Reference

Electrophotographic yellow toners suitable for preparing OHP sheets, and full-color electrophotography

Electrophotographic yellow toners suitable for preparing OHP sheets, and full-color electrophotography. Nonaka, Katsuyuki; Inaba, Koji; Nakamura, Tatsuya; Kawakami, Hiroaki; Handa, Satoshi; Moriki, Yuji (Canon Inc., Japan). Jpn. Kokai Tokkyo Koho JP 2004333892 A2 25 Nov 2004, 48 pp. (Japanese). (Japan). CODEN: JKXXAF. CLASS: ICM: G03G009-09. ICS: G03G009-08; G03G009-087; G03G009-097.Some commonly used reagents like 4702-90-3 and 2481-94-9 are used in this experiment. APPLICATION: JP 2003-129914 8 May 2003. DOCUMENT TYPE: Patent CA Section: 74 (Radiation Chemistry, Photochemistry, and Photographic and Other Reprographic Processes) Section cross-reference(s): 41 The yellow toners contain (a) binder polymers, (b) colorants selected from C.I. solvent Yellow 33, 56, 79, 82, 93, 112, and 163, (c) release agents, and (d) divalent- or trivalent metal salts of arom. hydroxycarboxylic acids I (R1-2 = H, normal-chain or branched-chain alkyl, alkenyl, alkoxy, halo, nitro, cyano, amino, etc.; m, n = 0-5) as charge-control agents, wherein the toners have av. roundness of 0.920-0.005 with std. deviation of <0.040, and the toners contain tetrahydrofuran-sol. components with GPC (gel permeation chromatog.) wt.-av. mol. wt. of 10,000-600,000. Also claimed are full-color electrophotog. employing the yellow toners. The toner stably provides good quality images and high transparent images on OHP sheets. .