CN116080286A - Method for detecting printed label by using reflection and printer - Google Patents
Method for detecting printed label by using reflection and printer Download PDFInfo
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- CN116080286A CN116080286A CN202211743284.4A CN202211743284A CN116080286A CN 116080286 A CN116080286 A CN 116080286A CN 202211743284 A CN202211743284 A CN 202211743284A CN 116080286 A CN116080286 A CN 116080286A
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- label
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- label paper
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- 238000000034 method Methods 0.000 title claims abstract description 33
- 238000005070 sampling Methods 0.000 claims abstract description 46
- 238000001514 detection method Methods 0.000 claims abstract description 39
- 238000013507 mapping Methods 0.000 claims 1
- 238000010586 diagram Methods 0.000 description 4
- 238000013500 data storage Methods 0.000 description 3
- 238000002310 reflectometry Methods 0.000 description 3
- 238000009825 accumulation Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000002834 transmittance Methods 0.000 description 1
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J29/00—Details of, or accessories for, typewriters or selective printing mechanisms not otherwise provided for
- B41J29/38—Drives, motors, controls or automatic cut-off devices for the entire printing mechanism
- B41J29/393—Devices for controlling or analysing the entire machine ; Controlling or analysing mechanical parameters involving printing of test patterns
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
- B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
- B41J11/00—Devices or arrangements of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
- B41J11/0095—Detecting means for copy material, e.g. for detecting or sensing presence of copy material or its leading or trailing end
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Abstract
The invention provides a method for detecting a printed label by using reflection and a printer, wherein the method comprises the following steps: selecting the type and specification of label paper, and generating a corresponding maximum mileage of the motor; controlling the label paper to move, and collecting a reflection signal, wherein the reflection signal is a sampling voltage obtained by detecting the moving label paper by using a reflection sensor, and comprises a first sampling voltage generated by detecting the reflection of a label part in the label paper and a second sampling voltage generated by detecting the reflection of a label part; and the method is characterized in that a judgment is carried out in the maximum mileage of the primary motor, whether the second sampling voltage is acquired twice in the maximum mileage of the primary motor is taken as a judgment basis, if so, the mark part in the label paper is detected twice in the maximum mileage of the primary motor, the label paper moves forward by a distance of one label, printing can be continued, the label part and the mark part in the label paper can be detected only by using the reflection sensor, and the compatible detection of various specifications of label paper is realized, so that the cost is low and the compatibility is good.
Description
Technical Field
The invention belongs to the technical field of printers, and particularly relates to a method for detecting a printed label by reflection and a printer.
Background
In the existing label printer, an opposite-emission sensor and a reflection sensor are needed to ensure that label paper is positioned at a correct position in the printing process, wherein the opposite-emission sensor can be used for detecting labels and gaps of the label paper, and the emitted light of the opposite-emission sensor has different transmittances when passing through the labels and the gaps of the label paper, so that the received light is different, and the positions of the labels and the gaps are judged; the presence or absence of the label paper is detected by a reflection sensor, and the reflectance of the presence or absence of the label is different, thereby forming a difference in reflected signals.
However, the two sensors are used for realizing label detection, so that the cost is high, the requirements of the two sensors on the structure are too high under the trend of pursuing a miniaturized printer nowadays, the structure is complex, the miniaturization is not facilitated, and the method for distinguishing and detecting the label paper of different types by using the two sensors in the current printer is complex and has weak compatibility.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a method for detecting a printed label by utilizing reflection and a printer, which are mainly used for solving the problems of high cost, complex structure, weaker compatibility and the like when an opposite-incidence sensor and a reflection sensor are utilized for detection in the prior art.
In order to solve the problems, the technical scheme adopted by the invention is as follows:
in a first aspect, the present invention provides a method of detecting a printed label using reflection, comprising the steps of:
selecting the type and specification of label paper, and generating a corresponding maximum mileage of the motor;
controlling the label paper to move, and collecting a reflected signal, wherein the reflected signal is configured to detect a sampling voltage obtained by the moving label paper by using a reflection sensor, and the reflected signal comprises a first sampling voltage generated by the reflection of a label part in the detection label paper and a second sampling voltage generated by the reflection of a mark part in the detection label paper;
judging once in the maximum mileage of the primary motor, and acquiring whether to obtain twice second sampling voltages;
if yes, the detection is successful, and printing is continued;
if not, continuing to detect.
In some embodiments, in the maximum mileage of the primary motor, the collected reflected signals are stored in a buffer database, the actual mileage of the motor is recorded, when the actual mileage of the motor is greater than the generated maximum mileage of the motor, the data in the buffer database is cleared, and the next judgment cycle of the maximum mileage of the motor is entered.
In some embodiments, the length of travel of the transported label paper in the motor's maximum range is greater than the length of an individual label in the label paper.
In some embodiments, in the maximum mileage of the motor, if two second sampling voltages are acquired, data in the buffer database is cleared, the actual mileage of the motor is set to zero, the actual mileage is recorded again, and the second sampling voltage acquired by the second acquisition in the previous judging cycle is taken as the second sampling voltage acquired by the first acquisition in the next judging cycle, so that the cycle is performed.
In some embodiments, a plurality of different label papers are preset into a plurality of different printing modes, each of which maps with a corresponding label paper type and specification, a motor maximum mileage, a mark portion form, and the intensity of a detection signal emitted by a reflective sensor.
In some embodiments, in each printing mode, the intensity of the detection signal emitted by the reflective sensor is adjusted such that a first sampling voltage generated by reflection of the detection signal via a label portion in the label paper is twice or more than a second sampling voltage generated by reflection of the detection signal via a label portion in the label paper.
In some embodiments, each time the motor is controlled, a corresponding reflected signal is collected and the actual mileage of the motor is accumulated.
In some embodiments, the marking portion forms include, but are not limited to, a label slot, a black mark.
In some embodiments, according to the type and specification of the label paper, the position of the reflective sensor is adjusted, the reflective signals on the left and right sides of the label paper are collected, whether the sampling voltage difference value of the two reflective signals is smaller than a threshold value is judged, and if yes, detection is continued; if not, reporting errors, and adjusting the position angle of the label paper.
In a second aspect, the present invention provides a printer employing a method of detecting printed labels using reflection as described above.
Compared with the prior art, the invention at least comprises the following beneficial effects:
different maximum mileage of the motor is set for different label papers, whether the second sampling voltage is acquired twice in the maximum mileage of the primary motor is taken as a judgment basis, if so, the label part in the label paper is detected twice in the maximum mileage of the primary motor, the label paper moves forward by a distance of one label, printing can be continued, the label part and the label part in the label paper can be detected only by using the reflection sensor in the mode, compatible detection of various specifications of label papers is realized, and the cost is low and the compatibility is good.
The invention is described in further detail below with reference to the drawings and the detailed description.
Drawings
The invention will be further described with reference to the accompanying drawings, in which embodiments do not constitute any limitation of the invention, and other drawings can be obtained by one of ordinary skill in the art without inventive effort from the following drawings.
FIG. 1 is a flow diagram of a method for detecting printed labels using reflection in accordance with one embodiment.
FIG. 2 is a schematic diagram of a control flow of a buffering database according to an embodiment of the present invention.
Fig. 3 is a schematic diagram of a control flow of the data determination process in the present invention in an embodiment.
FIG. 4 is a schematic diagram of a control flow for position adjustment of a reflective sensor according to an embodiment of the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made apparent and fully in view of the accompanying drawings, in which some, but not all embodiments of the invention are shown. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present invention and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, when it is described that a specific device is located between a first device and a second device, an intervening device may or may not be present between the specific device and the first device or the second device. When it is described that a particular device is connected to other devices, the particular device may be directly connected to the other devices without intervening devices, or may be directly connected to the other devices without intervening devices.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail, but are intended to be part of the specification where appropriate.
The inventors found that:
the current label printer utilizes correlation sensor and reflection sensor to detect the label paper to be convenient for accurately print the mark content to the label paper, and the purpose of detection is whether there is label paper to pass through and the position of detecting is the label part or the mark part of label paper, belongs to the current situation that utilizes a sensor to detect a condition, leads to the quantity of sensor not to be few, and connection structure can't optimize well, can't accomplish the miniaturization. Additionally, if different labels are to be printed, two sensors are also required for control, and compatibility is weak.
In view of this, in order to solve the above existing problems, in a first aspect, referring to fig. 1, the present invention provides a method of detecting a printed label using reflection, comprising the steps of:
selecting the type and specification of label paper, and generating a corresponding maximum mileage of the motor; the label paper has different lengths, and the maximum mileage of the motor corresponding to different lengths is different, which means that the label paper is controlled to move different distances by controlling the number of turns or steps of the motor to rotate so as to adapt to label papers of different types and specifications;
controlling the movement of the label paper, collecting a reflected signal, wherein the reflected signal is configured to detect a sampling voltage obtained by the moving label paper by using a reflective sensor, generally speaking, the reflective sensor is arranged below the label paper, a light emitting part of the reflective sensor emits a detection signal upwards, namely detection light, the detection signal is reflected after being transmitted to the label paper, the generated reflected light irradiates a light receiving part of the reflective sensor to form the reflected signal, preferably, after the reflected light is received by the light receiving part, the corresponding sampling voltage is generated according to the intensity of the reflected light, wherein the reflected signal comprises a first sampling voltage generated by the reflection of a label part in the label paper and a second sampling voltage generated by the reflection of a label part in the label paper, and because at least two parts exist in the label paper, namely the label part and the label part, the distance between the two label parts is larger than or equal to the length of one label part, the reflectivity of the detection light is different, and the generated sampling voltages are different, so that the first sampling voltage and the second sampling voltage with different values are formed;
taking the maximum mileage of the primary motor as a cycle unit for judgment, and judging once in the maximum mileage of each motor, and acquiring whether to obtain twice second sampling voltages;
if so, the mark part in the label paper is detected twice in the maximum mileage of the primary motor, the label paper moves forward by a distance of one label, the detection is successful, and printing is continued;
if not, the mark part in the label paper is not detected twice in the maximum mileage of the primary motor, the forward moving distance of the label paper is less than the distance of one label, and the detection is continued.
Preferably, the length of the label paper moving in the maximum mileage of the primary motor is longer than the length of the single label in the label paper, if the length of the single label in the moving direction is 30mm, the label paper can move 32mm in the maximum mileage of the primary motor, a certain margin is reserved, and a data sample for judgment is added.
Referring to fig. 2, as an embodiment, in order to make the control process of detecting by using the reflected signal more concise, avoiding complex data storage and processing, in a maximum mileage of a motor, the collected reflected signal is stored in a buffer database, and the actual mileage of the motor is recorded, when the actual mileage of the motor is greater than the generated maximum mileage of the motor, the data in the buffer database is cleared, and the next judgment cycle of the maximum mileage of the motor is entered.
It should be noted that, the printer only needs to set a buffer database, in which only the data generated in the maximum mileage of the motor is stored, including but not limited to, in the maximum mileage of the motor, along with the forward movement of the label paper, the collected reflection signals include the first sampling voltage and the second sampling voltage, and the generated data also includes the actual mileage of the motor representing the forward movement distance of the label paper. The data storage and the data judgment processing are divided into two independent steps, the storage state of the buffer database is only related to the actual mileage of the motor, corresponding reflection signals are further collected every time the motor is controlled, the actual mileage of the motor is accumulated, the two data of the reflection signals and the actual mileage are stored, and the buffer database is cleared immediately and the data storage is carried out again whenever the actual mileage of the motor exceeds the maximum mileage of the motor.
Referring to fig. 3, for the data determining process link, more specifically, in the maximum mileage of a motor, with the gradual accumulation of the actual mileage of the motor, the reflected signals stored in the buffer database are determined, if the accumulation is collected to obtain two second sampling voltages, the detection is proved to be successful, while continuing printing, the data in the buffer database is cleared, the actual mileage of the motor is zeroed, recording is restarted, and the second sampling voltage obtained by the second collection in the previous determining cycle is taken as the second sampling voltage obtained by the first collection in the next determining cycle, so that the cycle is performed.
Therefore, in the running process of the maximum mileage of each motor, after the data in the buffer database is cleared, the data of the first second sampling voltage is automatically generated, the actual mileage of the corresponding motor is 0 at this moment and is taken as a starting mark, in the next running process of the motor, the first sampling voltage is acquired for a plurality of times, when the second sampling voltage appears, the first sampling voltage represents that the marking part in the next label paper is reached, namely, the label paper moves forward by one label distance, and the cycle is performed.
In this embodiment, a plurality of different label papers are preset into a plurality of different printing modes, each printing mode is mapped with a corresponding label paper type and specification, a motor maximum mileage, a mark part form and intensity of detection signals sent by a reflection sensor, when different label papers need to be printed, only a corresponding printing mode, such as a 30mm printing mode, a 50mm printing mode and the like, is needed to be selected on a control screen of the printer, and each printing mode has corresponding printing control factors, including but not limited to a label paper type and specification, a motor maximum mileage, a mark part form and intensity of detection signals sent by a reflection sensor, wherein the label paper type and specification can be divided into a length of a label part of the label paper, a thickness of the label paper, a color and the like; at different label part lengths, there is a corresponding maximum motor mileage, for example, when the label part is 30mm, the label paper can be moved 32mm at one motor maximum mileage, the step size of the motor can be 100 steps, when the label part is 50mm, the label paper can be moved 53mm at one motor maximum mileage, and the step size of the motor can be 165 steps; the mark part forms include, but are not limited to, a label gap and a black mark, wherein the label gap is the label gap, and the label gap exists between two label parts, the black mark is the black mark, and the black mark exists at the same position of each label; naturally, since the tag slit is a slit outside the tag part, and the black mark is a special position in the tag part, the reflectivity of the two can be distinguished, and the intensity of the detection signal sent by the reflection sensor can be adjusted in order to ensure that the collected reflection signal is in a more reasonable range.
More specifically, in each printing mode, the intensity of the detection signal emitted from the reflection sensor is adjusted so that the first sampling voltage generated by reflection of the detection signal via the label portion in the label paper is twice or more the second sampling voltage generated by reflection of the detection signal via the label portion in the label paper.
Because the reflectivity of the mark part is smaller, the value of the generated second sampling voltage is lower, and the value of the first sampling voltage generated by the label part is larger, in order to improve the value difference between the two, the accuracy in data judgment processing is ensured, and the intensity of the detection signal sent by the reflection sensor is controlled, so that the value of the first sampling voltage generated by the reflection sensor under different label papers is twice or more than that of the second sampling voltage, and the detection precision is improved.
Referring to fig. 4, as an embodiment, according to the type and specification of the label paper, in order to adapt to the widths of different label papers, for example, the different black labels, the positions of the reflective sensors are adjusted, the reflective signals on the left and right sides of the label paper are collected, when the label paper is wider, the label paper on both ends is easy to shake, and the target objects measured by the two reflective sensors are not necessarily flat, so that whether the sampling voltage difference of the two reflective signals is smaller than a threshold value is judged, if yes, it is proved that the target objects measured by the two reflective sensors are similar or identical, and detection is continued; if not, the difference of the sampling voltage of the two reflection signals is smaller than the threshold value, and the error is reported at the moment, a certain sound-light signal is sent out, so that a user can adjust the position angle of the label paper, and printing is continued after the position angle is adjusted to be flat.
In a second aspect, the present invention provides a printer for applying a method of detecting a printed label using reflection as in the above embodiments, and accordingly, the printer comprising a printhead, a transfer roller, a motor, a reflection sensor for detecting label paper passing through the printhead, the motor controlling the transfer roller to rotate to transfer label paper forward, and a controller electrically connected to the reflection sensor and the motor, respectively, the controller comprising a storage medium containing computer executable instructions which when executed by a computer processor implement a method of detecting a printed label using reflection as in the above embodiments.
In summary, compared with the prior art, the embodiment provides a method and a printer for printing labels by using reflection detection, which are characterized in that different maximum mileage of a motor is set for different label paper, and whether two second sampling voltages are acquired in the maximum mileage of a primary motor is taken as a judgment basis, if yes, the label paper is moved forward by a distance of one label, and printing can be continued, and in this way, the label part and the label part in the label paper can be detected by using only a reflection sensor, and compatible detection of various label paper specifications is realized, so that the cost is low and the compatibility is good.
The above embodiments are only preferred embodiments of the present invention, and the scope of the present invention is not limited thereto, but any insubstantial changes and substitutions made by those skilled in the art on the basis of the present invention are intended to be within the scope of the present invention as claimed.
Claims (10)
1. A method for detecting a printed label using reflection, comprising the steps of:
selecting the type and specification of label paper, and generating a corresponding maximum mileage of the motor;
controlling the label paper to move, and collecting a reflected signal, wherein the reflected signal is configured to detect a sampling voltage obtained by the moving label paper by using a reflection sensor, and the reflected signal comprises a first sampling voltage generated by the reflection of a label part in the detection label paper and a second sampling voltage generated by the reflection of a mark part in the detection label paper;
judging once in the maximum mileage of the primary motor, and acquiring whether to obtain twice second sampling voltages;
if yes, the detection is successful, and printing is continued;
if not, continuing to detect.
2. The method for detecting a printed label by using reflection according to claim 1, wherein the collected reflection signal is stored in a buffer database in a maximum mileage of one motor, and an actual mileage of the motor is recorded, and when the actual mileage of the motor is greater than the generated maximum mileage of the motor, data in the buffer database is cleared, and a next judgment cycle of the maximum mileage of the motor is entered.
3. A method of detecting printed labels using reflection according to claim 2 in which the length of travel of the transported label paper in the maximum range of the motor is greater than the length of a single label in the label paper.
4. A method of detecting printed labels by reflection according to claim 2 wherein in a single motor maximum mileage, if two second sampled voltages are acquired, the data in the buffer database is cleared, the actual mileage of the motor is zeroed, and the second sampled voltage acquired for the second acquisition in the previous decision cycle is re-recorded as the second sampled voltage acquired for the first acquisition in the next decision cycle, and so on.
5. The method of detecting printed labels using reflection according to claim 4 wherein a plurality of different label sheets are preset into a plurality of different printing modes, each of the printing modes mapping a corresponding label sheet type and specification, motor maximum mileage, label portion form, intensity of detection signal from the reflection sensor.
6. The method of claim 5, wherein in each printing mode, the intensity of the detection signal from the reflective sensor is adjusted such that the first sampled voltage reflected by the detection signal through the label portion of the label paper is twice or more than the second sampled voltage reflected by the detection signal through the label portion of the label paper.
7. The method for detecting printed labels with reflection according to claim 5 wherein each motor row is further controlled to collect corresponding reflected signals and accumulate actual mileage of the motor.
8. A method of detecting a printed label using reflection according to claim 5, wherein the mark portion forms include, but are not limited to, a label slit, a black mark.
9. The method for detecting a printed label by using reflection according to any one of claims 1 to 8, wherein the position of the reflection sensor is adjusted according to the type and specification of the label paper, the reflection signals on the left and right sides of the label paper are collected, whether the difference between the sampling voltages of the two reflection signals is smaller than a threshold value is judged, and if yes, the detection is continued; if not, reporting errors, and adjusting the position angle of the label paper.
10. A printer applying a method of detecting printed labels using reflection according to any one of claims 1 to 9.
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| CN202211743284.4A CN116080286B (en) | 2022-12-30 | 2022-12-30 | Method for detecting printed label by using reflection and printer |
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| CN202211743284.4A CN116080286B (en) | 2022-12-30 | 2022-12-30 | Method for detecting printed label by using reflection and printer |
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| CN116080286B (en) | 2024-03-01 |
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