Plain paper copy

Japanese: plain paper copy(英語表記)plainpapercopy
Plain paper copy

...there are two methods: the indirect method (PPC, short for plain paper copy), which transfers and fixes the image to another recording medium (such as ordinary paper). Chester F. Carlson (1906-68), an American patent attorney, began researching ways to make the transcription process more efficient by machine. In 1938, he succeeded in giving a static charge to a layer of sulfur molten on a zinc plate by frictional charging, and developing this with ruthenium powder (a type of electroscopic powder) to obtain a photographic image. He invented the basic principle of today's electrophotography and obtained a patent (1940).

*Some of the terminology explanations that refer to "plain paper copy" are listed below.

Source | Heibonsha World Encyclopedia 2nd Edition | Information

Japanese:

…coated paper copyの略)と,他の記録担体(例えば普通紙など)に転写,定着する間接方式(PPC。plain paper copyの略)の2方式がある。 弁理士をしていたアメリカのカールソンChester F.Carlson(1906‐68)は,転記作業を機械により効率よくできないものかと考えて研究に取り組み,1938年,亜鉛板上に溶融塗布した硫黄層に摩擦帯電で静電荷を与え,これをリュポジューム粉(検電粉の一種)で現像して写真像を得ることに成功,今日の電子写真の基本原理を発明して特許(1940)を得た。…

※「plain paper copy」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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