Abstract: In one embodiment, an ink cartridge comprises an outer housing that defines an interior space adapted to contain ink and an air vent adapted to enable air to pass into and out of the interior space and a dividing wall provided within the interior space, the dividing wall separating the interior space into a first chamber and a second chamber, the dividing wall defining a passage through which air within the first chamber can pass into the second chamber and out of the cartridge through the air vent when the air within the first chamber expands.

Abstract: An ink for ink jet including a coloring material; and a water-soluble organic solvent. The coloring material contains a compound represented by the following general formula (I). The water-soluble organic solvent contains a compound represented by the following general formula (II) and a linear both-terminal alkanediol having 4 to 6 carbon atoms. The content A (mass %) of the compound represented by the following general formula (II) based on the total mass of the ink is 4.0-12.0 mass %, and the mass ratio (A/B) of the content A (mass %) to the content B (mass %) of the alkanediol based on the total mass of the ink is 2.5-4.

Abstract: A liquid ejecting head is provided with a suction port capable of avoiding the return of mists, which have already been sucked through a suction port, back to the suction port. In view of this, the inner diameter of a suction tube for allowing liquid mists taken in through the suction port to pass is designed such that a meniscus is formed before a liquid droplet adhering to the inside of the suction tube grows enough to move toward the suction port.

Abstract: A printing apparatus measures spectral intensity of a printed medium before an image is printed thereon, and calculates Mahalanobis distances with respect to plural types of reference printing media stored in advance. Then, the type of the printed medium is determined from the reference printing media based on the Mahalanobis distances and the image is printed thereon.

Abstract: An inkjet printing apparatus is selectively composed of a plurality of transportation units, i.e., an inlet unit, a first intermediate unit, a second intermediate unit, and an outlet unit, having a transport path with slopes in side view of a transportation direction from a paper feeder to a take-up roller. When the transportation units are connected, a connecting part of the transportation unit is an inclination change point VP of the transport path. This achieves maintained tension to the print medium. As above, the inkjet printing apparatus may be selectively composed of a plurality of transportation units. Accordingly, the inkjet printing apparatus is constructible by combination of the units for various type productions, leading to a suppressed stock.

Abstract: A liquid storage container includes a liquid storage portion configured and arranged to store liquid, and a liquid supply portion having a liquid supply flow path provided to supply the liquid in the liquid storage portion to a liquid ejecting apparatus. The liquid storage container further includes a filter unit arranged inside of the liquid storage portion and connected to the liquid supply portion. The filter unit has a first opening connecting to the liquid supply flow path, a second opening connecting to an interior of the liquid storage portion, a connection flow path connecting the first opening and the second opening, a filter chamber arranged in the connection flow path with a filter being installed in the filter chamber, and a low pressure chamber connecting to the interior of the liquid storage portion at a different position from the connection flow path and having pressure lower than atmospheric pressure.

Abstract: Disclosed herein is an ink jet recording method, including: scanning a recording medium with an ink jet head and simultaneously discharging an ultraviolet-curable ink composition for ink jet recording from the ink jet head to adhere the ink composition to the recording medium; irradiating the ultraviolet-curable ink composition for ink jet recording adhered to the recording medium with ultraviolet rays two times or more; and wiping a nozzle of the ink jet head, from which the ultraviolet-curable ink composition for ink jet recording has been discharged, using a nozzle wiping member.

Abstract: A recording apparatus includes a support unit that is capable of supporting a target recording medium, a recording unit that is capable of recording on a target recording medium that is supported by the support unit, and a plurality of adjustment units that adjust an interval between the support unit and the recording unit.

Abstract: A liquid ejecting apparatus includes a liquid ejecting head and that includes nozzle openings through which liquid is ejected. A positioning abutting unit is arranged on an outer side of a region in which a plurality of the nozzle openings are formed. A cap main body is arranged so as to relatively move with respect to the liquid ejecting head. The cap main body has a side wall. A sealing member is accommodated inside the cap main body, comes into contact with the positioning abutting unit in a state of surrounding the region due to the relative movement of the liquid ejecting head and the cap main body, and forms a sealed space inside of the cap main body.

Abstract: There is provided a liquid discharging apparatus including: a low voltage system circuit block including a modulation portion which generates a modulation signal pulse-modulated from a source signal; a high voltage system circuit block including a gate driver which generates an amplification control signal based on the modulation signal; a transistor which generates an amplification modulation signal amplified from the modulation signal based on the amplification control signal; a low pass filter which demodulates the amplification modulation signal and generates a driving signal; and a piezoelectric element which is displaced as the driving signal is applied, in which the low voltage system circuit block and the high voltage system circuit block are formed on the same semiconductor substrate, in which the semiconductor substrate has one substrate potential supply terminal to which a substrate potential of the semiconductor substrate is supplied.

Abstract: The system and methods described maintain composite color print integrity of an inoperative ink-jet. The methods may include a computing device and a printer to obtain the print job and reconstruct a pixel bitmap. The methods may also include a sensor configured to generate output signals associated with the individual ink-jets located in the print-head to indicate inoperative ink-jets and help compensate for those ink-jets.

Abstract: An image recording device includes a maintenance mechanism that conducts maintenance of recording head and a maintenance mechanism control unit that makes the maintenance mechanism conduct the maintenance at termination or start of one of process-target jobs for which cumulative number of sheets of the media that received printing processes by the recording head after immediately previous maintenance will reach lower limit of the cumulative number of sheets, which represents earliest start timing of the maintenance, and will not reach an upper limit of the cumulative number of sheets, which represents latest start timing of the maintenance, during printing process, and makes the maintenance mechanism conduct the maintenance before start of printing of a process-target job when priority on image quality, which requires high quality printing, is set in the process-target job and the cumulative number of sheets reaches the lower limit during a printing process of the process-target job.

Abstract: A liquid ejection head includes a recording element substrate that ejects liquid, and an element-substrate support member to which the recording element substrate is bonded with an adhesive. A groove to be filled with the adhesive is provided in a bonding region of the element-substrate support member, at which the element-substrate support member and the recording element substrate are bonded together, along a part or an entirety of the outer circumference of the recording element substrate.

Abstract: A sheet processing apparatus includes a trimming section, a container, a detector and a control section. The trimming section performs trimming to trim a sheet or sheet set. The container collects a chip produced by the trimming in the trimming section. The detector detects a presence of the chip at a predetermined height. The control section makes the trimming section perform the trimming of a next sheet or sheet set when the detector detects the chip. Then, the control section determines that a top of piled chips in the container has reached the predetermined height when the detector still detects the presence of the chip after the trimming of the next sheet or sheet set.

Abstract: A control apparatus and method for image processing input data comprises a data analysis section that analyzes the input data and outputs a printing command and a first set of image data; a data memory section that stores the printing command from the data analysis section via a program memory bus and stores the first set of image data from the data analysis section via a data memory bus; a color conversion process section that performs color conversion processing on the first set of image data on the basis of the printing command; and a halftone process section that performs halftone processing on a second set of image data resulting from the color conversion processing on the first set of image data, on the basis of the printing command.

Abstract: Disclosed is an inkjet printing apparatus with an inkjet printing unit performing printing onto web paper to be transported. The apparatus includes a drive roller transporting the web paper, a transportation velocity detector detecting a transportation velocity of the web paper, an encoder generating a timing reference signal of the printing by the printing unit in accordance with transportation of the web paper, the encoder being disposed in a transport roller, a printing correction data generator generating printing correction data in accordance with the transportation velocity and the timing reference signal so as to correspond to a time-dependent variation of the transport roller provided with the encoder; and an offset corrector correcting the printing of the inkjet printing unit to the web paper in accordance with the printing correction data.

Abstract: An apparatus detects inoperative inkjets during printing of three-dimensional objects. The apparatus includes an optical sensor with a predetermined focal plane. The optical sensor is moved to a position that enables the sensor to generate image data of material drops ejected by a group of inkjets in a single row of a printhead. These image data are analyzed to detect inoperative inkjets to enable printhead maintenance at appropriate times to maintain the operational status of the inkjets in the printhead. The optical sensor is moved along a length and width of the printhead to enable the sensor to generate image data of all the inkjets that eject material from the printhead.

Abstract: A method of driving a hybrid inkjet printing apparatus includes applying an electrostatic voltage to ink contained in a nozzle, applying a waveform voltage to ink contained in the nozzle, the waveform voltage being applied by a piezoelectric driving device, and applying an ejection voltage so as to eject the ink.

Abstract: An image forming apparatus includes at least one recording head, at least one head holder, a carriage, a reference member, a sub-reference member, and an adjuster. The at least one recording head includes a plurality of nozzles to discharge droplets. The at least one head holder holds the at least one recording head. The carriage holds the at least one head holder and movable in a main scanning direction. The reference member is provided at the carriage and arranged along the main scanning direction. The sub-reference member is provided at the carriage in separation from the reference member. The adjuster adjusts parallelism of the sub-reference member to the reference member. The at least one head holder is supported by and detachable from the reference member, positioned in contact with the sub-reference member, and held in the carriage.

Abstract: An ink transfer element for a printing apparatus, the ink transfer element comprising a surface for transferring ink applied thereto to at least one further ink transfer element, wherein the surface is configured to, when an ink comprising pigment particles and a liquid vehicle is applied to the surface, at least partly separate the liquid vehicle from the pigment particles, through the surface. The ink transfer element further relates to printing apparatus and a method of printing.