PS phaj

Lub ntsiab lus ntawm PS phaj yog pre-sensitized phaj siv hauv offset printing. Nyob rau hauv offset printing, cov duab yuav tsum tau luam tawm los ntawm ib tug coated txhuas ntawv, muab tso rau ib ncig ntawm lub cylinder luam ntawv. Cov txhuas yog kho kom nws qhov chaw yog hydrophilic (tsim dej), thaum tsim PS phaj txheej yog hydrophobic.
PS phaj muaj ob hom: zoo PS phaj thiab tsis zoo PS phaj. Ntawm lawv, zoo PS phaj nyiaj rau qhov sib faib loj, uas yog siv rau hauv feem ntau ntawm nruab nrab mus rau loj-scale luam ntawv ua hauj lwm hnub no. Nws ua tshuab kuj matured.
PS phaj yog ua los ntawm substrate thiab PS phaj txheej, uas yog, txheej txheej photosensitive. Lub substrate feem ntau yog aluminium puag phaj. Cov txheej txheej photosensitive yog txheej txheej tsim los ntawm txheej cov kua photosensitive ntawm lub phaj phaj.
Nws cov khoom tseem ceeb yog photosensitizer, zaj duab xis-tsim tus neeg saib xyuas thiab tus neeg sawv cev pabcuam. Cov photosensitizer feem ntau siv nyob rau hauv zoo PS daim hlau yog soluble diazonophthoquinone hom photosensitive resin thaum uas nyob rau hauv tsis zoo PS phaj yog insoluble azide-raws li photosensitive resins.
Qhov zoo PS phaj muaj qhov zoo ntawm lub teeb yuag, kev ua haujlwm ruaj khov, cov duab meej, cov khaubncaws sab nraud povtseg, thiab kev luam ntawv zoo. Nws invention thiab daim ntawv thov yog ib qho kev hloov loj hauv kev lag luam luam ntawv. Tam sim no, PS phaj tau sib xyaw nrog cov khoom siv hluav taws xob, kev sib cais xim hluav taws xob, thiab ntau xim offset luam ntawv, uas tau dhau los ua cov txheej txheem platemaking tseem ceeb niaj hnub no.