developer amount detector to detect an amount of developer inside a developer container, the developer amount detector comprising: a light-emitting element; a light-receiving element; a first light guide including a first end disposed to face the light-emitting element, a second end disposed inside the developer container, and a translucent cover to cover the second end of the first light guide, the cover including a light-emitting face; a second light guide including a first end disposed to face the light-receiving element, a second end disposed inside the developer container, and a translucent cover to cover the second end of the second light guide, the cover including a light-receiving face to face the light-emitting face across a gap; and a cleaner including a sliding portion to slidingly contact the light-emitting face and the light-receiving face to remove developer adhering to the light-emitting face and the light-receiving face.