|
| US3981267 | 20 mai 1975 | 21 sept. 1976 | Savin Business Machines Corporation | Electrophotographic liquid developing system |
| US3989007 | 21 nov. 1974 | 2 nov. 1976 | U.S. Philips Corporation | Developing chamber for electrostatic latent images |
| US4087171 | 20 oct. 1975 | 2 mai 1978 | Ricoh Co., Ltd. | Electrophotographic exposure and development system |
| US4095887 | 2 août 1976 | 20 juin 1978 | Oce-van der Grinten N.V. | Detector circuit for electrophotographic copier |
| US4128329 | 27 sept. 1976 | 5 déc. 1978 | Ricoh Company, Ltd. | Apparatus for producing bias voltage for use in electrophotographic copying machines |
| US4136945 | 28 oct. 1977 | 30 janv. 1979 | Eastman Kodak Company | Electrophotographic apparatus having compensation for changes in sensitometric properties of photoconductors |
| US4149487 | 30 août 1977 | 17 avr. 1979 | Xerox Corporation | Xerographic machine with infinitely variable developer bias |
| US4173407 | 14 oct. 1977 | 6 nov. 1979 | Coulter Information Systems, Inc. | Electrophotographic contact duplicating apparatus and method |
| US4178095 | 10 avr. 1978 | 11 déc. 1979 | International Business Machines Corporation | Abnormally low reflectance photoconductor sensing system |
| US4179213 | 10 avr. 1978 | 18 déc. 1979 | International Business Machines Corporation | Vector pinning in an electrophotographic machine |
| US4183657 | 10 avr. 1978 | 15 janv. 1980 | International Business Machines Corporation | Dynamic reference for an image quality control system |
| US4236812 | 7 mars 1979 | 2 déc. 1980 | Coulter Systems Corporation | Image recording method for electrophotographic film |
| US4248519 | 27 oct. 1976 | 3 févr. 1981 | Xerox Corporation | Charge control system for xerographic machines |
| US4248524 | 6 juil. 1978 | 3 févr. 1981 | Canon Kabushiki Kaisha | Method of and apparatus for stabilizing electrophotographic images |
| US4286031 | 24 juil. 1980 | 25 août 1981 | Coulter Stork U.S.A., Inc. | Electrostatic multicolor composite printing method and apparatus |
| US4288514 | 7 sept. 1977 | 8 sept. 1981 | Canon Kabushiki Kaisha | Method for controlling image formation in electrophotography by pre-exposure step |
| US4304486 | 22 oct. 1979 | 8 déc. 1981 | Nashua Corporation | Automatic bias and registration control system for electrophotographic copier |
| US4312589 | 19 nov. 1979 | 26 janv. 1982 | International Business Machines Corporation | Charge density control for an electrostatic copier |
| US4318610 | 21 avr. 1980 | 9 mars 1982 | Xerox Corporation | Control system for an electrophotographic printing machine |
| US4352553 | 15 déc. 1980 | 5 oct. 1982 | Tokyo Shibaura Denki Kabushiki Kaisha | Quality control copying apparatus |
| US4365894 | 28 mai 1980 | 28 déc. 1982 | Konishiroku Photo Industry Co., Ltd. | Method for controlling toner concentration |
| US4372674 | 27 oct. 1980 | 8 févr. 1983 | Konishiroku Photo Industry Co., Ltd. | Copying machine having detectors for the background color and density of the original |
| US4413264 | 11 janv. 1982 | 1 nov. 1983 | Pitney Bowes Inc. | Print material supply control apparatus and method |
| US4482243 | 30 août 1982 | 13 nov. 1984 | Canon Kabushiki Kaisha | Image formation apparatus |
| US4529293 | 18 févr. 1983 | 16 juil. 1985 | Oce-Nederland B.V. | Electrophotographic copying process and machine |
| US4564287 | 14 août 1984 | 14 janv. 1986 | Canon Kabushiki Kaisha | Image formation apparatus including means for detecting and controlling image formation condition |
| US4583839 | 24 mars 1983 | 22 avr. 1986 | Canon Kabushiki Kaisha | Image recording apparatus having automatic image density regulation function |
| US4619520 | 23 janv. 1984 | 28 oct. 1986 | Canon Kabushiki Kaisha | Variable magnification electrophotographic copying apparatus |
| US4640603 | 14 sept. 1983 | 3 févr. 1987 | Canon Kabushiki Kaisha | Copying apparatus |
| US4724461 | 6 avr. 1987 | 9 févr. 1988 | Eastman Kodak Company | Dynamic process control for electrostatographic machines |
| US4737819 | 27 févr. 1986 | 12 avr. 1988 | Sharp Kabushiki Kaisha | Light exposure lamp having abnormal condition monitor |
| US4806980 | 6 nov. 1986 | 21 févr. 1989 | Eastman Kodak Company | Dynamic feedforward process control for electrographic machines |
| US4831415 | 25 mars 1988 | 16 mai 1989 | Canon Kabushiki Kaisha | Image forming apparatus controlled in response to detected characteristics of an original |
| US4950905 | 6 févr. 1989 | 21 août 1990 | Xerox Corporation | Colored toner optical developability sensor with improved sensing latitude |
| US5083160 | 13 déc. 1990 | 21 janv. 1992 | Ricoh Company, Ltd. | Image density control method and color image forming apparatus |
| US5119132 | 24 oct. 1990 | 2 juin 1992 | Xerox Corporation | Densitometer and circuitry with improved measuring capabilities of marking particle density on a photoreceptor |
| US5164776 | 19 sept. 1991 | 17 nov. 1992 | Xerox Corporation | Apparatus and method for correcting the voltage on a photoconductive device |
| US5258810 | 13 déc. 1991 | 2 nov. 1993 | Minnesota Mining and Manufacturing Company | Method for calibrating an electrophotographic proofing system |
| US5260745 | 30 déc. 1992 | 9 nov. 1993 | Canon Kabushiki Kaisha | Image exposing and forming apparatus with original density detection |
| US5262825 | 13 déc. 1991 | 16 nov. 1993 | Minnesota Mining and Manufacturing Company | Density process control for an electrophotographic proofing system |
| US6553196 | 7 sept. 2001 | 22 avr. 2003 | Canon Kabushiki Kaisha | Image forming apparatus |
| US7042557 | 18 déc. 2002 | 9 mai 2006 | Horiba, Ltd. | Sample supplying device for a dry particle-size distribution measuring apparatus and method |
| US8145078 | 23 févr. 2009 | 27 mars 2012 | Xerox Corporation | Toner concentration system control with state estimators and state feedback methods |
| US8213820 | 7 juil. 2009 | 3 juil. 2012 | Canon Kabushiki Kaisha | Measuring apparatus, measuring method and image forming apparatus |
| USRE30477 | 10 mai 1979 | 13 janv. 1981 | Savin Corporation | Electrophotographic liquid developing system |
| USRE31964 | 27 juin 1983 | 6 août 1985 | Savin Corporation | Automatic development electrode bias control system |