There is provided a motor driving system in which an encoder sensor is configured to move with a driven object with respect to an encoder scale and output an encoder signal. A controller is configured to control a motor based on the encoder signal, thereby controlling movement of the driven object. The controller estimates an obstructing area. In the obstructing area, the encoder sensor reads a part of the encoder scale where an obstacle is adhered. The controller calculates a control error of the motor in the obstructing area based on the encoder signal output after the encoder sensor passes through the obstructing area, and determines a compensation amount of a controlling input value input during a period while the encoder sensor passes through the obstructing area.

An inkjet printer capable of improving uniformity of the quality of an image printed on a recording medium is provided and includes: a table formed with a support surface that supports a recording medium; an inkjet head formed with a nozzle that ejects ink; a Y-bar that supports the inkjet head to be movable in a main scanning direction; two lifting mechanisms capable of changing a Y-bar tilt serving as a tilt of the Y-bar with respect to the support surface; a head gap sensor that detects a head gap, which is a distance from the recording medium to the nozzle of the inkjet head; and a tilt adjustment portion that adjusts the Y-bar tilt by the two lifting mechanisms to a tilt that reduces variations of the head gaps detected by the head gap sensor at each of multiple positions in the main scanning direction.

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.

Printing machine, for printing a laminar web, comprising a feeding unit (10) defining a printing area (A); an inkjet printing station (20) comprising a plurality of inkjet printing modules (21) slidably arranged along a transverse guide (22); a positioning device (30) adapted to precisely slide the inkjet printing modules (21) along the transverse guide (22); wherein each inkjet printing module (21) includes a first coupling (31) and is independent from other inkjet printing modules (21) allowing an independent movement of each inkjet printing module (21) along the transverse guide (22); and the positioning device (30) includes a second coupling (32) complementary to each first coupling (31), the second coupling (32) being releasably engageable to each first coupling (31) in an automatic manner, the positioning device (30) being configured to precisely slide each inkjet printing module (21) engaged thereto, along the transverse guide (22).

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, estimates a first state quantity of the target object and a second state quantity obtained by time differentiation of the first state quantity for second feedback control for the target object at a second period, shorter than the first period, based on the detection signal, generates a first operation quantity for the first feedback control based on the control quantity, generates a second operation quantity for the second feedback control based on the first and second state quantities, determines a sign of the second operation quantity from a relationship between the first and second state quantities, and generates an operation quantity on the target object from the first and second operation quantities.

In a liquid discharging apparatus, a head unit includes a driving element, a first circuit that controls drive of the driving element based on a first signal including a first data signal and a second data signal, and a first conversion circuit that converts a first optical signal into the first data signal, and converts a second optical signal into the second data signal, a driving circuit includes a second circuit that outputs a second signal including a third data signal and a fourth data signal, a second conversion circuit that converts the third data signal into the first optical signal, and converts the fourth data signal into the second optical signal, a first cable, and a second cable, the first cable propagates the first optical signal during a first period, and the second cable propagates the second optical signal during a second period.

A printing apparatus includes: a head portion that discharges droplets toward a printing medium while reciprocating on the printing medium; and a controller that controls movement of the head portion during a printing operation such that a movement stop time of the head portion when a movement direction of the head portion is reversed at an endmost portion of a range in which the head portion moves is longer than the movement stop time of the head portion when the movement direction of the head portion is reversed on the printing medium.

An ink jet type printer includes a recording head that performs recording on a paper sheet by ejecting ink, a carriage that reciprocates in a width direction while supporting the recording head, and a power supply unit that supplies electricity to driving targets including a driving source of the carriage and the recording head. The power supply unit is disposed such that at least a part thereof overlaps with a moving region of the carriage on an upper side.

An apparatus (1) for controlled motion of one or more printing units (2) designed for printing images (I) on one or more faces (F) of a sheet material (M) that is designed to move in a feeding direction defining a longitudinal axis (L). The apparatus (1) is adapted to be associated with a machine (3) for cutting and creasing customized packages and comprises a stationary frame (10) defining an elongate transverse axis (T), at least one box-like support (12) for a corresponding printing unit (2), which is slidably mounted on transverse guide means (13) integral with the frame (10), drive means (26) for driving the box-like support (12) along transverse guide means (13), the drive means (26) comprise at least one section of a stationary and flexible belt (27) having a predetermined length (I) and end portions (28, 29) stably secured to the frame (10), as well as at least one powered roller (31) associated with the support (12), and having an intermediate portion (30) of the belt section (27) at least partially wound thereon for its rotation to promote the movement of the support (12) relative to the belt section (27). A machine (3) for cutting and creasing customized packages, comprising the apparatus for driving the printing units (2).

A printing device includes: a controller configured to perform printing wherein in a first case where a first condition is not satisfied, the controller controls the main-scanning unit to perform the main-scanning at a first speed and controls the print head to discharge the ink to correspond to a specific pixel of a partial image to be printed by the partial printing when the print head is at a first position, and in a second case where the first condition is satisfied, the controller controls the main-scanning unit to perform the main-scanning at a second speed slower than the first speed and controls the print head to discharge the ink to correspond to the specific pixel when the print head is at a second position, which is located at a downstream of the first position in the direction of the main-scanning.