Developer composition for developing an electrostatic image
    15.
    发明授权
    Developer composition for developing an electrostatic image 失效
    用于显影静电图像的显影剂组合物

    公开(公告)号:US4572885A

    公开(公告)日:1986-02-25

    申请号:US395965

    申请日:1982-07-07

    IPC分类号: G03G9/087 G03G9/113 G03G9/16

    摘要: There are disclosed an electrostatic image developer which comprises a carrier comprising iron powder particles coated with a resin and a toner comprising a low molecular weight polypropylene, and an electrostatic image developer which further comprises as binder a homopolymer of a styrene or a copolymer of a styrene with an another vinyl monomer containing 10 to 70% by weight of a high molecular component having a molecular weight of 100,000 to 10,000,000.The electrostatic image developer of the present invention can accomplish good developing without forming fogging even when provided in a great number of developments, thus exhibiting a great durability, and is also free from image contamination by the off-set phenomenon to give an excellent copied image.

    摘要翻译: 公开了一种静电图像显影剂,其包含载体,该载体包含用树脂涂覆的铁粉颗粒和包含低分子量聚丙烯的调色剂,以及静电图像显影剂,其还包含作为粘合剂的苯乙烯均聚物或苯乙烯共聚物 与另一乙烯基单体一起含有10至70重量%的分子量为100,000至10,000,000的高分子组分。 本发明的静电图像显影剂即使在大量的开发中被提供也可以实现良好的显影而不形成起雾,因此表现出很大的耐久性,并且也没有图像污染的偏移现象,以产生优异的复印图像 。

    Gelatin hardening process
    19.
    发明授权
    Gelatin hardening process 失效
    明胶硬化工艺

    公开(公告)号:US4039520A

    公开(公告)日:1977-08-02

    申请号:US450227

    申请日:1974-03-11

    IPC分类号: C08K5/00 C09H7/00 G03C1/30

    摘要: A process for hardening gelatin which comprises reacting photographic gelatin with a compound of the general formula[A-B-(NHCO).sub.m.sub.-1 X-Y].sub.n Zwherein A is CH.sub.2 =CH--, CH.sub.2 =C(R.sub.1)--, CH.sub.2 (R.sub.1)--CH.sub.2 -- or CH.sub.2 (R.sub.1)--CH(R.sub.2)-- (where R.sub.1 and R.sub.2 are halogens); B is --CO-- or --SO.sub.2 --; X is oxygen, sulfur or --NH--; Y is --CO--, --SO.sub.2 -- or a simple bond, and when Y is --CO-- or SO.sub.2 --, X is --NH--; m is 1 or 2; n is an integer of 2 or more; and Z is a simple bond, an n-valent aliphatic, alicyclic, aromatic or heterocyclic group, or an n-valent group comprising the combination of said groups, --CO--, ##STR1## in which R.sub.3 and R.sub.4 individually represent an alkyl group which may have substituents, an aryl group which may have substituents, an alkoxy group which may have substituents, an aryloxy group which may have substituents, an alkylamino group which may have substituents, or an arylamino group which may have substituents); and As, Bs, Xs and Ys may individually be the same or different.

    摘要翻译: 一种硬化明胶的方法,其包括使照相明胶与通式[AB-(NHCO)m-1X-Y] nZ化合物反应,其中A是CH 2 = CH-,CH 2 = C(R 1) - ,CH 2 -CH 2 - 或CH 2(R 1)-CH(R 2) - (其中R 1和R 2是卤素); B是-CO-或-SO 2 - ; X是氧,硫或-NH-; Y是-CO-,-SO2-或简单键,当Y是-CO-或SO2-时,X是-NH-; m为1或2; n为2以上的整数, Z为单键,n价脂肪族,脂环族,芳香族或杂环基或包含所述基团的组合的n价基团,其中R 3和R 4各自表示烷基 其可以具有取代基,可以具有取代基的芳基,可以具有取代基的烷氧基,可以具有取代基的芳氧基,可以具有取代基的烷基氨基或可具有取代基的芳基氨基; 而As,Bs,Xs和Ys可以分别相同或不同。