Special positive electric selenium drum for laser printer for anti-counterfeiting printing files

The utility model relates to a special positive electric selenium drum for a laser printer for anti-counterfeiting printed files. The toner cartridge comprises a charging assembly, a waste toner bin,a photosensitive drum, a developing roller, a toner feeding roller, a cleaning scraper, a toner outle...

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Bibliographic Details
Main Authors GUO FENGKUI, YE REN, KONG JI'E, ZHANG ZHITIAN
Format Patent
LanguageChinese
English
Published 03.04.2020
Subjects
CINEMATOGRAPHY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HOLOGRAPHY
MAGNETOGRAPHY
PHOTOGRAPHY
PHYSICS
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Summary:The utility model relates to a special positive electric selenium drum for a laser printer for anti-counterfeiting printed files. The toner cartridge comprises a charging assembly, a waste toner bin,a photosensitive drum, a developing roller, a toner feeding roller, a cleaning scraper, a toner outlet knife, a conductive end cover, a gear end cover, a toner bin sealing assembly, a waste toner binsealing assembly, screws and carbon powder, and the charging assembly is divided into three groups of voltages to supply power to the developing roller, the powder feeding roller and the powder discharging knife respectively, so that the surface voltage of the developing roller of the selenium drum, the powder supply voltage and the surface voltage difference of the powder discharging knife are controlled within 50V in a decreasing manner. Wherein the carbon powder must be white anti-counterfeiting carbon powder. The technical effect is that the colorless anti-counterfeiting watermark presentswhite or extremely light c
Bibliography:Application Number: CN201921161208U