Toner
US-9599919-B2 · Mar 21, 2017 · US
Toner
US9835964B2 · US · B2
| Field | Value |
|---|---|
| Publication number | US-9835964-B2 |
| Application number | US-201414555530-A |
| Country | US |
| Kind code | B2 |
| Filing date | Nov 26, 2014 |
| Priority date | Nov 29, 2013 |
| Publication date | Dec 5, 2017 |
| Grant date | Dec 5, 2017 |
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- Title
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Abstract
Official abstract text for this publication.
The present invention provides a toner that exhibits an excellent colorant dispersibility and hence maintains the formation of a high-quality image, that is capable of low-temperature fixing, and that has a satisfactory heat-resistant storability and a satisfactory durability, in which the toner comprising a toner particle that contains a colorant and a binder resin containing a styrene-acrylic resin and a crystalline resin, wherein a compatibility parameter (V) between the styrene-acrylic resin and the crystalline resin satisfies 0.40≦V≦1.10.
First claim
Opening claim text (preview).
What is claimed is: 1. A toner comprising: a toner particle that contains a colorant, and a binder resin containing a styrene-acrylic resin and a crystalline resin, wherein a compatibility parameter (V) between the styrene-acrylic resin and the crystalline resin satisfies 0.40≦V≦1.10, and a weight-average molecular weight (Mw) of the crystalline resin is 15,000 to 45,000. 2. The toner according to claim 1 , wherein the crystalline resin is a block polymer having a polyester segment and a vinyl polymer segment, and the polyester segment has a structure represented by formula (1) and a structure represented by formula (2): where m represents an integer from 6 to 14) where n represents an integer from 6 to 16). 3. The toner according to claim 2 , wherein a mass ratio between the polyester segment and the vinyl polymer segment is from 40:60 to 80:20. 4. The toner according to claim 3 , wherein the mass ratio between the polyester segment and the vinyl polymer segment is from 40:60 to 70:30. 5. The toner according to claim 2 , wherein a ratio (Mw/Mn) of a weight-average molecular weight (Mw) of the vinyl polymer segment to a number-average molecular weight (Mn) of the vinyl polymer segment is from 1.5 to 3.5. 6. The toner according to claim 2 , wherein a weight-average molecular weight (Mw) of the vinyl polymer segment is from 4,000 to 15,000. 7. The toner according to claim 1 , wherein a melting point of the crystalline resin is from 55 to 90° C. 8. The toner according to claim 1 , wherein a content of the crystalline resin in the binder resin is from 2.0 to 50.0 mass %. 9. The toner according to claim 8 , wherein the content of the crystalline resin in the binder resin is from 6.0 to 50.0 mass %. 10. The toner according to claim 1 , wherein the weight-average molecular weight (Mw) of the crystalline resin is from 20,000 to 45,000. 11. The toner according to claim 1 , wherein a ratio (Mw/Mn) of a weight-average molecular weight (Mw) of the crystalline resin to a number-average molecular weight (Mn) of the crystalline resin is from 1.5 to 3.5. 12. The toner according to claim 1 , wherein the toner particle is a toner particle that is produced by a suspension polymerization method.
Assignees
Inventors
Classifications
- G03G9/08711Primary
with esters of acrylic or methacrylic acid · CPC title
characterised by their chemical properties, e.g. acidity, molecular weight, sensitivity to reactants · CPC title
Polyesters · CPC title
characterised by their physical properties, e.g. viscosity, solubility, melting temperature, softening temperature, glass transition temperature · CPC title
Block polymers · CPC title
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Frequently asked questions
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- What does patent US9835964B2 cover?
- The present invention provides a toner that exhibits an excellent colorant dispersibility and hence maintains the formation of a high-quality image, that is capable of low-temperature fixing, and that has a satisfactory heat-resistant storability and a satisfactory durability, in which the toner comprising a toner particle that contains a colorant and a binder resin containing a styrene-acrylic…
- Who is the assignee on this patent?
- Canon Kk
- What technology area does this patent fall under?
- Primary CPC classification G03G9/08711. Mapped technology areas include Physics.
- When was this patent published?
- Publication date Tue Dec 05 2017 00:00:00 GMT+0000 (Coordinated Universal Time) (B2). Legal status and post-grant events are not shown on this page.
- What related patents are in patentsdb?
- We list 3 related publications on this page (citations in our corpus or others sharing the same primary CPC).