Stripping Varnishing

negatives, celluloid, store, kept, boxes and negative

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In some cases the index can be usefully supplemented by a complete collection of actual prints contained in an album or card index file. All or some of the particulars mentioned above (with, of course, the exception of accounts) may then be written at the side or on the back of the print instead of in the register.

490. Storage of Negatives. The most econ omical method of storing glass negatives, and that which requires the least space, is to keep them in the cardboard boxes in which they were originally packed. Each negative should be protected by a wrapper of some on which the series letter and the number of the negative is written, to avoid the negative being scratched, or the retouching, working-up, or title on the negative being rubbed off. These wrappers should be made preferably of translucent paper (crystal paper) so as to allow of the negative being identified without removing it from its wrapper. The boxes should be kept on shelving in the same way that volumes are placed in a book-case, and labels indicating the lowest and highest numbers of the negatives contained therein should be stuck on the side of the box or lid, exposed to view. Apart from the fact that this arrangement of the boxes on edge allows of their being taken out and replaced without disturbing the others, the boxes of negatives suffer the least possible strain, and are therefore less exposed to accidents. Owing to the considerable weight of a fair-sized collec tion of glass negatives, 2 the shelves should not be fixed with brackets nailed to the walls or partitions, but should be supported either by iron brackets (corbels) securely screwed to the wall, or by wooden supports fixed to the wall and resting on the floor, placed close enough together to prevent any appreciable sagging of the shelves.

Similar arrangements could be adopted for storing a small quantity of film negatives, each film being protected by a transparent envelope.' For large collections, boxes made of sheet-iron are employed, in which the envelopes are arranged vertically, in the manner of a card index. Negatives should be stored in a room

which is neither too damp nor too dry.

In Great Britain the storage of celluloid in the form of sensitive film or celluloid negatives is subject to the regulations set forth in " Statu tory Rules and Orders, 1921, No. 1825" (II.M. Stationery Office, London, Edinburgh, Man chester, Cardiff, and Belfast, price id.), under Section 79 of the Factory and Workshop Act.

As regards sensitive films, kept on premises in a quantity which as a rule does not exceed 14. lb., storage in a drawer or cupboard in a private office or other room in which no hand ling of celluloid is done, is officially regarded as complying with the requirement for " safe storage." The regulations in respect to developed nega tives will depend to some extent on the amount of such negatives. Where the latter are of considerable weight, they require to be kept in a fire-resisting store, such as a cabinet or cupboard constructed of fireproof material, e.g. sheet metal, asbestos sheeting, or wood effectively treated to resist flame. This store requires to be of sound construction and is to be kept locked. The door or lid needs to be so arranged that there is no naked light or open fire near at hand. The store should not be situated in a workroom where celluloid is handled, nor on a stair, nor near a door, nor in a passage through which persons might have to pass to escape in the event of a fire. The nature of the contents should be clearly marked on the outside of the store, and a cautionary notice put up prohibiting the use of naked lights. An adequate supply of buckets of water should be kept always available close outside the store, water being the best extin guisher of burning celluloid.

The foregoing recommendations are for general guidance, and are subject to modification, according to the quantity of celluloid, or on account of the design of the building or nature of the processes, at the discretion of the District Inspector of Factories.

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