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Daim ntawv kev ua tau zoo hauv offset lithography yog tswj hwm los ntawm tsib qhov sib txawv ntawm qhov sib txawv: cov neeg ua haujlwm, tshuab, cov ntaub ntawv, cov txheej txheem, thiab ib puag ncig ("5M" lub moj khaum). Raws li cov khoom siv tseem ceeb, daim ntawv zoo ncaj qha cuam tshuam rau kev luam ntawv ncaj ncees, kev ua tau zoo, thiab kev tsim khoom pov tseg. Cov parameter tseem ceeb muaj xws li:
a) Nto Smoothness
Smoothness qhia txog qhov sib xws ntawm daim ntawv micro-topography thiab txiav txim siab hloov cov cwj mem zoo ntawm daim pam thiab substrate. Suboptimal smoothness ua rau:
- Tsis yog-cov xim xim xim xim tuab, ua rau cov dot nce ntxiv thiab txo cov tonal fidelity;
- Cov cwj mem tsis tiav, ua rau ntug qhov muag tsis pom kev, ua kom pom qhov poob, thiab hais tawm cov dot tawm.
b) Compressibility thiab elastic rov qab
Optimal compressibility enables conformal kev sib cuag nrog lub tswv yim lub tog raj kheej nyob rau hauv lub siab, thaum ceev elastic rov qab ua kom ruaj ntseg nyob rau hauv multicolor passes. Kev rov qab tsis txaus ua rau cov ntawv sib sau deformation, cuam tshuam rau kev sau npe raug thiab ua kom - sijhawm npaj.
c) Nto lub zog
Txhais raws li cov cohesive/adhesive daim ntawv cog lus kev ncaj ncees ntawm nto fibers, fillers, binders, thiab txheej txheej, tsis txaus deg zog manifests li:
- Xaiv thiab linting- ua rau cov npoo dawb, cov ntawv tsis muaj, lossis qhov muag plooj ("roughening");
- Kev sib kis ntawm cov pam vov thiab cov menyuam yaus nrog cov ntawv plua plav thiab cov khib nyiab pov tseg, yuav tsum tau tu ntau zaus thiab txo lub sijhawm ua haujlwm.
d) Cov yam ntxwv pH
Daim ntawv pH cuam tshuam nrog cov tshuaj tua kab mob (cov phiaj xwm: pH 4.8-5.2). Acid cov ntaub ntawv ceev cov number case kom qhuav tab sis pheej yig phaj corrosion thiab inhibit oxidative zaj duab xis tsim; Cov ntaub ntawv alkaline neutralize acidic dampening kev daws teeb meem, txhawb cov number case emulsification, scumming, thiab txo qhov sib piv. Raws li pH tswj yog li ntawd tseem ceeb rau kev ruaj ntseg xovxwm.
