公开(公告)号：US5411779A

公开(公告)日：1995-05-02

申请号：US877578

申请日：1991-03-21

申请人： Toshio Nakajima ,  Masayuki Kaneto ,  Toshihiko Tomita ,  Tokio Fujita ,  Hitoshi Ishizaka ,  Chiaki Harada ,  Gosei Uemura ,  Taizo Sasaki ,  Masao Nakamura ,  Mamoru Hondo ,  Tadanori Michimoto ,  Toshiaki Iwamoto

发明人： Toshio Nakajima ,  Masayuki Kaneto ,  Toshihiko Tomita ,  Tokio Fujita ,  Hitoshi Ishizaka ,  Chiaki Harada ,  Gosei Uemura ,  Taizo Sasaki ,  Masao Nakamura ,  Mamoru Hondo ,  Tadanori Michimoto ,  Toshiaki Iwamoto

IPC分类号： B29C41/22 ,  B29D23/00 ,  B29D99/00 ,  G03G5/10 ,  G03G15/20 ,  B32B7/02 ,  B32B27/00

CPC分类号： G03G15/2057 ,  B29C41/22 ,  B29D23/00 ,  B29D99/0035 ,  G03G15/2064 ,  G03G5/10 ,  B29K2027/12 ,  B29K2079/00 ,  B29K2995/0005 ,  B29L2023/00 ,  B29L2031/324 ,  B29L2031/709 ,  Y10T29/4956 ,  Y10T428/1372 ,  Y10T428/1393 ,  Y10T428/24628 ,  Y10T428/3154 ,  Y10T428/31721

摘要： The present invention relates to a composite tubular article for use as the fixing belt in an image-forming device such as a copying machine etc., particularly as a fixing belt suited for thermal fixing, and also relates to a process for producing the same.Conventionally known as an image-fixing belt is a belt consisting of a polyimide resin as the inner layer and a fluoroplastic as the outer layer. However, this fixing belt has problems that clear images cannot be obtained because the thickness of each layer is uneven, and that unglossed, so-called matt images cannot be obtained because the belt surface is smooth.This invention provides a composite tubular article comprising a tubular inner layer made of a polyimide resin and a tubular outer layer made of a fluoroplastic, the outer circumferential surface of the fluoroplastic tubular outer layer having a surface roughness of 1 to 10 .mu.m. The invention further provides, as a production process for the same, a process in which the outer layer is formed by use of a cylinder having an inner circumferential surface with a surface roughness of 1 to 10 .mu.m, and a polyimide-resin tubular inner layer is formed on the inner circumferential surface of the outer layer by converting a poly(amic acid) into a polyimide, or a process in which an inner layer formed by converting a poly(amic acid) into a polyimide is immersed in or sprayed with a fluoroplastic solution in which a particulate material of 5 .mu.m or smaller has been dispersed, thereby to form an outer layer.

摘要翻译： PCT No.PCT / JP90 / 00941 Sec。 371日期1991年3月21日 102（e）1991年3月21日PCT PCT 1990年7月20日PCT公布。 出版物WO91 / 01220 日本1991年2月7日。本发明涉及一种用作复印机等图像形成装置中的定影带的复合管状制品，特别是作为适合于热固定的定影带， 其制造方法。 常规称为图像定影带是由作为内层的聚酰亚胺树脂和作为外层的氟塑料构成的带。 然而，该定影带具有由于每层的厚度不均匀而无法获得清晰的图像的问题，并且由于带表面光滑，所以无法获得所谓的无光泽图像。 本发明提供一种复合管状制品，其包括由聚酰亚胺树脂制成的管状内层和由氟塑料制成的管状外层，所述氟塑料管状外层的外周表面具有1-10μm的表面粗糙度。 本发明还提供作为其制造方法的方法，其中通过使用具有表面粗糙度为1至10μm的内周表面的圆筒和聚酰亚胺树脂管状内部形成外层 通过将聚酰胺酸转化为聚酰亚胺，在外层的内周面上形成层，或者将通过将聚酰胺酸转化为聚酰亚胺而形成的内层浸渍或喷雾的工序 其中已经分散有5μm或更小的颗粒材料的氟塑料溶液，从而形成外层。