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Computerworld Xerox touts erasable paper, smart documents
The hi-tech paper can be reused up to 100 times
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April 29, 2008 (IDG News Service) Xerox Corp.'s research arm yesterday showcased its latest innovations, including erasable paper and tools that make documents "smart" by adding a deeper meaning to words and images.
Since its establishment in 1970, the Palo Alto Research Center Inc. (PARC), funded by Xerox, has created numerous technologies now available on PCs, including Ethernet, the graphical user interface (GUI) and the computer mouse. The laboratory, with other Xerox research facilities, is now trying to help its parent company and other start-ups by focusing on printing and other innovations to access, use and secure electronic documents.
Scientists demonstrated paper that can be reused after printed text automatically deletes itself from the paper's surface within 24 hours. Instead of trashing or recycling after one use, a single piece of paper can be used a second time, and reused up to 100 times, said Eric Shrader, area manager at PARC.
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The paper contains specially coded molecules that create a print after being exposed to ultraviolet light emitted from a thin bar in a printer. The molecule readjusts itself within 24 hours to its original form to delete the print, or heat can readjust the molecule instantly. Xerox developed the molecule.
The ultraviolet bar itself is very small, so it can be used in mobile printers, Shrader said. The technology could also be useful for network printing.
For now, the technology prints effectively only in black and white. Although good for everyday prints, ink remains a better option for high-quality prints. Shrader couldn't project when reusable paper or UV printers would reach consumers.
Scientists also demonstrated technologies to make documents more intelligent by providing a deeper meaning to text and images. This is done by cross-referencing similar data and images mined off the Internet and incorporating other sources like e-mail messages and corporate networks.
The company's hybrid categorization technology, for example, can provide more accurate answers to questions than search engines, said Christopher Dance, manager for data mining research at Xerox. The company is developing the Factspotter data mining software, which takes data sources and builds a structure around images and words that make it easier for users to locate specific information.
For example, if a user adds a travel diary and uploads an image from Cuzco in Peru, Factspotter can categorize a document and provide context to words and images based on information from the diary and similar images mined from the Web.
The technology could be used in search engines, but it is more relevant for areas like the legal discovery process during litigation, Dance said.
PARC is also developing algorithms to better secure data on a document through its intelligent redaction technology, which automates the process of blacking out certain parts of a document considered confidential. For example, when there is a legal subpoena of medical records, information like diseases need to be blacked out, said Jessica Staddon, manager of security and privacy research at PARC. Based on rules established to protect the data, the technology weeds out information to blank out, like drug use and mental health conditions.
In medical records, for example, the technology can automatically detect words to redact based on the name of a drug or medical organizations. The current data redaction rates show about 75% accuracy, Staddon said.
Data redaction processes are currently inefficient because they require domain experts and hours of manual labor, Staddon said. The intelligent redaction technology computerizes the process and provides the expertise based on artificial intelligence software tools and algorithms developed by PARC.
Reprinted with permission from
IDG.netStory copyright 2008 International Data Group. All rights reserved.
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