Rotary printing press
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A rotary printing press is a
cylinder
. Printing can be done on various substrates, including paper, cardboard, and plastic. Substrates can be sheet feed or unwound on a continuous roll through the press to be printed and further modified if required (e.g. die cut, overprint varnished, embossed). Printing presses that use continuous rolls are sometimes referred to as "web presses".
Developmental history
Baltimore Sun was the first American user of the rotary press.[7]
Types of rotary printing presses
Today, there are four main types of rotary presses;
cylinders
to print, they vary in their method.
- Rotary letterpress printing uses type metal plates molded in the form of a cylinder. The plates, called stereotypes, are coated with ink, then pressed against a continuous roll of paper. Rotary letterpress printing was used in the mid-twentieth century to print most major newspapers.
- In hydrophobic.
- Gravure is a process in which small cells or holes are etched into a copper cylinder, which are able to be filled with ink. All the colours are etched in different angles, thus while printing every colour is placed in proper position to give the appropriate image.
- Flexography is a relief system in which a raised image is created on a typical polymer-based plate.
In stamp collecting, rotary-press-printed stamps are sometimes a different size than stamps printed with a flat plate. This happens because the stamp images are farther apart on a rotary press, which makes the individual stamps larger (typically 0.5 to 1 mm (0.020 to 0.039 in)).
See also
References
Wikimedia Commons has media related to Rotary printing presses.
- ^ Multifunction Heat Press Machine
- ISBN 9780804772389.
- ^ Bailie, William (1906). Josiah Warren, the first American anarchist;. University of California Libraries. Boston : Small, Maynard & company.
- ^ "JOSIAH WARREN". faculty.evansville.edu. Retrieved 2022-08-26.
- ISBN 978-0-471-29198-5.
- ^ Lyons, M. (2013). Books: a living history. London: Thames & Hudson.
- ISBN 978-1-59339-837-8.