Photocopying – Contact printing – Light boxes
Patent
1995-07-20
1996-07-23
Grimley, Arthur T.
Photocopying
Contact printing
Light boxes
250324, 361229, G03G 1502
Patent
active
055395015
ABSTRACT:
Corona generating devices, and printing machines which use such devices, which include a shell, a plurality of corona wires within the shell, and a power source which outputs first and second alternating voltages which are out-of-phase with each other. The plurality of corona wires are interconnected so as to form two groups of wires. The wires in the first group are operatively connected to the first alternating voltage and the wires in the second group are operatively connected to the second alternating voltage. The corona wires are located within the shell such that wires of the first group are adjacent wires of the second group, and such that wires of the second group are adjacent wires of the first group. The corona generating device beneficially includes a metallic screen which acts as a grid and which controls the corona flow from the corona generating device.
REFERENCES:
patent: 4445772 (1984-05-01), Aoki et al.
patent: 4647179 (1987-03-01), Schmidlin
patent: 4695723 (1987-09-01), Minor
patent: 5028779 (1991-07-01), Gundlach et al.
Japanese Patent Application No. Hei 1-340663; dated Dec. 28, 1989; Published Sep. 4, 1991; Assigned to Matsushita Denki; Sangyo K.K.
Beachner James R.
Yu Zhao-Zhi
Grimley Arthur T.
Kelly John M.
Lee Shuk Y.
Xerox Corporation
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