发明名称 |
ELECTROSTATIC IMAGE DEVELOPING TONER |
摘要 |
Provided is an electrostatic image developing toner comprising a toner base particle containing a binder resin and a releasing agent, wherein the binder resin comprises an amorphous vinyl resin and a crystalline polyester resin; a weight-average molecular weight of the electrostatic image developing toner is in the range of 50000 to 90000, when calculated from a chromatogram which represents a molecular weight distribution and is measured by gel permeation chromatography; a ratio of content of a resin component having a molecular weight of 100000 or more is in the range of 10 to 20% by area, in the chromatogram which represents the molecular weight distribution; the crystalline polyester resin has a melting point in the range of 65 to 85° C.; and, a ratio of content of the crystalline polyester resin in the binder resin is in the range of 5 to 20% by mass. |
申请公布号 |
US2016370721(A1) |
申请公布日期 |
2016.12.22 |
申请号 |
US201615170441 |
申请日期 |
2016.06.01 |
申请人 |
Konica Minolta, Inc. |
发明人 |
SUGAMA KOUJI;NAGASAWA Hiroshi;HORI Anju;UEDA Noboru |
分类号 |
G03G9/087;G03G15/08 |
主分类号 |
G03G9/087 |
代理机构 |
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代理人 |
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主权项 |
1. An electrostatic image developing toner comprising a toner base particle containing a binder resin and a releasing agent, wherein
the binder resin comprises an amorphous vinyl resin and a crystalline polyester resin; a weight-average molecular weight of the electrostatic image developing toner is in the range of 50000 to 90000, when calculated from a chromatogram which represents a molecular weight distribution and is measured by gel permeation chromatography; a ratio of content of a resin component having a molecular weight of 100000 or more is in the range of 10 to 20% by area, in the chromatogram which represents the molecular weight distribution; the crystalline polyester resin has a melting point in the range of 65 to 85° C.; and, a ratio of content of the crystalline polyester resin in the binder resin is in the range of 5 to 20% by mass. |
地址 |
Tokyo JP |