Abstract: Embodiments of the present invention provide not only a technical solution for calibrating a positioning device but also a technical solution for characterizing an area of interest in a space. Specifically, there is provided a system, which may comprise: a tag capable of emitting ranging signals, placed at location points which are selected as space feature points in the space; a positioning device in said space, configured to obtain relative coordinates of said space feature points in relation to the positioning device based on the ranging signals from the tag; and a server, configured to determine location parameters of said positioning device in said space based on said relative coordinates, so as to calibrate said positioning device. The positioning device can be calibrated automatically, fast and accurately using the system.

Abstract: Embodiments of the present invention provide not only a technical solution for calibrating a positioning device but also a technical solution for characterizing an area of interest in a space. Specifically, there is provided a system, which may include: a tag capable of emitting ranging signals, placed at location points which are selected as space feature points in the space; a positioning device in the space, configured to obtain relative coordinates of the space feature points in relation to the positioning device based on the ranging signals from the tag; and a server, configured to determine location parameters of the positioning device in the space based on said relative coordinates, so as to calibrate the positioning device. The positioning device can be calibrated automatically, fast and accurately using the system.

Abstract: An image receiver element includes a water-soluble or water-dispersible polyurethane binder in the image receiving layer. This polyurethane has a Tg of from about 60 to about 80° C., a molecular weight of at least 25,000, and an acid number of from about 16 to about 35 mg KOH/g. Moreover, the polyurethane comprises from about 42 to about 60 weight % of recurring urethane units, from about 8 to about 20 weight % of alkylene glycol recurring units, from about 18 to about 40 weight % of carbonate recurring units having aliphatic side chains, and from about 3 to about 15 weight % of recurring units having a water-soluble or water-dispersible acid group, based on total binder weight.

Abstract: A thermal transfer donor element can be used to provide a clear protective overcoat on a thermal image receiver element from a thermal transferable protective clear film on the donor element. This thermal transferable protective clear film includes a transparent poly(vinyl acetal) binder to which are attached silicone groups to improve scratch resistance of the transferred protective overcoat. Such protective overcoats can also be applied over thermally transferred dye images.

Abstract: An autonomous ultrasonic indoor location system includes a location beacon transmitting apparatus and a location beacon receiving apparatus. The location beacon transmitting apparatus is configured to sequentially transmit US signals at a predetermined time interval upon transmission of a signal containing synchronization information.

Abstract: An ink composition comprising (a) water, (b) pigment particles, (c) at least one humectant, (d) at least one polyurethane having an average molecular weight of at least about 10,000 and a sufficient number of acid groups to provide an acid number from 60 to about 130, and being present at a weight concentration of greater than 0.7%, and (e) at least one water soluble acrylic polymer comprising carboxylic acid groups, present at a weight concentration of greater than 0.6%, wherein the acid groups on the polyurethane and acrylic polymers are at least partially neutralized only with a monovalent inorganic base.

Abstract: An aqueous inkjet printing fluid composition for use in an inkjet printer comprising a silicon-based material which contacts the aqueous printing fluid composition, comprising in a concentration sufficient to inhibit corrosion of the silicon-based material when contacted by the aqueous printing fluid composition a soluble metal ligand complex comprising a divalent or a trivalent metal M and one or more organic ligands of Formula (I): wherein X may be chosen from the group consisting of H and carboalkoxy, alkyl, alkoxy, aryl, hetaryl, carboxy, sulfo and phospho substituents; and Y may be chosen from the group consisting of H and carboalkoxy, alkyl, alkoxy, aryl, hetaryl, carboxy, amino, hydroxyl, sulfo and phospho substituents. The useful lifetime of microelectromechanical fluidic devices based on silicon fabrication is extended.

Abstract: An inkjet printing fluid composition including water and a water dispersible polyurethane additive of the general formula of (I) wherein Z is the central portion of a monomer unit that is the polymerization product of a diisocyanate; X1—Y1—X1 represents one or more soft segments wherein Y1 represents the central portion of a unit that is the polymerization product of a diamine or diol prepolymer having a molecular weight of greater than 300 Daltons; W is the central portion of one or more units containing an acid group; X2—Y2—X2 represents one or more hard segments wherein Y2 represents the central portion of a unit that is the polymerization product of a C2-C8 diol or diamine having a molecular weight of less than 250 Daltons; and X1, V and X2 can be the same or different and are an —O— or —N— atom; and further wherein the polyurethane additive has a weight average molecular weight of at least 6,000 Daltons and a sufficient number of acid groups to provide an acid number greater than 35, and the one or m

Abstract: A printing system for applying a printing fluid to a substrate, comprising a printing fluid applicator and a recirculating printing fluid supply supplying printing fluid to the applicator, wherein the printing fluid comprising water and a water dispersible polyurethane additive of the general formula of (I) wherein Z is the central portion of a monomer unit that is the polymerization product of a diisocyanate; X1—Y1—X1 represents one or more soft segments wherein Y1 represents the central portion of a unit that is the polymerization product of a diamine or diol prepolymer having a molecular weight of greater than 300 Daltons; W is the central portion of one or more units containing an acid group; X2—Y2—X2 represents one or more hard segments wherein Y2 represents the central portion of a unit that is the polymerization product of a C2-C8 diol or diamine having a molecular weight of less than 250 Daltons; and X1, V and X2 can be the same or different and are an —O— or —N— atom; and further wherein the poly

Abstract: An inkjet printer, includes an ink containing a print uniformity improving polymer obtained by chain copolymerizing at least the following ethylenically unsaturated monomers: (a) a first monomer having a lowest pKa value greater than 3 and comprising a carboxylic acid group; (b) a second monomer having a lowest pKa value less than 2; and (c) a hydrophobic third monomer; together with pigment particles that are self-dispersed or dispersed with a dispersant other than a print uniformity improving polymer, and water. Such an ink provides improve print uniformity.

Abstract: An inkjet ink composition comprising water, pigment particles dispersed with a polymeric dispersant, at least one water-dispersible polyurethane, at least one pyrrolidinone compound, glycerol, and a 1,2-alkanediol having from four to eight carbon atoms.

Abstract: A thermal, non-silver halide-containing image receiver element includes a support and an aqueous-coated image receiving layer. This receiving layer comprises a water-dispersible polymer having a polyurea or polyurethane backbone and up to 25 weight % of the water-dispersible polymer comprising polysiloxane side chains that are covalently attached to the backbone, each of the side chains having a molecular weight of at least 500. Aqueous dispersions of polyester ionomers and crosslinking agents can also be present.

Abstract: An image receiver element includes a water-soluble or water-dispersible polyurethane binder in the image receiving layer. This polyurethane has a Tg of from about 60 to about 80° C., a molecular weight of at least 25,000, and an acid number of from about 16 to about 35 mg KOH/g. Moreover, the polyurethane comprises from about 42 to about 60 weight % of recurring urethane units, from about 8 to about 20 weight % of alkylene glycol recurring units, from about 18 to about 40 weight % of carbonate recurring units having aliphatic side chains, and from about 3 to about 15 weight % of recurring units having a water-soluble or water-dispersible acid group, based on total binder weight.

Abstract: An ink jet recording element with a support having thereon an image-receiving layer of inorganic particles and stabilizer particles, the stabilizer particles being free of any organic solvent and containing greater than about 80% by weight of a water-insoluble antioxidant and having a mean particle size of greater than 5 nm, the inorganic particles being greater than about 50% by weight of the ink receiving layer.

Abstract: A thermal, non-silver halide-containing image receiver element includes a support and an aqueous-coated image receiving layer. This receiving layer comprises a water-dispersible polymer having a polyurea or polyurethane backbone and up to 25 weight % of the water-dispersible polymer comprising polysiloxane side chains that are covalently attached to the backbone, each of the side chains having a molecular weight of at least 500. Aqueous dispersions of polyester ionomers and crosslinking agents can also be present.

Abstract: A method of forming a printed image on an image receiving element is disclosed, comprising: providing an image receiving element comprising at least one activatable stiffening and/or thickening layer which comprises a polymer matrix and an activatable material; printing an image over a designated area of said image receiving element, and substantially uniformly and non-imagewise activating said activatable stiffening and/or thickening layer over the designated area of said image receiving element after step (b) to produce a printed image receiving element with an activated stiffened and/or thickened layer.

Abstract: Embodiments of the present invention provide not only a technical solution for calibrating a positioning device but also a technical solution for characterizing an area of interest in a space. Specifically, there is provided a system, which may comprise: a tag capable of emitting ranging signals, placed at location points which are selected as space feature points in the space; a positioning device in said space, configured to obtain relative coordinates of said space feature points in relation to the positioning device based on the ranging signals from the tag; and a server, configured to determine location parameters of said positioning device in said space based on said relative coordinates, so as to calibrate said positioning device. The positioning device can be calibrated automatically, fast and accurately using the system.

Abstract: The present invention provides a multi-objects positioning system and power-control based multiple access control method. The multi-objects positioning system according to the present invention comprises a plurality of tag devices carried by multiple objects and one or more positioning devices for determining the positions of the objects, wherein each of the tag devices includes a positioning device list for recording status information of the positioning devices.

Abstract: The present invention provides a method and system for positioning an object with adaptive resolution. The method comprises: dividing a space to be detected into Hot Area and General Area; arranging, according to the positions of Hot Area and General Area, high-resolution positioning signal (US) transceivers and low-resolution positioning signal (RF) transceivers, wherein the detection scope of the low-resolution positioning signal transceivers covers the space and the detection scope of the high-resolution positioning signal transceivers covers the Hot Area; and when the object moving in the space, fusing the detection results from the high-resolution positioning signal transceivers and the low-resolution positioning signal transceivers to determine the position of the object with adaptive resolution. With the system of the present invention, for different areas, the object can be positioned with different positioning resolutions (precisions or granularities).

Abstract: An inkjet printer, includes an ink containing a print uniformity improving polymer obtained by chain copolymerizing at least the following ethylenically unsaturated monomers: (a) a first monomer having a lowest pKa value greater than 3 and comprising a carboxylic acid group; (b) a second monomer having a lowest pKa value less than 2; and (c) a hydrophobic third monomer; together with pigment particles that are self-dispersed or dispersed with a dispersant other than a print uniformity improving polymer, and water. Such an ink provides improve print uniformity.