Patent ID: 7063470
Filing Date: 2006-06-20
Classification: B41J

Abstract:
1. A printer having a supply spool adapted to allow the printer to sense type of media on the spool, the printer comprising: (a) a transceiver for transmitting a first electromagnetic field and for sensing a second electromagnetic field; (b) a transponder and memory carried by the spool and spaced-apart from said transceiver and having data stored therein indicative of the type of the media, said transponder capable of receiving the first electromagnetic field to power said transponder, so that said transponder generates the second electromagnetic field in response to the first electromagnetic field received thereby, the second electromagnetic field being characteristic of the data stored in said memory; (c) a conducting wire coupling said transceiver to a microprocessor included in the printer and adapted to process the data in the second electromagnetic field in order to control operation of the printer; and (d) wherein said transponder is disposed in an end portion of the spool wherein an end cap is positioned over the transponder.