Abstract: Examples include a fluid ejection die having a die length and a die width. The fluid ejection die may include a plurality of nozzles arranged along the die length and a die width. The plurality of nozzles is arranged such that at least one pair of neighboring nozzles are positioned at different die width positions along the width of the fluid ejection die. The example fluid ejection die further includes a plurality of ejection chambers including a respective ejection chamber fluidically coupled to each respective nozzle. The fluid ejection die further includes an array of fluid feed holes. The array of fluid feed holes includes at least one fluid feed hole fluidically each respective ejection chamber.

Abstract: An example media handling system includes a web media holder with a core hub capable of coupling to a core of a web media roll, a sensor to take a measurement at the circumferential surface of the web media roll, and a controller to determine a length of the web media roll. In that example, the controller may determine the length of the web media roll based on a first distance measurable by the sensor when the core hub is in a first orientation, a second distance measureable by the sensor when the core hub is in a second orientation after a number of rotations with respect to the first orientation of the core hub, and reference value corresponding to the core.

Abstract: A liquid ejecting apparatus includes a transport unit that transports a medium along a transport path, a liquid ejecting head that performs recording on the transported medium by ejecting liquid from a nozzle formed at a nozzle surface, a mounting portion on which a liquid storage portion for storing the liquid supplied to the liquid ejecting head is mounted, and a first discharge port that delivers the medium on which the recording is performed toward a media processing apparatus that performs processing on the medium, in which the mounting portion is disposed at a position higher than the nozzle surface, and a first transport path which is a portion of the transport path from a position corresponding to the liquid ejecting head to the first discharge port passes above the mounting portion.

Abstract: A heating device includes a pre-heater configured to pre-heat a medium, onto which a liquid is discharged from a liquid discharger, at a first position upstream of the liquid discharger in a conveyance direction of the medium, a print-heater configured to heat the medium at a second position opposite the liquid discharger, a post-heater configured to post-heat the medium at a third position downstream of the second position in the conveyance direction, and circuitry configured to control a temperature of each of the pre-heater, the print-heater, and the post-heater. The pre-heater includes a first pre-heater and a second pre-heater disposed closer to the print-heater than the first pre-heater, and the circuitry controls a temperature of the second pre-heater to be between a temperature of the first pre-heater and the temperature of the print-heater.

Abstract: An object is to provide a thermal transfer printer having an inexpensive configuration and capable of making a tension given to an ink ribbon as constant as possible, even when a secular change and an environmental change occur in a DC motor used as a supply motor and a winding motor. A supply motor control unit controls a supply motor of an ink ribbon supply unit. A winding motor control unit controls a winding motor of an ink ribbon winding unit. A remaining amount detection unit detects a remaining amount of an ink ribbon. A variable calculation unit acquires parameters for an armature current, an applied voltage, and a rotational speed of each of the supply motor and the winding motor, and calculates variables to be used for controlling the supply motor and the winding motor on the basis of the acquired parameters.

Abstract: An ink jet method includes causing a treatment liquid to adhere to a recording medium; a white ink to adhere to the recording medium; and a non-white ink to adhere to the recording medium. The treatment liquid, white ink, and non-white ink are applied by main scans of a recording head and sub-scans of the recording medium that intersect the main scans. The recording head includes a first nozzle group arranged in the sub-scanning direction and discharging the treatment liquid, a second nozzle group arranged in the sub-scanning direction and discharging the white ink, and a third nozzle group arranged in the sub-scanning direction and discharging the non-white ink. The second and third nozzle groups have non-overlapping portions in the main scanning direction, and one or both of the second and third nozzle groups have a portion overlapping the first nozzle group in the main scanning direction.

Abstract: A fluid ejector includes a nozzle layer, a body, an actuator and a membrane. The body includes a pumping chamber, a return channel, and a first passage fluidically connecting the pumping chamber to an entrance of the nozzle. A second passage fluidically connects the entrance of the nozzle to the return channel. The actuator is configured to cause fluid to flow out of the pumping chamber such that actuation of the actuator causes fluid to be ejected from the nozzle. The membrane is formed across and partially blocks at least one of the first passage, the second passage or the entrance of the nozzle. The membrane has at least one hole therethrough such that in operation of the fluid ejector fluid flows through the at least one hole in the membrane.

Abstract: A system to transport a medium comprises a medium carrier, a negative pressure device, a vacuum chamber and a flow control device. The medium carrier is to carry the medium on a first side. The negative pressure device is to generate a negative pressure that is below an ambient pressure. The vacuum chamber is disposed on a second side of the medium carrier opposite to the first side and fluidly coupled to the negative pressure device. The flow control device is to manipulate a fluid flow from the vacuum chamber towards the negative pressure device. The flow control device is operated in response to the medium carrier changing its operational state.

Abstract: A printing apparatus includes a feeding roller configured to feed sheets, including at least a preceding sheet and a succeeding sheet, a conveyance roller configured to convey the sheets fed by the feeding roller, and a printing unit configured to print on at least one sheet, of the sheets conveyed by the conveyance roller. A conveyance control unit controls the conveying of the sheets by the conveyance roller to form an overlap state, in which a leading edge of the succeeding sheet overlaps with the preceding sheet. In a case in which the conveyance roller conveys the succeeding sheet to a printing start position at which a printing operation is started by the printing unit, and the conveyance control unit forms the overlap state, the printing unit is configured to print on an overlapping area in which the preceding sheet and the succeeding sheet overlap.

Abstract: Techniques for more accurately and efficiently replicating the alignment of one or more printer components with respect to another printer component are described herein. Replication may be achieved by using a fixture and a connection media to create a near exact replica of features of the fixture, or to temporarily hold multiple printer components in position while a joining layer of the connection media hardens. More specifically, a connection media, such as epoxy, can be used to fill an intentionally-established gap between connecting bodies or components that are held in a predetermined position by the replication fixture. The replication fixture represents a mechanical mounting interface that influences the position of a print head (or an array of print heads) within a printer housing or printing mechanism. Joining printer components in such a manner enables a stable mechanical coupling to be formed that does not require post operations.

Abstract: A print head capable of forming dots on a print medium based on print data and a print medium are caused to perform relative movement in a specified direction, and a speed of the relative movement is set according to the number of dots to be formed in an area of a specified size. Whether to set the speed of the relative movement to a first speed is determined according to the number of dots to be formed in an area of a first size on the print medium. Whether to set the speed of the relative movement to a second speed lower than the first speed is determined according to the number of dots to be formed in an area of a second size which is smaller than the area of the first size in the specified direction.

Abstract: In one example of the disclosure, a first measurement of actual quantity of ink in a target cartridge is taken utilizing a scale. An incremental dosage quantity be deposited into the target cartridge in a dosing pass is determined based upon a desired quantity, the actual quantity, and an undershoot safety factor. A valve is opened to enable a pressure deposit of the incremental dosage quantity of ink to the target cartridge, and then closed. A residue cutter is utilized to scrape the valve and thereby make a scraper deposit of ink to the target cartridge. A second measurement of actual quantity of ink in the target cartridge is taken utilizing the scale. An additional dosage pass is performed if the second measurement is not within an accepted variance of the desired quantity. The making of dosing passes is discontinued if the second measurement is within the accepted variance.

Abstract: Provided is a liquid ejecting apparatus comprising: a cartridge capable of ejecting a liquid stored therein; a flow channel through which the cartridge and a liquid tank capable of supplying the liquid to the cartridge are in fluid communication with each other; a closing unit capable of closing the flow channel; and a movable member configured to be operated before the cartridge and the flow channel are uncoupled. The closing unit comprises a closing member, and closes the flow channel with the closing member moved with movement of the movable member. The liquid ejecting apparatus further comprises a carriage capable of carrying the cartridge and moving during liquid ejection of the cartridge. The movable member is a covering member provided to the carriage and configured to cover the cartridge, and in replacement of the cartridge, the movable member is removed from covering the cartridge to allow access to the cartridge.

Abstract: To perform high-quality printing more appropriately, a printing device that performs printing on a medium includes: an inkjet head as a head for pretreatment agent that ejects a pretreatment agent; inkjet heads as heads for color ink; and an ultraviolet ray irradiation unit as an energy ray irradiation unit. The pretreatment agent is a liquid that contains a solvent and generates heat in response to ultraviolet rays. The ultraviolet ray irradiation unit emits ultraviolet rays to respective positions at which printing is performed on the medium after the inkjet head ejects the pretreatment agent, and evaporates at least part of the solvent in the pretreatment agent.

Abstract: An image forming apparatus includes a transport unit that transports a recording medium along a transport path to a formation area in which an image is formed on the recording medium, an image forming unit that forms the image on the recording medium in the formation area, and a protrusion amount setting unit that sets a protrusion amount of the image protruding from the recording medium to a first protrusion amount in a first case, and sets the protrusion amount to a second protrusion amount larger than the first protrusion amount in a second case where the recording medium is inclined to a transport direction more than the first case.

Abstract: An ink absorber includes: an ink absorbing member that is capable of absorbing ink; an accommodation section that accommodates the ink absorbing member; and a detachment structure section that detaches the ink absorbing member from the accommodation section. In the ink absorber, it is preferable that the accommodation section have a bottom section and side wall sections standing up from the bottom section, that inclined surfaces inclined relative to the bottom section be formed inside the side wall sections, and that the detachment structure section be configured with the inclined surfaces.

Abstract: A fluid ejection die includes a plurality of nozzles to eject fluid drops and a plurality of strain gauge sensors to sense strain. Each strain gauge sensor corresponds to a nozzle and passes the sensed strain to a controller to determine the health of the nozzle based on the sensed strain.

Abstract: Examples disclosed herein relate to an imaging device. Examples include a method for increasing the temperature of the imaging device by determining an internal temperature of the imaging device; determining if a start-up routine is to be initiated; pausing the start-up routine if the internal temperature is below a threshold temperature; and energizing at least one of a fan or heating element of the imaging device when the internal temperature is below the threshold temperature.

Abstract: An image forming apparatus includes a container guide and a latch mechanism. The latch mechanism includes a pin and a pin supporting member. The latch mechanism permits an attachment of the ink container to the container guide when the ink container is pushed in an attachment direction and the pin is stored in a first storage part and permits a detachment of the ink container from the container guide when the ink container attached to the container guide is pushed in the attachment direction and the pin is removed from the first storage part. The pin supporting member includes a boss. The boss is stored in a second storage part when the pin is stored in the first storage part, and the boss is removed from the second storage part when the pin is removed from the first storage part.

Abstract: An ink printing process employs per-nozzle droplet volume measurement and processing software that plans droplet combinations to reach specific aggregate ink fills per target region, guaranteeing compliance with minimum and maximum ink fills set by specification. In various embodiments, different droplet combinations are produced through different printhead/substrate scan offsets, offsets between printheads, the use of different nozzle drive waveforms, and/or other techniques. These combinations can be based on repeated, rapid droplet measurements that develop understandings for each nozzle of means and spreads for expected droplet volume, velocity and trajectory, with combinations of droplets being planned based on these statistical parameters. Optionally, random fill variation can be introduced so as to mitigate Mura effects in a finished display device. The disclosed techniques have many possible applications.