A microcomputerized, miniature postage meter comprises an ink jet printing device adapted to project ink droplets onto a document. A microcomputer, which performs the control and data processing functions of the meter, includes a logic circuit programmed to actuate the ink jet printing device to project...http://www.google.com.au/patents/US4168533?utm_source=gb-gplus-sharePatent US4168533 - Microcomputerized miniature postage meter
