Screenless lithography

Screenless lithography is a reprographic technique for halftoning dating to 1855, when the French chemist and civil engineer Alphonse Poitevin discovered the light–sensitive properties of bichromated gelatin and invented both the photolithography and collotype processes. After the invention of the halftone screen in the 1880s, screenless lithography was abandoned. Until the end of World War II, two kinds of photomechanically made plates were used in lithography: albumin plates and deep-etch plates. Presensitized plates appeared in the 1950s, and wipe–on plates appeared in the 1960s.

单词	Screenless lithography
释义	Screenless lithography 英语百科 Screenless lithography Screenless lithography is a reprographic technique for halftoning dating to 1855, when the French chemist and civil engineer Alphonse Poitevin discovered the light–sensitive properties of bichromated gelatin and invented both the photolithography and collotype processes. After the invention of the halftone screen in the 1880s, screenless lithography was abandoned. Until the end of World War II, two kinds of photomechanically made plates were used in lithography: albumin plates and deep-etch plates. Presensitized plates appeared in the 1950s, and wipe–on plates appeared in the 1960s.
随便看	sweet buttermilk的意思 sweet cacao的意思 sweetcakes的意思 Sweet Calabash的意思 sweet calabashes的意思 sweet calamus的意思 sweet calamuss的意思 Sweetcane的意思 sweetcane bark的意思 sweetcane bud的意思 sweetcane culm的意思 sweetcane culm dregs的意思 Sweetcaneflower Silvergrass Rhizome的意思 sweet cassava的意思 sweet cassavas的意思 sweetch的意思 sweet champagne的意思 Sweet Charity的意思 sweet cheeks的意思 sweetcheeks的意思 sweet cherries的意思 sweet cherry的意思 sweet cherry bark的意思 sweet cherry spider mite的意思 Sweet Chestnut的意思