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US 2003/0152857 A1Published application
Toner, developer, image-forming method and image-forming device
OwnerHideki Sugiura, Satoshi Mochizuki +6inventors
InventorsHideki Sugiura, Satoshi Mochizuki, Kazuhiko Umemura, Yasuo Asahina, Minoru Masuda, Kohsuke Suzuki, Tomomi Tamura, Yasuaki Iwamoto
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Abstract
A toner for electrophotography contains a binder resin and a colorant, the toner for electrophotography has a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and a loose apparent density of 0.10-0.50 (g/cm3).
Claims30
A toner for electrophotography, comprising:
- a binder resin;
- and
- a colorant,
- the toner has a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and a loose apparent density of 0.10-0.50 (g/cm3).
1 more element
A developer for electrophotography, comprising:
- a toner for electrophotography;
- and
- a carrier containing magnetic particles,
- wherein the toner for electrophotography comprises:
- a binder resin;
- and
- a colorant,
- wherein the toner for electrophotography has a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and a loose apparent density of 0.10-0.50 (g/cm3).
5 more elements
An image-forming device, comprising:
- a latent electrostatic image bearing member;
- a charger for charging the latent electrostatic image bearing member;
- a light irradiator for irradiating the latent electrostatic image bearing member to a light to form a latent electrostatic image;
- an image developer for developing the latent electrostatic image with a developer for electrophotography to form a visible developed image;
- and
- a transfer for transferring the visible developed image to a transfer medium,
- wherein the developer for electrophotography comprises a toner for electrophotography which comprises:
- a binder resin;
- and
- a colorant,
- wherein the toner for electrophotography has a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and a loose apparent density of 0.10-0.50 (g/cm3).
8 more elements
An image-forming device, comprising:
- a latent electrostatic image bearing member;
- a charger for charging the latent electrostatic image bearing member;
- a light irradiator for irradiating the latent electrostatic image bearing member to a light to form a latent electrostatic image;
- an image developer for developing the latent electrostatic image with a developer to form a visible developed image;
- and
- a transfer for transferring the visible developed image to an intermediate transfer body, and then to a transfer medium,
- wherein the developer is a one-component developer comprising a toner for electrophotography having a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and an ionization potential (IP) difference between the toner for electrophotography and the latent electrostatic image bearing member is 0-1.0 eV, and an IP difference between the toner for electrophotography and the intermediate transfer body is 0-1.0 eV or less.
4 more elements
An image-forming method, comprising:
- a step for charging a latent electrostatic image bearing member,
- a step for irradiating the latent electrostatic image bearing member to a light to form a latent electrostatic image;
- a step for developing the latent electrostatic image with a developer for electrophotography to form a visible developed image;
- and
- a step for transferring the visible developed image to a transfer medium,
- wherein the developer for electrophotography comprises a toner for electrophotography which comprises:
- a binder resin;
- and
- a colorant,
- wherein the toner for electrophotography has a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and a loose apparent density of 0.10-0.50 (g/cm3).
7 more elements
An image-forming method, comprising:
- a step for charging a latent electrostatic image bearing member,
- a step for irradiating the latent electrostatic image bearing member to a light to form a latent electrostatic image;
- a step for developing the latent electrostatic image with a developer for electrophotography to form a visible developed image;
- and
- a step for transferring the visible developed image to an intermediate transfer body, and then to a transfer medium,
- wherein the developer for electrophotography is a one-component developer comprising a toner for electrophotography having a tensile fracture strength of 10-1400 (N/m2) under 10 kg/cm2 compression, and an ionization potential (IP) difference between the toner for electrophotography and the latent electrostatic image bearing member is 04-1.0 eV, and an IP difference between the toner for electrophotography and the intermediate transfer body is 0.1.0 eV or less.
3 more elements
Dependencies are inferred from the claim text.