EP0679526B1 - Grundgewebe für schreibband und herstellungsverfahren - Google Patents

Grundgewebe für schreibband und herstellungsverfahren Download PDF

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Publication number
EP0679526B1
EP0679526B1 EP93924798A EP93924798A EP0679526B1 EP 0679526 B1 EP0679526 B1 EP 0679526B1 EP 93924798 A EP93924798 A EP 93924798A EP 93924798 A EP93924798 A EP 93924798A EP 0679526 B1 EP0679526 B1 EP 0679526B1
Authority
EP
European Patent Office
Prior art keywords
base fabric
ink ribbon
scouring
wrinkles
fabric
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
EP93924798A
Other languages
English (en)
French (fr)
Other versions
EP0679526A4 (de
EP0679526A1 (de
Inventor
Nobutake Hiroe
Kenji Hama
Junko Kuroda
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.)
Toray Industries Inc
Original Assignee
Toray Industries 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 Toray Industries Inc filed Critical Toray Industries Inc
Publication of EP0679526A1 publication Critical patent/EP0679526A1/de
Publication of EP0679526A4 publication Critical patent/EP0679526A4/de
Application granted granted Critical
Publication of EP0679526B1 publication Critical patent/EP0679526B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime 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
    • B41J31/00—Ink ribbons; Renovating or testing ink ribbons
    • B41J31/02—Ink ribbons characterised by the material from which they are woven
    • B41J31/04—Ink ribbons characterised by the material from which they are woven woven from synthetic material

Definitions

  • This invention relates to a base fabric for an ink ribbon for use in impact-type printers such as serial dot printers and line printers, and a method for its manufacture.
  • This ink ribbon for a cassette has the drawback of generating uneven printing called graphic spots in which dark spots are generated at the folded portions of the ink ribbon.
  • JP-A-3-34883 and JP-A-3-73378 propose method of producing weave constructions respectively, of a fancy plain weave and of weave constructions other than a plain weave including twill and satin.
  • This invention proposes a method of manufacturing an ink ribbon which has especially excellent properties such as good ink absorbability and freedom from graphic spots.
  • This invention adopts the following method for achieving these purposes.
  • the base fabric of this invention for ink ribbon is made of polyamide multifilament, and characterized in that said base fabric has wrinkles of class 3 or more defined by the level determined according to the method of JIS L 1096.
  • this fabric can be manufactured by a method of manufacturing a base fabric for an ink ribbon comprising scouring, drying and heat setting a base fabric made of a polyamide multifilament, in which method said scouring is a jet flow scouring and said heat setting is carried out under such tension that wrinkles of class 3 or more are left.
  • This invention was achieved as a result of intensive study for obtaining a base fabric which does not cause graphic spots, and it was found that certain kinds of wrinkle function particularly effectively, and further, that such kinds of wrinkle are formed by jet flow scouring, and this wrinkle has a close relationship with the improvement of the fabric in terms of the level of graphic spots.
  • the inventors realized that wrinkles, which traditionally have not been desired, have a particularly important function concerning the level of graphic spots, and after intensive investigation, found that a base fabric which has wrinkles of class 3 or more defined substantially by the determination of wrinkle level based on JIS L1096 (6.23) shows great improvement.
  • the wrinkle level although the level higher than class 3, namely class 2 or 1, shows better results for reducing graphic spots, fabrics having more wrinkles are inferior in their appearance, and it is preferable to use a base fabric having a wrinkle level of class 3 to class 2.
  • This fabric which has such a specified level of wrinkles can be manufactured by crumpling.
  • the crumpling can be achieved by a mechanical crumpling, wrinkle-forming process, or by a fluid (preferably with air or water).
  • a fluid preferably with air or water.
  • Jet flow scouring of a base fabric for an ink ribbon is disclosed in JP-A-59-127789 and JP-A-61-104882, however, these documents do not teach anything about a method of and conditions for improving the fabric in terms of the level of graphic spots.
  • the above described jet flow scouring is carried out under relaxed conditions such as by means of a jet flow dying machine or washer.
  • these scouring methods preferably, by scouring with hot water at above 60°C and under 135°C, and lowering the temperature at a rate of 10°C/min or less, the above described specified wrinkles can be formed, and in addition, by this wrinkling, a base fabric for an ink ribbon with excellent performance which does not show graphic spots can be supplied.
  • a specific character of these wrinkles is that they include wrinkles oriented in the lengthwise direction.
  • the base fabric for an ink ribbon manufactured by the above described scouring method is not only free from graphic spots, owing to the large shrinkage which occurs during the scouring-drying step and the increased void ratio in the base fabric, but also has good affinity to ink and excellent ink absorbability, and further, the surface of the base fabric becomes dense, and it is possible to supply a base fabric which has a hot-melt bonding portion with good durability.
  • the ribbon in terms of the level of graphic spots it is preferable to carry out scouring at 60-135°C, more preferably 80-125°C.
  • the time for jet flow scouring is 2 minutes or more, in view of the effectiveness of improving the ribbon in terms of the level of graphic spots.
  • the rate at which the temperature is lowered is 10°C/min or less, more preferably 5°C/min or less, particularly, 2°C/min or less.
  • a rate of more than 10°C/min is not preferable since this leaves wrinkles which render the ribbon poor in practical use.
  • the tension is as low as possible because the bulkiness of the fabric is lowered by the tension.
  • the fabric is heat set with a pin tenter after drying.
  • care should be taken because the level of the wrinkles becomes low, the bulkiness is lowered, and the level of graphic spots becomes worse, if the tension is too high.
  • polyamides such as Nylon 66, Nylon 6 and Nylon 46 can be used.
  • Nylon 66 having a viscosity in sulfuric acid of more than 2.8 is particularly preferred in view of the durability of the base fabric for an ink ribbon.
  • the above fibers constitute the warp and weft.
  • the monofilament denier of this synthetic filament yarn is preferably 0.4 ⁇ 4 denier, more preferably 0.8 ⁇ 3 denier.
  • This yarn is preferably a multifilament yarn having a total denier of 5 ⁇ 100, more preferably of 5 ⁇ 70 denier, because well-balanced products, as between the thickness of the base fabric and the ink absorbability, can be manufactured.
  • the woven density of these base fabrics although a warp density of 150 ⁇ 400 yarn/inch and a weft density of 100 ⁇ 250 yarn/inch is preferably adopted, this invention is not limited to these densities. It is preferable that the filament yarn has a low twist lower than 400T/m.
  • the base fabric for an ink ribbon obtained by the jet flow scouring under the conditions specified for this invention is excellent in ink absorbability and very good having regard to the graphic spot level because the monofilament in the yarn is unfastened, compared to that obtained by ordinary scouring, and it is suitable and advantageous for use in a serial dot printer and line printer with 24 pins and 48 pins which is widely used recently.
  • the base fabric obtained as described above is made into an ink ribbon by appropriately adding conventional oil based ink, namely, an oil based ink which contains 3 wt% or more pigment and 8 wt% or more dye and has a viscosity of 650 cps (20°C) or more.
  • conventional oil based ink namely, an oil based ink which contains 3 wt% or more pigment and 8 wt% or more dye and has a viscosity of 650 cps (20°C) or more.
  • these base fabrics for an ink ribbon may be further processed according to circumstance, such as high pressure fluid treatment, plasma treatment, surface active agent treatment and resin treatment.
  • a plain weave fabric was woven with 40 denier/34 filaments of Nylon 66 which had a viscosity of 2.85 in sulfuric acid and, with 280T/M additional twist in the warp and without additional twist in the weft.
  • Comparative example 2 was carried out by a procedure in which jet flow scouring was replaced by conventional scouring.
  • these fabrics were melt-cut into 13mm width and had, applied to them 22 wt%, based on the fabrics, of an oil-based ink which contained 18% dye, 5% pigment, and had a viscosity of 1800cps at 20°C, and ink ribbons for a dot printer were thus prepared.
  • the base fabric of this invention for an ink ribbon is good in ink absorbability, has excellent properties without having graphic spots, and for those reasons, can be used as a cassette type ink ribbon among ink ribbons for various types of impact printer such as a line printer or serial type printer.
  • Ink ribbons of this invention are expected not only to be useful as ink ribbons for impact type printers, but also, especially, a big need can be expected for their use in shuttle printers or dot printers with 24 pins which can write clear characters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Treatment Of Fiber Materials (AREA)

Claims (9)

  1. Basisgewebe für ein Farbband aus Polyamid-Multifilament, dadurch gekennzeichnet, daß das Gewebe Fältchen der Klasse 3 oder höher (wie durch den Knitterwert gemäß JIS L1096 definiert) besitzt.
  2. Basisgewebe nach Anspruch 1, worin der Knitterwert der Klasse 2-3 entspricht.
  3. Basisgewebe nach Anspruch 1 oder 2, worin die Fältchen auch in Längsrichtung ausgerichtete Fältchen umfassen.
  4. Farbbandkassette, in der sich ein Basisgewebe nach einem der Ansprüche 1 bis 3 befindet.
  5. Verfahren zur Herstellung eines Basisgewebes für ein Farbband, wobei das Verfahren das Schrubben, Trocknen und Thermofixieren eines Basisgewebes aus Polyamid-Multifilament umfaßt, dadurch gekennzeichnet, daß das Schrubben ein Düsenstrahlschrubbvorgang ist und das Thermofixieren unter einer solchen Spannung erfolgt, daß Fältchen der Klasse 3 oder höher gebildet werden.
  6. Verfahren nach Anspruch 5, worin das Düsenstrahlschrubben mit heißem Wasser mit 60-135°C durchgeführt wird und die Temperatur mit einer Rate von 10°C/min oder weniger gesenkt wird.
  7. Verfahren nach Anspruch 5 oder 6, worin das Düsenstrahlschrubben mit heißem Wasser mit 80-125°C erfolgt.
  8. Verfahren nach einem der Ansprüche 5 bis 7, worin im Anschluß an das Düsenstrahlschrubben das Gewebe bei einer Temperatur von 100°C oder mehr spannungsfrei getrocknet wird.
  9. Verfahren nach einem der Ansprüche 5 bis 8, worin das Basisgewebe eine Leinwand-, Satin-, Köper- oder eine demgegenüber modifizierte Bindung aufweist.
EP93924798A 1993-11-10 1993-11-10 Grundgewebe für schreibband und herstellungsverfahren Expired - Lifetime EP0679526B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CA002152674A CA2152674A1 (en) 1993-11-10 1993-11-10 Ink ribbon base fabric and production method thereof
PCT/JP1993/001633 WO1995013193A1 (fr) 1993-11-10 1993-11-10 Textile de base de ruban encreur et son procede de realisation

Publications (3)

Publication Number Publication Date
EP0679526A1 EP0679526A1 (de) 1995-11-02
EP0679526A4 EP0679526A4 (de) 1996-02-28
EP0679526B1 true EP0679526B1 (de) 1998-08-12

Family

ID=25678051

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93924798A Expired - Lifetime EP0679526B1 (de) 1993-11-10 1993-11-10 Grundgewebe für schreibband und herstellungsverfahren

Country Status (5)

Country Link
EP (1) EP0679526B1 (de)
CA (1) CA2152674A1 (de)
DE (1) DE69320369T2 (de)
ES (1) ES2122046T3 (de)
WO (1) WO1995013193A1 (de)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101249762B (zh) * 2007-02-24 2013-03-06 珠海天威飞马打印耗材有限公司 针式打印机用尼龙带染墨方法

Family Cites Families (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59127789A (ja) * 1983-01-11 1984-07-23 Toyobo Co Ltd インクリボン
JPS61104882A (ja) * 1984-10-29 1986-05-23 Toyobo Co Ltd 印字鮮明性に優れた耐熱性インクリボン
JPH07106668B2 (ja) * 1989-06-30 1995-11-15 東レ株式会社 インクリボン用基布
JP2902001B2 (ja) * 1989-08-14 1999-06-07 北村 篤識 インクリボン
JPH0737167B2 (ja) * 1990-03-29 1995-04-26 東レ株式会社 インパクトプリンタのインクリボン用基布およびその製造方法
JPH0764108B2 (ja) * 1991-07-09 1995-07-12 東レ株式会社 インクリボン用織物
JP2910522B2 (ja) * 1992-09-01 1999-06-23 東レ株式会社 インクリボン基布およびその製造方法

Also Published As

Publication number Publication date
CA2152674A1 (en) 1995-05-18
ES2122046T3 (es) 1998-12-16
EP0679526A4 (de) 1996-02-28
WO1995013193A1 (fr) 1995-05-18
EP0679526A1 (de) 1995-11-02
DE69320369D1 (de) 1998-09-17
DE69320369T2 (de) 1999-02-04

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