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INK SCRAPING DEVICE FOR SHEET-FED CIRCULAR PRESSURE GRAVURE PRINTING MACHINE
申请号	JP3199096	申请日	1996-02-20	公开(公告)号	JPH09220801A	公开(公告)日	1997-08-26
申请人	TOPPAN PRINTING CO LTD;			发明人	TAKEUCHI SHINYA; ONODERA KOJIRO; KAMAGATA AKIO;
摘要	PROBLEM TO BE SOLVED: To prevent an ink from sticking to an impression cylinder and thereby mitigate a work for cleaning the impression cylinder by setting a second guide face on which a roller rolls to slide a doctor into soft scraping contact with a printing plate forward of a useful face part at a lower elevation than a guide face, at the forward part of the guide face in the impression cylinder advancing direction and setting this gradient continuously. SOLUTION: An upward slant face 16 is continuously provided on a guide face 17 at the nearest part of a rail 10 for receiving a doctor 5 so that the doctor 5 slides into contact with the useful face part 15 of a printing plate 14 arranged on a surface plate 8 for the printing plate 14, from the nearest part of the useful face part 15. The nearest part of an upward slant face 16 is set at an elevation where a roller 6 comes into contact with the rail 10 under the effect of an energizing means 18 which is mounted on a bearing 3 and constantly energizes the doctor 5 into a direction where it is separated from the printing plate 14. Further, the doctor 5 is set to a specified elevated position using the nearest part of the rail 10 as a standby face 19 for the roller 6. In addition, the roller 6 is transferred to the guide face 17 from the roller standby face 19 through the slant face 16 and this transfer results in the sliding of the doctor 5 over the plate face of the printing plate 14 by a specified scraping power.
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