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US 2003/0207192 A1Published application
Toner and electrographic method
AssigneeMatsushita Electric Industrial Co., Ltd.
InventorsNoriaki Hirota, Yasuhito Yuasa, Hideki Tatematsu, Masahisa Maeda
Life of this patent
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Abstract
Toner of the present invention at least includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency: 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency: 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner.
Claims50
Toner comprising binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner.
Toner comprising binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and a compression ratio C calculated from a static density of the toner and a dynamic density thereof satisfies 5≦C(%)≦40.
Toner comprising binder resin, wax, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), and a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa).
Toner comprising binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner, and a compression ratio C calculated from a static density of the toner and a dynamic density thereof satisfies 5≦C(%)≦40.
Toner comprising binder resin, wax, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner.
Toner comprising binder resin, wax, a colorant, and an external additive, wherein a storage modulus G′r (frequency:
- 10 rad/s) of the binder resin at 190° C. and a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 0.15≦Log10 (G′t/G′r)≦2, a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), and a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa).
1 more element
Toner comprising binder resin, wax, a colorant, and an external additive, wherein a storage modulus G′r (frequency:
- 10 rad/s) of the binder resin at 190° C. and a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfy 0.15≦Log10 (G′t/G′r)≦2, a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and a compression ratio C calculated from a static density of the toner and a dynamic density thereof satisfies 5≦C(%)≦40.
1 more element
An electrophotographic method comprising:
- making visible an electrostatic latent image on a photoreceptor by developing it with toner which includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner;
- transferring the visible toner on the photoreceptor to a transfer sheet;
- cleaning the photoreceptor by removing the toner, which has partially remained on the photoreceptor during the transfer, from the photoreceptor;
- and
- returning waste toner removed by the cleaning and re-cycling it.
4 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image on a photoreceptor by developing it with toner which includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and a compression ratio C calculated from a static density of the toner and a dynamic density thereof satisfies 5≦C(%)≦40;
- transferring the visible toner on the photoreceptor to a transfer sheet;
- cleaning the photoreceptor by removing the toner, which has partially remained on the photoreceptor during the transfer, from the photoreceptor;
- and
- returning waste toner removed by the cleaning and re-cycling it.
4 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image on a photoreceptor by developing it with toner which includes binder resin, wax, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), and a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa);
- transferring the visible toner on the photoreceptor to a transfer sheet;
- cleaning the photoreceptor by removing the toner, which has partially remained on the photoreceptor during the transfer, from the photoreceptor;
- and
- returning waste toner removed by the cleaning and re-cycling it.
4 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image formed on an image holder by developing it with toner which includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner;
- primary-transferring the toner to an endless intermediate transfer body, which is in contact with the image holder;
- forming an overlapped image of the transferred toner by performing the primary-transfer a plurality of times;
- and
- secondary-transferring the overlapped image of the transferred toner, which has been formed on the intermediate transfer body, collectively to an image receiving sheet transported from a sheet supply side.
4 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image formed on an image holder by developing it with toner which includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and a compression ratio C calculated from a static density of the toner and a dynamic density thereof satisfies 5≦C(%)≦40;
- primary-transferring the toner to an endless intermediate transfer body, which is in contact with the image holder;
- forming an overlapped image of the transferred toner by performing the primary-transfer a plurality of times;
- and
- secondary-transferring the overlapped image of the transferred toner, which has been formed on the intermediate transfer body, collectively to an image receiving sheet transported from a sheet supply side.
4 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image formed on an image holder by developing it with toner which includes binder resin, wax, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa);
- primary-transferring the toner to an endless intermediate transfer body, which is in contact with the image holder;
- forming an overlapped image of the transferred toner by performing the primary-transfer a plurality of times;
- and
- secondary-transferring the overlapped image of the transferred toner, which has been formed on the intermediate transfer body, collectively to an image receiving sheet transported from a sheet supply side.
4 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image formed on an image holder by developing it with toner which includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and the toner contains 5 to 50% by number of toner particles with a size of 2×10−6 to 5×10−6 m in size distribution of the toner;
- primary-transferring the toner to an endless intermediate transfer body, which is in contact with the image holder;
- cleaning the photoreceptor by removing the toner, which has partially remained on the photoreceptor during the primary-transfer, from the photoreceptor;
- returning waste toner removed by the cleaning to development and recycling it;
- forming an overlapped image of the transferred toner by performing the primary-transfer a plurality of times;
- and
- secondary-transferring the overlapped image of the transferred toner, which has been formed on the intermediate transfer body, collectively to an image receiving sheet transported from a sheet supply side.
6 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image formed on an image holder by developing it with toner which includes binder resin, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa), and a compression ratio C calculated from a static density of the toner and a dynamic density thereof satisfies 5≦C(%)≦40;
- primary-transferring the toner to an endless intermediate transfer body, which is in contact with the image holder;
- cleaning the photoreceptor by removing the toner, which has partially remained on the photoreceptor during the primary-transfer, from the photoreceptor;
- returning waste toner removed by the cleaning to development and recycling it;
- forming an overlapped image of the transferred toner by performing the primary-transfer a plurality of times;
- and
- secondary-transferring the overlapped image of the transferred toner, which has been formed on the intermediate transfer body, collectively to an image receiving sheet transported from a sheet supply side.
6 more elements
An electrophotographic method comprising:
- making visible an electrostatic latent image formed on an image holder by developing it with toner which includes binder resin, wax, a colorant, and an external additive, wherein a loss modulus G″t (frequency:
- 10 rad/s) of the toner at 170° C. satisfies 100≦G″t≦5000 (Pa), a storage modulus G′t (frequency:
- 10 rad/s) of the toner at 190° C. satisfies 10≦G′t≦3000 (Pa);
- primary-transferring the toner to an endless intermediate transfer body, which is in contact with the image holder;
- cleaning the photoreceptor by removing the toner, which has partially remained on the photoreceptor during the primary-transfer, from the photoreceptor;
- returning waste toner removed by the cleaning to development and recycling it;
- forming an overlapped image of the transferred toner by performing the primary-transfer a plurality of times;
- and
- secondary-transferring the overlapped image of the transferred toner, which has been formed on the intermediate transfer body, collectively to an image receiving sheet transported from a sheet supply side.
6 more elements
Dependencies are inferred from the claim text.