Toner cartridge with hopper exit agitator

Details Toner cartridge with hopper exit agitator Toner cartridge with hopper exit agitator

1996-12-20

1999-02-23

Royer, William J.

Electrophotography

Image formation

Development

399119, 399260, G03G 1508

Patent

active

058753788

ABSTRACT:
A toner cartridge (1) has a cylindrical toner hopper (61) with a rear wall (61a) defining an output opening well above the lower part of the hopper. A paddle (63) is rotated in the hopper. The exit surface (61aaa) declines downward to form a chamber for the toner adder roller (45) and developer roller (43). This configuration discourages toner from returning to the hopper after it has been electrically charged.
To improve movement of toner past the opening an agitator bar (65) extends across the cartridge near the exit surface. The bar is pivoted at both ends and has a portion (65a) which extends into the path of the paddle. As the paddle rotates, it moves the agitator upward until the curved paths of the two members reach separation, at which time the bar drops by gravity. The bar jars toner loose and eliminates jams of toner. The flat surface of the bar, when it has been moved up, partially blocks the exit opening, which desirably limits toner flow.

REFERENCES:
patent: 4592642 (1986-06-01), Imaizumi et al.
patent: 4896184 (1990-01-01), Kamitamari et al.
patent: 4947211 (1990-08-01), Ono et al.
patent: 4987452 (1991-01-01), Nakagawa et al.
patent: 4987454 (1991-01-01), Natsuhara et al.
patent: 4993829 (1991-02-01), Naganuma et al.
patent: 4998140 (1991-03-01), Satou et al.
patent: 5012285 (1991-04-01), Oka et al.
patent: 5012289 (1991-04-01), Aldrich et al.
patent: 5016560 (1991-05-01), Asada et al.
patent: 5036358 (1991-07-01), Yoshida
patent: 5075728 (1991-12-01), Kobayashi et al.
patent: 5101237 (1992-03-01), Molloy
patent: 5136333 (1992-08-01), Craft et al.
patent: 5243390 (1993-09-01), Takemoto et al.
patent: 5245391 (1993-09-01), Suzuki et al.
patent: 5266436 (1993-11-01), Aoto et al.
patent: 5289237 (1994-02-01), Hashizume et al.
patent: 5331378 (1994-07-01), Baker et al.
patent: 5337032 (1994-08-01), Baker et al.
patent: 5365315 (1994-11-01), Baker et al.
patent: 5369478 (1994-11-01), Kobayashi et al.
patent: 5379097 (1995-01-01), Aoto et al.
patent: 5387964 (1995-02-01), Kanno et al.
patent: 5502552 (1996-03-01), Iwata et al.
patent: 5506665 (1996-04-01), Ishida et al.
patent: 5526097 (1996-06-01), Ream
patent: 5581334 (1996-12-01), Forlani et al.
IBM Technical Disclosure Bulletin, Aug. 1990, vol. 33, No. 3B, pp. 29-30, Toner Seal for Printer.

Affiliated with

Also associated with

Rating

Toner cartridge with hopper exit agitator does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Toner cartridge with hopper exit agitator, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Toner cartridge with hopper exit agitator will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-315310