Photocopying – Including fiber optics
Patent
1978-06-08
1979-10-09
Moses, R. L.
Photocopying
Including fiber optics
96 1R, 355 67, G03G 1500
Patent
active
041704134
ABSTRACT:
A device is disclosed which is useful in an electrophotographic copier for stabilizing and increasing contrast potential. The device is employed for extinguishing a recorded, electrostatic charge image. The device has one or more light sources which provide a spectral distribution comprising a first spectral range of maximum photoconductivity production and a radiation energy which is three to ten times a radiation energy present in a second spectral range. The second spectral range is located at a wavelength determined by a maximum of a product of photoconductivity production and penetration depth. An additional radiation energy distribution in remaining portions of the spectral distribution has a radiation energy not exceeding five to ten percent of the radiation energy of the first range.
REFERENCES:
patent: 3481669 (1969-12-01), Roth et al.
patent: 3511649 (1970-05-01), Felty et al.
patent: 3615395 (1971-10-01), Yamaji et al.
patent: 3666364 (1972-05-01), Marushima
patent: 3930853 (1976-01-01), Ciuffini
patent: 3963488 (1976-06-01), Brushenko
Electrophotography, R. M. Schaffert, 1975, pp. 67, 68 and 167.
Moses R. L.
Siemens Aktiengesellschaft
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