WO1995019265A1 - Re-inkable ribbon cartridge - Google Patents

Re-inkable ribbon cartridge Download PDF

Info

Publication number
WO1995019265A1
WO1995019265A1 PCT/US1995/000333 US9500333W WO9519265A1 WO 1995019265 A1 WO1995019265 A1 WO 1995019265A1 US 9500333 W US9500333 W US 9500333W WO 9519265 A1 WO9519265 A1 WO 9519265A1
Authority
WO
WIPO (PCT)
Prior art keywords
ink
ribbon
base member
storage chamber
cartridge
Prior art date
Application number
PCT/US1995/000333
Other languages
French (fr)
Inventor
Allen W. Putman
Original Assignee
Pelikan, 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 Pelikan, Inc. filed Critical Pelikan, Inc.
Priority to AU15626/95A priority Critical patent/AU1562695A/en
Priority to CA002181173A priority patent/CA2181173C/en
Priority to EP95907373A priority patent/EP0739273A4/en
Publication of WO1995019265A1 publication Critical patent/WO1995019265A1/en

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J31/00Ink ribbons; Renovating or testing ink ribbons
    • B41J31/14Renovating or testing ink ribbons
    • B41J31/16Renovating or testing ink ribbons while fitted in the machine using the ink ribbons

Definitions

  • the present invention relates to a ribbon cartridge for printing devices including typewriters and printers, and is more particularly concerned with ribbon cartridges which have endless ribbons that are re-inkable.
  • the ribbon ink that is being depleted during printing is replenished through a reservoir of ink held in either a foam pad or in a circular foam roll.
  • the ink is transferred onto the fabric ribbon by applying the ink from the foam pad or foam roll to a transfer roller that meters the ink from the transfer roller to the fabric ribbon. This keeps the ink from puddling in one spot on the ribbon when it sits idle between print sessions.
  • this structure does not provide a solution to the problem of maintaining a uniform darkness of the print during the life of the ink ribbon cartridge.
  • the present invention solves the problem of maintaining a uniform darkness of print during the life of the cartridge by providing an ink reservoir pad which holds a supply of ink, a wick which extends from the ink reservoir pad to provide for capillary flow of the ink do a press wheel which meters the ink onto the ribbon, and a spring which presses the wick against the press wheel.
  • Fig. 1 is an exploded view of an ink ribbon cartridge constructed in accordance with this invention
  • Fig. 2 is a view in partial assembly in perspective of the re-inkable cartridge of the invention.
  • Ribbon cartridge 11 for use in a printing device such as a typewriter or printer for printing on a sheet of paper.
  • Ribbon cartridge 11 comprises a case 13 having a base member 19.
  • An exit arm 15 and an entrance arm 17 extend from the base member 19.
  • Case 13 has a bottom wall 13a and an upstanding sidewall 13b extending upwardly from the periphery 13c of the bottom wall 13a.
  • a ribbon storage chamber 23 is formed in base member 19 to hold an ink ribbon 25 which may be made of nylon and which passes from ribbon storage chamber 23 through the exit arm 15, through the print space 21, and returns to the ribbon storage chamber 23 through the entrance arm 17.
  • a drive wheel 27 is mounted in the base member 19 for moving the ribbon 25 out of the storage chamber 23, and a press wheel 29 helps to move the ribbon 25 by pressing the ribbon 25 against the drive wheel 27 so that the ribbon is pinched between the drive wheel 27 and press wheel 29 to pull the ribbon 25 out of the storage chamber 23.
  • Press wheel 29 also provides for metering and transferring ink to the ribbon 27.
  • An ink reservoir chamber 31 is formed in the base member 19, and contains a foam pad 33 which is filled with ink.
  • a wick 35 extends from the foam pad 33 and contacts the press wheel 29 to transfer ink by capillary action from the foam pad 33 through the wick 35 and into the teeth 29a of press wheel 29.
  • Wick 35 has a positioning notch 35a in its lower edge 35b, and has a reduced portion 35c at its forward end portion.
  • a leaf spring 37 is provided for pressing the wick 35 against the press wheel 29 and this assists in obtaining constant or consistent darkness of print.
  • Spring 37 has a positioning notch 37a in its lower edge 37b, and case 13 has a positioning ridge formed on the upper surface of bottom wall 13a for receiving the positioning notch 37a of the spring 37.
  • a cover 39 is provided for covering the case 13.
  • leaf spring 37 is shown as a flat leaf spring made of stainless steel which applies force to the press wheel 29, a compression spring or a leaf spring made of other stiff material may be used to press the wick 35 against the press wheel 29.
  • the wick 35 transfers ink from the foam pad 33 to the teeth 29a of press wheel 29 which transfers the ink to the ribbon 25 as it passes between press wheel 29 and drive wheel 27.
  • the metering teeth 29a of the press and transfer wheel 29 pick up a metered amount of ink from the wick 35 which receives only a certain amount of ink because of the capillary action. This keeps the ink from puddling on one spot on the ribbon when the press and transfer wheel 29 sits idle between print sessions, as it would if the ribbon were in direct contact with a foam pad or roll.
  • a polyester ribbon shield 41 is mounted on ends 15a, 17a of exit arm 15 and of entrance arm 17 across the print space 21.
  • the ribbon 25 may be made of nylon, and the case 13, cover 39, and drive wheel 27 may be made of a synthetic resin plastic such as ABS.
  • the ink used in foam pad 33 is preferably a black matrix ink containing fatty acids, fatty esters, and a black dye. It has a viscosity of about 325 cps at 78°F, a boiling point over 300°F, is insoluble in water and may be obtained from N.H.
  • the foam for foam pad 33 may be reticulated polyester polyurethane open pore foam, tensile strength about 50-110 psi, ultimate elongation about 250-350%, tear strength about 5-18 lb/inch, about 90 pores per linear inch, and may be obtained from
  • the permeability of the foam at 0.5 in. of water pressure equals about 65-200 cfm/sq.ft. using test procedure ASTM D3574.
  • the wick material for wick 35 is preferably

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)

Abstract

A re-inkable ribbon cartridge (11) for use in a printing device for printing on a sheet of paper and obtaining a consistent darkness of print. The ribbon cartridge (11) has a base member (19) with an exit arm (15) and an entrance arm (17) extending from the base member (19) with a print space between ends of the arms. A ribbon storage chamber (23) is formed in the base member (19), an ink ribbon (25) extends from the ribbon storage chamber (23), through the exit arm (15), the print space (21), and the entrance arm (17) to return to the ribbon storage chamber (23). A drive wheel (27) is mounted in the cartridge for moving the ribbon (25) out of the storage chamber (23) with a press wheel (29) that presses the ribbon (25) against the drive wheel (27) and meters ink onto the ribbon (25). An ink reservoir chamber (31) is formed in the cartridge, and a foam pad (33) containing ink is positioned in the ink reservoir chamber (31). A wick (35) extends from the foam pad (33) and contacts the press wheel (29) to transfer ink by capillary action from the foam pad (33) to the press wheel (29) which meters the ink onto the ribbon (25). A spring (37) presses the wick (35) against the press wheel (29).

Description

RE-INKABLE RIBBON CARTRIDGE BACKGROUND OF THE INVENTION
Field of the Invention
The present invention relates to a ribbon cartridge for printing devices including typewriters and printers, and is more particularly concerned with ribbon cartridges which have endless ribbons that are re-inkable.
Description of the Prior Art
A problem with a number of conventional ink ribboncartridges or cassettes in use today with typewriters and printers is that the darkness of the print fades during the life of the ribbon.
In several of the conventional cartridges, the ribbon ink that is being depleted during printing is replenished through a reservoir of ink held in either a foam pad or in a circular foam roll. The ink is transferred onto the fabric ribbon by applying the ink from the foam pad or foam roll to a transfer roller that meters the ink from the transfer roller to the fabric ribbon. This keeps the ink from puddling in one spot on the ribbon when it sits idle between print sessions. However, this structure does not provide a solution to the problem of maintaining a uniform darkness of the print during the life of the ink ribbon cartridge. SUMMARY OF THE INVENTION
The present invention solves the problem of maintaining a uniform darkness of print during the life of the cartridge by providing an ink reservoir pad which holds a supply of ink, a wick which extends from the ink reservoir pad to provide for capillary flow of the ink do a press wheel which meters the ink onto the ribbon, and a spring which presses the wick against the press wheel.
BRIEF DESCRIPTION OF THE DRAWINGS
Fig. 1 is an exploded view of an ink ribbon cartridge constructed in accordance with this invention; and Fig. 2 is a view in partial assembly in perspective of the re-inkable cartridge of the invention.
DETAILED DESCRIPTION OF THE DRAWINGS
Turning now to the drawings, there is shown a re-inkable ribbon cartridge or cassette 11 for use in a printing device such as a typewriter or printer for printing on a sheet of paper. Ribbon cartridge 11 comprises a case 13 having a base member 19. An exit arm 15 and an entrance arm 17 extend from the base member 19. Case 13 has a bottom wall 13a and an upstanding sidewall 13b extending upwardly from the periphery 13c of the bottom wall 13a. There is a print space 21 between end 15a of exit arm 15 and end 17a of entrance arm 17. A ribbon storage chamber 23 is formed in base member 19 to hold an ink ribbon 25 which may be made of nylon and which passes from ribbon storage chamber 23 through the exit arm 15, through the print space 21, and returns to the ribbon storage chamber 23 through the entrance arm 17.
A drive wheel 27 is mounted in the base member 19 for moving the ribbon 25 out of the storage chamber 23, and a press wheel 29 helps to move the ribbon 25 by pressing the ribbon 25 against the drive wheel 27 so that the ribbon is pinched between the drive wheel 27 and press wheel 29 to pull the ribbon 25 out of the storage chamber 23. Press wheel 29 also provides for metering and transferring ink to the ribbon 27.
An ink reservoir chamber 31 is formed in the base member 19, and contains a foam pad 33 which is filled with ink. A wick 35 extends from the foam pad 33 and contacts the press wheel 29 to transfer ink by capillary action from the foam pad 33 through the wick 35 and into the teeth 29a of press wheel 29. Wick 35 has a positioning notch 35a in its lower edge 35b, and has a reduced portion 35c at its forward end portion.
A leaf spring 37 is provided for pressing the wick 35 against the press wheel 29 and this assists in obtaining constant or consistent darkness of print. Spring 37 has a positioning notch 37a in its lower edge 37b, and case 13 has a positioning ridge formed on the upper surface of bottom wall 13a for receiving the positioning notch 37a of the spring 37.
A cover 39 is provided for covering the case 13.
While leaf spring 37 is shown as a flat leaf spring made of stainless steel which applies force to the press wheel 29, a compression spring or a leaf spring made of other stiff material may be used to press the wick 35 against the press wheel 29.
In operation, the wick 35 transfers ink from the foam pad 33 to the teeth 29a of press wheel 29 which transfers the ink to the ribbon 25 as it passes between press wheel 29 and drive wheel 27. The metering teeth 29a of the press and transfer wheel 29 pick up a metered amount of ink from the wick 35 which receives only a certain amount of ink because of the capillary action. This keeps the ink from puddling on one spot on the ribbon when the press and transfer wheel 29 sits idle between print sessions, as it would if the ribbon were in direct contact with a foam pad or roll. As shown in the drawings, a polyester ribbon shield 41 is mounted on ends 15a, 17a of exit arm 15 and of entrance arm 17 across the print space 21. The ribbon 25 may be made of nylon, and the case 13, cover 39, and drive wheel 27 may be made of a synthetic resin plastic such as ABS.
The ink used in foam pad 33 is preferably a black matrix ink containing fatty acids, fatty esters, and a black dye. It has a viscosity of about 325 cps at 78°F, a boiling point over 300°F, is insoluble in water and may be obtained from N.H.
Labo, Harrisburg, PA. , as their catalog number 900A 0% black matrix ink. The foam for foam pad 33 may be reticulated polyester polyurethane open pore foam, tensile strength about 50-110 psi, ultimate elongation about 250-350%, tear strength about 5-18 lb/inch, about 90 pores per linear inch, and may be obtained from
Scotfoam, Eddiptone, PA as their catalog number 4- 900Z. The permeability of the foam at 0.5 in. of water pressure equals about 65-200 cfm/sq.ft. using test procedure ASTM D3574. The wick material for wick 35 is preferably
Porex XN-1304 polyurethane foam with air flow of 900-2500 in/ in at an inlet pressure of 1.2 inch (water) and may be obtained from Porex Technologies Corp., P.O. Box 100394, Atlanta, GA 30384.

Claims

1. A re-inkable ribbon cartridge for use in a printing device for printing on a sheet of paper, comprising a cartridge having a case with a base member, an exit arm and an entrance arm extending from the base member with a print space between ends of the arms, said case having a bottom wall with an upstanding sidewall extending upwardly from the periphery of the bottom wall, a ribbon storage chamber formed in the base member, an ink ribbon extending from the ribbon storage chamber and through the exit arm, the print space, and the entrance arm to return to the ribbon storage chamber, drive wheel means mounted in the base member for moving the ribbon out of the storage chamber, press wheel ink transfer means for pressing the ribbon against the drive wheel means and for metering ink to the ribbon, an ink reservoir chamber formed in the base member, a foam pad containing ink positioned in the ink reservoir chamber, wick means extending from the foam pad and contacting the press wheel ink transfer means for metering ink by capillary action from the foam ink pad through the wick means and to the press wheel ink transfer means, spring means for pressing the wick means against the press wheel ink transfer means to obtain a consistent darkness of print; and a cover for covering the case.
2. The re-inkable ribbon cartridge of claim
1, said spring means comprising a leaf spring having a positioning notch in its lower edge, said case having a positioning ridge formed on its upper surface for receiving said positioning notch of the spring.
3. The re-inkable ribbon cartridge of claim 1, wherein said foam pad in the reservoir chamber comprises a reticulated polyester polyurethane open pore foam with tensile strength of about 50-110psi, ultimate elongation of about 350%, tear strength of about 5-18 lb/inch, and about 90 pores per linear inch.
4. The re-inkable ribbon cartridge of claim
1, said ink comprising a black matrix ink containing fatty acids, fatty esters, and a black dye, with a viscosity of about 325cps at 78°F, and a boiling point over 300°F, said ink being insoluble in water.
5. The re-inkable ribbon cartridge of claim 1, said wick means comprising a polyurethane foam with an airflow of about 900-2500in/min at an inlet pressure of 1.2inch (water).
6. A re-inkable ribbon cartridge for use in a printing device for printing on a sheet of paper, comprising a cartridge having a case with a base member, an exit arm and an entrance arm extending from the base member with a print space between ends of the arms, said case having a bottom wall with an upstanding sidewall extending upwardly from the periphery of the bottom wall, a ribbon storage chamber formed in the base member, an ink ribbon extending from the ribbon storage chamber and through the exit arm, the print space, and the entrance arm to return to the ribbon storage chamber, drive wheel means mounted in the base member for moving the ribbon out of the storage chamber, press wheel ink transfer means for pressing the ribbon against the drive wheel means and for metering ink to the ribbon, an ink reservoir chamber formed in the base member, a foam pad containing ink positioned in the ink reservoir chamber, wick means extending from the foam pad and contacting the press wheel ink transfer means for metering ink by capillary action from the foam ink pad through the wick means and to the press wheel ink transfer means, spring means for pressing the wick means against the press wheel ink transfer means to obtain a consistent darkness of print; and a cover for covering the case, said spring means comprising a leaf spring having a positioning notch in its lower edge, said case having a positioning ridge formed on its upper surface for receiving said positioning notch of the spring, said foam pad in the reservoir chamber comprising a reticulated polyester polyurethane open pore foam with tensile strength of about 50-110psi, ultimate elongation of about 350%, tear strength of about 5-18 lb/inch, and about 90 pores per linear inch, said ink comprising a black matrix ink containing fatty acids, fatty esters, and a black dye, with a viscosity of about 325cps at 78°F, a boiling point over 300°F, said ink being insoluble in water, said wick means comprising a polyurethane foam with an airflow of about 900-2500in/min at an inlet pressure of 1.2inch (water).
PCT/US1995/000333 1994-01-13 1995-01-12 Re-inkable ribbon cartridge WO1995019265A1 (en)

Priority Applications (3)

Application Number Priority Date Filing Date Title
AU15626/95A AU1562695A (en) 1994-01-13 1995-01-12 Re-inkable ribbon cartridge
CA002181173A CA2181173C (en) 1994-01-13 1995-01-12 Re-inkable ribbon cartridge
EP95907373A EP0739273A4 (en) 1994-01-13 1995-01-12 Re-inkable ribbon cartridge

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US08/180,719 1994-01-13
US08/180,719 US5399033A (en) 1994-01-13 1994-01-13 Re-inkable ribbon cartridge

Publications (1)

Publication Number Publication Date
WO1995019265A1 true WO1995019265A1 (en) 1995-07-20

Family

ID=22661496

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US1995/000333 WO1995019265A1 (en) 1994-01-13 1995-01-12 Re-inkable ribbon cartridge

Country Status (5)

Country Link
US (1) US5399033A (en)
EP (1) EP0739273A4 (en)
AU (1) AU1562695A (en)
CA (1) CA2181173C (en)
WO (1) WO1995019265A1 (en)

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Publication number Priority date Publication date Assignee Title
JP3348747B2 (en) * 1994-04-26 2002-11-20 株式会社小松製作所 Rubber track core metal, rubber track and winding method thereof
JPH08132717A (en) * 1994-11-11 1996-05-28 Nec Corp Ink supply device
US5713676A (en) * 1997-02-28 1998-02-03 Ncr Corporation Ink ribbon cassette having flexible spacers
US5868506A (en) * 1998-04-22 1999-02-09 Ncr Corporation Selective inking cassette
ATE545513T1 (en) 2008-12-25 2012-03-15 Brother Ind Ltd TAPE PRINTER
US8382389B2 (en) 2008-12-25 2013-02-26 Brother Kogyo Kabushiki Kaisha Tape cassette
EP2236303B1 (en) 2009-03-31 2012-10-10 Brother Kogyo Kabushiki Kaisha Tape printer
CN102361760B (en) 2009-03-31 2015-04-01 兄弟工业株式会社 Tape cassette
CN104691118B (en) 2009-03-31 2017-10-13 兄弟工业株式会社 Tape drum
JP5136503B2 (en) 2009-03-31 2013-02-06 ブラザー工業株式会社 Tape cassette
EP3106314B1 (en) 2009-03-31 2022-04-27 Brother Kogyo Kabushiki Kaisha Tape cassette and tape printer
WO2011001487A1 (en) 2009-06-30 2011-01-06 Brother Kogyo Kabushiki Kaisha Tape cassette and tape printer
EP2514600B1 (en) 2009-12-16 2015-01-21 Brother Kogyo Kabushiki Kaisha Tape cassette
EP2520437B1 (en) 2009-12-28 2015-05-20 Brother Kogyo Kabushiki Kaisha Tape cassette

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4616942A (en) * 1983-08-22 1986-10-14 Ncr Corporation Ribbon cassette with re-inking mechanism
US4747713A (en) * 1985-06-27 1988-05-31 Oki Electric Industry Co., Ltd. Ink ribbon cassette including gear teeth configured to re-ink the ribbon
US4747711A (en) * 1986-02-28 1988-05-31 Ing. C. Olivetti & C., S.P.A. Cartridge for an inked ribbon with a re-inking device
US4838715A (en) * 1987-02-24 1989-06-13 Pilot Man-Nen Hitsu Kabushiki Kaisha Ink ribbon cassette
US4988225A (en) * 1988-04-25 1991-01-29 Jing Tech, Inc. Continuous self-inking ribbon cartridge system

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US4364678A (en) * 1979-07-30 1982-12-21 Telex Computer Products, Inc. Reinkable ribbon cartridge
US4636097A (en) * 1980-05-20 1987-01-13 Monarch Marking Systems, Inc. Replaceable inking cartridge with depletion counter
JPS5836161U (en) * 1981-09-02 1983-03-09 株式会社ブリヂストン ink ribbon cassette
US4913571A (en) * 1988-11-03 1990-04-03 International Business Machines Corporation Re-inking roller and transfer roller assembly
JPH037373A (en) * 1989-06-05 1991-01-14 Seiko Epson Corp Structure of ribbon cassette
JP2740343B2 (en) * 1990-08-10 1998-04-15 日立粉末冶金株式会社 Ink ribbon cassette
DE4141611A1 (en) * 1991-12-17 1993-06-24 Turbon International Ag Colour ink printer ribbon cassette - has ink transferred from reservoir to print ribbon via absorbent blanket held against contact roller

Patent Citations (5)

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Publication number Priority date Publication date Assignee Title
US4616942A (en) * 1983-08-22 1986-10-14 Ncr Corporation Ribbon cassette with re-inking mechanism
US4747713A (en) * 1985-06-27 1988-05-31 Oki Electric Industry Co., Ltd. Ink ribbon cassette including gear teeth configured to re-ink the ribbon
US4747711A (en) * 1986-02-28 1988-05-31 Ing. C. Olivetti & C., S.P.A. Cartridge for an inked ribbon with a re-inking device
US4838715A (en) * 1987-02-24 1989-06-13 Pilot Man-Nen Hitsu Kabushiki Kaisha Ink ribbon cassette
US4988225A (en) * 1988-04-25 1991-01-29 Jing Tech, Inc. Continuous self-inking ribbon cartridge system

Non-Patent Citations (1)

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Title
See also references of EP0739273A4 *

Also Published As

Publication number Publication date
EP0739273A1 (en) 1996-10-30
CA2181173A1 (en) 1995-07-20
CA2181173C (en) 2006-01-03
US5399033A (en) 1995-03-21
AU1562695A (en) 1995-08-01
EP0739273A4 (en) 1997-03-26

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