Lexmark International, Inc.

Sandra Helton McCain

Agnes Kam Zimmer

Jing X Sun

Ajay Kanubhai Suthar

Scott Michael Heydinger

Terence E Franey

Charles Edward Akers, Jr

Robert Frederick Locasto

Ashok Vishnu Gangal

Vladimir Kantorovich

John Mark Medley, Jr

Phillip Wayne Sisk

John M Medley

Wendell Lake

An inkjet ink of exceptional overall color characteristics having about 4% by weight Direct Yellow 132 in acid form, about 1% by weight Acid Yellow 17 in acid form in water, also having a humectant, a penetrant and other generally known additives. The ink having chroma of at least about 108.5.

Inkjet ink having yellow dye mixture

The present invention provides pigmented inks comprising self-dispersing pigment and an amino-containing compound. The addition of an amino-containing compound to the self-dispersing pigment can improve the reliability and performance of the ink in an inkjet printhead. The present invention also provides methods for making a surface modified pigment comprising associating a self-dispersing pigment with an amino-containing compound having no more than one primary amino group or one secondary amino group.

Pigmented inkjet ink

The present invention provides inkjet inks, dye sets, and inkjet ink sets for use in inkjet printing methods. The inkjet inks and inkjet ink sets of the present invention can provide excellent photo-realistic print quality while achieving a high level of lightfastness. The inkjet ink comprises: a xanthene dye, and a metallized azo dye having the Formula (I). The inkjet ink set comprises: a magenta dye set comprising a xanthene dye, and a metallized azo dye having the Formula (I), at least one yellow ink comprising at least one yellow dye, and at least one cyan ink comprising at least one cyan dye. The present invention also provides a method of printing using the inkjet ink set of the present invention.

Inkjet ink, dye set, ink set, and method of use thereof

A jet printing ink composition which results in reduced drop misdirection and missing nozzles is provided. The aqueous-based ink composition includes at least one colorant; a wetting agent; and a co-solvent comprising a substituted or unsubstituted lactam, an amide, or mixtures thereof.

Ink jet ink containing wetting agent

The invention is directed to a method of printing using an ink jet printer which jets a first color ink and a second color ink onto a print medium at locations defined by an image area having a plurality of pixels. The method inhibits intercolor bleeding between the first color ink and the second color ink. A first array of pixels in the image area is selected, with the first array being an M.times.N array wherein M and N are integers. A portion of the first array is defined as a second array of pixels, with the second array being an X.times.Y array wherein X and Y are integers. The integers X and Y are smaller than the integers M and N, respectively. The pixels within the second array are examined. The pixels within the first array are altered if the examined pixels within the second array substantially all correspond to the first color ink.

Method of printing to inhibit intercolor bleeding

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Lexington, KY, United States of America

Sandra Helton McCain