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1. WO1997030380 - METHOD AND APPARATUS TO REDUCE FOGGING IN ELECTROSTATIC PRINTING

Publication Number WO/1997/030380
Publication Date 21.08.1997
International Application No. PCT/US1996/007363
International Filing Date 22.05.1996
Chapter 2 Demand Filed 20.05.1997
IPC
G03G 15/01 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
01for producing multicoloured copies
G03G 15/32 2006.01
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
22involving the combination of more than one step according to groups G03G13/02-G03G13/20120
32in which the charge pattern is formed dotwise
CPC
G03G 15/0121
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
01for producing multicoloured copies
0105Details of unit
0121for developing
G03G 15/321
GPHYSICS
03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
15Apparatus for electrographic processes using a charge pattern
22involving the combination of more than one step according to groups G03G13/02 - G03G13/20
32in which the charge pattern is formed dotwise, ; e.g. by a thermal head
321by charge transfer onto the recording material in accordance with the image
Applicants
  • MINNESOTA MINING AND MANUFACTURING COMPANY [US]/[US]
Inventors
  • SPECKHARD, Thomas, A.
  • PEDERSON, Jeffrey, C.
  • AMELL, Gregory, G.
Agents
  • HORNICKEL, John, H.
Priority Data
08/605,25715.02.1996US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) METHOD AND APPARATUS TO REDUCE FOGGING IN ELECTROSTATIC PRINTING
(FR) PROCEDE ET DISPOSITIF DE REDUCTION DES BAVURES DE CONTOUR EN IMPRESSION ELECTROSTATIQUE
Abstract
(EN)
A method and apparatus to reduce fogging on electrostatic printing media is disclosed. A negative bias is applied to toning station(s) (7) or vacuum station(s) of the printing apparatus with isolation of that negative bias from the printing media (2).
(FR)
La présente invention concerne un procédé et un dispositif de réduction des bavures de contour en impression électrostatique. Le procédé consiste à polariser négativement le(s) poste(s) de distribution (7) ou le(s) poste(s) de dépression de l'appareil à imprimer tout en isolant de cette polarisation négative le support d'impression (2).
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