Makina ochapira akale amtunduwu amaphatikiza chithumwa chamakono ndi magwiridwe antchito amakono. Wopangidwa kuchokera mkuwa wokhala ndi patina wakale, amakwanira masitayelo osiyanasiyana azipinda zochapira ndipo amapezeka m'mapangidwe angapo, kuphatikiza mitundu yogwiritsira ntchito pawiri yokhala ndi zowongolera zapadera zamakina ochapira komanso kuyeretsa tsiku ndi tsiku. Imagwirizana ndi maulalo onse a 4-point ndi 6-point, imakulitsa zokometsera komanso zothandiza za malo anu ochapira.