Abstract: A liquid discharge head includes: multiple pressure chambers respectively communicating with multiple nozzles from each of which a liquid is discharged; a diaphragm defining a part of a wall of the multiple pressure chambers; an electromechanical conversion element attached to the diaphragm, the electromechanical conversion element configured to deform the diaphragm to discharge the liquid in the multiple pressure chambers through the multiple nozzles in a discharge direction; a damper film having a first surface and a second surface opposite to the first surface; a channel substrate including: a common chamber communicating with each of the multiple pressure chambers; and a first bonding portion bonded to the first surface of the damper film; and a damper substrate including a second bonding portion bonded to the second surface of the damper film.

Abstract: A three-dimensional object printing apparatus includes a head that discharges a liquid to a three-dimensional workpiece, and a robot that includes an arm and a base portion coupled to one end of the arm, and changes relative positions of the workpiece and the head. The arm includes a plurality of joints and a tip portion that is the other end of the arm and supports the head, a first printing operation in which the robot moves a position of the head while the liquid is discharged from the head is executed, and the head moves away from the base portion during the execution of the first printing operation.

Abstract: A scanner include a scan section configured to intermittently move and perform an intermittent scan, a stop-state analyzing section configured to compare a stop-time image obtained by a scan of an identification pattern on a medium in a stop position where the movement of the scan section temporarily stops and scan results before and after the stop and determine, based on a comparison result, whether the medium moved, and a scan control section configured to cause the scan section to suspend the temporarily-stopped intermittent scan when the medium moved and cause the scan section to continue the temporarily-stopped intermittent scan when the medium did not move.

Abstract: A printing apparatus includes an ejection head including a first nozzle row configured to eject, toward a recording medium, a first liquid containing a photopolymerization initiator and a second nozzle row configured to eject, toward the recording medium, a second liquid containing the polymerizable compound and a color material and not containing the photopolymerization initiator, a driving unit configured to change relative positions of the ejection head and the recording medium, and an irradiation unit configured to irradiate, with the light, the recording medium onto which the first liquid and the second liquid are deposited. The first liquid and the second liquid are ejected from the ejection head so that the second liquid overlaps the first liquid on a surface of the recording medium. A distance between the irradiation unit and the first nozzle row is longer than a distance between the irradiation unit and the second nozzle row.

Abstract: A recording apparatus includes a head unit including a recording head and configured to move between a recording position where recording is performed on a medium and a retraction position away from a medium transportation path; a movement mechanism that moves the head unit; and a positioning portion configured to position the head unit at the recording position. A moment for rotating the head unit is produced by a force applied by the movement mechanism to the head unit and by a reaction force received by the head unit from the positioning portion. A unit pusher configured to apply, to the head unit, a force acting in a direction of canceling rotation of the head unit when the head unit is located at the recording position pushes the head unit in a direction intersecting with a moving direction of the head unit.

Abstract: A method for marking a tire having a tread and two sidewalls delimiting the tread, by inflating the tire mounted on a rim, and when in the inflated state, making, on at least one of the sidewalls, at least one marking which is at least partially colored, wherein during the inflation, the tire is inflated to a pressure greater than the nominal inflation pressure of the tire.

Abstract: A liquid jetting apparatus includes: a casing; a tank configured to store liquid and having a first side wall and a second side wall which face each other, a rear wall, an inlet, and a connecting portion; a conveying mechanism configured to convey a recording medium along a conveying path extending in a first direction; a carriage configured to move in a second direction in which the first side wall and the second side wall face each other so as to define a movement area having a range in the second direction, the range of the movement area having first and second ends spaced apart in the second direction; a tube connected to the connecting portion; and a head mounted on the carriage and having a nozzle configured to jet the liquid onto the recording medium conveyed by the conveying mechanism.

Abstract: A transfer apparatus includes a first linear transfer part which moves a slider in a first direction by using a first fixed linear module fixed on a first base; a module moving part which moves a module holding member holding a movable linear module in a second direction different from the first direction, to position the movable linear module at a first coupling position to couple with the first fixed linear module and cause the slider to transfer between the movable and first fixed linear modules; a linear scale having a scale extending in the second direction and a sensor which detects the scale; and a controller which acquires first module position information indicating a position of the movable linear module relative to the first fixed linear module in the second direction and controls movement of the module holding member based on the first module position information.

Abstract: A printing apparatus includes a carriage mounted with a printing unit configured to perform printing on a print medium, a first motor used to move the carriage, a second motor used together with the first motor to move the carriage, and a control unit configured to control the first motor and the second motor. When moving the carriage, the control unit controls the first motor with a first control amount and controls the second motor with a second control amount. The first control amount and the second control amount are different from each other, and a ratio therebetween is a predetermined ratio.

Abstract: A digital printing press for printing security documents is provided.

Abstract: A printing apparatus includes an image formation unit, a tray on which a medium is placed, a movement unit, and a control unit. The image formation unit includes a first head forming a first image and a second head forming a second image. The movement unit is provided so as to be capable of moving the tray to a first position at which the medium is placed and a second position serving as a reference position. The control unit switches between a first mode and a second mode. In the first mode, a starting position is moved to an image forming region, and the tray is not moved to the second position, and a movement direction is changed to form the first image and the second image. In the second mode, after the first image is formed, the tray is moved to the second position, and then the movement direction is changed to form the second image.

Abstract: A switching mechanism includes a first rotating body that performs forward rotation and reverse rotation by receiving a driving force transmitted from a driving source; and a second rotating body having convex portions provided on an outer circumference at intervals. The first rotating body has an engagement portion configured to move along the outer circumference of the second rotating body. When the first rotating body rotates in a forward direction, engagement of the engagement portion with the convex portion causes rotation of the second rotating body in the forward direction together with the first rotating body. When the first rotating body rotates in a reverse direction, the engagement portion moves along the outer circumference of the second rotating body so that the second rotating body does not rotate in the reverse direction. A first interval, which is at least one of the intervals, is larger than other intervals.

Abstract: A 3D printer includes a nozzle configured to jet a drop of liquid metal therethrough. The 3D printer also includes a light source configured to illuminate the drop with a pulse of light. A duration of the pulse of light is from about 0.0001 seconds to about 0.1 seconds. The 3D printer also includes a camera configured to capture an image, video, or both of the drop. The 3D printer also includes a computing system configured to detect the drop in the image, the video, or both. The computing system is also configured to characterize the drop after the drop is detected. Characterizing the drop includes determining a size of the drop, a location of the drop, or both in the image, the video, or both.

Abstract: A method includes illuminating a drop with a pulse of light from a light source. A duration of the pulse of light is from about 0.0001 seconds to about 0.1 seconds. The method also includes capturing an image, video, or both of the drop. The method also includes detecting the drop in the image, the video, or both. The method also includes characterizing the drop after the drop is detected. Characterizing the drop includes determining a size of the drop, a location of the drop, or both in the image, the video, or both.

Abstract: Aspects of the technology relate to lateral propulsion systems in lighter-than-air (LTA) platforms configured to operate in the stratosphere. One or more motor assemblies are used to actuate the lateral propulsion system and to make directional changes, for instance using one or more propellers. This can include a pointing axis motor assembly for orienting the lateral propulsion system along a particular heading, and a drive motor assembly for causing a propeller assembly or other propulsion mechanism to turn on and off Corrective actions may be necessary to adjust the alignment of the lateral propulsion system. A stepper motor control module may be used to control operation of the pointing axis motor assembly, for instance by causing it to rotate in a clockwise (or counterclockwise) direction. A motor current control approach may be used, in which the motor voltage is adjusted until a measured motor current reaches a selected current level.

Abstract: A main frame extending in a first direction, a side frames extending in a second direction that intersects with the first direction, the side frames being fixed to the main frame, and a supported member extending in the first direction and supported by the side frame are included, wherein the side frame includes a first frame portion extending in the second direction and a second frame portion extending from the first frame portion in the first direction, the second frame portion being in surface contact with the main frame, and in plan view from the second direction, an abutting portion that abuts the main frame is provided at the first frame portion and a fixing portion is provided at the second frame portion, the fixing portion being fixed to the main frame at a position where the second frame portion overlaps with the first frame portion.

Abstract: A liquid discharge apparatus includes a tube configured to connect a liquid discharge unit and a liquid container, a protective member configured to protect the tube, and a holder configured to hold the protective member. The holder holds the protective member by a first projection of the holder being inserted into a first opening in the protective member, such that a portion of the first projection protrudes from the first opening, and, in a state where the protective member is attached to the holder, a length of the portion of the first projection in a first direction in which a short side of the first opening extends is greater than that of the first opening in the first direction, and the length of the portion of the first projection in the first direction is less than that of the first opening, in the second direction crossing to the first direction.

Abstract: Provided is a three-dimensional object printing apparatus, in which a printing operation for a workpiece includes: a first pass in which liquid is ejected toward a first region of the workpiece; a second pass in which the liquid is ejected toward a second region that partially overlaps the first region of the workpiece; a third pass in which the liquid is ejected toward a third region of the workpiece; a fourth pass in which the liquid is ejected toward a fourth region that partially overlaps the third region of the workpiece, the curvature of a surface including the first region and the second region is larger than the curvature of a surface including the third region and the fourth region, and an overlapping width between the first region and the second region is smaller than an overlapping width between the third region and the fourth region.

Abstract: A single pass inkjet printer that utilizes a modular printing system with one or more self-contained printing modules, where each printing module is easy to remove and replace from a large printing machine, thus resulting in an overall system that is easy to service and maintain Each module is a self-contained printer including an ink supply, printhead drive electronics, and printhead assembly in order to provide one color or fluid of inkjet printing capability. Each module includes a precise three-point compliant self-aligning mount system to obtain accurate printhead positioning, and a unique integrated printhead tending system that includes a compact movable vacuum knife for cleaning the printheads, and a printhead capping station for sealing and protecting the printheads from the ambient environment when not in use.

Abstract: A liquid ejecting device includes a head configured to eject liquid, a holding unit holding the head, a base unit holding the holding unit, a guide unit movably holding the base unit, the guide unit being configured to guide the base unit, and a detection unit attached to the base unit, the detection unit being configured to detect vibration of the base unit, in which the base unit includes a first surface and a second surface opposite to the first surface, the guide unit is attached to the first surface, and the detection unit is attached to at least one of the first surface and the second surface.

Abstract: A liquid discharge apparatus includes a liquid discharge unit, a position detector, and circuitry. The liquid discharge unit has a liquid discharge port and discharges a liquid from the liquid discharge port toward an object. The position detector detects a position of the liquid discharge unit relative to the object. The circuitry calculates a movement trajectory of the liquid discharge unit based on the position of the liquid discharge unit detected by the position detector. Further, the circuitry performs a first operation of causing the liquid discharge unit to move along the movement trajectory without discharging the liquid and performs a second operation of causing the liquid discharge unit to move along the movement trajectory while discharging the liquid to the object after the first operation.

Abstract: A printing module includes a first imaging device and a slot for accommodating an optional second imaging device. An ink supply module includes a slot for accommodating an optional drying/fixation apparatus, and a second ink supply device. Also, the ink supply module and the printing module include ink inlet/outlet ports such that the optional second imaging device in the printing module, if present, can be supplied ink from the second ink supply in the ink supply module when the printing module and the ink supply module are combined to form a printer.

Abstract: A method for controlling a polyphase actuator includes supplying each phase with a periodically varying voltage having a periodic sequence of steps Pi that have a constant duration and an amplitude An,i, where n corresponds to the rank of the phase and i to the rank of the step. The method further includes determining a target position PCi of a rotor of the actuator, in order to define a sinusoidal voltage envelope. The actuator further includes a movable member, a stator equipped with electrical coils and a sensor detecting the mechanical position of the movable member with respect to the stator, as well as a microcontroller. The microcontroller determines, at times Tcapteur, a mechanical position of a mechanical member, the microcontroller calculates, at each of the times Tcapteur, a difference between the mechanical position and a target position PCi corresponding to the step Pi and the microcontroller calculates a coefficient k as a function of the difference.

Abstract: Embodiments of the invention provide a technique that effects spot gloss or gloss control and/or variations on one image without requiring clear inks. This is preferably accomplished by use of a multilayer printing process in which an image is first printed using a first set of color print heads and then cured, and in which the image is again printed using a second set of color print head, but where the image remains uncured for a predetermined interval to allow the ink drops applied to the media to spread and thus introduce a gloss effect.

Abstract: A three-dimensional printing system includes a build plate, a carriage, a housing assembly covering the carriage, and a printhead. The build plate includes a lateral print area having a length along an X-axis and a width along a Y-axis. The carriage has a major axis along the Y-axis that spans the width of the lateral print area. The printhead is mechanically, fluidically, and electrically coupled to the carriage. The printhead includes a printhead housing that cooperates with the housing assembly to separate a print zone containing the lateral print area from connected internal components of the printhead and the carriage. The carriage is configured to scan along the X-axis and the printhead is configured to scan along the Y-axis supported by the carriage to address the entire lateral print area.

Abstract: A fluid dispensing system, an imprint lithography system with a fluid dispensing system, a method of manufacturing an article with the fluid dispensing system. The fluid dispensing system comprising: a fluid dispenser and a heater. The fluid dispenser configured to dispense droplets of a fluid onto a substrate. The heater configured to maintain droplet temperature at greater than 23° C. Each of the droplets has a fluid volume that is less than 1.2 pL. The fluid dispenser is configured to have a drop placement accuracy for the imprint resist fluid that is less than a first threshold when the droplet fluid temperature is greater than 23° C. The drop placement accuracy is greater than the first threshold when the droplet fluid temperature is less than or equal to 23° C.

Abstract: A recording head unit includes a first line head and a second line head in which nozzles are provided in an X-axis direction. The first line head is arranged on one side of the second line head in a Y-axis direction intersecting the X-axis direction. The first line head includes a first windbreak member. The second line head includes a second windbreak member. A length by which the first windbreak member protrudes is smaller than a length by which the second windbreak member protrudes.

Abstract: A movement mechanism for a movable body including a motor including a rotation shaft, a supporting member that supports the motor, an attachment member fixed to a base body portion and to which the supporting member is attached, a driving pulley coupled to the rotation shaft, a driven pulley attached to the base body portion, an endless belt stretched between the driving pulley and the driven pulley, and the movable body attached to the endless belt, in which the supporting member is configured to be pivotally movable about a position serving as a pivotal axis such that a distance between the driving pulley and the driven pulley shortens, the position being at a side of the driven pulley from the driving pulley in a stretching direction in which the endless belt is stretched between the driving pulley and the driven pulley.

Abstract: An apparatus detects movement of a target object, estimates a control quantity for first feedback control for the target object at a first period, based on a detection signal, and estimates a first state quantity of the target object and a second state quantity obtained by time differentiation of the first state quantity in order to perform second feedback control for the target object at a second period shorter than the first period, based on the detection signal. The apparatus generates a first operation quantity for the first feedback control, based on the estimated control quantity, generates a second operation quantity for the second feedback control, based on the estimated first and second state quantities, and determines an output value, based on a result of comparing the second operation quantity with a maximum value of the first operation quantity.

Abstract: The plurality of first nozzles and the plurality of second nozzles are arranged such that a distance between nozzles adjacent to each other in a first direction is a first distance, the support body is provided with a first fixing portion for fixing the first head unit onto the support body and a second fixing portion for fixing the second head unit onto the support body, and a distance between the first fixing portion and the second fixing portion in the first direction is a second distance that is different from an integral multiple of the first distance.

Abstract: An alignment of jet holes of a liquid jet head is smoothly performed. A liquid jet head according to an embodiment of the present disclosure includes a nozzle section having a jet hole for liquid, a support member configured to support the nozzle section, and a position adjustment mechanism configured to adjust a position of the jet hole with respect to a carriage. The position adjustment mechanism includes a reference member a position of which with respect to the carriage is fixable, a position adjustment member which is coupled to the support member, and is configured to push the reference member to change a relative distance with respect to the reference member to thereby displace the support member on the carriage, and an intermediary member intervening between the reference member and the position adjustment member.

Abstract: A carriage moving mechanism including a driving unit including a driving pulley, a driving motor, and a first support member for supporting both the driving pulley and the driving motor, a driven unit including a driven pulley and a second support member for supporting the driven pulley, and a third support member supporting both the driving unit and the driven unit, an annular belt that is wound around both the driving pulley and the driven pulley, a first outer peripheral surface and a second outer peripheral surface facing to the first outer peripheral surface, and a first carriage that is attached to the first outer peripheral surface, wherein the second support member, the third support member, and the first support member are aligned in this order in a first axis, and the third support member is disposed inside the annular belt.

Abstract: An example three-dimensional printing system includes a first carriage, a second carriage, and a synchronization controller. The synchronization controller is coupled to the first carriage and the second carriage to synchronize movements of the first carriage and the second carriage. The synchronization controller is to avoid interference between the first carriage and the second carriage.

Abstract: A liquid jet head and a liquid jet recording device capable of reducing the installation area of the liquid jet head are provided. The liquid jet head according to an embodiment of the present disclosure is to be installed in a carriage of the liquid jet recording device. The liquid jet head includes a jet section provided with a nozzle hole configured to jet liquid, a support member configured to support the jet section, and provided with a hole part including a through hole penetrating in a jet direction of the liquid, a biasing member disposed in the hole part, and configured to bias the support member toward the carriage, and a biased member which is disposed at a predetermined position with respect to the carriage, and is biased in the hole part by the biasing member to thereby set a position of the nozzle hole with respect to the carriage.

Abstract: A recording apparatus includes a recording unit and a document reading unit. The recording unit includes a shaft, and the document reading unit includes a groove forming member. In the groove, an elastically deformable portion configured to make the width of the groove narrower than a maximum diameter of the shaft The shaft has a shape in which a radial dimension changes along a circumferential direction and is provided so as to rotate, and when the elastically deformable portion passes through the shaft in the process of opening the document reading unit from the closed state, the rotation of the shaft is regulated such that the radial dimension of the shaft with respect to the width of the groove is equal to or less than a first dimension smaller than the maximum dimension.

Abstract: A recording-head position adjustment mechanism adjusts a position of a recording head. The recording-head position adjustment mechanism includes a first support, a second support, and an adjuster. The first support supports a first end of the recording head in a longitudinal direction of the recording head. The second support supports a second end of the recording head in the longitudinal direction. The adjuster moves the second support with respect to the first support in a transverse direction intersecting the longitudinal direction to adjust an inclination of the recording head.

Abstract: A liquid droplet discharging apparatus includes a transfer device, a discharging head, a first medium supply, a second medium supply and an imaging device. The transfer device is configured to transfer a work along a transfer direction. The discharging head is configured to discharge a liquid droplet of a functional liquid to the work. The first medium supply is configured to supply a first inspection medium, which receives the liquid droplet, in a direction orthogonal to the transfer direction. The second medium supply is configured to supply a second inspection medium, which receives the liquid droplet and is arranged side by side with respect to the first inspection medium in the transfer direction, in the direction orthogonal to the transfer direction. The imaging device is configured to image the liquid droplet discharged to the first inspection medium and the liquid droplet discharged to the second inspection medium.

Abstract: When receiving a sheet size measurement instruction through a user interface, an information processing apparatus transmits a width measurement instruction to a printer through a communication I/F. When receiving a measurement result of a sheet width from the printer, a controller extracts sheet information that meets the received measurement result and displays the extracted sheet information for user selection. When a user selection is received, the controller updates a print setting with selected sheet information. When a user selection is not received, the controller transmits a type-designated measurement instruction designating the sheet type. When the measurement result is received, the controller updates the print setting with a sheet length information included in the received measurement result.

Abstract: A medium transport device includes a first roller that applies a transporting force to a medium, a second roller that applies a transporting force to the medium transported from the first roller, a third roller that applies a transporting force to the medium transported from the second roller, a first rotor that transmits rotational torque to the third roller, a first shaft that is provided away from the first rotor at a first interval, and a second shaft that is provided away from the first rotor at the first interval and at a position different from a position of the first shaft. A shaft center of the first shaft and a shaft center of the second shaft are positioned on a circular arc, the center of which is a rotation center of the second roller.

Abstract: Provided are a printing jig for an inkjet-type printer and a method for manufacturing printed objects therewith, which jig can be easily produced in accordance with the shape and size of an object to be printed and allows the object to be accurately positioned relative to the printer. The printing jig supports an object to be printed, and is placed in an inkjet-type printer when the object is being printed. The printing jig includes a mounting surface on which the object is to be placed, and a positioning part for positioning the object. The positioning part includes a protrusion preformed on the mounting surface so as to be brought into contact with at least part of the object placed on the mounting surface. The protrusion is made of deposited and cured ink used by the inkjet-type printer.

Abstract: The disclosed embodiments relate to a wide format single pass printing apparatus. The printing apparatus can include multiple print housings configured to receive print beams with print heads configured to print onto a substrate. The print housings can be horizontally adjacent to one another relative to a horizontal plane. The print housings can also be oriented opposite to one another. The print beams can be inserted and/or removed from each print housing from opposing ends, allowing for greater ease of access to the print beams.

Abstract: In an image forming apparatus, a carriage mounts a recording head for discharging droplets, and moves in a main scan direction. A guide member slidably guides the carriage. An encoder scale is arranged along the main scan direction. An encoder sensor reads the encoder scale. The carriage includes a head mounting part for mounting the recording head, and a sensor attaching part for attaching the encoder sensor. The sensor attaching part is provided so as to be extended from the head mounting part. The encoder scale is arranged at a location which the encoder sensor can read. A partition member is provided to separate the head mounting part from the sensor attaching part in the carriage. The head mounting part is arranged in a first space, and the sensor attaching part and the encoder scale are arranged in a second space separated from the first apace by the partition member.

Abstract: An apparatus for processing a substrate may include a stage on which a substrate is placed, an ink jet head assembly for discharging chemical liquid onto the substrate, and a gantry for holding the ink jet head assembly over the substrate on the stage. The ink jet head assembly may include an ink jet head for discharging the chemical liquid onto the substrate, a supporting member for holding the ink jet head, a fixing member being combined with supporting member to fix the supporting member to the fixing member, a protruding member disposed on the fixing member, and a receiving member provided in the supporting member to receive the protruding member.

Abstract: A liquid ejection head including a recording element substrate that ejects a liquid, a flow passage member provided with a flow passage that supplies the liquid to the recording element substrate, an elastic member having elasticity disposed between the recording element substrate and the flow passage member, and a fixing member that fixes the recording element substrate and the flow passage member. In the liquid ejection head, an area between the recording element substrate and the flow passage member through which the liquid flows is sealed by having the elastic member be deformed with the fixing member.

Abstract: An image forming apparatus includes a conveyer belt that transports sheets, a platen plate that supports the conveyer belt to be slidable, a head holding unit that holds inkjet heads ejecting ink to sheets transported on the conveyer belt and being arrayed in a direction orthogonal to a transport direction of the conveyer belt, and a pair of gap adjustment units that have ends on one side being respectively attached to both ends of a lower surface of the head holding unit and ends on the other side being attached to an upper surface of the platen plate to adjust a gap between the lower surface of the head holding unit and the upper surface of the platen plate.

Abstract: A modular 3D printer system can include a base subsystem and multiple exchangeable components. The base subsystem can have a 3D motion module, a printhead module and a platform module. The multiple exchangeable components can include printheads having different configurations and functionalities, which can be exchangeably installed in the printhead module. The multiple exchangeable components can include platform supports having different configurations and functionalities, which can be exchangeably installed in the platform module.

Abstract: A repeatable manufacturing process uses a printer to deposits liquid for each product carried by a substrate to form respective thin films. The liquid is dried, cured or otherwise processed to form from the liquid a permanent layer of each respective product. To perform printing, each newly-introduced substrate is roughly mechanically aligned, with an optical system detecting sub-millimeter misalignment, and with software correcting for misalignment. Rendering of adjusted data is performed such that nozzles are variously assigned dependent on misalignment to deposit droplets in a regulated manner, to ensure precise deposition of liquid for each given area of the substrate. For example, applied to the manufacture of flat panel displays, software ensures that exactly the right amount of liquid is deposited for each “pixel” of the display, to minimize likelihood of visible discrepancies in the resultant display.

Abstract: A slide member slides in conjunction with reciprocation of a carriage. The slide member slides between a first position and a second position to cause a switch gear to move between a plurality of slide positions at which the switch gear engages respective ones of a plurality of transmission gears. The slide member at the second position is closer to a first end of a shaft than the slide member at the first position is. A first cover covers a first sliding contact portion of the shaft over an entire range of the first sliding contact portion in a main scanning direction. The slide member is in sliding contact with the first sliding contact portion when the slide member slides between the first position and the second position. The first sliding contact portion is closer to the first end than the slide member located at the first position is.

Abstract: Printhead carriers and adapters are disclosed. An example disclosed print mechanism includes an adapter to simultaneously couple a printhead assembly to both a logic circuit of a media processing device and a power source of the media processing device; a printhead carrier coupled to the adapter; and wherein a first connection, between data input connector and the logic circuit, and a second connection, between the power input connector and the power source, are maintained when the printhead assembly is removed from the print mechanism.

Abstract: A control portion sets, as a head line of test mask data, such a read pixel line of a plurality of read pixel lines of read data obtained by a reading portion by performing reading, the plurality of read pixel lines being orthogonal to the sheet conveyance direction, as is located at a position upstream of a read pixel line of the plurality of read pixel lines as is read at a time when a detection portion detects a leading end of the sheet, by a number of lines calculated by adding an initial number of offset lines to a reference number of lines, and sets, as a non mask region, a sheet read region of the test mask data, and replaces, with white pixels, pixels outside such a region of test image data as corresponds to the non mask region.