Fabrication of electrophotographic imaging members

US5149612A · kind A · utility

Assignee

• Xerox Corporation · US

Inventors

• Edouard E. Langlois · Rochester, US
• Kathryn T. Kehoe · Oklahoma City, US
• Warren R. Smith · Webster, US
• Mark Muscato · Webster, US
• Barbara D. Ceglinski · Oklahoma City, US
• Alan C. Kirchoff · Webster, US
• Robert F. Dunham · Walworth, US
• Michael Stair · Middletown, US

Key dates

• Filing date: Jul 2, 1990
• Grant date: Sep 22, 1992
• Expiry date: Jul 2, 2010

Classification

• Technology area (CPC G): Physics
• CPC primary: G03G5/047
• WIPO field: Optics
• WIPO sector: Instruments

Abstract

Processes and apparatus for fabricating an electrophotographic imaging member in which a web coated with a charge generation layer is coated with a charge transport layer comprising a dopant, the improvement comprising detecting the change in dopant concentration required, determining the amount of highly doped charge transport composition and amount of undoped or lowly doped charge transport composition required to achieve the change in dopant concentration, feeding the determined amounts of highly doped charge transport composition and undoped or lowly doped charge transport composition into a mixing zone, rapidly mixing the amounts of highly doped charge transport composition and undoped or lowly doped charge transport composition to form a uniformly doped charge transport composition, and applying the uniformly doped charge transport composition to the charge generation layer.