Providing erasable printing with nanoparticles
First Claim
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1. A method of erasable printing by a printing device, the method comprising:
- applying nanoparticle toner and printing a dot by the printing device on plain paper; and
erasing, subsequently, the dot by emitting a signal or field by the printing device to change an orientation of portions of the applied nanoparticle toner on the plain paper.
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Abstract
An apparatus and method for providing rewritable or erasable printing or copying that utilizes nanoparticle ink or toner is disclosed. A paper-like material is described using nanoparticles that are selectively controlled to show a substantially dark, gray, or white dot depending on an emitted signal or field in a printer or copier device. Also disclosed is a printer or copier device that erases and writes nanoparticles to a paper-like material depending on an emitted magnetic signal in a printer or copier device.
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Citations
10 Claims
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1. A method of erasable printing by a printing device, the method comprising:
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applying nanoparticle toner and printing a dot by the printing device on plain paper; and erasing, subsequently, the dot by emitting a signal or field by the printing device to change an orientation of portions of the applied nanoparticle toner on the plain paper. - View Dependent Claims (3, 4, 5, 6)
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2. A printing device configured for erasable printing comprising:
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the printing device configured to apply nanoparticle toner and print a dot on plain paper; and wherein the dot is subsequently erased by the printing device by emission of a signal or field to change an orientation of protions of the applied nanoparticle toner on the plain paper. - View Dependent Claims (7, 8, 9, 10)
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Specification