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    • 36. 发明授权
    • Image forming method
    • 图像形成方法
    • US5753396A
    • 1998-05-19
    • US563603
    • 1995-11-28
    • Tatsuya NakamuraMasayoshi KatoShuichi AitaKoji InabaKengo HayaseYuki Nishio
    • Tatsuya NakamuraMasayoshi KatoShuichi AitaKoji InabaKengo HayaseYuki Nishio
    • G03G5/04G03G9/08G03G9/097G03G21/00G03G13/06
    • G03G5/04G03G21/0064G03G9/0827G03G9/09733G03G2221/0005
    • An image forming method comprising; a charging step of electrostatically charging a photosensitive member; an exposure step of exposing the charged photosensitive member to form an electrostatic latent image; a developing step of bringing a toner carried on a developer carrying member, into contact with the surface of the photosensitive member to develop the electrostatic latent image to form a toner image on the photosensitive member; a transfer step of transferring the toner image formed on the photosensitive member, to a transfer medium; and a cleaning-at-development step of collecting the toner remaining on the photosensitive member after the transfer step, onto the developer carrying member; a wherein; the surface of said photosensitive member has a contact angle with water of 85.degree. or greater; said toner contains residual monomers in an amount not more than 1,000 ppm; and said toner has a shape factor SF-1 of from 100 to 180 and a shape factor SF-2 of from 100 to 140.
    • 一种图像形成方法,包括: 对感光构件静电充电的充电步骤; 曝光步骤,使所充电的感光件曝光以形成静电潜像; 显影步骤,使承载在显影剂承载构件上的调色剂与感光构件的表面接触,以显影静电潜像,以在感光构件上形成调色剂图像; 将形成在感光构件上的调色剂图像转印到转印介质的转印步骤; 以及在显影剂承载构件上收集在转印步骤之后残留在感光构件上的调色剂的清洗显影步骤; 其中; 所述感光构件的表面与水的接触角为85°或更大; 所述调色剂含有不超过1,000ppm的残留单体; 并且所述调色剂具有100至180的形状系数SF-1和100至140的形状系数SF-2。
    • 38. 发明授权
    • Magnetic toner, magnetic developer, apparatus unit, image forming
apparatus and facsimile apparatus
    • 磁性调色剂,磁性显影剂,装置单元,图像形成装置和传真装置
    • US5424810A
    • 1995-06-13
    • US942840
    • 1992-09-10
    • Koichi TomiyamaHiroyuki SuematsuMasayoshi KatoHiroshi YusaTakakuni Kobori
    • Koichi TomiyamaHiroyuki SuematsuMasayoshi KatoHiroshi YusaTakakuni Kobori
    • G03G9/083G03G15/09
    • G03G9/0834
    • A magnetic toner for electrophotography is composed from a binder resin and a silicon-containing magnetic iron oxide. The magnetic toner has a weigh-average particle size o at most 13.5 .mu.m and has a particle size distribution such that it contains o more than 50 wt, % of magnetic toner particles having a particle size of at least 12.7 .mu.m. The magnetic toner is able to show high developing performances because of richness in fine particles and is also provided with an improved environmental stability because the magnetic iron oxide used therein contains 0.5-4 wt, % silicon (based on total iron content) and has a specific silicon distribution such that the magnetic iron oxide has a total silicon content (A), a silicon content (B) dissolved together with the magnetic iron oxide when the magnetic iron oxide is dissolved up to 20 wt, % dissolution of iron, and a superficial silicon content (C), satisfying relations of B/A=44-84% and C/A=10-55%. The performances are enhanced if the magnetic toner is blended with additives such as inorganic fine powder or resin fine particles.
    • 用于电子照相的磁性调色剂由粘合剂树脂和含硅磁性氧化铁组成。 磁性调色剂具有至多13.5μm的重均粒径,并且具有使其含有超过50重量%的粒径至少为12.7μm的磁性调色剂颗粒的粒度分布。 磁性调色剂由于细颗粒的丰富性而能够显示高显影性能,并且由于其中使用的磁性氧化铁含有0.5-4重量%的硅(基于总铁含量)并具有改善的环境稳定性,并且具有 磁性氧化铁具有总硅含量(A),当磁性氧化铁被溶解时与磁性氧化铁溶解在一起的硅含量(B)高达20重量%,铁溶解度高, 表面硅含量(C),满足B / A = 44-84%和C / A = 10-55%的关系。 如果将磁性调色剂与无机细粉或树脂微粒等添加剂混合,则性能得到提高。