Catalog Watermark Record For Free

Watermarks were first developed about 1282 by Italian papermakers at Fabriano. By the 15th century, most manufacturers were using watermarks to assure quality and authenticity. Now the characteristic patterns provide a method to distinguish paper manufacturers and sometimes date the paper.

A watermark stored in a data file refers to a method for ensuring data integrity which combines aspects of data hashing and digital watermarking. Both are useful for tamper detection, though each has its own advantages and disadvantages.

Asset Protection - Watermarks are used to protect images and visual files from being stolen and used or altered without the owner's permission.

Like chain and laid lines, watermarks become clearly visible in transmitted light because they are thinner areas that show as bright lines. They are made by sewing a bent wire to the top of the mould, causing fewer fibers to form the sheet in the protruding areas.

A watermark is a design which is put into paper when it is made, and which you can only see if you hold the paper up to the light. Banknotes often have a watermark, to make them harder to copy illegally. 2. See also high-water mark.

Watermarks served as trademarks of the paper mills or to distinguish different batches or grades of paper. Therefore, watermarks nowadays can be used to investigate the quality of historic paper, identify production mills, their location or the paper date.

Watermarks were first developed about 1282 by Italian papermakers at Fabriano. By the 15th century, most manufacturers were using watermarks to assure quality and authenticity. Now the characteristic patterns provide a method to distinguish paper manufacturers and sometimes date the paper.