Abstract: A fluid ejection device includes a fluid slot, a fluid ejection chamber communicated with the fluid slot, a drop ejecting element within the fluid ejection chamber, a fluid circulation channel communicated at one end with the fluid slot and communicated at another end with the fluid ejection chamber, a fluid circulating element within the fluid circulation channel, and a channel wall separating the fluid ejection chamber and the fluid circulation channel. The fluid circulation channel includes a channel loop, and a width of the channel wall is based on a width of the channel loop and a width of the fluid ejection chamber.

Abstract: A cutting portion (cutting device) includes a fixed blade that extends in an intersecting direction (X axis direction) intersected with a transport direction transporting a roll paper, and a round blade that cuts the roll paper by relatively moving in the intersecting direction (X axis direction) with respect to the fixed blade in a state of being abutted on the fixed blade, in which the fixed blade extends over a portion of a range where the round blade relatively moves, and the round blade is in a separation state of being separated from the fixed blade in the transport direction when entering a region facing the fixed blade (cutting operation region) from a region not facing the fixed blade (standby region).

Abstract: A method of manufacturing a fluid flow structure may include coupling a flex circuit to a carrier. The flex circuit may include at least one conductor. The method may include coupling an orifice side of a fluidic die to the carrier at an opening on the carrier. The fluidic die may include at least one electrical terminal. The method may include coupling the electrical terminal to the conductor, and overmolding the fluid flow structure with a moldable material. The overmolded fluid flow structure may include a channel molded therein, and the channel may be fluidically coupled to the fluidic die. The conductor may be surrounded by the moldable material.

Abstract: A valve for connecting a second-flow-channel, which supplies a liquid to a liquid-ejecting-head, with a first-flow-channel of the liquid-ejecting-head which ejects the liquid, includes a valve-casing, a first-connector that detachably connects the first-flow-channel, a second-connector that connects the second-flow-channel, a first-connection-port that communicates with the first-flow-channel which is connected with the first-connector, a second-connector that communicates with the second-flow-channel which is connected with the second-connector, and a valve-body in which a connecting-flow-channel is formed for connecting the first-connection-port and the second-connection-port, and that is moved inside the valve-casing to switch a connection state between the first-connection-port and the second-connection-port among a plurality of states.

Abstract: A print section sensor for detecting registration marks on a transfer ribbon in a ribbon feed path includes a reflective sensor configured to detect the registration marks and a transmissive sensor configured to detect the registration marks. The reflective sensor is located upstream of the transmissive sensor relative to a feed direction of the transfer ribbon.

Abstract: A suspended inkjet printing system includes: a pair of support beams extending across a media path; a mounting frame mounted between the support beams, a print head chassis mounted on the mounting frame, the print head chassis being actuable between at least a printing position and a maintenance position; and a plurality of print heads mounted on the print head chassis, each print head extending across the media path and spaced apart along the media path in a direction of media propagation. A plurality of projections extend from the print head chassis into engagement with the mounting frame, the projections controlling a height of the print head chassis relative to the media path.

Abstract: A method and apparatus for compensating and calibrating a bio-impedance measurement device are provided. In the method and apparatus, a memory stores a plurality of compensation parameters and a first detection channel receives a first detection signal, compensates the first detection signal using a first compensation parameter of the plurality of compensation parameters. In the method and apparatus, a second detection channel receives a second detection signal and a third detection signal and compensates the second and third detection signals using second and third compensation parameters of the plurality of compensation parameters and the compensated first detection signal. The impedance measurement device generates a first output signal representative of a first impedance measurement and a second output signal representative of a second impedance measurement based on the compensated first, second and third detection signals.

Abstract: There is provided a printing apparatus including a print head that has a color nozzle row for applying ink to a roll paper and a working liquid nozzle row, a main scanning unit that relatively moves the print head with respect to the roll paper in the main scanning direction (X-axis direction), a sub-scanning unit that relatively moves the roll paper in the sub-scanning direction (Y-axis direction) intersecting the main scanning direction (X-axis direction) with respect to the print head, and a control device that controls a relative position between a use area of the nozzle included in the color nozzle row in the sub-scanning direction (Y-axis direction) and a use area of the nozzle included in a working liquid nozzle row, based on the attribute information of the roll paper.

Abstract: According to the invention, there is provided an ink set which contains at least one ink selected from a group of a black pigment ink, a self-dispersing color pigment ink, and a resin-dispersion color pigment ink. The moisture quantity of the black pigment ink is from 68 mass % to 75 mass %. The moisture quantity of the self-dispersing color pigment ink is from 62 mass % to 72 mass %. The moisture quantity of the resin-dispersion color pigment ink is from 68 mass % to 75 mass %.

Abstract: A controlling unit causes a valve and a pump to perform the following operations: (i) the controlling unit closes the valve and drives the pump in initial filling of an inkjet head with ink; (ii) the controlling unit stops the pump and opens the valve on or after a time point when a tip of ink within an ink route reaches a prescribed position, which is higher than that of the ink cartridge and on an inkjet head side viewed from a joining joint part; (iii) the controlling unit closes the valve after the ink within the ink route flows backward to move air in a direct route into the ink cartridge; and (iv) the controlling unit drives the pump to fill the inkjet head with ink.

Abstract: An algorithm for identifying a motor type of a multi-phase (typically 3-phase) motor is described. The algorithm applies a series of active voltage vector pulses to the phases of the motor and measures the current rise-time for each applied voltage vector. The motor type is determined on the basis of the measured current rise-times.

Abstract: An object is to provide a liquid ejection apparatus that allows suppression of a fluctuation in a pressure of a liquid in a flow path caused by a liquid delivery unit, enabling the liquid to be stably ejected through an ejection port. The liquid ejection apparatus including a liquid ejection head having an ejection port through which a liquid is ejected, a flow path configured to communicate with the ejection port, and a liquid delivery unit configured to feed the liquid to the flow path. A relation between an angular frequency ? of the liquid delivered from the liquid delivery unit, a coefficient of kinematic viscosity ? of the liquid, and an equal diameter a of at least a part of a section of an extra-head flow path in a direction normal to a direction in which ink flows satisfies ?(?/2?)×a>1.

Abstract: A controlling unit performs the following operations: (i) the controlling unit drives a pump with a direct valve closed and an air compression valve opened in initial filling of an inkjet head with ink; (ii) the controlling unit closes the air compression valve when a tip of ink introduced in an ink route reaches a prescribed position between a joining joint part and the air compression valve; (iii) the controlling unit stops the pump and opens the direct valve after closing the air compression valve; (iv) the controlling unit closes the direct valve and opens the air compression valve after the ink, which flows backward due to restoration of compressed air between the air compression valve and the ink, moves air in a direct route into the ink cartridge; and (v) the controlling unit drives the pump to fill the inkjet head with ink.

Abstract: A liquid discharge apparatus includes a case receiving a cartridge having a first chamber, a tank having a second chamber, a head, and a controller to: calculate outflow amount Qa flowed from the second chamber for a time period ?t based on discharge amount Dh; calculate outflow amount Qc flowed from the first chamber toward the second chamber for the time period ?t based on the outflow amount Qa and flow path resistances; read liquid amounts Vc and Vs of the first and second chambers from a memory; subtract the outflow amount Qc from the read liquid amount Vc to calculate new liquid amount Vc; subtract the outflow amount Qa from the read liquid amount Vs and add the outflow amount Qc to calculate new liquid amount Vs; and store the calculated liquid amounts Vc and Vs in the memory.

Abstract: A liquid discharge apparatus includes a case receiving a cartridge, a tank, a head, and a controller to: when the cartridge is installed in the case, calculate an outflow amount Qc based on heights Hc, Hs and flow path resistances; read the amounts Vc, Vs from a memory; subtract the outflow amount Qc from the read liquid amount Vc to calculate new liquid amount Vc; add the outflow amount Qc to the read liquid amount Vs to calculate new liquid amount Vs; store the calculated liquid amounts Vc, Vs in the memory; after a time period from at the time the calculated liquid amounts Vc, Vs stored elapses, again calculate the outflow amount Qc and the liquid amounts Vc, Vs and store the calculated liquid amounts Vc, Vs in the memory.

Abstract: The invention describes a laser printing system (100) for illuminating an object (70) in a working plane (80). The object (70) moves relative to a print head (50) of the laser printing system (100). The print head (50) comprises a total number of laser modules (150), each laser module (150) comprises at least one laser array (110) of lasers (115). At least two of the laser modules (150) share an electrical power supply (20). The laser printing system (100) further comprises a controller (10) being adapted such that at maximum processing speed of the print head (50) only a predefined number of laser modules (150) can be driven at nominal electrical power, wherein the predefined number of laser modules (150) is smaller than the total number of laser modules. The invention further relates to a corresponding method of laser printing.

Abstract: A printer according to an embodiment includes: a printer body including a supplying part that rotatably holds a roll-shaped sheet member; an opening and closing cover configured to open and close with respect to the printer body; a thermal head disposed on the printer body, the thermal head configured to print on the sheet member; a platen roller disposed on the opening and closing cover, the platen roller positioned at a location opposite to the thermal head and feeding the sheet member in a closed configuration; and a platen roller holding mechanism configured to attachably and detachably secure the platen roller to the opening and closing cover. The platen roller holding mechanism includes a label roll supporter that rotatably guides the roll-shaped sheet member in the supplying part. The label roll supporter includes a cross-sectional arc-shaped surface.

Abstract: Provided is a reaction solution containing any one or more kinds of organic solvents from esters, alkylene glycol ethers, cyclic esters, and alkoxyalkyl amides; and an aggregating agent which aggregates components of an ink composition, in which the reaction solution is used for a recording method performed by using the ink composition.

Abstract: An electronic water meter capable of implementing precision metering. The electronic water meter comprises a machine frame, multiple counter units, and multiple shielding plates. The counter units comprise numerical character wheels, magnets, magnetic angular displacement sensors, and digital circuits. The magnetic angular displacement sensors are electrically connected to the digital circuits, sense components of magnetic fields at respective positions thereof on the basis of angular position changes of magnetic field vectors of the counter units, and transmit a corresponding electric signal to the digital circuits. The digital circuits perform a calculation processing on the basis of the electrical signal outputted by the magnetic angular displacement sensors and output a digital signal corresponding to the angular positions of the numerical character wheels.

Abstract: A corrugated fiberboard printing device includes a protection device which regulates approaching of a corrugated fiberboard within a predetermined distance against an inkjet head, and a controller. The protection device includes multiple regulation devices which are juxtaposed in a width direction of the corrugated fiberboard, and a movement mechanism which moves each of the multiple regulation devices in the width direction. The controller includes a specific column setting unit which is set to classify a specific column, in which a printing quality is less influenced even when the specific column is regulated by the regulation device, with respect to the corrugated fiberboard in a sheet width direction based on order information, and a movement mechanism control unit which controls the operation of the movement mechanism and moves each of the regulation devices so as to regulate the corrugated fiberboard in the specific column.