EP0033500A2 - Mécanisme d'entraînement pour un chariot d'impression et un ruban encreur - Google Patents

Mécanisme d'entraînement pour un chariot d'impression et un ruban encreur Download PDF

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Publication number
EP0033500A2
EP0033500A2 EP81100519A EP81100519A EP0033500A2 EP 0033500 A2 EP0033500 A2 EP 0033500A2 EP 81100519 A EP81100519 A EP 81100519A EP 81100519 A EP81100519 A EP 81100519A EP 0033500 A2 EP0033500 A2 EP 0033500A2
Authority
EP
European Patent Office
Prior art keywords
drive
shaft
roller
cord
drive device
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.)
Granted
Application number
EP81100519A
Other languages
German (de)
English (en)
Other versions
EP0033500A3 (en
EP0033500B1 (fr
Inventor
Tadao Fujisawa
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.)
Toshiba TEC Corp
Original Assignee
Tokyo Electric Co Ltd
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 Tokyo Electric Co Ltd filed Critical Tokyo Electric Co Ltd
Publication of EP0033500A2 publication Critical patent/EP0033500A2/fr
Publication of EP0033500A3 publication Critical patent/EP0033500A3/de
Application granted granted Critical
Publication of EP0033500B1 publication Critical patent/EP0033500B1/fr
Expired 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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/02—Ribbon arrangements
    • B41J33/04—Ribbon arrangements mounted on moving carriages
    • 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
    • B41J33/00—Apparatus or arrangements for feeding ink ribbons or like character-size impression-transfer material
    • B41J33/14—Ribbon-feed devices or mechanisms
    • B41J33/24—Ribbon-feed devices or mechanisms with drive applied directly to ribbon

Definitions

  • the invention relates to a drive device for driving a printer carriage, which carries a printer head and transports an ink ribbon.
  • Serial printers in which an ink ribbon cassette is removably arranged on a carriage carrying a printer head are known.
  • the carriage is moved along the print lines by a drive device with a cord or a belt.
  • the ink ribbon in the ink ribbon cassette is driven in accordance with the movement of the carriage by a drive torque transmission device which is separate from the drive device for driving the carriage, for example, in the manner shown in GB-PS 1 493 479
  • the device for transmitting the drive torque for feeding the ink ribbon completely separately from the drive device for the carriage increases the number of components and complicates the construction.
  • the object of the invention is to provide a drive device for driving the printer carriage and the ribbon, which transports the ribbon using the drive torque for the printer carriage.
  • a drive device for a printer carriage and an ink ribbon which comprises a rotatable transport member for the ink ribbon, which feeds ink ribbon from a cassette, a drive member for the printer carriage rotatably mounted on the printer carriage, and also a cord-like member which is in frictional contact with the drive member of the carriage, a drive for driving the drive member along a print line by rotating the link by driving the cord-like member, and finally a one-way clutch which causes the rotation of the drive member for the carriage in a predetermined direction on the rotatable transport member for the ribbon transfers.
  • the rotation of the drive member for the carriage which is used to move the printer carriage, is transmitted to a rotatable transport member for the ribbon to feed the ribbon, so that the number of parts of the components for driving the ribbon is reduced.
  • Figs. 1 and 2 show schematic views of a serial printer which is equipped with the driving device for driving a printer carriage, and D of an ink ribbon according to the invention.
  • the serial printer comprises a housing 2 with side walls 4 and 6, a printing roller 8 which is rotatably mounted in the side walls 4 'and 6 at its opposite ends, a printer carriage 10 which carries a printer head 12, and two guide rods 14 and 16, which are supported at their opposite ends in the side walls 4 and 6.
  • the printer carriage 10 is slidably supported on the guide rods 14 and 16.
  • the printer carriage 10 comprises two resilient arms 22 and 24, which snap-in hold an ink ribbon cassette 18 which contains an ink ribbon 19 and an ink ribbon transport roller 20.
  • the printer carriage 12 also includes a rotatable one Shaft 25 with two line rollers 26 and 28 which are rotatably arranged thereon.
  • the line rollers 26 and 28 interact with a motor 30 on the outside of the side wall 4.
  • a line roller 32 is arranged on the outside of the side wall 6.
  • a string or wire 34 is wrapped sequentially around the line rollers 26, 28 and 30 and a drive shaft 31 on the motor 30 to move the printer carriage 10 along the guide bars 14 and 16.
  • the cord 34 is connected at one end to one end of a spring 36, the other end of which is fixed to the side wall 4. After the line 34 is guided around the line roller 26, it is wound several times around the drive shaft 31 and then wound around the line rollers 32 and 28 in this order and fixed to the side wall 6 at the other end.
  • the line rollers 26 and 28 are coupled to the shaft 25 by one-way clutches 40 and 42 (ie, only in one direction of rotation to create a drive connection), so that the shaft 25 is rotated in a first direction when the line rollers 26 and 28 in rotated in this first direction, and is not rotated when the snap rollers 26 and 28 are rotated in a second direction opposite to the first.
  • the line rollers 26 and 28 are supported on the shaft 25 via bearings (Fig.
  • a coupling element 38 is provided at the upper end of the shaft 25 in such a way that it can be moved in the axial direction of the shaft 25.
  • the roller 20 When the ribbon cassette is clamped on the printer carriage between the flexible arms 22 and 24, the roller 20 is in engagement with the coupling element 38 and presses it downward against the force of a spring 39 according to FIG. 2. Then, when the roller 20 or the shaft 25 is rotated, the roller 20 and the coupling member 38 are coupled together by the action of the spring 39. When this state is reached, the rotation of the shaft 25 is transmitted to the roller 20 via the coupling element 38.
  • the roller 20 is rotatably mounted in the ribbon cassette 18 and drives an endless ribbon (not shown) in the cassette 18 in cooperation with another roller (not shown) which is provided in the ink ribbon cassette 18.
  • the rotation of the shaft 25 for driving the printing carriage 10 along the printing roller 8 is selectively transmitted via the one-way clutches 40 and 42 to the roller 20 for the transport of the ink ribbon.
  • a separate drive device for the drive roller 20 for the ink ribbon is not required, and the ink ribbon can be effectively transported with a reduced number of parts.
  • roller 20 is always rotated in a predetermined direction when the printer carriage is driven in any direction, it can also be driven in a predetermined direction only when the printer carriage is driven in a predetermined direction.
  • FIGS. 5 and 6 Such arrangements are shown in FIGS. 5 and 6.
  • the print carriage 10 is moved along the platen 8, and a line roller 50 and a one-way clutch 52 on a rotatable shaft 25 are used to move the ribbon feed roller 20 in a predetermined direction rotate.
  • the cord 34 is endless and wrapped in several turns around the motor drum 31, in one turn around the cord roller 50 and stretched around the cord roller 32.
  • the cord roller 50 is moved in the direction of arrow B and simultaneously rotated clockwise.
  • the clockwise rotation of the line roller 50 is transmitted through the one-way clutch 52 to the shaft 25 and causes the transport roller 20 for the ink ribbon to rotate in a predetermined direction (FIGS. 1 and 2).
  • the printing carriage 10 is moved along the printing roller 8.
  • a line roller 54 and a one-way clutch 56 are arranged on the rotatable shaft 25 and serve to rotate the transport roller 20 for the ink ribbon in a predetermined direction.
  • the cord 34 is fixed at one end to the side wall 4, is then wrapped around the cord roller 54, is passed in several turns around the drive drum 31 and is stretched over the cord rollers 32 and 54. The other end of the cord 34 is fixed to the side wall 6.
  • the cord roller 54 is moved in the direction of arrow B and at the same time rotated clockwise.
  • This rotation of the line roller 54 is transmitted to the shaft 25 via the one-way clutch 51 and serves to rotate the transport roller 20 for the ink ribbon in a predetermined direction (FIGS. 1 and 2).
  • the cord roller 54 is moved in the direction opposite to the arrow B and at the same time rotated counterclockwise.
  • the counterclockwise rotation of the line roller 54 is not transmitted to the shaft 25, so that the transport roller 20 for the ink ribbon is not rotated.
  • the cord 34 in the drive devices according to FIGS. 3 to 5 can also be replaced by a combination of two cords, one of which is connected at one end to the spring 36 around the cord roll 26 or 54 and is connected at the other end in one or more turns to the drive shaft 31 and the other is connected at one end to the side wall 6 and at the other end after one or more turns is fixed on the drive shaft 31.
  • a cord can be used in the drive device according to FIG. 1, which cord is fixed on the drive shaft 31 at its opposite ends.
  • the one-way clutches 52 and 56 serve to transmit the rotation of the line rollers 50 and 54 to the shaft 52, it is also possible to fix the line rollers 50 and 54 on the shaft 25 and a one-way clutch for the selective transmission of the rotation of the shaft 25 to provide on the transport roller 20.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Common Mechanisms (AREA)
EP81100519A 1980-01-31 1981-01-24 Mécanisme d'entraînement pour un chariot d'impression et un ruban encreur Expired EP0033500B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP933380A JPS56106889A (en) 1980-01-31 1980-01-31 Serial printer
JP9333/80 1980-01-31

Publications (3)

Publication Number Publication Date
EP0033500A2 true EP0033500A2 (fr) 1981-08-12
EP0033500A3 EP0033500A3 (en) 1982-07-14
EP0033500B1 EP0033500B1 (fr) 1984-11-07

Family

ID=11717537

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81100519A Expired EP0033500B1 (fr) 1980-01-31 1981-01-24 Mécanisme d'entraînement pour un chariot d'impression et un ruban encreur

Country Status (6)

Country Link
US (1) US4376586A (fr)
EP (1) EP0033500B1 (fr)
JP (1) JPS56106889A (fr)
AU (1) AU534792B2 (fr)
CA (1) CA1147691A (fr)
DE (1) DE3167006D1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS595083A (ja) * 1982-06-30 1984-01-11 Tokyo Electric Co Ltd シリアルプリンタ
JPS59133089A (ja) * 1983-01-19 1984-07-31 Silver Seiko Ltd タイプライタ
US5657066A (en) * 1992-10-02 1997-08-12 Zebra Technologies Corporation Thermal demand printer
US6464416B1 (en) * 1999-01-26 2002-10-15 Canon Kabushiki Kaisha Apparatus having carriage scanning mechanism, and recording apparatus, information recording/reproducing apparatus, information recording apparatus, information reproduction apparatus, information reading apparatus and information erasing apparatus, each provided with apparatus having carriage scanning mechanism

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904018A (en) * 1971-06-15 1975-09-09 Teletype Corp Ink ribbon mechanism and cartridge for impact printers
US3990564A (en) * 1975-06-25 1976-11-09 Ncr Corporation Ribbon drive mechanism
DE2821135A1 (de) * 1978-05-13 1979-11-15 Philips Patentverwaltung Vorrichtung zum fortschalten des farbbandes einer endlosfarbbandkassette

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3995731A (en) * 1975-06-02 1976-12-07 Ncr Corporation Multi-ribbon cassette and ribbon drive
IT1093436B (it) * 1976-12-29 1985-07-19 Olivetti C Ing E C Spa Cartuccia per un nastro inchiostrato di macchine scriventi e maccanismo per l avanz amento di detto nastro
US4300847A (en) * 1979-05-14 1981-11-17 Qwint Systems, Inc. Teleprinter having single belt carriage and ribbon drive system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3904018A (en) * 1971-06-15 1975-09-09 Teletype Corp Ink ribbon mechanism and cartridge for impact printers
US3990564A (en) * 1975-06-25 1976-11-09 Ncr Corporation Ribbon drive mechanism
DE2821135A1 (de) * 1978-05-13 1979-11-15 Philips Patentverwaltung Vorrichtung zum fortschalten des farbbandes einer endlosfarbbandkassette

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
IBM TECHNICAL DISCLOSURE BULLETIN, Band 19, No. 4, September 1976 New York (US) D.P. DARWIN: "Ribbon Drive" Seiten 1407-1408 * das ganze Artikel * *

Also Published As

Publication number Publication date
US4376586A (en) 1983-03-15
JPS56106889A (en) 1981-08-25
CA1147691A (fr) 1983-06-07
AU6654581A (en) 1981-08-06
DE3167006D1 (en) 1984-12-13
AU534792B2 (en) 1984-02-16
EP0033500A3 (en) 1982-07-14
EP0033500B1 (fr) 1984-11-07

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