JP6563179B2 - Printer device and near-end detection method of recording paper of printer device - Google Patents

Description

  The present invention relates to a printer apparatus and a recording paper near-end detection method of the printer apparatus.

  Printers that issue receipts and the like are widely used for applications such as cash registers (registers in shops), ATMs (Automated Teller Machines) and CDs (Cash dispensers) in banks and the like. A printer that issues such receipts prints on the recording paper with a thermal head or the like while conveying the thermal paper that becomes the recording paper, conveys the recording paper to a predetermined length, and then uses a cutter to obtain the predetermined length. This cuts the recording paper.

  In such a printer apparatus, for example, a printer main body and a lid supported in a rotatable state on the printer main body are provided. By opening the lid, the printer main body has a roll shape. Recording paper wound around can be installed. In this case, for example, the thermal head or the like is installed in the printer body, the platen roller is installed in the lid, and the recording paper is sandwiched between the thermal head and the platen roller by closing the lid. It is. In this way, printing is performed on the recording paper with the thermal head or the like with the recording paper sandwiched between the thermal head and the platen roller.

  In the printer device, roll paper wound in a roll shape is used as the recording paper, and the recording paper wound in a roll shape is installed in a recording paper holder in the printer device. Conventionally, a recording paper wound in a roll is generally installed through a shaft in an opening at the center of the recording paper wound in a roll in a recording paper holder. In order to facilitate replenishment, a drop-type printer device that is installed in a recording paper holder as it is without passing a shaft through the opening at the center of the recording paper wound in a roll is becoming widespread.

JP 2009-96595 A

  However, in the drop-in method, the smaller the diameter of the recording paper wound in a roll shape, the easier it is to move freely in the recording paper holder, and it is detected that the recording paper is becoming scarce and disappearing. Because of near end detection could not be done.

  Therefore, there is a demand for a printer device that can detect the near end of the recording paper in the printer device in which the recording paper wound in a roll shape by the dropping method is installed.

According to one aspect of the present embodiment, the printer has a printer body and a lid attached to the printer body so as to be openable and closable. The printer body is wound in a roll shape. A recording paper holder for storing the recording paper is provided, and a protrusion is provided on the bottom surface inside the recording paper holder, the bottom surface is a flat surface, and the protrusion protrudes from the bottom surface. The protrusion is formed at a position where the recording paper contacts the bottom surface between the protrusion and the lid when the recording paper has a predetermined radius or less ; A first recording paper sensor for detecting the presence or absence of the recording paper is provided between the protrusions.

  According to the present invention, it is possible to detect the near end of the recording paper in the printer apparatus in which the recording paper wound in a roll shape by the dropping method is installed.

The perspective view of the state which the cover part of the printer apparatus in this Embodiment is open The perspective view in the state where the lid part of the printer device in this embodiment is closed Sectional drawing of the state in which the cover part of the printer apparatus in this Embodiment is closed Explanatory drawing (1) of the near end detection of the recording paper of the printer apparatus in this Embodiment Explanatory drawing (2) of the near end detection of the recording paper of the printer apparatus in this Embodiment Explanatory drawing (3) of the near end detection of the recording paper of the printer apparatus in this embodiment Explanatory drawing (4) of the near-end detection of the recording paper of the printer apparatus in this Embodiment Explanatory drawing (5) of the near end detection of the recording paper of the printer apparatus in this Embodiment Explanatory drawing (6) of the near end detection of the recording paper of the printer apparatus in this Embodiment Explanatory drawing (7) of the near end detection of the recording paper of the printer apparatus in this Embodiment Explanatory drawing of the state of the first, second and third recording paper sensors and the recording paper

  The form for implementing this invention is demonstrated below. In addition, about the same member etc., the same code | symbol is attached | subjected and description is abbreviate | omitted.

(Printer device)
The printer apparatus according to the present embodiment will be described with reference to FIGS. 1 is a perspective view of the printer device according to the present embodiment in a state in which the lid portion is open, FIG. 2 is a perspective view in a state in which the lid portion is closed, and FIG. It is sectional drawing of the state in which the part is closed.

  The printer apparatus according to the present embodiment includes a printer main body 10 and a lid 20 attached to the printer main body 10. The lid 20 is attached to the printer body 10 so as to be rotatable about a shaft (not shown). In other words, the printer apparatus according to the present embodiment has a lid portion 20 that is attached to the printer main body portion 10 so as to be opened and closed. The printer main body 10 is provided with a recording paper holder 11, and is formed so that a recording paper 100 wound in a roll shape can be installed and stored inside the recording paper holder 11. The recording paper 100 wound in a roll shape used in the printer apparatus according to the present embodiment is a thermal paper.

  The printer body 10 is provided with a control circuit board 12, motors 13 and 14, a thermal head 30 that is a recording head for printing on the recording paper 100, and a fixed blade 41. The control circuit board 12 is for controlling the printer apparatus in the present embodiment, and the motors 13 and 14 are for conveying the recording paper 100 and for cutting the recording paper at the cutter unit. It is.

  The lid 20 is provided with an open lever 21, a movable blade 42, and a platen roller 50 for opening the lid 20. The open lever 21 is installed so that the groove part 22 provided in the surface of the cover part 20 can be moved to an up-down direction.

  In the present embodiment, a cutter unit for cutting recording paper is formed by a fixed blade 41 provided in the printer main body 10 and a movable blade 42 provided in the lid unit 20. Moves to the side where the fixed blade 41 is provided, whereby the recording paper 100 existing between the fixed blade 41 and the movable blade 42 can be cut.

  Further, the printer main body 10 is provided with a lock lever 15 for removing the platen roller 50 pressed against the thermal head 30. By pressing the lock lever 15 downward, the platen roller 50 is removed from the thermal head 30. 50 is separated and the platen roller 50 can be removed.

  That is, in the printer device according to the present embodiment, the open lever 21 provided on the lid 20 is slid downward to push the lock lever 15 downward to remove the platen roller 50 and to remove the lid 20. Can be opened.

  In the present embodiment, when the platen roller 50 is removed by operating the lock lever 15, the platen roller is moved by a spring (not shown) provided in the printer mechanism including the thermal head 30, the platen roller 50, and the like. 50 is formed so as to pop out. Therefore, in the present embodiment, the force by the spring, that is, the force that works in the direction in which the platen roller 50 protrudes by the spring is applied as part of the force when opening the lid portion 20.

  When the recording paper 100 is installed in the printer apparatus according to the present embodiment, the recording paper 100 wound in a roll shape is installed inside the recording paper holder 11 of the printer main body 10 and the lid 20 is closed. As a result, the recording paper wound in a roll shape is set in the printer device. Further, the printer apparatus according to the present embodiment may have a structure in which the platen roller 50 is provided in the printer body 10 and the thermal head 30 is provided in the lid 20. For example, the lid 20 is opened when the recording paper 100 installed in the printer main body 10 is used up or when the recording paper 100 is replaced.

  As shown in FIG. 3, in the printer device according to the present embodiment, a protrusion 110 is provided inside the recording paper holder 11. A first recording paper sensor 121, a second recording paper sensor 122, and a third recording paper sensor 123 are provided on the side surface of the recording paper holder 11 around the protrusion 110.

  The protruding portion 110 is in the state shown in FIG. 3 on the bottom surface 11a of the recording paper holder 11, that is, the surface that comes into contact with the recording paper 100 when the recording paper 100 wound in a roll shape is installed on the recording paper holder 11. And the lid portion 20. The protrusion 110 does not come into contact with the recording paper 100 when the diameter of the recording paper 100 wound in a roll shape is the largest, that is, when a new roll-shaped recording paper 100 is placed in the recording paper holder 11. Formed in position. The protrusion 110 is formed at a position where the length of the bottom surface 11a of the recording paper holder 11 up to the lid 20 is at least shorter than the radius in the initial state of the recording paper 100 wound in a roll shape.

  The first recording paper sensor 121 is installed on the side surface of the recording paper holder 11 between the protrusion 110 and the lid 20. The second recording paper sensor 122 is installed on the side surface of the recording paper holder 11 at a position on the vertical line of the protrusion 110. The third recording paper sensor 123 is opposite to the side on which the lid 20 of the recording paper holder 11 is provided, that is, the protrusion 110 is positioned between the third recording paper sensor 123 and the lid 20. In this way, it is installed on the side surface of the recording paper holder 11.

  In this embodiment, an optical sensor, for example, a reflective optical sensor is used for the first recording paper sensor 121, the second recording paper sensor 122, and the third recording paper sensor 123. A mechanical sensor may be used.

(Near-end detection of recording paper)
A near-end detection method for the recording paper 100 of the printer apparatus according to the present embodiment will be described with reference to FIGS. In the present embodiment, with reference to a straight line along the direction of gravity in the protrusion 110, that is, a vertical line L indicated by a one-dot chain line in FIG. A region between the vertical line L is defined as a first region A1, and a region between the vertical line L on the side opposite to the side where the lid is provided and the inner surface of the recording paper holder 11 is defined as a second region. Let A2. That is, the region closer to the lid than the vertical line L (left side of the vertical line L in FIG. 4) is defined as the first region A1, and the side opposite to the lid (vertical line L in FIG. The area on the right side is defined as a second area A2. In the bottom surface 11a of the recording paper holder 11, the distance from the inner wall surface of the lid to the center of the protrusion 110 will be described as P. 4 to 10 conceptually show the positional relationship of each member and the like in order to explain the positional relationship of the recording paper 100 for convenience.

  As shown in FIG. 4, in a state where the recording paper 100 wound in a roll shape is installed in the recording paper holder 11, the recording paper 100 occupies substantially the entire space in the recording paper holder 11. . In this state, since the radius r1 of the recording paper 100 is larger than the distance P, the center c1 of the recording paper 100 is located in the second area A2, and the recording paper 100 is in the second area A2. Is in contact with the bottom surface 11a. Accordingly, the recording paper 100 is detected by the second recording paper sensor 122 and the third recording paper sensor 123, but not detected by the first recording paper sensor 121.

  Next, when printing is performed in the printer apparatus according to the present embodiment and the recording paper 100 is used, the radius of the recording paper 100 is reduced to r2 as shown in FIG. However, even in the state of FIG. 5, since the radius r2 of the recording paper 100 is larger than the distance P, the center c2 of the recording paper 100 is located in the second area A2, and the recording paper 100 is in the second area A2. Are in contact with the bottom surface 11 a of the recording paper holder 11. Therefore, the recording paper 100 is detected by the second recording paper sensor 122 and the third recording paper sensor 123, but not detected by the first recording paper sensor 121.

  Next, when the recording paper 100 is used after further printing from the state of FIG. 5, the radius of the recording paper 100 is reduced to r3 as shown in FIG. However, even in this state, since the radius r3 of the recording paper 100 is slightly larger than the distance P, the center c3 of the recording paper 100 is located in the second area A2, and the recording paper 100 is in the second area A2. It is in contact with the bottom surface 11 a of the recording paper holder 11. Therefore, the recording paper 100 is detected by the second recording paper sensor 122 and the third recording paper sensor 123, but not detected by the first recording paper sensor 121. In the state of FIG. 6, the recording paper 100 is in contact with the protrusion 110, and even if the recording paper 100 is pulled in the direction of the arrow shown in FIG. Can be restricted.

  Next, when printing is further performed and the recording paper 100 is used, the radius of the recording paper 100 is reduced to r4 as shown in FIG. In the state of FIG. 7, the radius r <b> 4 of the recording paper 100 is substantially the same as the distance P, so that the recording paper 100 rides on the protrusion 110. Therefore, the center c4 of the recording paper 100 is located on the vertical line L including the protrusion 110 or in the vicinity of the vertical line L including the protrusion 110. Accordingly, the recording paper 100 is detected by the second recording paper sensor 122, but not detected by the first recording paper sensor 121 and the third recording paper sensor 123.

  As described above, since the recording paper 100 is pulled by the platen roller 50 provided on the lid portion 20, the recording paper 100 is on the side of the lid portion 20 when the radius r4 of the recording paper 100 is substantially the same as the distance P. Be drawn to. On the other hand, movement of the recording paper 100 in the left direction in FIG. Therefore, it is expected that the recording paper 100 is placed on the protrusion 110. However, since the radius r4 of the recording paper 100 is small, the recording paper 100 may roll on the bottom surface 11a of the recording paper holder 11. In this case, the recording paper 100 is not detected by the first recording paper sensor 121, but may be detected by the third recording paper sensor 123 or, rarely, the second recording paper sensor 122. is there. Therefore, when the recording paper 100 is not detected by the first recording paper sensor 121 and the second recording paper sensor 122, but is detected by the third recording paper sensor 123, the recording paper 100 is It can also be determined that the bottom surface 11a of the recording paper holder 11 is rolling in the area A2.

  Next, when the recording paper 100 is used after further printing, the radius of the recording paper 100 wound in a roll shape is reduced to r5 as shown in FIG. In the state of FIG. 8, the radius r5 of the recording paper 100 is smaller than the distance P, and the recording paper 100 is pulled by the platen roller 50 in the direction of the arrow in FIG. Gravitate. For this reason, the center c5 of the recording paper 100 is located in the first area A1. In this case, the recording paper 100 is detected by the second recording paper sensor 122, but not detected by the first recording paper sensor 121 and the third recording paper sensor 123.

  As described above, in a state where the radius r5 of the recording paper 100 is smaller than the distance P, the recording paper 100 is pulled by the platen roller 50 provided on the lid portion 20 and is drawn toward the lid portion 20 side. Although it is expected that the center of the recording paper 100 exists in the first area A1, there is a possibility that the recording paper 100 is rolling on the bottom surface 11a of the recording paper holder 11 in the area A2 because the radius r5 of the recording paper 100 is small. There is also. In this case, as in the case of FIG. 7, the recording paper 100 is not detected by the first recording paper sensor 121, but the third recording paper sensor 123 or, rarely, the second recording paper sensor. 122 may be detected.

  When printing is further performed from the state of FIG. 8 and the recording paper 100 is used, the radius of the recording paper 100 is further reduced to r6 as shown in FIG. In this state, since the radius r6 of the recording paper 100 is smaller than the distance P, the center c6 of the recording paper 100 is located in the first area A1, and the recording paper 100 is positioned on the recording paper holder 11 in the first area A1. It is in contact with the bottom surface 11a or in a state just before contacting the bottom surface 11a. In the case of FIG. 9, the recording paper 100 is detected by the first recording paper sensor 121 and the second recording paper sensor 122, but not detected by the third recording paper sensor 123.

  When printing is further performed from the state of FIG. 9 and the recording paper 100 is used, the radius of the recording paper 100 is reduced to r7 as shown in FIG. In the state of FIG. 10, since the radius r7 of the recording paper 100 is further smaller than the distance P and the diameter of the recording paper 100 is also smaller than the distance P, the center c7 of the recording paper 100 is located in the first area A1, and the recording paper 100 Reference numeral 100 denotes a first area A1 which contacts the bottom surface 11a of the recording paper holder 11. In this case, the recording paper 100 is detected by the first recording paper sensor 121, but not detected by the second recording paper sensor 122 and the third recording paper sensor 123.

  In the present embodiment, since the projection 110 is provided in the recording paper holder 11, the movement of the recording paper 100 is restricted by the projection 110 when the radius of the recording paper 100 is larger than r6. Therefore, the recording paper 100 is not detected by the first recording paper sensor 121. However, when the radius of the recording paper 100 is equal to or less than r6, the recording paper 100 gets over the protrusion 110 and contacts the bottom surface 11a in the area A1, and therefore the recording paper 100 is detected by the first recording paper sensor 121. . For this reason, it is possible to perform near-end detection using the first recording paper sensor 121 when the recording paper 100 is low.

  In the present embodiment, a state in which the recording paper 100 wound in a roll is further reduced and is detected by the first recording paper sensor 121 but is not detected by the second recording paper sensor 122 is referred to as the near end. It may be detected. In this state, the recording paper 100 is not detected by the third recording paper sensor 123.

  As described above, in the present embodiment, as the radius of the recording paper 100 wound in a roll shape gradually decreases, the center of the recording paper 100 wound in a roll shape starts from the second region A2. Move to the first area A1. In the present embodiment, the first recording paper sensor 121, the second recording paper sensor 122, and the third recording paper sensor 123 know the change in the state in which the radius of the recording paper 100 wound in a roll shape becomes small. be able to.

  FIG. 11 shows the relationship between whether or not the recording paper 100 is detected by the first recording paper sensor 121, the second recording paper sensor 122, and the third recording paper sensor 123 and the state of the recording paper 100. Note that the case where the recording paper 100 is detected by the first recording paper sensor 121, the second recording paper sensor 122 and the third recording paper sensor 123 is 1, and the case where the recording paper 100 is not detected is 0.

Specifically, in the state shown in FIGS. 4 to 6, that is, in the state of the radii r1, r2, and r3 in which the diameter of the recording paper 100 wound in a roll shape is relatively large,
(First recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (0, 1, 1)
It becomes.

Further, in the state shown in FIGS. 7 and 8, that is, in the state where the radius of the recording paper 100 wound in a roll shape is slightly smaller and the radii r4 and r5 have medium diameters.
(First recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (0, 1, 0)
It becomes.

Further, in the state shown in FIG. 9, that is, in the state of the radius r6 in which the radius of the recording paper 100 wound in a roll shape is further reduced,
(First recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (1, 1, 0)
It becomes. Therefore, the recording paper 100 wound in a roll shape is detected by the first recording paper sensor 121 only when the radius becomes r6. Therefore, when the recording paper 100 wound in a roll shape is detected by the first recording paper sensor 121, it is detected that the recording paper 100 is in the near-end state.

Note that the state shown in FIG. 9, that is, the state where the radius of the recording paper 100 is r7, is not the state shown in FIG. Good. At this time, when the recording paper 100 to be detected near-end has a radius r7,
(First recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (1, 0, 0)
It becomes.

  Further, when (first recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (0, 0, 1), the recording paper 100 wound in a roll shape is recorded. It may be determined that the bottom surface 11a of the paper holder 11 is rolling (the recording paper 100 is rotating).

  When (first recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (0, 0, 0), the recording paper 100 is placed in the recording paper holder 11. It does not exist.

  In the above-described example, the three recording paper sensors, that is, the first recording paper sensor 121, the second recording paper sensor 122, and the third recording paper sensor 123 do not detect the recording paper 100 at the same time. Further, the first recording paper sensor 121 and the third recording paper sensor 123 do not detect the recording paper 100 at the same time. Therefore, when (first recording paper sensor 121, second recording paper sensor 122, third recording paper sensor 123) = (1, 0, 1) or (1, 1, 1), the present embodiment In this form, it is an invalid state and invalid.

  As mentioned above, although the form which concerns on implementation of this invention was demonstrated, the said content does not limit the content of invention.

DESCRIPTION OF SYMBOLS 10 Printer main body part 11 Recording paper holder 11a Bottom surface 12 Control circuit board 13 Motor 14 Motor 15 Lock lever 20 Cover part 21 Open lever 30 Thermal head 41 Fixed blade 42 Movable blade 50 Platen roller 100 Recording paper (record wound in roll shape) paper)
110 Projection 121 First Recording Paper Sensor 122 Second Recording Paper Sensor 123 Third Recording Paper Sensor

Claims (8)

The printer body,
A lid attached to the printer main body so as to be openable and closable;
Have
The printer main body is provided with a recording paper holder for storing recording paper wound in a roll shape,
A protrusion is provided on the bottom surface inside the recording paper holder,
The bottom surface is a plane,
The protrusion protrudes from the bottom surface,
The protrusion is formed at a position where the recording paper is in contact with the bottom surface between the protrusion and the lid when the recording paper has a predetermined radius or less,
A printer device, wherein a first recording paper sensor for detecting the presence or absence of the recording paper is provided between the lid and the protrusion. The printer body,
A lid attached to the printer main body so as to be openable and closable;
Have
The printer main body is provided with a recording paper holder for storing recording paper wound in a roll shape,
A protrusion is provided on the bottom surface inside the recording paper holder,
The protrusion is formed at a position where the recording paper of the maximum diameter stored in the recording paper holder does not contact,
The protrusion is formed at a position where the recording paper is in contact with the bottom surface between the protrusion and the lid when the recording paper has a predetermined radius or less,
A printer device, wherein a first recording paper sensor for detecting the presence or absence of the recording paper is provided between the lid and the protrusion.   3. The printer apparatus according to claim 1, wherein the recording paper is placed on the recording paper holder in a state of being in contact with an inner bottom surface of the recording paper holder.   4. The second recording paper sensor for detecting the presence or absence of the recording paper is provided on a substantially vertical line of the protrusion on the inner side of the recording paper holder. 5. Printer device.   The third recording paper sensor for detecting the presence or absence of the recording paper is provided inside the recording paper holder at a position away from the protrusion from the lid. 5. The printer device according to any one of 4 above. A printer main body, a lid attached to the printer main body so as to be openable and closable, a recording paper holder provided in the printer main body for storing recording paper wound in a roll, and the recording paper A projection provided on the bottom surface inside the holder; and a first recording paper sensor provided between the lid and the projection, wherein the bottom is a plane, and the projection is A printer device that protrudes from the bottom surface , and wherein the protrusion is formed at a position where the recording paper contacts the bottom surface between the protrusion and the lid when the recording paper has a predetermined radius or less. In the recording paper near-end detection method,
A near-end detection method for recording paper in a printer apparatus, wherein when the recording paper is detected by the first recording paper sensor, the recording paper is detected as near-end. The printer apparatus further includes a second recording paper sensor provided on a substantially vertical line of the protrusion inside the recording paper holder,
Determining the detection state of the recording paper by the first recording paper sensor and the second recording paper sensor;
From the state where it is detected by the second recording paper sensor but not detected by the first recording paper sensor, it is not detected by the second recording paper sensor but detected by the first recording paper sensor. The method according to claim 6, wherein the recording paper is determined to be near-end when the recording paper is in a state of being printed. The printer apparatus further includes a third recording paper sensor provided inside the recording paper holder at a position away from the projection from the lid.
8. The recording of a printer apparatus according to claim 6, wherein when the recording paper is detected by the third recording paper sensor, it is determined that the recording paper is newly installed in the recording paper holder. Near-end detection method for paper.

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