EP0168393A1 - Cassette a bande avec indicateur d'alimentation - Google Patents

Cassette a bande avec indicateur d'alimentation

Info

Publication number
EP0168393A1
EP0168393A1 EP19840900807 EP84900807A EP0168393A1 EP 0168393 A1 EP0168393 A1 EP 0168393A1 EP 19840900807 EP19840900807 EP 19840900807 EP 84900807 A EP84900807 A EP 84900807A EP 0168393 A1 EP0168393 A1 EP 0168393A1
Authority
EP
European Patent Office
Prior art keywords
peripheral wall
cassette
adjacent
curved portion
curved
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP19840900807
Other languages
German (de)
English (en)
Inventor
Thomas K. Mcgourty
Lawrence F. Mcgourty
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Varitronic Systems Inc
Original Assignee
Varitronic Systems Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Varitronic Systems Inc filed Critical Varitronic Systems Inc
Publication of EP0168393A1 publication Critical patent/EP0168393A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00—Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/58—Supply holders for sheets or fan-folded webs, e.g. shelves, tables, scrolls, pile holders
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J15/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, specially adapted for supporting or handling copy material in continuous form, e.g. webs
    • B41J15/02—Web rolls or spindles; Attaching webs to cores or spindles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H75/00—Storing webs, tapes, or filamentary material, e.g. on reels
    • B65H75/02—Cores, formers, supports, or holders for coiled, wound, or folded material, e.g. reels, spindles, bobbins, cop tubes, cans, mandrels or chucks
    • B65H75/18—Constructional details

Definitions

  • This invention relates generally to a tape cassette or cartridge presently intended for use in connection with printing or typing equipment using a pressure process to transfer dry film impressions onto an image carrying tape.
  • the cassette includes an indicator capable of displaying the amount of tape remaining.
  • the carrier tape employed in such machines is used in large volume and thus the cassette holding the tape must be easy to load, capable of accurately indi ⁇ cating the amount of tape remaining and, above all, inexpensive to manufacture so as to keep the retail cost at a minimum. A device having all of these requirements is difficult to achieve.
  • the present invention discloses a unique structure which provides an accurate supply read-out with a minimum of components while achieving an easy to handle package.
  • FIGURE 1 is a perspective view of the backside of a preferred embodiment of the present invention.
  • FIGURE 2 is a top plan view of the cassette with a portion of a printing machine shown in which the cassette may be employed;
  • FIGURE 3 is a sectional view of the cassette as seen from the lines 3-3 of FIGURE 2;
  • FIGURE 4 is an enlarged detail sectional view of a portion of the indicator mechanism.
  • FIGURE 5 is a view taken along the lines 5-5 of FIGURE 1.
  • FIGURE 1 of the drawings shows a perspective view of the backside of the tape cassette 610.
  • the cassette preferably in- eludes two planar walls 612 and 614 and a peripheral side wall 616 connecting the planar walls 612, 614.
  • a hook member 620 is affixed to the outer surface of wall 612.
  • the tape 622 exits the cassette at aperature 624.
  • FIGURE 2 shows the cassette installed within a typical environment wherein numeral 628 refers gener ⁇ ally to a printing apparatus.
  • the top portion 630 of the peripheral wall 616 includes a slot 632 and gra ⁇ duations 634 which permit the indicator (described hereinafter) to show the percent or the actual amount of tape supply remaining within the cassette.
  • FIGURE 3 shows the cassette in place with one of the planar walls removed.
  • a spindle 636 generally centered within the cassette which holds a tape supply spool 638.
  • a curved planar member 640 Pivotally mounted within the cassette is a curved planar member 640 which is pivoted at one end 642 and 'has a flat portion 644 -at its other end.
  • the curvature of member 640 is further designed to approximate the shape of the supply spool 638 at its maximum diameter. This arc of curvature is only accurate however in the center portion of curved member 640. Other embodiments could use different cur ⁇ vatures.
  • the flat member 644 is preferably painted with a red color so that it is clearly visible within slot 632 (see FIGURE 2).
  • Indicator 640 is biased against the tape supply 638 at all times by a bias mechanism 646 shown in FIGURES 4 and 5. This provides the extra benefit of drag on the tape so that it stays generally on the spool.
  • a coil spring 648 is affixed at one end to the curved member by wrapping a portion 650 of the curved member 640 around one of the helical coils of the spring. The spring is then seated in a socket 652 against the peripheral wall 616 of the cassette.
  • planar member 640 In operation, tape 622 is withdrawn from the supply 638 and the diameter of the spool decreases. Planar member 640 then follows a path toward the spindle to a final position 654 shown by phantom lines when the tape supply is exhausted. Because the planar wall section 616a adiacent the flat portion 644. of member 640 is preferably curved to follow the trace of portion 644, the view through slot 632 always shows an indicator approximately the same distance from the slot throughout the life of the tape supply. In this way accuracy is thus maintained.
  • pivot point 642 is located about halfway across the transverse measurement of the cassette or approximately at the center of the curva- ture of wall portion 630.

Landscapes

  • Printers Characterized By Their Purpose (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

Une cassette à bande utilisée dans un dispositif d'impression est formée de préférence de deux parois planes (612, 614) et reliées par une paroi périphérique (616). Une partie de la paroi périphérique (616) possède une fente (632) au travers de laquelle l'on peut voir l'indicateur (640). L'indicateur (640) est de préférence incurvé de sorte qu'il chevauche la courbure extérieure de la bobine (638). Un dispositif de sollicitation (646) sollicite l'indicateur contre la bobine pour maintenir effective une lecture. Une partie de la paroi périphérique (616a) est de préférence incurvée pour approcher la trace de l'extrémité éloignée de l'indicateur (640) et maintenir une lecture constante.
EP19840900807 1984-01-20 1984-01-20 Cassette a bande avec indicateur d'alimentation Withdrawn EP0168393A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/US1984/000094 WO1985003258A1 (fr) 1984-01-20 1984-01-20 Cassette a bande avec indicateur d'alimentation

Publications (1)

Publication Number Publication Date
EP0168393A1 true EP0168393A1 (fr) 1986-01-22

Family

ID=22182017

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19840900807 Withdrawn EP0168393A1 (fr) 1984-01-20 1984-01-20 Cassette a bande avec indicateur d'alimentation

Country Status (2)

Country Link
EP (1) EP0168393A1 (fr)
WO (1) WO1985003258A1 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1317404A (en) * 1919-09-30 thomas
US1090128A (en) * 1913-01-21 1914-03-17 Franklin H Avers Indicating device for moving-picture films.
NL96310C (fr) * 1955-06-10
US3691921A (en) * 1970-06-11 1972-09-19 Cubic Corp Microfilm magazine
FR2188906A5 (fr) * 1972-06-07 1974-01-18 Salomon Koechli Jean Cl

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO8503258A1 *

Also Published As

Publication number Publication date
WO1985003258A1 (fr) 1985-08-01

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Legal Events

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PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

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AK Designated contracting states

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18D Application deemed to be withdrawn

Effective date: 19851227

RIN1 Information on inventor provided before grant (corrected)

Inventor name: MCGOURTY, LAWRENCE, F.

Inventor name: MCGOURTY, THOMAS, K.