Claims
- 1. 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.
- 2. The method of claim 1 wherein said step of providing includes heat plastifying a quantity of thermoplastic material and extruding the heat plastified material into said layer.
- 3. The method of claim 2 wherein said step of heat bonding is performed using the heat resulting from said extruding.
- 4. The method of claim 2 wherein said plastifying further includes plastifying separate quantities of thermoplastic material having distinguishable colors, said extruding further including the step of co-extruding the quantities of thermoplastic material into a single layer having a face of each color, and the fabric is further characterized as being translucent when holding solvent.
- 5. 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.
Parent Case Info
This is a division of application Ser. No. 704,163, filed Feb. 22, 1985.
US Referenced Citations (4)
Foreign Referenced Citations (1)
Number |
Date |
Country |
181422 |
May 1986 |
EPX |
Non-Patent Literature Citations (1)
Entry |
Dillon, "Device for Cleaning Head in Magnetic Card or Reader", IBM Tech. Disc. Bull., vol. 21, No. 8, Jan. 1979. |
Divisions (1)
|
Number |
Date |
Country |
Parent |
704613 |
Feb 1985 |
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