| 摘要 |
1,246,877. Printing cylinders. INTERNATIONAL BUSINESS MACHINES CORP. 12 March, 1969 [13 March, 1968], No. 12909/69. Heading B6C. A printing cylinder 300, Fig. 3, bearing an image 304 in intaglio is also surfaced with regular latticed depressions 301 so that liquid ink applied to the surface is evenly distributed by centrifugal forces and surface tension of the ink when the cylinder is rotated. The cylinder 200 is used in an apparatus comprising a valve controlled ink reservoir 203, a pad 206 and an impression cylinder 207. |
