Patent ID: 6910817
Filing Date: 2005-06-28
Classification: G06K

Abstract:
1. A method of controlling a printing apparatus adapted to receive data composed of print data and control commands from a host device and to store the received data in a receive buffer, said printing apparatus being switchable between a normal processing mode and an error handling mode, wherein in the normal processing mode said printing apparatus processes all data in the receive buffer, said method comprising: defining a deletion processing mode wherein said printing apparatus searches for execution one or more specific commands among said control commands within said receive buffer while deleting all other data from said receive buffer, said printing apparatus being effective for selectively activating said deletion processing mode; having said printing apparatus switch to said error handling mode in response to it detecting an error while in said normal processing mode; when switching from said normal processing mode to said error handling mode, having said printing apparatus select for activation one of a first, second or third error state mode; wherein in said third error state mode, said printing apparatus clears all data in the print buffer and does not erase any data in the receive buffer, and then activates the deletion processing mode.