This application claims priority to Japanese Patent Application No. 2018-198666, filed on Oct. 22, 2018, the entire content of which is incorporated herein by reference.
The present invention relates to a thermal printer and a portable terminal.
Hitherto, a thermal printer has been known as a printer configured to perform printing on recording paper (heat-sensitive paper). The thermal printer includes a thermal head, a platen roller, and a frame. The thermal head includes heating elements. The platen roller is configured to feed the recording paper by nipping the recording paper between the platen roller and the thermal head. The frame includes a shaft support portion configured to support the platen roller such that the platen roller is rotatable about an axis. In the thermal printer, the heating elements of the thermal head are caused to generate heat as appropriate during a course of feeding the recording paper through rotation of the platen roller, thereby being capable of printing various information on the recording paper.
The thermal printer having a configuration in which the platen roller and the thermal head are removably arranged so as to facilitate roll replacement is on the mainstream. This thermal printer has a configuration in which the platen roller side or the thermal head side is removable, and hence a gap is formed in a joint of an exterior (housing).
There are some thermal printers each having a configuration in which static electricity generated due to friction of heat-sensitive paper is released to the ground.
In some thermal printers which are mounted on portable terminals (for example, card settlement terminals), static electricity may enter from an outside in some cases. Specifically, a card reader is provided on a side surface of the thermal printer in the card settlement terminal. Therefore, static electricity generated due to friction caused when a card is slid or static electricity from a human body may enter the housing through the gap of the housing. When static electricity enters the housing, discharge to a shaft end of the platen roller occurs, and then, secondary discharge may occur in the thermal head close to the platen roller. When discharge occurs in the thermal head, there is a risk in that the electricity thereof may be routed to a control board of the terminal through a flexible substrate, resulting in an electrical malfunction.
In view of the foregoing, in the field of this kind, there has been a demand for a thermal printer and a portable terminal, which are capable of releasing static electricity discharged from outside to the ground.
According to one embodiment of the present invention, there is provided a thermal printer, including a thermal head configured to perform printing on recording paper; a platen roller, which is arranged at a position opposed to the thermal head, and is configured to convey the recording paper by nipping the recording paper between the thermal head and the platen roller; a head support plate having conductivity, which has the thermal head to be fixed thereto; a frame, which is configured to support the head support plate, and includes a shaft support portion configured to rotatably support the platen roller about an axis; and a conductive member having conductivity, which is provided between a side surface of the shaft support portion and the head support plate.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member is provided so as to discharge an electric current in non-contact with the head support plate.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member is held in contact with the head support plate.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member has flexibility.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member includes a first contact portion configured to be brought into contact with the shaft support portion; a second contact portion configured to be brought into contact with the head support plate; and a connecting portion configured to connect the first contact portion and the second contact portion to each other, and wherein at least a part of the connecting portion floats away from each of the shaft support portion and the head support plate.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member is removably provided to the shaft support portion.
In the above-mentioned printer according to the one embodiment of the thermal printer, wherein the shaft support portion has a groove portion having an edge portion that surrounds the platen roller about the axis, and wherein the conductive member is adjacent to at least a part of the edge portion of the groove portion.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member is arranged on an inner side of a shaft end of the platen roller in an axial direction.
In the above-mentioned thermal printer according to the one embodiment of the present invention, wherein the conductive member is configured to cover the shaft end of the platen roller from an outer side in the axial direction.
The above-mentioned thermal printer according to the one embodiment of the present invention, further includes a drive source, which is fixed to the frame, and is exposed to outside; a power transmission mechanism configured to transmit power of the drive source to the platen roller; and an earth member configured to connect the drive source and the head support plate to each other.
According to one embodiment of the present invention, there is provided a portable terminal, including the above-mentioned thermal printer; and a casing to which the thermal printer is mounted.
Now, one embodiment of the present invention is described with reference to the drawings. In the following embodiment, description is given by exemplifying a card settlement terminal (hereinafter referred to as “portable terminal”) that can be carried by a user. In the drawings used for the following description, the scale reduction of each member is appropriately changed so that each member has a recognizable size.
The casing 11 includes a casing main body 15 and a printer cover 16. The casing main body 15 is formed into a box shape having a rectangular shape in plan view. In a distal end portion of the casing main body 15, there is formed a recording paper receiving portion 17 configured to receive recording paper P (heat-sensitive paper). The recording paper P is received, under a state of being wound into a roll, in the recording paper receiving portion 17.
The printer cover 16 is turnably connected to the casing main body 15 through intermediation of a hinge portion (not shown). The printer cover 16 is configured to open and close the recording paper receiving portion 17. In the casing 11, there is formed a discharge port 18, which is configured to discharge the recording paper P to outside, between an opening edge of the recording paper receiving portion 17 and a distal edge of the printer cover 16.
The input display portion 12 is arranged on a front surface of the casing 11. For example, the input display portion 12 is a touch panel. The input display portion 12 is configured to display various information on a screen and enable operation to the information displayed on the screen.
The card reader 14 is arranged on a side surface of the casing 11. The card reader 14 has a groove (hereinafter referred to as “slot”) for allowing a card (not shown) to be slid. The card reader 14 can read information on the card when the card is slid in the slot.
The thermal printer 13 is mounted in the casing 11. The thermal printer 13 is arranged at a position adjacent to the discharge port 18 in the casing 11. The thermal printer 13 is configured to print information on the recording paper P, which is fed from the recording paper receiving portion 17, and to discharge the recording paper P through the discharge port 18.
In the example illustrated in
As described above, the thermal printer 13 has a configuration in which the platen roller 23 and the head unit 22 are removable. Therefore, a gap (not shown) is formed in a joint (boundary portion between the casing main body 15 and the printer cover 16) of an exterior (casing 11).
The following description is given through use of an XYZ orthogonal coordinate system as required. In the following description, an axial direction of the platen roller 23 is referred to as “X direction” (first direction), and two directions orthogonal to the X direction are referred to as “Y direction” (second direction) and “Z direction” (third direction). Further, in each of the X direction, the Y direction, and the Z direction, a direction indicated by the arrow in the drawings is described as a plus direction, and a direction opposite to the arrow is described as a minus direction.
As illustrated in
The base portion 32 includes a guide wall 35 and a back surface plate 36 (see
The first side plate portion 33 is connected to an end portion of the base portion 32, which includes the guide wall 35 and the back surface plate 36, in a minus X direction. At a portion of the first side plate portion 33 which protrudes in the plus Z direction with respect to the base portion 32, a first roller receiving groove 41 is formed. The first roller receiving groove 41 is formed so as to recess in the minus Z direction from an end edge of the first side plate portion 33 in the plus Z direction. At a portion of an inner peripheral edge of the first roller receiving groove 41 which is located in the plus Y direction, there is formed a first hook portion 43 which protrudes in the minus Y direction. A portion of the first side plate portion 33 which protrudes in the minus Z direction with respect to the base portion 32 constructs a motor support portion 45.
The second side plate portion 34 is connected to the end portion of the base portion 32 in a plus X direction. At a portion of the second side plate portion 34, which protrudes in the plus Z direction with respect to the base portion 32, there is formed a second roller receiving groove 42. The second roller receiving groove 42 is formed so as to recess in the minus Z direction from an end edge of the second side plate portion 34 in the plus Z direction. At a portion of an inner peripheral edge of the second roller receiving groove 42 which is located in the plus Y direction, there is formed a second hook portion 44 which protrudes in the minus Y direction.
The platen roller 23 nips the recording paper P with the thermal head 21 to convey the recording paper P toward the discharge port 18 (see
The platen shaft 51 extends in the X direction. At both end portions of the platen shaft 51 in the X direction, there are mounted a first bearing 53 and a second bearing 54, respectively. The bearings 53 and 54 are retained in the above-mentioned roller receiving grooves 41 and 42, respectively. With this, the platen roller 23 is supported on the frame 30 so as to be rotatable about an axis extending in the X direction and so as to be removable from the frame 30.
At a portion of the platen shaft 51 which is located in the minus X direction with respect to the first platen shaft 53, there is arranged a driven gear (transmission portion) 56. Under a state in which the platen roller 23 is retained in the roller receiving grooves 41 and 42, the driven gear 56 is positioned in the minus X direction from the first side plate portion 33.
The roller main body 52 is made of, for example, rubber. The roller main body 52 is mounted on the platen shaft 51. The roller main body 52 is provided at a portion of the platen shaft 51 other than the both end portions of the platen shaft 51 in the X direction. An outer peripheral surface of the roller main body 52 is held in contact with the thermal head 21.
At a portion of the above-mentioned frame 30 which is located in the plus X direction with respect to the motor support portion 45, there is arranged a motor (drive source) 61. The motor 61 is arranged under a state in which a rotary shaft (not shown) thereof protrudes in the minus X direction. The motor 61 is connected to the controller through intermediation of a flexible board 46 or the like. The motor 61 is fixed to the frame 30. The motor 61 is exposed to outside.
As illustrated in
The first speed reduction mechanism 62 is arranged between the motor 61 and the motor support portion 45 in the X direction. For example, the first speed reduction mechanism 62 is a planetary gear mechanism. The first speed reduction mechanism 62 has an output gear 63 which protrudes in the minus X direction. The output gear 63 protrudes through a through hole 45a, which is formed in the motor support portion 45, in the minus X direction with respect to the motor support portion 45.
The second speed reduction mechanism 65 is arranged in the minus X direction with respect to the first side plate portion 33. For example, the second speed reduction mechanism 65 is a gear train mechanism including a two-step gear. The second speed reduction mechanism 65 provides connection between the output gear 63 of the first speed reduction mechanism 62 and a driven gear 56 of the platen roller 23. The second speed reduction mechanism 65 is covered with a gear cover 66 from the minus X direction (see
An earth member 69 is configured to connect the motor 61 and a head support plate 71 to each other. For example, the earth member 69 is formed of a member having conductivity such as metal.
As illustrated in
The thermal head 21 is affixed to the head support plate 71 from the plus Y direction. The thermal head 21 has a plate-like shape extending in the X direction. On a surface (hereinafter referred to as “head surface”) of the thermal head 21, which is oriented in the plus Y direction, a plurality of heating elements 21a are arrayed in the X direction at intervals.
The thermal head 21 is connected to, for example, a controller (not shown) through the flexible board 46. In the thermal head 21, heat generation of the heating elements 21a is controlled by a driver IC (not shown) mounted to the thermal head 21 in accordance with a signal transmitted from the controller. When the recording paper P passes through the heating elements 21a, printing on the recording paper P is performed.
The sensor holder 72 is assembled to the head support plate 71 from the plus Y direction. The sensor holder 72 includes a cover portion 73 located in the plus Z direction with respect to the guide wall 35. A surface of the cover portion 73 which is oriented in the plus Y direction forms a guide surface configured to guide the recording paper P to the thermal head 21. The guide surface is configured to smoothly connect a paper passage surface of the guide wall 35 and the head surface of the thermal head 21 to each other.
At an end portion of the cover portion 73 in the plus X direction, there is formed a passing hole 74 which penetrates through the cover portion 73. At a portion of an opening edge of the passing hole 74, which is located in the minus Z direction, there is formed a seat portion 75 which protrudes in the minus Y direction. A recording paper sensor 76 is supported on the seat portion 75.
For example, the recording paper sensor 76 is a PI sensor (photo sensor) of a reflection type. The recording paper sensor 76 includes a light emitter and a light receiver. Light emitted from the light emitter is reflected on the recording paper P, and the reflected light can be detected by the light receiver. The recording paper sensor 76 is connected to the controller through the flexible board 46. When the reflected light is detected by the light receiver of the recording paper sensor 76, the controller determines that the recording paper P is present within a detection range of the recording paper sensor 76.
The conductive member 80 is provided so as to discharge an electric current in non-contact with the head support plate 71. The conductive member 80 is removably provided to the shaft support portion 90 (see
As illustrated in
The contact portion 81 extends in the Y direction. The contact portion 81 is held in contact with the side surface of the shaft support portion 90 in the plus X direction (see
The connecting portion 82 is configured to connect the contact portion 81 and the extending portion 83 to each other. The connecting portion 82 extends from an end of the contact portion 81 in the minus Y direction toward the minus X direction.
The extending portion 83 extends from an end of the connecting portion 82 in the minus X direction toward the plus Y direction (head support plate 71) (see
The first inclined portion 83a is inclined so that the end of the first inclined portion 83a in the plus Y direction is located on the plus X direction side with respect to the position of an end of the first inclined portion 83a in the minus Y direction. The second inclined portion 83b is inclined so that an end of the second inclined portion 83b in the plus Y direction is located on the minus X direction side with respect to the position of an end of the second inclined portion 83b in the minus Y direction.
For example, the conductive member 80 is formed of a member having a restoring force (for example, a metal plate). The projection portion 91 of the shaft support portion 90 is inserted into the through hole 85 in the contact portion 81. The end of the first inclined portion 83a of the extending portion 83 in the plus Y direction (coupled portion between the first inclined portion 83a and the second inclined portion 83b) is held in the engagement hole 92. With this, the conductive member 80 is removable from the shaft support portion 90.
The end of the second inclined portion 83b of the extending portion 83 in the plus Y direction is away from the head support plate 71. With this, the conductive member 80 can discharge an electric current in non-contact with the head support plate 71.
The shaft support portion 90 includes a receiving recess portion 95 configured to receive the conductive member 80. The receiving recess portion 95 includes a first recess portion 96 that is formed more deeply than the thickness (length in the X direction) of the contact portion 81, and a second recess portion 97 that is formed more deeply than the thickness (length in the Y direction) of the connecting portion 82.
The first recess portion 96 is configured to receive the contact portion 81 so that the contact portion 81 is located on an inner side of the side surface of the shaft support portion 90 in the plus X direction. The first recess portion 96 has a contour along an outer shape of the contact portion 81 so as to allow the conductive member 80 to be removed (see
The second recess portion 97 is configured to receive the connecting portion 82 so that the connecting portion 82 is located on an inner side of the side surface of the shaft support portion 90 in the minus Y direction. The second recess portion 97 has a contour along an outer shape of the connecting portion 82 (see
As illustrated in
The conductive member 80 is adjacent to each of the first edge 42a and the second edge 42b. The contact portion 81 (portion in the plus Y direction from the protruding portion 84) of the conductive member 80 has a contour along the first edge 42a. The protruding portion 84 (inclined portion) of the conductive member 80 has a contour along the second edge 42b.
Next, an operation method of the portable terminal 1 is described. In the following description, it is assumed that a leading edge of the recording paper P is nipped between the platen roller 23 and the thermal head 21. In the portable terminal 1, printing on the recording paper P is started through operation to the input display portion 12. Specifically, a signal is output from the controller to the motor 61 through, for example, the flexible board 46, with the result that the motor 61 rotates. The power of the motor 61 is reduced by the first speed reduction mechanism 62 and the second speed reduction mechanism 65 and thereafter is transmitted to the driven gear 56. With this, the platen roller 23 is rotated. Then, the recording paper P nipped between the outer peripheral surface of the platen roller 23 and the thermal head 21 is delivered toward the discharge port 18.
When the signal is output from the controller to the thermal head 21 through the flexible board 46 during the course of delivering the recording paper P through rotation of the platen roller 23, the heating elements 21a of the thermal head 21 generate heat as appropriate. With this, various information is printed on the recording paper P. Then, the recording paper P discharged through the discharge port 18 is cut and used as, for example, a receipt.
Next, the action of the conductive member 80 is described together with a comparative example.
In the embodiment, a path in which the static electricity E generated outside does not pass through the thermal head 21 is secured. Therefore, there is a low risk in that the static electricity E generated outside may be routed to the control board of the terminal through the flexible substrate 46 (see
As described above, the thermal printer 13 according to the embodiment includes the thermal head 21 configured to perform printing on recording paper; the platen roller 23, which is arranged at a position opposed to the thermal head 21, and is configured to convey the recording paper by nipping the recording paper between the thermal head 21 and the platen roller 23; the head support plate 71 having conductivity, which has the thermal head 21 fixed thereto; the frame 30, which is configured to support the head support plate 71, and includes a shaft support portion 90 configured to rotatably support the platen roller 23 about an axis; and the conductive member 80 having conductivity, which is provided between the side surface of the shaft support portion 90 and the head support plate 71.
According to this embodiment, the conductive member 80 is provided between the side surface of the shaft support portion 90 and the head support plate 71, and hence the static electricity discharged from outside to the shaft support portion 90 of the frame 30 is earth-connected to the frame ground through the conductive member 80 and the head support plate 71. Therefore, a path in which the static electricity discharged from outside does not pass through the thermal head 21 can be secured. As a result, the static electricity discharged from outside can be released to the ground. In addition, only the conductive member 80 (only one additional component) can handle the above-mentioned situation, and hence countermeasures against the static electricity can be taken at low cost.
Further, in this embodiment, the conductive member 80 is provided so as to discharge an electric current in non-contact with the head support plate 71.
According to this embodiment, the conductive member 80 is away from the head support plate 71, and hence the influence of the movement (for example, minute vibration) of the head support plate 71 on the conductive member 80 can be suppressed. In addition, as compared to the case in which a pressure-sensitive adhesive tape for bringing the conductive member 80 into contact with the head support plate 71 is provided, the number of components can be reduced, thereby being capable of achieving reduction in cost.
Further, in this embodiment, the conductive member 80 is removably provided to the shaft support portion 90.
According to this embodiment, it is preferred that the conductive member 80 be removably provided to the shaft support portion 90 because the conductive member 80 can be removed from the shaft support portion 90 in accordance with the specifications of the portable terminal 1. For example, when the portable terminal 1 is a card settlement terminal, the static electricity discharged from outside can be released to the ground by mounting the conductive member 80 on the shaft support portion 90. For example, when the portable terminal 1 is a terminal other than the card settlement terminal (for example, when the card reader is not provided to the side surface of the thermal printer 13), the portable terminal 1 can be reduced in weight by removing the conductive member 80 from the shaft support portion 90.
Further, in this embodiment, the shaft support portion 90 has the groove portion 42 having the edge portions 42a and 42b that surround the platen roller 23 about the axis, and the conductive member 80 is adjacent to at least a part of the edge portions 42a and 42b of the groove portion 42.
According to this embodiment, the platen roller 23 and the conductive member 80 can be brought close to each other to the extent possible, and hence the static electricity discharged to the platen roller 23 can be more reliably discharged to the conductive member 80. In addition, in the embodiment, the conductive member 80 is adjacent to each of the first edge 42a and the second edge 42b of the groove portion 42. With this, the following effect can be attained. As compared to the case in which the conductive member 80 is adjacent to only any one of the first edge 42a and the second edge 42b of the groove portion 42, the static electricity discharged to the platen roller 23 can be more reliably discharged to the conductive member 80.
Further, in this embodiment, the conductive member 80 is arranged on the inner side of the shaft end 51a of the platen roller 23 in an axial direction.
According to this embodiment, as compared to the case in which the conductive member 80 is arranged on an outer side of the shaft end 51a of the platen roller 23 in the axial direction, the thermal printer 13 can be downsized in the axial direction.
Further, in this embodiment, the thermal printer 13 further includes the drive source 61, which is fixed to the frame 30, and is exposed to outside; the power transmission mechanism 60 configured to transmit power of the drive source 61 to the platen roller 23; and the earth member 69 configured to connect the drive source 61 and the head support plate 71 to each other.
According to this embodiment, the static electricity discharged from outside to the shaft support portion 90 of the frame 30 is earth-connected to the frame ground through the conductive member 80, the head support plate 71, the earth member 69, and the drive source 61. The drive source 61 is exposed to outside in the thermal printer 13, and hence is easily accessed in the terminal. Through formation of a path in which the static electricity is earth-connected from the drive source 61 that is easily accessed in the terminal to the frame ground, the degree of freedom of layout of the terminal can be improved.
The portable terminal 1 according to this embodiment includes the thermal printer 13 described above; and the casing 11 to which the thermal printer 13 is mounted.
According to this embodiment, the portable terminal 1 capable of releasing the static electricity discharged from outside to the ground can be provided.
Note that, the technical scope of the present invention is not limited to the above-mentioned embodiments, but various modifications may be made without departing from the gist of the present invention.
In the above-mentioned embodiment, description is given of the configuration in which the conductive member 80 is provided so as to discharge an electric current in non-contact with the head support plate 71. However, the present invention is not limited thereto.
The conductive member 180 has a crank shape. The conductive member 180 includes a first contact portion 181, a second contact portion 182, and a connecting portion 183. The first contact portion 181 extends in the Y direction (see
The connecting portion 183 is configured to connect the first contact portion 181 and the second contact portion 182 to each other. At least a part of the connecting portion 183 floats away from each of the shaft support portion 90 and the head support plate 71 (see
The connecting contact portion 183a extends from an end of the first contact portion 181 in the minus Y direction toward the minus X direction (see
As illustrated in
In the first modification example, unlike the embodiment, the discharge path (arrow V3 of
In the first modification example, the conductive member 180 is held in contact with the head support plate 71.
According to the first modification example, as compared to the case in which the conductive member 180 is away from the head support plate 71, the static electricity discharged to the conductive member 180 can be more reliably transmitted to the head support plate 71.
In the first modification example, the conductive member has flexibility.
According to the first modification example, when the conductive member 180 is held in contact with the head support plate 71, the conductive member 180 is capable of following the movement of the head support plate 71. Therefore, as compared to the case in which the conductive member 180 is formed of a rigid body, damages to the conductive member 180 and the like, which are caused by the movement of the head support plate 71, can be suppressed.
In the first modification example, the conductive member 180 includes the first contact portion 181 configured to be brought into contact with the shaft support portion 90; the second contact portion 182 configured to be brought into contact with the head support plate 71; and the connecting portion 183 configured to connect the first contact portion 181 and the second contact portion 182 to each other, and at least a part of the connecting portion 183 floats away from each of the shaft support portion 90 and the head support plate 71.
According to the first modification example, when the conductive member 180 is held in contact with the head support plate 71, the movement of the head support plate 71 can be absorbed by at least a part of the connecting portion 183. Therefore, as compared to the case in which the entire connecting portion 183 is held in contact with each of the shaft support portion 90 and the head support plate 71, damages to the conductive member 180 and the like, which are caused by the movement of the head support plate 71, can be suppressed.
In the first modification example, the conductive member 180 is adjacent to the first edge 42a of the groove portion 42. A gap is formed between the conductive member 180 and the second edge 42b of the groove portion 42.
In the first modification example, when the conductive member 180 is formed of a conductive tape, the conductive member 180 can be affixed so as to be brought close to the first edge 42a of the groove portion 42. Therefore, as compared to the case in which the conductive member 180 is adjacent to each of the first edge 42a and the second edge 42b of the groove portion 42, the burden in a step of affixing the conductive member 180 can be alleviated.
In the above-mentioned embodiment, description is given of the configuration in which the conductive member 80 is arranged on an inner side of the shaft end 51a of the platen roller 23 in the axial direction. However, the present invention is not limited thereto.
The conductive member 280 includes a cover portion 286 configured to cover the shaft end 51a of the platen roller 23 from an outer side in the axial direction. The cover portion 286 extends from the contact portion 81 to an outer side of the shaft end 51a (plus X direction from the shaft end 51a) of the platen roller 23. For example, the cover portion 286 is formed integrally with the contact portion 81 through use of the same member.
In the second modification example, the conductive member 280 is configured to cover the shaft end 51a of the platen roller 23 from an outer side in the axial direction.
According to the second modification example, as compared to the case in which the conductive member avoids the shaft end 51a of the platen roller 23 when seen from the axial direction, the static electricity discharged from outside can be more reliably discharged to the conductive member 280.
In the above-mentioned embodiment, description is given of the case in which the settlement terminal is used as one example of the portable terminal 1. However, the present invention is not limited thereto. For example, the portable terminal 1 may be applied to various portable terminals other than the settlement terminal.
Besides, the components in the above-mentioned embodiments may be replaced by well-known components as appropriate without departing from the gist of the present invention.
Number | Date | Country | Kind |
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JP2018-198666 | Oct 2018 | JP | national |
Number | Name | Date | Kind |
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6276848 | Takizawa et al. | Aug 2001 | B1 |
20060176360 | Montagutelli | Aug 2006 | A1 |
20060291933 | Watanabe | Dec 2006 | A1 |
20070222850 | Tozaki | Sep 2007 | A1 |
Number | Date | Country |
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1837188 | Sep 2007 | EP |
1837188 | Dec 2008 | EP |
3246169 | Nov 2017 | EP |
2011-037096 | Feb 2011 | JP |
2011056956 | Mar 2011 | JP |
WO 03080347 | Oct 2003 | WO |
Entry |
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Extended European Search Report for European Application No. 19204639.9, dated Feb. 26, 2020, 8 pages. |
Number | Date | Country | |
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20200122478 A1 | Apr 2020 | US |