US3891078A - Ribbon shifting arrangement - Google Patents

Ribbon shifting arrangement Download PDF

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Publication number
US3891078A
US3891078A US450560A US45056074A US3891078A US 3891078 A US3891078 A US 3891078A US 450560 A US450560 A US 450560A US 45056074 A US45056074 A US 45056074A US 3891078 A US3891078 A US 3891078A
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US
United States
Prior art keywords
ribbon
fork
movement
raised position
ribbon fork
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
US450560A
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English (en)
Inventor
Friedrich Jung
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.)
TA Triumph Adler GmbH
Original Assignee
Triumph Werke Nuernberg AG
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 Triumph Werke Nuernberg AG filed Critical Triumph Werke Nuernberg AG
Application granted granted Critical
Publication of US3891078A publication Critical patent/US3891078A/en
Assigned to TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INFORMATIONSTECHNIK reassignment TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INFORMATIONSTECHNIK CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). EFFECTIVE DATE 8/13/80 Assignors: TRIUMPH WERKE NURNBERG AKTIENGESELLSCHAFT
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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    • 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
    • B41J35/00—Other apparatus or arrangements associated with, or incorporated in, ink-ribbon mechanisms
    • B41J35/04—Ink-ribbon guides
    • B41J35/10—Vibrator mechanisms; Driving gear therefor
    • B41J35/12—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift
    • B41J35/14—Vibrator mechanisms; Driving gear therefor adjustable, e.g. for case shift for multicolour work; for ensuring maximum life of ink ribbon; for rendering ink-ribbon inoperative

Definitions

  • the print wheel is rotatably driven [21] PP N 450,560 by a pivoting gear segment to position a selected character for printing, and the ribbon fork is normally lim- F i n A li ti Pri it D t ited to the lowered position by an armature of an un- Apr 27 1973 Germany 7316036 energized Control magnet which is Spring biased blocking relation with a control pawl linked to the rib- [52] U S Cl 197/156 97/151, 197/157. bon fork.
  • the ribbon is moved to the raised position 197/159 by first energizing the control magnet to pull the ar- 51 1m.
  • RIBBON SI-IIFTING ARRANGEMENT This invention relates to a printer, for example an electric calculating machine, and more particularly to an arrangement for shifting a conventional composite bichrome ribbon from a lowered position to a raised position to effect printing with different colored portions of the ribbon.
  • an object of the invention is to provide a spring powered ribbon shifting arrangement which effects shifting under the control of a magnet without having to overcome the frictional engagement of a magnetic armature and a control pawl which also prevents movement of the ribbon beyond the upper position.
  • FIG. 1 is a partial diagrammatic view of a printer having a ribbon shifting arrangement constructed in accordance with the present invention and illustrating the arrangement in a rest condition with the ribbon conditioned for elevation to a first or black ribbon position;
  • FIG. 2 is a view similar to FIG. 1 and illustrating the arrangement in an operated condition with the ribbon elevated to a second or red position.
  • a printer generally indicated 11, of an electric calculator for printing characters, such as numerals, on a recording medium 13.
  • the recording medium 13 is supported on a platen 15 adjacent a print wheel 17 having a plurality of different characters 19 spaced along the periphery, and selected characters 19 may be positioned for printing by moving a gear drive, generally indicated by the arrow I in FIG. 1, to rotate the print wheel 17 and bring a desired character 19 into printing relation with the platen 15 such as shown in FIG. 2.
  • a gear drive generally indicated by the arrow I in FIG. 1
  • an inked ribbon 23 is mounted on conventional guide rollers 25 of a ribbon fork 27, and printing is effected by moving the platen in the direction indicated by the arrow II in FIG.
  • the platen 15 is returned to its rest position and the print wheel 17 is reversely rotated as the gear drive 21 returns to the rest position shown in FIG. 1.
  • the recording medium 13 may be advanced along the platen l5 and the ribbon 23 may be moved along the guide rollers 25.
  • the recording medium 13 is carried on a cylindrical platen 15 supported by a shaft 16, and the print wheel 17 is concentrically mounted on a rotatable shaft 29 along with a gear wheel 31.
  • the gear wheel 31 forms a part of the gear drive 21 and meshes with a gear segment 33 mounted on a shaft 35 which may be rotatably driven by suitable means, not shown.
  • the ribbon fork 27 is pivotally mounted on a shaft 37 with an arm 27 extending toward the gear segment 33, and the ribbon fork 27 is resiliently biased for movement to a raised position by a spring 39 stretched between the arm 27 and a suitable portion 40 of the printer 11.
  • the ribbon 23 may be a composite bichrome ribbon of red and black longitudinally extending stripes with the characters 19 normally being printed in black.
  • the ribbon 23 is supported on the guide rollers 25 of the ribbon fork 27 with the black portion on top, and the ribbon fork 27 is adapted to be raised from the rest position shown in FIG. 1, to a first position or to a second higher position so that the upper black portion or the lower red portion of the ribbon 23 respectively is impacted against the selected character 19 during printing.
  • the spring-biased ribbon fork 27 moves from the rest position to the first or black position established by an armature 41 of a control magnet 43 normally positioned in blocking relation with a hook portion 45 of a control pawl 47 pivotally linked to the ribbon fork 27.
  • the control magnet 43 is normally deenergized to present the black portion of the ribbon 23 for printing and the armature-41 is pivotally supported and resiliently biased into blocking relation with the control pawl 47 by a spring 49 suitably stretched between the armature 41 and the control magnet 43.
  • the ribbon 23 When it is desired to print a character in a different color, for example red, the ribbon 23 is raised to a second or red position, as shown in FIG. 2, to bring the lower or red portion of the ribbon 23 into printing relation with a selected character 19.
  • the control magnet 43 is energized to pull the armature 41 away from the control pawl 47 against the urging of the spring 49.
  • the ribbon shifting arrangement includes a projecting stop 51 on the gear segment 33 which engages the downwardly extending inwardly bent arm 27 of the ribbon fork 27 and holds it in rest position slightly below the first or black position when the gear segment 33 is in the rest position. Accordingly, when a character 19 is selected for printing using the upper or black portion of the ribbon 23, the movement of segment stop 51 away from arm 27' will permit the ribbon fork 27 to rotate about its pivot 37 clockwise until the hook portion 45 of the control pawl 47 engages the armature 41 of the deenergized magnet 43.
  • control magnet 43 when it is desired to print a character 19 using the lower or red portion of the ribbon 23, the control magnet 43 is energized to pull the armature 41 from blocking relation with the control pawl 47 and then the gear segment 33 is moved to position a selected character 19 for printing, thereby controlling, as stop 51 on the gear segment raised position, the control pawl 47 has an elongated slot 53 slidably receiving a stop pin 55 which engages an end of the slot 53 when the ribbon fork 27 reaches the second raised position.
  • the ribbon fork 27 is returned to the rest position shown in FIG. 1 by the engagement of the stop 51 with the arm 27' as the gear segment 33 returns to the rest position. Subsequently, the control magnet 43 is deenergized to enable the armature 41 to again move under the urging of the spring 49 into blocking relation with the control pawl 47.
  • a print wheel supported for rotation about an axis and having a plurality of characters on the periphery with associated gear means for rotation therewith,
  • a ribbon fork pivotally supported for movement from a rest position to a first raised position and a second raised position to bring different portions of the ribbon into printing relation with a selected character on the print wheel
  • said gear segment having an abutment thereon engaging said ribbon fork in the rest position prcventing movement of said ribbon fork to a raised position and permitting movement of said ribbon fork to a raised position only as the gear segment moves from its rest position to rotatably position a type character for printing.
  • control pawl having an elongated slot formed therein extending in the direction of movement of said ribbon fork between said rest and a raised position
  • a pin stop slidably received in the slot formed in said pawl and limiting the movement of said ribbon fork to the second raised position.
  • said pawl having an elongated slot formed therein extending in the direction of movement of said ribbon fork between said rest and a raised position

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US450560A 1973-04-27 1974-03-13 Ribbon shifting arrangement Expired - Lifetime US3891078A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE7316036 1973-04-27

Publications (1)

Publication Number Publication Date
US3891078A true US3891078A (en) 1975-06-24

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Family Applications (1)

Application Number Title Priority Date Filing Date
US450560A Expired - Lifetime US3891078A (en) 1973-04-27 1974-03-13 Ribbon shifting arrangement

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US (1) US3891078A (enrdf_load_stackoverflow)
JP (1) JPS5516680Y2 (enrdf_load_stackoverflow)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2304477A1 (fr) * 1975-03-20 1976-10-15 Siemens Ag Montage pour commuter la fourchette porte-ruban de couleur d'une machine a imprimer
US4008662A (en) * 1975-03-10 1977-02-22 Ricoh Co., Ltd. Printer ribbon drive apparatus
US4175876A (en) * 1976-11-15 1979-11-27 Shinshu Seiki Kabushiki Kaisha Drive mechanism for printer
US4364679A (en) * 1981-02-17 1982-12-21 Scm Corporation Cartridge ribbon lift apparatus
US4398838A (en) * 1980-09-26 1983-08-16 Triumph-Adler A.G. Fur Buro- Und Informationstechnik Typewriter ribbon lifting and transporting device
US4643601A (en) * 1984-09-28 1987-02-17 International Business Machines Corporation Ribbon positioning mechanism
EP0218387A3 (en) * 1985-09-23 1988-01-07 Xerox Corporation Ribbon lift mechanism
US4983057A (en) * 1985-05-27 1991-01-08 Tokyo Electric Co., Ltd. Ribbon position selecting device for printer

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5635553B2 (enrdf_load_stackoverflow) * 1973-05-23 1981-08-18
JPS5644523Y2 (enrdf_load_stackoverflow) * 1976-03-13 1981-10-19

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3304859A (en) * 1963-06-14 1967-02-21 Monroe Calculating Machine Ribbon-displacing device for the printing mechanism of calculating machines and the like
US3349888A (en) * 1962-09-12 1967-10-31 Royal Typewriter Co Inc Vibrator type ribbon handling mechanism
US3415349A (en) * 1964-12-30 1968-12-10 Tokyo Electric Co Ltd Multicolor printing device for business machines and equipment
US3513957A (en) * 1966-09-20 1970-05-26 Olivetti & Co Spa Ink ribbon cartridge for a typewriter,teleprinter or similar office machines
US3666070A (en) * 1970-06-29 1972-05-30 Ibm Differential mechanism for positioning a type character on a type element
US3795185A (en) * 1970-02-27 1974-03-05 Suwa Seikosha Kk Compact flying printer

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3349888A (en) * 1962-09-12 1967-10-31 Royal Typewriter Co Inc Vibrator type ribbon handling mechanism
US3304859A (en) * 1963-06-14 1967-02-21 Monroe Calculating Machine Ribbon-displacing device for the printing mechanism of calculating machines and the like
US3415349A (en) * 1964-12-30 1968-12-10 Tokyo Electric Co Ltd Multicolor printing device for business machines and equipment
US3513957A (en) * 1966-09-20 1970-05-26 Olivetti & Co Spa Ink ribbon cartridge for a typewriter,teleprinter or similar office machines
US3795185A (en) * 1970-02-27 1974-03-05 Suwa Seikosha Kk Compact flying printer
US3666070A (en) * 1970-06-29 1972-05-30 Ibm Differential mechanism for positioning a type character on a type element

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4008662A (en) * 1975-03-10 1977-02-22 Ricoh Co., Ltd. Printer ribbon drive apparatus
FR2304477A1 (fr) * 1975-03-20 1976-10-15 Siemens Ag Montage pour commuter la fourchette porte-ruban de couleur d'une machine a imprimer
US4033446A (en) * 1975-03-20 1977-07-05 Siemens Aktiengesellschaft Three-position ribbon guide for printer
US4175876A (en) * 1976-11-15 1979-11-27 Shinshu Seiki Kabushiki Kaisha Drive mechanism for printer
US4398838A (en) * 1980-09-26 1983-08-16 Triumph-Adler A.G. Fur Buro- Und Informationstechnik Typewriter ribbon lifting and transporting device
US4364679A (en) * 1981-02-17 1982-12-21 Scm Corporation Cartridge ribbon lift apparatus
US4643601A (en) * 1984-09-28 1987-02-17 International Business Machines Corporation Ribbon positioning mechanism
US4983057A (en) * 1985-05-27 1991-01-08 Tokyo Electric Co., Ltd. Ribbon position selecting device for printer
EP0218387A3 (en) * 1985-09-23 1988-01-07 Xerox Corporation Ribbon lift mechanism

Also Published As

Publication number Publication date
JPS5516680Y2 (enrdf_load_stackoverflow) 1980-04-18
JPS5097511U (enrdf_load_stackoverflow) 1975-08-14

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AS Assignment

Owner name: TRIUMPH-ADLER AKTIENGESELLSLCHAFT FUR BURO-UND INF

Free format text: CHANGE OF NAME;ASSIGNOR:TRIUMPH WERKE NURNBERG AKTIENGESELLSCHAFT;REEL/FRAME:003935/0913

Effective date: 19800813