| 摘要 |
To process a plurality of types of information having different priority according to the priority, multiple logical channels are generated by combining a protocol in a transport layer of a network and a print queue in an application layer and priority is allocated to each logical channel. A host computer sends generated information to a predetermined logical channel by referring to a priority table. A printer discriminates the priority of received information by referring to a priority table and executes the processing of the information according to the priority. As a result, interrupt print data can be processed prior to normal print data or a control command can be processed prior to than print data.
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