Ink jet compositions and method
AssigneeExxon Research & Engineering Co.
InventorsTheodore M. Cooke, Richard G. Whitfield, An-Chung R. Lin
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Abstract
An ink jet composition and method of applying same is featured providing exceptionally good print quality on a wide range of printing papers. The ink composition includes a mixture of oleic acid in an approximate weight of from 20 to 80 percent of the total mixture and a dye in a dye solvent. The mixture is jetted at a temperature of approximately 135.degree. F. The average dot circularity for a dot jetted upon the paper is approximately 0.7 or better.
Claims18
A fluid composition which has a surface tension greater than approximately 35 dynes/cm. and which can provide good print quality defined by an average dot circularity of approximately better than 0.7 for a wide range of printing papers such that it is suitable for use as an ink in ink jet systems, comprising a substantially non-aqueous printing medium including a mixture of oleic acid in an approximate weight of from 20 to 80 percent of the total mixture composition and a dye in a dye solvent, said solvent selected from a group consisting of at least one of:
- an aromatic alcohol, an aromatic ether, dimethyl sulfoxide, an alkyl pyrrolidone, methoxy- and ethoxy- triglycol.
A fluid composition which has a surface tension greater than approximately 35 dynes/cm. and which can provide good print quality defined by an averge dot circularity of approximately better than 0.7 for a wide range of printing papers such that it is suitable for use as an ink in ink jet systems, comprising a substantially non-aqueous printing medium including a mixture of oleic acid in an approximate weight of from 20 to 80 percent of the total mixture composition and a dye.
A method of fluid printing, comprising the steps of:
- (a) formulating an ink jet medium having an approximate surface tension greater than 35 dynes/cm comprising a substantially non-aqueous fluid mixture of:
- a dye and approximately 20 to 80 weight percent of oleic acid in the total mixture;
- (b) jetting said ink jet medium at a temperature in an approximate range of from 125.degree. F. to 145.degree. F. towards a printing paper medium;
- and
- (c) forming a plurality of dots upon said printing paper medium having an average circularity of better than 0.7.
Dependencies are inferred from the claim text.