Production process for self-dispersible pigment, self-dispersible pigment, ink, ink cartridge and ink jet recording method
US-2015376416-A1 · Dec 31, 2015 · US
Inkjet ink
US2021355333A1 · US · A1
| Field | Value |
|---|---|
| Publication number | US-2021355333-A1 |
| Application number | US-202117318180-A |
| Country | US |
| Kind code | A1 |
| Filing date | May 12, 2021 |
| Priority date | May 13, 2020 |
| Publication date | Nov 18, 2021 |
| Grant date | — |
How to read this patent
A practical reading order for non-experts. Skip the full description unless you need deep technical detail.
- Title
What the patent document calls the invention.
- Abstract
A short plain-language summary of the technical disclosure.
- Assignees and inventors
Who owns or filed the patent and who is credited as inventor.
- Key dates
Filing, priority, publication, and grant dates set the timeline.
- First independent claim
The legal scope of protection — read this for what is actually claimed.
- CPC / IPC classifications
Technology tags used to group this patent with similar filings.
- Citations and related patents
Prior art links and similar publications in this corpus.
Abstract
Official abstract text for this publication.
An inkjet ink contains at least a first carbon black, a second carbon black, and water. The first carbon black has a DBP oil absorption of less than 130 mL/100 g and a BET specific surface area of less than 300 m2/g. The second carbon black has a DBP oil absorption of at least 130 mL/100 g and a BET specific surface area of at least 300 m2/g.
First claim
Opening claim text (preview).
What is claimed is: 1 . An inkjet ink comprising at least: a first carbon black having a DBP oil absorption of less than 130 mL/100 g and a BET specific surface area of less than 300 m 2 /g; a second carbon black having a DBP oil absorption of at least 130 mL/100 g and a BET specific surface area of at least 300 m 2 /g; and water. 2 . The inkjet ink according to claim 1 , wherein a difference between the DBP oil absorption of the first carbon black and the DBP oil absorption of the second carbon black is at least 20 mL/100 g and no greater than 110 mL/100 g. 3 . The inkjet ink according to claim 1 , wherein a difference between the BET specific surface area of the first carbon black and the BET specific surface area of the second carbon black is at least 50 m 2 /g and no greater than 400 m 2 /g. 4 . The inkjet ink according to claim 1 , which has a shear viscosity of at least 6 mPa·s and no greater than 8 mPa·s at a temperature of 39° C. and a shearing speed of 50 s −1 , and a shear viscosity of at least 4 mPa·s and no greater than 6 mPa·s at a temperature of 39° C. and a shearing speed of 100,000 s −1 . 5 . The inkjet ink according to claim 1 , which has a dynamic surface tension at a surface age of 10 milliseconds of at least 39.0 mN/m and no greater than 43.0 mN/m as measured by a maximum bubble pressure method, and a dynamic surface tension at a surface age of 50 milliseconds of at least 36.0 mN/m and no greater than 41.0 mN/m as measured by the maximum bubble pressure method. 6 . The inkjet ink according to claim 1 , which has a dynamic surface tension at a surface age of 50 milliseconds of at least 40.0 mN/m as measured by a maximum bubble pressure method, and a relaxation time of at least 20 milliseconds and no greater than 50 milliseconds as measured by the maximum bubble pressure method.
Assignees
Inventors
Classifications
Rheological behaviour as dispersion, e.g. viscosity, sedimentation stability · CPC title
Furnace black {; Preparation thereof (separation or recovery C09C1/487)} · CPC title
Surface area · CPC title
Oil-absorption capacity, e.g. DBP values · CPC title
Carbon black · CPC title
Patent family
Related publications grouped by family.
External sources
Frequently asked questions
Answers are generated from the same data shown on this page.
- What does patent US2021355333A1 cover?
- An inkjet ink contains at least a first carbon black, a second carbon black, and water. The first carbon black has a DBP oil absorption of less than 130 mL/100 g and a BET specific surface area of less than 300 m2/g. The second carbon black has a DBP oil absorption of at least 130 mL/100 g and a BET specific surface area of at least 300 m2/g.
- Who is the assignee on this patent?
- Kyocera Document Solutions Inc
- What technology area does this patent fall under?
- Primary CPC classification C09D11/324. Mapped technology areas include Chemistry & Metallurgy.
- When was this patent published?
- Publication date Thu Nov 18 2021 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 8 related publications on this page (citations in our corpus or others sharing the same primary CPC).