CN111813352B - Printing paper shortage detection method, device, equipment and storage medium - Google Patents
Printing paper shortage detection method, device, equipment and storage medium Download PDFInfo
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- CN111813352B CN111813352B CN202010499192.0A CN202010499192A CN111813352B CN 111813352 B CN111813352 B CN 111813352B CN 202010499192 A CN202010499192 A CN 202010499192A CN 111813352 B CN111813352 B CN 111813352B
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1202—Dedicated interfaces to print systems specifically adapted to achieve a particular effect
- G06F3/1203—Improving or facilitating administration, e.g. print management
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/12—Digital output to print unit, e.g. line printer, chain printer
- G06F3/1201—Dedicated interfaces to print systems
- G06F3/1223—Dedicated interfaces to print systems specifically adapted to use a particular technique
- G06F3/1229—Printer resources management or printer maintenance, e.g. device status, power levels
- G06F3/1234—Errors handling and recovery, e.g. reprinting
Abstract
The invention discloses a method, a device, equipment and a storage medium for detecting printing paper shortage, wherein the method comprises the following steps: when a printing instruction is received, controlling a paper feeding module to feed paper; receiving a detection voltage signal sent by a photoelectric receiver positioned in a paper feeding channel in the paper feeding process; judging whether the paper is in a paper-out state at present according to the detection voltage signal; if not, setting the paper-out and paper-feeding length stored in the register to zero; if so, updating the paper-out and paper-feeding length in the register according to the current paper-feeding length; and when the paper-out and paper-feeding length is judged to be larger than a set length threshold value, controlling to stop paper feeding. The invention increases the reference factor of the paper-out and paper-feeding length, and compared with a single voltage threshold judgment condition, the invention can filter the condition of paper-out detection error caused by the irradiation of detection light on the printing content to a great extent, and avoid the problem of abnormal printing possibly caused during double-sided printing.
Description
Technical Field
The invention relates to the technical field of printing, in particular to a printing paper shortage detection method, a printing paper shortage detection device, printing paper shortage detection equipment and a storage medium.
Background
A printer is one of the output devices of a computer that is used to print the results of a computer process on an associated medium, such as paper. Generally, before printing by a printer, a printed medium needs to be checked, for example, whether paper is used up or not is not loaded, so as to avoid the situation of paper shortage printing.
One of the more common inspection methods is to provide a photo-electric pair in the paper path, which includes a photo-electric transmitter and a photo-electric receiver on the same side of the paper path. During detection, the photoelectric emitter sends detection light, when paper exists in the paper feeding channel, the photoelectric receiver can receive the light reflected by the paper to form a conductive channel, and an optical signal is converted into a voltage signal; when no paper exists in the paper feeding channel, no detection light or only little detection light is reflected back, and the voltage signal which is not converted or is weak. Therefore, whether paper for printing exists in the paper feeding channel of the printer can be judged by setting a voltage threshold value and comparing the voltage threshold value with the currently detected voltage signal, and if no paper exists, a corresponding prompt is sent out to inform a user of paper feeding.
Disclosure of Invention
The inventor finds that when double-sided printing is performed or printing is performed by using the other side of paper printed on one side, misjudgment of paper shortage can easily occur, namely, when paper exists in a paper feeding channel, the prompting of paper shortage still can occur.
The inventor further found that this is because, in the above case, the detection light emitted by the photoelectric emitter is irradiated on the print content, and since the print content is usually black and does not substantially reflect the detection light, the light received by the photoelectric receiver is small similar to the paper-out state, which may cause the printer to mistakenly assume that the paper is used up or not loaded, resulting in abnormal printing.
In view of the above, the present invention provides a method, an apparatus, a device and a storage medium for detecting paper shortage, which can avoid the problem of paper shortage misjudgment in some printing situations.
The embodiment of the invention provides a printing paper shortage detection method, which comprises the following steps:
when a printing instruction is received, controlling a paper feeding module to feed paper;
in the paper feeding process, receiving a detection voltage signal sent by a photoelectric receiver positioned in a paper feeding channel;
judging whether the paper is in a paper-out state at present according to the detection voltage signal;
if not, setting the paper-out and paper-feeding length stored in the register to zero;
if so, updating the paper-out and paper-feeding length in the register according to the current paper-feeding length;
and when the paper-out and paper-feeding length is judged to be larger than the set length threshold, controlling to stop paper feeding.
Preferably, whether the paper-out state is currently determined according to the detection voltage signal is specifically:
judging whether the detection voltage signal is larger than a preset voltage threshold value or not;
if not, judging that the paper is in the paper-out state currently;
if yes, judging that the current paper state is the paper state.
Preferably, the paper-out and paper-feeding length is the sum of paper-feeding distances in a paper-out state continuously.
Preferably, the print instruction is generated when it is judged that the detection voltage signal has changed.
Preferably, the print instruction is generated after it is determined that the detection voltage signal has changed for a predetermined time.
The embodiment of the invention also provides a printing paper shortage detection device, which comprises:
the first paper feeding control unit is used for controlling the paper feeding module to feed paper when a printing instruction is received;
the voltage signal receiving unit is used for receiving a detection voltage signal sent by a photoelectric receiver positioned in the paper feeding channel in the paper feeding process;
the paper-out judging unit is used for judging whether the paper-out state exists currently or not according to the detection voltage signal; if not, the zero setting unit is informed, and if yes, the accumulation unit is informed;
the zero setting unit is used for setting the paper-out and paper-feeding length stored in the register to zero;
the accumulation unit is used for updating the paper-out and paper-feeding length in the register according to the current paper-feeding length;
and the second paper feeding control unit is used for controlling to stop paper feeding when the paper shortage and paper feeding length is judged to be larger than the set length threshold.
Preferably, the method further comprises the following steps:
and the printing instruction generating unit is used for generating the printing instruction when the detection voltage signal is judged to be changed.
Preferably, the print instruction generating unit is specifically configured to: and generating the printing instruction when the detection voltage signal is judged to be changed.
The embodiment of the invention also provides a printing paper-out detection device, which comprises a paper feeding module arranged in the paper feeding channel, a photoelectric receiver, a photoelectric emitter and a controller, wherein the photoelectric receiver and the photoelectric emitter are positioned on the same side of the paper feeding channel, the controller is electrically connected with the paper feeding module, the photoelectric receiver and the photoelectric emitter, and the controller is configured to execute a computer program stored in the controller so as to realize the printing paper-out detection method.
The embodiment of the present invention further provides a computer-readable storage medium, in which a computer program is stored, where the computer program can be executed by a processor of a printing device where the computer-readable storage medium is located, so as to implement the printing paper shortage detection method.
In the above embodiment, since the reference factor of the paper-out and paper-feeding length is increased, compared with a single voltage threshold judgment condition, the condition of paper-out detection error caused by irradiation of detection light on the print content can be filtered to a great extent, and the problem that normal printing cannot be performed possibly during double-sided printing is avoided.
Drawings
In order to more clearly illustrate the technical solution of the present invention, the drawings required to be used in the embodiments will be briefly described below, and obviously, the drawings in the following description are only some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flow chart of a printing paper-out detection method according to a first embodiment of the present invention.
Fig. 2 is a schematic structural diagram of a printing paper-out detection apparatus according to a second embodiment of the present invention.
Fig. 3 is a schematic structural diagram of a printing-out detection apparatus according to a third 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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Referring to fig. 1, an embodiment of the present invention provides a printing-out detection method, which can be executed by a printing-out detection device (hereinafter referred to as a detection device), and in particular, executed by one or more processors in the detection device, so as to implement the following steps:
and S101, controlling the paper feeding module to feed paper when a printing instruction is received.
In this embodiment, the detection device is a printer that can print based on received external print data to reproduce the print data on a print medium, for example, on a sheet of paper. The paper can be stored in a paper storage bin inside the printer or can be placed at a paper inlet outside the printer, and the invention is not particularly limited.
In this embodiment, generally speaking, the printer is connected with an external upper computer (such as a computer, an intelligent mobile terminal, a cloud server, and the like) in advance, the external upper computer sends data to be printed to the printer when the data needs to be printed, and the printer generates a printing instruction after receiving the printing data, and controls the paper feeding module to feed paper so as to transmit a printing medium to a printing head direction to realize printing.
In this embodiment, the paper feeding module may include a paper feeding motor, a paper feeding rubber roller and a corresponding transmission structure, the paper feeding rubber roller is located in the paper feeding channel, and the paper feeding motor is in transmission connection with the paper feeding rubber roller through the transmission structure, so as to control rotation of the paper feeding rubber roller, and thus, transport of the printing medium is achieved.
S102, in the paper feeding process, receiving a detection voltage signal sent by a photoelectric receiver in a paper feeding channel.
S103, judging whether the paper is in a paper-out state at present according to the detection voltage signal; if not, executing S104, if yes, executing S105;
s104, setting the paper-out and paper-feeding length stored in the register to zero;
s105, updating the paper-out and paper-feeding length in the register according to the current paper-feeding length;
and S106, controlling to stop paper feeding when the paper-out and paper feeding length is judged to be larger than the set length threshold.
In this embodiment, at least one pair of photoelectric sensors for detecting whether paper is out of paper is arranged at a predetermined position in the paper feeding path, and the photoelectric sensors include a photoelectric emitter and a photoelectric receiver which are positioned on the same side of the paper feeding path. The general detection principle is as follows: when the detection is carried out, the photoelectric emitter sends detection light, and when paper (the paper is usually white or light in color and has high reflectivity) exists in the paper feeding channel, the photoelectric receiver can receive the light reflected by the paper to form a conductive channel, and an optical signal is converted into a voltage signal; when no paper exists in the paper feeding channel, no detection light or only little detection light is reflected back, and the voltage signal which is not converted or is weak. Therefore, whether paper for printing exists in the paper feeding channel of the printer can be judged by setting a voltage threshold value and comparing the voltage threshold value with the currently detected voltage signal.
However, in some cases, for example, when performing double-sided printing or printing with the other side of a piece of paper that has been printed on one side, it may happen that the detection light emitted by the photoemitter irradiates the existing print content, and since the print content is usually black and does not substantially reflect the detection light, the emission light received at the photoreceiver is small similar to the paper-out state, which may cause the printer to mistakenly assume that the paper is used up or not loaded, and thus the printer cannot normally perform printing.
For this reason, in the present embodiment, in addition to the detected voltage signal, a determination parameter of the paper-out feed length is further set. The paper-out and paper-feeding length is the sum of paper-feeding distances in a continuous paper-out state.
Specifically, in this embodiment, the register of the printer stores the parameter of the paper-out feed length. In the printing process, the printer judges whether the current paper-out state is the paper-out state according to the current detection voltage signal; if not, the paper-out and paper-feeding length stored in the register is set to zero. If so, updating the paper-out and paper-feeding length in the register according to the current paper-feeding length, and further judging whether the paper-out and paper-feeding length is larger than a set length threshold value, if so, indicating that no paper is detected within a long paper-feeding distance, and if so, indicating that no paper is probably detected, and reminding a user of replacing the paper in time. If not, the situation is that the paper shortage judgment is still possibly caused by the black content on the paper, and the paper feeding is required to be continued to avoid the misjudgment.
In summary, the printing paper-out detection method provided by this embodiment can greatly filter the paper-out detection error caused by the irradiation of the detection light on the print content compared with the single voltage threshold determination condition due to the increase of the reference factor of the paper-out and paper-feeding length, thereby avoiding the problem of abnormal printing possibly caused during the duplex printing.
On the basis of the above-described embodiment, in a preferred embodiment of the present invention, the print instruction is generated when it is judged that the detection voltage signal has changed.
The embodiment is mainly used for the condition that the printing medium is externally arranged on the printer, for example, for some printers, the printing medium needs to be manually fed into the paper feeding port to be printed. In this case, generally, the photoelectric sensor of the printer detects that the paper feeding and printing operations are performed on the side of the printing medium.
However, if the black print content of the print medium is directly opposite to the photosensor of the printer at this time, there may be a case where the printer cannot detect the print medium, and the paper feeding operation is not performed.
Therefore, in this embodiment, when the printer detects, it is not only determined whether the current detection voltage is greater than the preset voltage threshold, but also determined whether the detection voltage changes, and although the black printing content of the paper shortage and the printing medium is opposite to the photoelectric sensor of the printer, the detection voltage values of the paper shortage and the printing medium are different, it is determined whether something is placed at the paper feeding port according to the change of the detection voltage values, so as to avoid the problem of abnormal paper feeding.
On the basis of the above embodiment, in a preferred embodiment of the present invention, the print instruction is generated after it is determined that the detection voltage signal has changed for a predetermined time.
In the above-described embodiment, paper feeding is performed when the detection voltage signal changes, however, fluctuation of the detection voltage may be caused because of a change in the light or the position angle of the printer.
For this embodiment, in order to avoid erroneous judgment due to the transient fluctuation, it is necessary to generate the print instruction to perform the paper feeding operation after the change continues for a predetermined time.
Referring to fig. 2, a second embodiment of the present invention further provides a printing paper-out detection apparatus, including:
a first paper feeding control unit 210 configured to control the paper feeding module to feed paper when receiving a print instruction;
a voltage signal receiving unit 220, configured to receive a detection voltage signal sent by a photoelectric receiver located in the paper feeding path during paper feeding;
a paper shortage determining unit 230, configured to determine whether a paper shortage state is currently set according to the detection voltage signal; if not, the zero setting unit 240 is notified, and if yes, the accumulation unit 250 is notified;
a zero setting unit 240, configured to set the paper-out and paper-feeding length stored in the register to zero;
an accumulating unit 250, configured to update the paper-out and paper-feeding length in the register according to the current paper-feeding length;
and the second paper feeding control unit 260 is used for controlling to stop paper feeding when the paper-out and paper feeding length is judged to be larger than the set length threshold.
Preferably, the paper-out and paper-feeding length is the sum of paper-feeding distances in a paper-out state continuously.
Preferably, the method further comprises the following steps:
and the printing instruction generating unit is used for generating the printing instruction when the detection voltage signal is judged to be changed.
Preferably, the print instruction generating unit is specifically configured to: and generating the printing instruction when the detection voltage signal is judged to be changed.
Referring to fig. 3, a printing paper-out detection apparatus according to a third embodiment of the present invention further provides a paper feeding module 310 disposed in the paper feeding path, a photo sensor 320 (including a photo receiver and a photo emitter), a controller 330 and a power source 340, wherein the photo sensor 320 is located on the same side of the paper feeding path, the controller 330 is electrically connected to the paper feeding module 310, the photo receiver and the photo emitter, and the power source 340, and the controller 330 is configured to execute a computer program stored therein to implement the printing paper-out detection method.
The fourth embodiment of the present invention also provides a computer-readable storage medium, which stores a computer program, where the computer program can be executed by a processor of a printing apparatus where the computer-readable storage medium is located, so as to implement the printing out-of-paper detection method as described above.
In the embodiments provided in the embodiments of the present invention, it should be understood that the disclosed apparatus and method may be implemented in other manners. The apparatus and method embodiments described above are illustrative only, as the flowcharts and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of apparatus, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of code, which comprises one or more executable instructions for implementing the specified logical function(s). It should also be noted that, in some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions.
In addition, the functional modules in the embodiments of the present invention may be integrated together to form an independent part, or each module may exist separately, or two or more modules may be integrated to form an independent part.
The functions may be stored in a computer-readable storage medium if they are implemented in the form of software functional modules and sold or used as separate products. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, an electronic device, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk, or an optical disk, and various media capable of storing program codes. It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (7)
1. A printing paper shortage detection method is characterized by comprising the following steps:
when a printing instruction is received, controlling a paper feeding module to feed paper;
receiving a detection voltage signal sent by a photoelectric receiver positioned in a paper feeding channel in the paper feeding process;
judging whether the paper is in a paper-out state at present according to the detection voltage signal;
if not, setting the paper-out and paper-feeding length stored in the register to zero;
if so, updating the paper-out and paper-feeding length in the register according to the current paper-feeding length; the paper-out and paper-feeding length is the sum of paper-feeding distances in a continuous paper-out state;
when the paper missing and feeding length is judged to be larger than a set length threshold value, controlling to stop feeding paper;
wherein, judging whether the paper-out state is currently the paper-out state according to the detection voltage signal specifically comprises: judging whether the detection voltage signal is larger than a preset voltage threshold value or not; if not, judging that the paper is in the paper-out state currently; if yes, judging that the current paper state is the paper state.
2. The printing paper shortage detection method according to claim 1, wherein the print instruction is generated when it is judged that the detection voltage signal has changed.
3. The printing paper shortage detection method according to claim 2, wherein the print instruction is generated after it is judged that the detection voltage signal has changed for a predetermined time.
4. A print starvation detection device, comprising:
the first paper feeding control unit is used for controlling the paper feeding module to feed paper when a printing instruction is received;
the voltage signal receiving unit is used for receiving a detection voltage signal sent by a photoelectric receiver positioned in the paper feeding channel in the paper feeding process;
the paper shortage judging unit is used for judging whether the paper shortage state exists currently or not according to the detection voltage signal; if not, the zero setting unit is informed, and if yes, the accumulation unit is informed;
the zero setting unit is used for setting the paper-out and paper-feeding length stored in the register to zero;
the accumulation unit is used for updating the paper-out and paper-feeding length in the register according to the current paper-feeding length; the paper-out and paper-feeding length is the sum of paper-feeding distances in a continuous paper-out state;
the second paper feeding control unit is used for controlling to stop paper feeding when the paper shortage paper feeding length is judged to be larger than a set length threshold;
wherein, judging whether the paper-out state is currently the paper-out state according to the detection voltage signal specifically comprises: judging whether the detection voltage signal is larger than a preset voltage threshold value or not; if not, judging that the paper is in the paper-out state currently; if yes, judging that the current paper state is the paper state.
5. The print out detection apparatus of claim 4, further comprising:
and the printing instruction generating unit is used for generating the printing instruction when the detection voltage signal is judged to be changed.
6. A printing paper-out detection device, comprising a paper feeding module disposed in a paper feeding channel, a photoelectric receiver and a photoelectric transmitter disposed on the same side of the paper feeding channel, and a controller, wherein the controller is electrically connected to the paper feeding module, the photoelectric receiver and the photoelectric transmitter, and the controller is configured to execute a computer program stored therein to implement the printing paper-out detection method according to any one of claims 1 to 3.
7. A computer-readable storage medium, characterized in that a computer program is stored, which is executable by a processor of a printing apparatus in which the computer-readable storage medium is located, to implement the print-out detection method according to any one of claims 1 to 3.
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| CN112606575B (en) * | 2020-12-22 | 2022-09-23 | 容大合众(厦门)科技集团股份公司 | Method, device, equipment and storage medium for solving paper shortage misjudgment of printer |
| CN113029010A (en) * | 2021-03-03 | 2021-06-25 | 宝钢湛江钢铁有限公司 | Unmanned wagon balance self-service terminal printer paper roll specification detection device and method |
| CN113787840B (en) * | 2021-07-31 | 2023-04-28 | 厦门汉印电子技术有限公司 | Paper end-of-life detection method, system, terminal and storage medium |
| CN114953780B (en) * | 2022-06-13 | 2023-09-22 | 厦门汉印电子技术有限公司 | Paper storage state detection method and device, printer and storage medium |
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