The invention provides a toner, a developer, a toner storage container, a processing box, and an image forming device. The toner keeps small grain size with narrow distribution and excellent mobility. When the toner is fixation, the dirt on the back of the print paper is reduced. Moreover, little film formation is happened, and the selectivity of the paper amide fixation is excellent, with excellent mobility, replenishment, and transfer print efficiency and with low temperature fixation and heat-resisting property, thereby obtaining the image having high definition. The toner is obtained by emulsifying or dispersing toner material in a water-system medium and then carrying out pelleting. The toner contains a hydrocarbon-system wax and bonding resin. The mass of the hydrocarbon-system wax is reduced below 10% at the temperature of 165 DEG C. Moreover, the viscosity Eta of the toner measured by a rheometer and the wax seepage W amid fixation satisfy the following formula (1): 40>= Eta*(W-0.18)>=13.