Method and apparatus for drying photographic material
AssigneeCiba-Geigy Corporation
InventorCharles C. O. Goodall
Life of this patent
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Abstract
A method of drying processed polyethylene coated photographic paper in an enclosed drying chamber through which the exposed and processed polyethylene coated photographic paper bearing an image on one side of its sides is made to travel. This comprises directing radiant heat onto the non-image bearing side only of the paper as it travels through the drying chamber and as a stream of air flows over the image bearing side of the photographic paper. The advantage of this invention over drying apparatus at present commercially available is that less heat energy is required to dry large photographic sheets.
Claims12
A method of drying processed polyethylene coated photographic paper in an enclosed drying chamber through which the exposed and processed polyethylene coated photographic paper bearing an image on one side thereof is caused to travel, which comprises directing radiant heat on the non-image-bearing side of the paper as it is caused to travel through the drying chamber and simultaneously causing a stream of air to flow over the image-bearing side of the photographic paper.
An apparatus for drying polyethylene coated photographic paper which comprises an enclosed drying chamber having an open support therein for supporting the photographic paper in its passage through the drying chamber, a source of radiant heat located solely on the side of the support remote from the side which supports the photographic paper, together with means for directing the radiant heat on to the under side of the open support, and means for causing at least one stream of cool air to flow downwards towards the topside of the support, and at least one pair of nip rollers for driving the photographic paper into the apparatus and a pair of nip rollers for driving the photographic paper out of the apparatus.
Dependencies are inferred from the claim text.