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</div> </div> <div class="JLpages_R"> <div class="JLpages_R_title"> <p>新闻内容</p><span><a href="/">首页</a> > <a href="/news/gsxw/">公司新闻</a> > 详细内容</span> </div> <div class="JLpages_R_cont"> <!--JLpages_R_cont--> <div class="JLpages_about_cont"> <div class="JLpages_xwnr"> <h1>重庆印刷厂介绍画册设计后的印刷工作很重要</h1> <h6>来源?a href='http://www.eoetc.com/news/54.html'>http://www.eoetc.com/news/54.html</a>    发布时间 : 2017-01-13</h6> <div class="KTpages_xwnr_cont"> <p><p> <span style="font-size:16px;font-family:SimSun;">  <b>重庆印刷</b>厂介绍画册设计后的印刷工作很重要?/span> </p> <p> <span style="font-size:16px;font-family:SimSun;">  印刷打样需要重视。画册打样通常使用较厚、较白的铜版张,变形小,套合精度高,而且美观。而印刷是大批量生产,使用纸张要考虑成本、纸张变形率、白度等多种因素。这样就不可能使用较厚较白的铜约。为缩小印刷与打样的差异,必须在打样时就考虑到印刷,使用以纸张与印刷一致。比如在印刷机调试到最佳状态时,印刷的灰平衡曲线与打样的差异在什么位置上?打样的色序对色彩有什么变?打样的湿压与印刷的湿压湿它们的叠印率各是多少?实地密度应该是多?印刷机的网点扩大值与打样差多?这些问题不仅仅是印刷的问题,更主要的是制版的问题。制版者应该对印刷的各种条件有一个了解,才能根据印刷适性制出适合印刷的印版。印刷就是要以印刷为中心,制版必须为印刷服务,因为印刷的产品是最后的成品。做好了这一点,不仅有利于生产计划的落实,而且有利于产品质量的提高。在我们印刷生产单位,制版和印刷分得太明显,界线太清,造成了制版的人不了解印刷,印刷的不了解制版。由于油墨对纸张的剥离力增大,降低了墨量转移,使实地不实,网点不结实,反映在印刷品上墨层薄,反差小。要减少这方面的差异,从印刷角度讲,要适当控制机?使用硬包?昼减肥少润版液的用量。印刷与打样的速度不同,因此纸张与油墨的粘附力、纸张与滚筒上油墨的剥离力都不相等。打样机速度低,滚筒、油墨、橡皮布对纸张剥离力小,打出的画册样张墨层厚实,网点光洁,扩大值小,层次丰富,反差大。打样、印刷色序应一致地图印刷的印刷色序一般是黑棕、兰绿。这样深色在前,浅色在后,主要要素在前,次要要素在后;网点面积小的在前,网点面积大的在?墨色亮度暗的在前,亮的在后。打样的色序也要与以上色序统一。印刷质量一是取新局面于印刷本身的质量,二是取新局面于制版的质量。因此制版和印刷是密不可分的、完整的统一体。目前都是把制版和印刷划分在两个不同的单位,所以在生产作业中,主管生产的业务部门应该协调好两者之间的关系,这一点越来越显得重要。管理上要统一协调平版印刷主要是制版和印刷两大工艺。这两者又是一个有机的整体,制版复制过程中任一环节质量的优劣均直接影响印刷质量。在印刷彩画及实地照片时,印刷色序就统一为:??品红-黄。这样有利于突出黑版的轮廓,稳定底调色彩,有利于突出主色调。特别是在印刷其它彩画及实地照片(如地志等的图?时,更要强调打样与印刷色序的一致性。如果打样与印刷色序不统一,就会产生印刷无法追上打样样张的问题。因此,在调整印刷压力时,不能把两机的压杠调成一致,即应调节包衬厚度。画册打样时是圆压平,而印刷时是圆压圆,在同样压杠宽度下,圆压圆印刷机的压缩量是圆压平打样机的一倍。而印刷时则是湿压湿,前后印刷时间很短,墨层来不及干燥。对于这个问题,只有在画册打样时一次性及时把几个色都打样完。打样时是湿压干,即先打样的墨放置一段时间后,墨层适度干燥了,再打样下一个色。而画册印刷时则刚好相反,主色(?先印、副??后印?nbsp;</span> 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