Detection method and device of laser device and image forming equipment

Abstract

The embodiment of the invention provides a detection method and device of a laser device and image forming equipment. The method comprises the following steps: during color calibration, judging whether the laser device is abnormal or not based on a first comparison result of a numerical value of an optical power driving voltage and a preset voltage value; or, when the residual life of the photosensitive drum assembly is greater than the preset life value, judging whether the laser device is abnormal or not according to a second comparison result of the actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage. In different working processes of the image forming equipment, whether the laser device is abnormal or not is judged according to the optical power driving voltage or the actual surface potential of the photosensitive drum assembly, and the accuracy of abnormality detection of the laser device is improved.

Description

[Technical field]

[0001] The present invention relates to the field of image forming technology, and in particular to a detection method and device of a laser device and an image forming apparatus. [Background technology]

[0002] The laser device includes a laser scanning unit (Laser Scanner Unit, LSU for short), which is a precision component in an image forming device. However, there is a lack of methods for detecting abnormalities in the laser device or the methods for detecting abnormalities in the laser device are not perfect. Once an abnormality occurs in the laser device, it is difficult for the user to be informed in time, resulting in inconvenience in use. Even if there are methods in the prior art that can detect abnormalities in the laser device, some of them require additional detection components, resulting in increased hardware costs and other problems. [Summary of the invention]

[0003] In view of this, embodiments of the present invention provide a method and device for detecting a laser device, and an image forming device, which are used to perform abnormality detection on the laser device and improve the accuracy of abnormality detection.

[0004] On the one hand, an embodiment of the present invention provides a method for detecting a laser device, comprising:

[0005] During color calibration, judging whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and the preset voltage value; or,

[0006] When the remaining life of the photosensitive drum assembly is greater than a preset life value, the laser device is judged to be abnormal based on a second comparison result between an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage.

[0007] Optionally, it also includes:

[0008] Each time the laser device stops working, it is determined whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and the preset life time.

[0009] Optionally, each time the laser device stops working, judging whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and a preset life time includes:

[0010] Each time the laser device stops working, the total light-emitting duration is generated, and the total light-emitting duration is the time calculated from the time when the laser device is first started to work;

[0011] Determine whether the difference between the total luminous duration and the preset life time is greater than a set life threshold;

[0012] If it is determined that the difference between the total light emission time and the preset life time is greater than a set life threshold, it indicates that the laser device may be abnormal.

[0013] Optionally, each time the laser device stops working, the total light emission duration is generated, including:

[0014] Obtain the number of full-speed printed pages, the number of half-speed printed pages, the full-speed printing time of the full-speed printed pages, and the half-speed printing time of the half-speed printed pages between the time when the laser device first starts working and the time when it stops working this time;

[0015] The total lighting duration is generated according to the full-speed printing number of pages, the half-speed printing number of pages, the full-speed printing time of the full-speed printing number of pages, and the half-speed printing time of the half-speed printing number of pages.

[0016] Optionally, judging whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and a preset voltage value includes:

[0017] Obtaining a current optical power driving voltage, a first temperature corresponding to the current optical power driving voltage, a previous optical power driving voltage, and a second temperature corresponding to the previous optical power driving voltage;

[0018] Determine whether the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage meet a first condition, wherein the first condition is whether the difference between the current optical power driving voltage and the last optical power driving voltage is greater than a first set voltage, and whether the difference between the first temperature and the second temperature is less than a set temperature difference;

[0019] If it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage meet the first condition, it indicates that the laser device is abnormal.

[0020] Optionally, it also includes:

[0021] If it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage do not meet the first condition, then obtaining the absolute value of the change of the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times;

[0022] Determine whether the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet a second condition, wherein the second condition is that the absolute value of the change in the imaging parameter is greater than a preset absolute value, and the fluctuation value of the optical power driving voltage for a preset number of times is greater than a second set voltage;

[0023] If it is determined that the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet the second condition, it indicates that the laser device is abnormal.

[0024] Optionally, the imaging parameters include a developing voltage, a charging voltage or a transfer voltage.

[0025] Optionally, judging whether the laser device is abnormal according to a second comparison result between an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage comprises:

[0026] Comparing the actual surface potential of the photosensitive drum assembly when the optical power driving voltage is applied to the photosensitive drum assembly with the reference surface potential corresponding to the optical power driving voltage, and determining whether the actual surface potential reaches the reference potential;

[0027] If it is not reached, it indicates that the laser device is abnormal.

[0028] On the other hand, an embodiment of the present invention provides a detection device for a laser device, comprising:

[0029] A first judgment module is used to judge whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and a preset voltage value during color calibration; or

[0030] The second judgment module is used to judge whether the laser device is abnormal based on a second comparison result of an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage when the remaining life of the photosensitive drum assembly is greater than a preset life value.

[0031] Optionally, it also includes:

[0032] The third judgment module is used to judge whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and the preset life time each time the laser device stops working.

[0033] On the other hand, an embodiment of the present invention provides an image forming device, including a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, wherein the program instructions, when loaded and executed by the processor, implement the steps of the detection method of the above-mentioned laser device.

[0034] In the technical solution of the detection method of the laser device provided by the embodiment of the present invention, during color calibration, based on the first comparison result of the value of the optical power driving voltage and the preset voltage value, it is judged whether the laser device is abnormal; or, when the remaining life of the photosensitive drum assembly is greater than the preset life value, based on the actual surface potential applied by the optical power driving voltage on the photosensitive drum assembly, and the second comparison result of the reference surface potential corresponding to the optical power driving voltage, it is judged whether the laser device is abnormal. In different working processes of the image forming device, the optical power driving voltage or the actual surface potential of the photosensitive drum assembly is used to judge whether the laser device is abnormal, thereby improving the accuracy of abnormal detection of the laser device. While helping users to find abnormalities of the laser device in time, the layout of the detection device is omitted, and the laser device itself and the changes in its operating parameters under different working conditions can be used to perform abnormal detection of it, thereby saving costs and meeting various detection needs on the premise of helping to realize abnormal detection of the laser device.

Brief Description of the Drawings

[0035] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0036] Figure 1 A flow chart of a method for detecting a laser device provided by one embodiment of the present invention;

[0037] Figure 2 A flow chart of another method for detecting a laser device provided by an embodiment of the present invention;

[0038] Figure 3 A flow chart of another method for detecting a laser device provided by an embodiment of the present invention;

[0039] Figure 4 A schematic diagram of the structure of a first judgment module provided by an embodiment of the present invention;

[0040] Figure 5 A schematic diagram of the structure of a second judgment module provided by an embodiment of the present invention;

[0041] Figure 6 A schematic diagram of the structure of a third judgment module provided by an embodiment of the present invention;

[0042] Figure 7 A schematic diagram of an image forming device provided by an embodiment of the present invention. [Specific implementation method]

[0043] In order to better understand the technical solution of the present invention, the embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0044] It should be clear that the described embodiments are only some embodiments of the present invention, not all 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.

[0045] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms "a", "said" and "the" used in the embodiments of the present invention and the appended claims are also intended to include plural forms, unless the context clearly indicates other meanings.

[0046] It should be understood that the term "and / or" used in this article is only a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent: A exists alone, A and B exist at the same time, and B exists alone. In addition, the character " / " in this article generally indicates that the associated objects before and after are in an "or" relationship.

[0047] An embodiment of the present invention provides a method for detecting a laser device, the method comprising:

[0048] During color calibration, judging whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and the preset voltage value; or,

[0049] Whether the laser device is abnormal is determined based on a second comparison result between an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage.

[0050] During color calibration, whether the laser device is abnormal can be determined based on the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage.

[0051] When the remaining life of the photosensitive drum assembly is greater than the preset life value, the actual surface potential of the photosensitive drum assembly applied with the optical power driving voltage is compared with the reference surface potential corresponding to the optical power driving voltage to determine whether the actual surface potential reaches the reference potential to determine whether the laser device is abnormal.

[0052] In the technical solution provided by the embodiment of the present invention, in different working processes of the image forming device, the optical power driving voltage or the actual surface potential of the photosensitive drum assembly is used to determine whether the laser device is abnormal, thereby improving the accuracy of abnormality detection of the laser device.

[0053] The technical solution provided by the embodiment of the present invention can help users to find abnormalities of the laser device in time, while eliminating the need to deploy detection devices, and can use the laser device itself and the changes in its operating parameters under different working conditions to perform abnormality detection of the laser device. Thus, while helping to realize abnormality detection of the laser device, it can save costs and meet various detection needs.

[0054] An embodiment of the present invention provides a method for detecting a laser device, the method further comprising:

[0055] Each time the laser device stops working, it is determined whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and the preset life time.

[0056] Specifically, from the time when the LSU starts to work to the time when it stops working, the total light emission time of the laser diode is counted. If the difference between the total light emission time and the preset life time is greater than the set life threshold, it is determined that the laser device may be abnormal.

[0057] In the technical solution provided by the embodiment of the present invention, if it is determined that the laser device may be abnormal, although the image forming device may still be used normally, the laser diode may be aged, and the user can be prompted that the laser diode of the laser device is aged, so that the user can be informed of the possible abnormality of the laser device in advance before the image forming device cannot be used normally, which is convenient for the user to repair it in time, so that the image forming device can be in normal state at any time, and the user can use the image forming device at any time.

[0058] The following three specific embodiments are used to describe the detection method of the laser device. Figure 1 A flow chart of a method for detecting a laser device provided by an embodiment of the present invention is as follows: Figure 1 As shown, the method includes:

[0059] Step 102 : during color calibration, obtaining a current optical power driving voltage, a first temperature corresponding to the current optical power driving voltage, a previous optical power driving voltage, and a second temperature corresponding to the previous optical power driving voltage.

[0060] In one embodiment of the present invention, each step is performed by an image forming device. The image forming device includes but is not limited to a printer, a copier, a fax machine, a scanner, and a multifunction machine that integrates printing, copying, faxing, scanning, etc., and its function is to print images or text on an imaging medium.

[0061] In one embodiment of the present invention, the last optical power driving voltage is the optical power driving voltage obtained during the last color calibration. The second temperature corresponding to the last optical power driving voltage is the second temperature corresponding to the optical power driving voltage obtained during the last color calibration.

[0062] Step 104, determine whether the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage and the second temperature corresponding to the last optical power driving voltage meet the first condition, the first condition is whether the difference between the current optical power driving voltage and the last optical power driving voltage is greater than the first set voltage, and whether the difference between the first temperature and the second temperature is less than the set temperature difference, if so, execute step 106; if not, execute step 108.

[0063] In one embodiment of the present invention, if it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage meet the first condition, it indicates that the laser device is abnormal, and the laser device abnormality may include aging of components of the laser device or changes in the properties of components of the laser device, and step 106 is executed; if it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage do not meet the first condition, it indicates that the components of the laser device are normal or the aging of the components of the laser device is not obvious. In order to detect whether the abnormality of the components of the laser device has affected the printing effect, it is further determined whether the laser device is abnormal based on the imaging parameters, and step 108 is executed.

[0064] In one embodiment of the present invention, if the difference between the current optical power driving voltage and the previous optical power driving voltage is less than the first set voltage, but the difference between the first temperature and the second temperature is greater than the set temperature difference, it indicates that the properties of the laser diode (Laser Diode, LD for short) in the laser device may be temporarily changed due to the influence of temperature, and the temperature factor cannot be ruled out. Therefore, if the difference between the first temperature and the second temperature is greater than the set temperature difference, it indicates that there is a sudden temperature change in the laser device, and the imaging parameters measured when the temperature changes suddenly have no reference significance.

[0065] In one embodiment of the present invention, the first set voltage can be set according to actual conditions, for example, the first set voltage is 800 mV. The set temperature difference can be set according to actual conditions, for example, the set temperature difference is 10°C.

[0066] Step 106 , indicating that the laser device is abnormal, and the process ends.

[0067] Step 108: Obtain the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times.

[0068] In one embodiment of the present invention, the imaging parameters include developing voltage, charging voltage or transfer voltage. Each imaging parameter can be compared with the corresponding reference imaging parameter under the current optical power driving voltage to determine whether the absolute value of the change in the imaging parameter is greater than the preset absolute value.

[0069] In one embodiment of the present invention, the fluctuation value of the optical power driving voltage for a preset number of times is the fluctuation value of the optical power driving voltage for a preset number of color calibrations. The preset number of times can be set according to actual conditions. For example, the fluctuation value of the optical power driving voltage for 3 times can be obtained.

[0070] Step 110, determine whether the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet the second condition. The second condition is that the absolute value of the change in the imaging parameter is greater than the preset absolute value, and the fluctuation value of the optical power driving voltage for a preset number of times is greater than the second set voltage. If so, execute step 106; if not, execute step 112.

[0071] In one embodiment of the present invention, the preset absolute value can be set according to actual conditions, for example, the preset absolute value is 50 V. The second set voltage can be set according to actual conditions, for example, 600 mV.

[0072] In one embodiment of the present invention, each imaging parameter is compared with a corresponding reference imaging parameter under the current optical power driving voltage to determine whether the absolute value of the change in the imaging parameter is greater than a preset absolute value.

[0073] In one embodiment of the present invention, the imaging parameters are coupled to the relevant parameters of the LD, and the abnormality of the laser device cannot be determined after the imaging overshoot, and it is necessary to combine the calibration of the LD to determine. Therefore, when the absolute value of the change in the imaging parameter is greater than the preset absolute value, or the fluctuation value of the optical power driving voltage for a preset number of times is greater than the second set voltage, the laser device is not determined to be abnormal.

[0074] In one embodiment of the present invention, the calibration of imaging parameters usually precedes the calibration of LD, and LD can maintain a certain set value during the calibration of imaging parameters. The calibration of imaging parameters is limited by thresholds. For example, the calibration threshold of imaging parameters is -450V to 450V. If the LD is abnormal, the output optical power of 1700mv can be set, but the actual optical power will decay to 850mv. Then, for the overall image effect, the imaging parameters will be calibrated to the limit value of -450V. In the LD calibration stage, the imaging parameter of -450V can be maintained to adjust the optical power driving voltage. At this time, the optical power driving voltage will also show a limit value due to the attenuation, such as out-of-range adjustment.

[0075] There is a relative relationship between the optical power driving voltage and the change of imaging parameters, but it is not absolute. For example, when the imaging parameter is -450V, if the optical power attenuation overshoot is 2450mv, it can still work from the perspective of image quality. At this time, the imaging parameter corresponding to the optical power of 2450mv is -150V. If the numerical difference between the imaging parameters of -450V and -150V is too large, the laser device is considered abnormal. Usually, the range of the optical power driving voltage can be set to 0-3300mv, which is much larger than the imaging parameter range, so the corresponding relationship between the optical power driving voltage and the imaging parameter can be many-to-one, and the imaging parameter is generally not an extreme value.

[0076] Step 112: Indicate that the laser device is normal.

[0077] In the technical solution provided by the embodiment of the present invention, during the color calibration process of the image forming device, calibration of the parameters of each component of the image forming device will be triggered according to different scenarios. This process will readjust the value of the optical power to meet the requirements of the final imaging effect. In the embodiment of the present invention, the adjustment value of the value of each component after the color calibration can be used as a basis to detect whether the device properties of the laser diode have changed or determine whether the device has aged.

[0078] In the technical solution provided by the embodiment of the present invention, anomaly detection based on optical power driving voltage can be performed by utilizing the laser device itself and the change of imaging parameters without adding additional detection devices. On the premise of being able to help realize abnormal detection of laser devices, it can save costs and meet the use needs of different users.

[0079] Figure 2 A flow chart of another method for detecting a laser device provided by an embodiment of the present invention is shown in FIG. Figure 2 As shown, the method includes:

[0080] Step 202: Every time the laser device stops working, a total light-emitting duration is generated, where the total light-emitting duration is the time calculated from when the laser device is first started to work.

[0081] In one embodiment of the present invention, the number of full-speed printing pages, half-speed printing pages, full-speed printing time of full-speed printing pages, and half-speed printing time of half-speed printing pages between the time when the laser device first starts working and the time when it stops working this time are obtained; the total light emission duration is generated based on the number of full-speed printing pages, half-speed printing pages, full-speed printing time of full-speed printing pages, and half-speed printing time of half-speed printing pages.

[0082] Specifically, the formula total lighting time = full-speed printing number of pages * full-speed printing time + half-speed printing number of pages * half-speed printing time is used to calculate the full-speed printing number of pages, half-speed printing number of pages, full-speed printing time of full-speed printing pages, and half-speed printing time of half-speed printing pages to generate the total lighting time.

[0083] Step 204 , determine whether the difference between the total luminous duration and the preset life time is greater than the set life threshold, if so, execute step 206 ; if not, execute step 208 .

[0084] In one embodiment of the present invention, if it is determined that the difference between the total light-emitting time and the preset life time is greater than the set life threshold, it indicates that the laser device may be abnormal, such as the laser diode may be aged, and step 206 is executed; if it is determined that the difference between the total light-emitting time and the preset life time is less than or equal to the set life threshold, it indicates that the laser device is normal, and step 208 is executed.

[0085] In one embodiment of the present invention, the life threshold can be set according to actual conditions.

[0086] For example, if the life threshold is set to 2 years, if the total light-emitting time is 9 years and the preset life time is 10 years, then the difference between the total light-emitting time and the preset life time is -1 year, and -1 year is less than 2 years, then the laser device is normal. For another example, if the life threshold is set to 1 year, if the total light-emitting time is 12 years and the preset life time is 10 years, then the difference between the total light-emitting time and the preset life time is 2 years, and 2 years is greater than 1 year, then the laser device may be abnormal, the operating time of the laser device exceeds the allowed use time, and there may be equipment aging, performance degradation, reduced safety, etc.

[0087] Step 206 , indicating that the laser device may be abnormal, and the process ends.

[0088] In one embodiment of the present invention, if the difference between the total light emission time and the preset life time is greater than the set life threshold, the laser device may be abnormal, and the laser diode may be aged.

[0089] Step 208: Indicate that the laser device is normal.

[0090] Figure 3 A flow chart of another method for detecting a laser device provided by an embodiment of the present invention is shown in FIG. Figure 3 As shown, the method includes:

[0091] Step 302, compare the actual surface potential of the photosensitive drum assembly applied with the optical power driving voltage with the reference surface potential corresponding to the optical power driving voltage to determine whether the actual surface potential reaches the reference potential. If so, execute step 306; if not, execute step 304.

[0092] In one embodiment of the present invention, the photosensitive drum assembly may include an organic photoconductor (OPC for short).

[0093] In one embodiment of the present invention, the optical power driving voltage can be adjusted in steps to obtain the actual surface potential of the photosensitive drum assembly corresponding to each optical power driving voltage, wherein the actual surface potential includes the OPC surface potential.

[0094] In one embodiment of the present invention, the consumable chip on the image forming device can obtain the current life of the photosensitive drum assembly. The larger the value of the life of the photosensitive drum assembly, the newer the photosensitive drum assembly is. The value of the life of the photosensitive drum assembly is 100%, which means that the photosensitive drum assembly is brand new. The life of the photosensitive drum assembly can be detected under the premise of ensuring that the OPC state is relatively good. 。

[0095] Step 304: Indicate that the laser device is abnormal, and the process ends.

[0096] Step 306: Indicate that the laser device is normal.

[0097] In the technical solution provided by the embodiment of the present invention, during color calibration, it is determined whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and a preset voltage value; or, from the time when the laser device starts to work to the time when it cannot work, it is determined whether the laser device is abnormal based on the total light emission time of the laser device; or, when the remaining life of the photosensitive drum assembly is greater than the preset life value, it is determined whether the laser device is abnormal based on a second comparison result between the actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage. In different working processes of the image forming device, it is determined whether the laser device is abnormal based on the optical power driving voltage, the total light emission time of the laser device, or the actual surface potential of the photosensitive drum assembly, thereby improving the accuracy of abnormality detection of the laser device.

[0098] In the technical solution provided by the embodiment of the present invention, the abnormality of the laser device can be accurately detected, and the high maintenance cost incurred due to the problems of the components of the laser device itself can be reduced.

[0099] In the technical solution provided by the embodiment of the present invention, based on the judgment of the jump range of the working time of the laser device, the optical power driving voltage of color correction, etc. during the working process of the image forming equipment, the performance monitoring of the laser diode component of the LSU during its life cycle can be achieved from the side by tracking the periodic changes of the optical power driving voltage of the laser device according to the working characteristics of the laser device (the influence of low-range temperature jumps on the optical power output should meet the constraints within a certain range).

[0100] An embodiment of the present invention provides a detection device for a laser device, the device comprising: a first judgment module 11 , a second judgment module 12 or a third judgment module 13 .

[0101] The first judgment module 11 is used to judge whether the laser device is abnormal based on a first comparison result between the value of the light power driving voltage and the preset voltage value during color calibration; or, the second judgment module 12 is used to judge whether the laser device is abnormal based on a second comparison result between the actual surface potential applied to the photosensitive drum assembly by the light power driving voltage and the reference surface potential corresponding to the light power driving voltage when the remaining life of the photosensitive drum assembly is greater than the preset life value; or, the third judgment module 13 is used to judge whether the laser device is abnormal based on a third comparison result between the total light emission time of the laser device and the preset life time each time the laser device stops working.

[0102] Figure 4 A schematic diagram of the structure of a first judgment module provided by an embodiment of the present invention is shown in FIG. Figure 4 As shown, the first judgment module 11 includes: a first acquisition submodule 111 , a first judgment submodule 112 , a first indication submodule 113 , a second acquisition submodule 114 and a second judgment submodule 115 .

[0103] The first acquisition submodule 111 is used to acquire the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage.

[0104] The first judgment submodule 112 is used to judge whether the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage and the second temperature corresponding to the last optical power driving voltage meet the first condition, and the first condition is whether the difference between the current optical power driving voltage and the last optical power driving voltage is greater than the first set voltage, and whether the difference between the first temperature and the second temperature is less than the set temperature difference.

[0105] The first judgment submodule 112 is used to trigger the first indication submodule 113 to indicate that the laser device is abnormal if it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage meet the first condition.

[0106] The first judgment submodule 112 is used to trigger the second acquisition submodule 114 to obtain the absolute value of the change in imaging parameters and the fluctuation value of the light power driving voltage for a preset number of times if it is determined that the current light power driving voltage, the first temperature corresponding to the current light power driving voltage, the previous light power driving voltage, and the second temperature corresponding to the previous light power driving voltage do not meet the first condition.

[0107] The second judgment submodule 115 is used to judge whether the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet the second condition, and the second condition is that the absolute value of the change in the imaging parameter is greater than the preset absolute value, and the fluctuation value of the optical power driving voltage for a preset number of times is greater than the second set voltage.

[0108] The second judging submodule 115 is used to trigger the first indicating submodule 113 to indicate that the laser device is abnormal if it is judged that the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet the second condition.

[0109] In one embodiment of the present invention, the imaging parameters include a developing voltage, a charging voltage or a transfer voltage.

[0110] Figure 5 A schematic diagram of the structure of a second judgment module provided by an embodiment of the present invention is shown in FIG. Figure 5 As shown, the second judgment module 12 includes: a fourth judgment submodule 121 and a third indication submodule 122 .

[0111] The fourth determination submodule 121 is used to compare the actual surface potential of the photosensitive drum assembly when the optical power driving voltage is applied to the photosensitive drum assembly with the reference surface potential corresponding to the optical power driving voltage, and determine whether the actual surface potential reaches the reference potential.

[0112] The fourth determination submodule 121 is used to trigger the third indication submodule 122 to indicate that the laser device is abnormal if the condition is not met.

[0113] Figure 6 A schematic diagram of the structure of a second judgment module provided by an embodiment of the present invention is shown in FIG. Figure 6 As shown, the third judgment module 13 includes: a generation submodule 131 , a third judgment submodule 132 and a second indication submodule 133 .

[0114] The generation submodule 131 is used to generate a total light-emitting duration each time the laser device stops working, and the total light-emitting duration is the time calculated from the time when the laser device is first started to work.

[0115] The third judgment submodule 132 is used to judge whether the difference between the total light-emitting time and the preset life time is greater than a set life threshold.

[0116] If the third judging submodule 132 judges that the difference between the total light emission time and the preset life time is greater than the set life threshold, the second indicating submodule 133 is triggered to indicate that the laser device may be abnormal.

[0117] In one embodiment of the present invention, the generation submodule 131 is specifically used to obtain the number of full-speed printing pages, half-speed printing pages, full-speed printing time of full-speed printing pages, and half-speed printing time of half-speed printing pages between the time when the laser device first starts working and the time when it stops working this time; and generate the total light emission time according to the full-speed printing pages, half-speed printing pages, full-speed printing time of full-speed printing pages, and half-speed printing time of half-speed printing pages.

[0118] In the technical solution provided by the embodiment of the present invention, during color calibration, it is determined whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and a preset voltage value; or, from the time when the laser device starts to work to the time when it cannot work, it is determined whether the laser device is abnormal based on the total light emission time of the laser device; or, when the remaining life of the photosensitive drum assembly is greater than the preset life value, it is determined whether the laser device is abnormal based on a second comparison result between the actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage. In different working processes of the image forming device, it is determined whether the laser device is abnormal based on the optical power driving voltage, the total light emission time of the laser device, or the actual surface potential of the photosensitive drum assembly, thereby improving the accuracy of abnormality detection of the laser device.

[0119] The detection device of the laser device provided in this embodiment can be used to achieve the above Figure 1 , Figure 2 or Figure 3 The detection method of the laser device in the embodiment of the detection method of the laser device can be described in detail, and will not be repeated here.

[0120] An embodiment of the present invention provides a computer-readable storage medium, which includes a stored program, wherein when the program is running, the device where the computer-readable storage medium is located is controlled to execute the steps of the embodiment of the detection method of the above-mentioned laser device. For a specific description, please refer to the embodiment of the detection method of the above-mentioned laser device.

[0121] An embodiment of the present invention provides an image forming device, including a memory and a processor, the memory is used to store information including program instructions, the processor is used to control the execution of the program instructions, and when the program instructions are loaded and executed by the processor, the steps of the embodiment of the detection method of the above-mentioned laser device are implemented. For a specific description, please refer to the embodiment of the detection method of the above-mentioned laser device.

[0122] Figure 7 Schematic diagram of an image forming device provided by an embodiment of the present invention. Figure 7As shown, the image forming device 20 of this embodiment includes: a processor 21, a memory 22, and a computer program 23 stored in the memory 22 and executable on the processor 21. When the computer program 23 is executed by the processor 21, the detection method applied to the laser device in the embodiment is implemented. To avoid repetition, it is not described one by one here. Alternatively, when the computer program is executed by the processor 21, the functions of each model / unit in the detection device applied to the laser device in the embodiment are implemented. To avoid repetition, it is not described one by one here.

[0123] The image forming device 20 includes, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will appreciate that Figure 7 It is only an example of the image forming device 20 and does not constitute a limitation of the image forming device 20. It may include more or fewer components than shown in the figure, or a combination of certain components, or different components. For example, the image forming device may also include input and output devices, network access devices, buses, etc.

[0124] The processor 21 may be a central processing unit (CPU), or other general-purpose processors, digital signal processors (DSP), application-specific integrated circuits (ASIC), field-programmable gate arrays (FPGA), or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components, etc. A general-purpose processor may be a microprocessor or any conventional processor, etc.

[0125] The memory 22 may be an internal storage unit of the image forming device 20, such as a hard disk or memory of the image forming device 20. The memory 22 may also be an external storage device of the image forming device 20, such as a plug-in hard disk, a smart media card (SMC), a secure digital (SD) card, a flash card, etc. equipped on the image forming device 20. Further, the memory 22 may also include both an internal storage unit of the image forming device 20 and an external storage device. The memory 22 is used to store computer programs and other programs and data required by the image forming device. The memory 22 may also be used to temporarily store data that has been output or is to be output.

[0126] Those skilled in the art can clearly understand that, for the convenience and brevity of description, the specific working processes of the systems, devices and units described above can refer to the corresponding processes in the aforementioned method embodiments and will not be repeated here.

[0127] In the several embodiments provided by the present invention, it should be understood that the disclosed systems, devices and methods can be implemented in other ways. For example, the device embodiments described above are only schematic. For example, the division of the units is only a logical function division. There may be other division methods in actual implementation. For example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the mutual coupling or direct coupling or communication connection shown or discussed can be an indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0128] The units described as separate components may or may not be physically separated, and the components shown as units may or may not be physical units, that is, they may be located in one place or distributed on multiple network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.

[0129] In addition, each functional unit in each embodiment of the present invention may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit. The above-mentioned integrated unit may be implemented in the form of hardware or in the form of hardware plus software functional units.

[0130] The above-mentioned integrated unit implemented in the form of a software functional unit can be stored in a computer-readable storage medium. The above-mentioned software functional unit is stored in a computer-readable storage medium, including a number of instructions for a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor (Processor) to perform some steps of the method described in each embodiment of the present invention. The aforementioned computer-readable storage medium includes: U disk, mobile hard disk, read-only memory (Read-Only Memory, ROM), random access memory (Random Access Memory, RAM), disk or optical disk and other media that can store program codes.

[0131] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A method for detecting a laser device, characterized in that: include: During color calibration, judging whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and the preset voltage value; or, When the remaining life of the photosensitive drum assembly is greater than a preset life value, the laser device is judged to be abnormal based on a second comparison result between an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage.

2. The method according to claim 1, characterized in that Also includes: Each time the laser device stops working, it is determined whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and the preset life time.

3. The method according to claim 2, characterized in that Each time the laser device stops working, judging whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and the preset life time includes: Each time the laser device stops working, the total light-emitting duration is generated, and the total light-emitting duration is the time calculated from the time when the laser device is first started to work; Determine whether the difference between the total luminous duration and the preset life time is greater than a set life threshold; If it is determined that the difference between the total light emission time and the preset life time is greater than a set life threshold, it indicates that the laser device may be abnormal.

4. The method according to claim 3, characterized in that Each time the laser device stops working, the total light emission duration is generated, including: Obtain the number of full-speed printed pages, the number of half-speed printed pages, the full-speed printing time of the full-speed printed pages, and the half-speed printing time of the half-speed printed pages between the time when the laser device first starts working and the time when it stops working this time; The total lighting duration is generated according to the full-speed printing number of pages, the half-speed printing number of pages, the full-speed printing time of the full-speed printing number of pages, and the half-speed printing time of the half-speed printing number of pages.

5. The method according to claim 1, characterized in that Based on a first comparison result between the value of the optical power driving voltage and the preset voltage value, judging whether the laser device is abnormal includes: Obtaining a current optical power driving voltage, a first temperature corresponding to the current optical power driving voltage, a previous optical power driving voltage, and a second temperature corresponding to the previous optical power driving voltage; Determine whether the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage meet a first condition, wherein the first condition is whether the difference between the current optical power driving voltage and the last optical power driving voltage is greater than a first set voltage, and whether the difference between the first temperature and the second temperature is less than a set temperature difference; If it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the last optical power driving voltage, and the second temperature corresponding to the last optical power driving voltage meet the first condition, it indicates that the laser device is abnormal.

6. The method according to claim 5, characterized in that Also includes: If it is determined that the current optical power driving voltage, the first temperature corresponding to the current optical power driving voltage, the previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage do not meet the first condition, then obtaining the absolute value of the change of the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times; Determine whether the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet a second condition, wherein the second condition is that the absolute value of the change in the imaging parameter is greater than a preset absolute value, and the fluctuation value of the optical power driving voltage for a preset number of times is greater than a second set voltage; If it is determined that the absolute value of the change in the imaging parameter and the fluctuation value of the optical power driving voltage for a preset number of times meet the second condition, it indicates that the laser device is abnormal.

7. The method according to claim 6, characterized in that The imaging parameters include developing voltage, charging voltage or transferring voltage.

8. The method according to claim 1, characterized in that Judging whether the laser device is abnormal according to a second comparison result between an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage, comprises: Comparing the actual surface potential of the photosensitive drum assembly when the optical power driving voltage is applied to the photosensitive drum assembly with the reference surface potential corresponding to the optical power driving voltage, and determining whether the actual surface potential reaches the reference potential; If it is not reached, it indicates that the laser device is abnormal.

9. A detection device for a laser device, characterized in that: include: A first judgment module, used for judging whether the laser device is abnormal based on a first comparison result between the value of the optical power driving voltage and a preset voltage value during color calibration; or, The second judgment module is used to judge whether the laser device is abnormal based on a second comparison result of an actual surface potential applied to the photosensitive drum assembly by the optical power driving voltage and a reference surface potential corresponding to the optical power driving voltage when the remaining life of the photosensitive drum assembly is greater than a preset life value.

10. The device according to claim 9, characterized in that Also includes: The third judgment module is used to judge whether the laser device is abnormal according to a third comparison result between the total light emission time of the laser device and the preset life time each time the laser device stops working.

11. An image forming device, comprising a memory and a processor, wherein the memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions, characterized in that: When the program instructions are loaded and executed by the processor, the steps of the detection method of the laser device according to any one of claims 1 to 8 are implemented.

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