Patent ID: 7145683
Filing Date: 2006-12-05
Classification: G06F,G06K,H04L

Abstract:
1. A host computer which communicates with a printer, comprising: a generation unit, adapted to generate a print job; a job output unit, adapted to output the print job generated by said generation unit to a job channel of the printer; a request unit, adapted to send a request for job list information via a management channel of the printer; an obtaining unit, adapted to obtain the job list information provided via the management channel by the printer in response to the request sent by said request unit, wherein the job list information includes, for each one of a plurality of print jobs, a job ID generated in response to reception of the print job via the job channel in the printer, and wherein said obtaining unit further obtains attribute information for each print job based on the ID for the print job included in the job list information; and a cancel unit, adapted to send a cancel instruction including the job ID for a desired one of the plurality of print jobs to the management channel of the printer.