Other formats

    Adobe Portable Document Format file (facsimile images)   TEI XML file   ePub eBook file  

Connect

    mail icontwitter iconBlogspot iconrss icon

Typo: A Monthly Newspaper and Literary Review, Volume 1

(From the Inland Printer.)

(From the Inland Printer.)

Faint Lining.—This recipe is both simple and cheap: Dissolve a few ounces of gum arabic in water; use eight drops to a pint of ink; mix blue paste with warm water, and always strain through a cloth. If you wish a slightly darker blue, add a few drops of alcohol. This ink will run smoothly on any kind of paper.

White Ruling Ink.—To make a white ink that can be used in a ruling pen as India ink is used: Mix Chinese white with water containing enough gum arabic to prevent the immediate settling of the substance. Magnesium carbonate may be used in a similar way. They must be reduced to impalpable powder.

New Watermarking Process.—A German papermaker has invented a process for the imitation of water-marked papers by such means that the lines are produced after the paper has been printed or calendered. The design or device to be produced is drawn on thin paper and pasted on to cardboard, say of one inch in thickness. The design or device is then cut off and pasted on to a stout cardboard, and covered with a thin sheet of paper. If, then, the plate or relief thus produced is passed through a calender, together with a paper to be marked, the desired effect will be produced. The relief or plate may be used a great number of times.

Etching Metal Surfaces.—The following method of etching metallic surfaces, by which it appears possible to produce highly decorative effects, has recently been published. The article to be treated is electroplated with gold, silver, nickel, or other metal, and on this the design which it is desired to produce is traced with some suitable acid-resisting substance. It is them immersed in an acid-bath, by the action of which those portions of the surface which are left unprotected are deprived of their electroplated coating, and the naked metal beneath is given a frosted or dead appearance. The article is then well rinsed to remove all traces of the acid employed, and the acid-resisting varnish is removed by the use of alcohol, oil, or other proper solvent. The result is a frosted or dead-lustre surface of the original metal, upon which the design in the electroplated metal stands up in relief. If, for example, the article be one of copper and the plating silver, the design will be in silver upon a dead copper ground. It is manifest that the operation may be reversed, that is, the design to be reproduced, instead of being protected, as in the foregoing procedure, may be left unprotected, and the remainder of the electroplated surface covered. In this ease, the design would appear to be in dead copper on a silver ground.