A liquid discharge device includes a liquid discharge unit that discharges a liquid and a cleaner. The liquid discharge unit has a first end, a second end, and a third end extending in a direction intersecting the first end and the second end. The cleaner moves relative to the liquid discharge unit in a movement direction from the first end toward the second end while contacting the liquid discharge unit with a contact force and a contact pressure. The contact force of the cleaner contacting one of the first end and the second end is smaller than the contact force of the cleaner contacting a portion of the liquid discharge unit other than the first end and the second end.

A printing unit including: a unit chassis; and first and second inkjet modules mounted on the unit chassis, each inkjet module having a respective printhead nest assembly, each printhead nest assembly including a replaceable printhead nestably secured within a respective nest with each nest enveloping its respective printhead about all sides. The nest includes: a cantilever spring engaged with its respective printhead, the cantilever spring being biased away from the printhead; and a screw adjuster in butting engagement with the cantilever spring for urging the cantilever spring towards and away from the printhead. In use, a skew of one printhead is mechanically adjustable relative to the other printhead via rotational movement of the screw adjuster.

A printing unit including: a unit chassis; and first and second inkjet modules mounted on the unit chassis, each inkjet module having a respective printhead nest assembly, each printhead nest assembly including a replaceable printhead nestably secured within a respective nest with each nest enveloping its respective printhead about all sides. The nest includes: a cantilever spring engaged with its respective printhead, the cantilever spring being biased away from the printhead; and a screw adjuster in butting engagement with the cantilever spring for urging the cantilever spring towards and away from the printhead. In use, a skew of one printhead is mechanically adjustable relative to the other printhead via rotational movement of the screw adjuster.

The present invention relates to a movable thermal printing device, which comprises a gear set, a pressing roller set, and a heating component. The gear set includes a first motor, a first gear, and a rack gear. The pressing roller set includes a frame, a first roller, and a second motor. A sensing medium is attached below the first roller. When the first gear rotates counterclockwise, the rack gear, the pressing roller set, and the sensing medium will be driven to move upwards and away from the heating component. When the first gear rotates clockwise, the rack gear, the pressing roller set, and the sensing medium will be driven to move downwards and contact the heating component for printing sensing medium and for avoiding the sensing medium from contacting the heating component in reverse rotation and thus avoiding the problems of damages or print failure.

The present invention relates to a movable thermal printing device, which comprises a gear set, a pressing roller set, and a heating component. The gear set includes a first motor, a first gear, and a rack gear. The pressing roller set includes a frame, a first roller, and a second motor. A sensing medium is attached below the first roller. When the first gear rotates counterclockwise, the rack gear, the pressing roller set, and the sensing medium will be driven to move upwards and away from the heating component. When the first gear rotates clockwise, the rack gear, the pressing roller set, and the sensing medium will be driven to move downwards and contact the heating component for printing sensing medium and for avoiding the sensing medium from contacting the heating component in reverse rotation and thus avoiding the problems of damages or print failure.

Printhead carriers and adapters are disclosed. An example disclosed print mechanism includes an adapter to simultaneously couple a printhead assembly to both a logic circuit of a media processing device and a power source of the media processing device; a printhead carrier coupled to the adapter; and wherein a first connection, between data input connector and the logic circuit, and a second connection, between the power input connector and the power source, are maintained when the printhead assembly is removed from the print mechanism.

Printhead carriers and adapters are disclosed. An example disclosed print mechanism includes an adapter to simultaneously couple a printhead assembly to both a logic circuit of a media processing device and a power source of the media processing device; a printhead carrier coupled to the adapter; and wherein a first connection, between data input connector and the logic circuit, and a second connection, between the power input connector and the power source, are maintained when the printhead assembly is removed from the print mechanism.

A printer comprising a printhead configured to selectively cause a mark to be created on a substrate. The printer comprises a stepper motor having an output shaft coupled to the printhead, the stepper motor being arranged to vary the position of the printhead relative to a printing surface against which printing is carried out, and to control the pressure exerted by the printhead on the printing surface. The printer further comprises a sensor configured to generate a signal indicative of an angular position of the output shaft of the stepper motor. The printer further comprises a controller arranged to generate control signals for the stepper motor so as to cause a predetermined torque to be generated by the stepper motor; said control signals being at least partially based upon an output of said sensor.

A printer comprising a printhead configured to selectively cause a mark to be created on a substrate. The printer comprises a stepper motor having an output shaft coupled to the printhead, the stepper motor being arranged to vary the position of the printhead relative to a printing surface against which printing is carried out, and to control the pressure exerted by the printhead on the printing surface. The printer further comprises a sensor configured to generate a signal indicative of an angular position of the output shaft of the stepper motor. The printer further comprises a controller arranged to generate control signals for the stepper motor so as to cause a predetermined torque to be generated by the stepper motor; said control signals being at least partially based upon an output of said sensor.

A printer comprising a printhead configured to selectively cause a mark to be created on a substrate, a stepper motor having an output shaft coupled to the printhead, the stepper motor being arranged to vary the position of the printhead, a sensor configured to generate a signal indicative of an angular position of the output shaft of the stepper motor, and a controller arranged to generate control signals for the stepper motor. Said control signals being at least partially based upon an output of said sensor and at least partially based upon a target position. Said control signals for the stepper motor are arranged to cause a magnetic field to be generated by windings of the stepper motor. A field angle being defined between an angular position of the output shaft of the stepper motor, and an orientation of the generated magnetic field. Said control signals comprise a first control signal configured to cause said field angle to have a predetermined value, and a second control signal configured to cause said magnetic field to have a predetermined magnitude, and said controller is configured to vary said first and second control signals based upon said target position and said output of said sensor.