Inventor

ASKELAND RONALD A

US66 patents

⚠️ This page may combine multiple inventors who share the name “ASKELAND RONALD A”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ASKELAND RONALD A

HEWLETT PACKARD CO

Multi-chamber ink supply

Print mode for improved leading and trailing edges and text print quality

Alignment of ink dots in an inkjet printer

Printer having precision ink drying capability and method of assembling the printer

Method for controlling the over-energy applied to an inkjet print cartridge using dynamic pulse width adjustment based on printhead temperature

High efficiency orifice plate structure and printhead using the same

Inkjet printer with increased print resolution in the carriage scan axis

Servicing a newly-installed ink pen to eliminate uneven print quality without excessive wasting of ink

Printing strategy for improved image quality and durability

Apparatus for generating high frequency ink ejection and ink chamber refill

Banding reduction in multipass printmodes

Very-high-ratio mixed resolution and biphod pens for low-cost fast bidirectional one-pass incremental printing

Apparatus for generating high frequency ink ejection and ink chamber refill

Reactive ink set for ink-jet printing

Customizing printmasks for printhead nozzle aberrations

Color ink-jet printer with pigment black and dye-based color inks

Method for increased print resolution in the carriage scan axis of an inkjet printer

Dyes containing lithium for ink-jet printing inks

Dyes containing tetramethylammonium cation for ink-jet printing inks

Apparatus and method for hue shift compensation in a bidirectional printer

Printing system that utilizes print masks with resolutions that are non-integral multiples of each other

Hybrid multi-drop/multi-pass printing system

Fractional dot column correction for scan axis alignment during printing

Bi-directional printmode for improved edge quality

Multi-chamber fluid supply

Printing system that utilizes continuous and non-continuous firing frequencies

Multi-drop merge on media printing system

Hybrid printmask for multidrop inkjet printer

Reduction of periodic artifacts in incremental printing, through use of asymmetric randomized superpixels

Method of generating randomized masks to improve image quality on a printing medium

Printer with pen containing a low dot spread black ink and a high dot spread color ink

Inking for color-inkjet printers, using non-integral drop averages, media varying inking, or more than two drops per pixel

Ink jet printer with controlled time-delay between application of different types of liquid inks

HEWLETT PACKARD DEVELOPMENT CO

Nozzle distribution

Misfiring print nozzle compensation

System and method for predicting dynamic thermal conditions of an inkjet printing system

Composition and ink receiving system incorporating the composition

Ink-jet printing methods and systems providing improved image durability

Print direction dependent firing frequency for improved edge quality

Hybrid electro-photographic/ink-jet press print systems and primers

Disabling ink ejection elements to decrease dot placement artifacts in an inkjet printhead

System and method for decreasing print banding with time delay synchronization of ejected ink

Printing data on a non-integer dot grid for improved saturation

Media print system

System and method for leveling printhead carriage usage

System and method for using lower data rates for printheads with closely spaced nozzles

DU PONT

Aqueous ink compositions containing anti-curl agents

Aqueous anionic dye based ink jet inks

STOFFEL JOHN L

Composition and ink receiving system incorporating the composition

GILA OMER

Inkjet imaging methods, imaging methods and hard imaging devices