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.
Placing Print And Tissue In Contact. Provide a tray containing clear, cold water, into which place the bromide print and allow it to remain until it becomes thoroughly limp. Next, remove the print from the tray of water and place it face up on a ferrotype plate or sheet of glass, which should be as level as possible. Pour sufficient clear, cold water over the face of the print to remove all air-bells that may have collected, and examine carefully to see that none remain on the surface of the print. The sheet of pigment tissue should now be removed from the sensitizing solution, drawing it over the edge of the tray as quickly as possible to remove surplus solution, and then bringing it into contact with the print. Commence at one edge and lay the print down quickly. When in position, go over the back of the tissue with a squeegee or print roller to insure perfect contact.
386. It will be found a great convenience to provide a piece of ordinary table oil-cloth upon which to place the sheet of pigment tissue, face up, before bringing into contact with the print. The back of the tissue will adhere to the oil-cloth during the operation of laying it on the print, and will serve as a protection for the tissue when going over it with the squeegee or print roller. The print and tissue must not slip during the operation of squeegeeing into contact, or a double image will result.
Development. When contact has been secured, place tissue and print between dampened blotters to await development. Up to this point the process is the same for either the transfer or non-transfer process. After the print and tissue have been in contact twenty minutes, remove to a tray containing clear water of a temperature of 105° Fahr. In a few moments the pigment will begin to ooze from the edge of the print.
388. The paper backing of the pigment tissue should now be removed from the tissue with a steady, unbroken pull on one corner, leaving the print in the water and discarding the removed tissue backing. Allow the print to remain in the warm water, face down, until all of the soluble gelatin and coloring matter have been removed. The print may be gently raised from the warm water from time to time, to facilitate the removal of the soluble pigment by draining. Care should be taken to avoid the collecting of air-bells on cither side of the print during immersion.
389. After the print has been freed from all the soluble gelatin, it should be removed to a tray of clear water of about the same temperature as the developing water (105° Fahr.), and allowed to remain for about ten minutes to clear up the last traces of soluble gelatin pigment.
Removal Of Silver Image. The print is next rinsed in cold water and placed in the following bath, which removes the silver image under the pigment image. Make up two separate solutions:
Potass. Ferricyanide .................................
391. Place the print in a solution composed of A, and as much of B as will color the solution a strong yellow color. Allow the print to remain in this bath ten minutes, or until all the black patchiness has disappeared. After the underlying image is thoroughly bleached out, the print should be washed in running water for fifteen minutes, to remove all traces of the reducing solution, and then suspended to dry.
The Transfer Process. (No. 2.)
392. In this process the image impressed upon the pigment tissue by contact with the print is transferred to another support, leaving the original print available for further transfers, when re-developed, as described later herein.
393. In the transfer process cold water is used instead of hot for separating the tissue from the print.