A printer filter including a companion script file and which filters a standard printer data stream to perform a user-specified print job. In particular, the filter is a computer program which may access other programs or data files, and which reads a standard printer data stream, transforms the input...http://www.google.com.au/patents/US6707568?utm_source=gb-gplus-sharePatent US6707568 - Printer driver filter and method of printing with the same
