With the introduction of the Eastman Film Developing Holders and Loading Fixture, it becomes a simple matter to develop, fix and wash large quantities of Eastman Portrait Films by the tank method. They may also be dried while they are in the Developing Holders, thus carrying the films through the entire process from the time they are taken out of the holders until the negatives are dry, without the necessity of touching the wet film.

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Eastman Film Developing Holder

As with the introduction of the film itself, these devices were not made ready for the market until they had been thoroughly tried out, both by ourselves and practical workers who are now using the films in large quantities.

As a consequence, they embody the results of much thought and practical experience and will simplify the developing of films in large quantities in tanks, insuring negatives free from finger marks, scratches and stains.

The Eastman Film Developing Holder consists of a strong brass wire frame, heavily nickeled and of such shape that the upper bar of the frame may rest in notches on the edge of the tank. At each of the four corners of that part of the frame to which the film is attached are metal clips which hold the film in position. To the center of the top bar is attached a flat piece of metal, curved at the top to form a hook. This acts both as a handle and a hook by which the frame containing the film may be hung up to dry.

The Eastman Film Loading Fixture is a very simple but ingenious device for loading the Developing Holders with the films. It consists of a folding hinged frame, so made that, when open, the Developing Holder slips over a raised portion of the wooden bed of the frame. When closed, the back of the frame presses against the four metal clips, holding them wide open.

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Eastman Film Loading Fixture - Film Being Inserted in Holder

The film is then slid into an opening at one end of the fixture, the edges of the film passing smoothly between the open jaws of the four clips without touching them. As the frame is opened, all four clips, simultaneously released, grip the film and hold it firmly in the holder. The entire operation takes but a few seconds - much less time than it takes to explain it - and several dozen films may be loaded into the Developing Holders in a few minutes.

Tanks may very easily be made to use with the holders for developing, fixing and washing the films, and, as it is not necessary to remove them from the holders until they are dry, this method of handling films will undoubtedly meet with the approval of the majority of film users, some of whom have already adopted and are now using the Eastman Film Developing Holders, Loading Fixture and large tanks for solutions.

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Removing the Loaded Developing Holder

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By E. D. Core New York, N. T.

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A. B. C. Dimensions of above Solution Tanks in nine sizes Working blue print free on request

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The accompanying illustrations will give a good idea of the most approved method of construction of wooden tanks, which may be made by any carpenter. The table gives the ABC dimensions for making any one of nine tanks from the drawings. A large blue print of working drawings, including also drawing and dimensions of a cover for any of these tanks, will be furnished free of charge.

The large tanks may be used for developing smaller films by placing a notched stick across the tank so the ends of the smaller holder will rest on the stick and the end of the tank. The larger films are placed in the other end of the tank in the usual way.

The developer which has been found most suitable for the tank development of films, and which can always be depended upon to yield negatives of the best printing quality with either plates or films, is Pyro with Potassium Metabisulphite as a preservative. The following formula is recommended for tank development of Eastman Portrait Films:

Pyro Tank Developer

Stock Solution A

Water................... 16 oz.

Potassium Metabisulphite...................70 gr.

Pyro...................1 oz.

Potassium Bromide...................8 gr.

Stock Solution B

Water...................16 oz.

E. K. Co. Sulphite of Soda...................1 3/4 oz.

Slock Solution C

Water................... 16 oz.

E. K. Co. Carbonate of Soda ...................l 1/4 oz.

For tanks of any size, compound the developer in the following proportions; A-5 oz., B - 5 oz., C - 5 oz., Water 1 gallon. Temperature 65°. Develop 15 minutes.

As the condition of water varies in different localities, it may be found necessary in some instances to increase the amount of Sulphite of Soda to reduce the amount of color in the tank developed negative. A trace of color is necessary to good printing quality, but too much color will give prints of too great contrast.

We specify E. K. Co. Sodas because they are economical to use and their strength and quality can always be depended upon. If other brands of desiccated Carbonate of Soda are used, a greater quantity will be required. If crystal sodas are used, take about three times the quantity of Carbonate and double the quantity of Sulphite.

THE PRICE

Eastman Film Developing Holders

5x7................... $ .25

6 1/2 x 8 1/2...................25

8x 10...................30

Eastman Film Loading Fixture

5x7................... $1.00 6 1/2x 8 1/2...................1.10 8 x 10...................1.25