• Conservation Science in Museum
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• v.28
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• pp.1-16
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• 2022

Treatment was performed to conserve the Underwood Typewriter (Hangi 6863) from the collection of the National Hangeul Museum. Since the typewriter was presumably manufactured in the modern or contemporary era and bore patterns of damage such as component loss, corrosion, and paint loss, as well as being made of multiple materials, a condition survey and a scientific analysis were conducted ahead of the conservation treatment in order to carry out appropriate treatments for each material. The analysis confirmed that the typewriter was made of various materials including metal, paint, and rubber, and the conservation treatment was performed in the sequence of removal of contamination, reinforcement, and restoration under conditions where each material was stable. Conservation treatment was completed in a stable state by strengthening the layer of damaged paint and restoring the lost leg. These processes have enabled a better understanding of the materials and characteristics of typewriters manufactured in the early modern era, which is expected to provide basic data for typewriter conservation research to be conducted in the future.

• 발명특허
• /
• v.9 no.10 s.104
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• pp.46-48
• /
• 1984

• 발명특허
• /
• v.32 no.1 s.366
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• pp.83-83
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• 2007

• 프린팅코리아
• /
• v.10 no.2
• /
• pp.124-125
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• 2011

• 프린팅코리아
• /
• s.2
• /
• pp.180-183
• /
• 2002

• The Inventors News
• /
• no.39
• /
• pp.7-7
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• 2005

캐핑거의 `타액 테스트 거울` - 숄즈의 `타자기` - 빅토리아의 `탄광 통풍장치` - 안전 조임 너트를 가진 볼트

• Journal of Korean Electronics
• /
• v.10 no.2
• /
• pp.59-61
• /
• 1990

• Annual Conference on Human and Language Technology
• /
• 1990.11a
• /
• pp.247-247
• /
• 1990

• Journal of Korean Institute of Industrial Engineers
• /
• v.5 no.1
• /
• pp.27-44
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• 1979

The purpose of this study is to detect the problems of the Korean typewriter keyboards, and to analyze and compare the standard keyboard with other keyboards. We find that the standard Korean keyboard has a lot of problems in terms of mechanical engineering and human factors engineering and that it is less efficient than Kong's keyboard.

• 전기의세계
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• v.38 no.9
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• pp.46-51
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• 1989

TEMPEST란 통신장비나 정보처리장비에서 발산되는 미약한 전자신호가 탐지, 도청되는 현상인데 각국에서는 명칭에 대한 의미조차도 비밀로 제한하기 때문에 이 분야에 대한 정확한 기술현황 파악은 어렵다. 일반적으로 전산터미널 또는 전동타자기에서 발산되는 전자파는 단순 주파수성분을 가지며 신호의 크기도 상당히 강하므로 고감도 수신장비를 사용하면 신호를 탐지, 재생시켜 정보를 획득할 수 있다. 또한 암호장치를 사용한 통신장비의 신호도 탐지가능할 뿐 아니라 암호화되기 전의 전도성 발산신호와 안테나를 통한 복사성 발산신호를 비교하여 암호장치 자체의 알고리즘도 탐지가능하게 될 것으로 예측된다. 이와같은 전자파도청을 방지하기 위해 주요 통신 장비나 전자장비는 차폐상자를 사용하여 전자파의 복사성 발산신호를 비교하여 암호장치 자체의 알고리즘도 탐지가능하게 될 것으로 예측된다.