发明授权
- 专利标题: Control apparatus for paper pressure rollers of printing machines
- 专利标题(中): 印刷机用纸压辊控制装置
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申请号: US880027申请日: 1986-06-30
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公开(公告)号: US4722624A公开(公告)日: 1988-02-02
- 发明人: Pietro Musso
- 申请人: Pietro Musso
- 申请人地址: ITX Ivrea
- 专利权人: Ing. C. Olivetti & C., S.p.A.
- 当前专利权人: Ing. C. Olivetti & C., S.p.A.
- 当前专利权人地址: ITX Ivrea
- 优先权: ITX67730A/85 19850820
- 主分类号: B41J13/02
- IPC分类号: B41J13/02 ; B41J13/00 ; B41J13/20 ; B41J13/036
摘要:
The control apparatus, in particular for electronic typewriters, comprises a lower guide for guiding a sheet of paper beneath a platen roller and up to a printing line of the platen roller, and a series of paper pressure rollers for guiding the sheet beyond the printing line. The pressure rollers are carried by a frame which is movable manually by a lever, a spring and lever and a pin and slot coupling to move the pressure rollers away from the platen roller and to activate a switch to initiate motor drive of the platen roller. The frame further couples a cyclic actuating mechanism to a drive pinion element of the platen roller. When the plate rotates, this mechanism acts on the frame so as to effect automatic closure of the pressure rollers, such as to permit engagement of the pressure rollers with the upper edge of the paper and subsequent printing in a region of the sheet adjacent to its top edge.
公开/授权文献
- US5226582A Method for wire-bonding an integrated circuit 公开/授权日:1993-07-13