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Topic: Photographic fixer

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	ideo.com :: Our Work :: Photochemical Recycling System
		After film is exposed, it is bathed in fixer, which causes the unexposed silver crystals to fall away from the film.
		The fixer can be used until it becomes saturated with silver; it is then thrown away, often poured directly down drains.
		PRS developed a method to separate all the silver from the fixer, allowing it to be completely reused.
	www.ideo.com /portfolio/re.asp?x=50057 (234 words)

	Joseph Bellows Gallery - Glossary
		Exhausted fixer was a popular toning bath for both salted paper and albumen prints during this time and produced a variety of tones from red, through sepia and bistre, to deep purple depending on the length of toning, which ranged from an hour or two to as long as two or three days.
		The photographic process invented by William Henry Fox Talbot in September 1840, in which paper impregnated with silver iodide is sensitized by an aqueous solution containing silver nitrate, acetic acid, and gallic acid, exposed in the camera, and then developed as a negative with the same sensitizing solution.
		In the process that came to be modified by photographers several years after Archer's publication, a mixture of ammonium or potassium and collodion was poured onto a glass plate, the coated plate was immersed in a bath of acidified silver nitrate for about three minutes and then withdrawn and exposed in the camera.
	www.josephbellows.com /glossary (4772 words)

	Photographic fixer - Encyclopedia, History, Geography and Biography
		Photographic fixer is a chemical used in the final step in the photographic processing of film or paper.
		The fixer removes the unexposed silver halide remaining on the negative or photographic paper, leaving behind the reduced metallic silver that forms the image.
		Fixer is used for processing all commonly used films, including fl and white films, colour negative films (C41), colour reversal films (E6), and chromogenic films.
	www.arikah.net /encyclopedia/Photographic_fixer (340 words)

	Photographic fixer - Wikipedia, the free encyclopedia
		Photographic fixer is a chemical used in the final step in the photographic processing of film or paper.
		The fixer removes the unexposed silver halide remaining on the negative or photographic paper leaving behind the reduced metallic silver.
		Fixer is used for processing all commonly used films, including fl and white films, colour negative films (C41), colour reversal films E6, and chromogenic films.
	en.wikipedia.org /wiki/Photographic_fixer (321 words)

	fixer@Everything2.com
		Fixer is one of the key photographic chemicals, nearly always almost straight sodium thiosulfate or ammonium thiosulfate.
		Putting the film/paper through fixer is one of the last stages of development, and until processing the material through the fixer it is imperative to keep the material away from light.
		For this reason, among others, the fixer is not often part of the crew unless the crew owns the town: that is, they have influence enough over the authorities and the city in general that they can run their game with relative impunity.
	everything2.com /index.pl?node=fixer (698 words)

	Microfilm Services Group \| Processing Silver Microfilm
		Fixers with a pH equal to 4.9 are easier to remove during washing.
		Fixers for shallow tank units are usually acidic to neutralize developer carry-over and to facilitate washing.
		Fixers formulated for deep tank units often lack the acid because of the rinse available between developer and fixer.
	home.earthlink.net /~fyiglover/articles/silver_microfilm.html (3765 words)

	Science Fair Projects - Photographic fixer
		Most fixers are based on the thiosulophate ion especially Ammonium thiosulphate.
		The fixer removes the unexposed silver halide remaining on the negative or photographic paper leaving behind the reduced metallic silver.
		One disdvantage of the use of thiosluphate as fixers is their ability to dissolve elemental silver at a very slow rate.
	www.all-science-fair-projects.com /science_fair_projects_encyclopedia/Photographic_fixer (432 words)

	Photographic developer - Wikipedia, the free encyclopedia
		In film developing, photographic developer (or just developer) is a chemical that makes the latent image on the film or print visible.
		Some photographers add a pinch of sodium sulfite before dissolving the metol to prevent oxidation, but large amounts of sulfite in solution will prevent metol from dissolving.
		In the early days of photography, a wide range of developing agents were used, including Chlorohydroquinone, ferrous oxalate, hydroxylamine, lactate of iron, ferrous citrate, Eikonogen, atchecin, resorcinol, antipyrin, acetanilid and Amidol (which unusually required midly acidic conditions).
	en.wikipedia.org /wiki/Photographic_developer (1369 words)

	Fixer Guide (Site not responding. Last check: )
		Fixer (comics) 1: The '''Fixer ''' is a name used by two villain ous fiction 3: d Daredevil (comics)Daredevil to do so.
		The Fixer had a fatal heart attack when confronted by D 5: the Fixer and Zemo were then transferred into the Fixer 's original body, although Zemo's mind was soon tr
		Dalton Trumbo 37: '' The Fixer* '', 1968
	www.witchware.com /File/6813-Fixer.Guide.Html (475 words)

	Highbeam Encyclopedia - Search Results for photographic
		In 1829, Daguerre and Niepce invented the daguerreotype, an early photographic process in which a unique image is produced on a copper plate without an intervening negative.
		He aspired to be a painter but at 26 took a job designing photographic covers for Vogue and soon was established as a fashion photographer.
		Photographic Films, Single Use Camera Films, Photographic Paper and Photographic Chemicals Are the Product Segments For the Photographic Supplies Market Read More inside Global Strategic Business Report 2006.
	www.encyclopedia.com /SearchResults.aspx?Q=photographic&StartAt=51 (704 words)

	Employment news for Fixer (Site not responding. Last check: )
		White House fixer Karl Rove is in a fix Oct 23, 2005 As masters of the fl political arts go, the 54-year-old Karl Christian Rove outwardly cuts a pretty modest figure.
		Berlin fixer takes over at foreign ministry Oct 14, 2005 But Mr Steinmeier's intellectual skills and discreet charisma, plus his track record as Mr SchrÃ¶der's political fixer, mean he is well placed to forge common...
		Consumer problems have a Fixer Nov 9, 2005...why The Herald News, in cooperation with reporter Stephanie Zimmermann of the Chicago Sun-Times, will be running her consumer advocacy column, called The Fixer...
	www.jobtitles.net /F/Fixer.html (2815 words)

	Effluent precipitation and neutralization chamber - Patent 4608177
		Thereafter, a "fixer" is applied to the film which dissolves and carries away the silver emulsion not converted to metallic silver.
		It is a common practice to recover the silver in the fixer solution by replacing the silver ions with iron in known chemical reactions.
		The developer and fixer enter the chamber 1 by means of vertical tubing sections 17 and 21, respectively, and they flow into mixing cylinder 29 where they are partially mixed, thereby causing some iron in the fixer to precipitate.
	www.freepatentsonline.com /4608177.html (2838 words)

	Clearfix Alkaline Fixer
		This fixer is designed to provide high quality images with a short fixing and washing time, and will not bleach the image when materials are overfixed.
		However, some photographers prefer to remove this tint so that the negatives are easier to inspect on a light box, and high quality prints are obtained with the shortest possible printing exposure.
		The fixer capacity is indicated as number of 80 square inch materials in each liter of working strength fixer.
	www.digitaltruth.com /store/silvergrain-fixandwash.html (3770 words)

	UI Central Microscopy Research Facilities
		Photographic images are the final output of any electron microscopy project.
		Photographic paper has the same components as film with a base material of resin coated paper.
		The latent image is a record of the portions of the emulsion that have been exposed to electrons.
	www.uiowa.edu /~cemrf/methodology/photo/index.htm (644 words)

	Photographic fixer - Definition, explanation
		Photographic fixer is a chemical used in the final step in the photographic processing of film or paper.
		Fixer is used for processing all commonly used films including fl and white films, colour negative films (C41), colour reversal films E6 and chromogenic films.
		One disdvantage of the use of thiosluphate as fixers is their ability to dissolve elemental silver at a very slow rate.
	www.calsky.com /lexikon/en/txt/p/ph/photographic_fixer.php (354 words)

	Projection Crystallography and Micrography with Digital Cameras
		With the advent of digital cameras the process of using an enlarger as an improvised low-power transmission microscope merits to be revisited as there are many benefits to be derived from using the digital process for the capture of images under such a "microscope" but there are also potential pitfalls to be aware of.
		If one has an "improvisators" mind, one of the major reasons for using a photographic enlarger as a microscope, or macroscope, is that most such darkroom instruments are being discarded in favor of digital scanners and printers and so they are becoming available on the used market for pennies on the dollar.
		This can be easily done by making a photograph as indicated below and noting the limits of the image as recorded by the camera and identifying these same limits while looking at the projected image of the subject being photogrpahed as it looks under the enlarger while the focusing/composing block is in place.
	www.rit.edu /~andpph/text-digital-proj-crystals.html (1695 words)

	Photographic Chemical Descriptions
		Photographic grade acetic acid is 28% because glacial acetic acid cannot be added to sodium sulfite without decomposing the sulfite to form sulfur dioxide gas.
		Photographic Formulas: Copper Print Toner, Red Toner, Two Bath Redevelopment Toners.
		Table salt is sodium chloride to which has been added a free-flowing agent (about 1% calcium silicate or magnesium carbonate), an anti-caking agent (sodium ferrocyanide), an iodizing salt (about 0.01% potassium iodide or sodium iodide), and a stabilizer for the iodine (often 0.1% sodium carbonate and 0.1% sodium thiosulfate).
	www.jackspcs.com /chemdesc.htm (9672 words)

	Image Deterioration in Albumen Photographic Prints
		The level of fixer exhaustion is expressed as the number of 8 x 10 inch albumen prints fixed in the bath prior to the fixation of the experimental samples for incubation.
		The flening associated with the use of exhausted fixer may be the result of a partial conversion of the image to silver sulfide or the result of an enlargement of the image grains from a deposition of silver on the image from silver-thiosulfate complexes.
		Loss of highlight detail during high humidity incubation was worse for the fresh fixer samples than for the moderately exhausted fixer samples; at very high levels of exhaustion highlight detail loss during 95% RH incubation exceeded that of the fresh fixer samples.
	albumen.stanford.edu /library/c20/reilly1982.html (3101 words)

	Used Photographic Fixer Sampling
		BACKGROUND: Photographic fixer removes the unexposed silver compounds from the film during the developing process.
		The spent fixer can have as much as 2000-3000 parts per million (ppm) of silver.
		SILVER RECOVERY UNITS: Silver recovery units are used to reclaim the silver from the used fixer waste stream.
	chppm-www.apgea.army.mil /hmwp/factsheets/fixer.html (745 words)

	Darkroom - Wikipixel
		A darkroom is a given space, usually a separate area in a building or a vehicle, that is made dark so as to allow photographers to use light-sensitive materials to develop photographs and film.
		Due to the relative complexity involved in processing colour film (see (C-41 process) and printing color photographs, and to the rise of first Polaroid technology and later digital photography, darkrooms are quickly decreasing in popularity amongst both the amateur and professional class.
		It is during this initial exposure that the photo can be modified, mostly by burning (giving more light to specific parts of an image by exposing it while blocking light to the rest) and/or dodging (reducing light to a specific part of an image by blocking light to it).
	wikipixel.com /index.php?title=Darkroom&printable=yes (377 words)

	Crash course
		Afterwards, the photographic screen box has to be removed from the camera casing, the film compartment will be attached, and the pin hole needs to be closed.
		When the photographic paper or film material has been stored away in its light-proof packaging the camera is ready for taking its first picture.
		The fixer process should be finished after 5-10 minutes when gently rocking the photographic fixer dish.
	www.lochkamera-versand.de /html/crash_course.html (822 words)

	[No title]
		To complete the photographic emulsion we need something which we can apply to the paper but which will be impervious to water once it is dry.
		If you are looking for a household chemical to use as a photographic fixer, clear household ammonia will work better than salt.
		But the vast majority of photographs at the time of writing continue to be based on the fundamental principles of silver reduction first explored by Herschel, Daguerre, and Talbot.
	cavemanchemistry.com /cavebook/chphoto2.html (1633 words)

	Part 1: How to Improve the Quality of Photographs for National Register Nominations, National Register of Historic ...
		Until the invention of cameras and photographs, followed by the development of a practical way to print photographs in newspapers, the reading public pictured an event with the aid of an artist's rendering.
		When photographer Matthew Brady exhibited photographs of corpses on the battlefield in 1862 at his New York City gallery, the public saw the gruesome realism of broken bodies for the first time.
		Once the film was used up, the photographer mailed the camera with the film still in it to the Kodak factory where the film was removed from the camera, processed, and printed.
	www.cr.nps.gov /nR/publications/bulletins/photobul/pt1.htm (1651 words)

	photographic fixer (Site not responding. Last check: )
		Abacci > Abaccipedia > ph > photographic fixer
		Sorry, "photographic fixer" still seems to be on our 'things to do' list...
		A study of the low current density electrolysis of ammonium thiosulfate fixers
	www.abacci.com /wikipedia/topic.aspx?cur_title=photographic_fixer (44 words)

	Lumiere Photo Photographic Chemicals / Fixer
		Ilford Rapid Fixer is a fine quality, non-hardening, rapid fixer for all brands of film.
		Kodak Fixer is a general-purpose hardening fixer for films, plates and papers.
		Kodak Rapid Fixer is a rapid-acting hardening fixer for papers and films.
	www.lumierephoto.com /index.php?cPath=86_96 (90 words)

	Photographic Chemistry
		Almost all fl and white photographic paper commercially available today is made from two main ingredients: silver nitrate and a halide (sodium chloride and/or potassium bromide.) The halide and other ingredients (i.e.
		The fixer makes the print permanent - one can spot a print that was not fixed properly by noticing that it has faded and the white areas have turned brownish.
		A hardener is usually also present in the fixer to prevent swelling of the emulsion during subsequent washings as well as to make it more durable overall.
	www.duke.edu /~jmw22/photogchem (1454 words)

	Silver recovery method (Site not responding. Last check: )
		In the processing of X-ray and photographic films, fixer baths are used to remove silver halides from the film, and such silver compounds remain in solution in the fixer.
		In operation of the silver recovery apparatus 10, new fixer chemicals are placed in the fixer tank 12 and pumped through the collection cell 20 by the pumps 13 and 32.
		Also, the lifetime of the fixer bath is extended, as is the archival life of the film processed using the fixer chemicals.
	www.sacnewsmonthly.com /invent/barge-carrying_vessel/silver_recovery.html (3660 words)

	Photographic fixer : Photographic fixer
		'''Photographic fixer''' is a chemical used in the final step in fl and white film or paper development.
		The fixer removes the unexposed silver remaining on the negative or photographic paper.
		Effectively, the fixer neutralizes the further developement of the negative or paper.
	www.gogeeky.net /title/photographic-fixer (85 words)

	City of Boulder, Colorado - Silver Management Program
		The primary source of silver is from the discharge of untreated or improperly treated silver-bearing fixer from photographic material processing.
		Boulder Revised Code 11-3 Industrial and Prohibited Discharges requires that all facilities generating waste photographic fixer treat for silver removal prior to discharge to the saniary sewer.
		By opting for off-site disposal, you are guaranteed 100 percent recovery of silver in x-ray fixer.
	www.bouldercolorado.gov /index.php?option=com_content&task=view&id=4794&Itemid=1954 (714 words)

	Hazardous Waste Program - Boston College
		We also assist the generators in arranging for disposal of biohazard and sharps wastes, photographic wastes, gas cylinders, and recyclable wastes such as batteries and electronic equipment.
		Used photographic fixer should be collected for disposal or processing through silver recovery.
		Photographic developer can generally be poured down the sinks to go to the sanitary sewer system.
	www.bc.edu /offices/facilities/ehs/hazardous (1317 words)

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