|
| US4322155 | 20 Dic 1979 | 30 Mar 1982 | Ragen Precision Industries, Inc. | Electrostatic display apparatus |
| US4335955 | 30 Ene 1979 | 22 Jun 1982 | Ragen Precision Industries, Inc. | Electrostatic display apparatus |
| US4654286 | 22 Oct 1985 | 31 Mar 1987 | Sharp Kabushiki Kaisha | Method of removing a charge from an electrophotographic photoreceptor |
| US4664500 | 29 Mar 1985 | 12 May 1987 | Meteor-Siegen Apparatebau Paul Schmeck GmbH | Method and apparatus for transferring a latent electrical image |
| US4688927 | 26 Dic 1985 | 25 Ago 1987 | Minolta Camera Kabushiki Kaisha | Electrophotographic copying machine |
| US4785324 | 13 Mar 1987 | 15 Nov 1988 | Kabushiki Kaisha Toshiba | Electrophotographic apparatus and method for preventing the lowering of a charging voltage at a photoreceptor |
