Archival Inkjet	An inkjet print produced using archival inks.
Archival Pigment Dyes	An inkjet print produced using archival pigment dyes.
C-type	Traditionally produced from negative film rather than more recently from transparency and projected digital images, C-type or ‘Chromogenic’ prints have three layers of photographic emulsion containing silver salts which are sensitive to differing wavelengths of light - blue, green and red. The light falling on the print sensitises each layer differently depending on the make up of the light. The exposed print is then developed using chemicals that cause correspondingly coloured dyes to form in each of the layers.
Carbon	A non-silver, permanent photographic print produced by exposing a sheet of paper coated with gelatin, carbon black and potassium dichromate against a negative, the gelatin hardening in proportion to the amount of light passing through the negative. The excess pigment is washed away leaving the final image. The print is dense, glossy black or deep rich brown tonality, often with slight relief contours thickest in the dark areas.
Carbro	A print made from three bromide transfer prints, stacked in registration to produce a single coloured image. Each transfer print is pigmented to correspond to one of the three separation negatives, which are produced by photographing the subject through red, green and blue filters.
Digital C-type	Digital prints made with regular photographic papers and chemicals but instead of an enlarger and negative, high intensity lasers expose the digital files to the photo paper (see C-type).
Dye transfer	Similar to the carbro process, this involves the use of at least three colour separations, usually produced from a colour transparency original. The colour separations are printed on thick, gelatinous film positives known as matrices which are then soaked in corresponding dyes of cyan, magenta, yellow and often black. The matrices are then printed in registration in daylight on a fibre based paper similar to photographic paper, but not light sensitive, transferring the dyes to the paper. The process produces rich colours.
Epson 9600 archival ink	An inkjet print produced on an Epson 9600 printer using Ultra Chrome archival inks.
Giclée	These prints are produced from a digital file created using a digital camera or scanned print, transparency or negative, rather than from an original negative. A digital printing machine sprays ink in high precision onto paper to produce an image from the digital file. These are similar to domestic computer printers, but professional fine art prints use special high quality archival papers and inks.
Gum	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.
Ilfocolor HighGloss	A c-type print produced on Ilfocolour High Gloss paper. The finish is very glossy, usually with dense colours.
Inkjet	This process involves using an image originated from a digital camera, scanned print, transparency or negative, rather than from an original negative. A digital printing machine sprays ink in high precision onto paper to produce an image from the digital file. These are similar to domestic computer printers, but Professional Fine Art prints use special high quality archival papers and inks that suit those papers. Inkjet printers can print onto a variety of materials, although not as broad a range as is possible with Iris printers.
Iris	A type of digital inkjet printer that allows photographic quality images to be printed onto a wide range of materials (such as canvas and fine art papers). This can produce a richness and depth of colour not possible with traditional photographic papers.
Lightjet	Lightjet prints are NOT inkjet but photographic prints exposed by RGB lasers to produce continuous tone photographic prints from digital files. Inkjet or Giclée prints are made up of dots, and are not continuous tone whereas lightjet prints have no dots at all.
Lith	Lith prints are produced by over-exposing photographic paper with an image and then under developing it in a developing bath. It is difficult to produce identical prints using this process as the chemistry continues to develop and timing is difficult to judge. Images tend to be moody, being of higher contrast and fairly grainy. Differing papers and the strength and age of chemistry will affect the tones achieved.
Platinum	A contact print made through a process in which a paper is sensitized with a solution of platinum and iron salts and developed in potassium oxalate. Platinum prints are popular because of their permanency and their wide range of soft grey tones.
Quad inks	An inkjet print produced from Lyson’s ‘Quad’ inks which use at least 6 different tones of black to produce the final image.
Silver Bromide	A variation of the silver gelatin silver print, silver bromides share the features of all silver gelatin prints, giving deep rich blacks and crisp whites on a high gloss paper, as well as having good archival properties. Compared with silver chlorides or chloro-bromides, they have a neutral, deep black tone.
Silver Gelatin	Introduced in the 1870s, this is the most common of all traditional photographic printing processes in which paper is coated with gelatin that contains light sensitive silver salts. This is the standard contemporary black and white print method used today. Like Silver Bromide prints these prints are highly archival.
Small Gamut	An inkjet print produced using Lyson’s ‘Small Gamut’ inks which produce true archival monochrome prints in a wide range of subtle tonal shades.
Thiocarbamide	This is a photographic print that has been toned with thiocarbamide toners. These are sepia toners of the odourless variety and are nearly always sold with an additive (sodium hydroxide) as a variable sepia toner. This means that depending on the amount of additive used, the print colour can be varied from yellow through sepia, to deep rust or chestnut-brown.
Ultra Chrome	An inkjet print produced using Epson Ultrachrome inks.