Abstract: A watermark formed of a bistable material, and a method of forming the watermark, are described.

Abstract: A watermark formed of a bistable material, and a method of forming the watermark, are described.

Abstract: A bistable display having one or more permanent hideable mark, and a method of forming the permanent hideable mark, are described. The permanent hideable mark can be hidden and revealed numerous times without loss of information.

Abstract: A bistable display having one or more permanent hideable mark, and a method of forming the permanent hideable mark, are described. The permanent hideable mark can be hidden and revealed numerous times without loss of information.

Abstract: A printhead and method of forming the printhead are provided. The method includes forming an ink feed passage through a print head substrate by providing a metallic substrate having a first surface and a second surface; providing an ink ejector structure on a first surface of the metallic substrate; providing a mask over the second surface of the metallic substrate to define the ink feed passage; and forming the ink feed passage from the second surface of the metallic substrate using a liquid etchant.

Abstract: A bistable display having one or more permanent hideable mark, and a method of forming the permanent hideable mark, are described. The permanent hideable mark can be hidden and revealed numerous times without loss of information.

Abstract: A display, a signage system including the display, and methods of writing the display, are described, wherein the system includes at least one display, at least one writing unit, and at least one holder. Each display includes at least one bi-stable display element and at least one electrical interconnect substrate. The display can be written using the writing unit and displayed in the writing unit or in the holder.

Abstract: A print head includes a substrate with a plurality of row conductors arranged on the substrate, a plurality of column conductors arranged on the substrate, and a plurality of ejectors a arranged on the substrate in rows and columns. Each of the plurality of ejectors includes a resistive element arranged over the substrate and a supply passage through the substrate dedicated to each of the plurality of ejectors. A semiconductor device is associated with each resistive element. The semiconductor device is responsive to a signal from one of the plurality of row conductors or one of the plurality of column conductors to actuate the resistive element associated with the semiconductor device.

Abstract: A printhead and method of forming the printhead are provided. The method includes forming an ink feed passage through a print head substrate by providing a metallic substrate having a first surface and a second surface; providing an ink ejector structure on a first surface of the metallic substrate; providing a mask over the second surface of the metallic substrate to define the ink feed passage; and forming the ink feed passage from the second surface of the metallic substrate using a liquid etchant.

Abstract: A composite comprises conductive particles within a binder matrix, the particles being colloidably unstable within a solution and forming a conductive open network within the binder matrix when dried.

Abstract: A watermark formed of a bistable material, and a method of forming the watermark, are described.

Abstract: A print head assembly is provided. The printhead includes a substrate including a plurality of electrical contacts and an array of ejectors arranged on the substrate. Each ejector includes a chamber including a nozzle. A resistive element is associated with the chamber and is operable to eject liquid from the chamber through the nozzle of the chamber when actuated through the plurality of electrical contacts. At least one supply passage through the substrate supplies fluid to each ejector. A printhead holder includes a structure to retain the printhead in a fixed position and a manifold to supply fluid to each ejector through the at least one supply passage. A removable frame has a first position and a second position relative to the printhead holder.

Abstract: The present invention relates to a display sheet comprising a substrate for carrying layers of material, an imaging layer comprising a bistable polymer dispersed cholesteric liquid crystal imaging layer, a first patterned transparent conductor disposed on one side of the bistable polymer dispersed cholesteric liquid crystal imaging layer, a field blooming color filter layer, and a second patterned electrode on the side of the bistable polymer dispersed cholesteric liquid crystal imaging layer opposite the first patterned conductor and a method for making the same.

Abstract: A method of printing, a printer, and a printhead for printing drops spaced from each other at a printed drop pitch P are provided. The printhead includes an array of N rows of nozzles. Each nozzle row of the N rows of nozzles is spaced apart from adjacent rows of nozzles by a distance D, where D is an integer multiple of P minus a correction factor C, where C=(P/N).

Abstract: A printhead includes a plurality of nozzle arrays disposed on a substrate. Each nozzle array is positioned on the substrate to eject droplets of a liquid spaced apart from each other on a receiver. Each nozzle array is positioned relative to other nozzle arrays such that liquid ejected from the plurality of nozzle arrays is sufficient to cover a surface of the receiver in a single relative motion of the printhead and the receiver.

Abstract: A print head includes a substrate and an ejector. The substrate includes a first side and a second side. The ejector is located on the first side of the substrate and includes a fluid chamber with portions of the fluid chamber defining a nozzle bore, and a resistive element operable to eject fluid present in the fluid chamber through the nozzle bore of the fluid chamber. The resistive element is electrically connected to the substrate. A conductor is located on the second side of the substrate and is electrically connected to the substrate. A supply passage is located through the conductor and the substrate and is in fluid communication with the fluid chamber of the ejector to supply a fluid to the fluid chamber.

Abstract: A print head includes a substrate with a plurality of row conductors arranged on the substrate, a plurality of column conductors arranged on the substrate, and a plurality of ejectors a arranged on the substrate in rows and columns. Each of the plurality of ejectors includes a resistive element arranged over the substrate and a supply passage through the substrate dedicated to each of the plurality of ejectors. A semiconductor device is associated with each resistive element. The semiconductor device is responsive to a signal from one of the plurality of row conductors or one of the plurality of column conductors to actuate the resistive element associated with the semiconductor device.

Abstract: The present invention relates to a display comprising a substrate, a patterned conductor, and a liquid crystal material having cleared areas and electrically writeable areas. The invention also relates to a method for making a display comprising providing a substrate having a patterned conductor thereon, applying a non-cleared liquid crystal material to the substrate, clearing the non-cleared liquid crystal material to produce a cleared liquid crystal material, applying a field to the patterned conductor to produce an image comprised of areas of cleared liquid crystal material and electrically writeable areas of crystal material.

Abstract: A method and system for conserving power and extending battery life in a device are provided wherein the method and system include the use of a save circuit to transfer unused energy from a capacitor back into a battery in the device.

Abstract: The present invention relates to a display sheet comprising a substrate for carrying layers of material, an imaging layer comprising a bistable polymer dispersed cholesteric liquid crystal imaging layer, a first patterned transparent conductor disposed on one side of the bistable polymer dispersed cholesteric liquid crystal imaging layer, a color filter layer, at least one reflective field blooming layer coated over the color filter layer, a second patterned electrode on the side of the bistable polymer dispersed cholesteric liquid crystal imaging layer opposite the first patterned conductor and a method for making the same.