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    • 4. 发明授权
    • Transfer paper for electrophotography and process for producing the same
    • 用于电子照相的转印纸及其制造方法
    • US5662995A
    • 1997-09-02
    • US497739
    • 1995-07-03
    • Kunio SakuraiTsukasa MatsudaKyoko InoueHarumi WatanabeMasaru Kato
    • Kunio SakuraiTsukasa MatsudaKyoko InoueHarumi WatanabeMasaru Kato
    • D21H19/70G03G7/00B32B3/26
    • G03G7/0013D21H19/70G03G7/0006Y10T428/24802Y10T428/24934Y10T428/249953Y10T428/25Y10T428/27Y10T428/277Y10T428/31Y10T428/31993
    • Transfer paper for electrophotography of the present invention includes base paper; and a coating layer provided on at least one side of the base paper. The coating layer includes a pigment and a binder, has a solids content in the range of 2 to 10 g/m.sup.2, and has void-free areas containing no voids having a circle-equivalent diameter of equal to or more than 1 .mu.m and void area containing voids whose circle-equivalent diameter is equal to or more than 1 .mu.m. A proportion of void areas whose equivalent circle diameter is more than 20 .mu.m is not more than 2%, and the average equivalent circle diameter of the void areas and that of the void-free areas as observed on the surface of the coating layer satisfy at least one of the following conditions: (1) the average equivalent circle diameter of the void areas and that of the void-free areas are each from 1.5 to 10 .mu.m; (2) the average equivalent circle diameter of the void areas and that of the void-free areas are each 0.2 to 1.5 times the volume average particle size of the toner used for image formation; and (3) the average equivalent circle diameter of the void areas is from 1.0 to 10.0 .mu.m and that of the void-free area is from 1.5 to 10 .mu.m.
    • 本发明的电子照相用转印纸包括原纸; 以及设置在原纸的至少一侧上的涂层。 涂层包括颜料和粘合剂,其固体含量在2至10g / m 2的范围内,并且具有不含圆当量直径等于或大于1μm的空隙的无空隙区域,以及 空心面积为圆当量直径等于或大于1μm的空隙。 当量圆直径大于20μm的空隙区域的比例不超过2%,在涂层表面观察到的空隙区域和无空隙区域的平均当量圆直径满足 以下条件中的至少一个:(1)空隙区域的平均当量圆直径和无空隙面积的平均当量圆直径分别为1.5至10μm; (2)空隙区域和无空隙区域的平均当量圆直径分别为图像形成用调色剂的体积平均粒径的0.2〜1.5倍。 (3)空隙面积的平均当量圆直径为1.0〜10.0μm,无空隙面积为1.5〜10μm。
    • 10. 发明授权
    • Process for production of high-purity crystals of glycolic acid
    • 生产高纯度乙醇酸晶体的方法
    • US07164040B2
    • 2007-01-16
    • US10500882
    • 2003-01-29
    • Yoshito KurodaHarumi Watanabe
    • Yoshito KurodaHarumi Watanabe
    • C07C51/42
    • C07C51/43C07C59/06
    • A method for producing high purity glycolic acid crystals, which comprises the steps of: (1) providing an aqueous glycolic acid solution (A) which has (a) a water content of from 5 to 20% by weight, (b) a calculated monomeric glycolic acid weight ratio (ratio of the total weight of the monomeric glycolic acid and the component monomeric glycolic acid of the glycolic acid condensation product to the weight of the aqueous glycolic acid solution (A)) of from 0.60 to 1.00 and (c) a monomeric glycolic acid content of from 20 to 57% by weight; (2) depositing glycolic acid crystals from the solution (A); and (3) separating the deposited glycolic acid crystals from the solution (A).
    • 一种生产高纯度乙醇酸晶体的方法,包括以下步骤:(1)提供一种水性乙醇酸溶液(A),其具有(a)水含量为5至20重量%,(b)计算的 单体乙醇酸重量比(乙醇酸单体乙醇酸和乙醇酸缩合产物的单体乙醇酸的总重量与乙醇酸水溶液(A)的重量比)的比例为0.60〜1.00,(c) 单体乙醇酸含量为20至57重量%; (2)从溶液(A)中沉淀乙醇酸晶体; 和(3)从溶液(A)中分离沉积的乙醇酸晶体。