Abstract: Techniques for liquid replenishment in a printer/plotter. An ink delivery system (IDS) is employed wherein the on-carriage spring reservoir of the print cartridge is manually and securely connected to the off-carriage reservoir. A pen cartridge that uses an internal spring to provide vacuum pressure is connected from an inlet port through a unitary coupler to an ink reservoir located off the scanning carriage axis. The coupler serves to align as well as to secure two mating valves to securely hold them together in an open latched position which is not intended to be modified or disconnected until the entire ink supply has been depleted. A replaceable ink supply module for providing replenishment of an inkjet printhead includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation.

Abstract: Techniques for liquid replenishment in a printer/plotter. An ink delivery system (IDS) is employed wherein the on-carriage spring reservoir of the print cartridge is manually and securely connected to the off-carriage reservoir. A pen cartridge that uses an internal spring to provide vacuum pressure is connected from an inlet port through a unitary coupler to an ink reservoir located off the scanning carriage axis. The coupler serves to align as well as to secure two mating valves to securely hold them together in an open latched position which is not intended to be modified or disconnected until the entire ink supply has been depleted. A replaceable ink supply module for providing replenishment of an inkjet printhead includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation.

Abstract: An ink replenishment kit and method for an inkjet printer includes a replaceable ink supply module providing replenishment of an inkjet printhead, The module includes a collapsible bag, an enclosure box, a connective tube, and an on/off valve. These four components are incorporated into a composite sealed system which remains intact during shipment, storage, installation and operation. A coupler is provided to securely attach a print cartridge inlet with the on/off valve to hold them together in an open position allowing ink to be replenished into the print cartridge from the collapsible bag.

Abstract: A unitary coupler and method is provided for interconnecting an ink supply with an inkjet printhead. The coupler includes a first set of latching surfaces for attaching the coupler to the printhead; a second set of latching surfaces integral with the coupler for locking engagement with an inlet valve from an off-carriage ink supply; and alignment guides at one end for receiving the inlet valve. In a preferred method the coupler is initially attached to the printhead and subsequently attached to the inlet valve from the ink supply.

Abstract: A portable, stand-alone compact optical scanning apparatus includes a housing member in which is mounted a printed circuit board, a semicircular mirror member mounted on the printed circuit board having a cone shaped edge portion, a light emitting element mounted on the mirror member for projecting scanning light beams within the housing member, a multifaceted rotating spinner mounted on said printed circuit board extending through said mirror member for directing the light beams at a plurality of pattern forming mirror members which reflect the light beams at the edge portion of the mirror member which in turn reflects the light beams through an aperture in the cover portion of the housing member, the scan pattern scanning a bar code label on a merchandise item positioned on top of the housing adjacent the aperture. A collection system is mounted on the mirror member for generating electrical signals in response to detecting the reflected light beams from the scanned bar code label.

Abstract: A substantially pure, hemagglutinin-free composition of trichosanthin, and a method of producing the composition is disclosed. A plant extract from Trichosanthes kirilowii is contacted with an anionic exchange resin to remove contaminating hemagglutinins, and trichosanthin is further purified from the extract by cation exchange chromatography to a purity of greater than 95%.

Abstract: An analog to digital wave shaping system comprising, a source of analog signals, adaptive threshold circuitry coupled to said source, said adaptive threshold circuitry having an output selected as a function of the intensity of said analog signal compared to a fixed intensity signal, and, comparator circuitry coupled to said source and to the output of said adaptive threshold circuitry.

Abstract: A symbol decoding system for decoding symbols comprised of plurality of bars some of which representing characters, comprising, means for providing a series of pulses representative of said bars, means for counting the interval between positive transitions between adjacent pulses, means for counting the interval between negative transitions between adjacent pulses, means for storing said counted intervals, means for testing for certain predetermined relationships among said counted intervals, and means identifying particular characters whenever said predetermined relationships are satisfied.

Abstract: Optical scanning apparatus for scanning and sensing information contained on a label-bearing article includes a light source, a rotatable member having a reflective surface, optical means for directing light from the source to the reflective surface and optical means for directing light reflected from the reflective surface to form a scanning pattern on a predetermined plane; the scanning pattern being comprised of a plurality of segments together forming at least one pair of overlapping X-shaped traces.

Abstract: An optical scanning station includes means for generating a predetermined scanning pattern along a given plane, and a member embodying said scanning pattern in the form of open slots substantially coincident with said given plane.