1
Jeffrey D Renk, Richard F Lehman, Mark R Fernald, Calvin M Winey: Digitizing scanner. Howtek, Cesari and McKenna, August 12, 2003: US06606171 (185 worldwide citation)

A digitizing scanner particularly for scanning transparent films such as X-rays provides an improved illuminator for transmitting light through the film. The illuminator defines a line array of a plurality of individually calibrated and controlled LEDs. The LEDs are calibrated by determining their r ...


2
Howard Robert, Helinski Richard R, Menhennett Herbert E: A method of ink jet colour printing.. Howtek, July 16, 1986: EP0187352-A2 (164 worldwide citation)

Color printing characterized by high color density and color contrast is provided by jetting an ink composition composed of an optically clear, phase change base material and a primary subtractive color dye which is soluble in the base material onto the surface of a printing medium to form a multipl ...


3
Nowak Michael T: Ink jet printer ink.. Howtek, December 30, 1986: EP0206286-A1 (158 worldwide citation)

A hot-melt subtractive ink for an ink jet printer is formed from a thermosetting resin having a high hydroxyl number and a solid organic solvent having a melting point less than 150 DEG C, together with a dye. The ink has excellent jetting characteristics, forms a hard, stable, print raised above th ...


4
Robert C Daggett, Richard R Helinski, Robert Howard, Mark W Magee: Solid ink delivery system. Howtek, Nutter McClennen & Fish, September 26, 1989: US04870430 (44 worldwide citation)

A solid ink delivery system for supplying sticks of solid ink to a ink jet printer is disclosed. The solid ink delivery system includes a delivery assembly for each color ink stick supplied to the printer. Each delivery assembly includes a tube assembly where the ink sticks are stacked prior to thei ...


5
Richard R Helinski: Color printed record and method. Howtek, Cesari and McKenna, January 26, 1988: US04721635 (38 worldwide citation)

A printed record in color comprises a transparent sheet on which is jet-printed subtractive color inks in layers of different color. The inked surface of the transparent sheet is adhered to the surface of an opaque backing sheet, usually white in color, so that the backing sheet reflects ambient lig ...


6
Richard R Helinski, Carl D Lutz, Thomas R Peer, Philip A Eno: Ink jet printer. Howtek, Cesari and McKenna, December 22, 1987: US04714936 (36 worldwide citation)

A rotary ink jet printer can print at high speed in black and white as well as in color using hot-melt inks. The printer includes a rotary print wheel which supports a plurality of ink jetters distributed around its periphery. The jetters are divided into color groups with the jetters in each group ...


7
Robert Howard, Richard R Helinski, Herbert E Menhennett: Ink jet color printing method. Howtek, Cesari and McKenna, May 3, 1988: US04741930 (35 worldwide citation)

Color printing characterized by high color density and color contrast is provided by jetting an ink composition composed of an optically clear, phase change base material and a primary subtractive color dye which is soluble in the base material onto the surface of a printing medium to form a multipl ...


8
Michael T Nowak: Ink jet printer ink. Howtek, Nutter McClennen & Fish, April 11, 1989: US04820346 (31 worldwide citation)

A hot-melt ink for an ink jet printer is formed from a solid organic solvent having a melting point less than 150.degree. C. and a low molecular weight thermosetting resin having a high hydroxyl number, together with a dye. The ink has excellent jetting characteristics, forms a hard, stable print ra ...


9
Richard R Helinski: Color printed record. Howtek, Cesari and McKenna, May 19, 1987: US04666757 (21 worldwide citation)

A printed record in color comprises a transparent sheet on which is jet-printed subtractive color inks in layers of different color. The inked surface of the transparent sheet is adhered to the surface of an opaque backing sheet, usually white in color, so that the backing sheet reflects ambient lig ...


10
Richard F Lehman, Roger A Wendt, Calvin M Winey: Calibrated color scanner with reference level adjustment. Howtek, Cesari and McKenna, August 17, 1993: US05237172 (18 worldwide citation)

A rotary color scanner has both linear and logarithmic mode static and dynamic calibration to quickly and automatically calibrate the scanner before each scan, as well as during a given scan, without operator intervention of any kind, whether in the factory or in the field. Close calibration is achi ...