This section is from the book "Complete Self-Instructing Library Of Practical Photography", by J. B. Schriever. Also available from Amazon: Complete Self-Instructing Library Of Practical Photography.
Removing Exposed Paper. First, begin by cutting up the paper as perforated on the reel, each exposure being perforated automatically in the reel. Next, place the single sheets in a light-tight box or drawer until you are ready for developing. In the meantime, prepare the roll-holder again for further exposures, by attaching the end of the roll of paper onto the empty spool, and insert the slide to protect it from the light.
Developing And Finishing. The exposed sheets should be developed, fixed, washed and dried without interruption. The developing-room, or dark-room, should be provided with three lights, two of which should be incandescent ruby, and the other may be of ordinary incandescent white light. If the developing is done over the sink, the two ruby lights should be arranged one at each end of the sink. However, if, as outlined, the developing is done on a table at the left-hand end of the sink, then one ruby light should be extended over the table and the other over the center of the sink.
594. The trays should be arranged in regular order. First, place your developing tray to your left, on the table, and next to it one of your larger trays, to be used for acid water after developing. In the left-hand corner of the sink arrange the hypo or fixing tray, and place the washing tray in the sink, next to the hypo tray.
595. The developer may be purchased either ready prepared, or can be made up by yourself. For developing and fixing formulae see Volume IV. A large quantity of the developing stock solution should be made up at a time, as it keeps well, and sufficient developer should be poured into the tray to handle the prints nicely. When quite a number of prints are to be developed, at least two quarts of solution should be employed.
Developing The Prints. Immerse the prints in the developing solution one at a time, face up; then, immediately turn them face down, and again face up. This insures an even covering of the print with the solution.
597. When the print is completely developed place it immediately in tray No. 2, which should be half filled with water containing a few drops of acetic acid, which latter checks the development. The prints should be carefully rinsed in this acid solution for only a second or so, and then immersed in the hypo bath. To avoid stains it is essential that the print be completely immersed in this bath.
598. The formula for mixing the hypo bath is given in Volume IV, and plenty of solution should be prepared. The prints may remain in the hypo until all are developed, but if very large batches are to be fixed not more than one hundred should be fixed at one time, and even then, the prints, to prevent matting together and insuring thorough fixing, should be separated at least twice during the time of fixing. After fixing, place them in a tray containing running water. Handle the prints from one tray to another, using your former acid tray for your second tray in this instance. Two or three changes in this way, with water running in both trays all the while, will wash the prints sufficiently, after which they may be laid out to dry. Gather all the prints in one tray, and stand the tray on end, to drain, for, say, five minutes, thus eliminating all surplus water. The prints are then laid out on the drying racks, which are arranged in the operating-room, as previously described. They may be fanned dry in a few hours, when they are ready for gathering up, to be sent to the proper departments.