US 2005/0089786 A1Published application

Toner, developer, image forming apparatus and image forming method

AssigneeRicoh Company, Ltd.

InventorsHideki Sugiura, Satoshi Mochizuki, Akihiro Kotsugai, Yasuo Asahina, Osamu Uchinokura, Hisashi Nakajima, Tomoyuki Ichikawa, Shinya Nakayama, Kohichi Sakata, Tomoko Utsumi, Hitoshi Iwatsuki, Yasuaki Iwamoto

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Abstract

A toner including a binder resin; and a colorant, wherein a hexafluoroisopropanol (HFIP)-soluble component satisfies the following relationship: 2,000≦Mn≦7,000 and 1.5≦Mn/Mw≦10 wherein Mn represents a number-average molecular weight and Mw represents a weight-average molecular weight.

Claims14

Dependent claims

A toner comprising:

a binder resin;
and
a colorant,
wherein a hexafluoroisopropanol (HFIP)-soluble component of said toner satisfies the following relationship:
2,000≦Mn≦7,000 and 1.5≦Mn/Mw≦10
wherein Mn represents a number-average molecular weight and Mw represents a weight-average molecular weight.

3 more elements

Dependencies are inferred from the claim text.

Facts

Application: 10/959,663Filed 7 Oct 2004
Priority: JP 2003-36158622 Oct 2003
Published: 28 Apr 2005
Term ends: Not estimatedThe source records don’t support an estimate.

Classification9 codes

G03G 9/08797
Macromolecular material not specially provided for in a single one of groups G03G9/08702 - G03G9/08775: characterised by their physical…
G03G 9/0804
Preparation methods: whereby the components are brought together in a liquid dispersing medium
G03G 9/0806
Whereby the components are brought together in a liquid dispersing medium: whereby chemical synthesis of at least one of the toner components…
G03G 9/0819
With toner particles: characterised by the dimensions of the particles

Family

US 7,642,032 B2Related patent
US 2005/0089786 A1This patent

From the US filing history. Foreign family members aren’t listed.

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