Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Developer and test method thereof

A technology of developer and color developer, applied in the direction of developer, copying/marking method, investigation stage/state change, etc., can solve problems such as time-consuming

Inactive Publication Date: 2014-03-26
TOSHIBA TEC KK
View PDF6 Cites 2 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, as described above, it takes too much time to decolorize an image, so it has been desired to decolorize in a short time.

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
  • Developer and test method thereof
  • Developer and test method thereof
  • Developer and test method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0055] The binder resin microparticle dispersion, the colorant microcapsule dispersion, and the mold release agent microparticle dispersion were prepared so that the colorant concentration became 15%, the release agent concentration became 10%, and the binder resin concentration became 75%. Ammonium sulfate was used as a coagulant to produce 8 μm aggregated particles, which were melted by heating to 60° C., and then cooled to obtain a colored particle dispersion. The obtained colored particle dispersion was separated from solid to liquid by a filter press, and the colored particles were washed with pure water and vacuum-dried. As additives, 2 parts by weight of hydrophobic silica and 0.5 parts by weight of titanium oxide were attached to On the surface of the toner particles, a colored toner of 8 μm was obtained.

[0056] The obtained toner was mixed with a ferrite carrier covered with silicone resin, and image output was performed on an MFP (e-studio4520c) manufactured by Toshi...

Embodiment 2

[0063] A colored toner of 8 μm was obtained in the same manner as in Example 1 except that the colorant microcapsule dispersion was changed to a colorant dispersion.

[0064] The obtained toner was stored in a freezer at -30° C. for one week to obtain a colored toner.

[0065] The obtained toner was mixed with a ferrite carrier covered with silicone resin, and image output was performed on an MFP (e-studio4520c) manufactured by Toshiba Tec. The temperature of the fixing device was set to 80° C., the paper feed speed was adjusted to 30 mm / sec, and a color developed image with an image density of 0.4 was obtained.

[0066] In the DSC measurement of the obtained toner, as in Example 1, in the first heating, endothermic peaks were observed at around 65°C, 80°C, and 100°C, and in the second heating, at 60°C A baseline shift due to the glass transition of the binder resin was observed nearby, an endothermic peak was observed around 80°C, and the endothermic peak around 100°C disapp...

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

PropertyMeasurementUnit
Volume average particle sizeaaaaaaaaaa
Login to View More

Abstract

The invention provides a color-fadable developer capable of rapidly fading the colors of an image and the test method thereof. The color-fadable developer contains a binder resin, a color generation compound and a color developing agent. When the developer is heated from a low temperature to a high temperature at a prescribed temperature rising speed, differential scanning calorimetry is detected. The operation is repeated twice. A first differential scanning calorimetry curve based on a measurement by differential scanning calorimetry during the first heating has an endothermic peak that is missing from a second differential scanning calorimetry curve based on a measurement differential scanning calorimetry during the second heating, and has a different peak than the endothermic peak caused by a glass transition point of a binder resin.

Description

technical field [0001] Embodiments of the present invention relate to a developer and an inspection method thereof. Background technique [0002] From the viewpoint of environmental protection or economic efficiency by reducing the usage of recording media such as paper, a method of reusing the recording media such as paper by erasing the color of a toner image formed on recording media such as paper is very effective. [0003] The erasable toner is known to contain, for example, a color-forming compound and a color developer, and to be erasable by heating. In this technology, a color-forming compound and a color developer are melt-kneaded together with a binder resin by a kneading and pulverizing method, and then incorporated into the toner. This toner can decolorize the printed portion by heating the printed paper at 100° C. to 200° C. for about 1 to 3 hours, and the decolorized paper can be reused. Such an erasable toner is an excellent technology that can contribute t...

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
IPC IPC(8): G03G9/087
CPCB41M7/0009G01N25/04B41M5/305G01N25/00G03G9/0924G03G9/0926G03G9/0928
Inventor 原誉史生田真大伊藤刚司宇土基成武田和久青木孝安
Owner TOSHIBA TEC KK
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com