Sandwich Printing

Sandwich printing

Sandwich printing uses the same method as photograms. However, instead of exposing light to objects over light sensitive paper, we use film to filter light to allow the image from the film to appear onto the light sensitive paper.

Method:
1) The Enlarger must be prepared before the light being exposed. Tasks that must be completed before:
- The height of the enlarger head must be high enough so that the light covers the same size as the chosen piece of light sensitive paper.- The aperture should be set to f/8.- The time should be set to 3 seconds for the test strip.
- The Magenta setting should be set to 40.

 2) Take out the film carrier and place two or more chosen negatives into the correct place. Then put the carrier back into the enlarger head.

 3) Use a measuring board and set it to the size of the light sensitive paper.

 (Do not have  the paper nearby yet)

 4) Turn the enlarger head on so you can focus the image using the focus knob. Once it is in focus, turn the enlarger head off.

 5) First, you need to do a test strip. Find a thin piece of light sensitive paper and place it shiny side up on the base board. Make sure that the space where the paper is will be crowded, so you can see how much time is needed easier.

 6) Expose the test strip for 3 seconds. Then repeat this using a board to create intervals along the paper.

 7) ) The test strip then needs to be processed in the chemicals in this order:- DEVELOPER: Continuous agitation for 2 minutes (Emulsion side up)- STOP BATH: 30 seconds (Emulsion side down)- FIXER: 5 minutes (Emulsion side down)- WASH: 10 minutes in cold running water. When assessing the strip, each change in colour represents 3 seconds. Add the seconds up until the test strip is black. This is how you find the final exposure time. 
8) Using a full piece of light sensitive paper, and the chosen exposure time you can now create a finalsandwich print.