Phase change ink

• US 8,840,232 B2
• Filed: 04/27/2011
• Issued: 09/23/2014
• Est. Priority Date: 04/27/2011
• Status: Expired due to Fees

• Current Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Original Assignee: Xerox Corporation (Xerox Holdings Corp.)
• Inventors: Morimitsu, Kentaro, Belelie, Jennifer L., Chopra, Naveen, Drappel, Stephan V., Tracy, Corey L., Odell, Peter G.
• Primary Examiner(s): MARTIN, LAURA E
• Application Number:
  US13/095,028
• Publication Number:
  US 20120274698A1
• Time in Patent Office: 1,245 Days
• Field of Search: 347/100
• US Class Current: 347/100
• CPC Class Codes: C09D 11/34 Hot-melt inks
• CPC Class Codes: C09D 11/38 characterised by non-macromolecular additives other than solvents, pigments or dyes

Abstract

A phase change ink including at least one crystalline component of the formula

wherein R¹ and R² can be the same or different, and wherein R¹ and R² each, independently of the other, is (i) an alkyl group, (ii) an arylalkyl group, (iii) an alkylaryl group, or (iv) an aromatic group, provided that at least one of R¹ and R² is an aromatic group, and wherein the crystalline component has a melting point of from about 65° C. to about 150° C.; at least one amorphous component; and an optional colorant.

Claims

1. A phase change ink comprising:

at least one crystalline component of the formula

2. The phase change ink of claim 1, wherein the at least one crystalline component has a crystallization temperature of greater than about 65°

C. to less than about 140°

C.

3. The phase change ink of claim 1, wherein the phase change ink has a viscosity of about 0.5 to about 10 centipoise at a jetting temperature of about 140°

C.

4. The phase change ink of claim 1, wherein at least one of R¹ and R² is of the formula

5. The phase change ink of claim 1, wherein each of R¹ and R² is an aryl group.

6. The phase change ink of claim 1, wherein the at least one crystalline component is a compound of the formula

7. The phase change ink of claim 1, wherein the ratio of crystalline component to amorphous component is from about 60:

40 to about 95;

5 percent by weight, based upon the total combined weight of the crystalline and amorphous components.

8. The phase change ink of claim 1, wherein the amorphous component is a compound of the formula

9. The phase change ink of claim 8, wherein R³, R⁴, and R⁵ are the same.

10. The phase change ink of claim 8, wherein the amorphous component is a compound of the formula