Photograph printing exposure plate - has base accommodating sensitive paper or film covered by slide with window

摘要

The photograph-printer producing them on sensitive paper or film, comprises a base (2), inside which a strip of material is fitted, this being covered by a slide with a window (4). There can be a movable shutter on the window, the slide being moved on the base to bring the window above the part of the paper to be exposed. The shutter is merely opened while exposure is taking place. Each photograph can be framed on the shutter, which is white, when closed.