| 21. | Both methods could be used to prepared curved plates for rotary presses, which were used for the longest print runs.
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| 22. | A . S . Abell of the " Baltimore Sun " was the first American user of the rotary press.
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| 23. | In 1956, he replaced the paper's flatbed press with a new rotary press that printed 13, 000 32-page sections per hour.
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| 24. | This became so popular that, in 1889, Marinoni developed a color rotary press that could print 20, 000 sheets per hour.
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| 25. | Hoe constantly made improvements, e . g . by amending his original rotary press specification 175 times before it was superseded.
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| 26. | The ensuing casting could be made curved for use on a rotary press or flat for the slower flat bed presses.
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| 27. | The rotary press itself is an evolution of the cylinder press, also patented by William Nicholson and invented by Friedrich Koenig.
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| 28. | The cylindrical plate used on a rotary press has a seam where ink tends to accumulate, resulting in joint line pairs.
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| 29. | The pressroom, with a new press and a rotary press purchased from " The Defiance Crescent News ", was built in 1961.
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| 30. | Since the invention of high-speed rotary presses in the last century, a big newspaper or magazine could touch a million or two.
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