会员体验
专利管家(专利管理)
工作空间(专利管理)
风险监控(情报监控)
数据分析(专利分析)
侵权分析(诉讼无效)
联系我们
交流群
官方交流:
QQ群: 891211   
微信请扫码    >>>
现在联系顾问~
热词
    • 7. 发明授权
    • Spool for photographic film
    • 原型电影线轴
    • US4796823A
    • 1989-01-10
    • US88224
    • 1987-08-24
    • Mutsuo AkaoHisao EndoToshio SataMasanori Ishiguro
    • Mutsuo AkaoHisao EndoToshio SataMasanori Ishiguro
    • G03C3/00B65H75/14G03B17/30B65H75/18
    • B65H75/14G03B17/30B65H2701/5122G03B2217/261G03B2217/265Y10T428/24Y10T428/24182Y10T428/24355
    • A spool for a photographic film comprising 50 to 99.8 wt. % of polystyrene resin, 0.05 to 2.2 wt. % of dimethylpolysiloxane and/or modified dimethylpolysiloxane of which a part of methyl groups are substituted by carboxyalkyl groups, 0.5 to 6 wt. % of rubber and 0.05 to 3 wt. % of carbon black having a pH of 5 to 9 and a mean particle size of 10 to 120 m.mu., and the outer surface of the flange of the spool is made rough so that the reflectance of the incident light at an incident angle of 75 degrees is less than 40% in the direction of regular reflection at an angle of 75 degrees.Static frictional coefficient of this spool against metal is small, and thereby photographic film can be drawn out of a photographic film cartridge smoothly to the last. Breakage of the perforations of photographic film does not occur. The outer surface of the flange of the spool is not glossy and its reflectance is low. Accordingly, the light passed through the space between end cap of cartridge and boss of spool does not reach the photographic film in the cartridge.
    • 一种用于照相胶片的卷轴,包括50至99.8wt。 聚苯乙烯树脂的%,0.05〜2.2重量% %的二甲基聚硅氧烷和/或其一部分甲基被羧基烷基取代的改性二甲基聚硅氧烷,0.5〜6重量% %的橡胶和0.05〜3wt。 %的炭黑的pH为5〜9,平均粒径为10〜120μm,并且使卷轴的凸缘的外表面粗糙,入射角为75°的入射光的反射率 度在75度的角度下的规则反射方向小于40%。 该卷轴对金属的静摩擦系数很小,从而摄影胶片可以平滑地从摄影胶片盒中抽出到最后。 摄影胶片穿孔不会发生破裂。 阀芯法兰的外表面不光滑,反射率低。 因此,通过墨盒的端盖和阀芯的凸台之间的空间的光不会到达墨盒中的照相胶片。