Ricoh is a global leader, a front-runner in fully exploiting the
advantages of Chemical Rewritable and Physical Rewritable technologies.
Ricoh was also first to develop and commercially deploy reversible
thermosensitive recording media. Here is a brief explanation of this
remarkable technology.
Coloring and decoloring characteristics of CR film
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| In chemical rewritable (CR) technology,
images are made to chemically appear or disappear through
controlled application of heat. |
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| Color
appears when temperatures just above 180°c are
applied to the media followed by rapid cooling.
Color disappears when temperatures ranging from
130°c to 170°c are applied to the media. |
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| Color
appears when leuco dye and chemical developer
are brought together. The color disappears when
the developer combines with itself to prevent it
from combining with the dye molecules. |
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Coloring and decoloring characteristics of PR film
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| In physical rewritable (PR) technology,
images are made to physically appear or disappear through the
controlled application of heat. |
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Image
appears: >130°c
Image disappears: 100 to 120°c |
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| Gaps produced
in the imaging layer deflect light which causes the
image to become visible. When the gaps are eliminated,
the image disappears. |
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