Koj tuaj yeem qhia tau li cas yog tias daim ntawv yog thermal ntawv?

Nws yog qhov yooj yim tshaj plaws los txheeb xyuas yog tias nws yog daim ntawv thermal. Txhawm rau kom ntseeg tau tias koj muaj daim ntawv thermal zoo, ua qhov kev kuaj kos ntawm ob sab thiab saib seb koj puas tuaj yeem pom cov cim dub. Yog tias, tom qab khawb, koj tsis pom cov dots dub lossis kev lag luam ntawm ob sab, ces nws tsis yog ntawv thermal.
Thermal paper yog ib daim ntawv tshwj xeeb coated nrog cov tsos zoo ib yam li cov ntawv dawb. Cov ntawv thermal muaj ib tug du nto thiab yog coated nrog ib tug thermal txheej, ob qho tib si nyob rau saum npoo ntawm daim ntawv zoo tib yam, siv cov ntawv zoo tib yam raws li daim ntawv puag. Cov xim-emitting txheej muaj binder, xim tsim, thiab xim tsis muaj xim (los yog zais xim dye), uas tsis sib cais los ntawm microcapsules thiab cov tshuaj tiv thaiv yog nyob rau hauv lub xeev latent. Thaum cov ntawv thermal ntawv kov lub taub hau thermal print, nws reacts chemically nrog tus tsim xim thiab cov xim tsis muaj xim.