Supercharge Your Innovation With Domain-Expert AI Agents!

Electronic photographic toner and imaging method

一种电子照相、调色剂的技术，应用在电子照相调色剂和成像领域，能够解决难以获得耐热性(耐升华性和耐光性等问题

Inactive Publication Date: 2006-04-12
KONICA MINOLTA INC
View PDF8 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0013] But even when a toner image is formed using an electrophotographic toner as proposed above, it is difficult to obtain sufficient heat resistance (resistance to sublimation) and light resistance

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Electronic photographic toner and imaging method
  • Electronic photographic toner and imaging method
  • Electronic photographic toner and imaging method

Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] The preparation of the colored microparticles relating to the present invention will now be described.

[0026] Colored fine particles can be obtained by dissolving (or dispersing) a resin and a dye in an organic solvent and emulsifying them in water, followed by removing the organic solvent. When covered with a shell resin (shell), a polymerizable monomer containing an unsaturated double bond is added thereto and emulsion polymerization is performed in the presence of a surfactant. Therefore, simultaneously with the polymerization reaction, deposition on the surface of the core is performed to obtain colored fine particles having a core / shell structure. Colored fine particles can be obtained by various methods. For example, an aqueous dispersion of resin particles is previously formed by emulsion polymerization, and then, an organic solvent solution containing a dye is added to the aqueous dispersion of resin particles to impregnate the dye into the resin particles to...

Embodiment

[0120] The invention is further described on the basis of examples, but by no means limited thereto.

[0121] colored particles

[0122] Preparation of Dispersion of Colored Microparticles 1

[0123]Into the separable flask were charged 13.5 g of resin (P-1), 16.3 g of dye (A-1) and 123.5 g of acetic acid, and after replacing the inner atmosphere with nitrogen, the dye was completely dissolved under stirring. Further, 238 g of an aqueous solution of 8.0 g of AQUALON KH-50 (manufactured by DAIICHI SEIYAKU CO., LTD.) was added dropwise thereto with stirring and then emulsified using CLEAR-MIX W-MOTION CLM-0.8W (manufactured by M-TECHNIQUE Co.) 300 seconds. Then, acetic acid was removed under reduced pressure to obtain a dispersion of colored fine particles 1 containing the dye. In the dispersion thus obtained, the volume average particle diameter of the colored particles was 30 nm. Hereinafter, the volume average particle diameter is measured using ZETASIZER (Marbahn Co.). ...

example 1 and 2

[0191] To each of the toner particles 1 to 11, 1% by weight and 1.2% by weight of hydrophobic silica (having a number-average particle diameter of 12 nm and a degree of hydrophobicity of 68) and hydrophobic titanium (having a number-average particle diameter of 20 nm and degree of hydrophobicity 63), and mixed for 15 minutes using a Henschel mixer manufactured by Mitsui Miike Kako-sha. Then, coarse particles were removed using a sieve having an opening of 45 μm to obtain Toners 1 to 11 . These are also referred to as "Inventions 1 to 9" and "Comparative Examples 1 and 2".

[0192] Preparation of developer

[0193] A silicone resin-covered ferrite carrier having a volume average particle diameter of 60 μm was mixed with each of the foregoing toners 1 to 11 at a toner content of 6% by weight to obtain “Developers 1” to “ Developer 11".

[0194] Evaluate

[0195] A digital copier Konica 7075 (manufactured by Konica Minolta Business Technology, Inc.) was used as an evaluation ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

An electrophotographic toner exhibiting superior color reproducibility and transparency and improved characteristics is disclosed, comprising a thermoplastic resin and colored microparticles dispersed in the thermoplastic resin and containing a dye and a resin differing in composition from the thermoplastic resin. An image forming method by use of the toner is also disclosed.

Description

[0001] This application claims priority from Japanese Patent Application No. JP2004-296024 filed on October 8, 2004, which is incorporated herein by reference. technical field [0002] The present invention relates to a toner for electrophotography and an image forming method by using the same. Background technique [0003] Recently, a color copying method has come into practical use, in which a latent electrostatic image carrier is exposed to spectrally separated light to form a prototype electrostatic latent image and the latent image is further developed with a color toner to obtain a color copy image or a corresponding color The copied images are overlaid to obtain a full-color copied image. As toners used in the foregoing, colored toners having yellow, magenta, cyan, etc., which are formed by dispersing dyes and / or pigments of corresponding colors in a binder resin, are produced. [0004] Generally, the aforementioned electrophotographic method forms an image in the fo...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): G03G9/08G03G9/09G03G15/00
CPCG03G9/08728G03G9/0825G03G9/09
Inventor 大野香织池洲悟大福幸司
Owner KONICA MINOLTA INC
Features
  • R&D
  • Intellectual Property
  • Life Sciences
  • Materials
  • Tech Scout
Why Patsnap Eureka
  • Unparalleled Data Quality
  • Higher Quality Content
  • 60% Fewer Hallucinations
Social media
Patsnap Eureka Blog
Learn More

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2025 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com