Hours:
Tues. - Fri. - 10 to 6
Saturday - 12 to 5
Thursday nights
until 9pm
1500 Jackson Street NE #443
Minneapolis, MN 55413
Albumen
A positive printing process invented in the 1850’s by L. D. Blanquart-Evrard
in which a contact print is made on paper coated with a solution of egg white
(albumen) and salt, sensitized with silver nitrate and exposed to light.
Contact Print
A contact print, always the same size as the negative from which it was
made, is produced by placing the negative in direct contact with the paper
rather than projecting the image onto the paper through an enlarger. Contact
prints have extraordinarily high resolution, that is, sharpness of detail.
Cibachrome
(dye bleach, Ilfochrome) A positive to positive (reversal) process using three
emulsion layers of silver salts sensitized to one of three colors: red, blue,
or green. The image is formed by selectively bleaching dyes already existing
within the paper. "Cibachrome" is the patented name given by Ilford.
Color Coupler Print
A positive print made from a color negative, involving at least three emulsion
layers of silver salts sensitized to one of three colors- red, green, or blue.
Unlike a dye-destruction print, the dyes are not contained within each layer
prior to exposure, but are made during development by adding dye couplers
which join the silver particles to produce dyes. The result is a full color
positive image formed of the three emulsion layers against a white background.
This process may also be known as Ektacolor print, chromogenic color print,
or Type-C print.
Cyanotype
Sir John Herschel invented the Cyanotype process in 1840. Cyanotype is a printing
process based on the light sensitivity of iron salts. Cyanotypes are considered
to be one of the most stable and long-lasting prints. Herschel, astronomer
and inventor, was also the first to use the terms "negative" and
"positive" to describe the manufacture of a photographic print.
Dye Transfer
In this method of color printing, an original transparency or negative is
projected through red, green and blue filters. These separation negatives
are then projected or contact-printed to make three relief matrices dyed in
cyan, magenta, and yellow dye. Each of the matrices is then brought into registered
contact with a sheet of special transfer paper which absorbs dye. The finished
print is therefore made up of a combination of dye images. Dye transfer is
one of the most permanent color processes.
Gelatin Silver Print
(silver print, black-and-white) The standard, black-and-white photograph printed
on paper coated with gelatin and emulsions containing light sensitive silver
halides/salts.
Giclee
A fine art print created on a digital inkjet printer, including Iris.
Gum-Bichromate Print
A print made by exposing a negative on a paper coated with an emulsion of
gum arabic, potassium bichromate and pigment. Similar to the carbon process,
the emulsion hardens in relation to the amount of light it receives through
exposure, and the unexposed emulsion is washed away.
Half-Tone Print
A photomechanical process in which a photographic image is recorded on a relief
plate that can be printed on a press. The result is an image made of a tiny
dot pattern with larger, more closely spaced dots in darker areas.
Monoprint
A one-of-a-kind, unique print that can not be duplicated exactly because of
intricate manipulation in the printing or handwork in the creation of the
print.
Platinum/Palladium
A printing process in which images are formed in platinum or palladium by
placing a negative on paper sensitized, either by hand or pre-coated, with
a solution of platinum or palladium and iron salts, exposed to light, and
then developed in Potassium oxalate. Platinum/Palladium prints are thought
to be more permanent than silver prints and allow for a very large tonal scale
(numerous tones of gray).
Photogram
A unique photographic print made without a camera by placing objects on a
light-sensitive surface and exposing them to light. The objects appear as
negative silhouettes. A technique commonly associated with the work of Man
Ray ("Rayograph"), Christian Schad ("Schadograph"), and
Laszlo Moholy-Nagy.
Photogravure
A photomechanical process, based on the printmaking technique of Intaglio.
A copper plate is coated with a light-sensitive gelatin tissue, exposed to
a negative, and then etched. The result is a high quality print reproducing
the continuous tones of a photograph.
Pigment Processes
The pigment process is a general term including a variety of different printing
methods which include bromoil, carbon, carbro, and gum bichromate. In all
of these techniques the final image is based in pigment rather than a light
sensitive metal like silver or platinum. Basically a colloid such as gelatin
is made light sensitive with the addition of potassium bichromate which hardens
upon exposure to light in proportion to the amount of light received.
Vintage
A print is considered vintage if the positive image was made from the original
negative by the photographer, or overseen by the photographer, at approximately
the same time the negative was made. This term is used for historical prints.