Sensor hub for a print ribbon supply roll and method

• US 6,152,625 A
• Filed: 07/27/1999
• Issued: 11/28/2000
• Est. Priority Date: 07/27/1999
• Status: Expired due to Term

• Current Assignee: Assa Abloy AB, Miliessa Nevmann
• Original Assignee: Fargo Electronics Inc. (Assa Abloy AB)
• Inventors: Oliverio, Michael S.
• Primary Examiner(s): EICKHOLT, EUGENE H
• Application Number:
  US09/361,618
• Time in Patent Office: 490 Days
• Field of Search: 400/247, 400/249, 400/207, 400/208, 400/196
• US Class Current: 400/247
• CPC Class Codes: B41J 35/36 Alarms, indicators, or feed disabling devices responsive to ink ribbon breakage or exhaustion

Abstract

A sensor hub for a print ribbon supply roll includes a sleeve shaped to attach to the roll core of the print ribbon supply roll, a pin-receiving plate secured to the sleeve and including a plurality of apertures, and a plurality of pins permanently secured in selected ones of the apertures. The pins are arranged in the apertures according to a print ribbon type to thereby identify the print ribbon type. The sleeve, pin-receiving plate and pins are preferably molded in a single step operation, thereby decreasing manufacturing time and reducing manufacturing costs. By molding the sleeve and pin-receiving plate around the pins, the pins can be permanently secured in the apertures of the pin-receiving plate, and the mold cavity can be constructed so as to eliminate susceptibility to human error.

Claims

1. A sensor hub for a print ribbon supply roll including a roll core, the sensor hub comprising:

a sleeve shaped to attach to the roll core of the print ribbon supply roll;

a pin-receiving plate secured to said sleeve and including a plurality of apertures; and

a plurality of pins permanently secured in selected ones of said apertures, said pins being arranged in the selected ones of said apertures according to a print ribbon type to thereby identify the print ribbon type.

2. A sensor hub according to claim 1, wherein said pin-receiving plate is formed integral with said sleeve.

3. A sensor hub according to claim 2, wherein said sleeve and said pin-receiving plate are formed of a plastic material.

4. A sensor hub according to claim 3, wherein said sleeve and said pin-receiving plate are formed of high-impact polystyrene.

5. A sensor hub according to claim 1, wherein at least two of said pins are secured in adjacent apertures, designating a home position.

6. A sensor hub according to claim 1, wherein said pins are formed of a ferromagnetic material.

7. A sensor hub according to claim 6, wherein said pins are magnetized.

8. A sensor hub according to claim 1, wherein each of said pins comprises a circumferential groove therein, said groove receiving said pin-receiving plate.

9. A sensor hub according to claim 8, wherein said pins are molded with said pin-receiving plate.

10. A sensor hub according to claim 1, wherein said pins are molded with said pin-receiving plate.

11. A sensor hub according to claim 1, wherein said sleeve is substantially cylindrical and comprises a tapered end, said sleeve being dimensioned to fit into the roll core of the print ribbon supply roll.

12. A sensor hub according to claim 11, wherein said sleeve, said pin-receiving plate, and said pins are constructed of a one-piece integral unit that is molded in a single step.

13. A sensor hub according to claim 1, further comprising a deflector disposed on a sleeve side of said pin-receiving plate.

14. A sensor hub according to claim 1, wherein said sleeve, said pin-receiving plate, and said pins are constructed of a one-piece integral unit that is molded in a single step.

15. A sensor hub according to claim 1, further comprising a user indicator of the print ribbon type.

16. A sensor hub according to claim 15, wherein the user indicator comprises color coding.

17. A print ribbon supply roll comprising:

a roll core;

a print ribbon wrapped around said roll core, said print ribbon being of a predetermined type; and

a sensor hub secured to said roll core and including;

a sleeve shaped to attach to said roll core,

a pin-receiving plate secured to said sleeve and including a plurality of apertures, and

a plurality of pins permanently secured in selected ones of said apertures, said pins being arranged in the selected ones of said apertures according to said print ribbon type to thereby identify the print ribbon type.

18. A print ribbon supply roll according to claim 17, wherein said pin-receiving plate is formed integral with said sleeve.

19. A print ribbon supply roll according to claim 18, wherein said sleeve and said pin-receiving plate are formed of a plastic material.

20. A print ribbon supply roll according to claim 19, wherein said sleeve and said pin-receiving plate are formed of high-impact polystyrene.

21. A print ribbon supply roll according to claim 17, wherein said pins are formed of a ferromagnetic material.

22. A print ribbon supply roll according to claim 21, wherein said pins are magnetized.

23. A print ribbon supply roll according to claim 17, wherein each of said pins comprises a circumferential groove therein, said groove receiving said pin-receiving plate.

24. A print ribbon supply roll according to claim 23, wherein said pins are molded with said pin-receiving plate.

25. A print ribbon supply roll according to claim 17, wherein said pins are molded with said pin-receiving plate.

26. A print ribbon supply roll according to claim 17, wherein said sleeve is substantially cylindrical and comprises a tapered end, said sleeve being dimensioned to fit into the roll core of the print ribbon supply roll.

27. A print ribbon supply roll according to claim 26, wherein said sleeve, said pin-receiving plate, and said pins are constructed of a one-piece integral unit that is molded in a single step.

28. A print ribbon supply roll according to claim 17, further comprising a deflector disposed on a sleeve side of said pin-receiving plate.

29. A print ribbon supply roll according to claim 17, wherein said sleeve, said pin-receiving plate, and said pins are constructed of a one-piece integral unit that is molded in a single step.

30. A print ribbon supply roll according to claim 17, wherein the sensor hub further comprises a user indicator of the print ribbon type.

31. A print ribbon supply roll according to claim 30, wherein the user indicator comprises color coding.

32. A method of manufacturing a sensor hub for a print ribbon supply roll, the print ribbon supply roll including a roll core, and the sensor hub including a sleeve shaped to attach to the roll core of the print ribbon supply roll, a pin-receiving plate having a plurality of apertures, and a plurality of pins permanently secured in selected ones of the apertures, the pins being arranged in the selected ones of the apertures according to a print ribbon type to thereby identify the print ribbon type, the method comprising molding the sleeve, the pin-receiving plate and the pins in a single step.

33. A method according to claim 32, further comprising, prior to the molding step, the step of supporting the pins in a mold cavity.

34. A method according to claim 33, wherein the supporting step is practiced by preventing misplacement of the pins by blocking unused apertures in the mold cavity.

35. A method according to claim 32, wherein the molding step is practiced by molding the sleeve and the pin-receiving plate around the pins.

36. A method according to claim 35, wherein the molding step is practiced by injection molding a plastic material into a mold cavity.

37. A sensor hub for a print ribbon supply roll manufactured according to the method of claim 32.

38. A method of manufacturing a print ribbon supply roll including a roll core, a print ribbon wrapped around the roll core, and a sensor hub secured to the roll core, the sensor hub including a sleeve shaped to attach to the roll core, a pin-receiving plate having a plurality of apertures, and a plurality of pins permanently secured in selected ones of the apertures, the pins being arranged in the selected ones of the apertures according to a print ribbon type to thereby identify the print ribbon type, the method comprising:

molding the sleeve, the pin-receiving plate and the pins of the sensor hub in a single step; and

attaching the sensor hub to the roll core.

39. A method according to claim 38, wherein the attaching step is performed by ultrasonic welding.

40. A method according to claim 38, wherein the molding step comprises molding the pin-receiving plate with a deflector disposed on a sleeve side of the pin-receiving plate.

41. A method according to claim 40, wherein the attaching step is performed by ultrasonic welding the deflector of the pin-receiving plate to the roll core.

42. A print ribbon supply roll manufactured according to the method of claim 38.