nkhani

Chidule: Mapepala ndi zinthu zomwe zimagwiritsidwa ntchito kwambiri posindikiza.Zake thupi katundu ndi mwachindunji kapena mosalunjika pa kusindikiza khalidwe.Kumvetsetsa bwino komanso kudziwa bwino mawonekedwe a pepala, malinga ndi mawonekedwe a mankhwalawo, kugwiritsa ntchito bwino pepala kuti apititse patsogolo luso lazosindikiza, kudzakhala ndi gawo labwino pakukweza.Pepala ili loti mugawane za zomwe zikugwirizana ndi pepala, kuti mufotokozere anzanu:

Mapepala osindikizira

Iliyonse yamitundu yosiyanasiyana yamapepala osindikizidwa omwe ali ndi zinthu zenizeni, kutengera njira yosindikizira.

Mapepala omwe amagwiritsidwa ntchito makamaka posindikiza.Malinga ndi ntchito akhoza kugawidwa mu: newsprint, mabuku ndi periodicals pepala, chivundikiro pepala, zotetezedwa pepala ndi zina zotero.Malinga ndi njira zosiyanasiyana zosindikizira akhoza kugawidwa mu letterpress yosindikiza pepala, gravure printing paper, offset printing paper ndi zina zotero.

1 kuchuluka

Amatanthauza kulemera kwa pepala pagawo lililonse, lofotokozedwa ndi g/㎡, ndiye kuti, kulemera kwa gramu kwa pepala la 1 lalikulu mita.Kuchuluka kwa pepala kumatsimikizira momwe pepala limakhalira, monga kulimba kwamphamvu, kung'ambika, kulimba, kuuma ndi makulidwe.Ichi ndi chifukwa chachikulu chomwe makina osindikizira othamanga kwambiri sali abwino kwa pepala lachulukidwe pansipa 35g/㎡, kotero kuti ndizosavuta kuwoneka pepala losazolowereka, kusindikiza sikuloledwa ndi zifukwa zina.Chifukwa chake, molingana ndi mawonekedwe a zida, kuchuluka kwa magawo osindikizira omwe amagwirizana ndi momwe amagwirira ntchito kumatha kupangidwa, kuti achepetse kugwiritsa ntchito bwino, kupititsa patsogolo zinthu zabwino komanso kusindikiza bwino kwa zida.

2 Makulidwe

Ndi makulidwe a pepala, gawo la muyeso nthawi zambiri limawonetsedwa mu μm kapena mm.Makulidwe ndi kachulukidwe ndi compactness ali ndi ubale wapamtima, ambiri, pepala makulidwe ndi lalikulu, kachulukidwe lolingana mkulu, koma ubale pakati pa awiri si mtheradi.Mapepala ena, ngakhale owonda, amafanana kapena kupitirira makulidwe ake.Izi zikuwonetsa kuti kulimba kwa ulusi wa pepala kumatsimikizira kuchuluka ndi makulidwe a pepala.Kuchokera pamalingaliro osindikizira ndi kulongedza, makulidwe a pepala ndi ofunika kwambiri.Kupanda kutero, zingakhudze pepala lokonzanso zodziwikiratu, kuthamanga kwa kusindikiza ndi mtundu wa inki.Ngati mugwiritsa ntchito makulidwe osiyanasiyana a pepala losindikizidwa, zipangitsa kuti buku lomalizidwa litulutse kusiyana kwakukulu.

3 Kupsinjika

Zimatanthawuza kulemera kwa pepala pa kiyubiki centimita, yofotokozedwa mu g/C㎡.Kulimba kwa pepala kumawerengedwa ndi kuchuluka ndi makulidwe malinga ndi ndondomekoyi: D = G / D × 1000, pamene: G imayimira kuchuluka kwa mapepala;D ndiye makulidwe a pepala.Kulimba ndi muyeso wa kachulukidwe pepala kapangidwe, ngati kwambiri, pepala Chimaona mng'alu, opacity ndi inki mayamwidwe adzakhala kwambiri yafupika, imprinting si kophweka kuti ziume, ndi zosavuta kupanga zomata zakuda pansi chodabwitsa.Choncho, posindikiza mapepala okhala ndi zothina kwambiri, chidwi chiyenera kuperekedwa ku kuwongolera koyenera kwa kuchuluka kwa zokutira inki, ndi kusankha kuuma ndi inki yofananira.

4 Kuuma

Ndi ntchito ya pepala kukana psinjika chinthu china, komanso pepala CHIKWANGWANI minofu akhakula ntchito.Kuuma kwa pepala kumakhala kochepa, kumatha kupeza chizindikiro chomveka bwino.Njira yosindikizira ya letterpress nthawi zambiri imakhala yoyenera kusindikiza ndi pepala lolimba pang'ono, kotero kuti inki yosindikizira imakhala yabwino, komanso kukana kwa mbale zosindikizira kumakhala kwakukulu.

5 Kusalala

Zikutanthauza kuchuluka kwa pepala pamwamba kugunda, unit mu masekondi, kuyezedwa.Mfundo yodziwikiratu ndi: pansi pa vacuum inayake ndi kupanikizika, mpweya wina wodutsa pamwamba pa galasi ndi kusiyana kwachitsanzo pakati pa nthawi yomwe yatengedwa.Kapepala kamakhala kosalala, mpweya umayenda pang'onopang'ono, ndipo mosiyana.Kusindikiza kumafuna mapepala osalala pang'ono, osalala kwambiri, kadontho kakang'ono kamatulutsa mokhulupirika, koma zolemba zonse ziyenera kusamala kuti msanawo usamata.Ngati kusalala kwa pepala kumakhala kochepa, mphamvu yosindikizira yofunikira ndi yayikulu, inki imakhalanso yayikulu.

6 Madigiri a fumbi

Amatanthauza zonyansa pamwamba pa mapepala mawanga, mtundu ndi pepala mtundu pali kusiyana koonekeratu.Digiri ya fumbi ndi muyeso wa zonyansa zomwe zili pamapepala, zomwe zimawonetsedwa ndi kuchuluka kwa madera afumbi mumtundu wina pa lalikulu mita imodzi ya pepala.Fumbi la pepala ndilokwera kwambiri, inki yosindikizira, zotsatira zobala madontho ndizosauka, mawanga onyansa amakhudza kukongola kwa mankhwala.

7 Sizing Degree

Kawirikawiri pepala pamwamba pa kulemba pepala, ❖ kuyanika pepala ndi ma CD pepala aumbike ndi sizing zoteteza wosanjikiza ndi kukana madzi.Momwe mungagwiritsire ntchito sizing, cholembera chogwiritsidwa ntchito choviikidwa mu inki yapadera mumasekondi pang'ono, jambulani mzere papepala, onani m'lifupi mwake osachulukitsa, osakwanira, unit ndi mm.Kukula kwa mapepala ndikokwera, kuwala kwa inki yosindikizira ndikokwera kwambiri, kugwiritsa ntchito inki kochepa.

8 Kudziletsa

Ndiko kukhoza kwa pepala kutenga inki.Kusalala, kupanga mapepala abwino, mayamwidwe a inki ndi ofooka, inki wosanjikiza wouma pang'onopang'ono, komanso yosavuta kumamatira kusindikiza konyansa.M'malo mwake, kuyamwa kwa inki ndikolimba, kusindikiza ndikosavuta kuwumitsa.

9 Pambuyo pake

Zimatanthawuza kuwongolera kwa dongosolo lamapepala.Popanga mapepala, ulusiwo umayenda motsatira njira yotalikirapo pamakina apapepala.Itha kuzindikirika ndi mbali yakuthwa ya ma ukonde.Choyimirira mpaka chopingasa ndi chopingasa.The mapindikidwe phindu la longitudinal pepala tirigu kusindikiza ndi yaing'ono.M'kati mwa kusindikiza kwambewu yamapepala, kusiyanasiyana kwa kukula kumakhala kwakukulu, ndipo mphamvu zolimba ndi kung'ambika ndizochepa.

10 Mlingo Wokulitsa

Zimatanthawuza pepala mu kuyamwa kwa chinyezi kapena kutaya chinyezi pambuyo pa kukula kwa kusiyana.Kufewetsa kwa ulusi wa pepala, kutsika kumangika, kumakulitsa kuchuluka kwa pepala;Kumbali ina, m'munsimu makulitsidwe mlingo.Kuphatikiza apo, kusalala, kupanga mapepala abwino, kukulitsa kwake kumakhala kochepa.Monga pepala lokhala ndi mbali ziwiri, khadi lagalasi ndi pepala la A offset, etc.

11 Porosity

Kawirikawiri, pepala lochepa kwambiri komanso lochepa kwambiri, limakhala lopuma kwambiri.Mphamvu ya mpweya ndi ml/min(millilita pa mphindi) kapena s/100ml(sekondi/100ml), zomwe zikutanthauza kuchuluka kwa mpweya womwe umadutsa mu pepala mu mphindi imodzi kapena nthawi yofunikira kuti udutse mpweya 100ml.Mapepala okhala ndi mpweya waukulu amatha kutulutsa mapepala awiri posindikiza.

12 White Digiri

Zimatanthawuza kuwala kwa pepala, ngati kuwala konse kumawonekera kuchokera papepala, diso lamaliseche limatha kuwona kuti ndi loyera.Kutsimikiza kwa kuyera kwa pepala, nthawi zambiri kuyera kwa magnesium oxide ndi 100% ngati muyezo, tengani pepala lachitsanzo ndi kuwala kwa buluu, kuyera kwa mawonekedwe ang'onoang'ono kumakhala koyipa.Photoelectric whiteness mita ingagwiritsidwenso ntchito kuyeza kuyera kwake.Mayunitsi a whiteness ndi 11 peresenti.Pepala loyera kwambiri, inki yosindikizira imawoneka yakuda, komanso yosavuta kupanga kudzera muzochitikazo.

13 Patsogolo ndi Kumbuyo

Popanga mapepala, zamkati zimawumbidwa ndi kusefedwa ndi kutaya madzi m'thupi pomamatira ku mesh yachitsulo.Mwanjira iyi, monga mbali ya ukonde chifukwa cha kutayika kwa ulusi wabwino ndi zodzaza ndi madzi, kotero kusiya zizindikiro za ukonde, mapepala apamwamba amakhala ochuluka.Ndipo mbali inayo popanda ukonde ndi yabwino.Zosalala, kotero kuti pepala limapanga kusiyana pakati pa mbali ziwiri, ngakhale kupanga kuyanika, kuwala kwa magetsi, pali kusiyana pakati pa mbali ziwirizo.Kuwala kwa pepala ndi kosiyana, komwe kumakhudza mwachindunji kuyamwa kwa inki ndi khalidwe la mankhwala osindikizira.Ngati ndondomeko ya letterpress imagwiritsa ntchito mapepala osindikizira okhala ndi mbali yakumbuyo yakumbuyo, mavalidwe a mbale adzawonjezeka kwambiri.Kutsogolo kwa kupanikizika kwa pepala losindikizira ndikopepuka, kugwiritsa ntchito inki kumakhala kochepa.