1
Mark S Hickman, Loren E Johnson, John L Stoffel, Ronald A Askeland, Catherine B Hunt, Howard Matrick, Keshava A Prasad, John T Rich, Leonard Slevin, John R Moffatt: Aqueous ink compositions containing anti-curl agents. E I Du Pont de Nemours and Company, October 18, 1994: US05356464 (123 worldwide citation)

Aqueous ink compositions containing anti-curl agents substantially reduce or eliminate paper curl in plain-paper printed elements without adversely effecting storage stability, decap properties or print quality, and thus eliminate the need for expensive and bulky mechanical curl-arresting devices or ...


2
Leonard Slevin, Mark S Hickman: Plain paper inks. Hewlett Packard Company, May 12, 1992: US05112399 (15 worldwide citation)

Inks for printing on plain papers are provided for thermal ink-jet printers. The inks comprise a vehicle comprising about 5 to 20 wt % of a glycol or glycol ether and the balance water, about 1 to 6% of a dye, and about 0.1 to 1% of an alginate. The alginate increases the viscosity to increase the f ...


3
John L Stoffel, Keshava A Prasad, Ronald A Askeland, Michele E Shepard, Frank Drogo, Leonard Slevin, Mark S Hickman, Clayton L Holstun: Color ink-jet printer with pigment black and dye-based color inks. Hewlett Packard Company, April 28, 1998: US05745140 (13 worldwide citation)

A color ink-jet printer is provided, with one pen for dispensing black ink onto a print medium and at least one pen for dispensing color ink onto a print medium. The pen for dispensing black ink contains a pigment-based ink and the pen(s) for dispensing color ink contain a water-miscible dye-based i ...


4
Kai Kong Iu, Leonard Slevin, William A Houle: Ink-jet inks and method for printing the same. Hewlett Packard Company, August 15, 2000: US06102998 (6 worldwide citation)

Ink-jet inks and method of printing using the same are provided, the inks comprising at least one colorant and an aqueous vehicle, the vehicle comprising at least one anionic or nonionic surfactant, at least one alkoxylated polyhydroxy organic solvent, at least one water-miscible organic solvent; an ...


5
John L Stoffel, Keshava A Prasad, Ronald A Askeland, Michele E Shepard, Frank Drogo, Leonard Slevin, Mark S Hickman, Clayton L Holstun: Printer with pen containing a low dot spread black ink and a high dot spread color ink. Hewlett Packard Company, Jerry R Potts, March 9, 1999: US05880758 (4 worldwide citation)

A color ink-jet printer is provided, with one pen for dispensing black ink onto a print medium and at least one pen for dispensing color ink onto a print medium. The pen for dispensing black ink is adapted to jet droplets of black ink of a first volume and the pen(s) for dispensing color ink are ada ...