Cantor Lectures on the History and Practice of the Art of Printing

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Wm. Clowes & Sons, Duke Street, Stamford Street, S.E., 1915 - 26 pagine

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Pagina 13 - journal of this day presents to the public the practical result of the greatest improvement connected with printing since the discovery of the art itself. The reader of this paragraph now holds in his hand one of the many thousand impressions' of the Times newspaper, which •were taken off last night by a mechanical apparatus.
Pagina 13 - Our Journal of this day presents to the public the practical result of the greatest improvement connected with printing since the discovery of the art itself. The reader of this paragraph now holds in his hand one of the many thousand impressions of The Times newspaper which were taken off last night by a mechanical apparatus. A system of machinery almost organic has been devised and arranged, which, while it relieves the human frame of its most laborious efforts in printing, far exceeds all human...
Pagina 13 - ... for a fresh coat of ink, which itself again distributes, to meet the ensuing sheet now advancing for impression, and the whole of these complicated acts is performed with such a velocity and simultaneousness of movement that no less than 1,100 sheets are impressed in one hour.
Pagina 13 - ... little more remains for man to do than to attend upon and watch this unconscious agent in its operations. The machine is then merely supplied with paper, itself places the...
Pagina 13 - ... watch this unconscious agent in its operations. The machine is then merely supplied with paper : itself places the forme, inks it, adjusts the paper to the forme newly inked, stamps the sheet, and gives it forth to the hands of the attendant, at the same time withdrawing the forme for a fresh coat of ink, which itself again distributes, to meet the ensuing sheet now advancing for impression ; and the whole of these complicated acts is performed with such...
Pagina 21 - Four, six, eight, ten or twelve-page papers are turned out at the rate of 24,000 per hour, and sixteen-page papers at 12,000 per hour; the odd pages being in every case accurately inserted and pasted in, and the papers cut at the top and delivered folded. The machine is constructed in two parts, in one portion the cylinders being twice the length of those in the other.
Pagina 13 - That the magnitude of the invention may be justly appreciated by its effects, we shall inform the public, that after the letters are placed by the compositors, and enclosed in what is called the form, little more remains for man to do, than to attend upon, and watch this unconscious agent in its operations.
Pagina 25 - ... many practical men hold the faith that three colours can never give an entirely satisfactory rendering of the subject. The weakness of the three-colour process is chiefly found in the rendering of blue in all its gradations, in its inability to yield a good grey, and in the imperfection of the blacks, which according to theory should be formed by the superposing of the three colours in equal strength. The remedy proposed is to use a black or neutral grey as a fourth printing. Dr. Albert advocated...
Pagina 25 - Whether to use three or four colours has long been one of the contested points in colour work. The theoretical advocates of three colours have stoutly held out for three-colour, but many practical men hold the faith that three colours can never give an entirely satisfactory rendering of the subject. The weakness of the three-colour process is chiefly found in the rendering of blue in all its gradations, in its inability to yield a good grey, and in the imperfection of the blacks, which according...

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