Printing nozzle control method and system

Abstract

The invention provides a control method and system for a printing nozzle, and the method comprises the steps: the printing waveform of a nozzle hole of a driving nozzle comprises a normal wave band and a micro-motion wave band which respectively correspond to the printing state and the idle state of the nozzle hole, the printed graphic information describes the state of each nozzle hole, and when the nozzle hole is in the printing state, the normal wave band and the micro-motion wave band correspond to the printing state and the idle state of each nozzle hole. The normal wave band of the corresponding waveform is selected to be used for driving the spray hole to spray ink; when the spraying hole is in the idle state, the spraying hole receives a control signal, the control signal is used for controlling whether the spraying hole receives a micro-motion wave band in the waveform to serve as a drive or not, the corresponding micro-motion wave band only acts on the spraying hole when the control signal is started, and otherwise, the spraying hole in the idle state does not receive any drive. According to the method, only one control signal needs to be given to the spray hole, and the printing process cannot be affected. In the printing process, the preset micro-motion wave band amplitude on the printing card board does not need to be interrupted or adjusted, and therefore the printing continuity is guaranteed.

Description

Technical Field

[0001] The present invention relates to the field of printing technology, and in particular to a control method and system for a printing nozzle. Background Art

[0002] The description in this section merely provides background information related to the present disclosure and does not constitute prior art.

[0003] During the printing process, when some nozzles of the print head are in an idle state, if the nozzles do not spray ink for a long time, the ink will easily dry up and become clogged at the nozzles. When the nozzles need to spray ink, they cannot spray ink in time, affecting the quality of printing. Therefore, the ink in the idle nozzles is usually kept in a micro-motion to prevent the ink from drying up at the nozzles, so that the nozzles are always in a relatively unobstructed state. However, the output of this micro-motion band requires precise control to ensure that the ink jitter amplitude is moderate. If the amplitude of the micro-motion band is too small, the ink disturbance at the nozzles is insufficient, and the ink cannot be effectively prevented from drying up, resulting in the failure to spray ink in time when it is needed, affecting the printing effect. When the amplitude of the micro-motion band is too large, the ink may seep out of the nozzles in the non-printing state and contaminate the paper.

[0004] In the prior art, this problem is usually solved by adjusting the amplitude of the micro-motion band, but the amplitude of the micro-motion band on the printing card is preset. If the amplitude of the micro-motion band is to be adjusted during the printing process, the printing process will be affected.

[0005] It should be noted that the above introduction to the technical background is only for the convenience of providing a clear and complete description of the technical solutions of the present invention and for the convenience of understanding by those skilled in the art. It cannot be considered that the above technical solutions are well known to those skilled in the art simply because these solutions are described in the background technology section of the present invention. Summary of the invention

[0006] The technical problem to be solved by the present invention is to provide a control method and system for a printing nozzle.

[0007] In order to solve the above technical problems, the present invention provides a control method for a printing nozzle, the method comprising: a printing waveform for driving a nozzle of the nozzle has a normal band and a micro-motion band, which respectively correspond to the printing state and the idle state of the nozzle, and the printed graphic information describes the state of each nozzle. When the nozzle is in the printing state, the normal band of the corresponding waveform will be selected to drive the nozzle to spray ink; when the nozzle is in the idle state, the nozzle receives a control signal, and the control signal is used to control whether the nozzle receives the micro-motion band in the waveform as a drive, wherein the corresponding signal acts on the nozzle only when the control signal is turned on, otherwise, the nozzle in the idle state does not receive any drive.

[0008] Preferably, when the nozzle hole is in an idle state, the frequency of the nozzle hole being in an open state is proportional to the duration of the nozzle hole being in the idle state.

[0009] Preferably, when the idle time of the nozzle is lower than a preset minimum value, the control signal controls the nozzle to be in a closed state during the idle time, and the nozzle does not accept the micro-motion band as a drive during the idle time.

[0010] Preferably, during a transition period before the nozzle enters a printing state from an idle state, the control signal controls the nozzle to increase the frequency of the opening state, thereby increasing the time during which the micro-motion wave band is selected to act on the nozzle during the transition period.

[0011] The present application also provides a control system for a print head, including a waveform generation module, which is used to generate a printing waveform for the nozzle of the print head according to the image information to be printed, and the printing waveform for driving the nozzle of the print head includes a normal band and a micro-motion band, which respectively correspond to the printing state and idle state of the nozzle; a driving module, when the nozzle is in the printing state, the normal band of the corresponding waveform will be selected to drive the nozzle to eject ink; and a control signal generation module, when the nozzle is in the idle state, the control signal is used to control whether the nozzle receives the micro-motion band in the waveform as a drive, wherein the corresponding micro-motion band acts on the nozzle only when the control signal is turned on, otherwise, the nozzle in the idle state does not accept any drive.

[0012] Preferably, the control signal generating module is further used to adjust the frequency of the nozzle opening state when the nozzle is in an idle state, so that the frequency is proportional to the duration of the nozzle being in the idle state.

[0013] Preferably, the control signal generating module is also used to instruct the nozzle to remain closed during the idle time when the idle time of the nozzle is lower than a preset minimum value, so that the nozzle does not accept the micro-motion band as a drive during the idle time.

[0014] Preferably, the control signal generating module is also used to adjust the control signal to control the nozzle to increase the frequency of the opening state during a transition period before the nozzle enters the printing state from the idle state, thereby increasing the time when the micro-motion band is selected to act on the nozzle during the transition period.

[0015] The present application also provides a printing nozzle, including the micro-motion control system.

[0016] The present application also provides a computer-readable storage medium storing a computer program for executing the method.

[0017] By means of the above technical solution, the beneficial effects of the present invention are as follows:

[0018] A control method and system for a print head of the present invention controls the micro-motion of ink by adjusting the opening frequency of the nozzle. The ink can be appropriately disturbed, and the ink will not be effectively prevented from drying up due to a too small amplitude, nor will the ink seep out of the nozzle in a non-printing state and contaminate the paper due to a too large amplitude. Unlike the prior art that solves the problem by adjusting the amplitude of the micro-motion band, the method of the present application only needs to give the nozzle a control signal and will not affect the printing process. During the printing process, there is no need to interrupt or adjust the amplitude of the micro-motion band preset on the printing card, thereby ensuring the continuity of printing. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the present invention are described clearly and completely below. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0020] It should be noted that, in the description of the present invention, the terms "first", "second", etc. are only used for descriptive purposes and to distinguish similar objects. There is no order of precedence between the two, and they cannot be understood as indicating or implying relative importance. In addition, in the description of the present invention, unless otherwise specified, "plurality" means two or more.

[0021] The present invention provides a control method for a print nozzle, the method comprising: a printing waveform for driving a nozzle of the nozzle has a normal band and a micro-motion band, which correspond to the printing state and the idle state of the nozzle respectively, and the printed graphic information describes the state of each nozzle, when the nozzle is in the printing state, the normal band of the corresponding waveform will be selected to drive the nozzle to eject ink; when the nozzle is in the idle state, the nozzle receives a control signal, and the control signal is used to control whether the nozzle receives the micro-motion band in the waveform as a drive, wherein the corresponding one acts on the nozzle only when the control signal is turned on, otherwise, the nozzle in the idle state does not receive any drive. That is to say, the control signal is used to indicate whether the micro-motion band of the nozzle is selected to act on the nozzle in a specific ignition operation. If the control signal indicates that the micro-motion band does not work, even if the micro-motion band exists in the overall waveform, it will not be actually applied to the nozzle. For example, in the scenario of eight ignition operations, seven of the control signals indicate that the micro-motion band does not work, and only one control signal indicates that the micro-motion band works, so that the frequency of the micro-motion band acting on the nozzle is reduced to one eighth.

[0022] When the nozzle is in an idle state, the frequency of the nozzle being in an open state is proportional to the length of time the nozzle is in an idle state. The longer the idle time of the nozzle, the higher the frequency of the nozzle opening when it just enters the printing state. When the idle time of the nozzle is lower than a preset minimum value, the control signal controls the nozzle to be in a closed state during the idle time, and the nozzle does not accept the micro-motion band as a drive during the idle time. During a transition time period before the nozzle enters the printing state from the idle state, the control signal controls the nozzle to increase the frequency of the open state, thereby increasing the time during the transition time period when the micro-motion band is selected to act on the nozzle. Among them, the minimum value and the length of the transition time period will be affected by actual factors such as the type of ink, and the specific values ​​can be adjusted according to actual conditions.

[0023] The present application also provides a control system for a print nozzle, including a waveform generation module, which is used to generate a print waveform of the nozzle of the print nozzle according to the image information to be printed, and the print waveform of the nozzle of the drive nozzle includes a normal band and a micro-motion band, which correspond to the printing state and idle state of the nozzle respectively; a driving module, when the nozzle is in the printing state, the normal band of the corresponding waveform will be selected to drive the nozzle to eject ink; and a control signal generation module, when the nozzle is in the idle state, the control signal is used to control whether the nozzle receives the micro-motion band in the waveform as a drive, wherein the corresponding micro-motion band acts on the nozzle only when the control signal is turned on, otherwise, the nozzle in the idle state does not accept any drive. The control signal generation module is also used to adjust the frequency of the nozzle in the open state when the nozzle is in the idle state, so that it is proportional to the length of time the nozzle is in the idle state. The control signal generation module is also used to instruct the nozzle to remain in a closed state during the idle time when the idle time of the nozzle is lower than a preset minimum value, so that the nozzle does not accept the micro-motion band as a drive during the idle time. The control signal generating module is also used to adjust the control signal to control the nozzle to increase the frequency of the opening state during a transition period before the nozzle enters the printing state from the idle state, thereby increasing the time when the micro-motion band is selected to act on the nozzle during the transition period.

[0024] The present application also provides a printing nozzle, including the micro-motion control system.

[0025] The present application also provides a computer-readable storage medium storing a computer program for the method.

[0026] A control method and system for a print head of the present invention controls the micro-motion of ink by adjusting the opening frequency of the nozzle. The ink can be appropriately disturbed, and the ink will not be effectively prevented from drying up due to a too small amplitude, nor will the ink seep out of the nozzle in a non-printing state and contaminate the paper due to a too large amplitude. Unlike the prior art that solves the problem by adjusting the amplitude of the micro-motion band, the method of the present application only needs to give the nozzle a control signal and will not affect the printing process. During the printing process, there is no need to interrupt or adjust the amplitude of the micro-motion band preset on the printing card, thereby ensuring the continuity of printing.

[0027] The above-described embodiments are only preferred embodiments for fully illustrating the present invention, and the protection scope of the present invention is not limited thereto. Equivalent substitutions or changes made by those skilled in the art based on the present invention are within the protection scope of the present invention. The protection scope of the present invention shall be subject to the claims.

Claims

1. A method for controlling a print head, characterized in that: The method includes: a printing waveform for driving a nozzle orifice of the nozzle head has a normal band and a micro-motion band, which respectively correspond to the printing state and idle state of the nozzle orifice, and the printed graphic information describes the state of each nozzle orifice. When the nozzle orifice is in the printing state, the normal band of the corresponding waveform will be selected to drive the nozzle orifice to eject ink; when the nozzle orifice is in the idle state, the nozzle orifice receives a control signal, and the control signal is used to control whether the nozzle orifice receives the micro-motion band in the waveform as a drive, wherein the corresponding signal acts on the nozzle orifice only when the control signal is turned on, otherwise, the nozzle orifice in the idle state does not receive any drive.

2. The method according to claim 1, characterized in that When the nozzle hole is in an idle state, the frequency of the nozzle hole being in an open state is proportional to the duration of the nozzle hole being in the idle state.

3. The method according to claim 2, characterized in that When the idle time of the nozzle is lower than a preset minimum value, the control signal controls the nozzle to be in a closed state during the idle time. During the idle time, the nozzle does not accept the micro-motion band as a drive.

4. The method according to claim 2, characterized in that: During a transition period before the nozzle enters a printing state from an idle state, the control signal controls the nozzle to increase the frequency of the opening state, thereby increasing the time during which the micro-motion wave band is selected to act on the nozzle during the transition period.

5. A control system for a print head, characterized in that: It includes a waveform generation module, which is used to generate a printing waveform for the nozzle of the printing nozzle according to the image information to be printed, and the printing waveform for driving the nozzle of the nozzle includes a normal band and a micro-motion band, which respectively correspond to the printing state and idle state of the nozzle; a driving module, when the nozzle is in the printing state, the normal band of the corresponding waveform will be selected to drive the nozzle to eject ink; a control signal generation module, when the nozzle is in the idle state, the control signal is used to control whether the nozzle receives the micro-motion band in the waveform as a drive, wherein the corresponding micro-motion band acts on the nozzle only when the control signal is turned on, otherwise, the nozzle in the idle state does not accept any drive.

6. The system according to claim 5, characterized in that The control signal generating module is also used to adjust the frequency of the nozzle opening state when the nozzle is in an idle state, so that the frequency is proportional to the duration of the nozzle being in the idle state.

7. The system according to claim 6, characterized in that The control signal generating module is also used to instruct the nozzle to remain closed during the idle time when the idle time of the nozzle is lower than a preset minimum value, so that the nozzle does not accept the micro-motion band as a drive during the idle time.

8. The system according to claim 6, characterized in that The control signal generating module is also used to adjust the control signal to control the nozzle to increase the frequency of the opening state during a conversion period before the nozzle enters the printing state from the idle state, thereby increasing the time when the micro-motion band is selected to act on the nozzle during the conversion period.

9. A printing nozzle, characterized in that: Including the micro-motion control system described in any one of claims 5-8.

10. A computer-readable storage medium, characterized in that: A computer program for executing the method according to any one of claims 1 to 4 is stored.