| 摘要 |
According to a technique described herein, whenever there are print jobs waiting in a currently idle printing device's queue, the printing device selects, from among those print jobs, the longest-waiting print job that does not require any resources that the printing device cannot currently supply without human intervention. The printing device removes that print job from the queue and prints that print job, even if other print jobs have been waiting longer in the queue. If the queue contains print jobs that the printing device cannot currently print because the printing device currently lacks sufficient resources to print those print jobs completely, then, for each such print job, the printing device displays reasons why that print job cannot currently be printed. The reasons may include information that identifies the qualities and/or quantities of the resources that the printing device currently lacks but needs.
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