Patent ID: 9483013
Filing Date: 2016-11-01
CPC Classification: G03G

Claim Text:
1. An image forming apparatus, comprising: a first image forming unit comprising a first image bearing member, a first cleaning roller comprising a first roller shaft and a first rotating member configured to rotate about the first roller shaft and configured to rub a surface of the first image bearing member, and a first urging spring configured to directly urge the first roller shaft of the first cleaning roller in a direction directed from the first roller shaft toward the first image bearing member; a second image forming unit comprising a second image bearing member, a second cleaning roller comprising a second roller shaft and a second rotating member configured to rotate about the second roller shaft and configured to rub a surface of the second image bearing member, and a second urging spring configured to directly urge the second roller shaft of the second cleaning roller in a direction directed from the second roller shaft toward the second image bearing member; and a transfer unit configured to transfer a developer on the first image bearing member and the second image bearing member onto a recording sheet, wherein the first image forming unit is disposed upstream of the second image forming unit in a direction in which the recording sheet is conveyed, and wherein a contact pressure, caused by an urged force of the second roller shaft of the second cleaning roller, at which the second rotating member is in contact with the second image bearing member is less than a contact pressure caused by an urged force of the first roller shaft of the first cleaning roller, at which the first rotating member is in contact with the first image bearing member.