A recording apparatus to record an image on a sheet includes a roller pair and a switching unit. The roller pair sandwiches the sheet between the roller pair to convey the sheet. The switching unit switches between a first state in which the roller pair sandwiches the sheet and a second state in which rollers of the roller pair are separated from each other. The switching unit includes a first movable member that is moved in a first direction so that the first state is switched to the second state, and includes a second movable member that is moved in a second direction different from the first direction so that the first state is switched to the second state.

A recording apparatus to record an image on a sheet includes a roller pair and a switching unit. The roller pair sandwiches the sheet between the roller pair to convey the sheet. The switching unit switches between a first state in which the roller pair sandwiches the sheet and a second state in which rollers of the roller pair are separated from each other. The switching unit includes a first movable member that is moved in a first direction so that the first state is switched to the second state, and includes a second movable member that is moved in a second direction different from the first direction so that the first state is switched to the second state.

An image forming apparatus includes a rotational conveying unit for conveying a recording medium by rotating about a rotational axis. A head unit includes n nozzle rows in a conveying direction perpendicular to an axial direction parallel to the rotational axis. Each of the n nozzle rows includes nozzles aligned as a nozzle row in the axial direction. Each n nozzle row is arranged at a distance of d1 to d(n−1) from a predetermined reference nozzle row. A circuit outputs a rotational amount detection signal, and a conveying amount detection signal, and generates a discharge synchronization signal based on the detected rotational amount detection signal and the detected conveying amount detection signal, then generates a nozzle row timing signal based on the distance of the d1 to d(n−1) and the discharge synchronization signal, and generates discharge data based on the discharge synchronization signal and the nozzle row timing signal.

An image forming apparatus includes a rotational conveying unit for conveying a recording medium by rotating about a rotational axis. A head unit includes n nozzle rows in a conveying direction perpendicular to an axial direction parallel to the rotational axis. Each of the n nozzle rows includes nozzles aligned as a nozzle row in the axial direction. Each n nozzle row is arranged at a distance of d1 to d(n−1) from a predetermined reference nozzle row. A circuit outputs a rotational amount detection signal, and a conveying amount detection signal, and generates a discharge synchronization signal based on the detected rotational amount detection signal and the detected conveying amount detection signal, then generates a nozzle row timing signal based on the distance of the d1 to d(n−1) and the discharge synchronization signal, and generates discharge data based on the discharge synchronization signal and the nozzle row timing signal.

According to one aspect of the present disclosure, an applying unit that can be connected to a printer and apply an adhesive to a recording sheet includes: a roller configured to transport the recording sheet that is discharged from the printer; a sensor configured to detect the bend of the recording sheet; an applying portion configured to apply the adhesive to the recording sheet; and a control device configured to adjust the rotation speed of the roller according to the value detected by the sensor.

In an example of the disclosure, power of a first light beam emitted across a web media along a length of the roller is measured utilizing a first optical transmitter and first optical receiver pair situated adjacent to a roller. Power of a second light beam emitted across a length of the roller is measured utilizing a second optical transmitter and second optical receiver pair situated adjacent to the roller. A media height non-uniformity is identified based upon of the measurement of the power of the first light beam and the measurement of the power of the second light beam.

In an example of the disclosure, power of a first light beam emitted across a web media along a length of the roller is measured utilizing a first optical transmitter and first optical receiver pair situated adjacent to a roller. Power of a second light beam emitted across a length of the roller is measured utilizing a second optical transmitter and second optical receiver pair situated adjacent to the roller. A media height non-uniformity is identified based upon of the measurement of the power of the first light beam and the measurement of the power of the second light beam.

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 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.