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Topic: Electrophotography

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	Smart Computing Encyclopedia Entry - electrophotography
		Electrophotography is a process used by laser printers, plain-paper fax machines, and copiers to print or reproduce documents.
		After the document is reproduced on the image drum with toner, the document image is transferred to paper and fused to it, normally with heat.
		Electrophotography technology was subsequently adopted for use in laser printers and plain-paper fax machines.
	www.smartcomputing.com /editorial/dictionary/detail.asp?guid=8CF5E5CB35CB42E1857F6F42970E2A2C&searchtype=1&DicID=17148&RefType=Encyclopedia (439 words)

	Electrophotography Overview --The Society for Imaging Science and Technology
		Electrophotography Overview --The Society for Imaging Science and Technology
		Electrophotography is based on two natural phenomena: materials of opposite electrical charge attract and some materials become better conductors of electricity when exposed to light.
		Carlson invented a six-step process to transfer an image from one surface to another using these phenomena, illustrated in figure 1.
	www.imaging.org /resources/web_tutorials/xerography.cfm (2438 words)

	Class 399: ELECTROPHOTOGRAPHY / U.S. Patent Classification Definitions
		Subject matter wherein a means or method is provided that senses a condition or change of condition and effects an image-forming operation of an electrophotography process (e.g., charging, exposing, developing, transfer, fixing, or cleaning), component, or device in response to the sensed or changed condition.
		Subject matter wherein an electrophotography system or method has the capacity to perform one or more of the functions of recognition, speech signal processing, knowledge processing (i.e., propositional logic, reasoning, learning, self-improvement), complex operations of a manipulator (e.g., robot* control), or inexact reasoning (e.g., fuzzy logic).
		Subject matter wherein an electrophotography device has an ability to be transported or moved by hand (i.e., carried).
	www.uspto.gov /go/taf/def/399.htm (10181 words)

	Toner for electrophotography - US Patent 6383705 (Site not responding. Last check: 2007-10-26)
		An object of the present invention is to provide a toner for electrophotography which is excellent all of the low-temperature fixing ability, the offset resistance, the blocking resistance, and the pulverizability, and capable of maintaining a high level of triboelectric charges for a long period of time, without causing contamination of the photoconductor.
		The toner for electrophotography of the present invention comprises a resin binder comprising a crystalline polyester (Resin A) and an amorphous polyester and/or an amorphous polyester-polyamide (Resin B) as its main components.
		According to the present invention, there can be obtained a toner for electrophotography which is excellent in the low-temperature fixing ability, the offset resistance, the blocking resistance, and the pulverizability, and capable of maintaining a high level of triboelectric charges for a long period of time, without causing the contamination of the photoconductor.
	www.patentstorm.us /patents/6383705.html (3443 words)

	Process for producing toner for electrophotography - Patent 4983488
		A toner for electrophotography produced by polymerizing a monomer dispersed by emulsification in the presence of a colorant and/or a magnetic powder, followed by coagulation is excellent in properties, particularly in cleaning properties, charge stability and caking resistance.
		Further, since polyolefin is more hydrophobic than styrene-acrylic resin which is a constituent of the toner, the former is localized in the core part of toner particles and scarcely present on the particle surface or in the vicinity thereof, so that offset prevention effect is not satisfactorily exhibited.
		According to this invention, there can be obtained by utilizing a polymerization process a toner for electrophotography suitable for dry development which is excellent in image density, resolution and gradation and, at the same time, excellent in cleaning property, charge stability and caking resistance.
	freepatentsonline.com /4983488.html (10781 words)

	Olle InfoFind
		n The first attempts at developing the process of electrophotography are explained in a patent by von Bronx in 1922.
		His attempts were directed toward the utilization of photocurrents to activate electrosensitive papers, which were sandwiched between a photoconductive layer and a conductive plate.
		The active history of electrophotography, most commonly known and referred to as xerography, begins with Carlson's invention in 1938.
	www.chromaticity.com.au /Glossary/WE002428.htm (985 words)

	Photoreceptor for electrophotography - Patent 4908289
		The photoreceptor claimed in claim 11, wherein X is a hydrogen atom or a halogen atom.
		Common photoreceptors for use in electrophotography are inorganic light-sensitive materials such as amorphous selenium, selenium compounds, cadmium sulfide and zinc oxide, as well as organic compounds typified by poly(vinylcarbazole) and poly(vinylcarbazole) derivatives.
		The use of these compounds is not limited to electrophotography; they may also be used with optical recording mediums (e.g., laser discs) and organic solar cells.
	www.freepatentsonline.com /4908289.html (3855 words)

	Viestintätekniikka -
		Or, phrased in another way, is there hidden potential in electrophotography which could be harnessed to generate something else than just printed images.
		Different forms of electrophotography such as powder and liquid based methods are assessed.
		Control of optical, electrostatic and, mass and heat transfer phenomena in a variety of configurations are considered as the key components and enablers for the future development of electrophotography.
	www.media.hut.fi /julkaisut/artikkelit/2310.html (325 words)

	ON CONTACT ELECTROPHOTOGRAPHY (Site not responding. Last check: 2007-10-26)
		, which, under the particular conditions present in electrophotography (low-light and high contrasts) is a very important factor when we must choose what type of film we should use.
		Another point is related to the fact that, as electrophotography images are formed from a general low intensity light source but with particular high intensity spots,
		When making contact electrophotography, this particular source of false images is working in a very effective manner.
	www.triune-being.com /Data/Esteban_Andres/ON%20CONTACT%20ELECTROPHOTOGRAPHY.htm (1388 words)

	Definition of electrophotography - Merriam-Webster Online Dictionary
		Learn more about "electrophotography" and related topics at Britannica.com
		Find more about "electrophotography" instantly with Live Search
		See a map of "electrophotography" in the Visual Thesaurus
	www.webster.com /dictionary/electrophotography (39 words)

	Computerized Quality Control Test Equipment for Electrophotography (Site not responding. Last check: 2007-10-26)
		Rapid advances in electrophotography and inkjet printing are imposing greater demands on requirements for paper performance.
		An important merit of this technique is the use of the soft-contact of corona charging instead of electrodes, achieving the objective of non-destructive and efficient characterization, applicable to finished devices.
		In dry toner electrophotography, hot-roll fusing is the method most commonly used to fix the toner to the media.
	www.qea.com /publications3b.html (4624 words)

	Liquid Electrophotography (Site not responding. Last check: 2007-10-26)
		Liquid toner electrophotography technology is a mature blend of science, materials and experience.
		Its history is documented with many practical and commercially viable applications, originating from a technology developed by scientists working in a government laboratory.
		In those early days, when dry electrophotography was still in its relative infancy, some of the future limitations of dry toners could already be seen.
	www.rla.com.au /liquid_electophotography.htm (522 words)

	TAPPI Website - Developing Future Digital Papers: Part II: Dry and Liquid Electrophotography Virtual Seminar Archives ...
		‘Part II: Dry and Liquid Electrophotography’ was presented on August 12, 2003 by John Oliver, Innov8 Consulting.
		Discover the paper properties and characteristics required for quality digital printing now and in the future with the proceedings from this Virtual Seminar series.
		This session, the second in the series, provides an in-depth look at the technologies and differences between dry and liquid electrophotography.
	www.tappi.org /index.asp?pid=28463 (430 words)

	Kyocera \| Products \| LED Printheads \| Electrophotography process
		The principles behind the electrophotographic process were discovered in the U.S. in 1938 by C. Carlson, and served as the basis for electrophotography and indirect method electrostatic copying.
		The composition of the process is shown in the nearby illustration.
		Laser : This type of system uses a semiconductor laser as the light source.
	www.kyocera.co.il /prdct/ios/led/gaiyo_e.html (118 words)

	Electrophotography (Site not responding. Last check: 2007-10-26)
		The word "electrophotography" uses 18 letters: A C E E G H H L O O O P P R R T T Y.
		Words within electrophotography not shown as it has more than seven letters.
		All words formed from electrophotography by changing one letter
	www.morewords.com /word/electrophotography (187 words)

	High-voltage electrophotography: FACT
		Researchers in the USA attempted to investigate the existence of electromagnetic fields associated with biological systems using new image analysis techniques to analyse high-voltage electrophotography.
		Five energy practitioners and five control subjects participated in the study.
		Quantitative analysis of reproducible changes in high-voltage electrophotography.
	journals.medicinescomplete.com /journals/fact/current/fact0702a08g08sr03.htm (249 words)

	221. : Investigation of an electrophotography based rapid prototyping technology (Site not responding. Last check: 2007-10-26)
		Investigation of an electrophotography based rapid prototyping technology
		In this technique, powder is printed layer-by-layer in the shape of the cross-sections of the part using electrophotography a very widely used non-impact printing method.
		Each layer of powder is consolidated by fusing before the next layer of powder is printed.
	home.att.net /~rpml/p04a/p04a_221.htm (194 words)

	Digital printing : color management, electrophotography, ink jet
		Digital printing : color management, electrophotography, ink jet
		Fundamentals of digital printing processes : Electrophotography : Principles and recent dévelopments
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	cerig.efpg.inpg.fr /EFPG-days/2004-autumn/contents.htm (426 words)

	Image-receiving sheet for electrophotography page
		An image-receiving sheet for electrophotography is рrоvided thаt hаs an outstanding gloss and whiсh саn be simply produced.
		Uma folha image-receiving para o electrophotography é fornecida, que têm um lustro excelente e que pode fàcilmente ser produzido.
		A folha image-receiving inclui um papel baixo e uma camada image-receiving do tonalizador que compreendem uma resina thermoplastic ao menos em uma superfície do papel baixo.
	www.patentalert.com /docs/001/z00137121.shtml (216 words)

	HUT-Physics, Bulletin board
		The theoretical results will be compared to experimental results for x-ray absorption and non-resonant inelastic x-ray scattering.
		Paper in electric field: effect of paper thickness and surface roughness on the toner transfer field in electrophotography
		We present a continuum model of the paper-air-toner system in the transfer gap in electrophotographic printing.
	www.fyslab.hut.fi /laboratory/Events/abs_old2004.html (1950 words)

	Method and apparatus for electrically biasing developing electrode of electrophotography device - Patent 4129375
		Method and apparatus for electrically biasing developing electrode of electrophotography device
		A photoconductive member utilized in a wet-type electrophotographic device is charged and radiated with a light image to produce an electrostatic image.
		Many other modifications within the scope of the present invention will become apparent to those skilled in the art.
	www.freepatentsonline.com /4129375.html (3220 words)

	Fixing toner images in electrophotography - United States Patent 3,948,215
		Fixing toner images in electrophotography - United States Patent 3,948,215
		A toner image formed on a support sheet by toner particles adhering to selected areas of the sheet is fused either by simply disposing the sheet in with a heating surface, or by additionally pressing the sheet.
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	xrint.com /patents/us/3948215 (3895 words)

	Thermal fixing-type developer material for electrophotography (US5407773)
		A thermal fixing-type developer material for electrophotography comprising a propylene-α-olefin copolymer wax (A) having a number average molecular weight (Mn) in the range of from 7,000 to 12,000; a binder (B); and a colorant (C).
		A thermal fixing developer material for electrophotography comprising
		Pressure-fixing toner for electrophotography and process for preparation thereof
	www.delphion.com /details?pn=US05407773__ (172 words)

	Avecia for Imaging chemicals and electrophotography materials (Site not responding. Last check: 2007-10-26)
		The Electrophotography business, headquartered in Manchester, UK, produces a range of materials for the laser printer, photocopier and digital press markets.
		Business development programmes addressing new, innovative products for this sector complement our more established products in polymerised toner and charge control agents.
		Our aim is to focus our technical capabilities via a flexible and collaborative approach to meet the requirements of our customers in the electrophotographic industry.
	www.avecia.com /electrophotography (68 words)

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