公开(公告)号：US20240361710A1

公开(公告)日：2024-10-31

申请号：US18644520

申请日：2024-04-24

Applicant: Konica Minolta, Inc.

Inventor： Yukiko NAKAI ,  Michiaki ISHIKAWA ,  Yusuke TAKIGAURA ,  Junya ONISHI ,  Keiji ARAI

IPC: G03G9/087 ,  G03G9/08 ,  G03G9/097 ,  G03G15/09

CPC classification number: G03G9/08755 ,  G03G9/0819 ,  G03G9/09725 ,  G03G15/0928 ,  G03G2215/0604

Abstract: An image forming system includes, an electrostatic charge image developing toner; and a developing sleeve configured to convey the electrostatic charge image developing toner, wherein a toner particle included in the electrostatic charge image developing toner contains an amorphous polyester, the amorphous polyester is a polycondensate of a polyvalent carboxylic acid and a polyhydric alcohol, a content percentage of a structural unit derived from a bisphenol A derivative in the amorphous polyester is 10 mol % or less with respect to all structural units derived from the polyhydric alcohol, and the developing sleeve includes an aluminum alloy including more than 0.6% by mass of silicon.

公开(公告)号：US20240353777A1

公开(公告)日：2024-10-24

申请号：US18625919

申请日：2024-04-03

Applicant: Konica Minolta, Inc.

Inventor： Michiaki ISHIKAWA ,  Akihiko ITAMI ,  Aya SHIRAI

IPC: G03G15/09 ,  G03G15/08 ,  G03G21/18

CPC classification number: G03G15/0928 ,  G03G15/0808 ,  G03G15/0818 ,  G03G21/1814 ,  G03G2215/0604

Abstract: A developing roller for an electrophotographic image forming apparatus, which conveys a developer, wherein the developing roller includes a developing sleeve and a member that generates a magnetic flux inside the developing sleeve, and the developing sleeve contains an aluminum alloy containing more than 0.6% by mass of silicon.

公开(公告)号：US20240337959A1

公开(公告)日：2024-10-10

申请号：US18622708

申请日：2024-03-29

Applicant: Konica Minolta, Inc.

Inventor： Junya ONISHI ,  Yusuke TAKIGAURA ,  Yukiko NAKAI ,  Michiaki ISHIKAWA ,  Keiji ARAI

IPC: G03G9/08 ,  G03G9/087

CPC classification number: G03G9/0815 ,  G03G9/0823 ,  G03G9/08755

Abstract: Disclosed is a method for producing an electrostatic charge image developing toner, including: drying wet toner base particles to produce the electrostatic charge image developing toner. The toner base particles contain an amorphous polyester that is a polycondensate of a polyvalent carboxylic acid and a polyhydric alcohol. In the amorphous polyester, a content of a structural unit derived from bisphenol A or a bisphenol A derivative is 10 mol % or less with respect to total moles of a structural unit derived from the polyhydric alcohol. The drying comprises drying the wet toner base particles with an airflow in a dryer. A temperature of the airflow is equal to or higher than 60° C. A velocity of the airflow is greater than or equal to 5 m/sec.

公开(公告)号：US20240353785A1

公开(公告)日：2024-10-24

申请号：US18625933

申请日：2024-04-03

Applicant: Konica Minolta, Inc.

Inventor： Koji SHIBATA ,  Michiaki ISHIKAWA

IPC: G03G15/00 ,  G03G9/087 ,  G03G15/09

CPC classification number: G03G15/751 ,  G03G9/08755 ,  G03G15/09 ,  G03G2215/0604

Abstract: An image forming method uses a photoreceptor including at least an aluminum substrate, a toner for developing an electrostatic image including toner particles containing at least a binding resin, and a developer bearing member including a member that generates a magnetic flux inside, wherein the aluminum substrate contains silicon, a silicon content of the aluminum substrate is more than 0.6% by mass, and a glass transition point (Tg) of the toner for developing an electrostatic image is in a range of 0 to 45° C.