A printing apparatus includes a printing part, an accommodating portion, a cover, a shaft portion, and an engaging portion. The cover is movable between a first position to close the accommodating portion and a second position to open the accommodating portion. The shaft portion extends in a first direction. The holding portion includes a first rotating member connected to the shaft portion and configured to rotate between a third position and a fourth position about the shaft portion. The first rotating member has a first part including a restricting portion configured to restrict the rotation of the first rotating member. The first rotating member has a second part having a thickness in the first direction greater than that of the first part.

A recording apparatus includes: a first transporting path which passes through a recording portion that performs recording on a medium fed from a medium accommodation cassette that accommodates the medium, in a straight line shape; a second transporting path which is connected to the first transporting path, and transports and switches back the medium in a reverse direction; a third transporting path which is connected to the second transporting path and allows the medium to bypass an upper side of the recording portion, to be reversed, and to be converged in the first transporting path; a fourth transporting path which is connected to a downstream of the first transporting path, reverses and discharges the medium, along an outer side of the second transporting path; and a medium receiving tray which receives the medium discharged from the fourth transporting path.

A mobile printer includes an ultrasound sensor to sense a set of ultrasonically-sensed positional data points of a print nozzle of the printer, at least one optical sensor to sense a set of optically-sensed positional data points of the print nozzle, and a processor. The processor is to apply a correction function on the set of ultrasonically-sensed positional data points and on the set of optically-sensed positional data points to provide a set of corrected positional data points of the print nozzle and is to cause the print nozzle to deposit according to a print request and according to the set of corrected positional data points.

A printer according to an embodiment includes: a printer body including a supplying part that rotatably holds a roll-shaped sheet member; an opening and closing cover configured to open and close with respect to the printer body; a thermal head disposed on the printer body, the thermal head configured to print on the sheet member; a platen roller disposed on the opening and closing cover, the platen roller positioned at a location opposite to the thermal head and feeding the sheet member in a closed configuration; and a platen roller holding mechanism configured to attachably and detachably secure the platen roller to the opening and closing cover. The platen roller holding mechanism includes a label roll supporter that rotatably guides the roll-shaped sheet member in the supplying part. The label roll supporter includes a cross-sectional arc-shaped surface.

A mobile printer includes a roll body accommodating portion accommodating a roll body on which recording paper is wound, a print head performing printing on the recording paper, a transport unit pulling out the recording paper from the roll body and transporting the recording paper, a power supply unit supplying a drive voltage signal to the print head and the transport unit, a housing covering the roll body accommodating portion, the print head, the transport unit, and the power supply unit, and a static electricity removal film, in which the power supply unit has a power receiving module receiving a signal based on a power supply voltage signal from an outside by a non-contact power supply, and at least a part of the static electricity removal film is located between the roll body accommodating portion and the power receiving module and adjacent to the power receiving module.

A mobile printer includes: a roll body accommodating portion including a first partition wall and accommodating a roll body on which a recording paper is wound; a print head; a transport unit; a power supply unit, and supplying a drive voltage signal to the print head and the transport unit; and a housing including a power supply surface to which the power receiving module is fixed, and covering the roll body accommodating portion, the print head, the transport unit, and the power supply unit, in which at least a part of the first partition wall is located between the power receiving module and the roll body accommodating portion along one direction from the power receiving module to the roll body accommodating portion, and a thickness of the first partition wall along the one direction is larger than a thickness of the power supply surface along the one direction.

An embodiment of a printer according to the present invention includes: a container configured to contain a roll body into which a belt-shaped print medium is wound; a frame including a first opening, the frame arranged to be a portion of the container; and a body case provided outside the frame and arranged to be a portion of a bottom surface of the container, the body case including a first protrusion part protruding toward the first opening.

A printing device includes: a main body including an accommodating portion configured to accommodate a printing medium; a cover displaceable between an open position where the accommodation portion is opened and a closed position where the accommodation portion is closed; a platen roller attached to the cover and rotatably supported by the cover; a peeling roller attached to the cover and supported so as to be rotatable about an axis parallel to a longitudinal direction of the platen roller; and a switching mechanism attached to the cover and configured to switch the peeling roller between a contact position where the peeling roller comes into contact with the platen roller and a non-contact position where the peeling roller is away from the platen roller in conjunction with displacement of the cover.

A liquid jetting apparatus includes a casing, a tank formed with a liquid storage chamber which stores liquid, an inlet which allows the liquid to be poured into the liquid storage chamber, and a liquid outflow channel which allows the liquid to flow out from the liquid storage chamber, a conveying mechanism which conveys a recording medium along a conveying path extending in a front-rear direction, a carriage which moves in a left-right direction, and a head mounted on the carriage and having a nozzle which jets the liquid onto the recording medium conveyed by the conveying mechanism. The tank, the conveying path, and the carriage are arranged inside the casing, the tank is arranged outside the conveying path in the left-right direction, and at least a part of the tank is arranged inside both ends of a movement area of the carriage in the left-right direction.

A liquid ejecting apparatus includes a first transport roller, and a second transport roller which transports a medium; and a liquid ejecting head which includes a plurality of nozzle openings, and ejects liquid toward the medium which is transported, a pressure generation unit which causes a change in pressure in liquid in a flow path, and a wiring board of which one face is arranged so as to face a direction in which the liquid is ejected, and is electrically connected to the pressure generation unit, in which the wiring board is arranged between the first transport roller and the second transport roller, and is arranged at a position at which the wiring board does not overlap with the first transport roller and the second transport roller and the first transport roller or the second transport roller is arranged at a position at which the roller overlaps with the liquid ejecting head.