(57) correcting device for use, for example, for masking and allowing overprinting of
errors on a typescript or the like is disclosed comprising a light-transmitting backing
release sheet (10), with areas of masking material (12) carried on one face of the
backing release sheet (10), the release sheet being of larger overall area than the
overall area of said masking material (12). Each area of masking material (12) is
adhesive, under pressure, on its face remote from the backing sheet (10), whereby
by placing the release sheet over an area of a receiving sheet of which an area is
to be masked, so that the masking material is disposed between the release sheet and
the receiving sheet, and applying pressure over the area of the masking material on
the face of the release sheet remote from the masking material, the area of masking
material can be transferred to the receiving sheet.
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