Abstract: In accordance with an embodiment, a driving waveform generating device comprises an input module, a setting module, and a generating module. The input module inputs setting data for setting a driving waveform. The setting module sets an order of waveforms constituting the driving waveform based on the setting data for the driving waveform of each gradation. The generating module generates the driving waveform of a desired gradation based on the setting.

Abstract: A first output section outputs a first parameter calculated for each nozzle in a group obtained by dividing the nozzles into groups for each certain number so that density unevenness of ink ejected from each nozzle in the group is corrected. A second output section outputs a second parameter calculated for each group so that change rate of the density unevenness between groups is corrected. A first register circuit divides first parameters for each nozzle in the group and stores the first parameters. A second register circuit divides second parameters for each group and stores the second parameters. A multiplication section sequentially multiplies the first parameters by the second parameters. A conversion section converts a multiplication value to correction data of each nozzle. A setting section sets the correction data in a memory.

Abstract: An inkjet head contains a piezoelectric member which alternately includes plural first grooves and plural second grooves respectively constituted by a pair of side surfaces and a bottom surface; a first electrode on at least one of a pair of the side surfaces of each first groove; a second electrode on the side surface to face the first electrode across the piezoelectric member of each second groove; and a driving circuit including plural first drivers for each first electrode and inputting a common first driving waveform to each first electrode, and plural second drivers for each second electrode and inputting a second driving waveform of each second electrode corresponding to print data to each second electrode.

Abstract: A first output section outputs a first parameter calculated for each nozzle in a group obtained by dividing the nozzles into groups for each certain number so that density unevenness of ink ejected from each nozzle in the group is corrected. A second output section outputs a second parameter calculated for each group so that change rate of the density unevenness between groups is corrected. A first register circuit divides first parameters for each nozzle in the group and stores the first parameters. A second register circuit divides second parameters for each group and stores the second parameters. A multiplication section sequentially multiplies the first parameters by the second parameters. A conversion section converts a multiplication value to correction data of each nozzle. A setting section sets the correction data in a memory.

Abstract: A first output section outputs a first parameter calculated for each nozzle in a group obtained by dividing the nozzles into groups for each certain number so that density unevenness of ink ejected from each nozzle in the group is corrected. A second output section outputs a second parameter calculated for each group so that change rate of the density unevenness between groups is corrected. A first register circuit divides first parameters for each nozzle in the group and stores the first parameters. A second register circuit divides second parameters for each group and stores the second parameters. A multiplication section sequentially multiplies the first parameters by the second parameters. A conversion section converts a multiplication value to correction data of each nozzle. A setting section sets the correction data in a memory.

Abstract: A correction data setting apparatus, which sets correction data in a memory for storing the correction data for correcting a pulse width of a drive pulse signal applied to each actuator corresponding to each nozzle of an inkjet head, comprises a generation section which sequentially generates a channel No. for individually identifying each nozzle; an output section which outputs a parameter required for arithmetic which represents a characteristic of a correction amount with respect to an arrangement direction of the nozzles; an arithmetic section which executes the arithmetic using the parameter output from the output section to calculate the correction amount for each channel No. generated from the generation section; a conversion section converts the correction amount calculated for each channel No. by the arithmetic section to the correction data; and a setting section sets the correction data obtained for each channel No. by the conversion section in the memory.

Abstract: A first output section outputs a first parameter calculated for each nozzle in a group obtained by dividing the nozzles into groups for each certain number so that density unevenness of ink ejected from each nozzle in the group is corrected. A second output section outputs a second parameter calculated for each group so that change rate of the density unevenness between groups is corrected. A first register circuit divides first parameters for each nozzle in the group and stores the first parameters. A second register circuit divides second parameters for each group and stores the second parameters. A multiplication section sequentially multiplies the first parameters by the second parameters. A conversion section converts a multiplication value to correction data of each nozzle. A setting section sets the correction data in a memory.

Abstract: An inkjet head contains a piezoelectric member which alternately includes plural first grooves and plural second grooves respectively constituted by a pair of side surfaces and a bottom surface; a first electrode on at least one of a pair of the side surfaces of each first groove; a second electrode on the side surface to face the first electrode across the piezoelectric member of each second groove; and a driving circuit including plural first drivers for each first electrode and inputting a common first driving waveform to each first electrode, and plural second drivers for each second electrode and inputting a second driving waveform of each second electrode corresponding to print data to each second electrode.

Abstract: According to an embodiment, an ink jet head includes a discharge unit, a first storing unit, a second storing unit, a waveform generating unit, and a voltage applying unit. The discharge unit discharges ink according to the operation of an actuator. The first storing unit stores a pattern of a voltage to be applied to the actuator. The second storing unit stores a plurality of timer sets. The waveform generating unit generates, on the basis of the timer sets stored by the second storing unit and the voltage pattern stored by the first storing unit, a waveform of the voltage to be applied to the actuator. The voltage applying unit applies the voltage to the actuator on the basis of the waveform generated by the waveform generating unit.

Abstract: According to one embodiment, an ink jet head includes a discharge section, a control section that has a first receiving section, a setting section, a second receiving section, and a determination section, and a voltage applying section. The first receiving section receives setting data for setting a command code value corresponding to a command. The setting section sets the command code value with respect to the command based on the setting data received by the first receiving section. The second receiving section receives command data including the command code value. The determination section determines the command indicated by the command code value included in the command data that is received by the second receiving section based on the command code value set by the setting section. The voltage applying section applies a voltage to the actuator based on the command that is determined by the determination section.

Abstract: Provided is a marine hose line and a marine hose. A sinking-resisting device installed on an end portion on a take-up reel side of the marine hose line, includes a sinking-resisting body installed on the outer surface of the marine hose line in a folded-up state, and an expander that expands the folded-up sinking-resisting body. After the end portion of the marine hose line is cut off from the coupling, the expander is activated to expand the folded-up sinking-resisting body, and the drag from the expanded sinking-resisting body in the water prevents the end portion of the marine hose line from sinking.

Abstract: According to an embodiment, an ink jet head includes a discharge unit, a first storing unit, a second storing unit, a waveform generating unit, and a voltage applying unit. The discharge unit discharges ink according to the operation of an actuator. The first storing unit stores a pattern of a voltage to be applied to the actuator. The second storing unit stores a plurality of timer sets. The waveform generating unit generates, on the basis of the timer sets stored by the second storing unit and the voltage pattern stored by the first storing unit, a waveform of the voltage to be applied to the actuator. The voltage applying unit applies the voltage to the actuator on the basis of the waveform generated by the waveform generating unit.

Abstract: When charging an actuator, first, the charging is performed by applying an intermediate voltage lower than a driving voltage which is a target voltage and then charging is performed by applying the driving voltage to the actuator. When discharging the actuator, the discharging is performed by applying the intermediate voltage and then the discharging is performed by applying a zero voltage to the actuator which is charged by the driving voltage. The time for applying the intermediate voltage at a timing of ejecting the ink from the nozzles is shorter than the time for applying the intermediate voltage to the actuator at other timings.

Abstract: According to one embodiment, an ink jet head includes a discharge section, a control section that has a first receiving section, a setting section, a second receiving section, and a determination section, and a voltage applying section. The first receiving section receives setting data for setting a command code value corresponding to a command. The setting section sets the command code value with respect to the command based on the setting data received by the first receiving section. The second receiving section receives command data including the command code value. The determination section determines the command indicated by the command code value included in the command data that is received by the second receiving section based on the command code value set by the setting section. The voltage applying section applies a voltage to the actuator based on the command that is determined by the determination section.

Abstract: Provided are a marine hose and an airbag device for a marine hose. An airbag device includes a water pressure sensor, a folded bag float attached to the outer surface of the marine hose, and an inflation device for introducing air into the bag float. The water pressure sensor activates the inflation device to inflate the folded bag float when the water pressure sensor detects that a preset water pressure value has been reached and the buoyancy provided by the inflated bag float prevents further sinking of the marine hose.

Abstract: According to one embodiment, an ink jet head includes: a plurality of nozzles that eject ink drops; an image storage unit that stores image data; an adjustment storage unit that stores adjustment data which is set for each nozzle in order to uniformly correct variations in ink drops ejected from a plurality of nozzles; and a setting storage unit that stores setting data for changing an adjustment range using the adjustment data. The inkjet head converts the adjustment data into adjustment effective data which is obtained by changing the adjustment range using the adjustment data on the basis of the setting data. The ink jet head generates a driving pulse waveform which is obtained by adjusting a reference pulse waveform of a driving pulse signal by using the adjustment effective data on the basis of the image data for each nozzle.

Abstract: An ink jet head includes an actuator configured to cause ejection of ink, and a driver. The driver is configured to receive serial data including a first command, a second command subsequent thereto, and print data for printing or setting data for setting of the ink jet head that is subsequent to the second command, detect the first command in the serial data, decode the second command, and control the actuator based on the decoded second command.

Abstract: According to one embodiment, an inkjet head includes: a pressure chamber which is filled with an ink; a plate having nozzles communicating with the pressure chamber; an actuator that causes ink drops to be discharged from the nozzles communicating with the pressure chamber by changing a volume in the pressure chamber; and a drive circuit that outputs a drive pulse signal including an expansion pulse which expands the volume of the pressure chamber and a shrinking pulse which shrinks the volume of the pressure chamber to the actuator such that the drive pulse signal is output, in which an electric field applied to the actuator during the time for not discharging the ink drops is lower than an electric field applied to the actuator during the time for discharging the ink drops.

Abstract: There is provided a controller which sets electrodes which are respectively disposed on wall surfaces of a plurality of ink chambers which are arranged in parallel so as to be separated from each other by partitions made of a piezoelectric material, to a high impedance state. In addition, at a timing when an identical potential is applied to the electrodes of at least three ink chambers which are arranged in parallel so as to be separated from each other by mutually adjacent partitions, the controller sets electrodes of ink chambers other than ink chambers located on both sides to a high impedance state.

Abstract: When charging an actuator, first, the charging is performed by applying an intermediate voltage lower than a driving voltage which is a target voltage and then charging is performed by applying the driving voltage to the actuator. When discharging the actuator, the discharging is performed by applying the intermediate voltage and then the discharging is performed by applying a zero voltage to the actuator which is charged by the driving voltage. The time for applying the intermediate voltage at a timing of ejecting the ink from the nozzles is shorter than the time for applying the intermediate voltage to the actuator at other timings.