Printer media supply spool adapted to allow the printer to sense type of media, and method of assembling same

A printer including a plurality of supply spools and adapted to allow the printer to sense type of a media on a particular one of the spools, comprising:

• (a) a shaft having a supply of the media wound thereabout;
• (b) a transceiver unit that is positioned in proximity to said shaft for transmitting a first electromagnetic field and for sensing a second electromagnetic field;
• (c) a transponder integrally connected to said shaft 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 transponder, whereby said transceiver senses the second electromagnetic field as said transponder generates the second electromagnetic field, wherein said transponder is disposed in an end portion of said shaft said transponder being covered at least in part by an end cap;
• (d) 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
• (e) a device for positioning a selected one of the spools in proximity to the transceiver.

A supply spool adapted to allow a printer to sense type of a media ribbon on the spool, comprising:

• (a) a shaft having a supply of the media ribbon wound thereabout;
• (b) a transponder unit disposed on the spool and responsive to a first electromagnetic field of a predetermined first radio frequency and for generating a second electromagnetic field of a predetermined second radio frequency wherein said transponder is disposed in an end portion of said shaft that is adapted to support the spool for alignment in the printer;
• (c) an electrically erasable programmable read only memory semi-conductor device disposed on said spool and having encoded data stored therein indicative of the type of the media ribbon, said transponder capable of communicating with a transceiver spaced from the spool for receiving the first electromagnetic field to power said transponder and generating the second electromagnetic field as the transponder is powered, the second electromagnetic field being characteristic of the data stored in said memory device, whereby said transceiver unit may sense the second electromagnetic field as said transponder generates the second electromagnetic field;
• wherein an end cap at least in part covers the transponder.

A method of operating a printer to allow the printer to sense type of media on a supply spool, comprising the steps of:

• (a) providing a transceiver for transmitting a first electromagnetic field and for sensing a second electromagnetic field;
• (b) providing a plurality of spools, each spool having a transponder that is disposed in an end portion of the spool and at least in part covered by an end-cap, and each spool having a memory spaced-apart from the transceiver, the memory having data stored therein indicative of the type of the media, and moving each of the spools in turn to position a respective one of the spools in a position to have media material unwound therefrom for use in said printer so that the transponder of the respective one of the spools is positioned to be capable of receiving the first electromagnetic field and to power said memory, 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 the memory;
• and
• (c) coupling the transceiver and a microprocessor included in the printer, the microprocessor processing the data in the second electromagnetic field in order to control operation of the printer.

A method of operating a printer apparatus comprising:

• supporting a plurality of media supply spools on a carousel, each supply spool having a different characteristic, each supply spool including a memory for storing data relative to the characteristic and a transponder, the transponder being disposed in an end portion of the spool and at least in part covered by an end cap;
• providing a transceiver in the apparatus;
• positioning a supply spool in proximity to the transceiver;
• generating a first signal from the transceiver;
• in response to the first signal, activating the transponder to generate second signals relative to the data stored in the memory of the supply spool that is in proximity to the transceiver, the first signal providing power for powering the transponder;
• and
• in response to the second signals adjusting a printing operation in accordance with the data relative to that supply spool.

A method of operating a printer to allow the printer to sense type of media on a supply spool, comprising the steps of:

• (a) providing a transceiver for transmitting a first electromagnetic field and for sensing a second electromagnetic field;
• (b) providing a plurality of spools, each spool having a transponder that is disposed in an end portion of the spool and separated from the printer at least in part by an end-cap, and each spool having a memory spaced-apart from the transceiver, the memory having data stored therein indicative of the type of the media, and moving each of the spools in turn to position a respective one of the spools in a position to have media material unwound therefrom for use in said printer so that the transponder of the respective one of the spools is positioned to be capable of receiving the first electromagnetic field and to power said memory, 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 the memory;
• and
• (c) coupling the transceiver and a microprocessor included in the printer, the microprocessor processing the data in the second electromagnetic field in order to control operation of the printer wherein the data stored in the memory of the supply spool relates to thickness of the media.

A method of operating a printer to allow the printer to sense type of media on a supply spool, comprising the steps of:

• (a) providing a transceiver for transmitting a first electromagnetic field and for sensing a second electromagnetic field;
• (b) providing a plurality of spools, each spool having a transponder that is disposed in an end portion of the spool and separated from the printer at least in part by an end-cap, and each spool having a memory spaced-apart from the transceiver, the memory having data stored therein indicative of the type of the media, and moving each of the spools in turn to position a respective one of the spools in a position to have media material unwound therefrom for use in said printer so that the transponder of the respective one of the spools is positioned to be capable of receiving the first electromagnetic field and to power said memory, 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 the memory;
• and
• (c) coupling the transceiver and a microprocessor included in the printer, the microprocessor processing the data in the second electromagnetic field in order to control operation of the printer wherein the data stored in the memory of the supply spool includes information relative to the amount of material remaining on the spool.