Image forming apparatus
AssigneeSharp Kabushiki Kaisha
InventorYuusuke Itagaki
Life of this patent
Estimating the term…
Abstract
An image forming apparatus includes a weight detection sensor and a CPU (notification control section, weight calculation section and full-capacity amount correction section). The CPU calculates weight of toner in a waste toner container based on image formation history information including the number of image-forming sheets. When weight of toner in the waste toner container detected by the weight detection sensor reaches a semi full-capacity amount, the CPU makes a comparison of a detection value detected by the weight detection sensor with a calculation value calculated by the CPU and corrects a weight value in a full-capacity state with a correction value set based on a result of the comparison.
Claims6
An image forming apparatus, comprising:
- a waste toner container that collects and stores toner remaining on a surface of an image bearing member after a transferring step;
- a weight detection section that measures a weight of the waste toner container so as to detect a weight of toner in the waste toner container;
- a notification control section that, when the weight of the toner in the waste toner container detected by the weight detection section reaches a predetermined full-capacity amount, and when the weight of the toner in the waste toner container detected by the weight detection section reaches a predetermined semi full-capacity amount, the semi full-capacity amount being smaller than the full-capacity amount, makes a notification as such to a user;
- a weight calculation section that calculates a weight of the toner in the waste toner container based on image formation history information including the number of image-forming sheets;
- and
- a full-capacity amount correction section that, when the weight of the toner in the waste toner container detected by the weight detection section reaches the predetermined semi full-capacity amount, makes a comparison of a detection value detected by the weight detection section with a calculation value calculated by the weight calculation section which is based on the image formation history information that is collected before the weight of the toner in the waste toner container as detected by the weight detection section reaches the predetermined semi full-capacity amount, and corrects the pre-determined full-capacity amount with a correction value set based on a result of the comparison.
Dependencies are inferred from the claim text.