Electrophotographic toners

The flow behaviour of polymeric electrophotographic toner systems containing carbon black varying in surface area and concentration were determined using a cone and plate rheometer [51]. As the concentration of carbon black was increased, the viscosity at low shear rates become unbounded below a critical shear stress. The magnitude of this yield stress depended primarily on the concentration and surface area of the carbon black flller and was independent of the polymer (polystyrene and polybutyl methacrylate) and temperature. It was postulated that at low shear rates the carbon black formed an independent network within the polymer which prevented flow. 

Uses for dispersion polymers include surface coatings for metal coatings, particularly for the automotive industry, food can coating, chromatographic medium, electrophotographic toners, and pressure sensitive adhesives. 

Experimental data relating the spatial frequency dependence of image quality parameters obtained from electrophotographic toner deposits with the toner particle size distributions are presented. 

Polymers derived from benzo[l,2- i 5,4-heat-resistant polymers <86JAP(K)6128530>, electrophotographic toners <84JAP(K)5915256,83JAP(K)58176644) and liquid crystals for fibres and films... 

More generally, nonaqueous dispersions have been used as components of polishes [3.95], adhesives [3.96], [3.97], fiber coatings [3.98], textile impregnating agents [3.99], printing inks [3.100], [3.101], and electrophotographic toners [3.102], [3.103]. 

Uses S/B in solv.-based masonry paints, concrete floor enamels, concrete curing membranes and sealers, dry electrophotographic toners Properties Sol. in aromatic soivs., aliphatic blends, chlorinated HC, esters, ketones sp.gr. 1.05 dens. 8.74 Ib/gal ref. index 1.585 hardness (Sward) 16 (24 h) dissip. factor 0.0007 (100 Hz) dielec, const. 2.60 (100 Hz) vol. resist. 3x10 ohm-cm Pliolite S-5D [Goodyear]... 

Uses S/B for solv.-based coatings, concrete stains, waterproof texture and masonry coatings, concrete sealers, traffic paints, aluminum and metallic maintenance coatings, paper coatings, metallic inks, dry electrophotographic toners... 

Pharmaceuticals, cosmetics, inks, paints, foods, lubrication, food products, dyestuffs, foams, agriculture chemicals Photographic products, ceramics, paper coatings, magnetic media, catalysts, chromatographic adsorbents, membrane and latex film, electrophotographic toners... 

Fumed silicas are key ingredients in electrophotographic toners and developers. They are widely used as surface additives for toners and developers. The interaction of silica particles with the toner surface is of high importance for the toner performance [1,2]. Nevertheless, the adhesion of silica particles at toner particles is still an open topic of discussion. Thus it is necessary to visualize the distribution of silica particles and the silica particle size distribution on toner particle surfaces and... 

Major Applications Imaging materials, microcapsule toner,4 electrophotographic toner,5 decoder system, inks, paints, adhesives, identification of organic solventsio Safety/Toxicity No data available... 

Kosaka, H. Hirano, N. Electrophotographic toner. Jpn. Kokai Tokkyo Koho JP 06138708,1994 Chem. Abstr. 1995, 722, 68258. 

Tsubushi, K. Nagai, K. Kuramoto, S. Ogawara, M. Electrophotographic toner based on polymerized dyes or pigments. Jpn. Kokai Tokkyo Koho JP 63085644, 1988 Chem. Abstr. 1988,109, 201371. 

Bonnet has described photocurable, colored urethane - acrylate resins from sequential copolymerization of (XIl) with diisocyanates and multifunctional acrylates.Polyurethanes (XIIl) and polyureas (XIV) beaxing triphenylmethane and anthreiquinone dyes may be used for dyeing of natiaral and synthetic fibers or as electrophotographic toner materials. 3... 

MAJOR PRODUCT APPLICATIONS circuit boards, coatings, electrophotographic toners, foams, ID cards, inks, nanoprint lithography, paints, seals ... 

Ono H, Ando O, Takeuchi M (1994) Electrophotographic toners containing cyclic oligosaccharide. JP Patent 06-124002... 

Nair, M. Yang, X. Jones, X. K. Morgan, J. Electrophotographic toner porous particles containing hydrocolloids. U.S. Pat. Appl. Publ. US 2008176157, 2008 Chem. Abstr. 2008, 149, 211687. 

Yamazaki, T. Charge-controlling agent, its pulverization, and electrophotographic toner using it. Jpn. Kokai Tokkyo Koho JP 2006139061, 2006 Chem. Abstr. 2006, 144, 498242. 

Katagiri, Y Ko, K. Tateiwa, Y. Date, H. Kashiwagawa, T. Samwatari, N. Impact-resistant electrophotographic toner and its manufacture. Jpn. Kokai Tokkyo Koho JP 01169463, 1989 Chem. Abstr. 1990, 112, 88231. 

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