Image forming apparatus and image forming method

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 9146521
APP PUB NO 20120275803A1
SERIAL NO

13449256

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Abstract

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An image forming apparatus forms a stamp image with a stamp image developer having a color developing temperature at a color erasing temperature of an image forming developer, and forms a mask image with a mask image developer having a color re-developing temperature at a temperature not lower than a color re-developing temperature of the image forming developer. Accordingly, when a confidential document is color-erased, the stamp image develops color, and when the color-erased confidential document again develops color, it can not be read.

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Patent Owner(s)

  • KABUSHIKI KAISHA TOSHIBA;TOSHIBA TEC KABUSHIKI KAISHA

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Iguchi, Ken Shizuoka, JP 222 1559
Kawaguchi, Takahiro Shizuoka, JP 238 2913
Taguchi, Hiroyuki Shizuoka, JP 213 1818
Taki, Hiroyuki Shizuoka, JP 221 1366
Tsuchihashi, Hiroyuki Shizuoka, JP 103 865
Yahata, Isao Shizuoka, JP 115 922

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