Xerox Corporation

Mark Simon Boyt

Brent Rodney Jones

Ashok Murthy

Charles Robert Carlson

Shanti Villarreal

Sara Kleiman

James Patrick VanWinkle

Paul Ronald Herman

Document processing devices and methods are presented, in which the device stores a remaining print unit value in its memory that represents the amount of print units currently available to enable the device to perform the document processing operations, and a programmable computer of the device selectively performs document processing jobs for users and decrements the remaining print unit value until the value reaches zero and the device provides for expenditure of print units according to color content and/or coverage levels determined for a given job.

Pre-paid document processing devices and operating methods

Methods and systems are presented for managing document processing device usage in which a customer accesses a management system to buy and pay for account credits, and to apply print units to specific managed device by conversion of account credits based on current pricing information for the specified account and the particular device at the time of the request.

Methods and apparatus for managing pre-paid printing system accounts

Growing community of inventors

Virginia Water, United Kingdom

Mark Simon Boyt