Electrotint: Or, The Art of Making Paintings in Such a Manner that Copper Plates and Blocks Can be Taken from Them by Means of Voltaic Electricity

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E. Palmer, 1842 - 26 páginas
 

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Página 29 - Shaw, do hereby declare the nature of the said invention, and the manner in which the same is to be performed, are fully described and ascertained in and by the following statement thereof (that is to say...
Página 37 - Having thus described the nature of my invention, and the manner in which the same is to be performed, I would...
Página 21 - Two parts by weight of sulphate of lead, two of lard, and one of white wax, are to be melted together, and stirred till nearly cold : if, after being . well ground, this should prove too thick for use, a little olive oil can be added.
Página 1 - Electrotint: or the art of making paintings in such a manner that copper plates and 'blocks' can be taken from them by means of voltaic electricity.
Página 33 - Electrotype process, which is now well understood; by which means a metal plate is produced, capable of transferring to paper, or other material, a fac-simile of the original painting.
Página 34 - ... printing roller; whilst those parts of the darkened copper which are left visible, either in lines or dots, will, when electrotyped, receive the ink from the roller, and when printed from, transfer an impression to paper, or other material. The composition used is made in the following manner: two parts, by weight, of sulphate of lead, two of lard, and one of wax, melted together, and stirred till nearly cold.
Página 34 - Broad portions of light are obtained by heaping on the composition to the thickness of one-eighth of an Inch, or more, in proportion to the size of the masses of white.
Página 29 - To EDWARD PALMER, of Newgate-street, in the City of London, Gent., for improvements in producing printing surfaces, and in printing china, pottery-ware, music, maps, and portraits. — [Sealed 12th June, 1841.] THIS invention consists, firstly, in a mode of obtaining printing surfaces, by drawing or painting on silver or copper, or other metallic or conducting surfaces, (or on surfaces made conducting after drawing or painting thereon,) and then, by means of the electrotype process, producing copper...
Página 30 - Metallic or conducting surface or surfaces, or on surfaces made conducting after painting or drawing thereon, so as to enable me, by the use of the aforesaid process of Electrotype or Electrography, to produce or obtain Copper or other Metallic plates with raised surfaces, from which prints may be taken, as from engraved wood blocks or stereotype plates.
Página 34 - ... light-coloured material, so as to produce the effect intended, by means of such brushes or tools, as will leave the composition in lines or dots, capable of making an impression in the electrotint plate, that will not come in contact with the printing roller ; whilst those parts of the darkened copper that are left visible, either in lines or dots, will, when electrotyped, receive the ink from the roller, and when printed from, transfer an impression to paper, or other material.

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