| 摘要 |
The matrix (1a) comprises a printing frame in which is tensioned a sheet (1b). Fixed to this sheet is a further sheet (1c) encompassing a printing pattern. The cleaning device can remove this latter sheet where the printing frame, during cleaning or removal, works in conjunction with fixtures (2). The frame, together with its fixtures, can be rotated (3,3') so that one side (1a') of it can face in one direction or the other. |
