| 摘要 |
The aim of the invention is to produce a type of print which can be erased, selectively washed or cleaned, plasticized without handling via means of telecommunication, existing networks, and improving its physical or computer preservation. The print is produced on a substrate provided with a hydrophile coating, this substrate being made of a natural cellulose material or of a synthetic material, said substrate being impermeable, smooth or microporous in several degrees. It is a substrate on which it is possible to print, write, draw or reproduce and subsequently erase, correct, clean, totally or partially, dry, with water or chemical solvents or with hydrocarbons, relatively or absolutely and selectively. One or two printing levels can be used. The substrates having a hydrophile coating will, after printing, be coated with an impermeable transparent plastic film. These methods can be implemented and operated on communication networks already in existence or to be created.
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