Inki pen orisun jẹ iṣelọpọ nipasẹ ọwọ ni idanileko lati oriṣi awọn eroja aise ti a yan fun iduroṣinṣin ati iṣẹ.Awọn inki wa ni idapọ pẹlu diluent, thickener, huctant, lubricant, surfactant, preservative, ati awọ.Awọn eroja ti wa ni idapọ daradara ati isọdọtun lori aijọju awọn igbesẹ mejila mejila pẹlu o kere ju awọn igbesẹ idapọmọra mẹta ni kikun fun awọ lati rii daju didara ati aitasera laarin gbogbo ipele kekere.