Back to results
US 2004/0175640 A1Published application
Electrostatic charge image developing toner, and developer, image forming apparatus and image forming method using the same toner
AssigneeHitachi Printing Solutions, Ltd.
InventorsTsuneaki Kawanishi, Junji Kobayashi, Ryuuichi Shimizu, Shigenori Yaguchi, Hirobumi Ouchi
Life of this patent
Estimating the term…
Abstract
The invention provides an electrostatic charge image developing toner containing a fixing resin and a wax, characterized in that in a DSC curve measured by a differential scanning calorimeter for the wax, a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C.
Claims18
An electrostatic charge image developing toner comprising:
- a fixing resin;
- and
- a wax mixed with the fixed resin, wherein the wax has a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C., in a DSC curve measured by a differential scanning calorimeter for the wax.
A developer comprising:
- an electrostatic charge image developing toner;
- and
- a magnet carrier mixed with the electrostatic charge image developing toner,
- wherein the electrostatic charge image developing toner containing:
- a fixing resin;
- and
- a wax mixed with the fixing resin, and
- wherein a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C., in a DSC curve measured by a differential scanning calorimeter for the wax.
5 more elements
An image forming apparatus comprising:
- a photoconductor;
- a charger for uniformly charging a surface of the photoconductor;
- an optical system for forming an electrostatic latent image by exposing the charged surface of the photoconductor;
- a developing unit for developing the electrostatic latent image with a toner;
- a transfer unit for transferring a toner image onto a recording medium;
- and
- a fixing unit for fixing the toner image on a recording medium, wherein
- the toner comprising:
- a fixing resin;
- and
- a wax mixed with the fixing resin, and
- wherein a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C., in a DSC curve measured by a differential scanning calorimeter for the wax.
9 more elements
An image forming apparatus comprising:
- a photoconductor;
- a charger for uniformly charging a surface of the photoconductor;
- an optical system for forming an electrostatic latent image by exposing the charged surface of the photoconductor;
- a developing unit for developing the electrostatic latent image with a developer;
- a transfer unit for transferring a toner image onto a recording medium;
- and
- a fixing unit for fixing the toner image on the recording medium;
- wherein the developer comprising:
- an electrostatic charge image developing toner;
- and
- a magnet carrier mixed with the electrostatic charge image developing toner,
- wherein the electrostatic charge image developing toner containing:
- a fixing resin;
- and
- a wax mixed with the fixing resin, and
- wherein a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C., in a DSC curve measured by a differential scanning calorimeter for the wax.
13 more elements
An image forming method comprising:
- uniformly charging a surface of a photoconductor;
- forming an electrostatic latent image by exposing the charged surface of the photoconductor;
- developing the electrostatic latent image with a toner;
- transferring a toner image onto a recording medium;
- and
- fixing the toner image on the recording medium,
- wherein the toner containing:
- a fixing resin;
- and
- a wax mixed with the fixing resin, and
- wherein a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C., in a DSC curve measured by a differential scanning calorimeter for the wax.
8 more elements
An image forming method comprising:
- uniformly charging a surface of a photoconductor;
- forming an electrostatic latent image by exposing the charged surface of the photoconductor;
- developing the electrostatic latent image with a developer;
- transferring a toner image onto a recording medium;
- and
- fixing the toner image on the recording medium,
- wherein the developer comprising:
- an electrostatic charge image developing toner;
- and
- a magnet carrier mixed with the electrostatic charge image developing toner, and
- wherein the electrostatic charge image developing toner containing:
- a fixing resin;
- and
- a wax mixed with the fixed resin, and
- wherein a maximum endothermic peak of endothermic peaks at temperature up is less than 70° C., on-set temperature attributable to the maximum endothermic peak is above 50° C., and lowest on-set temperature of on-set temperatures attributable to endothermic peaks except the maximum endothermic peak is in a range of from 30° C. to 40° C., in a DSC curve measured by a differential scanning calorimeter for the wax.
12 more elements
Dependencies are inferred from the claim text.