JP-7855544-B2 - Printer and sheet support device

JP7855544B2JP 7855544 B2JP7855544 B2JP 7855544B2JP-7855544-B2

Inventors

小林岳史

Assignees

東芝テック株式会社

Dates

Publication Date: 20260508
Application Date: 20230328

Claims (6)

A holding part that holds the rolled-up strip of paper, A printing unit that prints on the paper pulled out from the holding unit, A housing that incorporates the holding part and the printing part, A pair of support shafts, which are supported by the housing and inserted into the inner circumference of the cylindrically wound ink ribbon, and which support the ink ribbon that is wrapped around the printing section, A driven shaft is connected to one end of the support shaft so as to be movable along the longitudinal direction of the support shaft, A biasing member housed inside the support shaft and biasing the driven shaft away from the support shaft, A transmission unit is provided in the housing and is rotationally driven, and transmits rotation to the driven shaft which is pressed against by the biasing force of the biasing member, An attachment that is long along the longitudinal direction of the support shaft, and is detachably attached to the support shaft by a structure in which the direction of action during attachment and detachment differs at both ends of the support shaft, covering the outer circumference of the support shaft, having a bent shape with a cross section that intersects the longitudinal direction being approximately U-shaped, and which is in close contact with the inner circumference of the ink ribbon at the approximately U-shaped bent portion and at both ends of the approximately U-shaped, A printer equipped with the following features.
The aforementioned attachment is The attachment has a protruding first mounting portion that extends from one end of the attachment in the longitudinal direction of the attachment, The other end of the attachment has a pair of protruding second mounting portions that extend outwards from both ends of the substantially U-shaped section, moving toward each other. The support shaft has a disc-shaped portion at one end that is integrally provided with the support shaft, The disc-shaped portion has a mounting hole into which the first mounting portion is inserted. The printer according to claim 1 , wherein the support shaft has a pair of recessed engaging portions at its other end, into which the pair of second mounting portions engage .
The support shaft is equipped with a pressure contact member that presses against the inner circumference of the ink ribbon, The printer according to claim 2 , wherein the attachment covers the support shaft from the side without the pressure contact member.
The printer according to claim 3, wherein the attachment is provided with a pressure-contacting member on the outer circumference of the bent portion that presses against the inner circumference of the ink ribbon.
A support shaft is inserted into the inner circumference of a cylindrical, rolled-up strip of sheet to support the sheet, A driven shaft is connected to one end of the support shaft so as to be movable along the longitudinal direction of the support shaft, A biasing member housed inside the support shaft and biasing the driven shaft away from the support shaft, An attachment that is long along the longitudinal direction of the support shaft, and is detachably attached to the support shaft by a structure in which the direction of action during attachment and detachment differs at both ends of the support shaft, covering the outer circumference of the support shaft , having a bent shape with a cross section that intersects the longitudinal direction being approximately U-shaped, and which is in close contact with the inner circumference of the sheet at the approximately U-shaped bent portion and at both ends of the approximately U-shaped , A seat support device equipped with the following features.
The support shaft includes a pressure contact member that presses against the inner circumference of the sheet, The sheet support device according to claim 5 , wherein the attachment covers the support shaft from the side without the pressure contact member.

Description

Embodiments of the present invention relate to a printer and a sheet support device. Conventionally, printers that use ink ribbons for printing (for example, Patent Document 1) are equipped with a pair of support shafts that support the ink ribbon. The support shafts are inserted into the cylindrical inner circumference of the wound ink ribbon and are at least partially in close contact with the inner circumference. As a result, the ink ribbon is fed out (supplied) and rewound, or wound up and rewound, by the rotational drive of the support shafts. In printers, further space savings and miniaturization are desired, and to achieve this, it is necessary to reconsider the various internal components and materials, including their arrangement and structure. Furthermore, ink ribbons are sold in a wound state, and there are multiple standards for the inner circumference diameter (inner diameter) depending on the manufacturer. Therefore, it is desirable that the support shaft, which needs to be in close contact with the inner circumference, be compatible with multiple standards. However, depending on the standard, the inner diameter can vary significantly, and in such cases, conventional support shafts that allow for slight increases or decreases in the corresponding diameter, such as those disclosed in Patent Document 1, are often insufficient. Figure 1 is a perspective view showing an example of the external appearance of a printer according to an embodiment.Figure 2 is a perspective view showing an example of a printer according to the embodiment in an open state.Figure 3 is a schematic side view showing an example of the structure of a printer according to the embodiment.Figure 4 is a front view showing the mounting state of the support shaft to the upper case.Figure 5 is a perspective view showing the external appearance of the transmission unit.Figure 6 is a perspective view showing the external appearance of the support shaft.Figure 7 is a perspective view showing a cross-sectional view of the connection structure between the transmission section and the support shaft.Figure 8 is a perspective view showing the attachment structure for mounting the attachment to the support shaft.Figure 9 shows the external appearance of the support shaft to which the attachment is mounted, and the hooking structure of the attachment to the rotating knob in the A-A section.Figure 10 shows the external appearance of the support shaft with the attachment attached. The embodiments will be described using the drawings. Figure 1 is a perspective view showing an example of the external appearance of the printer 1 according to the embodiment. The printer 1 comprises a housing 2, a display and operation unit 3, an open/close button 4, and a paper output slot 5. The side on which the paper output slot 5 is located is the front side of the printer 1, and the side opposite to the side on which the paper output slot 5 is located is the rear side. The housing 2 is a box-shaped container comprising an upper case 21 and a lower case 22. The upper case 21 has a downward-facing opening, and the lower case 22 has an upward-facing opening. The upper case 21 is rotatably attached to the lower case 22 by a hinge 20 on its rear side. This allows the upper case 21 and the lower case 22 to be rotatably connected, and the rotation opens and closes their respective openings. The hinge 20 rotatably connects the upper case 21 and the lower case 22 on the rear side. The hinge 20 is equipped with a biasing member, such as a torsion spring, on one side in the width direction of the lower case 22. The biasing member biases the upper case 21 in the direction that opens the lower case 22, thereby slowing down the movement of the upper case 21 when closing the lower case 22. The display and operation unit 3 is located on the upper surface of the upper case 21. The display and operation unit 3 receives input for various operations and displays various information. The open/close button 4 is located on the front side of the side of the upper case 21. When the open/close button 4 is pressed, the lock state of the structure that holds the upper case 21 in the closed position for the lower case 22 is released, and the upper case 21 lifts up according to the biasing force of the biasing member, opening the housing 2. A portion of the front (front) of the lower case 22 is formed by the front cover 23. The front cover 23 is an example of a cover portion. Furthermore, the other parts of the housing 2, excluding the front cover 23, are an example of the main body portion. The paper output slot 5 is an opening for issuing (discharging) printed materials such as receipts (printed paper 61), and is located between the upper end of the front cover 23 and the lower front end of the upper case 21. Figure 2 is a perspective view showing an example of the printer 1 according to the embodiment in an open state. Figure 3 is a schematic side view showing an example of the structu