EP0047360B1 - Process for the manufacture of a sliding layer on the surface of a recording substrate coated with a thin aluminium layer - Google Patents
Process for the manufacture of a sliding layer on the surface of a recording substrate coated with a thin aluminium layer Download PDFInfo
- Publication number
- EP0047360B1 EP0047360B1 EP81104333A EP81104333A EP0047360B1 EP 0047360 B1 EP0047360 B1 EP 0047360B1 EP 81104333 A EP81104333 A EP 81104333A EP 81104333 A EP81104333 A EP 81104333A EP 0047360 B1 EP0047360 B1 EP 0047360B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- layer
- saturated
- metallic soap
- sliding layer
- soap
- 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
Links
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 method for applying a sliding layer to the surface of a recording medium coated with a thin aluminum layer, in which a metal soap is applied as a sliding layer in a layer thickness of 2 to 1000 nm to the surface of the aluminum layer.
- the writing electrodes In the electrographic recording process on a film coated with an aluminum layer or on a paper coated with an aluminum layer and a lacquer layer, the writing electrodes must have direct electrical contact with the aluminum layer. Almost every recorder is designed for continuous writing, i.e. there is always a relative movement between the writing electrodes and the aluminum-coated recording medium. The electrical contact between the electrodes and the aluminum-coated recording medium must also be ensured during this relative movement, i.e. the electrodes grind on the aluminum layer, regardless of whether it is currently being written or not. This grinding leaves in the areas where the aluminum does not burn out, i.e.
- the metal soap is applied in a dry, mechanical application process and mixed before use with 10-30% by weight, based on the weight of the sliding layer, of a polyfunctional, aliphatic alcohol.
- the procedure is such that the metal soap is mixed in a mortar or in a mill with 10-30% by weight of the aliphatic alcohol to form a homogeneous, smooth mass.
- both saturated and mixtures of saturated and unsaturated metal soaps can be used.
- Al-stearate, Li-stearate, Mg-palmitate or Li-palmitate are particularly suitable as pure metal soaps.
- sodium or potassium soaps are also suitable here, e.g. their stearates and palmitates.
- Polyfunctional, aliphatic alcohols with relatively very short chains such as e.g. Glycerin or ethylene glycol.
- a purely mechanical application process has been found to be particularly effective, in which the metal soap which has been prepared according to the invention is rubbed thinly and evenly onto the aluminum surface by means of a soft cotton ball.
- the effectiveness of this soap layer increases with increasing degree of polishing.
- Such polished layers nevertheless have the mattness of an untreated recording medium. It has been shown that recording media coated in this way show practically no more scratches and scratches.
Landscapes
- Lubricants (AREA)
- Electronic Switches (AREA)
- Electrophotography Using Other Than Carlson'S Method (AREA)
- Duplication Or Marking (AREA)
- Manufacturing Of Magnetic Record Carriers (AREA)
- Paints Or Removers (AREA)
Description
Die Erfindung betrifft ein Verfahren zum Aufbringen einer Gleitschicht auf die Oberfläche eines mit einer dünnen Aluminiumschicht überzogenen Aufzeichnungsträgers, bei dem als Gleitschicht eine Metallseife in einer Schichtdikke von 2 bis 1000 nm auf die Oberfläche der Aluminiumschicht aufgebracht wird.The invention relates to a method for applying a sliding layer to the surface of a recording medium coated with a thin aluminum layer, in which a metal soap is applied as a sliding layer in a layer thickness of 2 to 1000 nm to the surface of the aluminum layer.
Beim elektrographischen Aufzeichnungsvorgang auf einer mit einer Aluminiumschicht überzogenen Folie oder auf einem mit einer Aluminiumschicht und einer Lackschicht überzogenen Papier müssen die Schreibelektroden unmittelbar einen elektrischen Kontakt mit der Aluminiumschicht haben. Nahezu jedes Aufzeichnungsgerät ist für einen kontinuierlichen Schreibvorgang entworfen, d.h. es findet immer eine Relativbewegung zwischen den Schreibelektroden und dem mit Aluminium beschichteten Aufzeichnungsträger statt. Auch während dieser Relativbewegung muss der elektrische Kontakt zwischen den Elektroden und dem mit Aluminium beschichteten Aufzeichnungsträger gewährleistet sein, d.h. die Elektroden schleifen auf der Aluminiumschicht, unabhängig davon, ob gerade geschrieben wird oder nicht. Dieses Schleifen hinterlässt in den Bereichen, in denen das Aluminium nicht ausgebrannt, d.h. verdampft ist, Schleif- oder Kratzspuren, deren Stärke und Eigenart einmal von der Rauhigkeitsstruktur und den verwendeten Materialien bei der Herstellung des Aufzeichnungsträgers, zum anderen von der Grösse und Anordnung der einzelnen Elektroden abhängen. Insbesondere bei sehr dünnen Elektroden für die qualitativ hochwertigen Aufzeichnungen ergeben sich wegen der relativ hohen Flächenpressung starke Spuren, die im günstigsten Fall nur optisch unschön sind, im ungünstigsten Fall aber eine Wiedergabe oder Reproduktion des beschriebenen Aufzeichnungsträgers, beispielsweise durch Kopieren erheblich erschweren, wenn nicht gar unmöglich machen.In the electrographic recording process on a film coated with an aluminum layer or on a paper coated with an aluminum layer and a lacquer layer, the writing electrodes must have direct electrical contact with the aluminum layer. Almost every recorder is designed for continuous writing, i.e. there is always a relative movement between the writing electrodes and the aluminum-coated recording medium. The electrical contact between the electrodes and the aluminum-coated recording medium must also be ensured during this relative movement, i.e. the electrodes grind on the aluminum layer, regardless of whether it is currently being written or not. This grinding leaves in the areas where the aluminum does not burn out, i.e. is evaporated, traces of grinding or scratching, the strength and nature of which depend on the roughness structure and the materials used in the production of the recording medium, and on the size and arrangement of the individual electrodes. Particularly in the case of very thin electrodes for high-quality recordings, there are strong traces due to the relatively high surface pressure, which in the best case are only optically unsightly, but in the worst case make reproduction or reproduction of the described recording medium, for example by copying, considerably more difficult, if not impossible to make impossible.
Aus der DE-C-849609 sind Aufzeichnungsträger mit einem aufgedampften Metallbelag bekannt, die mit Schutzschichten aus chemisch beständigen Verbindungen des Belagmetalls, z.B. Oxiden oder Carbonaten, aus Quarz oder Paraffin, oder insbesondere aus Ölen versehen sind. Es ist bekannt, dass Schichten aus den zuvor beschriebenen Materialien Schleif- und Kratzspuren auf dem Metallbelag mehr oder weniger reduzieren können.From DE-C-849609 recording media with a vapor-deposited metal coating are known, which are coated with protective layers of chemically resistant compounds of the coating metal, e.g. Oxides or carbonates, made of quartz or paraffin, or in particular oils. It is known that layers made of the materials described above can more or less reduce traces of grinding and scratching on the metal covering.
Die in der EP-A-36469, welche aufgrund des Artikels 54(3) und (4) EPÜ zum Stand der Technik gehört, vorgeschlagene Beschichtung mit einer 2 bis 1000 nm dicken Schicht einer Metallseife hat sich bereits als recht gute Lösung für das Problem der Beseitigung von Schleif- und Kratzspuren erwiesen. Derartige Metallseifenschichten kann man beispielsweise mit Tauch-, Spritz-, Aufdampf- oder Sputterverfahren oder auch rein mechanisch aufbringen.The coating proposed in EP-A-36469, which belongs to the prior art due to Article 54 (3) and (4) EPC, with a 2 to 1000 nm thick layer of metal soap has already proven to be a very good solution to the problem the removal of grinding and scratch marks. Metal soap layers of this type can be applied, for example, by immersion, spraying, vapor deposition or sputtering processes or else purely mechanically.
Bei Experimenten mit gesättigten, reinen Metallseifen, wie z.B. AI-Stearat, Li-Stearat, Mg-Palmitat oder Li-Palmitat hat sich jedoch herausgestellt, dass diese beim trockenen, mechanischen Auftrag eine zu hohe Härte und schlechte Haftung auf dem Aluminium aufweisen. Des weiteren war eine Beschädigung der Aluminiumschicht des Aufzeichnungsträgers nicht völlig auszuschliessen. Insbesondere wird beim trockenen, mechanischen Auftragen solcher reiner Metallseifen das Aluminium angeschliffen, so dass sich eine unterschiedlich hohe Vergrauung des Aufzeichnungsträgers ergibt. Die ungesättigten Seifen, wie z.B. Zn-Oleat lassen sich nach dem mechanischen Verfahren ohnehin nicht auftragen, da sie meistens eine zähflüssige und klebrige Konsistenz haben. Im Gemisch mit gesättigten Seifen können sie jedoch eine Reihe wertvoller Eigenschaften aufweisen, und zwar durch Polymerisation und Vernetzung.In experiments with saturated, pure metal soaps, e.g. Al stearate, Li stearate, Mg palmitate or Li palmitate, however, has been found to have too high hardness and poor adhesion to the aluminum when dry, mechanical application. Furthermore, damage to the aluminum layer of the recording medium could not be completely ruled out. In particular, when dry, mechanical application of such pure metal soaps, the aluminum is sanded, so that the graying of the recording medium is different. The unsaturated soaps, e.g. Zn-oleate cannot be applied by the mechanical process anyway, since they usually have a viscous and sticky consistency. However, when mixed with saturated soaps, they can have a number of valuable properties, namely through polymerization and crosslinking.
Um die obengenannten Schwierigkeiten zu überwinden, wird erfindungsgemäss vorgeschlagen, dass die Metallseife in einem trockenen, mechanischen Auftragverfahren aufgebracht wird und vor dem Aufbringen mit 10-30 Gew.%, bezogen auf das Gewicht der Gleitschicht, eines mehrfunktionellen, aliphatischen Alkohols zu vermischen. Man geht dabei so vor, dass die Metallseife in einem Mörser oder in einer Mühle mit 10-30 Gew.% des aliphatischen Alkohols zu einer homogenen geschmeidigen Masse vermischt wird. In diesem Fall können sowohl gesättigte als auch Mischungen aus gesättigten und ungesättigten Metallseifen verwendet werden. Als reine Metallseifen eignen sich hierbei insbesondere Al-Stearat, Li-Stearat, Mg-Palmitat oder Li-Palmitat. Selbstverständlich sind hier auch Natrium- oder Kaliumseifen geeignet, wie z.B. deren Stearate und Palmitate. Vorzugsweise wird man als Beimischung mehrfunktionelle, aliphatische Alkohole mit relativ sehr kurzen Ketten verwenden, wie z.B. Glycerin oder Äthylenglykol.In order to overcome the above-mentioned difficulties, it is proposed according to the invention that the metal soap is applied in a dry, mechanical application process and mixed before use with 10-30% by weight, based on the weight of the sliding layer, of a polyfunctional, aliphatic alcohol. The procedure is such that the metal soap is mixed in a mortar or in a mill with 10-30% by weight of the aliphatic alcohol to form a homogeneous, smooth mass. In this case, both saturated and mixtures of saturated and unsaturated metal soaps can be used. Al-stearate, Li-stearate, Mg-palmitate or Li-palmitate are particularly suitable as pure metal soaps. Of course, sodium or potassium soaps are also suitable here, e.g. their stearates and palmitates. Polyfunctional, aliphatic alcohols with relatively very short chains, such as e.g. Glycerin or ethylene glycol.
Höhere Beimischungen von mehr als 30 Gew.% Alkohol zeigen keine Nachteile. Einige Versuche wurden mit Alkoholzugaben von 1:0,7 durchgeführt und wurden für funktionsfähig befunden.Higher admixtures of more than 30% by weight alcohol show no disadvantages. Some tests were carried out with alcohol additions of 1: 0.7 and were found to be functional.
Als besonders wirksam hat sich ein rein mechanisches Auftragverfahren herausgestellt, bei dem die Metallseife, die erfindungsgemäss präpariert wurde, mittels eines weichen Wattebausches auf die Aluminiumoberfläche dünn und gleichmässig aufgerieben und aufpoliert wird. Mit zunehmendem Poliergrad nimmt auch die Wirksamkeit dieser Seifenschicht zu. Solche polierten Schichten haben dennoch die Mattigkeit eines nicht behandelten Aufzeichnungsträgers. Es hat sich gezeigt, dass derart beschichtete Aufzeichnungsträger praktisch keine Kratz- und Schleifspuren mehr zeigen.A purely mechanical application process has been found to be particularly effective, in which the metal soap which has been prepared according to the invention is rubbed thinly and evenly onto the aluminum surface by means of a soft cotton ball. The effectiveness of this soap layer increases with increasing degree of polishing. Such polished layers nevertheless have the mattness of an untreated recording medium. It has been shown that recording media coated in this way show practically no more scratches and scratches.
Claims (6)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE19803032223 DE3032223A1 (en) | 1980-08-27 | 1980-08-27 | METHOD FOR REDUCING OR COMPLETELY ELIMINATING SAND OR SCRATCHES ON METAL PAPER |
DE3032223 | 1980-08-27 |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0047360A1 EP0047360A1 (en) | 1982-03-17 |
EP0047360B1 true EP0047360B1 (en) | 1985-01-16 |
Family
ID=6110473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP81104333A Expired EP0047360B1 (en) | 1980-08-27 | 1981-06-05 | Process for the manufacture of a sliding layer on the surface of a recording substrate coated with a thin aluminium layer |
Country Status (3)
Country | Link |
---|---|
EP (1) | EP0047360B1 (en) |
JP (1) | JPS5763274A (en) |
DE (2) | DE3032223A1 (en) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0122948B1 (en) * | 1983-04-21 | 1987-07-08 | Ibm Deutschland Gmbh | Process for producing a metal-soap antifriction layer on a metallized registration layer support |
DE19542288A1 (en) * | 1995-11-14 | 1997-05-15 | Huels Chemische Werke Ag | Antifoam dispersion for aqueous surfactant systems |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE849609C (en) * | 1950-11-06 | 1952-09-15 | Bosch Gmbh Robert | Tape-shaped recording medium for recording measuring instruments |
US3620831A (en) * | 1968-12-30 | 1971-11-16 | Honeywell Inc | Electrographic recording medium |
GB2029266B (en) * | 1978-06-26 | 1982-05-06 | Fuji Photo Film Co Ltd | Thermal recording elements |
US4342043A (en) * | 1980-02-11 | 1982-07-27 | Exxon Research & Engineering Co. | Sheet feeding for a facsimile system with anti-static electricity additive |
-
1980
- 1980-08-27 DE DE19803032223 patent/DE3032223A1/en not_active Ceased
-
1981
- 1981-06-05 EP EP81104333A patent/EP0047360B1/en not_active Expired
- 1981-06-05 DE DE8181104333T patent/DE3168282D1/en not_active Expired
- 1981-08-18 JP JP56128258A patent/JPS5763274A/en active Granted
Also Published As
Publication number | Publication date |
---|---|
JPS5763274A (en) | 1982-04-16 |
DE3032223A1 (en) | 1982-04-01 |
DE3168282D1 (en) | 1985-02-28 |
EP0047360A1 (en) | 1982-03-17 |
JPS6145959B2 (en) | 1986-10-11 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
DE2744184C3 (en) | Partially cured coating films and processes for the production of abrasion-resistant coated molded parts | |
DE2948845C2 (en) | Magnetic storage disk and method for making the same | |
EP0570795A1 (en) | Antistatic plastic parts | |
DE2900233A1 (en) | POLISHING COMPOUNDS, IN PARTICULAR FOR EYE GLASSES MADE OF ORGANIC MATERIAL | |
DE3029837C2 (en) | Electrographic or electrophotographic recording material or electrostatographic intermediate image carrier | |
DE3614439A1 (en) | MAGNETIC RECORDING MEDIUM | |
EP0047360B1 (en) | Process for the manufacture of a sliding layer on the surface of a recording substrate coated with a thin aluminium layer | |
EP0718377A1 (en) | Corrosion inhibiting pigment and its use | |
EP0254924B1 (en) | Drawing material | |
EP0047814B1 (en) | Registration support for electroerosion printing | |
DE3930045A1 (en) | METHOD FOR PRODUCING AN ELECTROPHOTOGRAPHIC RECORDING MATERIAL | |
DE3222638C2 (en) | ||
DE1494174C3 (en) | Process for the production of an abrasive material for working leather | |
EP0036469B1 (en) | Process for the manufacture of a sliding layer on the surface of the aluminium layer of a recording substrate | |
JPH0563783B2 (en) | ||
EP0050704B1 (en) | Process for the manufacture of a sliding layer on the surface of the aluminium layer of a recording substrate | |
EP0183696A1 (en) | Recording medium for recording apparatus | |
EP0035106A2 (en) | Process for producing a record carrier coated with a lacquer layer containing a contrast agent and a layer containing aluminium, and record carrier produced thereby | |
DE752714C (en) | Anchoring of lacquer layers on water-swellable films | |
DE1935718C3 (en) | Electrophotographic recording material with a paper support | |
DE2355840A1 (en) | METHOD OF MANUFACTURING MAGNETIC RECORDING DISCS | |
EP0887388B1 (en) | Inscribable coatings for adhesive tapes | |
DE2500912A1 (en) | MANUFACTURE OF CARRIER MATERIALS | |
DE3631484A1 (en) | MAGNETIC RECORDING MATERIAL AND METHOD FOR THE PRODUCTION THEREOF | |
DE3008303A1 (en) | AQUEOUS COATING AGENT |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
17P | Request for examination filed |
Effective date: 19820524 |
|
GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
AK | Designated contracting states |
Designated state(s): DE FR GB IT |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED. Effective date: 19850116 |
|
REF | Corresponds to: |
Ref document number: 3168282 Country of ref document: DE Date of ref document: 19850228 |
|
ET | Fr: translation filed | ||
PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
26N | No opposition filed | ||
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19900707 Year of fee payment: 10 |
|
PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: GB Payment date: 19910528 Year of fee payment: 11 Ref country code: FR Payment date: 19910528 Year of fee payment: 11 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Effective date: 19920401 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: GB Effective date: 19920605 |
|
GBPC | Gb: european patent ceased through non-payment of renewal fee |
Effective date: 19920605 |
|
PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: FR Effective date: 19930226 |
|
REG | Reference to a national code |
Ref country code: FR Ref legal event code: ST |