Palibe ma carcinogens mu tona, ndipo ngati mwasankha mwangozi tona yotsika, padzakhala zinthu zowononga kwambiri; Kuphatikiza apo, tona yocheperako imakhudza mwachindunji kukopera, zomwe zimapangitsa kuti pakhale utoto wokulirapo pamakope ndi mitundu yosiyanasiyana ya zolembazo; Chofunika kwambiri, tona yotsika imapangitsanso kung'ambika kosalekeza pa cartridge ya toner mkati mwa copier, ngati fuser roller ya copier toner wopanga ili ndi tona, nthawi zambiri imatulutsa fumbi mkati mwa copier, ndipo fumbi izi zikangogwa. gulu logwira ntchito la copier, n'zosavuta kukhala ndi dera lalifupi, potero kuwononga makina osindikizira.
Tona, chigawo chachikulu ndi kaboni, palinso ambiri amapangidwa ndi zomangira ndi utomoni, pa nthawi pamene kukopera kwatsala pang'ono kumalizidwa, tona adzasungunuka mu ulusi pepala ndi kutentha kwambiri pafupifupi 200 digiri Celsius, ndipo gawo la utomoni la wopanga ma copier toner lidzasinthidwa kukhala mpweya wowopsa, womwe kwenikweni ndi ozoni yomwe timatchula nthawi zambiri. Sikuti ma toner onse amawoneka ofanana, ndipo si ma toner onse omwe amasindikiza chimodzimodzi, mawonekedwe a toner amatsimikizira kusindikiza.