Improved Photographic Toning and Fixing Sheets of Absorbent Material
23,809. Bromhead, S. S., [Chemische Fabrik Helfenberg Akt.-Ges.]. Oct. 31. Toning; fixing.-Consists in saturating sheets of porous material, such ae blotting-paper, asbestos, or the like, with a combined toning and fixing solution, and then drying the sheets, which are thus kept till required for us...
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| Format: | Patent |
| Sprache: | eng |
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| Zusammenfassung: | 23,809. Bromhead, S. S., [Chemische Fabrik Helfenberg Akt.-Ges.]. Oct. 31. Toning; fixing.-Consists in saturating sheets of porous material, such ae blotting-paper, asbestos, or the like, with a combined toning and fixing solution, and then drying the sheets, which are thus kept till required for use. The bath is prepared by immersing one or more of these sheets in water. The constituents of two preferred solutions are given in the Specification. |
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