发明授权
- 专利标题: Process for fabricating a sleeve shaped printing form
- 专利标题(中): 用于制造套筒形印刷形式的方法
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申请号: US333216申请日: 1994-11-02
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公开(公告)号: US5499580A公开(公告)日: 1996-03-19
- 发明人: Eduard Hoffmann , Johann Winterholler , Wolfgang Prem
- 申请人: Eduard Hoffmann , Johann Winterholler , Wolfgang Prem
- 申请人地址: DEX Offenbach am Main
- 专利权人: MAN Roland Druckmaschinen AG
- 当前专利权人: MAN Roland Druckmaschinen AG
- 当前专利权人地址: DEX Offenbach am Main
- 优先权: DEX4338467.6 19931111
- 主分类号: B41C1/18
- IPC分类号: B41C1/18 ; B41F27/06 ; B41F27/12 ; B41N1/16 ; B21C37/08
摘要:
A sleeve-shaped printing sleeve for a form cylinder of a printing machine is fabricated from a blank of metallic material by cutting the blank to a width corresponding to the form cylinder and to an intermediate length which exceeds the circumference of the intended printing form cylinder. Additionally, the blank is provided with aligning indicia in the regions between each edge of the intermediate-length blank and the corresponding edge to be defined by cutting. Thus, these regions lie outside of the printing area. The blank is bent circularly, held in exact register in a bending/welding device, and cut to the length required for the intended form cylinder by laser beam cutters. As a result of this cutting operation, two waste pieces are produced. The waste pieces are removed and the now defined plate edges forming the beginning and end of the printing form are positioned opposite one another without overlap and welded together, preferably by a laser.
公开/授权文献
- US4974183A Computer keyboard with thumb-actuated edit keys 公开/授权日:1990-11-27
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