A printing system includes a print station for receiving print medium traveling along a transport pathway and an adjustable print head assembly. A medium dispenser transports the print medium on the transport pathway to the print station, and a medium width sensor detects the width of the print medium. A pressure sensor arrangement detects pressure imposed by the print head assembly at points along the width of the transport pathway when an image is printed on the print medium. A monitoring subsystem in communication with the medium width sensor and the pressure sensor arrangement calculates, based upon the detected width and the detected pressure, amounts of pressure imposed by the print head assembly along the width of the print medium.

A printer a housing, a printer cover that is rotatable relative to the housing about a first rotary axis, a thermal head configured to print on print medium, a connecting part capable of being connected to and disconnected from the thermal head, and a head cover that is rotatable about a second rotary axis being parallel to the first rotary axis, the head cover pivotally supported at the printer cover, the head cover rotating between a first position at which the head cover closes the connecting part and a second position at which the head cover does not close the connecting part to connect and disconnect the thermal head and the connecting part. The space is defined between the head cover located at the second position and the printer cover. The connecting part is exposed through the space.

A printer includes a housing, a printer cover configured to rotate between a closed position at which the printer cover closes an interior of the housing and an open position at which the printer cover opens the interior of the housing, a platen roller configured to feed print medium, a thermal head opposed to the platen roller when the printer cover is located at the closed position, and an operation member configured to connect and disconnect the thermal head, the operation member guides the print medium fed by the platen roller when the printer cover is located at the closed position.

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 thermal-transfer printer, having a case, an ink ribbon supporting member, a movable member, a head holder, and an arm, is provided. When the movable member is at a first position, a first engageable portion in the head holder and a second engageable portion in the arm are separated. When the movable member is in transition from a first position to a second position, the first engageable portion and the second engageable portion contact each other, and the arm moves in conjunction with the movable member from a third position to a fourth position. A minimum distance between the first engageable portion and the movable member when the arm is at the fourth position is shorter than a minimum distance between those when the first engageable portion and the second engageable portion contact each other while the movable member is in transition from the first position to the second position.

A label printer according to an embodiment includes a support unit that supports a roll of a backless label paper; a conveying unit that conveys and reverse conveys the backless label paper along a conveying path; a printing unit positioned on the conveying path and including a print head that prints on a surface of the backless label paper; a cutting unit, positioned on the conveying path downstream of the printing unit in a conveying direction, that cuts the backless label paper; and a control unit that controls the conveying unit to reverse convey the backless label paper in a reverse conveying direction after the cutting unit cuts the backless label paper sheet so that a tip of the backless label paper is stopped at a predetermined position downstream from the print head in the conveying direction.

A thermal head of the disclosure includes a substrate; a heat generating section disposed on the substrate; an electrode disposed on the substrate, the electrode having a connecting portion connected to the heat generating section; and a protective layer which covers the heat generating section and the connecting portion of the electrode, a part of the protective layer which is disposed on the connecting portion having a closed first void therein.

A printer includes a thermal head, a connecting part capable of being connected to and disconnected from the thermal head, and a head cover of the thermal head. The head cover moves between a first position and a second position different from the first position to connect and disconnect the thermal head and the connecting part.

A quick release print head includes a heating block, a nozzle tube and a connecting tube. The nozzle tube is inserted in the heating block. One end of the nozzle tube has a nozzle and the other end is extended with an extension tube exposed to the heating block. The connecting tube is connected with the extension tube. Whereby, the extension tube extended from the nozzle tune is exposed to the heating block so that the nozzle tube disposed near the heating block cannot be disassembled. Thus, a process of replacing components by heating a nozzle can be bypassed, and advantages of quick disassembly and easy maintenance of the print head can be achieved.

A printing device for printing tickets in public places, with an anti-paper jam system in which an optical sensor for detecting the presence of paper is arranged at a zone where a rise of the paper occurs in case of occlusion of the paper outlet mouth; before the start of a print, the paper is retracted with respect to the sensor, whereby the sensor is OFF; when the print starts, the paper advances until arriving in front of the sensor, whereby the sensor turns ON; from this moment on, if the sensor returns OFF, it means that the paper is no longer detected by the sensor, because it has been raised by an occlusion, whereby the advancing of the paper is interrupted.