EP0047814A1 - Support pour enregistrement par électroérosion - Google Patents

Support pour enregistrement par électroérosion Download PDF

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Publication number
EP0047814A1
EP0047814A1 EP81104339A EP81104339A EP0047814A1 EP 0047814 A1 EP0047814 A1 EP 0047814A1 EP 81104339 A EP81104339 A EP 81104339A EP 81104339 A EP81104339 A EP 81104339A EP 0047814 A1 EP0047814 A1 EP 0047814A1
Authority
EP
European Patent Office
Prior art keywords
lacquer
weight
pigments
layer
fine
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
EP81104339A
Other languages
German (de)
English (en)
Other versions
EP0047814B1 (fr
Inventor
Dietrich Jürgen Dr. Bahr
Marian Briska
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.)
IBM Deutschland GmbH
International Business Machines Corp
Original Assignee
IBM Deutschland GmbH
International Business Machines Corp
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 IBM Deutschland GmbH, International Business Machines Corp filed Critical IBM Deutschland GmbH
Publication of EP0047814A1 publication Critical patent/EP0047814A1/fr
Application granted granted Critical
Publication of EP0047814B1 publication Critical patent/EP0047814B1/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
    • B41M5/24—Ablative recording, e.g. by burning marks; Spark recording
    • B41M5/245—Electroerosion or spark recording

Definitions

  • the invention relates to a recording medium for electroerosion printers with a carrier material, an overlying pigmented lacquer layer and a thin metal layer applied thereon, consisting of aluminum or containing aluminum as the main component, and a method for producing such a recording medium.
  • the traces of grinding can be reduced by using metal soaps or modified metal soaps in accordance with the above-mentioned German patent applications.
  • the quality of the polymer used for the lacquer also plays an important role here, but even the hardest and toughest polymer will always show rather strong traces of abrasion when filled with soft pigments.
  • the reason for this lies in the sharp surface contour of the outstanding pigments and the destruction of the pigments by the electrodes and the high surface pressure caused by the electrodes due to the shape of the pigments.
  • the electrode covers only a few pigment grains, which are also covered with a rather thick layer of lacquer and are therefore protected.
  • the surface pressure of the electrodes is also high here, but the contour of the outstanding pigments shows a gentle ripple.
  • the polymer is therefore subject to very high stress at the few points of contact. Since this ripple has a very low frequency, the mattness is also very low.
  • the arrangement is preferably such that the lacquer layer consists of two layers lying one on top of the other, so that the first layer lying over the carrier material consists of a lacquer highly filled with soft pigments, the grain size of the pigments being chosen so that the surface has a roughness of more than about 5 j has micrometers and that the second layer of a low-filled paint consists of only fine, soft pigments with a grain size of less than 1 to about 2 microns to j contains.
  • the lacquer layer consists of two layers lying one above the other, that the first layer lying over the carrier material consists of a lacquer highly filled with soft pigments, the grain size of the pigments being chosen so that the Surface has a roughness of more than about 5 microns and that the second layer consists of a lacquer that contains a soluble dye instead of the pigments. It is particularly advantageous if the first and second lacquer layers are based on the same polymer.
  • Such a recording medium can be produced according to the invention in such a way that the first lacquer layer consists of an 8% to 12% solution of a high molecular weight cellulose acetate butyrate in ethyl acetate, which also contains 15 to 20% by weight CaCO 3 with a grain size of 10 ⁇ m to 15 ⁇ m, 2 to 3% by weight of fine or coarse-grained carbon black and 2% by weight of plasticizer and that the second lacquer layer consists of an 8% to 12% solution of a high molecular weight cellulose acetobutyrate in ethyl acetate, which also contains 0 to 1% by weight CaC0 3 with a grain size of at most 1 / ⁇ m to 2 / ⁇ m, 2 to 3% by weight of fine carbon black with a grain size of at most 1 ⁇ m to 2 ⁇ m and 2% by weight of plasticizer or that the second lacquer instead of 2 to 3 % By weight of fine-grained carbon black contains an equivalent amount of
  • a first polymeric lacquer layer which is highly filled with pigments and contains only soft pigments with a grain size of more than 5 ⁇ m is applied to the carrier material and that a further polymer lacquer layer is applied over it, which is either only fine , contains soft pigments with a grain size of less than 1 ⁇ m to about 2 ⁇ m or a soluble dye.
  • a base material such as. B. paper 1 applied a first lacquer layer 2.
  • This varnish contains only soft pigments, which consequently cause only slight electrode wear.
  • the grain size of these pigments is chosen so that a roughness, ie a distance between the highest mountains and the deepest valleys of more than about 5 .mu.m is formed on the surface of the lacquer layer and thus also on the surface of the aluminum layer 4 above.
  • this varnish is so highly filled that it has an extremely low gloss level of less than 5%. After coating with an aluminum layer, this varnish would look very gray and would also chalk very strongly.
  • a writing electrode 5 is indicated.
  • a second lacquer layer 6 is arranged above the first lacquer layer 2.
  • This lacquer layer 6 contains only fine and soft pigments 7 with a diameter of less than 1 / um to about 2 / um.
  • This lacquer layer 6 has a very low filling. Although in exceptional cases it may be that different polymers are used for the lacquer layers 2 and 6 if they are compatible with one another, the same polymer will usually be used for both lacquer layers.
  • This second lacquer layer 6 achieves a very smooth, rounded waviness of high frequency, which is superimposed with a micro-roughness of the fine pigments in the second lacquer layer 6.
  • the pigment grains 7 lying in the vicinity of the surface are, as is shown purely schematically, coated with a stable lacquer layer, ie there is no more chalking here.
  • Paint 1 A high molecular weight cellulose acetate butyrate (Celite BF 900) in an 8% strength solution in ethyl acetate is / um mixed with 15% by weight CaCO 3 with a grain size 10-15 to strength than about 20% fraction.. In addition, -2% by weight of carbon black in fine or coarse grain and 2% plasticizer are added.
  • Lacquer 2 For the second layer of lacquer, the same high-molecular cellulose acetobutyrate (Cellit BF 900) is used in an 8% solution in ethyl acetate with the addition of 2% by weight carbon black with a grain size of at most 1 ⁇ m to 2 ⁇ m or instead with addition a soluble color without pigment, and 2% by weight plasticizer.
  • Lacquer 1 A high molecular weight cellulose acetobutyrate (Cellit BL 700) is prepared in a 12% solution in ethyl acetate and mixed with 20% by weight CaCO 3 with a grain size of approximately 10 ⁇ m to 15 ⁇ m as an approximately 20% fraction. In addition, 3% by weight of carbon black in fine or coarse grain and 2% by weight of plasticizer are added.
  • Lacquer 2 high molecular weight cellulose acetobutyrate (Cellit BL 700) is mixed in a 12% solution in ethyl acetate with 1% by weight CaC0 3 with a grain size of at most 1 ⁇ m to 2 ⁇ m, with 3% by weight of carbon black with a grain size of 1 ⁇ m to 2 / ⁇ m, or instead with a soluble color without pigments and with 2% by weight plasticizer.
  • lacquer compositions can be used for the first and second lacquer layers can already achieve excellent results, especially if an adhesion promoter is used between the substrate and the lacquer layer.
  • the lacquers mentioned there which are soot-compatible and have a high pigment absorption, are produced by processing two differently melting polymers, for example a solvent-free cellulose acetate and a high-polymer, solvent-free ethylene-vinyl acetate copolymer, with these two components being processed into a copolymer in a kneader at about the average softening temperature will.
  • This lacquer which can be produced, for example, from powdery or granular cellulose acetate or granular or powdery polyvinyl acetate or else granular or powdery ethylene-vinyl acetate copolymer, is likely in connection with the new recording medium, i. H. lead to even better results when used for the two layers of paint.
  • the present invention actually gives a lacquer surface and thus a surface of a recording medium that is vapor-coated or coated with a very thin aluminum layer, which more than meets all the requirements set out at the beginning. It was found that this new lacquer surface has a high frequency of ripple, a soft, rounded ripple, a high mechanical strength and toughness due to thick polymer layers on the pigment grains and a high mattness. In addition, a significantly lower graying was found, the electrode wear could be kept low; in addition, an exceptionally good adhesion of the vapor-deposited aluminum layer has been found. In addition, there was also a lower surface pressure on the electrodes and less stress on the coating polymer.

Landscapes

  • Paints Or Removers (AREA)
EP81104339A 1980-08-28 1981-06-05 Support pour enregistrement par électroérosion Expired EP0047814B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19803032427 DE3032427A1 (de) 1980-08-28 1980-08-28 Aufzeichnungstraeger fuer elektroerosionsdrucker und verfahren zu dessen herstellung
DE3032427 1980-08-28

Publications (2)

Publication Number Publication Date
EP0047814A1 true EP0047814A1 (fr) 1982-03-24
EP0047814B1 EP0047814B1 (fr) 1986-11-12

Family

ID=6110591

Family Applications (1)

Application Number Title Priority Date Filing Date
EP81104339A Expired EP0047814B1 (fr) 1980-08-28 1981-06-05 Support pour enregistrement par électroérosion

Country Status (4)

Country Link
EP (1) EP0047814B1 (fr)
JP (1) JPS5749596A (fr)
CA (1) CA1172114A (fr)
DE (2) DE3032427A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047361A2 (fr) * 1980-09-03 1982-03-17 Ibm Deutschland Gmbh Support pour enregistrement par électroérosion

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5985789A (ja) * 1982-11-09 1984-05-17 Sadami Ito 放電記録シ−ト
JPS5985790A (ja) * 1982-11-09 1984-05-17 Sadami Ito 放電記録シ−ト
JPS5995193A (ja) * 1982-11-22 1984-06-01 Sadami Ito 放電記録シ−ト
JPS5995192A (ja) * 1982-11-22 1984-06-01 Sadami Ito 放電記録シ−ト
JPS5998894A (ja) * 1982-11-29 1984-06-07 Sadami Ito 放電記録シ−ト
JPS5998895A (ja) * 1982-11-29 1984-06-07 Sadami Ito 放電記録シ−ト
GB8301503D0 (en) * 1983-01-20 1983-02-23 Unilever Plc Particulate detergent composition
ATE28149T1 (de) * 1983-04-21 1987-07-15 Ibm Verfahren zum erzeugen einer metallseifenschicht als gleitschicht auf einem metallisierten aufzeichnungstraeger.

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2089875A5 (fr) * 1970-05-02 1972-01-07 Bosch
DE2203861A1 (fr) * 1971-01-30 1972-08-17
GB1325033A (en) * 1971-11-26 1973-08-01 Mason Ltd Nig Electrosensitive recording materials
DE2747485A1 (de) * 1977-10-22 1979-04-26 Bosch Gmbh Robert Aufzeichnungstraeger fuer registriergeraete

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2089875A5 (fr) * 1970-05-02 1972-01-07 Bosch
DE2203861A1 (fr) * 1971-01-30 1972-08-17
GB1325033A (en) * 1971-11-26 1973-08-01 Mason Ltd Nig Electrosensitive recording materials
DE2747485A1 (de) * 1977-10-22 1979-04-26 Bosch Gmbh Robert Aufzeichnungstraeger fuer registriergeraete

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0047361A2 (fr) * 1980-09-03 1982-03-17 Ibm Deutschland Gmbh Support pour enregistrement par électroérosion
EP0047361B1 (fr) * 1980-09-03 1985-09-11 Ibm Deutschland Gmbh Support pour enregistrement par électroérosion

Also Published As

Publication number Publication date
EP0047814B1 (fr) 1986-11-12
JPS5749596A (en) 1982-03-23
DE3032427A1 (de) 1982-04-01
DE3175593D1 (en) 1987-01-02
CA1172114A (fr) 1984-08-07

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