Abstract: The present invention provides a battery powered, hand-held signaling device having an illuminated display capable of selectively displaying illuminated indicia including the words “STOP”, “SLOW” and “GO”. The illuminated indicia are preferably color-coded, whereby the word “STOP” is displayed in illuminated red letters, the word “GO” is displayed in illuminated green letters, and the word “SLOW” is illuminated in yellow letters thereby maximizing recognition by an observer, such as the driver of an approaching vehicle. Selection of a particular message to be displayed is accomplished by user actuation of suitable electrical switching circuitry. In alternate embodiments, the device may be adapted for displaying a host of other illuminated messages, such as “TURN RIGHT,” “TURN LEFT,” “PARK,” etc.

Abstract: The invention provides a printhead for an ink jet printer and a method for making a printhead for an ink jet printer. The printhead includes a printhead body having a chip surface side, an ink surface side opposite the chip surface side and a first coefficient of thermal expansion (CTE). A semiconductor chip containing ink ejector devices is adhesively attached to the chip surface side of the printhead body. A stiffener is adhesively attached to the ink surface side to provide body stiffening during curing of the adhesive. The semiconductor chip has a second CTE and the stiffener has a third CTE wherein the second and third CTE's have a similar value. The invention provides an improved structure for printheads which resist warpage and/or breakage of the semiconductor chips during the manufacturing process used to make the printheads.

Abstract: The invention provides a printhead for an ink jet printer and a method for making a printhead for an ink jet printer. The printhead includes a printhead body having a chip surface side, an ink surface side opposite the chip surface side and a first coefficient of thermal expansion (CTE). A semiconductor chip containing ink ejector devices is adhesively attached to the chip surface side of the printhead body. A stiffener is adhesively attached to the ink surface side to provide body stiffening during curing of the adhesive. The semiconductor chip has a second CTE and the stiffener has a third CTE wherein the second and third CTE's have a similar value. The invention provides an improved structure for printheads which resist warpage and/or breakage of the semiconductor chips during the manufacturing process used to make the printheads.

Abstract: The present invention provides a battery powered, hand-held signaling device having an illuminated display capable of selectively displaying illuminated indicia including the words “STOP”, “SLOW” and “GO”. The illuminated indicia are preferably color-coded, whereby the word “STOP” is displayed in illuminated red letters, the word “GO” is displayed in illuminated green letters, and the word “SLOW” is illuminated in yellow letters thereby maximizing recognition by an observer, such as the driver of an approaching vehicle. Selection of a particular message to be displayed is accomplished by user actuation of suitable electrical switching circuitry. In alternate embodiments, the device may be adapted for displaying a host of other illuminated messages, such as “TURN RIGHT,” “TURN LEFT,” “PARK,” etc.