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Brevets

Référencé par

Brevet citant Date de dépôt Date de délivrance Cessionnaire d'origine Titre
US398126720 mai 197521 sept. 1976Savin Business Machines CorporationElectrophotographic liquid developing system
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US417921310 avr. 197818 déc. 1979International Business Machines CorporationVector pinning in an electrophotographic machine
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US424851927 oct. 19763 févr. 1981Xerox CorporationCharge control system for xerographic machines
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US428603124 juil. 198025 août 1981Coulter Stork U.S.A., Inc.Electrostatic multicolor composite printing method and apparatus
US42885147 sept. 19778 sept. 1981Canon Kabushiki KaishaMethod for controlling image formation in electrophotography by pre-exposure step
US430448622 oct. 19798 déc. 1981Nashua CorporationAutomatic bias and registration control system for electrophotographic copier
US431258919 nov. 197926 janv. 1982International Business Machines CorporationCharge density control for an electrostatic copier
US431861021 avr. 19809 mars 1982Xerox CorporationControl system for an electrophotographic printing machine
US435255315 déc. 19805 oct. 1982Tokyo Shibaura Denki Kabushiki KaishaQuality control copying apparatus
US436589428 mai 198028 déc. 1982Konishiroku Photo Industry Co., Ltd.Method for controlling toner concentration
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US448224330 août 198213 nov. 1984Canon Kabushiki KaishaImage formation apparatus
US452929318 févr. 198316 juil. 1985Oce-Nederland B.V.Electrophotographic copying process and machine
US456428714 août 198414 janv. 1986Canon Kabushiki KaishaImage formation apparatus including means for detecting and controlling image formation condition
US458383924 mars 198322 avr. 1986Canon Kabushiki KaishaImage recording apparatus having automatic image density regulation function
US461952023 janv. 198428 oct. 1986Canon Kabushiki KaishaVariable magnification electrophotographic copying apparatus
US464060314 sept. 19833 févr. 1987Canon Kabushiki KaishaCopying apparatus
US47244616 avr. 19879 févr. 1988Eastman Kodak CompanyDynamic process control for electrostatographic machines
US473781927 févr. 198612 avr. 1988Sharp Kabushiki KaishaLight exposure lamp having abnormal condition monitor
US48069806 nov. 198621 févr. 1989Eastman Kodak CompanyDynamic feedforward process control for electrographic machines
US483141525 mars 198816 mai 1989Canon Kabushiki KaishaImage forming apparatus controlled in response to detected characteristics of an original
US49509056 févr. 198921 août 1990Xerox CorporationColored toner optical developability sensor with improved sensing latitude
US508316013 déc. 199021 janv. 1992Ricoh Company, Ltd.Image density control method and color image forming apparatus
US511913224 oct. 19902 juin 1992Xerox CorporationDensitometer and circuitry with improved measuring capabilities of marking particle density on a photoreceptor
US516477619 sept. 199117 nov. 1992Xerox CorporationApparatus and method for correcting the voltage on a photoconductive device
US525881013 déc. 19912 nov. 1993Minnesota Mining and Manufacturing CompanyMethod for calibrating an electrophotographic proofing system
US526074530 déc. 19929 nov. 1993Canon Kabushiki KaishaImage exposing and forming apparatus with original density detection
US526282513 déc. 199116 nov. 1993Minnesota Mining and Manufacturing CompanyDensity process control for an electrophotographic proofing system
US65531967 sept. 200122 avr. 2003Canon Kabushiki KaishaImage forming apparatus
US704255718 déc. 20029 mai 2006Horiba, Ltd.Sample supplying device for a dry particle-size distribution measuring apparatus and method
US814507823 févr. 200927 mars 2012Xerox CorporationToner concentration system control with state estimators and state feedback methods
US82138207 juil. 20093 juil. 2012Canon Kabushiki KaishaMeasuring apparatus, measuring method and image forming apparatus
USRE3047710 mai 197913 janv. 1981Savin CorporationElectrophotographic liquid developing system
USRE3196427 juin 19836 août 1985Savin CorporationAutomatic development electrode bias control system