Method and system for controlling paper rubbing time sequence of text printing equipment

Abstract

The invention provides a method and a system for controlling a paper rubbing time sequence of text printing equipment, and relates to the text printing equipment, and the method comprises the following steps: obtaining a first time period T1 when first paper executing the current printing operation passes through a mark position in a paper path; on the basis of the obtained first time period T1, the paper rubbing interval of adjacent paper in the remaining to-be-printed paper executing the printing operation is controlled to be T1 + T2, T2gt; 0. According to the method and the device, the length of the first piece of paper executing the printing operation is obtained, so that the paper rubbing time of the subsequent pieces of paper is dynamically adjusted, the safe distance between the adjacent pieces of paper is ensured, the phenomenon of paper overlapping or too large interval is avoided, and the accuracy of controlling the paper rubbing time by the printing equipment is greatly improved.

Description

TECHNICAL FIELD

[0001] The present application relates to a printing device, and in particular to a method and system for controlling the paper feeding timing of a printing device. BACKGROUND

[0002] A printing device is an office or industrial product for converting and outputting digital information or physical original into physical paper documents, which includes a paper handling part through which the paper is processed in a single sheet form to sequentially move to an imaging part. Specifically, the paper handling part includes a paper feeding mechanism and a paper feeding unit, and the stacked paper is separated in a single sheet form in a paper cassette through the action of the paper feeding mechanism, and then enters a printing paper path at a certain speed under the action of the paper feeding unit to complete subsequent transfer, fixing and other processes.

[0003] Currently, the printing device supports multiple types of paper for printing, such as A4, A5, etc. Different types of paper have different length and width dimensions. The user can set the type of paper to be used when printing, and use the paper placed in the printer paper cassette. However, in actual use scenarios, the type of paper set by the user may be different from the type of paper actually placed in the paper cassette. When the length of the paper corresponding to the set paper type is less than the length of the paper in the paper cassette, the previous paper may not completely enter the printing paper path, and the next paper may have been fed out by the paper feeding mechanism, causing the adjacent papers to overlap in the paper path and causing a paper jam. Conversely, when the length of the paper corresponding to the set paper type is greater than the length of the paper in the paper cassette, the printing interval time of adjacent papers may be too long, reducing the printing efficiency. SUMMARY

[0004] When the paper feeding mechanism (such as the paper cassette or the paper feeding tray) of the printer is not provided with a paper length detection sensor, it is not possible to predict whether the type of paper set by the user when printing is consistent with the size of the paper placed in the paper feeding mechanism, and inconsistency will affect the printing effect. Therefore, the present application provides a method and system for controlling the paper feeding timing of a printing device, which does not change the hardware structure of the paper feeding mechanism, automatically adjusts the paper feeding timing of different length papers, and avoids the problems of paper jam caused by paper overlap or too long printing interval time.

[0005] In a first aspect, an embodiment of the present application provides a method for controlling the paper feeding timing of a printing device, comprising: obtaining a first time period T1 for the first paper of a current print job to pass a marked position in the paper path; performing a paper feeding control process for the remaining to-be-printed media, comprising: based on the obtained first time period T1, controlling the paper feeding interval of adjacent papers in the remaining to-be-printed papers of the print job to be T1+T2, T2>0.

[0006] Preferably, the first time period T1 corresponding to the first paper is compared with a target time period, and if the first time period is not equal to the target time period, a paper feeding control process for the remaining to-be-printed medium is performed, and the target time period is a time period for a paper to pass a mark position in a paper path as indicated by a print parameter of a current print job. If the first time period is equal to the target time period, the paper feeding is performed according to a preset timing.

[0007] Preferably, when a trailing end of the first paper, which is an end on a downstream side of the first paper in a forward direction, leaves the mark position, the paper feeding mechanism is controlled to pick up the adjacent to-be-printed paper of the first paper.

[0008] Preferably, T2 is less than a time for the paper to be conveyed from the paper feeding mechanism to the mark position.

[0009] Preferably, T2 is greater than or equal to a time for the paper to be conveyed from the paper feeding mechanism to the mark position, and a paper feeding interval between the first paper and the adjacent to-be-printed paper is T1+T2.

[0010] Preferably, the method further comprises: When the first time period T1 corresponding to the paper passing the mark position changes during execution of the current print job, the paper with the changed first time period is taken as a new first paper, the first time period corresponding to the new first paper is taken as T1, and the process of performing the paper feeding control for the remaining to-be-printed medium is executed.

[0011] In a second aspect, the application further discloses a system for controlling a paper feeding timing of a printing device, comprising: A receiving module is configured to acquire a first time period T1 for a first paper of a current print job to pass a mark position in a paper path; A first processing module is configured to perform a paper feeding control process for a remaining to-be-printed medium, comprising: The first processing module is in signal connection with the receiving module and is configured to perform the paper feeding control process for the remaining to-be-printed medium, comprising controlling a paper feeding interval between adjacent papers in the remaining to-be-printed papers of the print job to be T1+T2 based on the acquired first time period T1, and T2>0.

[0012] Preferably, the system further comprises: A comparison module is configured to compare a first time period T1 corresponding to the first paper with a target time period, the target time period being a time period for a paper to pass the mark position in the paper path as indicated by a print parameter of a current print job, and when the first time period T1 is not equal to the target time period, triggering the first processing module to perform the paper feeding control process for the remaining to-be-printed medium, and when the first time period T1 is equal to the target time period, triggering the first processing module to perform the paper feeding according to a preset timing.

[0013] Preferably, the system further comprises a second processing module, configured to control the paper-picking mechanism to pick the next paper sheet adjacent to the first paper sheet when the tail of the first paper sheet leaves the marking position, the tail of the first paper sheet being one end of the first paper sheet on the downstream side in the advancing direction.

[0014] Preferably, the first processing module is further configured to execute the paper-picking control flow for the remaining paper sheets to be printed when the first time period T1 corresponding to the paper sheet passing through the marking position changes during execution of the current print job, and take the paper sheet with the changed first time period T1 as a new first paper sheet, and take the first time period corresponding to the new first paper sheet as T1.

[0015] The above scheme of the present application has the following advantages: In the present application, when a print job is executed, the actual length of the first paper sheet on which the print job is executed is obtained by the time equivalent of the time for the paper sheet to completely pass through the marking position, and the paper-picking timing of the subsequent paper sheets to be printed is adaptively adjusted according to the actual length of the first paper sheet, so as to ensure the safety distance between adjacent paper sheets and avoid the phenomenon of paper overlapping or too large spacing, thereby greatly improving the accuracy of the printing equipment in controlling the paper-picking timing.

[0016] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0017] Figure 1 is a flowchart of a method embodiment provided by an embodiment of the present application for controlling the paper-picking timing of a printing device; Figure 2 is a structural schematic diagram of a system embodiment provided by an embodiment of the present application for controlling the paper-picking timing of a printing device. DETAILED DESCRIPTION

[0018] In order to make the technical problems, technical solutions and advantages of the present application clearer, specific embodiments will be described in detail below with reference to the drawings.

[0019] As shown in Figure 1 An embodiment of the present application provides a method for controlling the paper-picking timing of a printing device, comprising the following steps: Step S11: obtaining a first time period T1 for a first paper sheet on which a print job is executed to pass through a marking position in a paper path.

[0020] Step S12: executing a paper-picking control flow for the remaining paper sheets to be printed, comprising: Based on the obtained first time period T1, controlling the paper-picking interval of adjacent paper sheets in the remaining paper sheets to be printed in the print job to be T1+T2, T2>0.

[0021] In the present application, before a user uses a printer to perform a print job, the print job is sent to the printer by a host computer, and the user sets the print paper type to be used on the host computer side of the printer. However, the user often does not confirm whether the print paper type placed at the paper feeding tray (or paper cassette) of the printer is consistent with the set paper type to be used. In the case of consistency, the printer can normally work according to the preset paper feeding timing (corresponding to the paper type set by the user) to perform printing.

[0022] However, in actual application scenarios, there are inevitably cases where the print paper type placed at the paper feeding tray of the printer is different from the print paper type set by the user on the host computer side of the printer, that is, the paper sizes are inconsistent. In this case, if the printer performs printing according to the preset paper feeding timing and printing timing (corresponding to the paper type set by the user), paper jam or a large interval between adjacent print papers may occur.

[0023] To solve the above problems, a length sensor, such as an optical sensor or a mechanical probe, can be arranged at the paper feeding position of the printer to directly measure the length of the paper. The printer can perform a print job according to the paper feeding timing corresponding to the measured length of the paper. However, this will increase the hardware cost and require modification of the structure of the paper cassette or the paper feeding position of the printer.

[0024] To avoid increasing the hardware cost and solve the paper jam problem while ensuring the printing speed, the paper feeding timing of the first paper is calibrated in the present application, and then the paper feeding timing of the subsequent papers is adjusted. Specifically, for a current print job sent by a user, a first time period T1 in which the first paper of the current print job passes a mark position in a paper path is obtained, and the mark position is located at a sensor in the paper path that monitors the presence of the paper. Here, the sensor in the paper path can be any paper path sensor that can monitor the paper, such as a paper leading end sensor, a paper ejection sensor, etc. For example, the time difference between the first paper triggering the paper leading end sensor and releasing the paper leading end sensor is the first time period T1. The time taken by different paper types to completely pass the mark position in the same paper path is different, and the time at which the first paper completely passes the mark position can be equivalent to the length of the paper.

[0025] During the process of obtaining the first time period of the first paper, it is not known whether the paper placed at the paper feeding position is consistent with the paper type set by the user. Therefore, the paper feeding timing control of the print paper adjacent to the first paper is performed after the first time period of the first paper is obtained.

[0026] It should be noted that the paper type set by the user for each print job is not necessarily the same. Therefore, preferably, the paper feeding timing of the first paper is calibrated each time a new print job is performed.

[0027] The remaining to-be-printed paper sheets, except the first paper sheet, are controlled to have a paper feeding interval of T1+T2, T2>0, between adjacent paper sheets. T2 is a safety time margin corresponding to the adjacent paper sheets. It is ensured that the adjacent paper sheets do not overlap.

[0028] In some embodiments, the paper feeding time interval between the first paper sheet and the adjacent to-be-printed paper sheet is T1+T2, i.e., the paper feeding interval between all the adjacent paper sheets completing the current print job is T1+T2, and T2 is greater than or equal to the time used for conveying a paper sheet from the paper feeding mechanism to the marking position.

[0029] The first paper sheet enters the paper path, and the first time period for the paper head and the paper tail to pass through the marking position is T1, which indicates that the conveying of the first paper sheet for T1 can completely pass through the marking position. At this time, the paper feeding mechanism feeds out the second paper sheet, and the paper feeding time interval between the two paper sheets is T1+T2 (T2 is greater than or equal to the time used for conveying a paper sheet from the paper feeding mechanism to the marking position). When the paper tail of the second paper sheet passes through the marking position, the third paper sheet starts to be fed. Since the timing of subsequent paper feeding is adjusted based on the length of the first paper sheet when printing, it is only necessary to determine whether the first to-be-printed paper sheet is user-set. From the software point of view, when the paper sheet being fed completely passes through the paper path sensor (such as a paper head sensor, a paper ejection sensor, etc.), the paper feeding mechanism is controlled to continue to pick up the next paper sheet, for example, after the paper tail passes through and releases the paper path sensor. The paper feeding interval between every two adjacent paper sheets is T1+T2 (T2 is greater than or equal to the time used for conveying a paper sheet from the paper feeding mechanism to the marking position. In this way, the problem of paper jamming is avoided, but the distance between the paper sheets is large, and the printing speed is affected.

[0030] In the foregoing scheme, although the problem of overlapping between adjacent paper sheets is effectively avoided, when the safety margin T2 between adjacent paper sheets is too long, the printing efficiency is also reduced. Therefore, the paper feeding timing is further optimized. Therefore, in some embodiments, the printing efficiency is taken into account, and preferably, for the to-be-printed paper sheet adjacent to the first paper sheet, the paper feeding mechanism is controlled to pick up the to-be-printed paper sheet adjacent to the first paper sheet when the paper tail of the first paper sheet leaves the marking position. The paper tail of the first paper sheet is one end on the downstream side of the first paper sheet in the advancing direction. The safety margin T2 is selected to be less than the time used for conveying a paper sheet from the paper feeding mechanism to the marking position, so as to reduce the paper feeding interval between adjacent paper sheets. Except for the first paper sheet, the paper feeding interval between adjacent paper sheets among the remaining to-be-printed paper sheets is T1+T2, and T2 is less than the time used for conveying a paper sheet from the paper feeding mechanism to the marking position.

[0031] The interval between the first paper and the second paper is greater than the interval between the adjacent papers after the second paper, and after the length of the paper is obtained by the transmission time of the first paper in the paper path, the paper winding time of the subsequent paper can be accurately controlled, the paper after the second paper can be wound in advance to avoid the overlapping of adjacent papers, the interval of the winding time of the adjacent papers after the second paper is shortened, and full-speed printing of the paper after the second paper is realized, and the printing efficiency is considered.

[0032] It should be noted that the aforementioned paper path refers to the path of the paper from being picked up to being transmitted out of the printer. In the existing printing equipment, the paper path is provided with at least a paper leading end sensor and a paper outlet sensor. The paper leading end sensor is usually arranged at the front end of the paper path and is used to monitor the key part of the paper entering the printing position. When the paper passes through the sensor, the paper leading end sensor, for example, a photoelectric sensor, detects the presence of the paper and the length of time the paper passes through by the change of the light signal. Similarly, the paper outlet sensor is arranged at the rear end of the paper path and is a key part for monitoring the paper leaving the printing position. The paper outlet sensor can also be a photoelectric sensor and detects the presence of the paper by the change of the light signal.

[0033] Since the paper to be printed is wound into the paper path and is transmitted at a constant speed in the paper path, the time required for the printed paper to pass through any position in the paper path can be regarded as T1. Therefore, the sensor at any position in the paper path can adjust the winding time of the subsequent paper according to the winding interval T1+T2. For example, taking the paper outlet sensor as an example, after the paper is wound for T1, whether the paper reaches the paper outlet sensor or not, it can be considered that the paper has passed through the corresponding length of the paper. At this time, the next paper is wound, and theoretically, there is no overlapping between the two papers. However, in order to avoid the influence between the two adjacent papers, a safety margin T2 is added.

[0034] In the embodiment, the position of the sensor in the paper path is used as the marking position. The time T1 of the paper passing through is determined by using the existing sensor, and no additional hardware result needs to be arranged on the paper box and the paper path, thereby avoiding the hardware modification of the existing equipment.

[0035] In the present application, the time period T1 of the paper head and paper tail of the paper is calculated by the paper end sensor. Since the light signal changes when the paper passes through the paper end sensor, when the paper head passes through the paper end sensor, the light signal changes for the first time, and the first change of the light signal is the time point when the paper head passes through the paper end sensor, and the first time signal t1 corresponding to the time point is obtained. When the paper tail passes through the paper end sensor, the light signal changes for the second time, and the second change of the light signal is the time point when the paper tail passes through the paper end sensor, and the second time signal t2 corresponding to the time is obtained. The time interval between the second time signal and the first time signal can be obtained to obtain the time period T1 of the paper passing through the paper end sensor, that is, T1=t2-t1.

[0036] For the current print job, after obtaining the first time period of the first paper, the paper feeding time sequence of the remaining papers to be printed in the current print job is controlled according to the time period. In this process, the time of each paper passing through the marking position can no longer be monitored until the current print job is completed.

[0037] In some embodiments, considering that the type of paper placed at the paper inlet of the printer is not unique, the paper feeding is controlled according to the adjusted time sequence during the execution of the current print job. In this process, the first time period of each paper passing through the marking position can still be monitored. During the execution of the current print job, when it is monitored that the first time period T1 of the paper passing through the marking position changes, the paper with the changed first time period T1 is taken as a new first paper, and the first paper calibration is performed again to obtain a new first time period T1 corresponding to the new first paper. According to the new first time period T1 corresponding to the new first paper, the paper feeding interval of the adjacent papers in the remaining papers to be printed in the print job is controlled to be T1+T2, and T2>0.

[0038] For example, the printer paper cassette places LEGAL paper with a length of 355 mm (the user sets to use A4 paper type with a length of 297 mm).

[0039] First paper operation: paper feeding start → paper end sensor triggering; After the paper end sensor is released, it is confirmed that the paper passes completely, and the second paper is fed again. T1=2.5s is recorded, and if the A4 paper type set by the user corresponds to a time of 2.1s.

[0040] Subsequent paper operation: paper feeding interval=2.5s+0.1s (T2)=2.6s, and the paper is continuously fed according to the time sequence.

[0041] Effect: no paper jam throughout the process, and the printing speed after the first paper returns to the preset high-speed mode (23 pages / minute) For the case of multiple paper boxes of the printer, each paper box can record T1 independently, and the corresponding timing is called when switching the paper box.

[0042] Further, in some embodiments, after the first time period T1 of the first paper of the current print job passing the marked position in the paper path is obtained, the first time period T1 can be compared with a target time period first. The target time period is the time period of the paper passing the marked position in the paper path indicated by the print parameters of the current print job. If the first time period T1 is equal to the target time period, it indicates that the paper size in the print parameters set by the user is consistent with the paper size placed at the paper feeding position of the printer, and the paper feeding control according to the preset timing sequence can be performed. The preset timing sequence is the paper feeding control timing sequence corresponding to the paper size in the print parameters.

[0043] When the first time period T1 is not equal to the target time period, it indicates that the paper size in the print parameters set by the user is inconsistent with the paper size placed at the paper feeding position of the printer, and then the paper feeding control flow of the remaining to-be-printed medium is performed. For details, refer to the description of the above embodiments, which will not be repeated here.

[0044] Corresponding to the above method embodiments, the embodiments of the present disclosure also provide a system for controlling the paper feeding timing sequence of a printing device. Referring to the system schematic diagram shown in FIG. 11, the system comprises: Figure 2 a receiving module 21, configured to obtain a first time period T1 of the first paper of a current print job passing a marked position in a paper path; the first time point of the head mark position of the paper is t1 and the second time point of the tail mark position of the paper is t2, and the time period T1 satisfies: T1=t2-t1.

[0045] a first processing module 22, in signal connection with the receiving module 21 and configured to perform a paper feeding control flow of the remaining to-be-printed medium, comprising controlling the paper feeding interval of adjacent papers in the remaining to-be-printed papers of the print job to be T1+T2 based on the obtained first time period T1, T2>0.

[0046] In some embodiments, the system further comprises a comparison module, configured to compare the size of the first time period T1 corresponding to the first paper with a target time period. The size of the target time period is the time period of the paper passing the marked position in the paper path indicated by the print parameters of the current print job. When the first time period T1 is not equal to the target time period, the first processing module 22 is triggered to perform the paper feeding control flow of the remaining to-be-printed medium; when the first time period T1 is equal to the target time period, the first processing module 22 is triggered to perform the paper feeding according to the preset timing sequence.

[0047] ​In some embodiments, the system further comprises a second processing module configured to control the paper-picking mechanism to pick the adjacent to-be-printed paper sheet of the first paper sheet when the paper tail of the first paper sheet leaves the marking position, the paper tail being one end of the first paper sheet on a downstream side of the first paper sheet in the advancing direction.

[0048] In some embodiments, T2 is less than a time used for conveying the paper sheet from the paper-picking mechanism to the marking position.

[0049] In some embodiments, T2 is greater than or equal to a time used for conveying the paper sheet from the paper-picking mechanism to the marking position, and the paper-picking interval between the first paper sheet and the adjacent to-be-printed paper sheet is T1+T2.

[0050] In some embodiments, the first processing module 22 is further configured to, when a first time period T1 corresponding to a paper sheet passing through the marking position changes during a current print job, execute the flow of performing the paper-picking control of the remaining to-be-printed medium as a new first paper sheet corresponding to the changed paper sheet and T1 corresponding to the first time period of the new first paper sheet.

[0051] The processing procedures of the related modules in the embodiments can refer to the descriptions of the related steps in the method embodiments, which will not be repeated here.

[0052] The above describes the preferred embodiments of the present application. It should be noted that, for those skilled in the art, without departing from the principles of the present application, a number of improvements and refinements can be made, which should also be considered as the protection scope of the present application.

Claims

1. A method for controlling the paper feed timing of a printing device, characterized in that, The method comprises: acquiring a first time period T1 of a first paper of a current print job passing a mark position in a paper path; performing a paper feed control process for the remaining print media, comprising: based on the acquired first time period T1, controlling a paper feed interval of adjacent papers of the remaining print media of the print job to be T1+T2, T2>0.

2. The method for controlling the paper feed timing of a printing apparatus according to claim 1, wherein: Further comprising: comparing the first time period T1 of the first paper with a target time period, and if the first time period is not equal to the target time period, performing the paper feed control process for the remaining print media, wherein the target time period is a time period of a paper passing the mark position indicated by a print parameter of the current print job; if the first time period is equal to the target time period, performing paper feed according to a preset timing.

3. The method for controlling the paper feed timing of a printing apparatus according to claim 1, wherein: When a paper tail of the first paper leaves the mark position, the paper feed mechanism is controlled to pick up the adjacent print paper of the first paper, wherein the paper tail of the first paper is one end of the first paper on a downstream side in a forward direction.

4. The method for controlling paper feed timing of a printing device according to claim 3, wherein In the present application: T2 is less than a time used for conveying a paper from the paper feed mechanism to the mark position.

5. The method for controlling the paper feed timing of a printing apparatus according to claim 1, wherein: T2 is greater than or equal to a time used for conveying a paper from the paper feed mechanism to the mark position, and the paper feed interval of the first paper and the adjacent print paper is T1+T2.

6. The method for controlling the paper feed timing of a printing apparatus according to claim 1, wherein The method further comprises: when the first time period T1 of a paper passing the mark position changes during the execution of the current print job, taking the changed paper as a new first paper, taking the first time period T1 of the new first paper as T1, and performing the paper feed control process for the remaining print media.

7. A system for controlling the paper feed timing of a printing device, characterized in that, The system comprises: a receiving module configured to acquire a first time period T1 of a first paper of a current print job passing a mark position in a paper path; a first processing module configured to perform a paper feed control process for the remaining print media, comprising: a second processing module in signal connection with the receiving module and configured to perform the paper feed control process for the remaining print media, comprising based on the acquired first time period T1, controlling a paper feed interval of adjacent papers of the remaining print media of the print job to be T1+T2, T2>0.

8. A system for controlling the timing of the paper feed of a printing device as claimed in claim 7, wherein, Further comprising: a comparison module configured to compare the first time period T1 of the first paper with a target time period, wherein the target time period is a time period of a paper passing the mark position indicated by a print parameter of the current print job; when the first time period T1 is not equal to the target time period, triggering the first processing module to perform the paper feed control process for the remaining print media; and when the first time period T1 is equal to the target time period, triggering the first processing module to perform paper feed according to a preset timing.

9. A system for controlling the timing of the paper feed of a printing device as recited in claim 7, wherein, The system further comprises a second processing module configured to, when a paper tail of the first paper leaves the mark position, control the paper feed mechanism to pick up the adjacent print paper of the first paper, wherein the paper tail of the first paper is one end of the first paper on a downstream side in a forward direction.

10. A system for controlling the paper feed timing of a printing device as recited in claim 7, wherein, The first processing module is further configured to execute the procedure of performing the paper feed control of the remaining printing medium when the first time period T1 corresponding to the paper passing through the marking position changes during the current printing job, and take the changed paper as a new first paper and take the first time period corresponding to the new first paper as T1.

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