| 摘要 |
<p>A digital printing apparatus comprises a substrate (10) having a surface modified with a plurality of pixels. Each pixel includes a) a cavity (14) having an upper opening which extends below the surface of the substrate; b) a flexible membrane (11) bonded to the substrate surface and covering the plurality of pixels; c) means (20) for maintaining portions of the membrane in a first depressed position over each of the plurality of pixels; and means (36) for selectively elevating the depressed portions of the membrane from the first depressed position to a second elevated position in a selected number of the plurality of pixels.</p> |
