Patent ID: 7885566
Filing Date: 2011-02-08
Classification: G03G

Abstract:
1. A toner consumption-calculating apparatus that calculates toner consumption that indicates toner amount that is consumed due to adhering on a latent image-bearing member in a developing area where the latent image-bearing member and a developing unit are positioned opposite to each other, the toner consumption-calculating apparatus comprising: a latent image portion toner consumption-calculating unit that calculates, from a latent image that is formed on the latent image-bearing member, latent image portion toner consumption in a dot portion on which toner is to be adhered, wherein the latent image portion toner consumption in one dot in the dot portion is calculated based on dot data of dots that include the one dot and dots adjacent to the one dot, and that have a size of at least two dots in a vertical scanning direction, wherein the latent image portion toner consumption-calculating unit integrates values of the dot data corresponding to each dot that is developed within a predetermined time period, carries out, on the integrated value, a correcting process that corrects a nonlinearity between a dot size and toner adhesion amount, and calculates the latent image portion toner consumption that is used to develop the dot portion within the time period, and the latent image portion toner consumption-calculating unit calculates the latent image portion toner consumption C from where A 1 is a printed portion area, A 2 is a difference between a latent image portion area and the printed portion area, W 1 is a toner consumption in A 1 , and W 2 is a toner consumption in A 2 .