Electrophotographic ink including a volatile fragrance

Patent metadata

Field	Value
Publication number	US-10514625-B2
Application number	US-201616073436-A
Country	US
Kind code	B2
Filing date	Mar 9, 2016
Priority date	Mar 9, 2016
Publication date	Dec 24, 2019
Grant date	Dec 24, 2019

Abstract

According to an example, an electrophotographic ink may include an adsorbent, a volatile fragrance, a resin and a carrier liquid.

First claim

What is claimed is:

1. A method comprising:
soaking an adsorbent and a volatile fragrance in an organic solvent;
evaporating the organic solvent to form fragrant adsorbent particles;
grinding the fragrant adsorbent particles with a resin and a carrier liquid to form a paste; and
diluting the paste to form an electrophotographic ink.

2. The method of claim 1 , wherein a weight ratio of the adsorbent to the volatile fragrance ranges from 1:5 to 1:20 by weight.

3. The method of claim 1 , wherein the soaking occurs for a period of time ranging from 15 hours to 48 hours.

4. The method of claim 1 , wherein 100 wt. % of the organic solvent is evaporated from the fragrant adsorbed particles.

5. The method of claim 1 , wherein after evaporation trace amounts of the organic solvent remain in the fragrant adsorbed particles.

6. The method of claim 1 , wherein the evaporation of the organic solvent occurs in a period of time ranging from 20 minutes to 3 hours.

7. The method of claim 1 , wherein the adsorbent is an adsorbent particle chosen from fumed aerosols, aerogels, silica gels, silica, precipitated silicon, vapor deposited silicon, clay, kaolin, perlite, bentonite, talc, mica, calcium carbonite, titanium dioxide, zinc oxide, iron oxide, silicon dioxide, or combinations thereof.

8. The method of claim 1 , wherein the adsorbent is an absorbent having a pore size ranging from 0.5 nm to 80 nm.

9. The method of claim 1 , wherein the adsorbent is an absorbent particle having a BET surface area ranging from 25 m 2 /g to 1000 m 2 /g.

10. The method of claim 1 , wherein the adsorbent is an adsorbent particle having a BET surface area ranging from 50 m 2 /g to 600 m 2 /g.

11. The method of claim 1 , wherein for every 1 gram of adsorbent, from 5 grams to 20 grams of volatile fragrance is present.

12. The method of claim 1 , wherein the volatile fragrance is chosen from natural or synthetic fragrance materials.

13. The method of claim 1 , wherein the carrier liquid has a low dielectric constant.

14. The method of claim 1 , the electrophotographic ink comprising a pigment.

Assignees

• Hp Indigo Bv

Inventors

• Farran Samer
• Nesher Guy
• Grinwald Yaron
• Stein Shahar
• Zabar Shiran
• Azzam Tony

Classifications

• G03G9/122

  characterised by the colouring agents · CPC title

• G03G9/13

  characterised by polymer components · CPC title

• G03G9/125

  characterised by the liquid · CPC title

• C09D11/52

  Electrically conductive inks · CPC title

• G03G9/135 Primary

  characterised by stabiliser or charge-controlling agents · CPC title