Thermal printers tau siv dav, tab sis tsis yog txhua tus paub tias lawv ua haujlwm li cas.Kev sib xyaw ntawmthermal tshuab luam ntawvthiab cov ntawv thermal tuaj yeem daws tau peb cov kev xav tau luam ntawv txhua hnub.Yog li cas lub tshuab luam ntawv thermal ua haujlwm li cas?
Feem ntau, cov khoom siv hluav taws xob semiconductor tau nruab rau ntawm lub taub hau ntawm lub tshuab luam ntawv thermal.Lub taub hau luam ntawv yuav sov thaum nws ua haujlwm.Tom qab tiv tauj nrog cov ntawv thermal, cov qauv tuaj yeem luam tawm.Cov ntawv thermal yog them nrog ib txheej ntawm pob tshab zaj duab xis.Thermal tshuab luam ntawvmuaj kev xaiv.Cov ntawv thermal yog rhuab ntawm ib qho chaw, thiab los ntawm cua sov, cov tshuaj tiv thaiv yog tsim nyob rau hauv cov yeeb yaj kiab los tsim cov duab, cov ntsiab lus zoo ib yam li lub tshuab fax.Lub tshuab cua sov yog qhov tsim nyog los ntawm lub tshuab luam ntawv hauv daim ntawv square dots lossis strips.Thaum tsav tsheb, ib daim duab sib thooj rau cov khoom cua sov yog tsim rau ntawm daim ntawv thermal.
Thermal paper yog ib hom tshwj xeeb ntawm cov ntawv txheej txheem coated uas nws cov tsos zoo ib yam li cov ntawv dawb.Qhov saum npoo ntawm cov ntawv thermal yog du thiab yog ua los ntawm cov ntawv zoo tib yam li cov ntawv hauv paus, thiab txheej txheej ntawm cov ntawv kub-rhiab chromophoric txheej yog coated rau saum npoo ntawm daim ntawv zoo tib yam.Nws yog hu ua leuco dye), uas tsis sib cais los ntawm microcapsules, thiab cov tshuaj tiv thaiv tshuaj yog nyob rau hauv lub xeev "latent".Thaum cov ntawv thermal ntsib lub taub hau kub luam ntawv, tus tsim xim thiab cov leuco dye ntawm qhov chaw uas lub taub hau luam tawm chemically reacts thiab hloov xim rau cov duab thiab cov ntawv.
Thaum cov ntawv thermal muab tso rau hauv ib puag ncig siab dua 70 ° C, thermal txheej pib hloov xim.Yog vim li cas rau nws discoloration kuj pib los ntawm nws muaj pes tsawg leeg.Muaj ob lub ntsiab thermal Cheebtsam hauv thermal ntawv txheej: ib qho yog leuco dye lossis leuco dye;lwm tus yog xim tsim.Hom ntawv thermal no tseem hu ua ob-cov khoom siv tshuaj thermal recording paper.
Feem ntau siv los ua leuco dyes yog: siv lead ua violet lactone (CVL) ntawm trityl phthalide system, fluoran system, tsis muaj xim benzoylmethylene xiav (BLMB) lossis spiropyran system.Feem ntau siv los ua cov xim tsim tawm yog: para-hydroxybenzoic acid thiab nws cov esters (PHBB, PHB), salicylic acid, 2,4-dihydroxybenzoic acid los yog aromatic sulfones thiab lwm yam tshuaj.
Thaum cov ntawv thermal yog rhuab, leuco dye thiab tus tsim tawm teb cov tshuaj lom neeg los tsim cov xim, yog li thaum cov ntawv thermal siv tau txais cov cim ntawm lub tshuab fax lossis luam tawm ncaj qha nrog ib daim ntawv thermal.thermal tshuab luam ntawv, cov duab thiab cov ntawv tso tawm kom pom.Txij li thaum muaj ntau ntau yam ntawm leuco dyes, cov xim ntawm cov ntawv sau qhia txawv, xws li xiav, ntshav, dub thiab lwm yam.
Lub sij hawm xa tuaj: Mar-18-2022