CN215662559U - Printing device - Google Patents
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- CN215662559U CN215662559U CN202120367540.9U CN202120367540U CN215662559U CN 215662559 U CN215662559 U CN 215662559U CN 202120367540 U CN202120367540 U CN 202120367540U CN 215662559 U CN215662559 U CN 215662559U
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- 230000005540 biological transmission Effects 0.000 claims abstract description 7
- 238000011144 upstream manufacturing Methods 0.000 claims description 4
- 230000013011 mating Effects 0.000 claims description 3
- 238000001514 detection method Methods 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 4
- 230000003287 optical effect Effects 0.000 description 4
- 238000012546 transfer Methods 0.000 description 3
- 238000013459 approach Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
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Abstract
The utility model discloses a printing device, which comprises a printing unit with a printing head and a compression roller unit with a printing rubber roller, wherein a printing channel for transmitting a printing medium is formed between the printing unit and the compression roller unit; wherein the luminous tube and the receiving tube are arranged at intervals; the light processing element is configured to receive the light emitted by the light emitting tube and at least partially convey the received light to a receiving portion of the receiving tube. Compared with the reflection type or transmission type detection mode in the prior art, the printing device does not need to set a voltage threshold value to judge the paper feeding condition in the printing channel, so that the printing device can be suitable for printing media of different materials, and can avoid the influence of pre-printed contents on the printing media on the detection result.
Description
Technical Field
The utility model relates to the technical field of printing, in particular to a printing device.
Background
With the continuous development of heat transfer technology and the popularization of civil heat transfer technology, various printing device products with various application scenes, such as express waybill printer cores, price label printer cores, student wrong-question printers and small portable thermal printers, have gradually been integrated into the daily life of people. There is an increasing demand for the accuracy of the status function determination of the printing device, for example, to prevent the loss of the previous label or the adhesion damage of two labels caused by the fact that the printed label is not taken away by the price label printing device and the next label is printed. Therefore, the status determination of whether paper is taken away after printing of a single print is particularly important, and for example, the label printing apparatus needs to perform a paper taking detection assistance determination before the paper is saved or a position where a printing head line is located is confirmed to perform a rollback positioning action, and then, the printing apparatus needs to accurately determine whether paper exists in a certain area.
At present, most of printing devices on the market use a photoelectric pair to identify and position paper. The detection principle includes two types of reflective detection and transmissive detection. The reflective detection light emitting tube and the reflective detection receiving tube are arranged on the same side of the printing channel, and the transmissive detection light emitting tube and the transmissive detection receiving tube are respectively arranged on two sides of the printing channel. Because of the limitations of structure and cost, the photoelectric pair of the existing printing device generally adopts reflective detection, and the detection principle is that whether paper reflected light is reflected to a receiving tube by paper exists after a light-emitting tube emits light, and whether paper exists at the detection position is judged according to the magnitude relation between the level generated by the receiving tube and a preset voltage threshold.
In some use scenes, there may be some non-reflective colors such as black printed or printed on the paper, and at this time, if the light emitting tube is over against the area of the paper, there will be substantially no light reflected to the receiving tube, so that the printing device makes an error determination, such as: the printing device cannot be normally used due to the fact that paper is available and paper is unavailable, and use experience of a user is seriously influenced.
SUMMERY OF THE UTILITY MODEL
In view of the above problems, it is an object of the present invention to provide a printing apparatus to improve the above problems. A printing device comprises a printing unit with a printing head and a compression roller unit with a printing rubber roller, wherein a printing channel for conveying a printing medium is formed between the printing unit and the compression roller unit; wherein the luminous tube and the receiving tube are arranged at intervals; the light processing element is configured to receive the light emitted by the light emitting tube and at least partially convey the received light to a receiving portion of the receiving tube.
Preferably, the light management component has a light management capability that is more efficient than print media transport light.
Preferably, the printing unit includes an upper casing, and the platen roller unit includes a lower casing, and the upper casing and the lower casing form the printing passage through mating surfaces thereof when engaged.
Preferably, the light emitting tube and the receiving tube are disposed on an upstream side of the print head in a paper feeding direction.
Preferably, the light emitting tube and the receiving tube are arranged at an interval in a width direction of the printing passage.
Preferably, the light management element is a reflector.
Preferably, the reflector includes a first reflector, and the light emitted from the light emitting tube forms an angle with a mirror surface of the second reflector so that the second reflector can reflect the light in a predetermined direction; the receiving tube is configured on the transmission path of the reflected light.
Preferably, the reflecting member includes a second reflecting mirror and a third reflecting mirror, the third reflecting mirror being disposed opposite to the fourth reflecting mirror; the second reflecting mirror is used for receiving the light rays emitted by the light emitting tube and reflecting the light rays to the third reflecting mirror; the third reflector is used for receiving the light reflected by the second reflector and reflecting the light to the receiving part of the receiving pipe.
Preferably, the printing device further comprises a controller, and the controller is electrically connected with the light emitting tube and the receiving tube.
Preferably, the printing device further comprises an indicator light, and the indicator light is electrically connected with the controller.
The embodiment of the utility model also provides a printing device, which comprises a printing unit with a printing head and a compression roller unit with a printing rubber roller, wherein a printing channel for transmitting a printing medium is formed between the printing unit and the compression roller unit; wherein the luminous tube and the receiving tube are arranged at intervals; the light emitting tube is configured to emit light to the light processing element, and the receiving tube is configured to: the light reflected by the light processing element can be received, and the light cannot be received when the printing medium passes through the light emitting tube and/or the transmission path of the light reflected by the light processing element.
In summary, the printing apparatus provided in this embodiment sets the light emitting tube, the receiving tube and the light processing element on two sides of the printing channel, and when there is no printing medium in the printing channel, the receiving tube can receive more light emitted from the light emitting tube, and when there is printing medium passing through the printing channel, the receiving tube can hardly receive light emitted from the light emitting tube. Therefore, the printing device can accurately judge the paper feeding condition in the printing channel. Compared with the reflective or transmissive detection method in the prior art, the present embodiment does not need to determine the paper feeding condition in the printing channel by setting a voltage threshold, and thus can be adapted to the printing media of different materials, and can avoid the influence of the pre-printed content on the printing media on the detection result.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic diagram of an optical path of a printing apparatus provided in an embodiment of the present invention when no printing medium is present in a printing path.
Fig. 2 is a schematic diagram of an optical path of a printing apparatus according to an embodiment of the present invention when a printing medium is present in a printing path.
FIG. 3 is a simplified optical path diagram of a printing apparatus according to another embodiment of the present invention when no print media is in the print path.
FIG. 4 is a simplified optical path diagram of a printing apparatus with print media in a print path according to another embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
For better understanding of the technical solutions of the present invention, the following detailed descriptions of the embodiments of the present invention are provided with reference to the accompanying drawings.
Referring to fig. 1 to 4, an embodiment of the present invention provides a printing apparatus, including a printing unit 10 having a printing head 11 and a platen roller unit 20 having a printing rubber roller 21, a printing channel 25 for conveying a printing medium 200 is formed between the printing unit 10 and the platen roller unit 20, and further including a light emitting tube 30 and a receiving tube 40 disposed on one side of the printing unit 10 and the platen roller unit 20, and a light processing element disposed on the other side of the printing unit 10 and the platen roller unit 20; wherein, the luminous tube 30 and the receiving tube 40 are arranged at intervals; the light processing element is configured to receive the light emitted through the light emitting tube 30 and to at least partially deliver the received light to the receiving portion of the receiving tube 40. Wherein, printing device can be the printer, install print module assembly or the printer core on the printer.
In one embodiment, specifically, the printing unit 10 includes an upper housing, and the platen roller unit 20 includes a lower housing, and the upper housing and the lower housing form the printing passage 25 through mating surfaces thereof when engaged.
The upper shell and the lower shell are detachably connected or connected in an opening and closing manner, and the utility model is not limited.
In the present embodiment, in particular, the light emitting tube 30 and the receiving tube 40 are provided on the side of the platen unit 20, and the light processing member is provided on the side of the printing unit 10. Of course, it should be understood that in other embodiments of the present invention, the light emitting tube 30 and the receiving tube 40 may be disposed on the side of the printing unit 10, and the light processing element may be disposed on the side of the pressure roller unit 20, which are all within the protection scope of the present invention.
In addition, in the present embodiment, the light emitting tube 30 and the receiver tube 40 are used to detect the position state of the printing medium 200 before printing, and therefore, the light emitting tube 30 and the receiver tube 40 need to be disposed before the printing head 11, that is, the light emitting tube 30 and the receiver tube 40 are disposed on the upstream side of the printing head 11 in the paper feeding direction.
In the present embodiment, the light processing element functions to transfer the received light from light emitting tube 30 to receiving tube 40 when there is no printing medium in printing path 25 or the printing medium does not block the light emitted from light emitting tube 30.
In particular, in the present embodiment, the light processing element has a light processing capability higher than the printing medium conveyance efficiency, and is, for example, a reflecting member (e.g., a mirror) having a higher reflectance than the printing medium, and emits the received light from the light emitting tube 30 to the receiving portion of the receiving tube 40 by the principle of reflection of the light. It will be appreciated that the reflector does not guarantee that all of the received light is reflected to the receiving portion of the receiving tube 40 due to inevitable losses.
In one embodiment, light emitting tube 30 and receiving tube 40 are spaced apart in the width direction of print channel 25. In one printing device arrangement, the paper feed opening is designed close to the print head 11 for reducing the volume of the printing apparatus. At this time, the path of the printing path 25 on the upstream side of the printing head 11 is short, so that the light emitting tube 30 and the receiver tube 40 which are arranged at an interval are too close to each other, and the receiver tube 40 receives excessive light reflected by the printing medium because the printing medium is not transported in a direction parallel to the printing path, and therefore, the light emitting tube 30 and the receiver tube 40 are arranged at an interval in the width direction of the printing path 25, so that the interval can satisfy the arrangement mode that the receiver tube 40 does not receive the light reflected by the printing medium. It is to be understood that in other embodiments, light emitting tube 30 and receiving tube 40 can be provided at intervals in the paper feeding direction, particularly, in the case where the distance between the paper feeding port and print head 11 is long, or the paper feeding port and paper discharging port are arranged linearly in the paper feeding direction.
In this embodiment, the printing apparatus further includes a controller, the controller is electrically connected to both the light emitting tube 30 and the receiving tube 40, and the controller can control the operation of the light emitting tube 30, receive the voltage of the receiving tube 40, and further determine the current condition of the printing medium in the printing channel 25 according to the voltage condition.
As shown in fig. 1, in one implementation, the reflector includes a first reflector 50, and the light emitted from the light emitting tube 30 forms an angle with the mirror surface of the first reflector 50, so that the first reflector 50 can reflect the light in a predetermined direction; the receiving tube 40 is disposed on a transmission path of the reflected light. Therefore, when there is no printing medium 200 in the printing path 25, the receiving pipe 40 can receive the light reflected by the first reflecting mirror 50 and generate a large leakage current, and the controller of the printing apparatus thus determines that there is no paper in the printing path 25.
As shown in fig. 2, when the printing medium 200 is fed along the printing path and located between the light emitting tube 30 and the first reflector 50, the light emitted from the light emitting tube 30 is received and/or reflected by the printing medium 200, at this time, the receiving tube 40 cannot receive the light due to the change of the light reflection path, at this time, the receiving tube 40 cannot receive the light and a large leakage current is generated, the voltage drop thereof approaches to 0V, and the printing apparatus thus determines that there is a paper in the printing path. It can be understood that, the light beam transmitted to the receiving tube 40 after being diffusely reflected by the printing medium 200 is less, and at this time, the light beam received by the receiving tube 40 does not generate a large leakage current, and the voltage drop thereof approaches to 0V, so that the printing apparatus determines that there is a paper in the printing channel.
In one implementation, as shown in fig. 2, the reflector includes a second reflector 60 and a third reflector 70, the second reflector 60 being disposed opposite the third reflector 70; wherein the second reflecting mirror 60 is used for receiving the light emitted by the light emitting tube 30 and emitting the light to the third reflecting mirror 70; the third reflecting mirror 70 is used for receiving the light reflected by the second reflecting mirror 60 and reflecting the light to the receiving part of the receiving pipe 40.
In the same manner, as shown in fig. 3, in the present embodiment, when there is no printing medium 200 in the printing path 25, the receiving pipe 40 can receive the light reflected by the second reflecting mirror 60 and the third reflecting mirror 70 and generate a large leakage current, and the controller of the printing apparatus thus determines that there is no paper in the printing path 25.
As shown in fig. 4, when the printing medium 200 is fed along the printing path 25 and positioned between the light emitting tube 30 and the second reflecting mirror 60, the light emitted from the light emitting tube 30 may be received and/or reflected by the printing medium 200, at this time, the light receiving tube 40 may not receive the light due to the change of the light reflection path, at this time, the light receiving tube 40 may not receive the light, and a large leakage current may not be generated, and thus the printing apparatus may determine that there is a paper in the printing path.
It should be noted that, according to the principle of light reflection, the number of the reflectors of the reflector and the relative positions between the reflectors may be set, and only the light emitted from the light emitting tube 30 can reach the receiving portion of the receiving tube 40 after being emitted by the reflector, and these schemes are all within the protection scope of the present invention.
In summary, in the printing apparatus provided in this embodiment, the light emitting tube 30, the receiving tube 40 and the light processing element are disposed on two sides of the printing channel 25, and when there is no printing medium in the printing channel 25, the receiving tube 40 can receive more light emitted from the light emitting tube 30, and when there is a printing medium passing through the printing channel 25, the receiving tube 40 can hardly receive light emitted from the light emitting tube 30. In this way, the controller of the printing apparatus can accurately determine the paper advance in the printing path 25. Compared with the reflective or transmissive detection method in the prior art, the present embodiment does not need to determine the paper feeding condition in the printing channel by setting a voltage threshold, and thus can be adapted to the printing media of different materials, and can avoid the influence of the pre-printed content on the printing media on the detection result. Preferably, the printing device further comprises an indicator light, and the indicator light is electrically connected with the controller.
The indicator light may be used to indicate the condition of the printing medium of the printing apparatus, for example, whether paper is out of stock, whether paper is jammed, and the like, and the present invention is not limited in particular.
Preferably, the printing apparatus may further include a paper outlet 90 disposed at one end of the printing channel 25, which are all general configurations of the printing apparatus, and the details of the present invention are not repeated herein.
The second embodiment of the utility model also provides a printing device, which comprises a printing unit with a printing head and a compression roller unit with a printing rubber roller, wherein a printing channel for transmitting a printing medium is formed between the printing unit and the compression roller unit; wherein the luminous tube and the receiving tube are arranged at intervals; the light emitting tube is configured to emit light to the light processing element, and the receiving tube is configured to: the light reflected by the light processing element can be received, and the light cannot be received when the printing medium passes through the light emitting tube and/or the transmission path of the light reflected by the light processing element. Reference is made to the above embodiments for structures, functions, and effects not mentioned in the second embodiment.
While the foregoing is directed to the preferred embodiment of the present invention, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the utility model.
Claims (10)
1. A printing device comprises a printing unit with a printing head and a compression roller unit with a printing rubber roller, wherein a printing channel for transmitting a printing medium is formed between the printing unit and the compression roller unit; wherein the luminous tube and the receiving tube are arranged at intervals; the light processing element is configured to receive the light emitted by the light emitting tube and at least partially convey the received light to a receiving portion of the receiving tube.
2. The printing device of claim 1, wherein the light management component is a reflector and the light management component has a light management capability that is more efficient than a print media delivery light.
3. The printing apparatus according to claim 1, wherein the printing unit includes an upper housing, and the platen roller unit includes a lower housing, and the upper housing and the lower housing form the printing passage through mating surfaces thereof when engaged.
4. The printing apparatus according to claim 1, wherein the light emitting tube and the receiving tube are provided on an upstream side of the print head in a paper feeding direction.
5. The printing apparatus according to claim 4, wherein the light emitting tube and the receiving tube are provided at intervals in a width direction of the printing passage.
6. The printing apparatus of claim 2, wherein the light processing component comprises a first reflector, the light emitted by the light emitting tube being at an angle to a mirror surface of the second reflector such that the second reflector is capable of reflecting the light in a predetermined direction; the receiving tube is configured on the transmission path of the reflected light.
7. The printing apparatus of claim 2, wherein the light processing element comprises a second mirror and a third mirror, the third mirror being disposed opposite the fourth mirror; the second reflecting mirror is used for receiving the light rays emitted by the light emitting tube and reflecting the light rays to the third reflecting mirror; the third reflector is used for receiving the light reflected by the second reflector and reflecting the light to the receiving part of the receiving pipe.
8. The printing device of claim 1, further comprising a controller electrically connected to the light emitting tube and the receiving tube.
9. The printing apparatus of claim 8, further comprising an indicator light, wherein the indicator light is electrically connected to the controller.
10. A printing device comprises a printing unit with a printing head and a compression roller unit with a printing rubber roller, wherein a printing channel for transmitting a printing medium is formed between the printing unit and the compression roller unit; wherein the luminous tube and the receiving tube are arranged at intervals; the light emitting tube is configured to emit light to the light processing element, and the receiving tube is configured to: the light reflected by the light processing element can be received, and the light cannot be received when the printing medium passes through the light emitting tube and/or the transmission path of the light reflected by the light processing element.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367540.9U CN215662559U (en) | 2021-02-08 | 2021-02-08 | Printing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120367540.9U CN215662559U (en) | 2021-02-08 | 2021-02-08 | Printing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215662559U true CN215662559U (en) | 2022-01-28 |
Family
ID=79968563
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120367540.9U Active CN215662559U (en) | 2021-02-08 | 2021-02-08 | Printing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215662559U (en) |
-
2021
- 2021-02-08 CN CN202120367540.9U patent/CN215662559U/en active Active
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Address after: 361000 room 305A, Aung Yip house, Pioneer Park, torch high tech Zone, Xiamen, Fujian Patentee after: Xiamen Hanyin Co.,Ltd. Country or region after: China Address before: 361000 room 305A, Aung Yip house, Pioneer Park, torch high tech Zone, Xiamen, Fujian Patentee before: XIAMEN HANIN ELECTRONIC TECHNOLOGY Co.,Ltd. Country or region before: China |
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