摘要 |
<P>PROBLEM TO BE SOLVED: To securely delete data upon the occurrence of defective conditions even when some data sent before a data transmission stop are in a host device and some data are on the way to communication. <P>SOLUTION: A printer 20 has a normal processing mode for printing based on printing data transmitted from the host device 10 and a deletion processing mode that reads and throws away printing data transmitted from the host device. The printer comprises an abnormality detecting means 47a for detecting abnormalities of the printer, a deletion processing mode transition means 44 for moving to the deletion processing mode when abnormalities are detected in the normal processing mode, and a normal processing mode transition means 45 for finishing the deletion processing mode and moving to the normal processing mode on receiving a printing resuming command from the host device. <P>COPYRIGHT: (C)2005,JPO&NCIPI |