MORE INFORMATION ON LANTERN GLASS SLIDES....
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Lantern slides, which are transparent
images on glass, were often used in the nineteenth and early twentieth
centuries for entertainment and educational purposes. The glass slides
were able to be projected on to a screen or wall by a machine called the
“Magic Lantern or Sciopticon, both early forms of slide projectors. The
images were positive, and the emulsion was finished with a mat layer and
a protective glass cover. The slide was then sealed on all four ends
with black paper tape. |
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Lantern slides can be printed
in two different ways. The first is the
contact method, which included placing the
negative directly on the light sensitive
glass. This method required that the
negative was already the correct size in
order to produce the 3.5 by 4 inch slide
For negatives larger than this, the
camera method was used to print the slides. The negative and glass
would be placed in the camera and printed by exposing the glass to
daylight or artificial light. After exposure the image was developed
with chemicals. |
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Once the plates dried from the
printing process, they were often hand-colored using tints. The color
finish was then protected with a mat and glass cover. |
Information from:
Bellis, Mary.
“Magic Lantern – Slide Projector.”
http://inventors.about.com/od/mstartinventions/a/magic_lantern.htm,
(accessed April 24, 2008).
Ritzenthaler,
M.L and Diane Vogt-O’Connor. Photographs: Archival Care and
Management. Chicago: Society of American Archivists, 2006. |
