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翻訳と辞書　辞書検索 [ 開発暫定版 ] スポンサード リンク G7 Method ： ウィキペディア英語版 G7 Method The G7 Method is a printing procedure used for visually accurate color reproduction by putting emphasis on matching grayscale colorimetric measurements between processes. G7 stands for grayscale plus seven colors: the subtractive colors typically used in printing (Cyan, Magenta, Yellow, and Black) and the additive colors (Red, Green, and Blue). The method is used in many applications of printing such as offset lithography, flexography, and gravure since it uses a one-dimensional neutral print density curve (NPDC) to match neutral tonality between two G7 calibrated printing systems. The G7 method is not a completely accurate color management system nor is it officially standardized by the International Color Consortium (ICC). ==History== The G7 method was created by Don Hutcheson, chairman of the IDEAlliance GRACoL (International Digital Enterprise Alliance, General Requirements for Applications in Commercial Offset Lithography) in 2006. It was created to solve the problem of computer to plate (CtP) printing systems and other devices printing images with different tonal value increases (TVIs), or dot gains. Also, professionals in the printing industry follow the International Organization for Standardization’s (ISO) principles of half-tone printing, called ISO 12647-2, which does not specify colorimetric values for gray balance and refers to multiple TVI curves. This results in an ambiguous definition of the print’s final ‘appearance’.〔(【引用サイトリンク】title=Demystifying Color Standards )〕 The G7 method solved this problem by creating Neutral Print Density Curves (NPDC) that related neutral density to the half-tone dot percentages of a print image rather than a TVI curve relating the input dot percentage to the output gain relative to the input percentage.〔 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「G7 Method」の詳細全文を読む スポンサード リンク 翻訳と辞書 : 翻訳のためのインターネットリソース Copyright(C) kotoba.ne.jp 1997-2016. All Rights Reserved.