US3758012A - Controlled tension ribbon cassette - Google Patents

Controlled tension ribbon cassette Download PDF

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Publication number
US3758012A
US3758012A US00209684A US3758012DA US3758012A US 3758012 A US3758012 A US 3758012A US 00209684 A US00209684 A US 00209684A US 3758012D A US3758012D A US 3758012DA US 3758012 A US3758012 A US 3758012A
Authority
US
United States
Prior art keywords
ribbon
cassette
pressure roll
print head
partition
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.)
Expired - Lifetime
Application number
US00209684A
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English (en)
Inventor
G Bonner
P Brumbaugh
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.)
International Business Machines Corp
Original Assignee
International Business Machines Corp
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 International Business Machines Corp filed Critical International Business Machines Corp
Application granted granted Critical
Publication of US3758012A publication Critical patent/US3758012A/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • B41J32/00—Ink-ribbon cartridges
    • B41J32/02—Ink-ribbon cartridges for endless ribbons

Definitions

  • ABSTRACT An endless ribbon for a wire matrix printer is pulled past the print head as the print head moves along the print line by a feed roll located at the entrance to a cassette which has an elongated gradually-expanding storage chamber which readily permits random folding of the ribbon in the chamber resulting in reduced ribbon tension and more uniform ribbon feed.
  • One object of the invention is toprovide for using a single gradually-expanding chamber into which the ribbon is fed directly by a pressure roll in random loops and from whenceit ispulled with a uniform tension past a print head where it is impacted against a document to print.
  • Another object of the invention is to provide for pivotally supporting an endless ribbon cassette with a resilient stop providing a predetermined relation with a rotatable pressure roll for feeding the ribbon.
  • Yet another object of the lnventionis to provide for operating the pressure roll to feed a ribbon in an endless ribbon cassette in response to movement of the print head during a printing operation.
  • Still another object of the invention is to provide for using a nylon print ribbon in a polypropylene percent talc-filled molded plastic cassette that has a single gradually-expanding ribbon chamber to provide uniform ribbon feed attention for a wire matrix printer.
  • Another important object of the invention is to provide for supporting an external loop of ribbon from an endless ribbon cassette with a twist between two supports which are at least five times the ribbon width apart which is far enough apart to maintain the twist between said supports.
  • an endless ribbon cassette comprises a generally teardropshapcd ribbon storage chamber having an elongated curved partition dividing it into a single chamber of continuously-expanding width for an endless ribbon having a loop which passes between a print head and a document.
  • the cassette is pivotally mounted adjacent its center and has a projecting lip at the outer edge which is biased by a spring-biased lever to press the ribbon against a feed roll.
  • the feed roll is driven through engagement of a toothed drive wheel with a stationary DESCRIPTION OF THE DRAWING
  • FIG. 1 is a partial plan view of a wire matrix printer mechanism embodying the invention in one of its forms
  • FIGS. 2 and 3 are partial right and left end elevation views, respectively, of the mechanism of FIG. 1 with the cassette removed;
  • FIG. 4 is a front elevation view of the bottom or base plate of the ribbon cassette of FIGS. 1 and 2;
  • FIG. 5 is a top plan view of the bottom or base plate of the ribbon cassette
  • FIG. 6 is a plan view from the bottom of the cover of the ribbon cassette.
  • FIG. 7 is afront view in elevation of the ribboncassette cover showing the relation therewith of the stop lever of FIG. 1.
  • the reference .numeral 10 denotes generally a printer carriage-for movinga Print l-Iead l2 and an EndlessRibbon Cassette 14 for feeding an Endless Ribbon 16 past the print head as it moves along the print line for printing on a Document 18, which is backed by a Plateri 20.
  • the Printer Carriage 10 comprises a movable Base 22, which is slidably supported on a Shaft 24 by means of Bearings 26 and 28.
  • Themovable Base 22 is moved in either direction along the print line by a threaded Drive Shaft 30, which is rotatable and has Threads 31 which cooperate with threaded Nuts 32 and 34, secured in openings in the Base '22 by means of Clamp Screws 36.
  • the Base 22 is of a stepped construction having an upper Support Surface 38 to which the Print Head 12 is secured and having lower rearwardly Brackets 40 for supporting the Ribbon. Cassette 14.
  • the Print Head 12 comprises a fan-shaped Support or Base 42 secured to the upper Support Surface 38 by Screws 43 and on which a plurality of magnetic actuators represented by the Actuator 44 are securedfor operating Print Wires 46, which pass through a Guide Member 48 and project from the Tip 49 for impacting the Ribbon 16 against the Document 18 in the manner described in US Pat. No. 3,592.,31 l, which issued on July 13, 1971, to Albert S. Chou and Edgar A. Brown.
  • the Ribbon 16 is stored in the Cassette 14, which is mounted on the movable Base 22 by means of a Cassette Support 50, securedto the Projections 40 of the base by Screws "51 and having an Arm 52 carrying a Pivot Pin 54 on which the Cassette 14 is pivotally mounted.
  • the Cassette 14 comprises a relatively flat Base Plate 56 having Notches 57 about. the periphery and having a curved Partition 58 extending from a central Boss 60, which has an Opening 62 for receiving thePivot 54, toward the outer edge of the Base, dividing-the area of the base into adjoining sections.
  • the Base. 56 is generally teardrop-shaped having a generally circular End Portion 64 with the Boss 62 substantially in the center thereof, and
  • the Bottom or Base Plate 56 of the Cassette 14 is provided with a Cover 70 having a relatively flat Top Portion 71 with a depending peripheral Wall 72, which defines with the curved Partition 58, a single, elongated gradually-expanding passage or chamber for storing the Ribbon 16.
  • a Projection of Rib 69 on the underside of the Top Portion 71 adjacent the Exit opening provides a dam which retards the ribbon exit and helps to restrain multiple folds from exiting.
  • the Wall 72 has one End 73 and in spaced relation therewith an extending flexible Finger Portion 74 which with the outer end of the Partition 58 define Exit and Enhance openings.
  • the Finger 74 carries a U-shaped Clip 76, which provides a guide for the Ribbon 16 entering the cassette.
  • a plurality of Tabs 75 about the Wall 72 cooperate with the Notches 57 of the Base 56 to secure the Cover and Base in operating relation.
  • Base Plate 56 and Cover 70 may be held together by ultrasonic welding, if desired.
  • a projecting Guide Rib 77 adjacent the End 73 provides a guide surface for the Ribbon 16.
  • the Cassette 14 when mounted on the Pivot Pin 54, has the flexible Finger Portion 74 located next to a Pressure Roll 78, positioned in the Entrance opening. This roll is rotated to feed the Ribbon 16 into the Cassette 14 through the Entrance opening in a plurality of random loops.
  • the Ribbon 16 exists between the Wall 72 and the Partition 58, where it passes through a Guide Clip 80 projecting in spaced relation with the side Wall 72, past the Print Head 12 in cooperation with Guide Pins 84 and 86, whence it has, as shown, a 180 degree mobeus twist 17 which interchanges the inside and outside surfaces of the ribbon, and passes along the surface of the Cassette Support 50 inside a projectingGuide Pin 88, through the Guide Clip 76 to the Pressure Roll 78, which feeds it back into the Cassette 14.
  • the Pressure Roll 78 is mounted on a Shaft 90, which is rotatably mounted in the Cassette Support 50 by means of a lower Bearing 91 and has a pair of toothed Drive Wheels 92 and 94 secured thereto adjacent the lower end by means of one-wayClutch Mechanisms 96 and 98 in the hubs thereof, respectively.
  • the toothed Drive Wheels 92 and 94 engage straight sections of toothed Belts 100 and 102, which may be attached to the frame of the printer.
  • the one-way Clutches 96 and 98 are so disposed that the Pressure Roll 78 will be driven in a counterclockwise direction to feed the Ribbon 16 into the Cassette l4 regardless of which direction the Printer Carriage is traveling in.
  • the flexible Finger 74 of the cassette side Wall 72 is maintained in predetermined relation to the Pressure Roll 78 by means of a pivoted Pressure Lever 104, which is pivotally mounted on the Cassette Support 50 and is biased in the direction of the Cassette 14 by means ofa Spring 106.
  • the Lever H04 has a projecting Stop 108, which engages the flexible Finger 74 to bias it against the Pressure Roll 78 for feeding the Ribbon 16.
  • a spring pressure on the order of two pounds has been found suitable.
  • a Locking Tab 110 formed at one end of the Pressure Lever 104 engages an angular Projection 112 from the side Wall 72 to lock the Cassette 14 in the opcrating position.
  • the flexible Rack Belts 100 and 102 cause the toothed Drive Wheels 92 and 94 to rotate. Because of the oneway Drive Clutches 96 and 98 the Pressure Roll 12 will always be rotated in a counterclockwise direction, causing the Ribbon 16 to move because of the pressure exerted against the roll by the extending Finger 74 of the side Wall 72 of the cassette.
  • the tension is controlled by means of the Pressure Lever 104, which is biased against the flexible Finger 74 by means of the Spring 106.
  • the Ribbon 16 moves, it is guided by the throat of the cassette, into an expanding curve, which because of the gradually-expanding width of the chamber allows the ribbon to relax as it moves toward the exit, but still retains its original stuffing pattern.
  • the Wall 72 is curved so as to provide with the Partition 58 a single, continuous gradually-expanding ribbon chamber in order to effect controlled folding of the ribbon in the cassette.
  • the mobeus twist in the ribbon twists the ribbon degrees and provides for increased fabric life and more even feeding since opposite sides of the ribbon are impacted by the print head 12 on successive passes by the print head. By locating this twist between supports which are at least five times the width of the ribbon apart this twist may be maintained at this location despite continuous movement of the ribbon around its path.
  • a cassette for an endless ribbon comprising a bottom member having an integral partition extending from a central portion toward an edge portion thereof to define a single continuous passage of gradually-expanding width for storing random folds of said ribbon, and
  • a cover secured to said bottom member having a depending side wall about the edge thereof, defining with said bottom member said passage and provided with openings at the edge ends of said partition to provide both an exit and an entrance for an external loop of said ribbon,
  • said cassette being generally circularand said bottom portion of said cassette having a central boss at the end of said partition pivotally mounting said cassette at its center on a support which has a pressure roll rotatably mounted on a shaft in said opening, and said side wall having a projecting flexible tongue on one side of said opening defining with said pressure roll the entrance for said ribbon.

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  • Impression-Transfer Materials And Handling Thereof (AREA)
US00209684A 1971-12-20 1971-12-20 Controlled tension ribbon cassette Expired - Lifetime US3758012A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US20968471A 1971-12-20 1971-12-20

Publications (1)

Publication Number Publication Date
US3758012A true US3758012A (en) 1973-09-11

Family

ID=22779823

Family Applications (1)

Application Number Title Priority Date Filing Date
US00209684A Expired - Lifetime US3758012A (en) 1971-12-20 1971-12-20 Controlled tension ribbon cassette

Country Status (6)

Country Link
US (1) US3758012A (de)
JP (2) JPS4870521A (de)
CH (1) CH540124A (de)
DE (1) DE2260663C3 (de)
FR (1) FR2165444A5 (de)
GB (1) GB1375454A (de)

Cited By (24)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805407A (en) * 1971-03-01 1974-04-23 Vepa Ag Apparatus for heat treatment of cables laid in folds
US3871507A (en) * 1972-06-05 1975-03-18 Donald S Perry Spoolless ribbon cartridge with lift and feed features combined
JPS516715A (de) * 1974-07-03 1976-01-20 Ibm
US3973707A (en) * 1975-08-28 1976-08-10 Ncr Corporation Stuffed ribbon cartridge
US3977512A (en) * 1975-06-30 1976-08-31 The Singer Company Ribbon cassette and ribbon advance
US3989132A (en) * 1974-08-26 1976-11-02 General Electric Company Ribbon storage and transport mechanism
US3993182A (en) * 1975-10-14 1976-11-23 Trw Inc. Endless inked ribbon cartridge
US3994383A (en) * 1975-02-05 1976-11-30 Ncr Corporation Stuffed ribbon cartridge
US3995731A (en) * 1975-06-02 1976-12-07 Ncr Corporation Multi-ribbon cassette and ribbon drive
US4090600A (en) * 1976-09-22 1978-05-23 Ncr Corporation Printing device forms compensation and ribbon control means
DE2758790A1 (de) * 1976-12-29 1978-07-06 Olivetti & Co Spa Farbbandkassette fuer druckmaschinen und mechanismus zum zufuehren des farbbandes
US4213715A (en) * 1977-04-18 1980-07-22 Nixdorf Computer Ag Ink ribbon cartridge having a replaceable ribbon magazine
US4240757A (en) * 1978-12-26 1980-12-23 Centronics Data Computer Corp. Fanfold replacement ribbon package
US4284364A (en) * 1979-02-21 1981-08-18 Exxon Research & Engineering Co. Ribbon tensioning for a cartridge with flexible guides
US4303345A (en) * 1979-06-20 1981-12-01 Sycor, Inc. Ink ribbon drive for data printers
US4304496A (en) * 1979-04-02 1981-12-08 Sycor, Inc. Ribbon guiding and re-inking means for data printers and the like
US4325646A (en) * 1979-02-16 1982-04-20 Oki Electric Industry Co., Ltd. Inkribbon cartridge
US4405247A (en) * 1978-06-05 1983-09-20 Centronics Data Computer Corp. Fully self-contained disposable cartridge for inked ribbons and the like
US4479729A (en) * 1982-07-05 1984-10-30 Siemens Aktiengesellschaft Stuffing cassette with external drive
US4601594A (en) * 1982-12-24 1986-07-22 Seikosha Co., Ltd. Endless ink ribbon cassette having selective ribbon tension control
US4630948A (en) * 1982-09-30 1986-12-23 Genicom Corporation Inked ribbon cartridge
US4651944A (en) * 1985-05-06 1987-03-24 Signode Corporation Strap accumulator
US4688955A (en) * 1979-09-28 1987-08-25 Oki Electric Industry Co., Ltd. Automatic ribbon positioning serial printer
US4743133A (en) * 1982-09-30 1988-05-10 General Electric Company Inked ribbon cartridge

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3814231A (en) * 1973-04-24 1974-06-04 Scm Corp Stuffed ribbon cartridge
JPS5159528A (ja) * 1974-11-12 1976-05-24 Ncr Co Kasetsutonainoribonkudokiko
JPS599358B2 (ja) * 1975-02-08 1984-03-01 株式会社パイロット リボンカ−トリツジ
JPS5211410U (de) * 1975-07-11 1977-01-26
DE2534535C2 (de) * 1975-08-01 1986-03-06 Siemens AG, 1000 Berlin und 8000 München Kassette für ein endloses Farbband in einer Schreibmaschine oder ähnlichen Maschinen
JPS5479714A (en) * 1977-12-07 1979-06-26 Nippon Telegraph & Telephone Ink ribbon cassette
JPS54121821A (en) * 1978-03-15 1979-09-21 Oki Electric Ind Co Ltd Endless ink ribbon cartridge
JPS5525344A (en) * 1978-08-11 1980-02-23 Tokyo Electric Co Ltd Ribbon cassette case
JPS5813368Y2 (ja) * 1978-11-22 1983-03-15 株式会社山武 計器のダイヤル回転トルク調整装置
US4472074A (en) * 1978-12-26 1984-09-18 Hermes Precisa International, S.A. Cartridge for dye-impregnated endless ribbon
US4269520A (en) * 1978-12-26 1981-05-26 Precisa Ag Rechenmaschinenfabrik Cartridge for dye-impregnated endless ribbon
DE3138111C2 (de) * 1981-09-24 1983-08-18 Siemens AG, 1000 Berlin und 8000 München Kassette für Gewebefarbbänder zur gestellfesten Anbringung in Druckern
DE3138110C1 (de) * 1981-09-24 1983-04-07 Siemens AG, 1000 Berlin und 8000 München Kassette für Gewebefarbbänder zur gestellfesten Anbringung in Druckern
DE3234991A1 (de) * 1982-09-22 1984-03-22 Olympia Werke Ag, 2940 Wilhelmshaven Transportvorrichtung fuer farb- oder korrekturbaender in schreib- oder aehnlichen bueromaschinen
JP2535212B2 (ja) * 1988-09-22 1996-09-18 ソニーマグネスケール株式会社 無終端テ―プ収納装置
KR930004628Y1 (ko) * 1990-09-21 1993-07-22 주식회사 에스케이씨 비디오 테이프 카세트
DE202011100668U1 (de) * 2011-05-11 2012-08-14 Herma Gmbh Motorischer Vorroller mit Schlaufenbildner

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1296476A (en) * 1917-10-09 1919-03-04 Ad Photoscope Company Inc Motion-pictrue-film magazine.
US1297049A (en) * 1918-03-29 1919-03-11 Carl S Webster Film-magazine for motion-picture machines.
US1525939A (en) * 1922-04-10 1925-02-10 Oscar J Holmes Motion-picture apparatus
US2476705A (en) * 1945-01-08 1949-07-19 Coutant Andre Cinematographic camera
US3346161A (en) * 1965-12-29 1967-10-10 Dasa Corp Tape magazine having loop blocking means

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE869491C (de) * 1949-11-24 1953-03-05 Robert Koreska Farbbandeinrichtung fuer Schreibmaschinen
US3464611A (en) * 1967-10-23 1969-09-02 Hewlett Packard Co Continuous loop tape storage and supply unit
US3613976A (en) * 1970-02-19 1971-10-19 Rca Corp Apparatus for handling endless tape
US3693859A (en) * 1971-08-04 1972-09-26 Eastman Kodak Co Web slack box having a rotatable web accumulator

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US1296476A (en) * 1917-10-09 1919-03-04 Ad Photoscope Company Inc Motion-pictrue-film magazine.
US1297049A (en) * 1918-03-29 1919-03-11 Carl S Webster Film-magazine for motion-picture machines.
US1525939A (en) * 1922-04-10 1925-02-10 Oscar J Holmes Motion-picture apparatus
US2476705A (en) * 1945-01-08 1949-07-19 Coutant Andre Cinematographic camera
US3346161A (en) * 1965-12-29 1967-10-10 Dasa Corp Tape magazine having loop blocking means

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3805407A (en) * 1971-03-01 1974-04-23 Vepa Ag Apparatus for heat treatment of cables laid in folds
US3871507A (en) * 1972-06-05 1975-03-18 Donald S Perry Spoolless ribbon cartridge with lift and feed features combined
JPS57204159U (de) * 1974-07-03 1982-12-25
JPS516715A (de) * 1974-07-03 1976-01-20 Ibm
JPS6350125Y2 (de) * 1974-07-03 1988-12-22
US3989132A (en) * 1974-08-26 1976-11-02 General Electric Company Ribbon storage and transport mechanism
US3994383A (en) * 1975-02-05 1976-11-30 Ncr Corporation Stuffed ribbon cartridge
US3995731A (en) * 1975-06-02 1976-12-07 Ncr Corporation Multi-ribbon cassette and ribbon drive
US3977512A (en) * 1975-06-30 1976-08-31 The Singer Company Ribbon cassette and ribbon advance
US3973707A (en) * 1975-08-28 1976-08-10 Ncr Corporation Stuffed ribbon cartridge
US3993182A (en) * 1975-10-14 1976-11-23 Trw Inc. Endless inked ribbon cartridge
US4090600A (en) * 1976-09-22 1978-05-23 Ncr Corporation Printing device forms compensation and ribbon control means
US4232976A (en) * 1976-12-29 1980-11-11 Ing. C. Olivetti & C., S.P.A. Ribbon cartridge for printing machines and mechanism for feeding the ribbon
DE2758790A1 (de) * 1976-12-29 1978-07-06 Olivetti & Co Spa Farbbandkassette fuer druckmaschinen und mechanismus zum zufuehren des farbbandes
US4213715A (en) * 1977-04-18 1980-07-22 Nixdorf Computer Ag Ink ribbon cartridge having a replaceable ribbon magazine
US4405247A (en) * 1978-06-05 1983-09-20 Centronics Data Computer Corp. Fully self-contained disposable cartridge for inked ribbons and the like
US4240757A (en) * 1978-12-26 1980-12-23 Centronics Data Computer Corp. Fanfold replacement ribbon package
US4325646A (en) * 1979-02-16 1982-04-20 Oki Electric Industry Co., Ltd. Inkribbon cartridge
US4284364A (en) * 1979-02-21 1981-08-18 Exxon Research & Engineering Co. Ribbon tensioning for a cartridge with flexible guides
US4304496A (en) * 1979-04-02 1981-12-08 Sycor, Inc. Ribbon guiding and re-inking means for data printers and the like
US4303345A (en) * 1979-06-20 1981-12-01 Sycor, Inc. Ink ribbon drive for data printers
US4688955A (en) * 1979-09-28 1987-08-25 Oki Electric Industry Co., Ltd. Automatic ribbon positioning serial printer
US4479729A (en) * 1982-07-05 1984-10-30 Siemens Aktiengesellschaft Stuffing cassette with external drive
US4630948A (en) * 1982-09-30 1986-12-23 Genicom Corporation Inked ribbon cartridge
US4743133A (en) * 1982-09-30 1988-05-10 General Electric Company Inked ribbon cartridge
US4601594A (en) * 1982-12-24 1986-07-22 Seikosha Co., Ltd. Endless ink ribbon cassette having selective ribbon tension control
US4651944A (en) * 1985-05-06 1987-03-24 Signode Corporation Strap accumulator

Also Published As

Publication number Publication date
DE2260663B2 (de) 1977-10-13
DE2260663A1 (de) 1973-07-05
GB1375454A (de) 1974-11-27
FR2165444A5 (de) 1973-08-03
JPS539814U (de) 1978-01-27
CH540124A (de) 1973-08-15
JPS544975Y2 (de) 1979-03-03
JPS4870521A (de) 1973-09-25
DE2260663C3 (de) 1982-04-29

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