Valentine and Sons Publishers
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| Valentine/ Back of postcard |
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| Valentine/ Back of postcard |
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| Valentine/ Halloween 3 withces/ c1910 |
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| Valentine/ Halloween/ leaves |
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| Valentine/ Halloween |
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| Valentine and Sons/ Halloween/Artotype |
Artotype - Invented by J. B.
Obernetter of Germany, this process is a form of the collotype process, a
photo-mechanical printing process and similar to that of the Albertype.
It was patented in America in 1878 and in Canada in 1879. It
looks like a full-toned albumen photograph, however it was printed on a
lithographic press using ink. This process was the precursor to
half-tone engraving using dots. Thousands of images could be printed
economically and would be used in magazines and catalogues. Lindop and
Cooper, from St. Thomas were the driving force in bringing this process over
from Germany".
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| Valentine and Sons/ Halloween/back |
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