Photocopying – Contact printing – Light boxes
Patent
1989-06-26
1990-04-17
Braun, Fred L.
Photocopying
Contact printing
Light boxes
355305, G03G 2100
Patent
active
049184881
ABSTRACT:
Scavenging apparatus for removing substantially all unwanted particles from the image and non-image areas of an electrostatographic imaging member without appreciable adverse effects on the desired image remaining thereon, includes an alternating pole magnetic roller for rotatably creating a fast changing magnetic field, a stationary ac biased shell for enclosing the magnetic roller and for creating a low, but fast changing electrostatic field, and a low vacuum system. This apparatus combines the effects of such magnetic and electrostatic fields with those of the low vacuum system to gently loosen and effectively remove unwanted particles from the imaging member, without resort to relatively strong electrostatic field and vacuum values that are likely to adversely affect the desired loose toner image still on the imaging member.
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Research Disclosure, 24942 (Jan. 1985).
Armstrong Timothy G.
Bothner Carl R.
Creveling Clyde M.
Weitzel Richard A.
Braun Fred L.
Eastman Kodak Company
Hoffman Sandra L.
Nguti Tallam I.
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