A printer includes a first accommodating portion, a supply roller, a recording device, a cutter configured to cut a recording medium into a first recording medium and a second recording medium, a second accommodating portion, a third accommodating portion that accommodates an unrecorded second recording medium that is the second recording medium on which an image has not been recorded by the recording device, and a switcher. The third accommodating portion is movable between a first position at which the third accommodating portion receives the unrecorded second recording medium cut by the cutter and a second position at which the unrecorded second recording medium accommodated in the third accommodating portion is in contact with the supply roller. The supply roller is configured to supply the unrecorded second recording medium accommodated in the third accommodating portion that is positioned at the second position.

An optical sensor device (10) includes an application module (12) for applying an irregular pattern of marks to a surface of a medium and an optical detector module (14). The optical detector module (14) acquires images of the applied marks and may determine an advancement speed of the medium based on the acquired images.

A printing apparatus provided with a transportation mechanism for a printing medium includes: a storage configured to store a machine-learned model that outputs a setting value of the transportation mechanism for causing, based on state variables including a print length as a length of a print product printed on the printing medium, the print length to be close to a reference; and a processor configured to perform printing by controlling the transportation mechanism in accordance with the setting value acquired based on the machine-learned model.

In a printing apparatus, a controller is configured to control a printing unit such that printing is started after a transport distance of the substrate reaches a pre-discharge transport distance, in which the pre-discharge transport distance is set to a value not less than a first longest distance, provided that a transport distance in a condition in which the transport distance is a longest distance among conditions 1, 2, and 3 provided below is the first longest distance. Condition 1: a transport distance until a region of the substrate that was nipped between a front driving roller and a nip roller passes through a printing head disposed most downstream in a transport path of the substrate, Condition 2: a transport distance until a transport speed of the substrate becomes constant, and Condition 3: a transport distance until tension of the substrate being transported becomes stable.

In a printing apparatus, a controller is configured to control a printing unit such that printing is started after a transport distance of the substrate reaches a pre-discharge transport distance, in which the pre-discharge transport distance is set to a value not less than a first longest distance, provided that a transport distance in a condition in which the transport distance is a longest distance among conditions 1, 2, and 3 provided below is the first longest distance. Condition 1: a transport distance until a region of the substrate that was nipped between a front driving roller and a nip roller passes through a printing head disposed most downstream in a transport path of the substrate, Condition 2: a transport distance until a transport speed of the substrate becomes constant, and Condition 3: a transport distance until tension of the substrate being transported becomes stable.

A thermal printer comprises a base part, a platen roller and a thermal head oppositely arranged, a pickup roller, and a gear set connecting the platen roller and the pickup roller. The base part is provided with a printing paper accommodating cavity and a pickup roller mounting frame, a plurality of printing paper sheets are disposed in the printing paper accommodating cavity, and a clutch mechanism is further provided. The clutch mechanism comprises a driving portion driven by the gear set and a driven portion for driving the pickup roller to rotate. The driving portion is disposed outside the pickup roller mounting frame, such that the impact force, which is generated by the remaining printing paper sheet that falls down when the printing paper sheet departs from the pickup roller and which is transmitted to the platen roller, can be reduced. The thermal printer is capable of providing smooth printing.

A thermal printer comprises a base part, a platen roller and a thermal head oppositely arranged, a pickup roller, and a gear set connecting the platen roller and the pickup roller. The base part is provided with a printing paper accommodating cavity and a pickup roller mounting frame, a plurality of printing paper sheets are disposed in the printing paper accommodating cavity, and a clutch mechanism is further provided. The clutch mechanism comprises a driving portion driven by the gear set and a driven portion for driving the pickup roller to rotate. The driving portion is disposed outside the pickup roller mounting frame, such that the impact force, which is generated by the remaining printing paper sheet that falls down when the printing paper sheet departs from the pickup roller and which is transmitted to the platen roller, can be reduced. The thermal printer is capable of providing smooth printing.

A media processing device includes: a platen roller configured to move a media unit along a media processing path to traverse a printhead adjacent to the platen roller; an upstream drive assembly including (i) an upstream stationary roller disposed along the media processing path on a first side of the platen roller; and (ii) an upstream movable roller adjacent to the upstream stationary roller; a downstream drive assembly including (i) a downstream stationary roller disposed along the media processing path on a second side of the platen roller; and (ii) a downstream movable roller adjacent to the downstream stationary roller; a controller configured to control a motor to move, according to a predefined sequence, the upstream movable roller and the movable roller between respective engaged and disengaged positions.

A media processing device includes: a platen roller configured to move a media unit along a media processing path to traverse a printhead adjacent to the platen roller; an upstream drive assembly including (i) an upstream stationary roller disposed along the media processing path on a first side of the platen roller; and (ii) an upstream movable roller adjacent to the upstream stationary roller; a downstream drive assembly including (i) a downstream stationary roller disposed along the media processing path on a second side of the platen roller; and (ii) a downstream movable roller adjacent to the downstream stationary roller; a controller configured to control a motor to move, according to a predefined sequence, the upstream movable roller and the movable roller between respective engaged and disengaged positions.

A registration system for a printing device and a method for controlling the same are disclosed. For example, the registration system includes at least one sensor, omni wheels, a motor coupled to each omni wheel, a translating carriage, and a processor communicatively coupled to the at least one sensor, the motors, and the translating carriage, wherein the processor calculates a desired movement to move the omni wheels and the translating carriage based on the position of the print media.