| 摘要 |
Methods and systems are presented for managing prepaid usage of document processing devices, in which an account manager system (104) automatically purchases prepaid account credits for customer accounts and applies print units to document processing devices registered to customer accounts periodically and according to preset top off thresholds (123, 128) subject to predefined limits (124, 129), and in which customer computer agents (360) allow just in time printing using devices with job-based application of print units to selected devices. |
