Abstract: A method for measuring the volume of liquid, such as ink or solvent, remaining in a container, such as a replacement cartridge for a continuous ink jet printer, uses a reservoir enclosing an internal space having a variable volume for storage. The reservoir is adapted to provide a reduction in the pressure of the internal space, the reduction substantially monotonically increasing in magnitude as liquid is drawn into the printer, such that the volume of liquid remaining may be calculated from knowledge of the minimum withdrawal pressure required to draw further liquid from the reservoir into the printer. Containers for use with the method have a liquid dispensing port adapted to allow liquid to be dispensed when a withdrawal pressure at the exterior of the port is less than the pressure of the internal space and adapted to prevent the ingress of air into the internal space of the reservoir as liquid is dispensed.

Abstract: Provided is a liquid ejection head comprising: an ejection opening row along a first direction; a pressure chamber with print-element; a passage communicating with the pressure chamber; a supply opening row along the first direction with supply openings extending in a second direction to supply liquid to the passage; a collection opening row along the first direction with collection openings extending in the second direction to collect a liquid from the passage; a first common supply passage along the first direction to supply a liquid to the supply opening row; a first common collection passage along the first direction to collect a liquid from the collection opening row; a first supply side communication opening extending in the second direction to supply a liquid to the first common supply passage; and a first collection side communication opening extending in the second direction to collect a liquid from the first common collection passage, wherein at least one of the first supply side communication openi

Abstract: An overvoltage is prevented from being applied to a circuit. A full-bridge circuit is provided with a first switch having an output terminal connected to one end of a capacitive load, and switching output to the output terminal between a power supply and a ground, a second switch having an output terminal connected to the other end of the capacitive load, and switching output to the output terminal between the power supply and the ground, a first waveform generation section adapted to output a drive waveform for driving the first switch, a second waveform generation section adapted to output a drive waveform for driving the second switch, a detection section adapted to detect voltages of the drive waveforms output by the first waveform generation section and the second waveform generation section, and a control section adapted to control the output of either of the switches based on the voltages detected by the detection section.

Abstract: A print element substrate and a printing device which can suppress lowering of an image quality are provided. For that purpose, a heater, a sub-heater, and a driver are arranged in each heating area, and a plurality of the heating areas is arrayed on the print element substrate.

Abstract: A printing apparatus according to the present invention includes a plurality of ejection heads for ejecting liquid and a plurality of mist collection units configured to collect mist generated by the ejection heads that are disposed along a medium conveyance direction. The plurality of mist collection units include a first mist collection unit. The first mist collection unit is provided to be inclined to the upstream side of a medium conveyance direction with regard to a perpendicular line perpendicular to a floor. The first mist collection unit has a liquid retention part disposed at the upstream side than an ink mist suction hole.

Abstract: A recording apparatus performs recording on a recording medium by using a tray having a plurality of slots, and includes a reception unit receiving information for specifying a detection position of the recording medium in a slot of the tray from an external apparatus, and a specification unit to specify the detection position. In addition, a control unit controls the recording apparatus so that, in a case where the recording medium is arranged in a first slot and no recording medium is arranged in a second slot, recording processing is performed on the recording medium arranged in the first slot, and recording processing is not performed in association with the second slot. Detection processing to detect a recording medium is not performed for a third slot which is not specified, and detection processing is performed for the first and second slots which are specified.

Abstract: To provide a printing apparatus and a method for determining a service life of a cleaning mechanism, capable of more accurately determining a service life of a cleaning mechanism. For the purpose, a service life of a recovery unit is determined by multiplication of a number of times a blade wipes a face surface by a coefficient different depending on a quantity of liquid adhering to the face surface.

Abstract: A printer includes: a media support defining a media feed path; and a pagewide printing unit for printing onto media fed along the media feed path. The printing unit includes: a maintenance chassis fixedly positioned over the media feed path, the maintenance chassis having a maintenance module fixedly mounted thereto; a print bar chassis movably mounted on the maintenance chassis, the print bar chassis including a print module having a printhead; and a lift mechanism for raising and lowering the print bar chassis relative to the maintenance chassis between a maintenance position a printing position. The printhead extends and retracts through a space defined by the maintenance module in the printing and maintenance positions, respectively.

Abstract: A printing system includes a print module with printheads covering a printing width in x-direction, and a substrate holder for supporting a substrate. The substrate and print module are movable relative to each other in y-direction. Each printhead is positioned spaced at a first distance from the substrate holder in z-direction. A detection mechanism is provided for detecting obstructions on the substrate holder. A control unit is provided for stopping further relative movement in the y-direction between the substrate and the print module when an obstruction has been detected. The detection mechanism includes individually movable sub-detection elements that together cover the printing width, where those elements are designed to have a detection signal send out to the control unit when one of the elements gets moved out of a starting position by an obstruction trying to pass it.

Abstract: Provided is a liquid ejection head comprising: an ejection opening row along a first direction; a pressure chamber with print-element; a passage communicating with the pressure chamber; a supply opening row along the first direction with supply openings extending in a second direction to supply liquid to the passage; a collection opening row along the first direction with collection openings extending in the second direction to collect a liquid from the passage; a first common supply passage along the first direction to supply a liquid to the supply opening row; a first common collection passage along the first direction to collect a liquid from the collection opening row; a first supply side communication opening extending in the second direction to supply a liquid to the first common supply passage; and a first collection side communication opening extending in the second direction to collect a liquid from the first common collection passage, wherein at least one of the first supply side communication openi

Abstract: A liquid discharge head includes a head body, a cover, a rib, and a sealer. The head body discharges liquid. The head body includes a frame. The cover is mounted on the frame of the head body. The rib is disposed at the frame along a peripheral surface of the cover. The sealer is disposed between the peripheral surface of the cover and a peripheral surface of the rib.

Abstract: A method for marking references on a flat article includes providing a model having at least a through-opening and exhibiting the same peripheral profile as a flat article to be marked; detecting the peripheral profile of the model and storing that profile in a memory; detecting a profile of the through-opening and the relative positioning with respect to a reference system; detecting a peripheral profile of the flat article; replicating the peripheral profile of the model so as to superpose it on the peripheral profile of the flat article; replicating also the profile of the through-opening of the detected model, taking account of the relative positioning with respect to the reference system and of the positioning of the peripheral profile of the model with respect to the peripheral profile of the flat article. Contactless marking of at least a reference on the flat article is made at the profile of the through-opening which has been replicated.

Abstract: A printing process for printing an ink pattern on a substrate is provided. The ink pattern to be printed is based on an available pattern layout. The pattern layout defines a desired layout of the ink pattern to be printed. Based on the pattern layout an input image for allocating dot positions of the ink pattern is generated. The printing process includes a step of comparing a scan image with the input image to carry out a quality inspection to detect any print defects in the printed ink pattern. The printing process includes a step of providing a decision on an approval or a rejection of the printed ink pattern. In case of an approval, the substrate can be supplied to a subsequent processing station to finalise the substrate. In case of a rejection, the substrate including print defects can be recycled.

Abstract: Provided is a liquid supply apparatus and a liquid ejection apparatus according to which liquid injected through a liquid injection portion can be supplied stably. The liquid supply apparatus includes: a liquid containing chamber capable of containing a liquid to be supplied to a liquid ejection portion; an air chamber in communication with the atmosphere; a communication path that allows an air introduction port for introducing air into the liquid containing chamber and an air chamber to be in communication, and a liquid injection portion through which the liquid can be injected into the liquid containing chamber. The liquid containing chamber is fixed such that the air introduction port is located at a bottom portion of the liquid containing chamber. The volume of the communication path is smaller than the volume of the air chamber. The uppermost portion of the communication path is located above the uppermost portion of the liquid containing chamber.

Abstract: A tray includes a holding portion configured to hold a print medium in a predetermined holding area and an ink absorption portion positioned adjacent to the holding area.

Abstract: There are provided an ink jet printing apparatus and a color conversion processing device that can prevent the generation of offset and blocking and can stably jet ink. A first LUT in which a total amount of ink after conversion is large overall and a second LUT in which a total amount of ink after conversion is small overall are prepared as a look-up table (LUT) that is used in color conversion processing. A LUT to be used is selected according to the number of printed mediums. The first LUT is selected in a case in which the number of printed mediums is smaller than a threshold value, and the second LUT is selected in a case in which the number of printed mediums is equal to or larger than a threshold value.

Abstract: An inkjet printing apparatus includes: a print bar unit including an inkjet head configured to eject ink to a web being conveyed; and a guide configured to guide movement of the print bar unit in a print bar movement direction intersecting a conveyance direction of the web between a first position, a second position, and a third position. The first position is a position where the print bar unit performs printing on the web. The second position and third position are located on one and the other sides of the first position in the print bar movement direction.

Abstract: An inkjet printhead prints test patches of magnetic ink having magnetic particles using different ink droplet sizes on print media. A sensor scans the test patches to determine test patch densities. A processor determines a table-based density that produces a user-selected magnetic strength by applying the selected magnetic strength to a density and magnetic strength relationship table. The processor identifies a matching test patch as one of the test patches having a density that most closely matches the table-based density, identifies a selected droplet size as the ink droplet size used to print the matching test patch, and controls the printhead to produce magnetic ink droplets of the selected droplet size when printing a print job for the selected magnetic strength.

Abstract: In one example, a carriage to carry a printhead back and forth over a print substrate includes an inboard part to hold the printhead and an outboard part to inhibit the flow of air under the carriage when the carriage is moving back and forth over the print substrate.

Abstract: There is provided a printing apparatus including: a driving roller which drives a recording medium in a predetermined direction by rotation thereof; a supporting member which supports the recording medium further on the downstream side in the predetermined direction than the driving roller; a discharge head which is provided to oppose the supporting member and discharges liquid to the recording medium supported by the supporting member; a tension control portion which adjusts tension of the recording medium supported by the supporting member by controlling tension of the recording medium based on a result of detecting tension of the recording medium further on the downstream side in the predetermined direction than the driving roller; and a first destaticizing portion which destaticizes the recording medium further on the upstream side in the predetermined direction than the driving roller.