Toner hopper lockout mechanism

Details Toner hopper lockout mechanism Toner hopper lockout mechanism

1994-09-14

1997-03-11

Beatty, Robert

Electrophotography

Diagnostics

Consumable

399262, G03G 1508

Patent

active

056106920

ABSTRACT:
A lockout mechanism for preventing an operator from filling a toner hopper in an electrographic printing device until the hopper is at least empty enough to accept the entire contents of a toner cartridge. An interlock mechanism takes advantage of the already existing selector shaft to selectively de-activate lockout members in response to a low toner level transducer. Each hopper is provided with a lockout member which is pivotable between a locked out position and a refill position. The locked out position has the lockout members interfering with a connection between toner cartridges and the top of toner hoppers. The lockout members are held in their locked out positions by cam follower members, which are slidable between an upward locked out position and a downward refill position. The slider member interacts with the cam follower members, via follower pins and notches, to lock the cam follower members in their upwards position or to allow them to move down against the selector cams.

REFERENCES:
patent: 5184181 (1993-02-01), Kurando et al.
patent: 5289243 (1994-02-01), Sakamoto
patent: 5313993 (1994-05-01), Corby et al.
patent: 5392102 (1995-02-01), Toyoizumi et al.
patent: 5430531 (1995-07-01), Kamiya

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