Photocopying – Contact printing – Light boxes
Patent
1985-03-06
1986-01-14
Joyce, Harold
Photocopying
Contact printing
Light boxes
55419, 55472, 981154, 355 3R, F23J 1100
Patent
active
045639434
ABSTRACT:
A filter system for removing air borne contaminants such as carbon black discharged from high speed printers such as page printers, laser printers, and the like.
REFERENCES:
patent: 2710574 (1955-06-01), Runion
patent: 3381453 (1968-05-01), Dills
patent: 3999911 (1976-12-01), Matsubara
patent: 4038913 (1977-08-01), Earley
patent: 4163650 (1979-08-01), Watson et al.
patent: 4178092 (1979-12-01), Yamamoto et al.
Chandler Charles W.
Joyce Harold
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