Abstract: A document processing system may include a document scanner for collecting document image data for a given copy project for a given user, a document printer, and a controller. The controller may cooperate with the document scanner to retain document image data for the given copy project if a printing cost therefor is greater than a copy account value for the given user. The controller may thereafter cooperate with the document printer to print the retained document image data for the given copy project based upon an increase in the copy account value to at least equal the printing cost.

Abstract: A document processing system may include a document processing device (e.g., a copier), a host (e.g., a computer server), and a multi-device compatible interface for enabling operation of the host and the document processing device from among a plurality of different possible document processing devices. That is, the multi-device compatible interface may determine a set of signals to use with the document processing device upon being connected therewith, and thereafter use the determined set of signals. Accordingly, the multi-device compatible interface may advantageously be used with numerous types of document processing devices despite the differences in their various protocols, connector types, etc.

Abstract: A computer network may include a host computer and a plurality of computer workstations selectively connectable thereto at which user work sessions may be initiated. Each computer workstation when disconnected from the host computer (e.g., due to server outage, etc.) may advantageously initiate a user session responsive to a user request and store session information for updating the respective user account balance when reconnected with the host computer. Additionally, when the computer workstations are connected to the host computer they may copy respective user account balances from the host computer upon initiation of user sessions, and update the copied account balances based upon computer usage during the respective user sessions. The computer network may also include at least one reservation computer for cooperating with the host computer to schedule user session reservations and provide a requesting user an estimated time before a user session will be made available.