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1840s
1848 Applegath
and Cowper developed a vertical rotary printing machine for The
Times
Napier double-platen
printing machine came into general use for book printing, able to
work up to 800 impressions an hour
Papier-maché
moulds or flongs patented for use in stereotyping
Electrotyping
came into use, chiefly for illustrations at first, but later for
long print runs
Colour printing
became commercially viable for cheap books
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