Paper embossing
Embossing and debossing are the processes of creating either raised or recessed relief images and designs in paper and other materials. An embossed pattern is raised against the background, while a debossed pattern is sunken into the surface of the material but might protrude somewhat on the reverse side.
For embossing metal, see Repoussé and chasing.Die materials[edit]
The metals most often used for die construction are zinc, magnesium, copper, and brass. The material used for a specific application depends upon a number of factors.
Document authentication[edit]
A notary public may use an embossed seal to mark legal papers, either in the form of an adhesive seal, or using a clamp-like embossing device, to certify a signature on a document, contract, etc., or cause to become certified through a notary public or bill. Registered professional engineers also use embossing seals to certify drawings, thereby guaranteeing to the recipient that due diligence has been exercised in the design. Government agencies use embossed seals to certify that an important document, such as a birth certificate, court order, etc., is an authentic, original copy, rather than a photocopy that could be altered in the copying process.