Method for making a magnetic transducer head cleaning card
AssigneeVisa Technologies, Inc.
InventorVictor Monia
Life of this patent
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Abstract
A card is provided for cleaning transducer heads of magnetically-encoded card reading machines. The card includes a surface region disposed for contacting such a transducer head and releasably holds a head cleaning solvent adjacent the surface region. The material forming the surface region may be visually distinguishable when it is holding solvent as compared to when it is not. Further, this material may be translucent when holding solvent. If so, the material immediately next to the solvent-holding material is a color which is visible through the material. Also, the card may have layers which are joined by heat-bonding. The side of the card opposite from the surface region then preferably is another color.
Claims5
In a method of producing a head cleaning card for holding solvent for cleaning transducer heads of a magnetically-encoded-card reading machine, providing a layer of material which is generally rigid at ambient conditions, and heat bonding the layer of material onto a layer of fabric capable of releasably holding solvent and capable of changing color when said solvent is consumed.
A method of producing a head cleaning card package for holding freon-containing solvent for cleaning transducer heads of a magnetically-encoded-card reading machine comprising:
- heat plastifying two separate quantities of thermoplastic material having distinguishable colors;
- co-extruding the quantities of thermoplastic material into a layer having a face of each color;
- heat bonding onto one face of the extruded layer a layer of resinous fabric capable of releasably holding such solvent and being characterized as being translucent when holding the solvent;
- cutting from the bonded layers a card suitable for insertion adjacent the transducer heads of a card-reading machine;
- applying sufficient solvent to the card to wet the fabric;
- and
- isolating the solvent-wetted card from the ambient atmosphere in a manner preventing substantial loss of solvent from the card.
Dependencies are inferred from the claim text.