| 发明名称 |
Toner detection sensor and image forming apparatus |
| 摘要 |
A toner-amount detection sensor includes a light-emitting element, a first light-receiving element, and a toner-amount calculating unit. The light-emitting element emits light toward the surface of the transfer body at a predetermined incident angle. The first light-receiving element is disposed on a side opposite to the light-emitting element with respect to a plane normal to the surface of the transfer body. The first light-receiving element receives light reflected from the surface of the transfer body. The toner-amount calculating unit calculates the amount of toner from the quantity of the reflected light received by the first light-receiving element. The sensor has a relationship of A1<A2<1.5A1 where A1 represents the predetermined incident angle with respect to the plane normal to the surface of the transfer body, and A2 represents an angle of disposition of the first light-receiving element with respect to the plane normal to the surface of the transfer body. |
| 申请公布号 |
US9411288(B2) |
申请公布日期 |
2016.08.09 |
| 申请号 |
US201514948424 |
申请日期 |
2015.11.23 |
| 申请人 |
KYOCERA DOCUMENT SOLUTIONS INC. |
发明人 |
Isoda Keisuke |
| 分类号 |
G03G15/08;G03G15/00 |
主分类号 |
G03G15/08 |
| 代理机构 |
|
代理人 |
|
| 主权项 |
1. A toner-amount detection sensor for detecting the amount of toner of a toner visible image formed on a surface of a transfer body, comprising:
a light-emitting element configured to emit light toward the surface of the transfer body at a predetermined incident angle; a first light-receiving element disposed on a side opposite to the light-emitting element with respect to a plane normal to the surface of the transfer body and configured to receive light reflected from the surface of the transfer body; and a toner-amount calculating unit configured to calculate the amount of toner from the quantity of the reflected light received by the first light-receiving element; the sensor having a relationship of A1<A2<1.5A1 where A1 represents the predetermined incident angle with respect to the plane normal to the surface of the transfer body, and A2 represents an angle of disposition of the first light-receiving element with respect to the plane normal to the surface of the transfer body, wherein the angle A1 falls within a range of at least 10° and less than 12°, and the angle A2 falls within a range of at least 12° and less than 18°. |
| 地址 |
Osaka-shi, Osaka JP |
