Planographic printing

Polymerizable compositions, (IV) and (V), used as binder polymers in planographic printing plate compositions were prepared by Sugasaki et al. (6) and showed excellent printing durability test results. 

A case report of a man who was admitted to a hospital with skin ulcers on both hands due to dermal exposure to ammonium dichromate in a planographic printing establishment where he had worked for a few months noted that he also had breathing difficulties. However, because he also had many previous attacks of hay fever and asthma, it was not possible to distinguish whether his breathing difficulties were caused by or exacerbated by dermal exposure to ammonium dichromate (Smith 1931). 

Longer-term occupational exposure to chromium compounds in most chromium-related industries can cause deep penetrating holes or ulcers on the skin. A man who had worked for a few months in a planographic printing establishment, where he handled and washed sheets of zinc that had been treated with a solution of ammonium dichromate, had skin ulceration on both hands (Smith 1931). 

Planographic—print area and non-print area are in the same plane—offset lithography, dry offset lithography. 

Pantone printing n. Planographic printing proves using plates having mercury- or amalgam-coated non-printing areas. 

The planographic printing plate has a hydrophilic support and a hydrophobic image on the hydrophilic support. A method of producing the planographic printing plate includes (34) ... 

KAW 05] Kawuchi L, Planographic printing plate precursor, Patent EP 1627735 A2, 2005. 

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