Abstract: Disclosed is a substrate treating apparatus. The substrate treating apparatus may include a stage including an accommodation area, onto or from which a substrate is loaded or unloaded, and a treatment area, in which the substrate is treated, a liquid discharge head that supplies a treatment liquid to the substrate, and a liquid receiving part that receives the treatment liquid pre-discharged by the liquid discharge head in the treatment area.

Abstract: A recording system includes an ejecting unit, a punch unit, and a control unit. The ejecting unit ejects ink onto a sheet transported by a transport unit to form an image. The punch unit forms a plurality of through holes in the sheet. The control unit controls an ejection amount per unit area of ink in the ejecting unit based on image data. Furthermore, the control unit divides a region into a first region not including the through hole, and a second region including the through hole, and controls an ejection amount of the ink in the ejecting unit such that a second ejection amount per unit area when an image is formed in the second region is less than a first ejection amount per unit area when an image is formed in the first region.

Abstract: A liquid discharging apparatus, having a head with nozzles, a scanning assembly, a conveyer, and a controller, is provided. The controller is configured to determine whether the nozzles are to be flushed in a moving action which accompanies a discharging action, if the controller determines the nozzles are not to be flushed in the moving action, conduct the moving action to move the head at a first acceleration rate; if the controller determines the nozzles are to be flushed in the moving action, determine whether a distance between a flushing range and a discharging range is greater than or equal to a predetermined distance; and if the controller determines the distance is greater than or equal to the predetermined distance, conduct the moving action to move the head at a second acceleration rate and control the head to discharge liquid for flushing the nozzles.

Abstract: The controller of an inkjet recording apparatus supplies a recording medium onto the conveyor belt with a pair of registration rollers based on a detection result of the trailing edge of the recording medium by a first detection sensor and a detection result of an opening by a second detection sensor. The controller determines whether the recording medium is being placed on the conveyor belt coinciding with the opening that is moved due to the traveling of the conveyor belt, and based on the determination result, the controller controls the recording head to execute flushing and the pair of registration rollers to supply a subsequent recording medium onto the conveyor belt.

Abstract: A liquid discharge apparatus is provided, which comprises a conveyor, a support member which supports a medium existing in a conveying passage, a head, a maintenance mechanism which has a wiper, and a wiper cleaner. The maintenance mechanism is opposed to a nozzle surface of the head and movable to a wiping position at which the wiper abuts against the nozzle surface and a cleaning position at which the wiper abuts against the wiper cleaner. The wiper cleaner is disposed at a position at which a part thereof is overlapped with the support member in a direction orthogonal to the nozzle surface under or below the support member.

Abstract: A recording apparatus includes a recording unit, a scanning unit configured to perform relative scanning by moving the recording unit and a recording medium relative to each other at least once with respect to a unit region on the recording medium, a recovery unit configured to perform a recovery operation for maintaining or recovering a recording performance of the recording unit for application of a recording material, and a control unit configured to control the recovery unit, wherein the control unit acquires recording mode information about recording of an image to be performed on a recording medium for (n+1)-th page (n being a natural number) and determines, based on the acquired recording mode information, whether to perform an inter-page recovery operation at timing after recording of an image on a recording medium for n-th page ends and before recording of an image on a recording medium for (n+1)-th page starts.

Abstract: Provided is an inkjet recording apparatus that reduces excessive or insufficient flushing of each of the nozzles by appropriately controlling the ink ejection amount in the next flushing for each nozzle based on the actual ink ejection state of each of the nozzles of a recording head during image formation. A control unit causes the recording head to execute flushing for ejecting the ink at a timing different from a timing that contributes to image formation on the recording medium. A conveyor belt has opening portions for allowing ink ejected from each of the nozzles of the recording head during flushing to pass. The control unit controls the ink ejection amount for each of the nozzles during the next flushing based on an integrated printing rate for each of the nozzles after the recording head has performed the previous flushing.

Abstract: An ink maintenance system for a printer comprising a first tray having a base and a plurality of side walls, the first tray having a first length and an open top along the length and a second tray having a base and a plurality of side walls, the second tray having a second length and an open top along its length. The system also includes a fan and a filter. To use the system, a print head is positioned in a standby or cleaning position within the printer and ink is ejected from one or more print nozzles into an ink maintenance system within the printer such that the ejected ink is collected in at least one of a catch tray or a filter of the ink maintenance system. The system is then removable from the printer for cleaning.

Abstract: A liquid discharge apparatus is provided that includes a discharge unit configured to discharge a liquid onto a medium, a support portion configured to support a portion of the medium, the liquid being discharged from the discharge unit onto the portion of the medium, a housing including therein the discharge unit, a humidity detection unit configured to detect a humidity, and a display control unit configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity less than a lower limit value, and configured to display an indication prompting adjustment of a temperature or humidity when the humidity detection unit detects a humidity exceeding an upper limit value greater than the lower limit value.

Abstract: A liquid discharge apparatus includes a liquid discharge head configured to discharge a liquid onto a medium, a carriage mounting the liquid discharge head configured to move the liquid discharge head in a main scanning direction, a dummy-discharge receptacle to receive a dummy-discharge liquid discharged from the liquid discharge head in a dummy-discharge operation, a light irradiator to irradiate the dummy-discharge liquid in the dummy-discharge receptacle with a light, and circuitry. The circuitry sets a plurality of dummy-discharge areas virtually dividing an interior of the dummy-discharge receptacle, moves the carriage in the main scanning direction to a first dummy-discharge area among the plurality of dummy-discharge areas, drives the liquid discharge head to discharge the dummy-discharge liquid onto the first dummy-discharge area in the dummy-discharge receptacle, and irradiates the dummy-discharge liquid in the first dummy-discharge area in the dummy-discharge receptacle with the light.

Abstract: An inkjet printer is provided. Inclined surfaces of a first protrusion and a second protrusion of a first inkjet head and inclined surfaces of side walls of a head cap abut against each other, but other portions of the first inkjet head do not abut against the head cap. Specifically, the head cap 510 is not abutted against the lower surface 133 of the first inkjet head 130, and is also not abutted against the ejection surfaces 134A and 135A of the first protrusion 134 and the second protrusion 135. In particular, the side walls are formed to a shape so as not to overlap the ejection surfaces when viewed in the vertical direction, whereby the head cap does not abut against the ejection surfaces.

Abstract: An image processing device is communicable with a printer and includes a controller. The printer is configured to repeatedly and alternately execute a partial print and a sub scan to form an image. The image is made up of a plurality of partial images arranged in a sub scanning direction. The partial print forms a target partial image while performing a main scan. The controller is configured to perform: setting; generating; and outputting. The setting sets a printing direction for the partial print to one of first and second directions. The generating generates partial print data for the partial print by executing a color conversion process on target partial image data using a color conversion profile. The color conversion profile is selected from first and second profiles respectively corresponding to the first and second directions. The outputting outputs the partial print data and direction information specifying the printing direction.

Abstract: A transport item moves in a process direction to transport sheets of media. The transport item is positioned between an inkjet printhead and a receptacle. The inkjet printhead has nozzles. The transport item has openings arranged in a pattern, the pattern of the openings is consistent along all of the transport item, and the pattern of the openings in the transport item aligns at least one opening with each of the locations of the nozzles as the transport item moves in the process direction. The nozzles eject ink through the openings to the receptacle when the nozzles are aligned with the openings. When controlling the nozzles to eject ink through the openings to the receptacle, a controller can control the nozzles to simultaneously eject ink on a sheet of media while ejecting ink through the openings to the receptacle.

Abstract: Inkjet head cleaning and storage includes cleaning an orifice plate by inserting a tip of a shaped wiper into a slit of a printing mask, such that one or more shoulders of a handling end of the shaped wiper are in contact with respectively one or more edges of the slit. The shoulders of the shaped wiper facilitate the tip applying a predetermined pressure to an orifice surface during wiping. Preventing sediment buildup during extended periods of non-printing includes placing at least the orifice plate of the printing head in a protecting liquid that avoids evaporation of the volatile liquid from the nozzles. An innovative “night plate” can be used to seal the slit of a printing mask and ink purged from the printing head used to fill a gap between the printing head and the mask, thereby covering at least the orifice plate with purged ink.

Abstract: A fluid ejection device including a plurality of primitives each having a same set of addresses and including a plurality of fluid chambers, each fluid chamber corresponding to a different address of the set of addresses and including a firing mechanism. Input logic receives a series of fire pulse groups, each fire pulse group corresponding to an address of the set of addresses and including warming data having an enable value or a disable value and a series of firing bits, each firing bit corresponding to a different primitive and having a firing value or a non-firing value. For each firing bit of each fire pulse group, when the warming data has the enable value, activation logic provides a warming pulse to the firing mechanism of the fluid chamber corresponding to the firing bit when the firing bit has the non-firing value.

Abstract: An inkjet printing apparatus has an inspection unit that inspects an ejection condition of multiple ejecting ports arrayed in a first direction, a motor that moves the inspection unit in the first direction, a conversion unit that reduces rotation speed obtained from the motor and converts driving force of the motor into movement of the inspection unit and a control unit that controls inspection of the ejection condition, performed by the inspection unit. The control unit controls the inspection of the ejection condition based on detection of a rotary encoder detecting rotation of the motor and a linear encoder detecting a position of the inspection unit.

Abstract: A liquid ejecting apparatus includes a transport belt that transports a medium in a transport direction in a state in which the medium is supported on a medium supporting surface, a liquid ejecting head that ejects a liquid from a plurality of nozzles formed on a nozzle surface with respect to the medium supported on the medium supporting surface of the transport belt, and a controller that performs a flushing operation of ejecting the liquid from the nozzles as a maintenance operation for the liquid ejecting head, on a flushing area on the medium supporting surface adjacent to the medium with an interval therebetween.

Abstract: Examples herein provide a method. The method includes preconditioning a printing apparatus, including: increasing a temperature of an inkjet printhead in a print zone in the printing apparatus to a first temperature higher than or equal to about a steady state printhead temperature; and increasing a temperature of the print zone such that a portion of a print medium disposed over a portion of a platen in the print zone is at a second temperature higher than or equal to about a steady state print zone temperature. The method further includes disposing, using the printhead, an ink at the steady state printhead temperature onto the portion of the print medium to form an image thereon.

Abstract: A cleaning head includes an end face that faces an inkjet print head to be cleaned. A supply opening and a discharge opening are spaced apart on the end face. A supply channel carries cleaning fluid to the supply opening. The discharge opening receives cleaning fluid that is to be conveyed away after having been emitted through the supply opening. The cleaning head emits a cleaning fluid jet through the supply opening with the cleaning fluid jet being emitted in a direction having a component that is directed towards the discharge opening so that the cleaning fluid can be conveyed away by suction through the discharge opening.

Abstract: A liquid ejecting apparatus includes a liquid ejecting unit provided with a nozzle from which liquid is ejected, a liquid supply flow path connected to a liquid supply source and the liquid ejecting unit, and a pump mechanism that includes a pump chamber provided in the liquid supply flow path and that repeats a suction driving operation and a discharge driving operation such that the liquid flows toward the liquid ejecting unit from the liquid supply source. Before maintenance of the liquid ejecting unit is performed by discharging liquid from the nozzle, the pump mechanism performs the suction driving operation until the amount of liquid accommodated in the pump chamber reaches a set value, which is set in advance.

Abstract: A printing apparatus includes a printing head configured to eject a first ink and a second ink, wherein the second ink generates less deposition than the first ink, an ink absorber configured to absorb the ink ejected from the printing head, a detection unit configured to detect a state of the ink absorber through an optical method, and a control unit configured to cause the printing head to eject the second ink to the ink absorber based on a detection result of the detection unit.

Abstract: A printer includes a head that injects a liquid, a cleaning mechanism, a waste liquid path, a waste liquid tank that is detachably attached and collects waste liquid, a displaceable member that is displaced to a first position when the waste liquid tank is attached and is displaced to a second position when the waste liquid tank is detached, a liquid receiving portion that is provided on the displaceable member and is located directly below an outlet of the waste liquid path when the waste liquid tank is not attached, a detection target that is provided on the displaceable member and moves together with the displaceable member, and a sensor that detects the detection target.

Abstract: A print bar assembly includes: a mounting frame having a pair of opposite first and second sidewalls extending parallel to a media feed direction, the first sidewall having an upwardly extending first guide slot defined between opposite first bearing surfaces; a print bar carriage slidably received within the mounting frame and an actuation mechanism operatively connected to the print bar carriage for lifting and lowering the print bar carriage relative to the mounting frame. The print bar carriage includes a chassis, a printhead and a pair of first bearings rotatably received in the first guide slot. During sliding movement of the print bar carriage, the pair of first bearings travel within the first guide slot and bear against the first bearing surfaces to constrain rotational movement of the print bar carriage.

Abstract: A liquid discharge apparatus includes a plurality of pressure chambers that generate a pressure for discharging a liquid, a plurality of nozzles that communicate individually with the pressure chambers and that discharge the liquid, a common liquid chamber that includes a plurality of supply openings and that has, at an end portion side in an arrangement direction of the supply openings, a region in which flow speed of the liquid flowing toward the supply openings is higher than in another region, and a controller that controls a maintenance by expelling the liquid from the nozzles. During the maintenance, the controller controls expelling the liquid from a first nozzle to a second nozzle that is one of nozzles located on the end portion side of the first nozzle in the arrangement direction of the supply openings, in an order of the first nozzle to the second nozzle.

Abstract: A discharger is configured to discharge liquid in a liquid channel to outside the liquid channel. The liquid is at least one of first liquid and second liquid different from the first liquid. An agitator is configured to agitate the liquid in the liquid channel. When executed by a processor, instructions cause the processor to perform: an introducing process of, when the second liquid exists in the liquid channel, controlling the discharger to discharge the second liquid to outside the liquid channel and to introduce the first liquid from the tank into the liquid channel; an agitating process of, after the introducing process, controlling the agitator to agitate the liquid in the liquid channel; and a discharging process of, after the agitating process, controlling the discharger to discharge the liquid in the liquid channel agitated by the agitator to outside the liquid channel.

Abstract: A recording apparatus includes a recording head on which a plurality of nozzle rows are arranged in a width direction that intersects with a transfer direction; and a support section which includes a discarding section which includes a position which faces the nozzle rows and allows ink ejected by the recording head to pass therethrough, and a support surface which is disposed at a position which does not face the nozzle rows and is configured to support the paper sheet, wherein the support surface includes a first support surface which is disposed in a region which faces gaps between the nozzle rows in the width direction and a second support surface which extends in a region longer than a region in which the first support surface is disposed in the width direction, and the first support surface and the second support surface are formed to be flush with each other.

Abstract: A platen includes: a supporting portion that can support a sheet; a suction unit that sucks the sheet in such a manner as to attach the sheet to the supporting portion; a first ink receiver that receives ink ejected downstream of the leading end of the sheet passing the supporting portion; and a second ink receiver that receives ink ejected upstream of the trailing end of the sheet passing the supporting portion.

Abstract: A recording apparatus includes a supporting portion that supports a sheet of paper transported and a recording head fixedly disposed at a position opposing the supporting portion, for recording. The recording head has nozzle rows for ejecting ink, and the nozzle rows are arranged side by side in the recording head in a direction intersecting a transport direction of the sheet. The supporting portion has a dumping portion including a position opposite the nozzle rows of the recording head, and the dumping portion is capable of receiving the ink ejected from the nozzle rows when the recording head performs flushing. The supporting portion has a supporting surface capable of supporting the sheet at a position not opposite the nozzle rows of the recording head. A slope inclining relative to the supporting surface is disposed in at least part of the boundary region between the dumping portion and the supporting surface.

Abstract: An ink delivery device is described. The ink delivery device includes an ink die with a first surface. The ink delivery device also includes an overmold to encapsulate a number of surfaces of the ink die. The overmold has a second surface that is wider than the first surface. The second surface receives an adhesive to attach the ink delivery device to a printhead. The ink delivery device also includes an ink slot passing through the overmold and at least a portion of the ink die.

Abstract: A recording apparatus includes a discharge section configured to discharge an ink from a nozzle onto a medium, a common flow path configured to supply a liquid to the nozzle, an ink supply path configured to supply the ink to the common flow path, filling liquid supply paths configured to supply a filling liquid to the common flow path, an air release path configured to release air in the common flow path, and a switching between section configured to switch the opening and closing of the ink supply path, the filling liquid supply paths, and the air release path.

Abstract: A printing control method for a printing apparatus that includes a controller, such that the controller: sets a plurality of first regions along a first direction on a print medium that is conveyed, and a plurality of second regions between two first regions of the plurality of first regions, on the basis of print data; and causes ink to be discharged from a print head to the plurality of first regions so as to print on the basis of the print data and also causes ink to be discharged from the print head to the second region determined on the basis of an indicator value for predicting poor discharging of ink in the print head.

Abstract: A liquid-consuming apparatus includes: a tank including a liquid storage chamber configured to store a liquid, an inlet through which the liquid is poured into the liquid storage chamber, and a liquid flow channel configured to let the liquid flow therethrough from the liquid storage chamber; a cap configured to be attachable to the tank to cover the inlet; a cover configured to be movable relative to the tank between a closed position where a surface, of the tank, in which the inlet is formed is covered and an open position where the surface of the tank is exposed; and a holder configured to hold the cap removed from the tank. The cover is prevented from moving to the closed position by the cap held by the holder to be positioned in a movement area of the cover moving from the open position to the closed position.

Abstract: An ink-jet printer, including: an ink-jet head; and a head moving device for moving the head in a scanning direction, wherein the ink-jet head includes a first head unit having a first nozzle row from which first ink is ejected and a second nozzle row from which second ink that differs in color from the first ink is ejected, a second head unit disposed so as to be shifted from the first head unit in a nozzle arrangement direction by a distance less than a nozzle pitch, and a third head unit disposed between the first and second head units in the scanning direction so as to be shifted from the first head unit in the nozzle arrangement direction by a distance corresponding to a predetermined natural number multiple of the nozzle pitch, the third head unit having fifth and sixth nozzle rows from which the first ink is ejected.

Abstract: A method is disclosed. The method includes analyzing an image of a first flushing pattern applied on a medium during production of a print job to detect presence of one or more defective ink jet nozzles and adjusting to a second flushing pattern during the production of the print job upon detecting the presence of one or more defective print head nozzles.

Abstract: An inkjet printer is operated to print an ink image and clear inkjets simultaneously. The inkjet printer delivers to a first inkjet in a printhead a first signal that ejects an ink drop from the first inkjet that corresponds to a pixel of an ink image stored in a memory of the printer and delivers to at least one other inkjet in the printhead a second signal that ejects an ink drop from the at least one other inkjet that does not correspond to a pixel of the ink image stored in the memory of the printer.

Abstract: There is provide an ink-jet recording apparatus including: an ink containing a self-dispersible pigment; an ink-jet head configured to discharge the ink; an absorber which is arranged in an area facing a discharge surface of the ink-jet head, and which is configured to absorb the ink discharged from the ink-jet head; and a liquid agent which contains a water-soluble organic solvent, and which is absorbed in the absorber, wherein a surface tension of an aqueous solution containing the liquid agent at concentration of 5% by weight is not more than 50 mN/m; and a blending percentage by weight of the water-soluble organic solvent in the liquid agent is not less than five times a blending percentage by weight of the self-dispersible pigment in the ink.

Abstract: A liquid-consuming apparatus includes: a tank including a liquid storage chamber configured to store a liquid, an inlet through which the liquid is poured into the liquid storage chamber, and a liquid flow channel configured to let the liquid flow therethrough from the liquid storage chamber; a cap configured to be attachable to the tank to cover the inlet; a cover configured to be movable relative to the tank between a closed position where a surface, of the tank, in which the inlet is formed is covered and an open position where the surface of the tank is exposed; and a holder configured to hold the cap removed from the tank. The cover is prevented from moving to the closed position by the cap held by the holder to be positioned in a movement area of the cover moving from the open position to the closed position.

Abstract: A controller controls an ink liquid feeding operation performed by an ink pump from a negative pressure tank to a pressure tank, and an ink replenishing operation performed by an ink replenisher according to a liquid level in each of the pressure tank and the negative pressure tank so that, during purging, the liquid level in each of the pressure tank and the negative pressure tank is maintained at a reference level.

Abstract: A droplet ejecting apparatus includes a liquid filling chamber filled with a liquid, and a plurality of pressure chambers in communication with the liquid filling chamber and filled with the liquid. Each of the pressure chambers includes a communication port in communication with the liquid filling chamber, a pressure generating element for exerting pressure on the liquid which fills the interior of each pressure chamber, and a nozzle for ejecting the liquid in each pressure chamber therefrom in the form of droplets. A recovery controller brings the pressure generating element corresponding to the communication port included in a partial region of the liquid filling chamber into operation to cause the corresponding nozzle to eject the droplets.

Abstract: When a nozzle abnormality detecting mechanism detects an abnormality of the nozzle, in the maintenance process of causing the drive waveform to be applied plural times to the actuator corresponding to the nozzle that the detecting mechanism detects as being abnormal, and thereby causing the ejecting operation to be performed, at least a first-time drive waveform applied to the actuator is a flushing pulse which causes a meniscus in the nozzle not to be positively attracted from an initial position to the pressure chamber, but causes the meniscus to be extruded to the ejection side and thereby causes the liquid to be ejected from the nozzle.

Abstract: According to one example, there is provided a printing system having a print bar on which are installable multiple printheads. The system comprises a nozzle servicing module moveable across the length of the print bar to selectively perform a nozzle servicing operation on a group of printhead nozzles.

Abstract: An inkjet recording apparatus includes a conveyance section, a recording head, a maintenance mechanism, and a control section. The conveyance section conveys a recording medium. The recording head discharges ink droplets toward the recording medium while the conveyance section conveys the recording medium. The maintenance mechanism performs maintenance on the recording head. The control section causes the maintenance mechanism to operate upon determination that a width of a next recording target recording medium is greater than a width of a recording medium subjected to image recording prior to the next recording target recording medium.

Abstract: A liquid ejecting apparatus, including: a tank for storing a liquid; a liquid ejecting head including an inner passage having an inlet, an outlet and individual liquid channels; a supply passage connecting the tank and inlet; a return passage connecting the tank and outlet; a supply device to forcibly supply the liquid in the tank to the inner passage; a restrictor valve to restrict a liquid amount flowing through the return passage; and a controller to drive the supply device while placing the restrictor valve in an open state, where the liquid in the tank returns back thereto via the supply passage, the inner passage, and the return passage, in order, and to drive the supply device to keep circulation and control the restrictor valve to restrict, during the circulation, the amount of the liquid that flows through the return passage, for discharging the liquid from the ejection opening.

Abstract: A liquid ejecting apparatus includes: a liquid ejecting unit that has a liquid ejecting head moving back and forth in a scanning direction, the liquid ejecting head being provided with a nozzle surface in which nozzles capable of ejecting liquid are formed; a wiping portion that wipes the nozzle surface; a liquid receiving portion that is capable of receiving the liquid ejected through the nozzles; and a maintenance portion that performs maintenance on the liquid ejecting head. Further, a receiving area where the liquid receiving portion is provided is disposed at a position that is adjacent to a wiping area where the wiping portion is provided and is more distanced from a landing area where the liquid ejected through the nozzles toward an ejection target medium lands than the wiping area in the scanning direction.

Abstract: An object is to provide a head drive unit that prevents an increase in viscosity of inks in nozzles even when a head is present outside an image forming region and also provide an inkjet printer, and the head drive unit includes: a drive signal output device 31 that outputs either a discharge signal or a meniscus oscillation signal to each head; a cycle generator 326 that generates a cyclic oscillation timing signal for the meniscus oscillation signal; an input interruption detector 324 that detects that input of a print timing signal is interrupted; and a drive signal selector 32 that selects the meniscus oscillation signal as a drive signal output from the drive signal output device and continuously applies the meniscus oscillation signal to all nozzles of each head in synchronization with an oscillation timing signal when interruption of the input of the print timing signal is detected.

Abstract: A number of printable images on a continuous sheet and printing throughput can be increased when printing an image in which images of different sizes coexist and are arranged. In a printing apparatus which prints a plurality of images by using a full-line inkjet printhead while conveying the sheet, the size of an image and a position of a sheet where the image is printed are analyzed from inputted image data. A necessary type of preliminary discharge is determined in accordance with the analysis result. Then, print data is generated by adding, to the image data, data for preliminary discharge complying with the determined type of preliminary discharge. It is controlled to print by the full-line printhead based on the generated print data.

Abstract: A printing apparatus includes a carriage configured to perform a reciprocating movement while facing a sheet, the carriage being equipped with an inkjet head, and a drying unit configured to apply energy from above the carriage to the sheet so as to dry ink, wherein, when the carriage performs the reciprocating movement, the carriage is reversed at a reversing position where the application of the energy to an end of the sheet or an end of an image formed on the sheet is not blocked by the carriage.

Abstract: An inkjet recording apparatus that performs preliminary discharge operation without a carriage and a recording medium interfering with each other is provided. The inkjet recording apparatus performs, at a center region in a conveyance direction of a recording medium, the preliminary operation at a position according to an edge portion of the recording medium obtained by an optical sensor. Further, the inkjet recording apparatus performs, at a leading edge region and a trailing edge region of a recording medium, the preliminary operation at a position based on input data.

Abstract: An embodiment of this invention is directed to increasing the number of printable images on a continuous sheet and throughput when printing an image in which images of different sizes coexist and are arranged. Upon printing plural images by using a full-line inkjet printhead while conveying the sheet, the time during which no ink is discharged between successive images is analyzed from inputted image data for each nozzle of the printhead. Based on the analysis result, it is determined whether preliminary discharge is necessary during printing of the plural images. If preliminary discharge is necessary, print data to be used by the printhead is generated by adding, to the image data, data for preliminary discharge. Ink is discharged from the printhead based on the generated print data.

Abstract: In a method to execute a printing interruption in a printing operation of an ink printing system in which a printing substrate is printed with at least one print head during the printing interruption in which a feed speed of the printing substrate web comes to a standstill, at least one vibration pulse is sent to the at least one print head to trigger vibration oscillations before a print controller loads print data into the at least one print head. Thereafter a print-start signal is sent to the at least one print head.