公开(公告)号：US5454251A

公开(公告)日：1995-10-03

申请号：US186577

申请日：1994-01-26

申请人： Takatsugu Funawatari ,  Daiki Kobayashi ,  Takashi Taguchi

发明人： Takatsugu Funawatari ,  Daiki Kobayashi ,  Takashi Taguchi

IPC分类号： G11B23/03 ,  B21D53/00

CPC分类号： G11B23/0308 ,  Y10S72/702

摘要： A manufacturing method of a shutter for a cartridge which is accommodating therein a recording medium includes the steps of punching out a plate-shaped metal material so as to provide a shutter of a developed shape having a pair of plate-shaped portions and a coupling portion for coupling the pair of plate-shaped portions, shaping the punched-out member in such a fashion that the pair of plate-shaped portions are opposed to each other across the coupling portion and that a spacing between free end sides of the pair of plate-shaped portions become narrower than a spacing of the pair of plate-shaped portions at its portion coupled by the coupling portion, and shaping the shaped member such that a spacing between free ends of the pair of plate-shaped portions of the member shaped by the second process become substantially equal to a spacing of the pair of plate-shaped portions at its portion coupled by the coupling member.

摘要翻译： 其中容纳有记录介质的盒的快门的制造方法包括以下步骤：冲压出板状金属材料，以便提供具有一对板状部分的开发形状的活门和耦合部分 为了联接所述一对板状部分，以使所述一对板状部分跨越所述联接部分彼此相对的方式成形所述冲压部件，并且所述一对板的自由端侧之间的间隔 形状部分变得比通过联接部分耦合的一对板状部分的间隔窄，并且成形构件使得成形的一对板状部分的自由端之间的间隔由 第二过程变得基本上等于一对板状部分在其由联接构件联接的部分处的间隔。