Patent ID: 9008524
Filing Date: 2015-04-14
Classification: G03G

Abstract:
1. An image forming device that develops, with a toner, an electrostatic latent image formed on an image carrying member based on image information and that transfers a developed toner image to a recording member to form the image on the recording member, the mage forming device comprising: a developer carrying member that carries a developer containing the toner and a carrier on a surface, and that rotates and transports the developer to a position opposite the image carrying member to develop, with the toner, the electrostatic latent image formed on the image carrying member; a development device that includes the developer carrying member and a developer transport unit which transports, while agitating and mixing the developer, the developer to feed the developer to the developer carrying member; a toner storage portion that stores the toner which is supplied to a transport region of developer transport unit of the development device; a calculation unit that calculates, per image formation operation, from the image information, an amount of the toner consumed for the development of the electrostatic latent image for each of a plurality of imaginary regions divided at predetermined intervals in a direction of a rotation shaft of the developer carrying member; and a toner supply control portion that controls an amount of the toner supplied from the toner storage portion to the development device and supply timing, wherein the toner supply control portion supplies, to the development device, the same amount of the toner as the amount of the toner consumed in each of the imaginary regions when the development is performed that is calculated by the calculation unit, earlier by a time in which the toner supplied from the toner storage portion is transported to each of imaginary regions than at the time of the development of the electrostatic latent image in each imaginary region.