…All of these have an electrical resistance of 10 12 to 10 15 Ω cm or more in the dark, and in light, this resistance drops by two to three orders of magnitude or more; this property is used to create an electrostatic latent image. The most common exposure method is to project a two-dimensional light image through a lens, but other methods have also been developed, such as writing a light image by one-dimensionally scanning a laser beam (laser xerography) and irradiating an X-ray image instead of light (X-ray electrophotography). On the other hand, in non-optical methods, an electrostatic latent image is formed directly on an insulator layer using a multi-needle electrode or a modulated ion flow, without going through the charging and exposure steps. … *Some of the terminology that refers to "X-ray electrophotography" is listed below. Source | Heibonsha World Encyclopedia 2nd Edition | Information |
…これらはいずれも暗所では1012~1015Ω・cm以上の電気抵抗を有し,明所では2~3桁以上その電気抵抗が低下するので,この性質を利用して静電潜像が作られる。露光は二次元光像をレンズを通して投影する方法がもっともふつうであるが,レーザー光などを一次元走査することによって光像を書き込む方法(レーザー・ゼログラフィー),光の代りにX線像を照射する方法(X線電子写真)なども開発されている。他方,非光学的方式では,帯電・露光工程を踏まずに,多針電極,または変調されたイオン流により直接絶縁体層の上に静電潜像が形成される。… ※「X 線電子写真」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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