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印刷刀线的影响因素与哪些有关?

1、版面光洁度的影响

1, the influence of the smoothness of the layout

济南台历印刷在凹印印版目前大都采用电子雕刻制版工艺制作,电雕过程中,网穴的边缘会产生毛刺.如果在抛磨时未能将毛刺打磨干净,在印刷过程中,版面上有毛刺部位的油墨不易刮干净,严重时会损坏刮墨刀,从而形成刀线。对于因印版表面粗糙而导致的印刷品刀线,可用1200目的细砂纸轻轻打磨印版,但一般情况下最好不要打磨印版,以免损伤印版。

At present, the printing plate of Ji'nan calendar is mostly made of electronic engraving and plate making. In the process of electric carving, the edge of the net point will produce burr. If the burr is not cleaned in the polishing process, the printing ink is not easy to scrape in the printing process, and the scalpel will be damaged in serious time, thus forming a knife. Line. For the printing line caused by the surface roughness of the plate, 1200 fine sand paper can be used to gently grind the plate, but in general, it is better to not polish the plate to avoid damage to the plate.

2、铬层硬度的影响

2, the influence of the hardness of chromium layer

制版时,如果镀铬时间过长,印版表面铬层的硬度太高,容易损伤刮墨刀,印刷品上就会出现变化不定的刀线。相反,如果镀铬时间过短,印版表面铬层太软,刮墨刀容易损伤印版,在印刷品上就会出现固定的刀线。

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Plate making, if the chrome plating time is too long, the hardness of the chromium layer on the printing plate is too high, it is easy to damage the scraper blade, and there will be a variable knife line on the printed matter. On the contrary, if the time of chrome plating is too short, the surface of the printing plate is too soft, and the blade is easy to damage the printing plate, and there will be a fixed knife line on the printed matter.

3、版面清洁度的影响

3, the influence of the cleanliness of the layout

制版的研磨工序生成的碎屑未能完全清除而附着在印版上,在印刷过程中会损伤印版和刮墨刀,从而产生刀线。新版上机印刷前,最好先用溶剂将其彻底清洗一遍,将油污和杂质清除干净,以减少印刷品刀线故障的产生。

The crumbs generated in the grinding process of the plate making can not be completely removed and attached to the printing plate, which will damage the printing plate and scraping cutter in printing process, thus creating knife lines. Before the new version is printed, it is better to thoroughly clean the oil and impurities with solvent, so as to reduce the failure of printing knife line.

4、机械加工精度的影响

4, the influence of machining precision

印版滚筒的机械加工精度差也会导致印刷品刀线故障,且难以检测或不易检查到,故容易被忽视,实际操作时,可上机检查。此外,还应严格控制好印版的安装精度,以免由于同心度误差超标,在高速印刷时对刮墨刀产生过大的冲击而造成印刷品刀线故障的发生。

The poor machining precision of the plate roller can also cause the line fault of the printed matter, and it is difficult to detect or not be easily checked, so it is easy to be ignored, and the machine can be checked in the actual operation. In addition, the installation accuracy of the plate should be strictly controlled so as to avoid the excessive impact of the concentric error on the scraper blade in high speed printing, which causes the fault of the print tool line.

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Thank you for your reading, the source of this article: Ji'nan calendar calendar more content and questions please click: http://www.sdyszb.com we will continue to work hard for you to provide service, thank you for your support!


 
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