Electrophotography – Internal machine environment – Particle or contaminant control
Patent
1996-12-20
1998-05-26
Grimley, Arthur T.
Electrophotography
Internal machine environment
Particle or contaminant control
220254, 220371, 22218909, 399 93, 399 98, G03G 1508, G03G 2100
Patent
active
057582319
ABSTRACT:
Hopper plug (143) vents out air pressure build-up which cause toner leaks. One side of the plug has a series of entrance openings (491) which communicate with the inside of the hopper (61). Air, potentially containing some toner particles, passes through those openings and enters a first chamber (507). The first chamber has exit holes (499) which do not face the entrance openings. Air passing through the exit holes of the first chamber enters a second chamber (509). The second chamber has exit holes (495) which are at the opposite end and do not face the entrance openings. Third chamber (511) of this labyrinth faces a mat toner filter (501) which leads to exit holes (503).
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Coffey Johnnie A.
Curry Steven Alan
Strean Robert Flynt
Ward II Earl Dawson
Brady John A.
Chen Sophia S.
Grimley Arthur T.
Lexmark International Inc.
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