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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.
The problem can occur with most types of printing, and is avoided by the use of slipsheets between copies (so any ink transfer occurs onto discardable paper) or anti-set-off spray powder. The term in offset printing also refers to the unwanted transfer of ink to rollers and friction points throughout the printing press. Ink that is not properly ...
Offset is a process similar to lithography, consisting of applying an ink on a metal plate, usually aluminum. It was the parallel product of two inventors: in 1875, the British Robert Barclay developed a version for printing on metals (tin) and, in 1903, the American Ira Washington Rubel adapted it for printing on paper. [3]
Lithographic offset printing is typically used, to ensure the images are good quality. Printing presses for lenticulars must be capable of adjusting image placement in 10-μm steps, to allow good alignment of the image to the lens array. Typically, ultraviolet-cured inks are used. These dry quickly by direct conversion of the liquid ink to a ...
Offset printing replaced chromolithography in the late 1930s. To find or purchase a lithograph, some suggest searching for examples with the original frame as well as the publisher's stamp. [ 18 ] Both European and American chromolithographs can still be found, and can range in cost from hundreds to thousands of dollars.
Applying the filmless imaging concept developed by his father, Landa founded Indigo Digital Printing in 1977. In 1993, at IPEX, he introduced the E-Print 1000, a digital color printing press. Bypassing the printing plate setup process, the new process eliminated numerous costly and time-consuming steps associated with offset printing.
Print on demand with digital technology is a way to print items for a fixed cost per copy, regardless of the size of the order. While the unit price of each physical copy is greater than with offset printing, the average cost is lower for very small print jobs, because setup costs are much greater for offset printing.
The printing cylinders are usually made from copper plated steel, which is subsequently chromed, and may be produced by diamond engraving; etching, or laser ablation. Gravure printing is known for its ability to produce high-quality, high-resolution images with accurate color reproduction and using viscosity control equipment during production.