EP0090907B1 - Ruban encreur permettant une écriture à surcharge par chevauchement - Google Patents

Ruban encreur permettant une écriture à surcharge par chevauchement Download PDF

Info

Publication number
EP0090907B1
EP0090907B1 EP83100124A EP83100124A EP0090907B1 EP 0090907 B1 EP0090907 B1 EP 0090907B1 EP 83100124 A EP83100124 A EP 83100124A EP 83100124 A EP83100124 A EP 83100124A EP 0090907 B1 EP0090907 B1 EP 0090907B1
Authority
EP
European Patent Office
Prior art keywords
fatty acid
acid ester
typewriter
color
printer ribbon
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
Application number
EP83100124A
Other languages
German (de)
English (en)
Other versions
EP0090907A1 (fr
Inventor
Ulrich Kohle
Hans Paffhausen
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.)
Pelikan Produktions AG
Original Assignee
Pelikan GmbH
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 GmbH filed Critical Pelikan GmbH
Priority to AT83100124T priority Critical patent/ATE16368T1/de
Publication of EP0090907A1 publication Critical patent/EP0090907A1/fr
Application granted granted Critical
Publication of EP0090907B1 publication Critical patent/EP0090907B1/fr
Expired legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M5/00—Duplicating or marking methods; Sheet materials for use therein
    • B41M5/10—Duplicating or marking methods; Sheet materials for use therein by using carbon paper or the like
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/914—Transfer or decalcomania

Definitions

  • the invention relates to an overlapping rewritable ink ribbon consisting of a carrier film and an ink-releasing coating applied thereon in the form of a plastic matrix with a carbon black and / or color pigment dispersed therein, a fat dye and fine-particle fillers with a large inner surface containing paste based on a fatty acid ester a polyhydric alcohol.
  • Such an ink ribbon is known from US-A-3682683.
  • overlap overwrite means that the tape transport, which is usually slightly more than one type width, per stop on e.g. 1/3 or 1/5 of the type width is shortened, so that each type stop only hits a fresh area of the ribbon with a small proportion of the area, while the larger area proportion of the type stop lies on an area of the ribbon that has already been struck once or several times.
  • Such an ink ribbon which is also referred to in technical terms as an “overstrike ribbon" only needs to be transported in one direction like a single-use ribbon and is nevertheless used several times (e.g. 3.3 times or 5 times). Compared to those rewritable ink ribbons that are fed forward and backward (with a full transport step of approximately one type width per stroke), this saves the time-consuming and fault-prone switching mechanism for the tape running direction.
  • the overstrike tapes normally consist of a thin carrier film to which an ink-releasing coating in the form of a matrix of a plastic binder and a color paste dispersed therein is applied.
  • the color paste consists of e.g. in the form of a fatty acid ester of a polyhydric alcohol with the plastic of the matrix largely incompatible oil and color pigments.
  • a solution of the binder is applied to the carrier film using a solvent which also serves as a solubilizer for the oil.
  • the oil then separates into numerous, ideally communicating, microdroplets in the solidifying matrix.
  • the color-releasing coating of these ribbons can be viewed as a «sponge layer» applied to the carrier film and filled with the color paste, from which part of the color paste is pressed out at each type stop and forms the typeface on the paper behind it.
  • overstrike tapes An important requirement for overstrike tapes is that the same amount of color paste emerges from the ink-releasing coating at every point on the tape at each type stop. There must be no drop in color intensity between the first and the last overwriting, otherwise a spotted typeface would result. On the other hand, after the last overwriting, the yield of the ribbon can and should drop steeply, because the relevant ribbon point is not used again and does not need to give up any more color.
  • overstrike tapes in which oils such as castor oil, claw oil, peanut oil, glycerol triolein or corresponding natural or synthetic oils or generally fatty acid esters of polyhydric alcohols are used for the color paste, meet these requirements up to a 5-fold overstrike from good to satisfactory.
  • an even higher overstrike i.e. a reduction in tape transport to less than 1/5 of the type width
  • the known tapes no longer write out properly when the overstrike is higher, but instead result in a spotty font that is particularly noticeable in the underline.
  • fat dye an oil-soluble dye
  • the invention is therefore based on the object of developing the ink ribbon described at the outset in such a way that it permits a more than 10-fold overstrike with a uniform deep black and sharp-edged font intensity even in typewriter printers with a high stroke speed.
  • the fatty acid ester is a polyethoxylated fatty acid ester of a polyhydric alcohol and the finely divided fillers have a particle size distribution of 0.2 to 20 micrometers.
  • the invention is based on the completely surprising finding that the above special fatty acid ester has an unexpectedly high dissolving power for fatty dyes, which increases with an increasing number of ethoxy groups.
  • a solvent can absorb 50% fat dyes.
  • the polyethoxylated fatty acid esters according to the invention are also sufficiently incompatible with the binder of the color-releasing coating in order to form the required sponge layer in the production of the tapes. This property was also unpredictable. Normally, the introduction of ethoxy groups into the molecule increases the compatibility of the oils with plastic binders so much that the formation of a sponge layer becomes impossible, i.e. no color-releasing coating can be produced at all with these compounds.
  • those fatty acid esters which are derived from fatty acids with 12 to 25 C atoms and from alcohols with 3 to 6 OH groups and which contain 20 to 60 ethoxy groups per molecule have proven to be particularly suitable.
  • a typical and preferred example is polyoxyethylene (40) sorbitol pentaoleate, polyoxyethylene glycerol triricinolate and corresponding compounds of other fatty acids with an average of about 40 ethoxy groups.
  • oils-soluble dyes such as Sudan deep black or fat black HB, are suitable as fat dyes.
  • other colors or fluorescent characters can also be created by using appropriate oil-soluble dyes.
  • the color-releasing coating also contains an addition of finely divided fillers, for example diatomaceous earth, activated carbon or burst hollow spheres with a larger inner surface accessible to the color paste.
  • these fillers hold the (most) part of the color paste that has penetrated their pores very firmly, so that when you first overwrite it, only as much color paste is freely available as is required to form a clear type impression.
  • the fillers are also partially shattered by the stroke of the writing type, so that part of the supply of color paste originally held in the pores of the fillers is released and pressed out during the subsequent overwriting can. This process is repeated for each subsequent overwrite.
  • the fillers have the further advantage that, because most of the fatty acid ester is embedded in their pores in the color-releasing coating, there is so little free fatty acid ester that the high affinity of the binder for the carrier film is sufficient to anchor the color-releasing layer on the carrier film. This means that the previously required insertion of an adhesion-promoting intermediate layer is no longer absolutely necessary.
  • cationic wetting agents are fatty amine salts, ie the salts of long-chain, natural or Synthetic fatty acids obtained alkylamines or diamines, in particular with long-chain or short-chain fatty acids.
  • the invention thus creates a color-releasing coating in which the color paste, in addition to its content of color pigments, is also colored in an extremely high concentration with a fatty dye, that is to say it has an extremely high color strength and can therefore be kept sufficiently thin-layered.
  • the color paste is dispensed with the desired constant intensity each time it is overwritten, and it is so strong in color that striking fluctuations in the type stop are not noticeable in the intensity of the print.
  • the polyethoxylated fatty acid esters mentioned in the first place can also be replaced in whole or in part by conventional oils, such as castor oil, glycerol triolein or possibly also mineral oil.
  • the binders in the system according to the invention can be the plastic binders customary for color ribbons, such as polyacrylates, polyvinyl chloride / acetate copolymers, linear polyesters, polyvinyl acetate and polystyrene, polyamide.
  • the solvents or solvent mixtures customary in ribbon production such as e.g. Methyl ethyl ketone, toluene and isopropyl alcohol.
  • the solvent is partly introduced into the system in the form of, for example, a 25% solution of the binder. After the coating has dried, the solvent is no longer contained in the finished product.
  • the proportions of the individual components vary depending on the specific substances used, their optimal values can be easily determined by simple manual tests.
  • the coating mixture is applied and dried in accordance with the framework recipe described on a carrier film made of conventional polymers such as polyester, polyethylene, polypropylene or polyamide. Since the total thickness of the finished tape (in the interest of the longest possible tape length per cassette) should not exceed 26 11m, the carrier film is kept as thin as possible and has a layer thickness of 8 ⁇ m, for example. If necessary, the use of an antistatic intermediate layer with a thickness of approximately 2 11 m is possible.
  • PSSO fatty acid ester to be used according to the invention with an average of 40 ethoxy groups per molecule
  • an ink-releasing coating of approximately 16 / lm thickness was produced on an 8 / lm thick polyester film.
  • the ribbons obtained in this way gave a uniform, sharp-edged typeface, even in a high-speed typewriter printer, in a 12-fold overstrike, especially when the type stroke was extremely strong.

Landscapes

  • Impression-Transfer Materials And Handling Thereof (AREA)
  • Duplication Or Marking (AREA)
  • Photographic Developing Apparatuses (AREA)
  • Audible-Bandwidth Dynamoelectric Transducers Other Than Pickups (AREA)
  • Thermal Transfer Or Thermal Recording In General (AREA)
  • Hydrogenated Pyridines (AREA)
  • Accessory Devices And Overall Control Thereof (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Adhesive Tapes (AREA)
  • Decoration By Transfer Pictures (AREA)

Claims (6)

1. Ruban encreur permettant une écriture à surcharge par chevauchement, se composant d'une feuille de support et d'un revêtement d'émission d'encre, prévu sur la feuille de support, revêtement sous la forme d'une matrice de matière synthétique, dans laquelle sont dispersés des pigments de noir de fumée et/ou de couleur, d'une matière pinctorale grasse, ainsi que de charges en particules fines, ayant une grande surface interne, et contenant une pâte à base d'un ester d'acide gras, d'un polyalcool, caractérisé en ce que l'ester d'acide gras est un ester d'acide gras polyéthoxylé d'un polyalcool et les charges en particules fines ont une répartition de dimension de particules comprise entre 0,2 et 20 microns.
2. Ruban encreur selon la revendication 1, caractérisé en ce que l'ester d'acide gras polyéthoxylé est un ester d'acides gras comportant entre 12 et 24 atomes C et les alcools entre 3 et 6 groupes OH, avec 20 à 60 groupes éthoxy, dans la molécule.
3. Ruban encreur selon la revendication 2, caractérisé en ce que l'ester d'acide gras est un po- lyoxyéthylène (40)-sorbitopentaoléate.
4. Ruban encreur selon' l'une des revendications 1 à 3, caractérisé en ce que la charge est sous la forme de Kieselguhr d'acide silicique précipité, de charbon actif et/ou de bille creuse éclatée.
5. Ruban encreur selon l'une des revendications 1 à 4, caractérisé en ce que l'ester d'acide gras polyéthoxyléestcoupé jusqu'à 50% avec une huile naturelle ou synthétique.
6. Ruban encreur selon l'une des revendications 1 à 5, caractérisé en ce que le revêtement émetteur d'encre contient en outre un agent mouillant cationique.
EP83100124A 1982-04-07 1983-01-08 Ruban encreur permettant une écriture à surcharge par chevauchement Expired EP0090907B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT83100124T ATE16368T1 (de) 1982-04-07 1983-01-08 Ueberlappend ueberschreibbares farbband.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH2165/82 1982-04-07
CH216582 1982-04-07

Publications (2)

Publication Number Publication Date
EP0090907A1 EP0090907A1 (fr) 1983-10-12
EP0090907B1 true EP0090907B1 (fr) 1985-11-06

Family

ID=4227397

Family Applications (1)

Application Number Title Priority Date Filing Date
EP83100124A Expired EP0090907B1 (fr) 1982-04-07 1983-01-08 Ruban encreur permettant une écriture à surcharge par chevauchement

Country Status (11)

Country Link
US (1) US4544292A (fr)
EP (1) EP0090907B1 (fr)
JP (1) JPS5935969A (fr)
AT (1) ATE16368T1 (fr)
AU (1) AU549464B2 (fr)
CA (1) CA1193782A (fr)
DE (2) DE3361130D1 (fr)
FR (1) FR2524845A1 (fr)
GB (1) GB2118584B (fr)
IT (1) IT1161810B (fr)
NL (1) NL8300794A (fr)

Families Citing this family (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3409936C1 (de) * 1984-03-17 1985-12-05 Pelikan Ag, 3000 Hannover Farbband
US4585692A (en) * 1984-06-15 1986-04-29 International Business Machines Corp. Aliphatic polyurethane matrix transfer medium and porous magnesium silicate filler
US4624881A (en) * 1984-07-13 1986-11-25 Fuji Kagakushi Kogyo Co., Ltd. Multiple-use pressure-sensitive transfer recording media
JPH07396B2 (ja) * 1985-04-25 1995-01-11 沖電気工業株式会社 インクリボン
EP0208000B1 (fr) * 1985-06-24 1989-10-11 Ibm Deutschland Gmbh Ruban encreur pour l'impression sur céramique
JPH0729483B2 (ja) * 1985-06-27 1995-04-05 沖電気工業株式会社 インパクトプリンタ用インキリボン
JPH07421B1 (fr) * 1985-12-17 1995-01-11
DE3635112A1 (de) * 1986-10-15 1988-05-05 Caribonum Ltd Ueberlappend ueberschreibbares farbband fuer nadeldrucksysteme sowie ein verfahren zu dessen herstellung
DE3635114C1 (de) * 1986-10-15 1988-07-14 Caribonum Ltd UEberlappend ueberschreibbares Farbband sowie seine Verwendung in endlos gestopften Kassetten
US4803119A (en) * 1987-06-01 1989-02-07 Xerox Corporation Ink compositions for impact typewriter ribbons
US5072234A (en) * 1989-12-21 1991-12-10 Xerox Corporation Thermal transfer printing elements with mesomorphic inks
US5045865A (en) * 1989-12-21 1991-09-03 Xerox Corporation Magnetically and electrostatically assisted thermal transfer printing processes
JP2013053476A (ja) 2011-09-05 2013-03-21 Sharp Corp 照明機能付き手摺り
JP6083641B2 (ja) * 2013-01-11 2017-02-22 フジコピアン株式会社 インパクトプリンタ用インクリボン

Family Cites Families (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3049457A (en) * 1958-06-05 1962-08-14 Carter S Ink Co Transfer paper
US2984582A (en) * 1959-12-22 1961-05-16 Columbia Ribbon & Carbon Pressure sensitive ink releasing transfer sheet and process of making same
FR1257512A (fr) * 1960-05-23 1961-03-31 Kores Mfg Company Ltd Perfectionnements aux feuilles et rubans de transfert ou analogues
GB1003302A (en) * 1960-12-20 1965-09-02 Pairotto Man Nen Hitsu Kabushi Improvements in or relating to pressure-sensitive copying material
GB958081A (en) * 1962-02-07 1964-05-13 Ici Ltd Pressure operative transfer sheets containing treated pigments
US3306867A (en) * 1964-02-12 1967-02-28 Kores Mfg Company Ltd Transfer media comprising resin, carrier fluid and quaternary ammonium compound
US3392042A (en) * 1965-01-25 1968-07-09 Ibm Spongeous typewriter ribbon
US3348651A (en) * 1965-04-13 1967-10-24 Reeves Bros Inc Microporous typewriter ribbons
US3463697A (en) * 1966-02-23 1969-08-26 Ibm Reusable transfer medium with print characteristics comparable to filled ink
US3520495A (en) * 1966-10-29 1970-07-14 Tadashi Sotani Tape cartridge and driving mechanism for the tape
GB1224819A (en) * 1967-11-30 1971-03-10 Ibm Method for preparing pressure sensitive transfer media
US3864181A (en) * 1972-06-05 1975-02-04 Pratt & Lambert Inc Polymer foam compositions
DE2232773C3 (de) * 1972-07-04 1975-07-17 Triumph Werke Nuernberg Ag, 8500 Nuernberg Bremsvorrichtung für eine Farbbandspule
DE2418066C2 (de) * 1974-04-13 1986-12-04 Karl Finke Ohg, 5600 Wuppertal Verfahren zur Herstellung von Farbpasten oder -dispersionen
US3908063A (en) * 1974-09-27 1975-09-23 Monarch Marking Systems Inc Novel transfer elements from porous alkenyl aromatic films
DE2534845A1 (de) * 1975-08-05 1977-02-10 Schering Ag Druckverfahren und dafuer geeignete schmelzdruckfarben
US4150187A (en) * 1975-09-02 1979-04-17 Columbia Ribbon And Carbon Manufacturing Co., Inc. Transfer elements and process
CH590784A5 (en) * 1975-10-07 1977-08-31 Siemens Ag Albis Coiling unit for strip material esp. data carrier - has strip moving between concave surface pressure disc and second disc
US4217388A (en) * 1978-03-27 1980-08-12 Columbia Ribbon And Carbon Mfg. Co., Inc. Pressure-sensitive transfer elements and process
US4321286A (en) * 1979-07-12 1982-03-23 International Business Machines Corporation Process for producing transfer ribbons
US4299504A (en) * 1980-07-03 1981-11-10 Xerox Corporation High capacity ribbon cartridge with surface drive
DE3118980A1 (de) * 1981-05-09 1982-11-25 Pelikan Ag, 3000 Hannover Multicarbon-material zur schrifterzeugung
DE3214305C2 (de) * 1981-06-27 1984-08-02 Pelikan Ag, 3000 Hannover Überlappend überschreibbares Farbband

Also Published As

Publication number Publication date
AU549464B2 (en) 1986-01-30
DE3307432A1 (de) 1983-10-20
JPH0415108B2 (fr) 1992-03-16
GB8304360D0 (en) 1983-03-23
IT1161810B (it) 1987-03-18
FR2524845A1 (fr) 1983-10-14
DE3307432C2 (de) 1986-01-02
DE3361130D1 (en) 1985-12-12
CA1193782A (fr) 1985-09-17
GB2118584A (en) 1983-11-02
IT8320384A0 (it) 1983-03-30
AU1181883A (en) 1983-10-13
NL8300794A (nl) 1983-11-01
GB2118584B (en) 1985-08-29
EP0090907A1 (fr) 1983-10-12
US4544292A (en) 1985-10-01
ATE16368T1 (de) 1985-11-15
JPS5935969A (ja) 1984-02-27

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