Recorders – Electric recording – Electrochemical
Patent
1991-11-15
1994-06-28
Moses, R. L.
Recorders
Electric recording
Electrochemical
346160, 355326P, G01D 1506, G03G 1501
Patent
active
053251202
ABSTRACT:
A copier includes an image member having a dielectric surface and a write head for writing a pattern of electrostatic image dots on the surface. A controller controls the writing head in response to digital data representing an original document so that the image dots of the pattern may have variable field strengths and form a latent electrostatic image of the document on the surface. An inking head presents an electrostatic ink to the surface whereby the surface acquires ink only at the image dots thereon in amounts proportional to the field strengths of the image dots so as to develop the latent image on the surface. The copier also incorporates a support for supporting a printing substrate and paper grippers for mounting a printing substrate to the support. During operation of the copier, the surface and the substrate are pressed together so that the ink is released from the surface to the substrate thereby producing a copy of the original document consisting of a pattern of print dots with variable gray scale values. Subsequently, the printing substrate is removed from the support. Also disclosed are special electrostatic grippers for holding the substrate to the support.
REFERENCES:
patent: 4792860 (1988-12-01), Kuehnle
patent: 4864461 (1989-09-01), Kasahara
patent: 5021829 (1991-06-01), Johnson et al.
patent: 5043761 (1991-08-01), Johnson
patent: 5081501 (1992-01-01), Waki et al.
patent: 5151717 (1992-09-01), Jamzadeh et al.
patent: 5159393 (1992-10-01), Hiroshima et al.
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