| 摘要 |
A method and apparatus for the manufacture of microporous pre-inkable stamps, consisting in selective closing of pores by selectively heating the surface of a microporous thermo-plastic blank printing plate (2) which is mounted by gluing or melting along its perimeter into its case, in which selective heating is performed by means of light radiation or a thermal head and simultaneously with the selective heating the working surface of the blank printing plate is pressed against a supporting surface with the pressure being at least 0.2 MPa, which comprises the following steps: into the cavity of the printing plate's case some stamp ink is poured, letting it cover the rear surface of the printing plate, the printing plate's case is fixed together with the printing plate against the supporting surface and the hydrostatic pressure inside the cavity in the printing plate's case is raised, for example, by way of connecting the latter to a source of compressed air. To avoid the outward deformation of the printing plate's case under higher pressure, and for fixing the printing plate's case against the supporting surface, a hollow mould is used that supports the printing plate's case from above and at the sides. |
