| 摘要 |
<p>This invention relates to a method for etching a sheet of glass (V) with acid, comprising the following phases: taking a printing plate (22, 22a), a surface of which has corrugations (22') or relief patterns (22''); depositing a coating of acid of uneven thickness on said printing plate (22,22a), said coating of acid being thinner along the peaks of said corrugations (22') or relief patterns (22'') and progressively thicker in the recesses of said surface of the printing plate (22,22a); putting said sheet of glass (V) in contact with said surface of said printing plate (22,22a) on which the coating of acid is deposited, so that the amount of acid which comes into contact with the surface of the sheet of glass (V) is different from one area to the other of said surface. <IMAGE></p> |
