Image forming apparatus, toner supplying method, and computer program product

A toner supplying method comprising:

• developing an electrostatic latent image formed on an image carrying body by using toner stored in a developing unit;
• detecting whether an amount of the toner stored in the developing unit is equal to or less than a threshold value;
• firstly supplying the toner to the developing unit from a toner supplying unit by driving a driving unit for a correction driving time, when it is detected that the amount of the toner stored in the developing unit is equal to or less than the threshold value;
• calculating an amount of toner consumption from when the toner is supplied to the developing unit to when it is detected that the amount of the toner stored in the developing unit is equal to or less than the threshold value;
• and
• secondarily supplying the toner to the developing unit from the supplying unit by calculating a unit amount of toner supply which corresponds to an amount supplied in a case of driving the driving unit for a unit driving time, from the correction driving time and the amount of toner consumption, and driving the driving unit on the basis of the calculated unit amount of toner supply.

A computer program product comprising a non-transitory computer-readable medium having computer-readable program codes embedded therein for controlling a toner supplying by a computer, the program codes when executed causing the computer to execute:

• developing an electrostatic latent image formed on an image carrying body by using toner stored in a developing unit;
• detecting whether an amount of the toner stored in the developing unit is equal to or less than a threshold value;
• firstly supplying the toner to the developing unit from a toner supplying unit by driving a driving unit for a correction driving time, when it is detected that the amount of the toner stored in the developing unit is equal to or less than the threshold value;
• calculating an amount of toner consumption from when the toner is supplied to the developing unit to when it is detected that the amount of the toner stored in the developing unit is equal to or less than the threshold value;
• and
• secondarily supplying the toner to the developing unit from the supplying unit by calculating a unit amount of toner supply which corresponds to an amount supplied in a case of driving the driving unit for a unit driving time, from the correction driving time and the amount of toner consumption, and driving the driving unit on the basis of the calculated unit amount of toner supply.