An ink jet recording apparatus includes an ink container in which ink to be used to perform printing on a print target is stored, a nozzle which is connected to the ink container and from which pressurized and supplied ink is jetted, charging electrodes that charge ink particles jetted from the nozzle with electricity, deflecting electrodes that polarize the ink particles charged with electricity by the charging electrodes, a gutter that recovers ink not used for printing, a solvent container in which a solvent is stored, and a liquid nozzle which is connected to the solvent container and from which a pressurized and supplied solvent is jetted. The liquid nozzle includes a liquid flow passage portion that extends from the nozzle in a direction of the gutter, and a liquid jet hole that is formed at an angle allowing the pressurized and supplied solvent to hit the nozzle through the liquid flow passage portion.

It is hereby disclosed a method to print on porous substrate by a printer comprising: a print zone; a conveyor to receive a porous substrate on a loading zone and to move the porous substrate along a transport direction between the print zone and the loading zone; a print engine positioned on the print zone for ejecting printing fluid towards the porous substrate; wherein the method comprises ejecting printing fluid towards a front side the porous substrate and, by a controller, activating a vacuum source as to exert a vacuum on a back side of the porous substrate being the vacuum exerted while the porous substrate is within the print zone.

An object is to provide a liquid ejection apparatus and a method of controlling a liquid ejection apparatus capable of preventing bubbles generated by kogation removal from interfering with the kogation removal. To this end, in a long liquid ejection head with a liquid circulated therethough, a pressure chamber is pressurized and a voltage is applied to a heat applying portion and an electrode to perform kogation removing cleaning.

A cosmetic handy ink-jet printer including an ink-jet head for ejecting an ink containing an inorganic pigment, an ink circulation device for circulating the ink, and a body deelectrification device for removing static electricity from a body of the printer. The ink circulation device includes an ink receptacle in which the ink is accommodated, and an ink circulation path through which the ink is circulated. The body deelectrification device is a capacitor or a grounded circuit.

A controller includes a second controller that periodically performs a flushing operation of injecting a predetermined amount of ink from a nozzle, a third controller that repeatedly performs the flushing operation until a remaining amount of the ink in a storage chamber after the flushing operation is detected by a detector to be a first amount, a first counter that counts a first operation number of times of the flushing operation, and a fourth controller that performs a first cleaning operation of absorbing a fluid in a sealed space by a suction pump when the first operation number of times counted by the first counter reaches a first threshold value.

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.

A printhead maintenance system includes: an elongate inkjet printhead having a nozzle face containing a plurality of inkjet nozzles; a carriage movable longitudinally along the printhead in a cleaning direction, the carriage including a maintenance member having: a fluid bath having a mouth opposing the nozzle face of the printhead, a primary fluid inlet at an upstream end of the fluid bath relative to the cleaning direction and a fluid outlet at a downstream end of the fluid bath relative to the cleaning direction; and a traversing mechanism for traversing the carriage longitudinally along the printhead in the cleaning direction. The maintenance member does not contact inkjet nozzles of the printhead, and the fluid bath is configured to provide a greater fluid velocity at the downstream end relative to the upstream end.

A data-generating unit of an inkjet recording apparatus recognizes, based on a detection signal of a recording medium output from a recording medium detection sensor, an open part region that is a region of an open part located in a position shifted from a recording medium detected by the recording medium detection sensor in a transport direction among regions of a plurality of open parts included in an open part reading data read by an open part detection sensor to generate flushing data in accordance with the open part region. A flushing control unit recognizes at least one non-image-forming period in which the open part corresponding to the region passes a position facing the recording head by running of the transport belt, based on the detection signal, and causes the recording head to execute flushing, based on flushing data, in the at least one non-image-forming period.

In order that the interior of a cap member, in a case where the cap member abuts to a cover member, is allowed to have improved airtightness so that the cap member can sufficiently function, a sealing member is used to seal between the cover member and first and second flow path members for retaining the cover member.

A printing apparatus includes: a flushing determination unit, and a storage unit, wherein the flushing determination unit is configured to: calculate a temporary return position, a temporary reciprocating movement time that is necessary when the carriage is returned at the temporary return position, and a threshold value that is a longest non-ejection time during which printing can be performed in a stable manner at an environmental temperature measured by a thermometer, based on print data to be printed in reciprocating movement of the carriage; and determine whether the temporary reciprocating movement time exceeds the threshold value, wherein when the temporary reciprocating movement time exceeds the threshold value, the flushing determination unit sets a position at which the one reciprocating movement time becomes longer than the temporary reciprocating movement time as a return position in the reciprocating movement, and determines to perform the flushing in a return path.