An inkjet printing apparatus includes a mounting unit where a recording medium is mountable, a head unit that ejects ink droplets to the recording medium, a planar direction driving unit that drives at least one of the head unit ejecting the ink droplets and the mounting unit to move in a planar direction and that changes a relative positions of the head unit and the mounting unit in the planar direction, and a height direction driving unit that changes a relative positions of the head unit and the mounting unit in a height direction perpendicular to the planar direction. The planar direction driving unit has a moving speed changing mechanism that changes a carriage speed between the head unit and the mounting unit in the planar direction. The height direction driving unit has a distance changing mechanism that changes a distance between the head unit and the mounting unit.

An information processing apparatus includes a storage section configured to store a learnt model obtained by machine learning on a condition for an adjustment interval in accordance with a use state of a print apparatus, based on a data set in which use state information of the print apparatus and adjustment interval information indicating an interval of performing an adjustment process for a print position on a print medium are associated with each other, a reception section configured to receive the use state information of the print apparatus, and a processor configured to perform a process of estimating the adjustment interval, based on the use state information received and the learnt model.

A printing apparatus includes: a platen that supports a printing medium; a head-portion that discharges droplets toward the printing medium while reciprocating on the printing medium; an interval-adjusting-mechanism that adjusts an interval between the platen and the head-portion; and a controller that controls the head-portion and the interval-adjusting-mechanism, in which the controller has a first printing mode in which printing is performed while the interval is set to a first interval and a second printing mode in which the printing is performed while the interval is set to a second interval that is larger than the first interval, as a printing mode in which the printing is performed on the printing medium. The controller controls movement of the head-portion such that a movement stop time of the head-portion when a movement direction of the head-portion is reversed is longer in the second printing mode than in the first printing mode.

An inkjet printer including an inkjet head, a head scanning unit, a wave shape generating mechanism to deform a recording medium into a predetermined wave shape, an obtaining device to obtain information concerning a type of the recording medium to be used in a printing operation, a gap information storing device to store gap information related to a gap between an ink discharging surface and the recording medium in association with a predetermined type of the recording medium, the gap information being acquired from a predetermined range in the recording medium, and a correcting device to correct the gap information according to the type of the recording medium obtained by the obtaining device when the type of the recording medium obtained by the obtaining device is different from the predetermined type of the recording medium stored in association with the gap information, is provided.

A control unit controls a print head to print a print image by ejecting ink through a nozzle to form dots on a print medium and a movement unit to impart relative movement between the print head and the print medium to print a print image on the print medium. The control unit obtains a dot adjustment value in the predetermined print operation based on the measurement result of a measurement unit measuring a first pattern composed of a print image printed by the predetermined print operation including the relative movement, and a second adjustment value for adjusting dot printing positions in the predetermined print operation in a unit of length shorter than in the adjustment using the first adjustment value based on a second pattern printed by the predetermined print operation in a density according to density information on the first pattern, measured by the measurement unit.

A recording apparatus includes a recording head, a carrying part, a carriage and a detector that optically detects an image recorded on a recording medium, and a controller that obtains a correction value of recording positions of dots from a test pattern, and corrects the recording positions of the dots based on the correction value. The test pattern includes an adjustment pattern and a reference pattern, the adjustment pattern includes multiple overlapping patterns that are each formed by overlapping two basic patterns, the reference pattern is formed of predetermined patterns that each correspond to the multiple overlapping patterns, the correction value of recording positions of dots, which is obtained by the controller, is calculated based on adjustment detection results respectively obtained by detecting the multiple overlapping patterns and a reference detection result obtained by detecting the predetermined pattern forming the reference pattern, and the controller corrects the recording positions of dots based on the correction value.

An inkjet printing apparatus includes a mounting unit where a recording medium is mountable, a head unit that ejects ink droplets to the recording medium, a planar direction driving unit that drives at least one of the head unit ejecting the ink droplets and the mounting unit to move in a planar direction and that changes a relative positions of the head unit and the mounting unit in the planar direction, and a height direction driving unit that changes a relative positions of the head unit and the mounting unit in a height direction perpendicular to the planar direction. The planar direction driving unit has a moving speed changing mechanism that changes a carriage speed between the head unit and the mounting unit in the planar direction. The height direction driving unit has a distance changing mechanism that changes a distance between the head unit and the mounting unit.

A printing method includes a printing process that performs printing on a recording medium, in which, in the printing process, a first correction is performed in which discharging portions, where a first correction target head other than a first reference head among heads of a first group and a second correction target head other than the first reference head among the heads of a second group discharge inks, are corrected based on a first reference printing pattern, and a second correction is performed in which a discharging portion, where a third correction target head among heads of a third group other than a second reference head discharges the inks, is corrected based on the first reference printing pattern and a second reference printing pattern.

A method for determining a working gap includes a first recording step for ejecting ink from a recording head onto a first recording medium to record a test pattern, a first imaging step for capturing the test pattern recorded on the first recording medium in each of a state where a distance between the recording head and the first recording medium is a first distance, and a state where a distance between the recording head and the first recording medium is a second distance, a function calculating step, a second recording step for recording the test pattern on a second recording medium, a second imaging step for capturing the test pattern recorded on the second recording medium, and a working gap determining step for determining, based on the number of pixels of the captured test pattern and a function, a distance between the recording head and the second recording medium.

An image forming apparatus includes (a) recording heads, (b) an optical detection part that emits light, receives reflected light reflected on a recording medium, and generates a sensor output in correspondence with the reflected light, (c) a medium information acquisition processing part that sets a pattern image formation position where a test pattern image is formed on the recording medium based on reflection characteristics, the reflection characteristics being obtained from the sensor output of the optical detection part, (d) a pattern image formation processing part that forms the test pattern image at the pattern image formation position using the recording heads, (e) a pattern image detection processing part that detects the test pattern image at the pattern image formation position using the optical detection part, generating a detection result, and (f) an image forming condition setting part that sets an image forming condition based on the detection result.