Abstract: A fan duct includes a branch wall and ribs. The branch wall includes two plate-shaped portions that are continuous with each other at sides thereof on the upstream side in the air blowing direction of the fan and are inclined relative to the air blowing direction such that the two plate-shaped portions are separated from each other. A plurality of ribs that protrude from a surface of the branch wall facing the heat sink, each has a mountain-shaped plate shape with a most protruding top portion having an acute angle, each has a thickness equal to or less than an interval between fins of the heat sink, and the ribs are provided side by side in a thickness direction of the rib at an interval at which the rib is inserted between the fins.

Abstract: A fan duct includes a branch wall and ribs. The branch wall includes two plate-shaped portions that are continuous with each other at sides thereof on the upstream side in the air blowing direction of the fan and are inclined relative to the air blowing direction such that the two plate-shaped portions are separated from each other toward downstream in the air blowing direction of the fan, and the branch wall is disposed on an inner side of edges of the air outlet. The ribs protrude from a surface of the branch wall facing the heat sink, each of the ribs has a mountain-shaped plate shape with a most protruding top portion having an acute angle, and a plurality of the ribs are provided side by side in a thickness direction of the ribs.

Abstract: According to one embodiment, there is provided a label printer in which noise is less likely to be generated when a thermal head comes into contact with a backing sheet between a label and a label. In a label printer that prints, using a thermal head including a linear heating element, on a label sheet in which labels are attached on a strip-shaped backing sheet at a predetermined interval, the thermal head is configured to swing with respect to a platen roller configured to support the label sheet at a printing position, and a guide portion includes an edge portion that is substantially parallel to a surface of the thermal head having the heating element provided thereon and that is inclined with respect to the heating element is integrally provided downstream of the thermal head in a sheet conveying direction.

Abstract: A printer device includes: a pair of rack gears arranged in a staircase-like shape on a paper conveyance direction side of a continuous paper accommodated in a recessed accommodation part that accommodates a roll-shaped continuous paper and having tooth rows arranged in a first direction orthogonal to the paper conveyance direction so as to face each other; a pinion gear fitted into the tooth rows; and a pair of paper guides that are respectively provided at a position of an upper rack gear that is closer to a center side in the first direction from one end portion in the first direction and a position of a lower rack gear that is closer to the center side in the first direction from another end portion in the first direction or the other end portion. The paper guide provided on the upper rack gear is mounted to an upper mounting part extending from a back surface of the upper rack gear opposite to the tooth row to the paper conveyance direction side.

Abstract: A printer device includes: a recessed accommodation part accommodating a roll-shaped continuous paper; a pair of rack gears arranged in a staircase-like shape on a paper conveyance direction side of the continuous paper, and having tooth rows arranged in a first direction orthogonal to the paper conveyance direction so as to face each other; a pinion gear arranged between the pair of rack gears and fitting into the tooth rows of the pair of rack gears, and a pair of paper guides respectively provided at one end portion of an upper rack gear in the first direction and anther end portion of a lower rack gear in the first direction, and supporting side surfaces of the continuous paper accommodated in the accommodation part. The pair of paper guides perform an opening or closing movement in the first direction by the pair of rack gears and the pinion gear.

Abstract: A thermal printer includes: a platen having a rotatable columnar shape and configured to convey a print medium having various widths by bringing the print medium into contact with an outer peripheral portion of the platen, a central portion of the platen in a direction of a rotary shaft of the platen being taken as a reference; and a print head facing the platen, pressed by the outer peripheral portion, and configured to print by applying heat to the print medium sandwiched between the print head and the outer peripheral portion. In the outer peripheral portion of the platen, a first groove is formed in a direction intersecting the direction of the rotary shaft in each of second outer peripheral portions on both outer sides in the direction of the rotary shaft with respect to a first outer peripheral portion in contact with the print medium having a smallest width that can be conveyed.

Abstract: A top cover moves between a first position where the top cover is opened with respect to a lower cover and a second position where the top cover is closed with respect to the lower cover. A label peel-off unit moves between a third position where the label peel-off unit is opened with respect to the lower cover and a fourth position where the label peel-off unit is closed with respect to the lower cover. A lock portion engages with an operable engagement claw provided on the top cover and an engagement claw housed in the lower cover to prevent the top cover from moving from the second position. A protruding portion is a part of an exterior member of the label peel-off unit, protrudes upstream in a label conveying direction, abuts against the engagement claw, and causes the label peel-off unit to move from the fourth position to the third position by the engagement claw.

Abstract: A printer device includes a guide section, a first projecting section, and a second projecting section. The guide section is disposed to be opposed to a side surface of roll-like continuous paper and includes a guide surface for restricting movement of the continuous paper along a width direction of the continuous paper during conveyance of the continuous paper. The first projecting section is provided on the guide surface side of the guide section and rotatably holds a core section of the continuous paper. The second projecting section has an outer diameter larger than an outer diameter of the first projecting section and is movable between a supporting position where the second projecting section contains an outer circumference of the first projecting section and a storing position where the second projecting section is stored further on an inner side than the guide surface.

Abstract: A support structure for a detachable platen roller of a printer that rotates to feed paper, or the like includes a frame that holds the platen roller and a pair of bushings attached to the frame. Ends of a shaft of the platen roller are inserted into the bushings. A part of either the frame or each of the bushings located around the shaft and closer to a guide surface of the platen roller than the frame in a longitudinal direction of the platen roller forms a support part that receives a force applied by a print head pressing against the platen roller.

Abstract: A printer device includes: a pair of rack gears arranged in a staircase-like shape on a paper conveyance direction side of a continuous paper accommodated in a recessed accommodation part that accommodates a roll-shaped continuous paper and having tooth rows arranged in a first direction orthogonal to the paper conveyance direction so as to face each other; a pinion gear fitted into the tooth rows; and a pair of paper guides that are respectively provided at a position of an upper rack gear that is closer to a center side in the first direction from one end portion in the first direction and a position of a lower rack gear that is closer to the center side in the first direction from another end portion in the first direction or the other end portion. The paper guide provided on the upper rack gear is mounted to an upper mounting part extending from a back surface of the upper rack gear opposite to the tooth row to the paper conveyance direction side.

Abstract: A printer device includes: a recessed accommodation part accommodating a roll-shaped continuous paper; a pair of rack gears arranged in a staircase-like shape on a paper conveyance direction side of the continuous paper, and having tooth rows arranged in a first direction orthogonal to the paper conveyance direction so as to face each other; a pinion gear arranged between the pair of rack gears and fitting into the tooth rows of the pair of rack gears, and a pair of paper guides respectively provided at one end portion of an upper rack gear in the first direction and anther end portion of a lower rack gear in the first direction, and supporting side surfaces of the continuous paper accommodated in the accommodation part. The pair of paper guides perform an opening or closing movement in the first direction by the pair of rack gears and the pinion gear.

Abstract: A thermal printer according to an embodiment includes: a platen that has a rotatable columnar shape and that is configured to convey a print medium having various widths, with a central portion in a direction of a rotary shaft as a reference, in a manner of being in contact with an outer peripheral portion; and a print head that is oppositely disposed along the platen, that is pressed by the outer peripheral portion, and that is configured to perform printing by applying heat to the print medium. The platen includes a shaft constituting the rotary shaft and a rubber including the outer peripheral portion provided on an outer periphery of the shaft, and has a first region centered on the central portion and second regions on both outer sides in the direction of a rotary shaft with respect to the first region.

Abstract: A label printer includes an under cover, a top cover, a label peel-off unit, an interfering member supporting member, an interfering member, and an interfered member. The top cover moves between a first position where the top cover is opened and a second position where the top cover is closed with respect to the under cover. The label peel-off unit moves between a third position where the label peel-off unit is opened and a fourth position where the label peel-off unit is closed with respect to the under cover. The interfering member abuts against an exterior member of the label peel-off unit. The interfered member is a part of the exterior member of the label peel-off unit, and protrudes toward an upstream side in the label conveyance direction and is at a position where the interfered member abuts against the interfering member.

Abstract: A thermal printer includes: a platen having a rotatable columnar shape and configured to convey a print medium having various widths by bringing the print medium into contact with an outer peripheral portion of the platen, a central portion of the platen in a direction of a rotary shaft of the platen being taken as a reference; and a print head facing the platen, pressed by the outer peripheral portion, and configured to print by applying heat to the print medium sandwiched between the print head and the outer peripheral portion. In the outer peripheral portion of the platen, a first groove is formed in a direction intersecting the direction of the rotary shaft in each of second outer peripheral portions on both outer sides in the direction of the rotary shaft with respect to a first outer peripheral portion in contact with the print medium having a smallest width that can be conveyed.

Abstract: According to one embodiment, there is provided a label printer in which noise is less likely to be generated when a thermal head comes into contact with a backing sheet between a label and a label. In a label printer that prints, using a thermal head including a linear heating element, on a label sheet in which labels are attached on a strip-shaped backing sheet at a predetermined interval, the thermal head is configured to swing with respect to a platen roller configured to support the label sheet at a printing position, and a guide portion includes an edge portion that is substantially parallel to a surface of the thermal head having the heating element provided thereon and that is inclined with respect to the heating element is integrally provided downstream of the thermal head in a sheet conveying direction.

Abstract: A roll support structure is used in a printer which pulls out a sheet material from a roll on which the strip-shaped sheet material is wound and performs printing on the sheet material, where a holding portion which is inserted inside a tubular core of the roll to hold the roll rotatably includes a first portion which is in contact with an upper portion of an inner surface of the core and supports the roll from below and a second portion which is located further on a downstream side in a conveyance direction of the sheet material than a contact point between the first portion and the core and prevents movement of the oscillating roll supported by the first portion to the upstream side in a conveyance direction within a predetermined range.

Abstract: A sheet gripping mechanism includes a first sheet guide including a guide surface facing a sheet conveyance path along which a sheet is to be conveyed and a second sheet guide which faces the first sheet guide across the sheet conveyance path. The second sheet guide includes a protuberance extending toward the first sheet guide, to locations beyond the guide surface formed by the first sheet guide. When a sheet is located between the first sheet guide and the protuberance of the second sheet guide, the protuberance extends at least a portion of the sheet toward the first sheet guide to bring a part of a surface of the sheet into contact with the first sheet guide.

Abstract: A printer device includes a guide section, a first projecting section, and a second projecting section. The guide section is disposed to be opposed to a side surface of roll-like continuous paper and includes a guide surface for restricting movement of the continuous paper along a width direction of the continuous paper during conveyance of the continuous paper. The first projecting section is provided on the guide surface side of the guide section and rotatably holds a core section of the continuous paper. The second projecting section has an outer diameter larger than an outer diameter of the first projecting section and is movable between a supporting position where the second projecting section contains an outer circumference of the first projecting section and a storing position where the second projecting section is stored further on an inner side than the guide surface.

Abstract: A support structure for a detachable platen roller of a printer that rotates to feed paper, or the like includes a frame that holds the platen roller and a pair of bushings attached to the frame. Ends of a shaft of the platen roller are inserted into the bushings. A part of either the frame or each of the bushings located around the shaft and closer to a guide surface of the platen roller than the frame in a longitudinal direction of the platen roller forms a support part that receives a force applied by a print head pressing against the platen roller.

Abstract: In accordance with an embodiment, a magnetic ink reading device comprises a conveyance mechanism configured to convey a sheet-like medium printed by using magnetic ink along a conveyance path; a magnetizing mechanism configured to magnetize the magnetic ink on the medium along the conveyance path; a magnetic detection head, arranged in the vicinity of the magnetizing mechanism along the conveyance path, configured to read magnetism of the magnetized magnetic ink; a cylindrical roller member, arranged to face the magnetic detection head across the conveyance path, configured to press the medium conveyed along the conveyance path against the magnetic detection head to be capable of rotating along the surface of the medium; and a rotating shaft configured to rotatably support the roller member and contact an inner wall of the roller member at the axial center of the roller member.