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Heidelberger Druckmaschinen AG (German pronunciation: [ˈhaɪdl̩ˌbɛʁɡɐ ˈdʁʊkmaˌʃiːnən ʔaːˈɡeː] ⓘ), sometimes referred to as Heidelberg or Heideldruck for short, is a German precision mechanical engineering company with registered offices in Heidelberg (Baden-Württemberg) and headquarters in nearby Wiesloch-Walldorf (Baden-Württemberg). [3]
The Original Heidelberg Platen Press was a letterpress printing press manufactured by the Heidelberger Druckmaschinen company in Germany. It was often referred to as the Heidelberg Windmill, after the shape and movement of its paper feed system. When introduced, it was also called the "Super Heidelberg" or the "Super Speed". [1] [2]
Offset printing is a common printing technique in which the inked image is transferred (or "offset") from a plate to a rubber blanket and 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.
Rotary letterpress printing was used in the mid-twentieth century to print most major newspapers. In offset lithography, the image is chemically applied to a plate, generally through exposure of photosensitive layers on the plate material. Lithography is based on the fact that water and oil do not mix, which enables the planographic process to ...
1917 press room, using a line shaft power system. At right are several small platen jobbing presses, at left, a cylinder press.. With the advent of the Industrial Revolution and industrial mechanisation, inking was carried out by rollers that passed over the face of the type, then moved out of the way onto an ink plate to pick up a fresh film of ink for the next sheet.
Waterless printing yields higher ink densities and a broader color spectrum than conventional offset printing does. Waterless plates used on sheet-fed presses are commonly rated for runs of 100,000 to 200,000 impressions. The plates designed for use on web-offset presses can yield 300,000 to 500,000 impressions.
In 1988, the company acquired Itek Graphix, a leading manufacturer of plate-makers for duplicators (small format offset presses). By the late 1990s, A. B. Dick was a division of the Nesco company of Cleveland. [2] The company filed for bankruptcy in 2004, and its assets were acquired by Presstek, a manufacturer of prepress products. [8]
Chandler & Price was founded in 1881 in Cleveland, Ohio, by Harrison T. Chandler and William H. Price.They manufactured machinery for printers including a series of hand-fed platen jobbing presses, as well as an automatic feeder for these presses (the Rice Feeder), paper cutters, book presses, and assorted equipment.