DE414226C - Treatment process for plates for chemistry made of magnesium or magnesium alloys like electron metal - Google Patents

Treatment process for plates for chemistry made of magnesium or magnesium alloys like electron metal

Info

Publication number
DE414226C
DE414226C DEC33261D DEC0033261D DE414226C DE 414226 C DE414226 C DE 414226C DE C33261 D DEC33261 D DE C33261D DE C0033261 D DEC0033261 D DE C0033261D DE 414226 C DE414226 C DE 414226C
Authority
DE
Germany
Prior art keywords
magnesium
plates
treatment process
metal
electron metal
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
DEC33261D
Other languages
German (de)
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.)
CHEM FAB GRIESHEIM ELEKTRON FA
Meisenbach Riffarth & Co Fa
Original Assignee
CHEM FAB GRIESHEIM ELEKTRON FA
Meisenbach Riffarth & Co Fa
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 CHEM FAB GRIESHEIM ELEKTRON FA, Meisenbach Riffarth & Co Fa filed Critical CHEM FAB GRIESHEIM ELEKTRON FA
Priority to DEC33261D priority Critical patent/DE414226C/en
Application granted granted Critical
Publication of DE414226C publication Critical patent/DE414226C/en
Expired legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/09—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers
    • G03F7/11—Photosensitive materials characterised by structural details, e.g. supports, auxiliary layers having cover layers or intermediate layers, e.g. subbing layers
    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03F—PHOTOMECHANICAL PRODUCTION OF TEXTURED OR PATTERNED SURFACES, e.g. FOR PRINTING, FOR PROCESSING OF SEMICONDUCTOR DEVICES; MATERIALS THEREFOR; ORIGINALS THEREFOR; APPARATUS SPECIALLY ADAPTED THEREFOR
    • G03F7/00—Photomechanical, e.g. photolithographic, production of textured or patterned surfaces, e.g. printing surfaces; Materials therefor, e.g. comprising photoresists; Apparatus specially adapted therefor
    • G03F7/004—Photosensitive materials
    • G03F7/04—Chromates

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Architecture (AREA)
  • Structural Engineering (AREA)
  • Printing Plates And Materials Therefor (AREA)

Description

Behandlungsverfahren für Platten für Chemigraphie aus lWagnesium oder 1Vfagnesiumlegierungen nach Art des Elektronmetalls. Die Verwendung von Elektronmetall und ähnlichen Legierungen des Magnesiums für die Herstellung von Platten für Chemigraphie ist bekannt; sie bietet neben anderenVorteilen gegenüber den bisher angewandten Kupfer-und Zinkplatten den Vorteil des leichteren Gewichtes der Druckplatten.Treatment process for plates for chemigraphy made of lWagnesium or 1Vfagnesium alloys of the electron metal type. The use of electron metal and similar alloys of magnesium for the manufacture of plates for chemigraphy is known; it offers advantages over those previously used, among other advantages Copper and zinc plates take advantage of the lighter weight of the printing plates.

Bei der Verwendung solcher Platten, deren Oberfläche durch geeignete Maßnahmen sorgfältig blank und plan gemacht werden muß, hat sich gezeigt, daß durch die Anwendung gebräuchlicher Leime schon vor derVornahme der Ätzung usw. auf der Metallschicht wie in der Leimschicht Störungen auftreten können, wodurch die Reinheit des Rasters und damit die Ruhe der Ton "virkung des kopierten oder geätzten Bildes empfindlich beeinträchtigt wird. Derartige Erscheinungen sind bisher irr Herstellungsverfahren von Autotypien, welche aus Zink, Kupfer und Messing liergestellr «erden (letzteres für Prä Bezwecke), noch nicht beobachtet worden.When using such panels, their surface is replaced by suitable Measures must be made carefully blank and flat, it has been shown that through the application of common glues even before the etching etc. are carried out on the Metal layer as in the glue layer interference can occur, reducing the purity of the grid and thus the calmness of the tone effect of the copied or etched image is sensitively affected. Such phenomena have hitherto been unrelated to manufacturing processes of autotypes made of zinc, copper and brass for preliminary purposes), has not yet been observed.

Eingehende Untersuchungen haben null zu der Erkenntnis geführt, daß die Störungen von der Bildung voll kleinen Löchern im Metall und in der Leimschicht herrühren und d<#r Entwicklung voll Wasserstoffbläschen zuzuschreiben sind, deren Ursache ein gewisser Säuregehalt des Leimes ist.In-depth research has led to the conclusion that the disturbances from the formation of small holes in the metal and in the glue layer originate and the development of full hydrogen bubbles can be ascribed to their The cause is a certain acidity of the glue.

Gemäß der Erfindung ist es gelungen, diesen schwerwiegenden Übelstand, welcher die Verwendung der all sich sehr geeigneten Elektronmetallegierungen stark behindern «-ürde, zu beseitigen, indem man je nach Zweckmäßigkeit zu dem einen oder anderen der im folgenden angegebenen Mittel zur Verhinderung der Gasentwicklung greift.According to the invention it has been possible to remedy this serious problem, which the use of the all very suitable electron metal alloys strong hinder "- would have to eliminate, depending on the expediency of one or the other other of the agents specified below for preventing gas evolution engages.

Der eine Weg besteht darin, die zu verwendende Kopierschicht (z. B. Fischleim) von einem Säuregehalt durch Behandlung mit geeigneten alkalischen Mitteln, vorzugsweise Ammoniak, zu befreien; es können aber auch Karbonate oder Ätzalkalien verwendet werden, von denen geringe Überschüsse nichts schaden. Durch die Chromsäure des Bichroinateswird, wie gefunden wurde, eineWasserstoffentwicklung nicht hervorgerufen.One way is to change the copy layer to be used (e.g. Isinglass) of an acid content by treatment with suitable alkaline agents, preferably ammonia, to free; however, carbonates or caustic alkalis can also be used can be used, of which small excesses do no harm. By the chromic acid of the bichroinate has not been found to cause hydrogen evolution.

Der andere Weg beruht auf der Verwendung eines zwischen die nasse (säurehaltige) Schicht und das blanke Metall aufgebrachten dünnett Schutzüberzuges aus einem wasserundurchlässigen Stoff, wie z. B. der Auflösung eines Harzes in einem organischen Lösungsmittel. Da die ganze Bebandlungsdauer bis zur Fertigstellung der Druckplatten sehr kurz ist, genügt schon ein hauchdünner Überzug einer solchen Schutzschicht. Diese wird nachher unter der Einwirkung der der Ätzung dienenden aufgespritzten Säure an den Stellen, w o die Auflösung der Leimschicht stattgefunden hat, abgehoben, so daß die Ätzung ihren ncriiialen Verlauf nehmen kann.The other way is to use one between the wet ones (acidic) layer and the bare metal applied thin protective coating made of a water-impermeable fabric, such as. B. the dissolution of a resin in one organic solvents. Since the entire duration of treatment until completion the printing plate is very short, a very thin coating of one is sufficient Protective layer. This is afterwards under the action of the etching sprayed acid at the points where the dissolution of the glue layer took place has lifted off, so that the etching can take its central course.

Schutzschichten unterhalb der lichtempfindlichen Schichten anzubringen, ist an sich bekannt, jedoch nicht im Sinne der vorliegenden Erfindung, nämlich als Mittel zur Verhinderung einer Einwirkung eines etwaigen Säuregehaltes in der, lichtem_pfindjichen Schicht auf die Metallunterlage; eine derartige Maßnahme zu treffen, war bei den bisher angewandten :Metallen (Kupfer, Zink, Stahl usw.) vollkommen entbehrlich wegen ihrer Unempfindlichkeit gegen die in Betracht kommenden äußerst niedrigen Säurekonzentrationen.To apply protective layers underneath the light-sensitive layers, is known per se but not within the meaning of the present invention, namely as a means of preventing the effects of any acidity in the light-sensitive layer on the metal base; such a measure to be met was for the previously used: metals (copper, zinc, steel, etc.) completely dispensable because of their insensitivity to those in question extremely low acid concentrations.

Claims (1)

PATENT-ANSPRÜCHE: t. Behandlungsverfahren für Platten für Chemigraphie aus Magnesium oder Magnesitunlegierungen nach Art des Ilektronmetalls, dadurch gekennzeichnet, daß als auf die Metallplatte aufzutragende, lichtempfindliche Schichten solche Stoffe, z. B. Leime, verwendet werden, die von Wasserstoff entwickelnden Bestandteilen vollkommen frei sind. z. Verfahren nach Anspruch r, dahin abgeändert, daß durch einen dünnen Schutzüberzug aus wasserundurchlässigen Stoffen die Berührung zwischen Metall und Wasserstoff entwickelnden Bestandteilen in der lichtempfindlichen Schicht verhindert wird.PATENT CLAIMS: t. Treatment process for plates for chemigraphy Made of magnesium or magnesite unalloys of the type of Ilectronmetals, characterized in, that, as light-sensitive layers to be applied to the metal plate, such substances z. B. glues, are used, the hydrogen-evolving components completely are free. z. A method according to claim r, modified so that by a thin Protective coating made of water-impermeable materials the contact between metal and Prevents hydrogen-evolving components in the photosensitive layer will.
DEC33261D 1923-03-03 1923-03-03 Treatment process for plates for chemistry made of magnesium or magnesium alloys like electron metal Expired DE414226C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEC33261D DE414226C (en) 1923-03-03 1923-03-03 Treatment process for plates for chemistry made of magnesium or magnesium alloys like electron metal

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEC33261D DE414226C (en) 1923-03-03 1923-03-03 Treatment process for plates for chemistry made of magnesium or magnesium alloys like electron metal

Publications (1)

Publication Number Publication Date
DE414226C true DE414226C (en) 1925-05-27

Family

ID=7020733

Family Applications (1)

Application Number Title Priority Date Filing Date
DEC33261D Expired DE414226C (en) 1923-03-03 1923-03-03 Treatment process for plates for chemistry made of magnesium or magnesium alloys like electron metal

Country Status (1)

Country Link
DE (1) DE414226C (en)

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