Network printer apparatus

摘要

A high-speed network printer apparatus can be used in common by clients having different communication protocols and can sort out printing jobs into the order of clients. Printing information is supplied from a client 52 which may be a personal computer or a work station through a connector of the printer apparatus. A LAN interface driver 216 receives the printing information and identifies a communication protocol by which the printing information is transferred. A communication protocol controller 21-3 to 2-6 receives printing information in accordance with a predetermined protocol. A spooling controller 21-8, which is coupled to a storage unit 24 which stores the received printing information, creates a queue for printing jobs. A printer controller reads out from the storage unit the printing information corresponding to a printing job of the highest priority which is designated by the queue, and forms a dot image on the basis of the printing information. A printing mechanism 23 prints the image on paper. A mailbox (51, Fig. 40) stores printed paper into a designated bin. A printing job table JBTB is provided in the printer apparatus, in which each row is allotted to one printing job which includes a field for storing an emulation program name. A registering unit 122 judges whether or not there is a another printing job having the same emulation program name to expedite the printing process.