Awekho ama-carcinogens ku-toner, futhi uma ukhetha ngephutha i-toner yekhwalithi ephansi, kuzoba nezinto eziyingozi kakhulu noma ezingaphansi kuyo; Ngaphezu kwalokho, i-toner ephansi izothinta ngokuqondile umphumela wokukopisha, okuholela kumbala wengemuva oshubile ekhophi nasemathunzini ahlukene ombhalo wesandla; Okubaluleke nakakhulu, i-toner ephansi izophinde ibangele ukuguga nokudabuka okuqhubekayo ku-cartridge ye-toner ngaphakathi kwe-copier, uma i-fuser roller yomkhiqizi we-copier toner ingcoliswe i-toner, ngokuvamile izokhipha uthuli ngaphakathi kwe-copier, futhi lezi zintuli uma ziwela phezu. ibhodi lesifunda elisebenzayo le-copier, kulula ukuba nesifunda esifushane, ngaleyo ndlela kulimaze umkopishi.
I-Toner, ingxenye eyinhloko yikhabhoni, kukhona futhi eziningi ezakhiwe ngama-binder kanye ne-resin, ngesikhathi lapho ikhophi isizoqedwa, i-toner izoncibilika ku-fiber yephepha ngokushisa okuphezulu okungaba ngu-200 degrees Celsius, futhi ingxenye ye-resin yomkhiqizi we-copier toner izofakwa i-oxidized ibe igesi eqinile, empeleni okuyi-ozone esivame ukubhekisela kuyo. Akuwona wonke amathoni abukeka afana, futhi akuwona wonke amathoni aphrinta okufanayo, ukuma kwe-toner kunquma umphumela wokuphrinta.