Portable electronic reading apparatus
First Claim
Patent Images
1. An electronic book device comprising:
- a rewritable viewing screen; and
an electrical printhead for writing picture elements of said viewing screen, wherein said viewing screen has a rewritable electronic colorant for printing document content therewith.
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Accused Products
Abstract
An electronic book, having a single screen, employs an electric field addressable, rewritable, colorant, preferably a bistable molecular colorant, for providing printed pages sequentially to a reader. The electronic book includes the rewritable screen coupled to an extraction-retraction device, an electrode array printer, a sheet position detector, and associated circuitry to download, store, sequence, and print images on the screen. Methods associated with document distribution are another aspect of the invention.
88 Citations
43 Claims
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1. An electronic book device comprising:
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a rewritable viewing screen; and
an electrical printhead for writing picture elements of said viewing screen, wherein said viewing screen has a rewritable electronic colorant for printing document content therewith. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A rewritable digital book device comprising:
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a housing means for housing components of said device;
means for downloading, storing, sequencing, and erasably printing document content; and
viewing means for sequentially, erasably writing said content at a commercial grade high resolution hard copy pixel resolution. - View Dependent Claims (17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29)
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30. A method of providing readable pages, the method comprising:
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downloading data representative of each of said readable pages into a memory;
providing a viewing screen having an electric field addressable rewritable colorant thereon; and
writing each of said pages sequentially to the viewing screen by passing the screen adjacently across a printhead having electrical fields associated with pixels of the screen such that said data is transferred from said memory to said screen. - View Dependent Claims (31, 32, 33, 34)
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35. A method of doing business of distribution of a document, the method comprising:
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transmitting electronic data representative of said document; and
providing a customer with mechanisms associated with said transmitting for said customer to receive said data on a portable reading device having a single display screen including an electric field addressable rewritable colorant displaying said data in a form substantially identical to a hard copy form of said document. - View Dependent Claims (36, 37, 38, 39, 40, 41, 42, 43)
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Specification