Abstract: An automatic dual pump assembly for a pumped refrigerant cooling system including a refrigerant reservoir for receiving a refrigerant fluid includes a first pump having a first pump inlet and a first pump outlet, a first variable frequency drive coupled to the first pump, a second pump having a second pump inlet and a second pump outlet, a second variable frequency drive coupled to the second pump, and a three-way valve having an input arm fluidly coupled to the refrigerant reservoir, a first outlet arm fluidly coupled to the first pump inlet, and a second outlet arm coupled to the second pump inlet. The first pump outlet and the second pump outlet are coupled to a refrigerant supply line, and the three-way valve selectively controls flow of the refrigerant fluid to one or both of the first pump and the second pump.

Abstract: Set of devices adapted to form a local network (3), the set comprising at least one first communication device (1) and multiple second communication devices (2), wherein the first and the second communication devices comprise a short-range communication module (4) to communicate in the local network (3) via a hopping mechanism, and wherein the first communication device additionally comprises a long-distance communication module (5) to communicate with a remote server (6), wherein each one of the second communication devices (2) comprises a memory adapted to store a hopping distance to the first communication device wherein the second communication device is configured to execute actions based on said hopping distance in said power cutoff mode.

Abstract: An economizer module for increasing energy efficiency of a pumped refrigerant cooling system is connected to a refrigerant pumping unit including a primary pump connected with heat extractor(s) via a primary circuit and a primary heat exchanger connected with a condensing unit via a secondary circuit. The economizer module includes a control panel with control software, a secondary heat exchanger connected with the heat extractor(s) via the primary circuit and with the primary heat exchanger, a cooler connected with the secondary heat exchanger via an economizer circuit, and a secondary pump connected between the cooler and the secondary heat exchanger. The control panel executes the control software to control fluid flow in the economizer circuit via the secondary pump so as to use ambient air to reject heat from working fluid being used to collect heat from refrigerant in said primary circuit before said heat travels to said secondary circuit.

Abstract: Example embodiments relate to rotating coordinators in mesh networks. One example mesh network includes multiple communication devices adapted to communicate in the mesh network according to a predetermined protocol. A single one of the multiple communication devices adopts a coordinator role in the mesh network for governing a commissioning procedure in the mesh network. The mesh network is configured to rotate the coordinator role among at least a selected number of the multiple communication devices so that a new communication device is detectable in the vicinity of the device adopting the coordinator role.

Abstract: Embodiments of a system and method are disclosed for providing a renewable energy network optimization tool. A method for optimizing a renewable energy network determines an initial configuration state, populates a pool of candidate sites for placement of renewable-energy generating units a hybrid simulated annealing-genetic algorithm, constructs a plurality of candidate renewable energy generation networks from the pool of candidate sites using random selection, evaluates the candidate renewable energy generation networks using scoring metrics, ranks the evaluated candidate renewable energy generation networks with respect to each other and prior iteration candidate renewable energy generation networks, adds candidate sites from a top ranked candidate renewable energy generation network to a list of candidate sites to be kept repeats the above until a final best candidate renewable energy generation network of kept sites is determined.

Abstract: A printhead includes a nozzle plate including a plurality of nozzles and a manifold body bonded to the nozzle plate. The manifold body includes a liquid channel in fluid communication with the plurality of nozzles. A cavity that dampens pressure modulation in liquid channel of the manifold body is located between the nozzle plate and the manifold body. The cavity is fluidically common to the plurality of nozzles.

Abstract: A method of printing an image with a continuous inkjet printer system employing bimodal drop size generation with pigmented inkjet ink compositions comprising a polymer additive, wherein the liquid ink is an aqueous inkjet ink comprises dispersed pigment colorant particles having a mean particle size of less than 150 nanometers and at least about 0.1 wt % of polymer additive distinct from any polymer dispersant used to disperse the pigment particles, and recirculating liquid ink supplied to the nozzle if the printer system from a liquid ink source is in-line filtered with a filter selected to be effective at retaining particles having particle sizes equal to and greater than 0.6 micrometers from the liquid ink and to pass the dispersed pigment particles. The invention enables high quality drop control in a continuous inkjet printing system.

Abstract: A method for providing drop placement adjustment of drops deposited on a print media by a printhead in a continuous inkjet printer, the method comprising the steps of providing the printhead with a drop generator having at least one nozzle; moving the printhead relative to the print media; causing the printhead to form drops from the at least one nozzle with a drop formation period being the time between consecutive drop formations; wherein a portion of the formed drops are allowed to strike pixel locations on the print media for forming print drops, while other drops are directed toward a catcher and do not strike the print media for forming catch drops; creating a series of the print drops to print on a series of consecutive pixel locations; and adjusting a velocity of a portion of the formed print drops relative to a velocity of other print drops to adjust the placement of the print drop within the pixel locations.

Abstract: A method for operating a jetting module includes applying to a drop forming mechanism a sequence of drop formation waveforms in which a small-drop waveform applied after another identical small-drop waveform causes a small drop of volume Vs to be formed; applying a large-drop waveform after another identical large-drop waveform causes a large drop of volume VL to be formed, and applying a large-drop waveform adjacent to a small-drop waveform can be done in a way that produces a large drop having a volume VL2, where VL2 is different than VL and a small drop of volume VS2, where VS2 is different than Vs.

Abstract: In a method or device to reduce curling of a printing substrate in a printer, at least one print region of the printing substrate is printed with ink. A moisture level of the printing substrate is increased in at least one unprinted partial region of the printing substrate that is arranged on a same side of the printing substrate as the print region.

Abstract: A method of printing an image with a continuous inkjet printer system employing bimodal drop size generation with pigmented inkjet ink compositions comprising a polymer additive, wherein the liquid ink is an aqueous inkjet ink comprises dispersed pigment colorant particles having a mean particle size of less than 150 nanometers and at least about 0.1 wt % of polymer additive distinct from any polymer dispersant used to disperse the pigment particles, and recirculating liquid ink supplied to the nozzle if the printer system from a liquid ink source is in-line filtered with a filter selected to be effective at retaining particles having particle sizes equal to and greater than 0.6 micrometers from the liquid ink and to pass the dispersed pigment particles. The invention enables high quality drop control in a continuous inkjet printing system.

Abstract: A method for operating a jetting module includes applying to a drop forming mechanism a sequence of drop formation waveforms in which a small-drop waveform applied after another identical small-drop waveform causes a small drop of volume Vs to be formed; applying a large-drop waveform after another identical large-drop waveform causes a large drop of volume VL to be formed, and applying a large-drop waveform adjacent to a small-drop waveform can be done in a way that produces a large drop having a volume VL2, where VL2 is different than VL and a small drop of volume VS2, where VS2 is different than Vs.

Abstract: In a method to remove toner deposits on a surface of a cleaning element, electrically charged toner particles are transferred from a transfer element surface to a photoconductor. On the cleaning element, untransferred, electrically charged toner particles as residual toner from the transfer element surface are received. Electrically charged toner particles on the cleaning element are directed past an electrode arrangement arranged at a distance from the surface of the cleaning element. An alternating electrical field is generated which acts on the toner particles to loosen them. The toner particles remaining on the surface of the cleaning element are brought into contact with a mixture of carrier particles and toner particles during further transport along a transport direction of the cleaning element.

Abstract: The method includes forming first size drops by applying drop forming pulses during a unit time period ?0; forming second size drops by applying drop forming pulses during a second size drop time period, ?m, which is a multiple, m, of the unit time period; forming the corresponding plurality of drop forming energy pulse sequences so as to form non-print drops and print drops; delaying the timing of the drop forming energy pulses sent to the transducers of the second group relative to the drop forming energy pulses sent to the transducers of the first group by a delay time ?L, characterized by ?L being equal to d*?0 where d is 1½ to 9½, when printing at a first speed and ?L is approximately equal to f*?0 times where f is 1½ to 9½, f is greater than d when printing at a speed slower than the first speed.

Abstract: A method for operating a continuous inkjet printer, the method includes forming drops with a drop formation period being the time between consecutive drop formations; creating a portion of the drops that strike the print media for forming print drops; creating a portion of the created drops that do not strike the print media for forming catch drops; creating the print drops to print on a series of consecutive pixel locations; wherein a time between the creation of consecutive print drops is inconsistent which causes an additional catch drop so that a gap is created; wherein when a gap is created, adjusting a velocity of the print drop adjacent to the gap to cause the print drop to shift slightly toward the gap.

Abstract: A method of forming print drops includes forming drops of a first size by applying drop forming energy pulses during a unit time period, ?0; forming drops of a second size by applying drop forming energy pulses during a second drop time period, ?m, wherein the second drop time period is a multiple, m, of the unit time period, ?m=m*?0, m?2; providing timing between drops for printing consecutive pixels is ?i=a*?0 where a is an integer?m; forming non-print drops and print drops according to the liquid pattern data; delaying the timing of the pulses for the drop forming energy pulses sent to the drop forming transducers of group number g relative to the drop forming energy pulses sent to the transducers of a first group by a delay time ?L, where ?L=g*(INT(a/n)+1/n)*?0+?b where g is an integer<n.

Abstract: In a method or device to reduce curling of a printing substrate in a printer, at least one print region of the printing substrate is printed with ink. A moisture level of the printing substrate is increased in at least one unprinted partial region of the printing substrate that is arranged on a same side of the printing substrate as the print region.

Abstract: A method includes forming drops of first size by applying drop-forming pulses during unit time period, ?0; forming drops of second size by applying drop-forming pulses during second size drop time period, ?m, wherein the second sized drop time period is a multiple, m, of the unit time period, ?m=m*?0, and m?2; providing timing between drops for printing consecutive pixels is equal to ?i=a*?0 where a is an integer ?m and is a function of print media speed; forming the corresponding plurality of drop forming pulse sequences so as to form non-print drops and print drops according to the liquid pattern data; delaying the timing of the drop forming pulses sent to the transducers of the second group relative to the drop forming pulses sent to the transducers of the first group by a delay time ?L which is approximately equal to ?i/2.

Abstract: A method for operating a continuous inkjet printer, the method includes forming drops with a drop formation period being the time between consecutive drop formations; creating a portion of the drops that strike the print media for forming print drops; creating a portion of the created drops that do not strike the print media for forming catch drops; creating the print drops to print on a series of consecutive pixel locations; wherein a time between the creation of consecutive print drops is inconsistent which causes an additional catch drop so that a gap is created; wherein when a gap is created, adjusting a velocity of the print drop adjacent to the gap to cause the print drop to shift slightly toward the gap.

Abstract: A method for providing drop placement adjustment of drops deposited on a print media by a printhead in a continuous inkjet printer, the method comprising the steps of providing the printhead with a drop generator having at least one nozzle; moving the printhead relative to the print media; causing the printhead to form drops from the at least one nozzle with a drop formation period being the time between consecutive drop formations; wherein a portion of the formed drops are allowed to strike pixel locations on the print media for forming print drops, while other drops are directed toward a catcher and do not strike the print media for forming catch drops; creating a series of the print drops to print on a series of consecutive pixel locations; and adjusting a velocity of a portion of the formed print drops relative to a velocity of other print drops to adjust the placement of the print drop within the pixel locations.