Ana amfani da firinta na thermal, amma ba kowa ya san yadda suke aiki ba.Haɗin kaithermal printerkuma takarda mai zafi na iya magance buƙatun mu na yau da kullun.To ta yaya na'urar firinta ta thermal ke aiki?
Gabaɗaya, ana shigar da nau'in dumama semiconductor akan bugu na firinta na thermal.Shugaban buga zai yi zafi lokacin da yake aiki.Bayan tuntuɓar takarda ta thermal, ana iya buga wani tsari.An rufe takarda ta thermal tare da fim mai haske.Thermal printerssuna da zaɓuɓɓuka.Ana yin zafi da takarda mai zafi a wani matsayi, kuma ta hanyar dumama, ana haifar da halayen sinadaran a cikin fim don samar da hoto, ka'idar tana kama da na'urar fax.Na'urar dumama dumama ana sarrafa ta ta hanyar dabara ta firinta a cikin nau'i na dige-dige murabba'i ko tube.Lokacin da aka tuƙi, ana samar da hoto mai dacewa da kayan dumama akan takarda mai zafi.
Takarda thermal wata takarda ce ta musamman mai rufaffiyar takarda wacce kamanninta yayi kama da farar takarda na yau da kullun.Fuskar takarda ta thermal mai santsi ne kuma an yi ta da takarda ta yau da kullun a matsayin tushe na takarda, kuma an lulluɓe wani Layer na chromophoric mai tsananin zafi a saman takardar.Ana kiransa rini na leuco), wanda ba a raba shi da microcapsules, kuma halayen sinadaran yana cikin yanayin "latent".Lokacin da takarda ta thermal ta ci karo da kan bugu mai zafi, mai haɓaka launi da rini na leuco a wurin da rubutun kan buga sinadari yana canza launi don samar da hotuna da rubutu.
Lokacin da aka sanya takarda ta thermal a cikin yanayi sama da 70 ° C, murfin thermal ya fara canza launi.Dalilin canza launinsa kuma yana farawa daga abubuwan da ke tattare da shi.Akwai manyan abubuwa guda biyu na thermal a cikin takarda mai zafi: ɗaya shine rini na leuco ko rini na leuco;ɗayan shine mai haɓaka launi.Irin wannan takarda mai zafi kuma ana kiranta takarda mai rikodin zafi mai nau'in nau'in sinadarai guda biyu.
Mafi yawan amfani da rini na leuco sune: crystal violet lactone (CVL) na tsarin trityl phthalide, tsarin fluoran, benzoylmethylene blue (BLMB) mara launi ko tsarin spiropyran.Yawanci ana amfani da su azaman wakilai masu haɓaka launi sune: para-hydroxybenzoic acid da esters (PHBB, PHB), salicylic acid, 2,4-dihydroxybenzoic acid ko sulfones aromatic da sauran abubuwa.
Lokacin da takarda mai zafi ya yi zafi, rini na leuco da mai haɓaka suna mayar da martani ta hanyar sinadarai don samar da launi, don haka lokacin da aka yi amfani da takarda mai zafi don karɓar sakonni a kan na'urar fax ko buga kai tsaye tare dathermal printer, zane-zane da rubutu suna nunawa.Tun da akwai nau'ikan rini na leuco da yawa, launi na rubutun hannu da aka nuna ya bambanta, ciki har da shuɗi, purple, baki da sauransu.
Lokacin aikawa: Maris 18-2022