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Transferring a Template Photographically

IP.com Disclosure Number: IPCOM000098927D
Original Publication Date: 1958-Dec-01
Included in the Prior Art Database: 2005-Mar-08
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Lindquist, RM: AUTHOR [+2]

Abstract

To provide an outline on stock material so that the stock may be cut out on the outline, a photographic process is used to transfer the desired outline to the stock from a stencil or a photographic negative.

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Transferring a Template Photographically

To provide an outline on stock material so that the stock may be cut out on the outline, a photographic process is used to transfer the desired outline to the stock from a stencil or a photographic negative.

The stock is coated with photosensitive triphenylmethyl leuconitrile which is sensitive to ultraviolet light and insensitive to visible light. One example of a suitable photosensitive material is a solution of 4 grams of pararosaniline leuconitrile in 100 milliliters of methanol. The image of the desired outline is then projected by ultraviolet light onto the coated stock material to produce the desired outline without the use of developing baths. The stock is then machined in accordance with the outline.

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