Recorders – Printing – dotting – or punching marker – Ink transfer support or moving means
Patent
1987-12-31
1988-10-25
Evans, Arthur G.
Recorders
Printing, dotting, or punching marker
Ink transfer support or moving means
3461531, G01D 1500
Patent
active
047807334
ABSTRACT:
Direct electrostatic printing apparatus including structure for delivering developer or toner particles to a printhead forming an integral part of the printing device. The printing device includes, in addition to an apertured printhead, a conductive shoe which is suitably biased during a printing cycle to assist in the electrostatic attraction of developer through apertures in the printhead onto the copying medium disposed intermediate the printhead and the conductive shoe. Developer or toner is delivered to the printhead via a pair of opposed charged toner or developer conveyors. One of the conveyors is attached to the printhead and has an opening therethrough for permitting passage of the developer or toner from between the conveyors to areas adjacent the apertures in the printhead.
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patent: 3801869 (1974-04-01), Masuda
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patent: 4448867 (1984-05-01), Ohkubo et al.
patent: 4491855 (1985-01-01), Fujii et al.
patent: 4568955 (1986-02-01), Hosoya et al.
patent: 4647179 (1987-03-01), Schmidlin
Evans Arthur G.
Xerox Corporation
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