Patent ID: 8712309
Filing Date: 2014-04-29
Classification: G03G

Abstract:
1. A cleaning device for cleaning a moving surface of a cleaning target, comprising: a laminated blade member including multiple layers, each of which is made of materials different in permanent set value, the multiple layers including an edge layer formed of a material higher in permanent set value than any other one of the materials of the multiple layers and a backing layer disposed against a distal surface of the edge layer; and a holding member to hold a distal edge of the laminated blade member, a proximal edge portion of the edge layer of the blade member being brought into contact with the moving surface of the cleaning target, the laminated blade member including a leading edge on which the edge portion thereof is located and a trailing edge where the holding member supports the blade member, a ratio of a thickness of the edge layer to a thickness of the backing layer at the trailing edge of the blade member being smaller than a ratio of the layer thickness of the edge layer to the layer thickness of the backing layer at the leading edge of the blade member, wherein a length of the backing layer from the leading edge of the laminated blade member to the trailing edge of the laminated blade member is equal to or greater than a length of the edge layer from the leading edge of the laminated blade member to the trailing edge of the laminated blade member.