Toner, wanda kuma aka sani da toner, wani abu ne na foda da ake amfani da shi a cikin firintocin laser don ɗaukar hoto akan takarda. Silinda foda na mai kwafin ya ƙunshi guduro haɗin gwiwa, baƙar fata carbon, wakili mai sarrafa caji, ƙari na waje da sauran abubuwan haɗin gwiwa. Toner mai launi kuma yana buƙatar ƙara pigments na wasu launuka. Lokacin da aka buga toner, saboda ragowar monomer a cikin resin da zafi ya canza, zai haifar da wari mai daɗi, don haka matakan ƙasa da ka'idodin masana'antu suna da tsauraran hani akan TVOC na toner. Don haka idan dai ka sayi na'urar firinta ko toner na ingancin karbuwa, ba za ka samar da iskar gas mai cutarwa daga bugu ba.

Hanyar polymerization ita ce fasaha ta toner mai kyau na sinadarai, wanda ya hada da (dakatar da polymerization, emulsion polymerization, loading microcapsules, dispersion polymerization, compression polymerization, chemical powdering. Ana kammala hanyar polymerization a cikin lokaci na ruwa don samar da toner tare da ƙananan zafin jiki na narkewa, wanda zai iya yin tasiri). saduwa da bukatun fasaha na zamani don kiyayewa da makamashi da kare muhalli ta hanyar daidaitawa da sashi na rarrabawa, saurin motsawa, lokaci na polymerization da maida hankali na bayani, ana sarrafa girman ƙwayar toner don cimma daidaiton nau'i, launi mai kyau da kuma nuna gaskiya polymerization yana da kyau barbashi siffar, a finer barbashi size, kunkuntar size rarraba da kyau flowability Yana iya saduwa da bukatun na zamani bugu fasahar kamar babban gudun, high ƙuduri da launi.