公开(公告)号：EP4071555A1

公开(公告)日：2022-10-12

申请号：EP20897330.5

申请日：2020-12-02

申请人： Canon Kabushiki Kaisha

发明人： YAMAMOTO, Arihiro ,  INOUE, Syoji ,  WATANABE, Masahiro ,  UCHIDA, Toshirou ,  IKEDA, Youhei ,  YOKOYAMA, Masanori ,  KATO, Hisao ,  SUDO, Saki ,  KAWAKAMI, Tomoya ,  KIMURA, Masaaki

IPC分类号： G03G21/00 ,  G03G15/00

摘要： The present invention is aimed at providing an electrophotographic cleaning blade that has excellent chipping resistance and can exhibit excellent cleaning performance. This cleaning blade is provided with an elastic member that comprises a polyurethane and a support member that supports the elastic member, and cleans the surface of a member to be cleaned, by bringing a part of the elastic member into contact with the surface of the member to be cleaned that is moving. The average value of the elastic modulus of the elastic member obtained when measured using SPM is at least 15 MPa and not more than 470 MPa, and the coefficient of variation thereof is not more than 6.0%.

公开(公告)号：EP4190834A1

公开(公告)日：2023-06-07

申请号：EP21850856.2

申请日：2021-07-30

申请人： CANON KABUSHIKI KAISHA

发明人： SEGAWA, Shota ,  AOYAMA, Takehiko ,  YOKOYAMA, Masanori ,  MATSUDA, Hidekazu ,  INOUE, Syoji ,  YAMAMOTO, Arihiro ,  IKEDA, Youhei

IPC分类号： C08G18/10 ,  C08G18/32 ,  C08G18/65 ,  C08G18/76 ,  B60S1/38

摘要： Provided is a wiper blade for vehicle is provided capable of exhibiting excellent wipability.
The wiper blade for vehicle brings a part of the lip part into contact with a surface of the to-be-cleaned member, and cleans the surface thereof, the polyurethane of the lip part comprises a reactant of a composition including an isocyanate compound which includes diisocyanate and tri- or higher functional polyfunctional isocyanate, and an alcohol which includes tri- or higher functional polyfunctional alcohol, the diisocyanate has an aromatic ring in a molecule, when M1 represents a detected amount of all ions, M2 represents tri- or higher functional polyfunctional isocyanate, and M3 represents diisocyanate, M2/M1 is 0.001 to 0.028, M3/M1 is 0.020 to 0.110, and M2/M3 is 0.013 to 0.300, and a concentration of the tri or higher functional polyfunctional alcohol in the polyurethane is 0.12 mmol/g to 0.65 mmol/g.