Abstract: A printer includes a print head; a platen roller; a frame, to which the print head or the platen roller is attached, that includes a frame body, a sidewall that is perpendicularly bent from the frame body with respect to a longitudinal direction of the platen roller, and a back surface member that is bent from the frame body in parallel to the longitudinal direction of the platen roller, the back surface member including an end portion and a support portion provided to support the sidewall from an inner side and an outer side of the sidewall, respectively, the sidewall being supported by the back surface member while being interposed between the end portion the support portion of the back surface member.

Abstract: A printer includes a print head and a platen roller. The platen roller includes multiple bearings provided one at each longitudinal end of the platen roller, a roller positioned between the bearings, and multiple flanges of which one is positioned between the roller and one of the bearings and the other is positioned between the roller and the other of the bearings in the longitudinal direction of the platen roller. The flanges have a diameter greater than the diameter of the bearings and the diameter of the roller.

Abstract: A printer includes a printer body and a lid. The printer body includes a recording paper holder configured to accommodate a roll of recording paper and a projection provided on a bottom surface of the recording paper holder that contacts the recording paper. The lid is attached to the printer body to be opened and closed relative to the printer body.

Abstract: A printer includes a printer body including a holder configured to house rolled recording paper, a cover configured to open and close the holder, a coupling mechanism that couples the cover to the printer body, and a detachment preventing mechanism configured to prevent the cover from being detached from the printer body. The coupling mechanism includes shafts formed on one of side plates of the cover and inner walls of the printer body, and shaft holes formed in another one of the side plates and the inner walls and configured to receive the shafts; and the detachment preventing mechanism includes a stopper that is disposed such that ends of the stopper contact inner surfaces of the side plates and configured to support the side plates and prevent the side plates from falling when a load is applied to the cover.

Abstract: A printer includes a body, a lid, a hook, and an engaging part. The body includes a holder configured to accommodate recording paper. The lid is attached to the body to be opened and closed relative to the body. The hook is attached to one of the body and the lid. The engaging part is attached to the other of the body and the lid. The engaging part is accommodated in a recess formed in the hook when the lid is closed relative to the body.

Abstract: A printer apparatus includes a print head, a platen roller, a recording paper guide configured to guide recording paper placed between the print head and the platen roller, and a spring configured to press the print head toward a direction of the platen roller, wherein the spring has a first part and a second part, the first part being in contact with the recording paper guide, the second part having a head contact at an end thereof that is in contact with the print head, the spring exerting a restoring force in such a direction as to narrow a space between the first part and the second part.

Abstract: A printer apparatus includes a printer main body having a platen roller and a print head to print on recording paper, a cutter unit configured to cut the recording paper, and a presenter unit connected to the cutter unit, wherein the recording paper on which the print head has printed enters the presenter unit through the cutter unit, and comes out from a discharge slot of the presenter unit, wherein the presenter unit includes a first roller and a second roller configured to convey the recording paper placed therebetween, and a flapper disposed along a transportation path of the recording paper between the cutter unit and both the first roller and the second roller, and configured to be flipped open to an outside of the presenter unit to expose the transportation path, wherein an angle at which the flapper is open is selectively set to one of a plurality of different angles.

Abstract: A printer includes a recording head; a platen roller; a first case to which the recording head is attached, the first case including a paper-feed port for feeding recording paper; a second case to which the platen roller is attached, the second case including a paper-ejection port for ejecting the recording paper; and a lock lever that is disposed in the first case and includes a support configured to rotatably support a shaft of the platen roller. The printer is configured such that the shaft of the platen roller is placed in the support when the first case and the second case are joined together.

Abstract: A printer apparatus includes a print head, a platen roller, and a frame, wherein printing is performed on recording paper situated between the print head and the platen roller, wherein a projection is formed at a side face of the print head, wherein a side face of the frame has a groove formed therein for receiving the projection, wherein the groove includes a first area constituting an entrance to the groove, a second area for positioning the projection and formed such as to extend in a direction intersecting with a direction in which the first area extends, and a slanted part formed between the first area and the second area, and wherein the slanted part is an edge of the groove and extends in a direction different from both a direction in which the projection moves in the first area and a direction in which the projection moves in the second area.

Abstract: A printer includes a print head configured to print on recording paper, a first roller, a cutter unit configured to cut the recording paper, and a presenter unit connected to the cutter unit and having a discharge slot from which the recording paper is discharged, wherein the recording paper on which the print head has printed enters the presenter unit through the cutter unit, and comes out from the discharge slot, and wherein the presenter unit includes a second roller configured to convey the recording paper, a flapper disposed along a transportation path of the recording paper between the second roller and the cutter unit and configured to be flipped open to outside the presenter unit to expose the transportation path, and a recording paper sensor disposed between the second roller and the discharge slot, wherein detection of the recording paper by the recording paper sensor causes the second roller to stop rotating, and causes the flapper to be flipped open to outside the presenter unit.

Abstract: A printer includes a body configured to accommodate recording paper, a lid attached to the body to be openable and closable relative to the body, a pressing part on the lid, a platen roller attached to the lid, a movable shaft in the body, a spring that urges the movable shaft, and a lever configured to support bearings of the platen roller with the lid being closed. The movable shaft is provided at a position corresponding to the pressing part to be movable in a longitudinal direction of the movable shaft, and is pressed by the pressing part to generate a spring force in the spring during closure of the lid.

Abstract: A printer apparatus includes a print head, a platen roller having a rod, a spring configured to press the print head toward a direction of the platen roller, a frame having in a side face thereof a platen supporting groove for supporting the rod of the platen roller, and a detection switch, wherein the platen supporting groove includes a first edge situated toward a direction of the print head and a second edge situated opposite from the first edge, and has on the second edge a projection projecting toward inside the platen supporting groove, and wherein placing the rod of the platen roller at a predetermined position at a deeper side of the platen supporting groove than the projection causes the rod of the platen roller to press the detection switch due to an urging force that is applied to the platen roller by the spring through the print head.

Abstract: A printer includes a printer body including a holder configured to house rolled recording paper, a cover configured to open and close the holder, a coupling mechanism that couples the cover to the printer body, and a detachment preventing mechanism configured to prevent the cover from being detached from the printer body. The coupling mechanism includes shafts formed on one of side plates of the cover and inner walls of the printer body, and shaft holes formed in another one of the side plates and the inner walls and configured to receive the shafts; and the detachment preventing mechanism includes a stopper that is disposed such that ends of the stopper contact inner surfaces of the side plates and configured to support the side plates and prevent the side plates from falling when a load is applied to the cover.

Abstract: A printer for printing information on a recording medium includes a guide that guides the recording medium being fed and includes multiple holes, a sensor for detecting the recording medium, and a board that includes multiple terminals. The sensor is mounted on at least one of the terminals such that the sensor is exposed through one of the holes.

Abstract: A printer includes a print head configured to print on recording paper, a first roller, a cutter unit configured to cut the recording paper, and a presenter unit connected to the cutter unit and having a discharge slot from which the recording paper is discharged, wherein the recording paper on which the print head has printed enters the presenter unit through the cutter unit, and comes out from the discharge slot, and wherein the presenter unit includes a second roller configured to convey the recording paper, a flapper disposed along a transportation path of the recording paper between the second roller and the cutter unit and configured to be flipped open to outside the presenter unit to expose the transportation path, and a recording paper sensor disposed between the second roller and the discharge slot, wherein detection of the recording paper by the recording paper sensor causes the second roller to stop rotating, and causes the flapper to be flipped open to outside the presenter unit.

Abstract: A printer includes a body, a lid pivotably attached to the body, a platen roller attached to the lid, and a lock lever. The body includes a print head and a holder to accommodate a roll of recording sheet. The lock lever supports a bearing of the platen roller when the lid is closed. The printer further includes a first plate and a second plate arranged on the lid in the widthwise direction of the printer, and a movable button provided on the lid. When the button is moved to slide the first and second plates toward each other, the outer end of each of the first and second plates in the widthwise direction moves inward to be positioned inside the outer frame of the holder to allow the closure of the lid.

Abstract: A printer includes a printer mechanism unit including a frame and a print head, a platen unit including a platen roller, a detection switch configured to detect connecting of the platen unit to the printer mechanism unit, and a switch holder having the detection switch attached thereto and covering part of the detection switch, wherein the switch holder is mounted to one of the frame and the platen unit.

Abstract: A printer includes a print head and a platen roller. The platen roller includes multiple bearings provided one at each longitudinal end of the platen roller, a roller positioned between the bearings, and multiple flanges of which one is positioned between the roller and one of the bearings and the other is positioned between the roller and the other of the bearings in the longitudinal direction of the platen roller. The flanges have a diameter greater than the diameter of the bearings and the diameter of the roller.

Abstract: A printer includes a print head; a platen roller; a frame, to which the print head or the platen roller is attached, that includes a frame body, a sidewall that is perpendicularly bent from the frame body with respect to a longitudinal direction of the platen roller, and a back surface member that is bent from the frame body in parallel to the longitudinal direction of the platen roller, the back surface member including an end portion and a support portion provided to support the sidewall from an inner side and an outer side of the sidewall, respectively, the sidewall being supported by the back surface member while being interposed between the end portion the support portion of the back surface member.

Abstract: A printer including a printing part which prints on a recording paper; a cutter part which cuts the recording paper; and a conveying part which includes a conveying route having a curving shape and through which the recording paper conveyed through the cutter part is conveyed; a conveying route cover which is attached to the conveying part and covers a portion of the conveying route; and a flapper which is provided at a curved portion of the conveying route, has a curved shape, and is rotatably attached to the conveying route cover so as to rotatably open or close relative to a main body of the printer, wherein the conveying route cover and the flapper are movable together so as to separate from or contact the main body.