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US 2006/0051692 A1Published application
Full color toner, and its use in electrophotography methods and apparatus
AssigneeRicoh Company, Ltd.
InventorsKumi Hasegawa, Mitsuo Aoki, Minoru Masuda, Hyo Shu
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Abstract
A full color toner containing a binder resin, a release agent and a colorant is provided, wherein the binder resin contains a polyester resin containing a hybrid resin containing one or more vinyl group polymer units and one or more polyester units, and wherein the content A of the hybrid resin and the content B of the release agent satisfy the following relationship: B/2≦A≦3B.
Claims16
A full color toner, comprising:
- a binder resin, comprising:
- a polyester resin;
- a hybrid resin, comprising:
- one or more vinyl group polymer units;
- and
- one or more polyester units;
- a release agent;
- and
- a colorant;
- wherein a content A of the hybrid resin and a content B of the release agent satisfy the following relationship 1:
- B/2≦A≦3B (relationship 1).
8 more elements
A fixing method, comprising:
- fixing a full color toner image on a recording material upon application of heat and pressure by a fixed heater, a heating material having one of an endless belt form and a belt form having an end which is located opposing the fixed heater and heated thereby, and a pressing member configured to press the recording material against the heating material,
- wherein the full color toner comprises a binder resin comprising a polyester resin, a hybrid resin comprising one or more vinyl group polymer units and one or more polyester units, a release agent, and a colorant, wherein a content A of the hybrid resin and a content B of the release agent satisfy the following relationship 1:
- B/2≦A≦3B (relationship 1).
A fixing device, comprising:
- a fixed heater;
- a heating material having one of an endless belt form and a belt form having an end which is located opposing the fixed heater and heated thereby;
- and
- a pressing member configured to press a recording material against the heating material to fix a full color toner image on the recording material together with the heating material,
- wherein the full color toner comprises a binder resin comprising a polyester resin, a hybrid resin comprising one or more vinyl group polymer units and one or more polyester units, a release agent, and a colorant, wherein a content A of the hybrid resin and a content B of the release agent satisfy the following relationship 1:
- B/2≦A≦3B (relationship 1).
3 more elements
A two-component developer, comprising:
- a carrier;
- and
- a full color toner, comprising:
- a binder resin, comprising:
- a polyester resin;
- a hybrid resin, comprising:
- one or more vinyl group polymer units;
- and
- one or more polyester units;
- a release agent;
- a colorant;
- wherein a content A of the hybrid resin and a content B of the release agent satisfy the following relationship 1:
- B/2≦A≦3B (relationship 1).
10 more elements
A process cartridge, comprising:
- an image bearing member;
- a developing device holding one of a full color toner and a developer comprising the full color toner and a carrier, the full color toner comprising:
- a binder resin comprising a polyester resin;
- a hybrid resin, comprising:
- one or more vinyl group polymer units;
- and
- one or more polyester units;
- a release agent;
- a colorant;
- wherein a content A of the hybrid resin and a content B of the release agent satisfy the following relationship 1:
- B/2≦A≦3B (relationship 1);
- and
- optionally at least one of a charging device and a cleaning device.
10 more elements
An image forming apparatus, comprising:
- an image bearing member;
- a charging device, comprising:
- a charging member configured to contact-charge the image bearing member while a voltage is applied to the charging member;
- an irradiator configured to irradiate the image bearing member to form a latent image thereon;
- a developing device configured to develop the latent image on the image bearing member with one of a full color toner and a developer comprising the full color toner and a carrier;
- a cleaning member configured to clean the image bearing member;
- and
- a transfer device configured to transfer the developed image on a recording material,
- wherein the full color toner comprises a binder resin comprising a polyester resin, a hybrid resin comprising one or more vinyl group polymer units and one or more polyester units, a release agent, a colorant, wherein a content A of the hybrid resin and a content B of the release agent satisfy the following relationship 1:
- B/2≦A≦3B (relationship 1).
7 more elements
Dependencies are inferred from the claim text.