Toner consumption-calculating apparatus, image forming apparatus, and toner consumption calculating method

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, based on dot data related to a size of at least two dots in a vertical scanning direction of a dot portion on which toner is to be adhered, latent image portion toner consumption, 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.

A method of calculating toner consumption, the toner consumption indicating toner amount 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 method comprising:

• calculating the toner consumption by using an area of a printed portion of image data of a latent image that is formed on the latent image-bearing member and an area of a latent image portion on the latent image-bearing member.