Abstract: An ink jet print head has first nozzles of a first diameter for ejecting droplets of ink having a first mass, and second nozzles of a second diameter for ejecting droplets of ink having a second mass. The first diameter is larger than the second diameter, and the first mass is larger than the second mass. First and second heater-switch pairs are connected in parallel on a substrate of the print head. The first heater-switch pairs include first heaters adjacent corresponding first nozzles, and the second heater-switch pairs include second heaters adjacent corresponding second nozzles. The first and second heaters are composed of electrically resistive material occupying first and second heater areas on the substrate. The first heater-switch pairs also include first switching devices connected in series with the first heaters, with each first switching device developing a first switching device voltage drop as a first electrical current flows through.

Abstract: A durable chair mat has a resin impregnated backing sheet base layer, a polyvinylchloride middle layer and a wood veneer top layer laminated together.

Abstract: The invention is directed to an ink jet printer including a printhead and a printhead driver. The printhead includes a substrate, a nozzle plate having a plurality of ink emitting orifices, a plurality of jetting heaters on the substrate and respectively associated with the plurality of ink emitting orifices, and at least one substrate heater associated with the substrate. Each of the jetting heaters and the substrate heaters include first and second terminals. The printhead driver has a plurality of energizable outputs including at least one power line output and at least two enable line outputs. One power line output is electrically connected to a first terminal of each of a jetting heater and a substrate heater. Two of the enable line outputs are coupled to a second terminal of the jetting heater and a second terminal of the substrate heater.

Abstract: An ink jet print head identification system for providing print head identifying information to the electronics of an ink jet printer includes one or more parallel load, serial out, dynamic shift registers integrated into a print head chip having a plurality of address lines interconnecting the printer electronics and the print head electronics. The memory input of each shift register is electrically connected to a memory matrix that supplies digital bits of information to the shift register in response to receiving a decode signal function from the printer electronics. In a preferred embodiment, two of the address lines provide each of the registers with successive sequential clock signals to serially shift the bit of information received from the shift register's corresponding memory matrix to an output line where the print head identifying information is read by the printer electronics.

Abstract: Method and apparatus is described for detecting faults, such as cracks, in ink jet printhead heater chips using a resistor on the heater chip. The resistor is located adjacent to at least one edge of the heater chip. One method, for example, includes the steps of measuring the resistance of the resistor at a first temperature and comparing the measured electrical resistance to a theoretical calculated resistance. Another method, for example, includes the steps of measuring the resistance at a first temperature, heating the chip, and measuring the resistance at a second temperature. Faults are detected by comparing expected changes in resistance or temperature to measured changes.

Abstract: An ink jet print head identification system for providing print head identifying information to the electronics of an ink jet printer includes one or more parallel load, serial out, dynamic shift registers integrated into a print head chip having a plurality of address lines interconnecting the printer electronics and print head electronics. Each shift register is programmed or encoded with a single digital bit. In one embodiment, a voltage pulse (load signal) received on a single chip address line by a plurality of shift registers loads the input of each encoded register with the register's own encoded bit. Two of the address lines provide each of the registers with successive sequential clock signals to serially shift the encoded information to an output device where the print head identifying information is read by the printer electronics. Other embodiments of the invention may employ any number of encoded registers independently of the number of available address lines.

Abstract: Broadly this invention provides inbred corn line ZS01231. The methods for producing a corn plant by crossing the inbred line ZS01231 are encompassed by the invention. Additionally, the invention relates to the various parts of inbred ZS01231 including culturable cells. This invention relates to hybrid corn seeds and plants produced by crossing the inbred line ZS01231 with at least one other corn line.

Abstract: An ink jet printing apparatus includes a printhead controller including a printhead driver circuit having a set of ink jet nozzle control outputs and a printhead select circuit having a plurality of printhead select outputs. A plurality of printheads are provided, wherein each printhead includes a plurality of ink jet nozzles, a plurality of individually controllable ink jet nozzle firing circuits, and a printhead enable circuit, wherein the printhead enable circuit is electrically coupled between the plurality of individually controllable ink jet nozzle firing circuits and the set of ink jet nozzle control outputs, and wherein the printhead enable circuit is electrically coupled to one of the plurality of printhead select outputs and enables the electrical conduction of the plurality of controllable ink jet nozzle firing circuits upon receipt of a printhead select signal from one of the printhead select outputs of the printhead select circuits.

Abstract: A mat for a desk or other type of furniture. It incorporates a plurality of layers glued together, including a bottom layer of cork, a middle layer made up of a single sheet of uniform plastic material, and a top layer. The top layer is any of wood, soft metal, and vinyl.

Abstract: A computerized, self-contained, internal supercharged, positive displacement, internal combustion engine that transfers the work being generated in the combustion cylinder directly into useful work in a pump without the disadvantages of crankshafts, camshafts, and powertrain. A piston-rod assembly that has a much smaller frictional surface area replaces the above crankshafts, camshafts, and powertrain. The elimination of the crankshaft, and other associated parts reduces operational, maintenance, and manufacturing cost. Conventional engines that employ a crankshaft as a means of extracting work from the combustion cylinder have reached their innate design limits. This novel device will allow further development of the positive displacement, internal combustion engine; can be employed in certain applications that crankshafted devices cannot; and open new applications. It can be used directly as a pump or in systems requiring a pump. Its application can be stationary, mobile, and transportation vehicles.

Abstract: An ink jet print head identification system for providing print head identifying information to the electronics of an ink jet printer includes one or more programmable drain transistors integrated onto a print head chip. Existing address lines that interconnect the printer electronics and print head electronics are used to serially read the digital contents of each programmed transistor. The printer electronics reads each bit by combinationally applying a pull up voltage on two of the address lines while pulling down the voltage on one address line. If the drain of the transistor being read is programmed as an electrically conducting short, then the transistor will turn on and the voltage level on one of the pulled up address lines will not reach a logic high. If the drain is programmed as a non-conducting gap, the transistor will not conduct and the voltage level on both pulled up lines reach a logic high.

Abstract: A desk mat for a desk or other piece of furniture. The mat includes a plurality of layers of wood, which are by nature biodegradable. The top layer is a veneer and is of wood in its natural condition. The other layers include a cork layer and a chip board layer, but the veneer is continuous and integral wood. A glue, which is practically degradable, glues the layers together, and the finished mat is coated with a finish coating. The coating protects the layers and enables the finished mat to be bent or curved without cracking or other debilitation of the mat.

Abstract: A continuous process of forming a sheet of thermoplastic material by sequentially pressing against one face of the hot sheet of material the cold tips of projections set in and extending normally from a first series of separately moveable combs and sequentially pressing against the second face of the material the cold tips of projections set in and extending normally from a second series of separately moveable combs so that the projections of the first series of combs interpenetrate with the projections of the second series of combs in such a manner that the projections of the first series are spaced from the projections of the second series by a distance greater than the thickness of the sheet; and the interpenetrated projections are substantially parallel during the act of interpenetration; and wherein the interpenetrated combs are moved along at the speed of the sheet until the sheet is set and the combs are then removed and recycled.

Abstract: A process of cold drawing a shaped plastic sheet wherein said sheet has an array of substantially parallel rows of hollow pointed projections on one or both faces; said projections having at least a portion of the distal portion of the sides at an angle of over 60.degree. to the median plane of the sheet which process comprises cold drawing the shaped plastic sheet along an axis in the plane of the sheet normal to the rows of hollow projections.

Abstract: A lubrication system including a base with shoulder straps. A motor pressurizes grease received from cylinders having spring urged pistons. The pressurized grease is discharged by a grease gun at the end of a grease hose with a grease gun mounted switch controlling motor operation. The grease cylinders are removably mounted on the base by brackets and straps.

Abstract: Apparatus for deforming a sheet of thermoplastic material by sequentially pressing against one face of the hot sheet of material the cold tips of projections set in and extending normally from a first series of separately moveable combs and sequentially pressing against the second face of the material the cold tips of projections set in and extending normally from a second series of separately moveable combs so that the projections in the first series of combs interpenetrate with the projections on the second series of combs in such a manner that the projections of the first series are spaced from the projections of the second series by a distance greater than the thickness of the sheet; the interpenetrated projections are substantially parallel during the act of interpenetration; and the combs of any one series form a block pressing against the sheet of thermoplastic material, wherein the block so formed by the combs of any one series has two straight parallel sides, parallel with the sides of the thermoplas

Abstract: A process of manufacturing a cuspated sheet comprising deforming a sheet of hermoplastic material by pressing against one face of a molten sheet of the material the cold outer tips of a first array of pointed pins set in a first block and simultaneously pressing against the second face of the material the cold outer tips of a second array of projections set in a second block so that the arrays interpenetrate in such a manner that the projections on the second block are spaced from the projections of the first block by a distance greater than the thickness of the sheet and wherein the temperature of the cold outer tips of the arrays is less than the melting point of the thermoplastic material.

Abstract: A laminate comprising a core consisting of a cuspated sheet consisting of a series of hollow projections projecting upwardly and downwardly from the median plane of said sheet and wherein the outer tips of the projections on the ends furthest from the median plane are closed and the ends of the projections in the median plane are open and wherein the projections form a series of pointed cusps said core laminated to a porous sheet wherein the points of the cusps on at least one face have been melted and at least partially allowed to impregnate the porous sheet.

Abstract: The invention provides a process for the preparation of alumina gels possessing a high alumina content, namely from 10% to 16%. The gels are useful in the production of antacid preparations. The gels are prepared by admixing a solid aluminium sulphate with an aqueous solution of a carbonate and bicarbonate, thickening the precipitated gel, washing and thickening the gel again.