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Sheet Film Hangers
Figure 10-5.Film developing tanks

Photography (Basic) - Introduction to photography and other graphic techniques
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Figure 10-3.–Sheet film hangers. Figure 10-4.–Roll film processing tank and reel. (fig. 10-3). They are constructed of perforated metal or plastic and channeled to receive and suspend film in solution. This allows the solution to circulate freely over the film surface. Sheet film hangers are used in tank developing and their use is described later in the this chapter. ROLL  FILM  TANKS  AND  REELS Hand processing of roll film is usually done on reels in roll film tanks. The center-feed reel and tanks used most commonly in the Navy are made of stainless steel. The film is wound onto a spiral reel. The reel is then placed  into  a  tank  for  processing  (fig.  10-4). TRAYS Trays used for processing photographic film (roll or sheet)  are  the  same  as  those  used  for  processing photographic prints. They may be made of any material that is not affected by, or cause contamination of, photographic solutions. Most trays used today are made of stainless steel or plastic. SHEET  FILM  DEVELOPING  TANKS Tanks used for developing sheet film come in a variety of shapes and sizes. They are usually made of stainless  steel. To process sheet film in tanks, load the film into sheet film hangers and then place it into the developing tanks of solutions (fig. 10-5). FILM  WASHING  EQUIPMENT Film washing does not require special equipment. Sheet film can be washed in the same type of tank or tray that is used to process the film or in tanks designed for  film  washing. When a tray is used, only one film at a time should be washed. When more than one piece of film is washed at a time, the films will probably rub together and be 10-12







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