A cleaning device comprising: a housing that has formed therein an opening facing an image carrying member carrying a toner image and a toner storage portion configured to store toner removed from a surface of the image carrying member; a cleaning member that is arranged at a position opposite the image carrying member; a collection roller configured to collect toner attached to the cleaning member; a blade configured to scrape off toner attached to the collection roller while in contact with the collection roller on a downstream side of the cleaning member with respect to a rotation direction of the collection roller; a sheet member that is arranged over an entire range of the collection roller in a longitudinal direction thereof on the downstream side of the cleaning member and on an upstream side of the blade with respect to the rotation direction of the collection roller so as to divide between the toner storage portion and the opening; and a sealing member that is arranged so as to be in contact with the housing and both end parts of a circumferential surface of the collection roller in an axial direction and is configured to prevent toner from leaking out of a gap between the housing and the collection roller, the cleaning device being configured to remove toner left unused on the surface of the image carrying member, characterized in that a first region that has a predetermined surface roughness is formed in a middle part of the circumferential surface of the collection roller in the axial direction, and a second region that has a lower surface roughness, in terms of ten-point average roughness Rz, than the first region is formed next to both end parts of the first region in the axial direction, the second region being formed so as to overlap, in the axial direction of the collection roller, at least a contact part between the collection roller and the sealing member, the surface roughness in the first region being, in terms of ten-point average roughness Rz, equal to or more than 4 μm but equal to or less than an average particle diameter of the toner. a housing that has formed therein an opening facing an image carrying member carrying a toner image and a toner storage portion configured to store toner removed from a surface of the image carrying member; an opening facing an image carrying member carrying a toner image and a toner storage portion configured to store toner removed from a surface of the image carrying member; a cleaning member that is arranged at a position opposite the image carrying member; a collection roller configured to collect toner attached to the cleaning member; a blade configured to scrape off toner attached to the collection roller while in contact with the collection roller on a downstream side of the cleaning member with respect to a rotation direction of the collection roller; a sheet member that is arranged over an entire range of the collection roller in a longitudinal direction thereof on the downstream side of the cleaning member and on an upstream side of the blade with respect to the rotation direction of the collection roller so as to divide between the toner storage portion and the opening; and a sealing member that is arranged so as to be in contact with the housing and both end parts of a circumferential surface of the collection roller in an axial direction and is configured to prevent toner from leaking out of a gap between the housing and the collection roller, the cleaning device being configured to remove toner left unused on the surface of the image carrying member, characterized in that a first region that has a predetermined surface roughness is formed in a middle part of the circumferential surface of the collection roller in the axial direction, and a second region that has a lower surface roughness, in terms of ten-point average roughness Rz, than the first region is formed next to both end parts of the first region in the axial direction, the second region being formed so as to overlap, in the axial direction of the collection roller, at least a contact part between the collection roller and the sealing member, the surface roughness in the first region being, in terms of ten-point average roughness Rz, equal to or more than 4 μm but equal to or less than an average particle diameter of the toner.