Cleaning member, charging device, transfer device and image forming apparatus

Abstract

The present invention provides a cleaning member including melamine resin foam in at least a portion that contacts an object to be cleaned. A charging device and a transfer device including the cleaning member are provided as well. An image forming apparatus including at least the cleaning member is also provided. In the image forming apparatus the cleaning member cleans at least one of a charge roll of the charging device, an image carrier, and a transfer roll of the transfer device.

What is claimed is: 
     
       1. A cleaning member for cleaning an object that is at least one of an image carrier, a charging member and a transfer member, the cleaning member comprising:
 a conductive melamine resin foam in at least a portion thereof that contacts the object to be cleaned, wherein the conductive melamine resin foam has a three-dimensional mesh structure, and the cleaning member is formed in a roller shape and is a conductive member. 
 
     
     
       2. The cleaning member according to  claim 1 , wherein the cleaning member is formed in a pad shape or a roller shape. 
     
     
       3. The cleaning member according to  claim 2 , wherein the cleaning member is an insulative material. 
     
     
       4. The cleaning member according to claim  2  1, wherein the cleaning member is a conductive member and can be used as a charging member. 
     
     
       5. The cleaning member according to  claim 4 , wherein the conductive property of the cleaning member is provided by impregnating the cleaning member with a conductive varnish. 
     
     
       6. The cleaning member according to  claim 5 , wherein the cleaning member is disposed to freely approach and/or separate from the object to be cleaned. 
     
     
       7. The cleaning member transfer device according to claim  6  13, wherein the cleaning member is disposed to move reciprocally in an axis direction of the object to be cleaned transfer roller. 
     
     
       8. The cleaning member according to  claim 7 , wherein a cleaning bias is applied to the cleaning member. 
     
     
       9. An image forming apparatus comprising the cleaning member according to  claim 1 , wherein a spherical toner is used as a developing agent. 
     
     
       10. The image forming apparatus according to  claim 9 , wherein a surface layer of the image carrier has a charge transportation property and comprises a siloxane based resin having a cross-linking structure. 
     
     
       11. A charging device comprising:
 a charge roller; and 
 a cleaning member for cleaning an object the charge roller, the cleaning member comprising a conductive melamine resin foam in at least a portion thereof that contacts the object to be cleaned charge roller, wherein the conductive melamine resin foam has a three-dimensional mesh structure; and a charge roller, and the cleaning member is formed in a roller shape and is a conductive member. 
 
     
     
       12. The charging device according to  claim 11 , wherein the cleaning member is disposed to freely approach and/or separate from a surface of the charge roller. 
     
     
       13. A transfer device comprising:
 a transfer roller; and 
 a cleaning member for cleaning an object the transfer roller, the cleaning member comprising a conductive melamine resin foam in at least a portion thereof that contacts the object to be cleaned transfer roller, wherein the conductive melamine resin foam has a three-dimensional mesh structure; and 
 a transfer roller, and the cleaning member is formed in a roller shape and is a conductive member. 
 
     
     
       14. The transfer device according to  claim 13 , wherein the cleaning member is disposed to freely approach and/or separate from a surface of the transfer roller. 
     
     
       15. The cleaning member according to claim 1, wherein the cleaning member has an electric resistance of from 10 3  to 10 10  Ω. 
     
     
       16. The cleaning member according to claim 1, comprising:
 a core; and   an outer circumferential sheet laminated on an outer circumferential surface of the core, the outer circumferential sheet comprising the conductive melamine resin foam as a portion thereof that contacts the object to be cleaned.   
     
     
       17. The cleaning member according to claim 1, wherein the conductive melamine resin foam comprises melamine resin foam impregnated with a conductive varnish. 
     
     
       18. The transfer device according to claim 13, wherein the conductive melamine resin foam comprises melamine resin foam impregnated with a conductive varnish. 
     
     
       19. The charging device according to claim 11, wherein the cleaning member comprises:
 a core; and   an outer circumferential sheet laminated on an outer circumferential surface of the core, the outer circumferential sheet comprising the conductive melamine resin foam as a portion thereof that contacts the charge roller.   
     
     
       20. The charging device according to claim 11, wherein the conductive melamine resin foam comprises melamine resin foam impregnated with a conductive varnish.