Patent ID: 9395647
Filing Date: 2016-07-19
CPC Classification: G03G

Claim Text:
1. An image forming apparatus comprising: an image bearing member on which a toner image is formed; an image forming section configured to form the toner image by attaching toner mixed with lubricant to the image bearing member, and transfer the toner image formed on the image bearing member to a sheet; a computing section configured to compute a time average value of a coverage of the toner image transferred to the sheet by the image forming section for each of a plurality of different time periods; and a control section configured to control the image forming section to form a toner image of a pattern for forcible toner ejection on the image bearing member in accordance with a result of computing of the computing section, wherein the plurality of different time periods comprise a first time period averaged to determine a first time average value and a second time period averaged to determine a second time average value, and the control section determines the relationship between the first time average value and the second average value, and controls the image forming section to form the toner image of the pattern for forcible toner ejection based on the relationship between the first time average value and the second average value.