A thermal printer includes a head block having a head support plate and a thermal head fixed to the head support plate, a platen roller brought into abutment against the thermal head through intermediation of recording paper, a wiring board drawn from the thermal head, a frame supporting the platen roller and the head support plate, and a recording paper sensor mounted to the wiring board and detecting the recording paper. The frame includes a guide wall arranged on upstream of the thermal head in a conveyance direction of the recording paper, the guide wall guiding the recording paper to the thermal head. The head block including a sensor holder mounted thereto, the sensor holder holding the recording paper sensor at a portion which is located between the thermal head and the guide wall in the conveyance direction.

A thermal printer includes a head block having a head support plate and a thermal head fixed to the head support plate, a platen roller brought into abutment against the thermal head through intermediation of recording paper, a wiring board drawn from the thermal head, a frame supporting the platen roller and the head support plate, and a recording paper sensor mounted to the wiring board and detecting the recording paper. The frame includes a guide wall arranged on upstream of the thermal head in a conveyance direction of the recording paper, the guide wall guiding the recording paper to the thermal head. The head block including a sensor holder mounted thereto, the sensor holder holding the recording paper sensor at a portion which is located between the thermal head and the guide wall in the conveyance direction.

Systems, devices, and related methods for shaping near field interrogation signals are discussed herein. An example spindle supported near field communication (NFC) device includes a spindle configured to mount to a mounting surface, the spindle having an axis of rotation; a beam shaping NFC device including: a ferromagnetic core portion coaxial with the spindle; a coil disposed around the core portion, the coil to generate a near field interrogation signal; a first ferromagnetic flange portion to direct the near field interrogation signal in directions extending radially from the axis and to restrict the near field interrogation signal from extending in a first axial direction associated with the axis; and a second ferromagnetic flange portion to direct the near field interrogation signal in the directions extending radially from the axis and to restrict the near field interrogation signal from extending in a second axial direction associated with the axis.

Systems, devices, and related methods for shaping near field interrogation signals are discussed herein. An example spindle supported near field communication (NFC) device includes a spindle configured to mount to a mounting surface, the spindle having an axis of rotation; a beam shaping NFC device including: a ferromagnetic core portion coaxial with the spindle; a coil disposed around the core portion, the coil to generate a near field interrogation signal; a first ferromagnetic flange portion to direct the near field interrogation signal in directions extending radially from the axis and to restrict the near field interrogation signal from extending in a first axial direction associated with the axis; and a second ferromagnetic flange portion to direct the near field interrogation signal in the directions extending radially from the axis and to restrict the near field interrogation signal from extending in a second axial direction associated with the axis.

Provided is a printer that can appropriately handle a paper (media) wound into a roll with one end of the paper affixed to a core, when the trailing end of the paper is detected, the trailing end of the paper being attached to the winding core in multiple ways. The printer has: a roll paper support that supports the core of a roll of paper; a roll driver that turns the core and delivers the paper; a conveyance device that conveys the delivered paper; a tension detection switch that outputs a first detection value when tension produced on the paper delivered from the roll is greater than or equal to a threshold; and a controller that drives the roll driver in the direction delivering the paper when the output of the tension detection switch changes to the first detection value in response to rotation of the core.

Provided is a printer that can appropriately handle a paper (media) wound into a roll with one end of the paper affixed to a core, when the trailing end of the paper is detected, the trailing end of the paper being attached to the winding core in multiple ways. The printer has: a roll paper support that supports the core of a roll of paper; a roll driver that turns the core and delivers the paper; a conveyance device that conveys the delivered paper; a tension detection switch that outputs a first detection value when tension produced on the paper delivered from the roll is greater than or equal to a threshold; and a controller that drives the roll driver in the direction delivering the paper when the output of the tension detection switch changes to the first detection value in response to rotation of the core.

Technology enabling correctly detecting that paper has been delivered from a paper roll to the trailing end A printer has an inkjet head; a roll paper support; a delivery motor configured to rotate the roll paper supported by the roll paper support; a guide member configured to guide roll paper conveyed from the paper roll; and a detection switch disposed to a position where it detects the conveyed roll paper when the delivery point on the circumference of the paper roll moves to the part of the circumference of the roll on the same side of an imaginary line as the guide member; the delivery point being from which the conveyed roil paper separates from the roil when the paper roll turns; and the imaginary line being tangent to the guide member and passing through the center of the roll.

Technology enabling correctly detecting that paper has been delivered from a paper roll to the trailing end A printer has an inkjet head; a roll paper support; a delivery motor configured to rotate the roll paper supported by the roll paper support; a guide member configured to guide roll paper conveyed from the paper roll; and a detection switch disposed to a position where it detects the conveyed roll paper when the delivery point on the circumference of the paper roll moves to the part of the circumference of the roll on the same side of an imaginary line as the guide member; the delivery point being from which the conveyed roil paper separates from the roil when the paper roll turns; and the imaginary line being tangent to the guide member and passing through the center of the roll.

According to an embodiment, a printer includes: a pair of support shafts that are supported by the casing, inserted into an inner periphery of an ink ribbon wound into a cylinder, and support the ink ribbon hung around a printing device. The printer further includes a driven shaft that is connected to one end of each of the support shafts so as to be movable along a longitudinal direction of the corresponding support shaft. The printer further includes a transmitter that is driven to rotate to transmits rotation to the driven shaft pressed by biasing of the biasing member.

According to an embodiment, a printer includes: a pair of support shafts that are supported by the casing, inserted into an inner periphery of an ink ribbon wound into a cylinder, and support the ink ribbon hung around a printing device. The printer further includes a driven shaft that is connected to one end of each of the support shafts so as to be movable along a longitudinal direction of the corresponding support shaft. The printer further includes a transmitter that is driven to rotate to transmits rotation to the driven shaft pressed by biasing of the biasing member.