through a light transmissive window in the developer container wall

Full Title

Apparatus for electrophotographic processes > Details of powder developing device not concerning the development directly > Arrangements for detecting toner level or concentration in the developing device > Optical detection > through a light transmissive window in the developer container wall

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Child Classifications

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G03G 2215/0897 Cleaning of the light transmissive window

Top Applicants

Top 10 applicants by patent filingsfor class G03, 2013–2023, worldwide · Source: EPO PATSTAT

CANON JP 19,215
CANON 12,916
ASML NETHERLANDS NL 10,000
FUJIFILM JP 7,814
SAMSUNG ELECTRONICS COMPANY KR 5,181
CARL ZEISS SMT DE 5,079
RICOH COMPANY JP 4,343
LG INNOTEK COMPANY KR 4,054
KYOCERA DOCUMENT SOLUTIONS 3,812
KYOCERA DOCUMENT SOLUTIONS JP 3,682