In an inkjet type image forming apparatus, a cartridge includes a first storage chamber and a first fluid communication portion. The first air communication portion allows the first storage chamber to be in communication with an atmosphere. A second storage chamber stores the ink supplied from the first storage chamber by hydraulic head difference. The switch portion switches a state of the second air communication portion between a first state in which the second storage chamber communicates with the atmosphere and a second state in which an amount of air flow between the second storage chamber and the atmosphere is smaller than that in the first state. The controller controls the switch portion to switch the state of the second air communication portion from the first state to the second state. After the recording process, the controller controls the switch portion to switch the state to the first state.

When a porous body is repeatedly used to perform treatment of absorbing and removing an aqueous liquid component on an image which is formed using a reaction liquid and an ink and contains the aqueous liquid component and a coloring material, recovery treatment for applying a recovery liquid to the porous body is performed, the recovery liquid having a viscosity lower than a viscosity of the reaction liquid and the ink.

A liquid holding amount of a porous body of a liquid absorbing member for removing at least a portion of an aqueous liquid component from an image obtained by ink jet printing is controlled so as to reduce damage to the porous body while maintaining performance of removing attached matters from the porous body by using a cleaning member which abuts on the porous body and has an adhesive force.

A liquid discharge apparatus uses a drive signal including a micro-vibration waveform which causes the piezoelectric element to micro-vibrate such that an ink is not discharged from the nozzle in a case of being applied to the piezoelectric element as the drive signal and a drive waveform which deforms piezoelectric element such that the ink is discharged from the nozzle in a case of being applied to the piezoelectric element as the drive signal. The presentation unit selectably presents the indirect information from which the ink discharge status can be estimated such as the types of ink and the usage status of the ink or the like. The control unit changes the strength of the micro-vibration caused by the micro-vibration waveform based on the indirect information selected on the presentation unit.

An image formation device includes a plurality of nozzles arranged in a sub scan direction and configured to eject ink, a processor, and a memory configured to store computer-readable instructions that, when executed by the processor, perform processes including, performing a determination control configured to determine whether an unstable ejection condition, under which the ejection of the ink from the nozzles becomes unstable, is satisfied, and performing a first print control configured to cause printing to be performed by a multi-pass method when it is determined that the unstable ejection condition is satisfied.

An image formation device includes a plurality of nozzles, a processor which forms an image on the basis of print data, and a memory which stores computer-readable instructions that, when executed by the processor, perform processes including, performing first ejection control which ejects a first amount of the ink at a timing of one of a forward path and a return path in the main scan direction, when printing is performed by a multi-pass method in which each of pixel arrays is printed by a plurality of main scans and, in each of the plurality of main scans, the ink is ejected onto the same pixel array from the respectively different nozzles, and performing second ejection control configured to eject a second amount of the ink at a timing different from the previous timing of the ejection of the ink, the second amount being smaller than the first amount.

The present disclosure relates to a 3D surface printing apparatus for the edge area of substrate, the apparatus including a jig part that erects the substrate and immobilizes it, a nozzle part that comprises a nozzle that ejects ink through Electrohydrodynamic (EHD) jetting by applying a voltage to an electrode, from above the erected substrate; a moving part that moves the nozzle left and right; and a control part that controls a printing operation, wherein the moving part prints a pattern that is continuously connected along a front surface of the rim of the substrate, a side surface of the substrate and a rear surface of the rim of the substrate as it horizontally moves the nozzle, and the control part controls the printing operation, considering changes in 3D electric field distribution.

A printing apparatus includes a print head provided with a discharge port that discharges liquid and a pressure chamber filled with the liquid to be discharged from the discharge port, and configured to perform a printing operation by discharging the liquid from the discharge port based on print data, includes a circulation unit that performs circulation of the liquid in a circulation passage including the pressure chamber in a state where the printing operation is performed, and includes a control unit that controls the circulation unit to continue the circulation for a predetermined time after the printing operation is completed.

In an inkjet type image forming apparatus, a cartridge includes a first storage chamber and a first fluid communication portion. The first air communication portion allows the first storage chamber to be in communication with an atmosphere. A second storage chamber stores the ink supplied from the first storage chamber by hydraulic head difference. The switch portion switches a state of the second air communication portion between a first state in which the second storage chamber communicates with the atmosphere and a second state in which an amount of air flow between the second storage chamber and the atmosphere is smaller than that in the first state. The controller controls the switch portion to switch the state of the second air communication portion from the first state to the second state. After the recording process, the controller controls the switch portion to switch the state to the first state.

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.