Mailing machine comprising a printer module including an array of ink jet print elements for printing on an envelope having a top surface, a registration shield located below and spaced apart from the printer module and a transport apparatus. The registration shield includes a top surface and a bottom...http://www.google.com.au/patents/US5923343?utm_source=gb-gplus-sharePatent US5923343 - Mailing machine having a registration shield with improved air flow capability during ink jet printing on envelopes
