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多色图集印刷的二次套印难题

文章出处: 人气:发表时间:2018-07-17 16:10

多色图集印刷顾名思义是指印刷色多于CMYK四色的印刷方式,多应用于大型专题地图集的印制。这是因为专题地图集所承载的信息量比较大,色彩层次比较丰富,仅用CMYK四色叠加无法达到要求,因此工艺人员通常会设计几个专色作为补充,比如钢灰、深棕或大红、桔黄等。

  通常四色胶印机印刷此类多色图集的工艺流程是一面一面印,即印正面四色→正面专色→背面四色→背面专色,纸张的每一面要印两遍,这就存在二次套印问题,即四色印刷与专色印刷之间的套印。对于精细地图产品而言,主要部位的套印误差应≤0.2mm,次要部位的套印误差应≤0.5mm。那么,如何保证如此高的套印精度?这对工艺人员和机台来说都是一个挑战。

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  控制好纸张变形

  YINQIZHIZHANGBIANXINGDEYINSUZHUYAOYOULIANGGE,FENBIESHICHEJIANWENSHIDUJIYINSHUAGUOCHENGZHONGDERUNBANYEYONGLIANG。

  1.严控车间温湿度

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  2.控制润版液用量

  YINSHUAZHONGSHUILIANGDAXIAOYAOZUNXUN“HUOJIANZAIBUHUBUZANGDEQIANTIXIAYUEXIAOYUEHAO”DEYUANZE。SHUIDESHIYONGLIANGXIAO,BUJINTUWENYANSEBAOMANXIANYAN,ERQIEZHIZHANGBIANXINGXIAODAOKEYIHULVEBUJI,WEIDIERCITAOYINDAXIAHAODEJICHU。FANZHI,SHUIDESHIYONGLIANGDA,SISEDOUYOUKENENGTAOYINBUZHUN,HUANGLUNHOUXUDEZHUANSETAOYIN。RUHEPANDUANBANMIANSHUILIANGDAXIAO?JIANDANYIXINGDEFANGFASHICONGCEMIANYINGZHEGUANGXIANGUANCHAYINBANGUNTONG,RUGUOBANMIANCHENGANHUISE,SHUOMINGSHUILIANGGANGHAO;RUGUOBANMIANMINGHUANGHUANGFALIANG,SHUOMINGSHUILIANGDALE,YAOWANGXIAJIANG。

  保持印刷过程中走纸规矩稳定一致

  1.规矩部件调整到最佳状态,不带病作业

  据笔者多年经验,多色印刷时,底规出问题的概率较小,更多的是边规出状况。海德堡四色胶印机的边规工作原理是拉规球做上下摆动,与底座上的拉规条配合将其间的纸张拉动并定位,这就决定了边规是一个易发生问题的地方,需要多留意(海德堡给每台胶印机的边规配了两根拉纸弹簧,以适应不同厚度的纸张,笔者建议定量为157

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  DANGRAN,ZAIGUANZHUBIANGUIDETONGSHI,YEBUNENGHUSHIDIGUI。WEILEWENDINGDIGUI,SHUZHIBANSHANGJIEZHILUNYALI、SHUZHIBUDAISONGJIN、MAOSHUALUNYALIDENGDOUYAODAXIAOSHIZHONG、JUNYUN,FANGZHIZOUZHICHUXIANWAIXIE、XIABUDAO、XIAGUODENGXIANXIANG。

  2.印刷过程中勤闯纸,勤检查规矩

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快三彩票   XUYAOTEBIEZHICHUDESHI,ZAIBEIMIANDIYICIYINSHUASISESHI,ZHENGBEIGUIJUYIDINGYAOYICIZHAOZHUN,YIDANKAISHIYINSHUA,JIUBUNENGQINGYIDONGGUIJU,QIEJIZAIYINSHUAGUOCHENGZHONGWEILEZHENGBEITAOYINERDINGZHI、TUIZHI,DUODIAO、SHAODIAO,NAPAWEIDONGDOUHUISHIGUIJUFASHENGGAIBIAN,CONGERYINGXIANGERCITAOYIN。

  3.机速不宜过快

快三彩票   JISUTAIKUAI,DINGWEISHIJIANJIUDUAN,GUIJUYIBUWEN,YOUQIYINZHENG、BEISISESHI,JISUKONGZHIZAI6500ZHANG/SHI~7000ZHANG/SHIZUOYOUSHI,GUIJUJIAOPINGWEN。

  LINGWAI,BANCHENGPINDECUNFANGYESHIYIGEBURONGHUSHIDEHUANJIE。WEILEBAOZHENGYINSHUAHOUDEBANCHENGPINBUSHOUWAIJIEHUANJINGGANRAOERBIANXING,DOUYAOJIQIBAOSHANGSULIAOMO。CAOZUOSHIZUIHAOLIANGGERENXIANGHUPEIHE,CONGZHITAIDIBUZHUBUWANGSHANGCHANRAO,BAOGUOYANSHIBULIUFENGXI。

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此文关键字:印刷技术,多色图集印刷

GUANGDONGGUANGZHOUZENGCHENGLONGDAYINSHUACHANGSHIGUANGZHOUZHUANYEDEYINSHUAGONGCHANG,CAIYINCHANGJIA,GONGCHANGFUWUYOU:ZHIHE,ZHIDAI,CAIHE,HUACEYINSHUA,SHOUTIDAI,CHANPINSHUOMINGSHUYINSHUA,BIAOGE,XINFENG,BUGANJIAOBIAOQIANTIEZHIYINSHUA,ZHEYE,XUANCHUANDANYINSHUA,FENGTAO,CAIXIANG,CAIHE,CAIYEYINSHUA,DANJUBIANQIAN,SHUJIZAZHI,TAILIGUALIYINSHUA,YINSHUAJIAGONGDENGYIQIEZHILEIYINSHUAPINJUNKEYINSHUA,GUANGZHOU,ZENGCHENG,XINTANG,LICHENG,BAIYUNQU,TIANHEQU,LUOGANGQU,HUANGPUQU,HUADOU,FANYU,NANSHADENGDIDEKEHUKEQIANLAIZIXUNXIADING,SONGHUOSHANGMEN,BAOZHENGGUANGZHOU、ZENGCHENGNAIZHIFUJINDIQUJIAGEZUISHIHUI,ZHILIANGZUIHAO,XINGJIABIZUIGAO。


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