Method and apparatus for making a blade for electrophotographic devices

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 5776395
SERIAL NO

08754774

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ATTORNEY / AGENT: (SPONSORED)

Importance

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Abstract

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This details a production method for a blade for electrophotographic devices, made of thermosetting type polyurethane, including the steps of mixing and stirring the liquid polyurethane prepolymer which is a raw material component for a thermosetting type polyurethane polymer and the liquid crosslinking agent, discharging the mixture thereof into a die having a concave cross section in a molding drum, heating it via an endless belt which is in contact with the outer peripheral face of the molding drum and runs with the rotation of the drum 20 to continuously mold a banded blade molding S having a prescribed width, and cutting the blade molding to a prescribed length after cooling it down.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
Bando Kagaku Kabushiki KaishaKOBE7

International Classification(s)

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Fujiwara, Yoshinori Kobe, JP 28 132
Noda, Takeshi Kakogawa, JP 78 6427
Shigechika, Yuichi Kobe, JP 1 4
Tani, Arata Akashi, JP 2 23
Taniguchi, Toshiharu Akashi, JP 5 14

Cited Art Landscape

Patent Info (Count) # Cites Year
 
MONSANTO COMPANY (1)
* 4323533 Rotary forming of articles 30 1980
 
CANON KABUSHIKI KAISHA (1)
* 5204034 Method of producing a cleaning blade with a lubricant surface 16 1991
* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
SUMITOMO RUBBER INDUSTRIES, LTD. (1)
* 2007/0212,137 Cleaning blade for use in image-forming apparatus 2 2007
 
CANON KASEI KABUSHIKI KAISHA (3)
* 2003/0194,250 Developing assembly, developer quantity control blade and process for manufacturing developer quantity control blade 8 2003
* 2006/0202,376 Processes for manufacturing blade member of developer quantity control blade and manufacturing the blade 1 2006
* 2008/0213,421 Centrifugal casting die, method for manufacturing thereof as well as casting material, blade obtained therefrom and method for manufacturing thereof 1 2008
 
CANON KABUSHIKI KAISHA (6)
* 7074292 Processes for manufacturing blade member of developer quantity control blade 3 2002
* 7662329 Centrifugal casting die, method for manufacturing thereof as well as casting material, blade obtained therefrom and method for manufacturing thereof 3 2003
* 2003/0231,908 Centrifugal casting die, method for manufacturing thereof as well as casting material, blade obtained therefrom and method for manufacturing thereof 1 2003
7016633 Developing assembly featuring a developer-carrying member having specified ranges of deformation and hardness and a developer quality control blade having a rough contact surface 3 2005
* 9017588 Method and apparatus for producing an electrophotographic blade member 0 2011
* 2011/0233,813 METHOD AND APPARATUS FOR PRODUCING AN ELECTROPHOTOGRAPHIC BLADE MEMBER 2 2011
* Cited By Examiner