Printing 1947 Vocational Guidance Films: Careers with Publishers & Printers

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“Printing occupations, opportunities and technologies before electronics and computers changed the world.”

Reupload of a previously uploaded film with improved video & sound.

Public domain film from the Library of Congress Prelinger Archives, slightly cropped to remove uneven edges, with the aspect ratio corrected, and one-pass brightness-contrast-color correction & mild video noise reduction applied.
The soundtrack was also processed with volume normalization, noise reduction, clipping reduction, and/or equalization (the resulting sound, though not perfect, is far less noisy than the original).

http://creativecommons.org/licenses/by-sa/3.0/
https://en.wikipedia.org/wiki/Printing

Printing is a process for reproducing text and images, typically with ink on paper using a printing press. It is often carried out as a large-scale industrial process, and is an essential part of publishing and transaction printing.

The development of printing was preceded by the use of cylinder seals in Mesopotamia developed in 3500 B.C., and other related stamp seals. The earliest form of printing was woodblock printing, with existing examples from China dating to before 220 A.D. and Egypt to the fourth century. Later developments in printing include the movable type, first developed by Bi Sheng in China, and the printing press, a more efficient printing process for western languages with their more limited alphabets, developed by Johannes Gutenberg in the fifteenth century…

The printing press

Johannes Gutenberg’s work on his printing press began in approximately 1436 when he partnered with Andreas Dritzehen — a man he had previously instructed in gem-cutting — and Andreas Heilmann, the owner of a paper mill. It was not until a 1439 lawsuit against Gutenberg that an official record exists; witness testimony discussed type, an inventory of metals (including lead) and his type mold.

Compared to woodblock printing, movable type page setting and printing using a press was faster and more durable. The metal type pieces were sturdier and the lettering more uniform, leading to typography and fonts. The high quality and relatively low price of the Gutenberg Bible (1455) established the superiority of movable type for western languages, and printing presses rapidly spread…

Rotary printing press

The rotary printing press was invented by Richard March Hoe in 1843. It uses impressions curved around a cylinder to print on long continuous rolls of paper or other substrates. Rotary drum printing was later significantly improved by William Bullock.

Across the world, over 45 trillion pages (2005 figure) are printed annually. In 2006 there were approximately 30,700 printing companies in the United States, accounting for 2 billion…

Offset press

Offset printing is a widely used printing technique where the inked image is transferred (or “offset”) from a plate to a rubber blanket, then to the printing surface. When used in combination with the lithographic process, which is based on the repulsion of oil and water, the offset technique employs a flat (planographic) image carrier on which the image to be printed obtains ink from ink rollers, while the non-printing area attracts a film of water, keeping the non-printing areas ink-free.

Currently, most books and newspapers are printed using the technique of offset lithography. Other common techniques include:

– flexography used for packaging, labels, newspapers
– hot wax dye transfer
– inkjet used typically to print a small number of books or packaging and also, to print a variety of materials from high quality papers simulating offset printing, to floor tiles; Inkjet is also used to apply mailing addresses to direct mail pieces
– laser printing mainly used in offices and for transactional printing (bills, bank documents). Laser printing is commonly used by direct mail companies to create variable data letters or coupons, for example
– pad printing popular for its unique ability to print on complex three-dimensional surfaces
– relief print, (mainly used for catalogues)
– rotogravure mainly used for magazines and packaging
– screen-printing for T-shirts to floor tiles

Gravure

Gravure printing is an intaglio printing technique, where the image to be printed is made up of small depressions in the surface of the printing plate. The cells are filled with ink and the excess is scraped off the surface with a doctor blade, then a rubber-covered roller presses paper onto the surface of the plate and into contact with the ink in the cells. The printing plates are usually made from copper and may be produced by digital engraving or laser etching…

Related Articles:

  1. Digital Offset Printing

 

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