<p>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)./!</p>
申请公布号
EP0849641(B1)
申请公布日期
2003.04.16
申请号
EP19970310421
申请日期
1997.12.22
申请人
LEXMARK INTERNATIONAL, INC.
发明人
COFFEY, JOHNNIE A.;CURRY, STEVEN ALAN;STREAN, ROBERT FLYNT;WARD, EARL DAWSON, II