公开(公告)号：US20250036037A1

公开(公告)日：2025-01-30

申请号：US18776488

申请日：2024-07-18

Applicant: Konica Minolta, Inc.

Inventor： Shiori TSUDA ,  Atsushi IIOKA ,  Kazuya ISOBE ,  Yukiko NAKAI ,  Genki WATANABE

IPC: G03G9/087 ,  G03G9/08 ,  G03G15/20

Abstract: A toner for developing an electrostatic charge image, the toner including a binder resin in a toner base particle, in which the binder resin includes a polymer having a constituent unit represented by the following general formula (1) and a constituent unit represented by the following general formula (2): where, R1 represents a hydrogen atom or a methyl group, and R2 represents a hydrocarbon group having 6 or more and 12 or less carbon atoms and having an alicyclic structure, and where, R3 represents a hydrogen atom or a methyl group, and R4 represents a linear or branched hydrocarbon group having 8 or more and 18 or less carbon atoms.

公开(公告)号：US20250130514A1

公开(公告)日：2025-04-24

申请号：US18919597

申请日：2024-10-18

Applicant: KONICA MINOLTA, INC.

Inventor： Atsushi IIOKA ,  Kazuya ISOBE ,  Yukiko NAKAI ,  Shiori TSUDA ,  Genki WATANABE

IPC: G03G9/087

Abstract: Disclosed is an electrostatic charge image developing toner including a toner base particle containing a binder resin and a colorant. The electrostatic charge image developing toner contains, as the binder resin, a polymer having at least a structural unit represented by a general formula (1), and a concentration of radiocarbon isotope 14C is 21.5 pMC or more, and in the general formula (1), R1 represents a hydrogen atom or a methyl group, and R2 represents an alicyclic hydrocarbon group having 6 to 12 carbon atoms.