Toner for electrostatic image development, toner cartridge, process cartridge and image forming apparatus
US-RE45970-E · Apr 12, 2016 · US
Method for producing toner for developing electrostatic charge image, and toner for developing electrostatic charge image
US2022308482A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2022308482-A1 |
| Application number | US-202117465970-A |
| Country | US |
| Kind code | A1 |
| Filing date | Sep 3, 2021 |
| Priority date | Mar 23, 2021 |
| Publication date | Sep 29, 2022 |
| Grant date | — |
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- Title
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Abstract
Official abstract text for this publication.
A method for producing a toner for developing an electrostatic charge image includes: aggregating at least resin particles contained in a dispersion by using an aluminum aggregating agent to form aggregated particles; heating and fusing the aggregated particles to form fused particles; cooling a dispersion containing the fused particles to obtain a toner particle dispersion; and adjusting a pH of the toner particle dispersion to 8 or more and 11 or less.
First claim
Opening claim text (preview).
What is claimed is: 1 . A method for producing a toner for developing an electrostatic charge image, comprising: aggregating at least resin particles contained in a dispersion by using an aluminum aggregating agent to form aggregated particles; heating and fusing the aggregated particles to form fused particles; cooling a dispersion containing the fused particles to obtain a toner particle dispersion; and adjusting a pH of the toner particle dispersion to 8 or more and 11 or less. 2 . The method for producing a toner for developing an electrostatic charge image according to claim 1 , wherein, in the cooling, the dispersion containing the fused particles is cooled to a temperature of 40° C. or lower. 3 . The method for producing a toner for developing an electrostatic charge image according to claim 1 , wherein the adjusting of the pH is performed within 60 minutes after the cooling. 4 . The method for producing a toner for developing an electrostatic charge image according to claim 2 , wherein the adjusting of the pH is performed within 60 minutes after the cooling. 5 . The method for producing a toner for developing an electrostatic charge image according to claim 3 , wherein the adjusting of the pH is performed within 30 minutes after the cooling. 6 . The method for producing a toner for developing an electrostatic charge image according to claim 4 , wherein the adjusting of the pH is performed within 30 minutes after the cooling. 7 . The method for producing a toner for developing an electrostatic charge image according to claim 1 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 8.5 or more and 11.0 or less. 8 . The method for producing a toner for developing an electrostatic charge image according to claim 2 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 8.5 or more and 11.0 or less. 9 . The method for producing a toner for developing an electrostatic charge image according to claim 3 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 8.5 or more and 11.0 or less. 10 . The method for producing a toner for developing an electrostatic charge image according to claim 4 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 8.5 or more and 11.0 or less. 11 . The method for producing a toner for developing an electrostatic charge image according to claim 5 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 8.5 or more and 11.0 or less. 12 . The method for producing a toner for developing an electrostatic charge image according to claim 6 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 8.5 or more and 11.0 or less. 13 . The method for producing a toner for developing an electrostatic charge image according to claim 7 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 9.0 or more and 10.0 or less. 14 . The method for producing a toner for developing an electrostatic charge image according to claim 8 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 9.0 or more and 10.0 or less. 15 . The method for producing a toner for developing an electrostatic charge image according to claim 9 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 9.0 or more and 10.0 or less. 16 . The method for producing a toner for developing an electrostatic charge image according to claim 10 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 9.0 or more and 10.0 or less. 17 . The method for producing a toner for developing an electrostatic charge image according to claim 11 , wherein, in the adjusting of the pH, the pH of the toner particle dispersion is adjusted to 9.0 or more and 10.0 or less. 18 . The method for producing a toner for developing an electrostatic charge image according to claim 1 , wherein, in the aggregating, at least the resin particles and releasing agent particles are aggregated. 19 . The method for producing a toner for developing an electrostatic charge image according to claim 1 , wherein, in the adjusting of the pH, the pH is adjusted by using an alkali metal hydroxide. 20 . A toner for developing an electrostatic charge image, the toner being obtained by the method for producing a toner for developing an electrostatic charge image according to claim 1 .
Assignees
Inventors
Classifications
Preparation thereof · CPC title
- G03G9/0804Primary
whereby the components are brought together in a liquid dispersing medium · CPC title
- G03G9/0815Primary
Post-treatment · CPC title
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Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2022308482A1 cover?
- A method for producing a toner for developing an electrostatic charge image includes: aggregating at least resin particles contained in a dispersion by using an aluminum aggregating agent to form aggregated particles; heating and fusing the aggregated particles to form fused particles; cooling a dispersion containing the fused particles to obtain a toner particle dispersion; and adjusting a pH …
- Who is the assignee on this patent?
- Fujifilm Business Innovation Corp
- What technology area does this patent fall under?
- Primary CPC classification G03G9/0804. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Thu Sep 29 2022 00:00:00 GMT+0000 (Coordinated Universal Time) (A1). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 1 related publication on this page (citations in our corpus or others sharing the same primary CPC).