公开(公告)号：US20210018857A1

公开(公告)日：2021-01-21

申请号：US16911924

申请日：2020-06-25

Applicant: AVISION INC.

Inventor： SHAO-LAN SHENG ,  SUNG-PO CHENG ,  CHIAMIN KUO ,  HSIANG-YUN CHENG

IPC: G03G15/08

Abstract: A toner level detector includes a toner cartridge, an agitator, a reflective region, a first cleaner, a second cleaner and a transceiver. The toner cartridge stores toner, and has a light-permeable region. The agitator rotatably disposed in the toner cartridge agitates the toner. The reflective region is disposed on the agitator. The first cleaner is disposed on the agitator. The second cleaner is disposed on the toner cartridge. The transceiver disposed on a body outside the toner cartridge outputs an emitting signal to the reflective region through the light-permeable region. The reflective region reflects the emitting signal to generate a reflective signal received by the transceiver through the reflective region. The rotating first cleaner intermittently cleans the fixed light-permeable region, and the fixed second cleaner intermittently cleans the rotating reflective region.

公开(公告)号：US20180359385A1

公开(公告)日：2018-12-13

申请号：US15976112

申请日：2018-05-10

Applicant: AVISION INC.

Inventor： SHAO-LAN SHENG ,  CHI-YAO CHEN

IPC: H04N1/028 ,  H04N1/12 ,  H04N1/00

CPC classification number: H04N1/02825 ,  H04N1/00753 ,  H04N1/00755 ,  H04N1/1225

Abstract: A light sensing apparatus includes a sheet passage, a first sensing assembly and a first background sheet. The sheet passage has a scan window. The first sensing assembly disposed on a first side of the scan window outputs first scan light to the scan window. The first background sheet disposed on a second side of the scan window has a first reflective surface reflecting the first scan light, passing through the scan window, back to the first sensing assembly through the scan window. The first reflective surface of the first background sheet and the scan window are disposed in a non-parallel manner. Therefore, a light sensing method is also provided to achieve the effects of brightness calibration and boundary detection of the first sensing assembly.