Patents by Inventor Ryuichi MINBE

Ryuichi MINBE has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Image forming apparatus with transfer nip adjustment function
    Patent number: 8548345
    Abstract: A secondary transfer facing roller includes a roller part that has a through-hole penetrating in a rotary shaft line direction at a rotation center position, and a penetrating shaft member penetrating the through-hole of the roller part and spinning the roller part on a surface of the penetrating shaft member. Eccentric cams are fixed to both end regions that are not located in the roller part, so as to rotate integrally with the penetrating shaft member. A position regulating cam and an abutting roller form a gap between the intermediate transfer belt and the secondary transfer roller immediately before a transfer sheet enters a transfer nip part. While the gap is formed, current flows between the intermediate transfer belt and the secondary transfer roller via the position regulating cam and the abutting roller.
    Type: Grant
    Filed: April 11, 2013
    Date of Patent: October 1, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryuichi Minbe, Katsuya Kawagoe, Kenji Sengoku, Junpei Fujita, Osamu Ichihashi
  • IMAGE FORMING APPARATUS WITH TRANSFER NIP ADJUSTMENT FUNCTION
    Publication number: 20130223901
    Abstract: A secondary transfer facing roller includes a roller part that has a through-hole penetrating in a rotary shaft line direction at a rotation center position, and a penetrating shaft member penetrating the through-hole of the roller part and spinning the roller part on a surface of the penetrating shaft member. Eccentric cams are fixed to both end regions that are not located in the roller part, so as to rotate integrally with the penetrating shaft member. A position regulating cam and an abutting roller form a gap between the intermediate transfer belt and the secondary transfer roller immediately before a transfer sheet enters a transfer nip part. While the gap is formed, current flows between the intermediate transfer belt and the secondary transfer roller via the position regulating cam and the abutting roller.
    Type: Application
    Filed: April 11, 2013
    Publication date: August 29, 2013
    Inventors: Ryuichi MINBE, Katsuya Kawagoe, Kenji Sengoku, Junpei Fujita, Osamu Ichihashi
  • Image forming apparatus with transfer nip adjustment function
    Patent number: 8433221
    Abstract: A secondary transfer facing roller includes a roller part that has a through-hole penetrating in a rotary shaft line direction at a rotation center position, and a penetrating shaft member penetrating the through-hole of the roller part and spinning the roller part on a surface of the penetrating shaft member. Eccentric cams are fixed to both end regions that are not located in the roller part, so as to rotate integrally with the penetrating shaft member. A position regulating cam and an abutting roller form a gap between the intermediate transfer belt and the secondary transfer roller immediately before a transfer sheet enters a transfer nip part. While the gap is formed, current flows between the intermediate transfer belt and the secondary transfer roller via the position regulating cam and the abutting roller.
    Type: Grant
    Filed: December 1, 2009
    Date of Patent: April 30, 2013
    Assignee: Ricoh Company, Ltd.
    Inventors: Ryuichi Minbe, Katsuya Kawagoe, Kenji Sengoku, Junpei Fujita, Osamu Ichihashi
  • IMAGE FORMING APPARATUS WITH TRANSFER NIP ADJUSTMENT FUNCTION
    Publication number: 20100142985
    Abstract: A secondary transfer facing roller includes a roller part that has a through-hole penetrating in a rotary shaft line direction at a rotation center position, and a penetrating shaft member penetrating the through-hole of the roller part and spinning the roller part on a surface of the penetrating shaft member. Eccentric cams are fixed to both end regions that are not located in the roller part, so as to rotate integrally with the penetrating shaft member. A position regulating cam and an abutting roller form a gap between the intermediate transfer belt and the secondary transfer roller immediately before a transfer sheet enters a transfer nip part. While the gap is formed, current flows between the intermediate transfer belt and the secondary transfer roller via the position regulating cam and the abutting roller.
    Type: Application
    Filed: December 1, 2009
    Publication date: June 10, 2010
    Inventors: Ryuichi MINBE, Katsuya Kawagoe, Kenji Sengoku, Junpei Fujita, Osamu Ichihashi