Abstract
ALTHOUGH, as stated in the review of process work, there has been no outstanding achievement during the past year, the editor has provided a very pleasing and useful volume, as his custom is. The making of halftone blocks seems to have arrived at a degree of perfection that it is very difficult even if possible to surpass, though the method may perhaps be simplified by the efforts made to render it more systematic. Rotary photogravure is being applied to multicolour printing, and the method is being successfully worked on sheet-fed machines producing excellent work up to speeds of 2500 copies per hour for each colour. A higher output may be expected from the same cylinders when rotary web machines are available. The replacement of the costly solid or tubular copper cylinders used for rotary gravure by iron cylinders faced with thin copper sheets has considerably advanced during the year.
Penrose's Annual: the Process Year Book and Review of the Graphic Arts.
Edited by Wm. Gamble. Vol. 27. Pp. xv + 142 + 60 + 80 plates. (London: Percy Lund, Humphries and Co., Ltd., 1925.) 8s. net.
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[Book Reviews]. Nature 115, 296 (1925). https://doi.org/10.1038/115296b0
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DOI: https://doi.org/10.1038/115296b0