Daguerreo type (English spelling)

Japanese: daguerreo type(英語表記)daguerreotype
Daguerreo type (English spelling)

...Daguerre also discovered that if the plate was developed and then treated with an aqueous solution of sodium thiosulfate to remove the unexposed silver iodide, the image could be preserved without discoloration, i.e., fixed. Daguerre's method is called the daguerreotype, and is the prototype of photography, incorporating all of today's photographic processes of exposure, development, and fixing. With the daguerreotype, only one photograph can be obtained using one photosensitive plate, but in 1841, the British WHF Talbot invented the negative-positive method, in which a negative image of a photograph is created using silver iodide photosensitive paper, and this negative is then printed onto photosensitive paper to create a positive image. ...

*Some of the terminology explanations that mention "Daguerreo type" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…ダゲールは,感光板を現像したのちチオ硫酸ナトリウム水溶液で処理して未感光ヨウ化銀を除去すると画像が変色せずに保存できること,すなわち定着されることも見いだした。ダゲールの方法は,ダゲレオタイプdaguerreo typeと呼ばれ,撮影,現像,定着という今日の写真のプロセスをすべて織り込んでいる写真の原型である。ダゲレオタイプでは1枚の感光板を使って1枚の写真だけしか得られないが,41年にイギリスのW.H.F.タルボットは,ヨウ化銀感光紙を使って写真のネガ像を作り,このネガを感光紙に焼き付けてポジ像を作るネガポジ法を考案した。…

※「daguerreo type」について言及している用語解説の一部を掲載しています。

出典|株式会社平凡社世界大百科事典 第2版について | 情報

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