Electrophotography – Internal machine environment – Particle or contaminant control
Patent
1996-04-01
1999-03-09
Royer, William
Electrophotography
Internal machine environment
Particle or contaminant control
399 99, 399103, 399267, G03G 2100
Patent
active
058813381
ABSTRACT:
A development station for an electrostatographic reproduction apparatus wherein pigmented marking particles from a particulate material mixture of pigmented marking particles and magnetic carrier particles are utilized to develop latent image charge patterns on a dielectric member. The development station has a housing adapted to be located adjacent to a dielectric member. The housing defines a reservoir for a particulate material mixture, and an opening facing such dielectric member. A mixer for mixing particulate material, a magnetic brush for applying pigmented marking particles from such particulate material mixture to a latent image charge pattern to develop such charge pattern, and a transport for transporting such particulate material from the mixer to the magnetic brush are located within the housing. A device is provided for collecting contaminating airborne particulate material contamination. The contamination collecting device includes an elongated tube, located externally of the housing. The tube defines an opening communicating through the wall of the tube with the interior thereof. Passages are defined by the housing between the magnetic brush and the mixer, communicating with the opening of the tube, and a vacuum is supplied to the interior of the tube to substantially prevent contamination of the reproduction apparatus and its environment.
REFERENCES:
patent: 4377334 (1983-03-01), Nishikawa
patent: 4583112 (1986-04-01), Morano et al.
patent: 4634286 (1987-01-01), Pike
patent: 4666282 (1987-05-01), Rowe
patent: 4963930 (1990-10-01), Yoshimaru et al.
Armstrong Timothy Gilbert
Farnand Susan Pike
Maher James C
Eastman Kodak Company
Kessler Lawrence P.
Royer William
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