Liquid Light/Photo Emulsion on Glass Bottle

[mercurye]

Hello all,

I am interested in printing photographs on brown glass bottles (i.e. wine) in the darkroom with liquid emulsion. I have read Mark Scholer Pedersen's method for Silver Gelatin Dry Plate (similar to the Eastman Kodak breakthrough) process here: http://www.alternativephotography.com/silver-gelatin-dry-plate-process/

However, I would like to print a positive from a negative on a dark glass bottle, and therefore I need a white background ("gesso" it). My question is, do I just add chalk/gypsum from NaturalPigments.com or such to the first "subbing" layer of gelatin and chrome alum, or is this the layer that will be lost as the silver emulsion layer sticks to the glass? At least that was my understanding of the Kodak Dry Gelatin plate/paper method.

Alternatively, can I make a gesso with chalk/gypsum and animal hide glue, and then harden it with a formalin solution to make it insoluble, then using the liquid emulsion on top of that? Or is it best if I make my own baryta layer with barium sulfite, and if so could someone tell me how/point me in the direction of some similar instructions.

Thanks in advance,

Austin

 

[Nodda Duma]

Try titanium oxide. IIRC That was the whitener of choice added to emulsion.

 

[Photo Engineer]

Or Baryta (Barium Sulfate) used to whiten many photographic products. Baryta is available from many sources as a thick paste used in radiology.

PE

 

[AgX]

Try titanium oxide. IIRC That was the whitener of choice added to emulsion.

Keep in mind that dependant on pigment type TiO2 shows photo-catalytic effect.

 

[mercurye]

Ok, so I add Baryta or Titanium Oxide to the Gelatin subbing layer, with chrome alum as a hardener, wait to dry, add emulsion layer, and develop normally? Any extra hardening/adhesives needed?

 

[Photo Engineer]

Glass to gelatin adhesion is best achieved by using Chrome Alum.

PE