Photocopying – Contact printing – Light boxes
Patent
1994-02-15
1995-04-04
Grimley, A. T.
Photocopying
Contact printing
Light boxes
355296, 355298, 355299, G03G 2100
Patent
active
054042054
ABSTRACT:
An image forming machine such as a copier and a printer for forming a toner image on a recording sheet. The machine includes: a photoreceptor for holding a toner image on its surface; a charger for charging the surface of the photoreceptor; a laser writing unit for exposing the surface of the photoreceptor so that a latent image is formed on the surface; a developer for developing the latent image with toner so that the toner image is formed on the surface of the photoreceptor in which the developer includes a developing sleeve for providing toner on the sleeve so that the toner is transferred from the sleeve to the surface of the photoreceptor; a transferor for transferring the toner image from the surface of the photoreceptor to the recording sheet; a cleaning unit for cleaning a residual toner on the surface after the toner image is transferred by the transferor; and an exposing unit for selectively exposing an area of the residual toner on the surface so that an electrical potential difference is created between the residual area of toner and the photoreceptor.
REFERENCES:
patent: 4481275 (1984-11-01), Iseki et al.
patent: 4702591 (1987-10-01), Tsuda et al.
patent: 5107303 (1992-04-01), Miyamoto et al.
patent: 5196892 (1993-03-01), Mitsuaki
Brase Sandra L.
Grimley A. T.
Konica Corporation
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