A method applying a bead of a coating product to a surface by a print head equipped with nozzles, each centered on a central axis, the coating product application moves the print head and the surface relative to each other, by moving the print head along a fixed trajectory relative to the surface without rotating the print head about an axis parallel to the central axes of the nozzles. The method includes selecting certain nozzles for a point of the trajectory based on the trajectory direction at this point, and activating the selected nozzles at this point. The selected nozzles are arranged in a line, or form part of a nozzle group delimited by a line, whose regression line coincides with a line as close as possible to a line perpendicular to the trajectory direction from among lines that can be defined with nozzles of the print head.

An alignment of jet holes of a liquid jet head is smoothly performed. A liquid jet head according to an embodiment of the present disclosure includes a nozzle section having a jet hole for liquid, a support member configured to support the nozzle section, and a position adjustment mechanism configured to adjust a position of the jet hole with respect to a carriage. The position adjustment mechanism includes a reference member a position of which with respect to the carriage is fixable, a position adjustment member which is coupled to the support member, and is configured to push the reference member to change a relative distance with respect to the reference member to thereby displace the support member on the carriage, and an intermediary member intervening between the reference member and the position adjustment member. The intermediary member is attached to either one of the reference member and the position adjustment member to form a first pressure-receiving surface facing to a displacement direction of the support member, and the other of the reference member and the position adjustment member has contact with the first pressure-receiving surface.

Disclosed herein is a technique that enables a carriage printer to reduce precision in a media conveyor by improving mobility of the carriage. The carriage includes a mobile jetplate that adjusts the position of the printheads within the carriage. The mobile jetplate includes multiple motors that enable shifts in an axis matching the axis of the media. Operating the motors of the jetplate at different locations or at different intensities causes the jetplate to skew and achieve mobility of multiple axes. A set of sensors monitor media skew and shifts of the mobile jetplate are able to compensate for that skew. An additional set of motors shift the carriage to compensate for deformation of the beam that the carriage shuttles along.

A liquid discharge apparatus includes a discharge head having a nozzle row, a conveyor is configured to convey a discharge target medium, a head mover configured to move the discharge head in an orthogonal direction, a head rotator configured to rotate the discharge head, and circuitry configured to perform a position setting operation to cause the head mover to move the discharge head to a position in the orthogonal direction, a discharging operation to cause the discharge head to discharge a liquid at the position, a medium conveying operation to cause the conveyor to convey the discharge target medium, and a changing operation to cause the head mover to change the position of the discharge head, and cause the head rotator to rotate the discharge head based on a length of droplets of the liquid landed on the discharge target medium by the above-described operations.

Disclosed herein is a technique that enables a carriage printer to reduce precision in a media conveyor by improving mobility of the carriage. The carriage includes a mobile jetplate that adjusts the position of the printheads within the carriage. The mobile jetplate includes multiple motors that enable shifts in an axis matching the axis of the media. Operating the motors of the jetplate at different locations or at different intensities causes the jetplate to skew and achieve mobility of multiple axes. A set of sensors monitor media skew and shifts of the mobile jetplate are able to compensate for that skew. An additional set of motors shift the carriage to compensate for deformation of the beam that the carriage shuttles along.

An implementation of an assembly of the present teachings includes a transport roll having a shaft with a tapered surface and an encoder having a coupler that defines a recess and has a tapered surface. During use of the assembly, the tapered surface of the shaft physically contacts the tapered surface of the coupler, and the encoder can be urged toward the transport roll using a spring such as a leaf spring.

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 switching portion is configured to change in position between a first switching position and a second switching position, at which the switching portion protrudes more from a bottom surface of a housing than at the first switching position. The first switching position is a position at which the switching portion is located in a state of being in contact with the installation surface when the housing is installed on the installation surface. The second switching position is a position at which the switching portion is located when the housing is not installed on the installation surface. The switching portion does not restrict a change in position of a body in a position-change direction when located at the first switching position and restricts the change in position of the body in the position-change direction when located at the second switching position.

Printing system including at least a first and a second print head in which the printing system is configured in such a way that the first and second print heads can be adjusted actuator-based with respect to a printing medium by positioning and orienting using an adjustment actuator The printing system includes at least one adjustment actuator less than the number of print heads provided in the printing system, and an auxiliary device is provided in the printing system such that with the aid thereof an operative connection of the at least one adjustment actuator with the first print head can be released and/or created, and an operative connection with the second print head can be created and/or released, preferably also actuator-based or in a pneumatic and actuator-based manner, and particularly preferably automatically.

Provided are a fringe information measuring apparatus that measures information on a fringe region using a temperature sensor array and a substrate treating system including the same. The fringe information measuring apparatus comprises: a laser sensor configured to output a first laser light and a second laser light to intersect each other; a thermal sensor array configured to pass through a fringe region formed by the intersection of the first laser light and the second laser light; and a control module configured to measure a position of the fringe region based on information obtained when the thermal sensor array passes through the fringe region.