| 摘要 |
A screen frame (24) is detachably connected to a support frame structure (22,124,134) by locator pins (46, 118) and locator pin sockets (56,112,136). An elongated support arm (26) supports either a light box (34) or a work piece support (36) in a proper position relative to the print frame (24). The light box (34) and the work piece support (36) are interchangeable on the support arm (26).
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