electrotype

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electrotype

[i′lek·trə‚tīp]
(graphic arts)
A duplicate printing surface prepared by making a mold of the type page or halftone plate, then suspending this mold in a bath of copper sulfate and sulfuric acid where, by electrolytic action, a thin shell of copper is deposited on it, and finally pouring molten type metal into this shell to strengthen it for use on the press.
References in periodicals archive ?
Similarly in-the-line-of-work were i6 copper electrotypes of the copperplates for Blake's Songs of Innocence and of Experience (fig.
The faithfulness of the electrotypes to the originals, at least so far as one can tell from prints made by Blake, is astonishing.
Although the English silver is well known (for example, from the electrotypes in the Whiteley Silver Galleries in the Victoria and Albert Museum), and some was shown at Sotheby's in London in 1991, this exhibition and its handsome catalogue incorporate new research.
Moreover, he made electrotype casts of all the cameos and sealing-wax impressions of the intaglios--a collection now in the Beazley Archive, having passed into the possession of Sir John Beazley (who was far more than simply a Greek-vase expert).
10), which we know only in electrotype (the Althorp original is in private hands).