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書刊印刷工序裁切

From:Buke printing factory of China | Author:China Bukeprinting factorybook0755 | Published time: 2020-10-21 | 367 Views | 🔊 Click to read aloud ❚❚ | Share:
書刊印刷工序裁切

書刊印刷工序裁切

印刷半成品(書頁)送到裝訂工序後,應首先進行驗收,收項目一般為:檢查印張有無走版(兩面印刷得不一致)、折損墨色不一致、裝版印跡臟污等情況。再檢查印數,裝訂份數加上加放數是否足夠。依據裝訂通知單,抽樣檢查印張是否齊全。檢查時,應將組成書籍的各部分(書名頁、版權頁、譯文、正文首頁至末頁、附錄、參考文獻、插圖、插頁、插表以及封面等),各抽樣1~2張,檢查其是否齊全,頁碼順序是否正確,折標及插頁有無錯誤等。檢查無誤後,即可轉入裁切。


裁切之前,需要將印張的邊闖齊,以保證裁切尺寸的準確。闖頁工作,目前大多由人工完成,操作方法有錯動式和撞擊式之分。裁切,俗稱開料,是用切紙機將闖齊的印張按照開本規格切成所需要尺寸的操作。

切紙機的種類、型號很多,但主要結構基本相同。裁切過程,首先按裁切紙張的幅面大小調整推紙器的位置,然後把闖齊的紙張放到工作臺上,使其緊靠推紙器將紙疊移動至規定的裁切線,放下壓紙器將紙疊壓實,即可開動機器使裁刀落下切紙。


裁切的基本質量要求是
,裁切尺寸要合乎要求;切口要光潔。


根據國家行業標準
CYT7.9-1991的規定,裁切的質量要求如下


①書刊成品。平裝書誤差小於2mm;精裝書誤差小於1.5mm
無明顯歪斜、刀花和刀痕。


②半成品。


a.大張、常規插圖、散頁:尺寸誤小於2mm


b.圖表:以書刊正文為準,尺寸誤差小於2.5mm,超幅面折
圖例外


C.封皮:天頭、地腳誤差小於3mm,書脊與前口(即翻口)誤差小於2mm


d.雙聯:誤差小於3m,破口(切口處的破損)闊度小


e.書殼紙板、中徑紙板:以書芯規格及造型要求為準,誤差」
小於lmm


操作技術不良、闖頁不齊、紙張質量缺陷
(起皺不平、薄厚
不均等)、機器調整不當、裁刀缺陷(刀刃鈍、刀刃缺口)等都會造成裁切的質量問題,常見的質量問題是切紙尺寸誤差、切口有刀紋、紙疊切後上長下短以及切好的紙張左右歪斜等


造成紙疊切後上長下短的原因很多
,如刀鈍、裁刀與工作台不
垂直、推紙器前錶面與工作台不垂直,壓紙器壓力不足等都會出現這種現象。

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請聯系深圳步殼印刷廠客服

書刊印刷工序裁切
書刊印刷工序裁切

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