Platinum palladium prints are known to fine art collectors for their beauty, archival permanence, and unique, one-of-a-kind print statement. (clydebutcher.com)
Fine Archival Prints for collectors printed from the original negative where possible were produced in house by Carole Callow, a photographic printer of international repute. (leemiller.co.uk)
All archival quality fine prints have been individually made on high quality fibre based paper and are selenium toned for enhanced permanence. (leemiller.co.uk)
Work prints are Non-Archival handmade on Resin Coated (RC) paper, and were printed in house. (leemiller.co.uk)
Digital prints are made from digital images with a wet process, printed on non-archival paper. (leemiller.co.uk)
they therefore enjoy an archival permanence equal to the platinotype, and share with this hand coated process the same characteristics of matt, textured surface and subtle tonal gradation, but with the added enhancement of colour. (scienceandmediamuseum.org.uk)
Gelatin4
To achieve a long lifespan, gelatin silver prints must be thoroughly fixed and washed. (wikipedia.org)
Many other factors play a critical role in the long-term stability of gelatin silver prints. (wikipedia.org)
A Guide to Fiber-base Gelatin Silver Print Condition and Deterioration" (PDF). (wikipedia.org)
High quality Laser Fultone poster print, "Underwater Nude," made under Brett Weston's supervision from the original Gelatin Silver photograph. (photographywest.com)
Selenium1
Toning can increase the longevity of silver-based prints by replacing or coating the metallic silver with more inert metals such as gold, silver sulphide or selenium. (wikipedia.org)
Some black-and-white prints are produced using ink-jet printers, or colour photographic paper using the RA 4 process. (wikipedia.org)
Platinum-palladium prints date back to the 1850s and are one of the earliest and most stable methods of photographic printmaking. (clydebutcher.com)
Fine prints were made in house by Carole Callow, a photographic printer of international repute. (leemiller.co.uk)
However, this embryonic process was never accepted into the repertoire of photographic printing, owing to inherent problems of fogging, excessive contrast and uncontrollable colours. (scienceandmediamuseum.org.uk)
Thus, although the notion of gold printing has been 'in the air' since the first days of photography and gold has found several photographic uses (7) (notably as a toning agent for silver prints), it is only with the aid of modern chemistry that the vigorously oxidising nature of the gold salts can be moderated, and a controllable gold printing process developed. (scienceandmediamuseum.org.uk)
Black-and-white pr1
In general, black-and-white prints using either silver or carbon-based media may last longer than some colour prints. (wikipedia.org)
Preservation1
Print permanence refers to the longevity of printed material, especially photographs, and preservation issues. (wikipedia.org)
Chemically1
The New Chrysotype Process is probably the first chemically novel method of iron based printing to be invented since the end of the nineteenth century (8). (scienceandmediamuseum.org.uk)
Silver1
Images composed of more inert metals, like platinum, palladium and gold are less prone to decay than those in silver. (wikipedia.org)
Indeed, it was the recognition of the chemical difficulties that led both Pizzighelli and Hbl (5) and Abney and Clark (6), in their well-known treatises on platinotype, to discount the feasibility of gold printing. (scienceandmediamuseum.org.uk)
In 1989, as the culmination of six years research, Dr Mike Ware-then lecturer in chemistry at the University of Manchester and an exhibiting photographer-perfected formulae for iron-based gold printing sensitizers which are now fully published (9). (scienceandmediamuseum.org.uk)
Nanoparticle gold also has a very high photometric equivalent ('covering power'), making the medium significantly less expensive than platinumprinting (11). (scienceandmediamuseum.org.uk)
Digital1
Those standards have yet to be extended to digital print output, though the organization has signaled its intent to provide such standards. (wikipedia.org)
Intent1
It is hoped that this extension of monochrome image-making may provide print-makers with a new dimension to explore in matching the colours of their prints to the expressive intent of their images. (scienceandmediamuseum.org.uk)
Quantity1
Any significant quantity of fixer (thiosulphate) left in the print after washing will cause the image to deteriorate over time. (wikipedia.org)
Methods1
This is an attractive alternate to traditional marking methods such as ink stamping, chemical etching, pad printing or mechanical engraving. (goldni.com)
Gallery1
A selection of prints may be viewed at our gallery representatives or by appointment. (leemiller.co.uk)
Made2
Very significant advances in stability were made in case of Kodak prints in 1954, 1958, and in the early 1980s. (wikipedia.org)
These prints are, where possible, made from the original negative. (leemiller.co.uk)
Image4
The rate at which deterioration occurs depends primarily on two main factors: the print itself, that is, the colorants used to form the image and the medium on which image resides, and the type of environment the print is exposed to. (wikipedia.org)
the majority of the deterioration seen in such prints is usually associated with the supports, which are often yellowed and brittle, rather than the actual image. (wikipedia.org)
Much research into image permanence has been carried out by Wilhelm Imaging Research, Inc. Another resource is Aardenburg Imaging & Archives. (wikipedia.org)
The original image is usually sourced from the vintage print or negative. (leemiller.co.uk)
Paper2
For inkjet prints, pigment-based inks last generally longest when used with specific paper types, whereas dye-based inks can be optimal on more types of paper. (wikipedia.org)
Printed from good type, on heavy paper, and substantially bound. (nih.gov)
Time1
The platinum and palladium are mixed one drop at a time, creating a solution that results in a UV-sensitive emulsion. (clydebutcher.com)
Process2
The main advantages are that prints process quickly and dry flat. (leemiller.co.uk)
Each photographer has selected a specific process that best captures and expresses their vision of and feelings for a desired subject which is then revealed and shared via the finished print. (monalogcollective.com)
Hand1
Hand coating means that each print will be unique. (clydebutcher.com)
House1
N OT long since M. Louis Quennessen of Paris (head of the old house of Des Moutis & Co., platinum refiners) directed my attention to an early worker on platinum, Pierre-François Chabaneau, whose name has so far escaped the historians of chemistry that I think it is not even mentioned in any English or German work, and has only appeared in the last edition of Moissan's "Traite de Chimie Minèrale. (wikisource.org)
System1
Since permanence is a hallmark of laser marking, our system is ideally suited to generate a high clarity mark. (goldni.com)
Include1
Environmental factors that hasten the deterioration of a print include exposure to heat, ozone and other pollutants, water or humidity, and high levels of light. (wikipedia.org)