A thermal printer module includes: a housing; a cover; a platen roller provided to the cover; a support frame having a groove configured to receive a shaft of the platen roller; a lock arm configured to hold down, by a platen roller engagement portion, the shaft of the platen roller inserted into the groove; a biasing member configured to apply a biasing force to the lock arm; and a printing head. Wherein, when viewed in a direction extending along an axis of the shaft, the platen roller engagement portion and a tangential line of a track obtained when the axis of the shaft moves along with an opening operation of the cover form an intersection angleAB in a closing direction of the lock arm, and the intersection angle AB satisfies a relation of 90AB110. Wherein the platen roller engagement portion and a tangential line of a track obtained when a contact point between the shaft and the platen roller engagement portion pivots in an unlocking direction of the lock arm form an intersection angle BC in the closing direction of the lock arm, and the intersection angle BC satisfies a relation of 0BC10.

There is provided a printing apparatus including: a thermal head including heating elements arranged in a first direction; a shaft extending in a second direction; a first engaging part; a head holder; an insertion part; a shaft holder holding the shaft; a second engaging part engageable with the first engaging part so that the shaft does not come off from the shaft holder; a guide configured to guide the shaft holder movably between engaging and non-engaging positions; a fixing member; and a fixing member-holder. The fixing member fixes the shaft holder to the head holder in a case that the shaft holder is located at the engaging position. The fixing member-holder holds the fixing member so that the fixing member does not come off from the shaft holder in a case that the shaft holder is located at the non-engaging position.

A cover is coupled to a main body casing in manner enabling rotation of the cover. A pop-up mechanism is provided that when locking by a locking mechanism that fixes the cover at a closed position in a releasable manner is released, rotates the cover from the closed position to an open position by a biasing of first contact members in a direction so that the first contact members push second contact members that are respectively disposed at both ends of the cover, the first contact members being connected to each other and respectively disposed at both ends of the main body casing. Thus, the second contact members are pushed while a positional relationship of the first contact members is maintained to be constant.

A printer includes two supporters disposed at a storage section, an adjuster movably supporting at least a specific supporter of the two supporters, a protrusion protruding upward from a second section, the second section being an upper portion of the specific supporter, a locking section locking a first section in a position to which the first section is moved via the adjuster, the first section being a lower portion of the specific supporter, and an engagement section having elastically-deformable engagement pieces arranged at intervals in a particular direction intersecting a vertical direction, the protrusion being configured to, when the cover is closed, engage with at least a specific engagement piece from beneath, the specific engagement piece being maintained elastically deformed upward.

Provided herein is a printing apparatus including a printhead movable between a first position and a second position. The printhead includes a first substrate and a second substrate. The first substrate and the second substrate define at least a first burn line and a second burn line, respectively, of heating elements disposed adjacent to a first edge and a second edge, respectively of the printhead. A printhead bracket receives the printhead in one of the first position or the second position. In the first position, the heating elements of the first burn line perform a printing operation and the printhead bracket is configured to preclude operation of the heating elements of the second burn line. In the second position, the heating elements of the second burn line perform a printing operation, and the printhead bracket is configured to preclude operation of the heating elements of the first burn line.

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.

Provided herein is a printing apparatus including a printhead movable between a first position and a second position. The printhead includes a first substrate and a second substrate. The first substrate and the second substrate define at least a first burn line and a second burn line, respectively, of heating elements disposed adjacent to a first edge and a second edge, respectively of the printhead. A printhead bracket receives the printhead in one of the first position or the second position. In the first position, the heating elements of the first burn line perform a printing operation and the printhead bracket is configured to preclude operation of the heating elements of the second burn line. In the second position, the heating elements of the second burn line perform a printing operation, and the printhead bracket is configured to preclude operation of the heating elements of the first burn line.

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 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.

Provided is a photo printer and a method for manufacturing the same that are capable of allowing a gap formed between a head and a platen roller to be kept constantly. The photo printer includes: a frame having both side walls; a paper accommodating part disposed between both side walls of the frame to accommodate the paper therein; a pickup roller located protrudingly from a bottom surface of the paper accommodating part to forward feed the paper accommodated in the paper accommodating part; a platen roller coupled to the frame to discharge the paper fed from the pickup roller forward; a head disposed above the platen roller to apply the heat to the paper; and a pair of brackets each having one side swingably coupled to the head and the other side hinge-coupled to the frame.