4. Photocopying
  5. Including fiber optics

Yasuhiko Yoshikawa

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Cleaning device in electrostatic copying apparatus

Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent

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Copying apparatus having a copy sheet sorter

Photocopying – Projection printing and copying cameras – Combined with or convertible to a contact printer
Patent

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Electrostatic copying apparatus

Photocopying – Including fiber optics
Patent

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Mount for a rotating drum and a developer within an electrostati

Photocopying – Including fiber optics
Patent

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Optical device in variable magnification electrostatic copying a

Photocopying – Including fiber optics
Patent

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