Cleaning blade for use in image-forming apparatus

• US 20070078218A1
• Filed: 09/13/2006
• Published: 04/05/2007
• Est. Priority Date: 10/04/2005
• Status: Active Grant

• Current Assignee: Sumitomo Rubber Industries Limited
• Original Assignee: Sumitomo Rubber Industries Limited
• Inventors: Sugimoto, Mutsuki
• Granted Patent: US 7,714,059 B2
• Time in Patent Office: Days
• US Class Current: 524/565
• CPC Class Codes: G03G 21/0017 Details relating to the internal structure or chemical composition of the blades

Abstract

A cleaning blade, for use in an image-forming apparatus, formed by molding a resin composition containing a rubber component consisting of a thermosetting elastomer containing acrylonitrile as a constituent monomer thereof and having a bound acrylonitrile amount at 15 to 50%.

Claims

1. A cleaning blade, for use in an image-forming apparatus, formed by molding a resin composition containing a rubber component consisting of a thermosetting elastomer containing acrylonitrile as a constituent monomer thereof and having a bound acrylonitrile amount at 15 to 50%.

2. The cleaning blade according to claim 1, wherein a number-average molecular weight of said thermosetting elastomer is not less than 50,000.

3. The cleaning blade according to claim 1, wherein said thermosetting elastomer composing said rubber component is selected from among acrylonitrile-butadiene rubber (NBR), a mixture of said NBR and other elastomer, and hydrogenated acrylonitrile-butadiene rubber (HNBR) having residual double bond at not more than 10%.

4. The cleaning blade according to claim 2, wherein said thermosetting elastomer composing said rubber component is selected from among acrylonitrile-butadiene rubber (NBR), a mixture of said NBR and other elastomer, and hydrogenated acrylonitrile-butadiene rubber (HNBR) having residual double bond at not more than 10%.

5. The cleaning blade according to claim 1, wherein said resin composition contains said rubber component;

0.1 to 80 parts by mass of a filler for 100 parts by mass of said rubber component; and

0.1 to 30 parts by mass of a crosslinking agent for 100 parts by mass of said rubber component.

6. The cleaning blade according to claim 2, wherein said resin composition contains said rubber component;

0.1 to 80 parts by mass of a filler for 100 parts by mass of said rubber component; and

0.1 to 30 parts by mass of a crosslinking agent for 100 parts by mass of said rubber component.

7. The cleaning blade according to claim 3, wherein said resin composition contains said rubber component;

0.1 to 80 parts by mass of a filler for 100 parts by mass of said rubber component; and

0.1 to 30 parts by mass of a crosslinking agent for 100 parts by mass of said rubber component.

8. The cleaning blade according to claim 1, having a JIS-A hardness at 60 to 90, a tensile strength at not less than 6.0 MPa, and a modulus of repulsion elasticity at 15 to 70%.

9. The cleaning blade according to claim 2, having a JIS-A hardness at 60 to 90, a tensile strength at not less than 6.0 MPa, and a modulus of repulsion elasticity at 15 to 70%.

10. The cleaning blade according to claim 3, having a JIS-A hardness at 60 to 90, a tensile strength at not less than 6.0 MPa, and a modulus of repulsion elasticity at 15 to 70%.