Perfluorinated polyether release agent for phase change ink members

An offset printing apparatus for printing a phase change ink onto a print medium comprising:

• a) a phase change ink component for applying a phase change ink in a phase change ink image;
• b) an imaging member for accepting said phase change ink image from said phase change ink component, and transferring the phase change ink image from said imaging member to said print medium and for fixing the phase change ink image to said print medium, the imaging member comprising:
• i) an imaging substrate, and thereover
• ii) an outer layer comprising a fluoroelastomer;
• and
• iii) a release agent material coating, wherein the release agent material coating comprises a perfluorinated polyether having a skeleton selected from the group consisting of Formulas I and II and mixtures thereof:
• CF3—(CF2CF2)m—O—(R1R2O)—(R3R3O)n—(R3O)p—(CF2)q—CF3 Formula I
• wherein R1 is selected from the group consisting of CF2, CF—CF3, and —NR4R5;
• R2 is selected from the group consisting of CF2, CF—CF3, and —NR4R5;
• R3 is selected from the group consisting of CF2 and CF3;
• R4 is selected from the group consisting of hydrogen, alkyl group having from about 1 to about 18 carbon atoms, arylalkyl group having from about 7 to about 18 carbon atoms, mercapto, hydride and carbinol functional group;
• R5 is selected from the group consisting of alkyl having from about 1 to about 20 carbons, and a fluoroalkyl having from about 2 to about 10 carbons;
• m is a number of 0 or 1;
• n is a number of from about 0 to about 500;
• p is a number of from about 0 to about 100;
• q is a number of 0 or 1;
• and p+n is a number of from about 100 to about 500;
• and
• R1—(CF2CF2)m—O—(R2R2O)n—(R2O)p—(CF2)q—CF2—R1 Formula II
• wherein R1 is CF3;
• R2 is selected from the group consisting of CF2 and CF—CF3;
• m is a number of 0 or 1;
• n is a number of from about 0 to about 500;
• p is a number of from about 0 to about 100;
• q is a number of aor 1;
• and p+n is a number of from about 100 to about 500;
• and
• c) a heating member associated with the offset printing apparatus.

An offset printing apparatus comprising:

• a) a phase change ink component containing a phase change ink;
• b) a imaging member comprising:
• i) an imaging substrate, and thereover
• ii) an optional outer layer;
• and
• iii) a release agent material coating, wherein the release agent material coating comprises a perfluorinated polyether having a skeleton selected from the group consisting of Formulas I and II and mixtures thereof:
• CF3—(CF2CF2)m—O—(R1R2O)—(R3R3O)n—(R3O)p—(CF2)q—CF3 Formula I
• wherein R1 is selected from the group consisting of CF2, CF—CF3, and —NR4R5;
• R2 is selected from the group consisting of CF2, CF—CF3, and —NR4R5;
• R3 is selected from the group consisting of CF2 and CF3;
• R4 is selected from the group consisting of hydrogen, alkyl group having from about 1 to about 18 carbon atoms, arylalkyl group having from about 7 to about 18 carbon atoms, mercapto, hydride and carbinol functional group;
• R5 is selected from the group consisting of alkyl having from about 1 to about 20 carbons, and a fluoroalkyl having from about 2 to about 10 carbons;
• m is a number of 0 or 1;
• n is a number of from about 0 to about 500;
• p is a number of from about 0 to about 100;
• q is a number of 0 or 1;
• and p+n is a number of from about 100 to about 500;
• and
• R1—(CF2CF2)m—O—(R2R2O)n—(R2O)p—(CF2)q—CF2—R1 Formula II
• wherein R1 is CF3;
• R2 is selected from the group consisting of CF2 and CF—CF3;
• m is a number of 0 or 1;
• n is a number of from about 0 to about 500;
• p is a number of from about 0 to about 100;
• q is a number of 0 or 1;
• and p+n is a number of from about 100 to about 500;
• and
• c) a heating member associated with said offset printing apparatus, wherein said phase change ink component dispenses said phase change ink onto said imaging member, and wherein said phase change ink is solid at about 25° C.