A method of detecting a laser device, a device, and an image forming apparatus

Abstract

Embodiments of the present application provide a kind of detection method, device and image forming equipment of laser device.The method comprises: when color calibration, based on the first comparison result of the numerical value of light power driving voltage and preset voltage value, it is judged whether laser device is abnormal;Or, when the residual life of photosensitive drum assembly is greater than preset life value, according to the second comparison result of the actual surface potential of light power driving voltage applied to photosensitive drum assembly and the reference surface potential corresponding to light power driving voltage, it is judged whether laser device is abnormal.In different working processes of image forming equipment, the actual surface potential of light power driving voltage or photosensitive drum assembly is judged to determine whether laser device is abnormal, which improves the accuracy of abnormal detection of laser device.

Description

Technical Field

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

[0002] Laser devices include a Laser Scanner Unit (LSU), a precision component in image forming equipment. However, there is a lack of methods for detecting malfunctions in laser devices, or the methods used are not sophisticated enough. Once a malfunction occurs, users often cannot be notified in a timely manner, leading to inconvenience. Even though existing technologies offer methods for detecting malfunctions in laser devices, some require additional detection components, increasing hardware costs. Summary of the Invention

[0003] In view of this, embodiments of the present invention provide a method, apparatus, and image forming device for detecting anomalies in laser devices, thereby improving the accuracy of anomaly detection.

[0004] On one hand, embodiments of the present invention provide a method for detecting a laser device, comprising:

[0005] During color calibration, based on a first comparison between the optical power driving voltage value and a preset voltage value, it is determined whether the laser device is malfunctioning; or,

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

[0007] Optionally, it also includes:

[0008] Each time the laser device stops working, a third comparison result between the total emission time of the laser device and the preset lifespan is used to determine whether the laser device is malfunctioning.

[0009] Optionally, each time the laser device stops working, a third comparison result between the total emission time of the laser device and the preset lifespan is used to determine whether the laser device is malfunctioning, including:

[0010] Each time the laser device stops working, the total emission duration is generated, which is the time calculated from the time the laser device is first started working.

[0011] Determine whether the difference between the total light emission duration and the preset lifetime time is greater than a set lifetime threshold.

[0012] If the difference between the total emission duration and the preset lifetime is determined to be greater than the set lifetime threshold, it indicates that the laser device may be malfunctioning.

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

[0014] The number of pages printed at full speed, the number of pages printed at half speed, the full-speed printing time of the number of pages printed at full speed, and the half-speed printing time of the number of pages printed at half speed are obtained between the time when the laser device first starts working and the time when it stops working.

[0015] The total light emission duration is generated based on the number of pages printed at full speed, the number of pages printed at half speed, the full-speed printing time of the number of pages printed at full speed, and the half-speed printing time of the number of pages printed at half speed.

[0016] Optionally, based on a first comparison between the optical power driving voltage and a preset voltage value, it is determined whether the laser device is malfunctioning, including:

[0017] Obtain the current optical power drive voltage, the first temperature corresponding to the current optical power drive voltage, the previous optical power drive voltage, and the second temperature corresponding to the previous optical power drive voltage;

[0018] Determine whether 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. The first condition is whether the difference between the current optical power driving voltage and the previous 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 previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage meet the first condition, then the laser device is indicated to be malfunctioning.

[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 the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times are obtained.

[0022] Determine whether the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times satisfy the second condition. The second condition is that the absolute value of the change in imaging parameters 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.

[0023] If the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times are determined to meet the second condition, then the laser device is indicated to be malfunctioning.

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

[0025] Optionally, based on a second comparison result between the actual surface potential of the photosensitive drum assembly applied by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage, it is determined whether the laser device is malfunctioning, including:

[0026] The actual surface potential of the photosensitive drum assembly is applied with the optical power driving voltage, and compared with the reference surface potential corresponding to the optical power driving voltage to determine whether the actual surface potential reaches the reference surface potential.

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

[0028] On the other hand, embodiments of the present invention provide a detection device for a laser device, comprising:

[0029] The first judgment module is used to determine whether the laser device is malfunctioning during color calibration based on a first comparison between the value of the optical power driving voltage and a preset voltage value; or...

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

[0031] Optionally, it also includes:

[0032] The third judgment module is used to determine whether the laser device is abnormal each time it stops working, based on the third comparison result between the total emission time of the laser device and the preset lifespan.

[0033] On the other hand, embodiments of the present invention provide an image forming apparatus, including a memory and a processor. The memory is used to store information including program instructions, and the processor is used to control the execution of the program instructions. When the program instructions are loaded and executed by the processor, the steps of the detection method of the laser device described above are implemented.

[0034] In the technical solution of the laser device detection method provided in this invention, during color calibration, the laser device is judged to be abnormal based on a first comparison result between the value of the optical power driving voltage and a preset voltage value; or, when the remaining lifespan of the photosensitive drum assembly is greater than the preset lifespan value, the laser device is judged to be abnormal based on a second comparison result between the actual surface potential of the optical power driving voltage applied to the photosensitive drum assembly and the reference surface potential corresponding to the optical power driving voltage. By judging whether the laser device is abnormal based on the optical power driving voltage or the actual surface potential of the photosensitive drum assembly during different operating processes of the image forming equipment, the accuracy of laser device anomaly detection is improved. While helping users to detect laser device anomalies in a timely manner, it eliminates the need for the deployment of detection devices. Anomaly detection can be performed using the laser device itself and the changes in its operating parameters under different operating conditions, thereby achieving cost savings and meeting various detection needs while facilitating laser device anomaly detection. Attached Figure Description

[0035] To more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0036] Figure 1 A flowchart illustrating a detection method for a laser device according to an embodiment of the present invention;

[0037] Figure 2 A flowchart illustrating another detection method for a laser device provided in an embodiment of the present invention;

[0038] Figure 3 A flowchart illustrating another detection method for a laser device provided in an embodiment of the present invention;

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

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

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

[0042] Figure 7 This is a schematic diagram of an image forming apparatus provided in an embodiment of the present invention. Detailed Implementation

[0043] To better understand the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0044] It should be understood that the described embodiments are merely some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0045] The terminology used in the embodiments of this invention is for the purpose of describing particular embodiments only and is not intended to limit the invention. The singular forms “a,” “the,” and “the” as used in the embodiments of this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise.

[0046] It should be understood that the term "and / or" used in this article is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A existing alone, A and B existing simultaneously, or B existing alone. Additionally, the character " / " in this article generally indicates that the preceding and following related objects have an "or" relationship.

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

[0048] During color calibration, a first comparison between the optical power driving voltage value and a preset voltage value is used to determine whether the laser device is malfunctioning; or,

[0049] Based on the second comparison result between the actual surface potential of the photosensitive drum assembly applied by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage, it is determined whether the laser device is abnormal.

[0050] In particular, during color calibration, the laser device can be judged to be abnormal based on 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.

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

[0052] In the technical solution provided by the embodiments of the present invention, the laser device is judged to be abnormal by the optical power driving voltage or the actual surface potential of the photosensitive drum assembly during different working processes of the image forming device, thereby improving the accuracy of abnormal detection of the laser device.

[0053] The technical solution provided in this invention helps users promptly detect malfunctions in laser devices while eliminating the need for additional detection equipment. It utilizes the laser device itself and changes in its operating parameters under different conditions to perform malfunction detection. Therefore, while facilitating malfunction detection of laser devices, it also saves costs and meets various detection requirements.

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

[0055] Each time the laser device stops working, a third comparison between the total emission time of the laser device and the preset lifespan is used to determine whether the laser device is malfunctioning.

[0056] Specifically, from the start of LSU operation to the end of operation, the total emission time of the laser diode is counted. If the difference between the total emission time and the preset lifespan is greater than the set lifespan threshold, it is determined that the laser device may be malfunctioning.

[0057] In the technical solution provided by the embodiments of the present invention, if it is determined that the laser device may be malfunctioning, although the image forming equipment may still be usable, the laser diode may be aging. This can prompt the user to check the aging of the laser diode of the laser device, so that the user can know in advance of the possible malfunction of the laser device before the image forming equipment can be used normally, so that the user can repair it in time and the image forming equipment can always be in normal condition, so that the user can use the image forming equipment at any time.

[0058] The detection method of the above-mentioned laser device is described below with three specific embodiments. Figure 1 A flowchart of a detection method for a laser device provided in an embodiment of the present invention is shown below. Figure 1 As shown, the method includes:

[0059] Step 102: During color calibration, obtain 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.

[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, printers, copiers, fax machines, scanners, and multifunction printers that integrate printing, copying, faxing, and scanning functions into one unit, the function of which is to print images or text on an imaging medium.

[0061] In one embodiment of the present invention, the previous optical power driving voltage is the optical power driving voltage obtained during the previous color calibration. The second temperature corresponding to the previous optical power driving voltage is the second temperature corresponding to the optical power driving voltage obtained during the previous 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 previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage meet the first condition. The first condition is whether the difference between the current optical power driving voltage and the previous 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 yes, proceed to step 106; if no, proceed to 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 previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage meet the first condition, it indicates that the laser device is abnormal. The abnormality of the laser device may include the aging of the laser device components or the change in the properties of the laser device components, 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 previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage do not meet the first condition, it indicates that the laser device components are normal or the aging of the laser device components is not obvious. In order to detect that the abnormality of the laser device components has affected the printing effect, the laser device is further judged according to the imaging parameters to determine whether the laser device is abnormal, 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 a first set voltage, but the difference between the first temperature and the second temperature is greater than a set temperature difference, it indicates that the characteristics of the laser diode (LD) in the laser device may be temporarily altered due to temperature influence, 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 temperature abrupt change in the laser device, and the imaging parameters measured during the temperature abrupt change are not meaningful.

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

[0066] Step 106: Indicate that the laser device is malfunctioning, and the process ends.

[0067] Step 108: Obtain the absolute value of the changes in imaging parameters 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 a 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 the actual situation. 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 imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times satisfy the second condition. The second condition is that the absolute value of the change in imaging parameters 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 yes, proceed to step 106; if no, proceed to step 112.

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

[0072] In one embodiment of the present invention, each imaging parameter is 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 a preset absolute value.

[0073] In one embodiment of the present invention, the imaging parameters and the relevant parameters of the LD are coupled. Imaging overshoot cannot detect any abnormality in the laser device; it is necessary to combine this with LD calibration for judgment. Therefore, when the absolute value of the change in the imaging parameters is greater than a preset absolute value, or when the fluctuation value of the optical power driving voltage for a preset number of cycles is greater than a second set voltage, the laser device is not judged as abnormal.

[0074] In one embodiment of the present invention, the calibration of imaging parameters usually precedes the calibration of the LD. During the calibration of imaging parameters, the LD can maintain a certain set value. The calibration of imaging parameters is limited by a threshold, such as -450V to 450V. If, when the LD is abnormal, the output optical power can be set to 1700mV, but the actual optical power will attenuate to 850mV, then for the sake of overall image quality, the imaging parameters will be calibrated to the limit value of -450V. During the LD calibration stage, the imaging parameters can be maintained at -450V to adjust the optical power driving voltage. At this time, the optical power driving voltage will also exhibit a limit value due to attenuation, such as out-of-range adjustment.

[0075] There is a relative, but not absolute, relationship between the optical power driving voltage and the imaging parameters. For example, if the imaging parameter is -450V, and the optical power attenuation overshoot is 2450mV, it is still functional from an image quality perspective. In this case, the imaging parameter corresponding to the 2450mV optical power is -150V. If the difference between the imaging parameters of -450V and -150V is too large, the laser device is considered abnormal. Typically, the optical power driving voltage can be set within a range of 0-3300mV, which is much larger than the imaging parameter range. Therefore, the correspondence between the optical power driving voltage and the imaging parameters can be many-to-one, and the imaging parameters generally do not reach extreme values.

[0076] Step 112: Indicates that the laser device is functioning normally.

[0077] In the technical solution provided by this invention, during the color calibration process of the image forming device, the parameters of each component of the image forming device are calibrated according to different scenarios. This process readjusts the optical power value to meet the requirements of the final imaging effect. In this invention, the adjusted values ​​of each component after color calibration can be used as a basis to detect whether the device properties of the laser diode have changed or to determine whether the device is aging.

[0078] The technical solution provided in this invention enables anomaly detection based on optical power driving voltage by utilizing the laser device itself and changes in imaging parameters without the need for additional detection devices. This achieves cost savings and meets the diverse needs of different users while facilitating anomaly detection in laser devices.

[0079] Figure 2 A flowchart of another detection method for a laser device provided in an embodiment of the present invention is shown below. Figure 2 As shown, the method includes:

[0080] Step 202: Each time the laser device stops working, generate the total emission duration, which is the time calculated from the first start-up of the laser device.

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

[0082] Specifically, the formula is: Total illumination time = Number of pages printed at full speed. Full-speed print time + half-speed print pages The half-speed printing time is calculated by taking the full-speed printing time, the half-speed printing time, the full-speed printing time of the full-speed printing time, and the half-speed printing time of the half-speed printing time, and generating the total light emission time.

[0083] Step 204: Determine whether the difference between the total light emission duration and the preset lifespan is greater than the set lifespan threshold. If yes, proceed to step 206; otherwise, proceed to step 208.

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

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

[0086] For example, if the lifespan threshold is set to 2 years, and the total emission duration is 9 years with a preset lifespan of 10 years, then the difference between the total emission duration and the preset lifespan is -1 year. Since -1 year is less than 2 years, the laser device is functioning normally. However, if the lifespan threshold is set to 1 year, and the total emission duration is 12 years with a preset lifespan of 10 years, then the difference between the total emission duration and the preset lifespan is 2 years. Since 2 years is greater than 1 year, the laser device may be malfunctioning. The laser device's operating time has exceeded the allowable usage time, potentially leading to equipment aging, performance degradation, and reduced safety.

[0087] Step 206: Indicate that the laser device may be malfunctioning; process ends.

[0088] In one embodiment of the present invention, if the difference between the total light emission duration and the preset lifespan is greater than the set lifespan threshold, the laser device may be malfunctioning, and the laser diode may be aging.

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

[0090] Figure 3 A flowchart of another detection method for a laser device provided in an embodiment of the present invention is shown below. Figure 3 As shown, the method includes:

[0091] Step 302: Compare the actual surface potential of 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 surface potential. If yes, proceed to step 306; otherwise, proceed to step 304.

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

[0093] In one embodiment of the present invention, the optical power driving voltage can be adjusted in stages 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 lifespan of the photosensitive drum assembly. The larger the lifespan value of the photosensitive drum assembly, the newer the photosensitive drum assembly. A lifespan value of 100% indicates that the photosensitive drum assembly is brand new. The lifespan of the photosensitive drum assembly can be detected under the premise of ensuring that the OPC status is relatively good.

[0095] Step 304: Indicates a malfunction in the laser device; process ends.

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

[0097] In the technical solution provided by this invention, during color calibration, a first comparison between the value of the optical power driving voltage and a preset voltage value is used to determine whether the laser device is malfunctioning; alternatively, the total emission time of the laser device from the start of operation to its cessation of operation is used to determine whether the laser device is malfunctioning; or, when the remaining lifespan of the photosensitive drum assembly is greater than a preset lifespan value, a second comparison between the actual surface potential of the optical power driving voltage applied to the photosensitive drum assembly and the reference surface potential corresponding to the optical power driving voltage is used to determine whether the laser device is malfunctioning. By using the optical power driving voltage, the total emission time of the laser device, or the actual surface potential of the photosensitive drum assembly to determine whether the laser device is malfunctioning during different operating processes of the image forming equipment, the accuracy of laser device malfunction detection is improved.

[0098] The technical solution provided by the embodiments of the present invention can accurately detect abnormalities in laser devices, thereby reducing the high maintenance costs incurred due to problems with the components of the laser device itself.

[0099] In the technical solution provided by the embodiments of the present invention, based on the judgment of the jump range of the working time of the laser device and the optical power driving voltage of color correction during the operation of the image forming equipment, the performance monitoring of the laser diode component of the LSU during its life cycle can be achieved by tracking the periodic change 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 jump on 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 determine whether the laser device is abnormal during color calibration based on a first comparison result between the value of the optical power driving voltage and the preset voltage value; or, the second judgment module 12 is used to determine whether the laser device is abnormal when the remaining lifespan of the photosensitive drum assembly is greater than the preset lifespan value, based on a second comparison result between the actual surface potential of the photosensitive drum assembly applied by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage; or, the third judgment module 13 is used to determine whether the laser device is abnormal each time it stops working, based on a third comparison result between the total emission time of the laser device and the preset lifespan time.

[0102] Figure 4 This is a schematic diagram of the structure of a first judgment module provided in an embodiment of the present invention, as shown below. 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 previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage.

[0104] The first judgment submodule 112 is used to determine whether 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. The first condition is whether the difference between the current optical power driving voltage and the previous 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.

[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 acquire the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times 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.

[0107] The second judgment submodule 115 is used to determine whether the absolute value of the change in imaging parameters 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 imaging parameters 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 judgment submodule 115 is used to trigger the first indication submodule 113 to indicate an abnormality in the laser device if the absolute value of the change in the imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times are determined to meet the second condition.

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

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

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

[0112] The fourth judgment 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 This is a schematic diagram of the structure of a second judgment module provided in an embodiment of the present invention, as shown below. 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 the total emission duration each time the laser device stops working. The total emission duration is the time calculated from the time when the laser device is first started working.

[0115] The third judgment submodule 132 is used to determine whether the difference between the total light emission duration and the preset lifespan time is greater than the set lifespan threshold.

[0116] If the third judgment submodule 132 determines that the difference between the total emission duration and the preset lifespan is greater than the set lifespan threshold, it will trigger the second indication submodule 133 to indicate that the laser device may be malfunctioning.

[0117] In one embodiment of the present invention, the generation submodule 131 is specifically used to 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; and to generate the total light emission duration based on the number of full-speed printed pages, the 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.

[0118] In the technical solution provided by this invention, during color calibration, a first comparison between the value of the optical power driving voltage and a preset voltage value is used to determine whether the laser device is malfunctioning; alternatively, the total emission time of the laser device from the start of operation to its cessation of operation is used to determine whether the laser device is malfunctioning; or, when the remaining lifespan of the photosensitive drum assembly is greater than a preset lifespan value, a second comparison between the actual surface potential of the optical power driving voltage applied to the photosensitive drum assembly and the reference surface potential corresponding to the optical power driving voltage is used to determine whether the laser device is malfunctioning. By using the optical power driving voltage, the total emission time of the laser device, or the actual surface potential of the photosensitive drum assembly to determine whether the laser device is malfunctioning during different operating processes of the image forming equipment, the accuracy of laser device malfunction detection is improved.

[0119] The detection device for the laser device provided in this embodiment can be used to achieve the above. Figure 1 , Figure 2 or Figure 3 For a detailed description of the detection method for the laser device, please refer to the embodiments of the above-mentioned detection method for the laser device, which will not be repeated here.

[0120] This invention provides a computer-readable storage medium including a stored program, wherein, when the program runs, it controls the device containing the computer-readable storage medium to execute the steps of the embodiments of the detection method of the laser device described above. For a detailed description, please refer to the embodiments of the detection method of the laser device described above.

[0121] This invention provides an image forming apparatus, including a memory and a processor. The memory stores information including program instructions, and the processor controls the execution of the program instructions. When the program instructions are loaded and executed by the processor, they implement the steps of the above-described laser device detection method. For a detailed description, please refer to the above-described laser device detection method.

[0122] Figure 7 This is a schematic diagram of an image forming apparatus provided in an embodiment of the present invention. Figure 7As shown, the image forming apparatus 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, it implements the detection method applied to the laser device in this embodiment. To avoid repetition, it will not be described in detail here. Alternatively, when the computer program is executed by the processor 21, it implements the functions of each model / unit in the detection device applied to the laser device in this embodiment. To avoid repetition, it will not be described in detail here.

[0123] The image forming apparatus 20 includes, but is not limited to, a processor 21 and a memory 22. Those skilled in the art will understand that... Figure 7 This is merely an example of the image forming apparatus 20 and does not constitute a limitation on the image forming apparatus 20. It may include more or fewer components than illustrated, or combine certain components, or different components. For example, the image forming apparatus may also include input / 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 (DSPs), application-specific integrated circuits (ASICs), field-programmable gate arrays (FPGAs), 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.

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

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

[0127] In the embodiments provided by this invention, it should be understood that the disclosed systems, apparatuses, and methods can be implemented in other ways. For example, the apparatus embodiments described above are merely illustrative; for instance, the division of units is only a logical functional division, and in actual implementation, there may be other division methods. For example, multiple units or components may be combined or integrated into another system, or some features may be ignored or not executed. Furthermore, the coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection between devices or units through some interfaces, and may be electrical, mechanical, or other forms.

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

[0129] Furthermore, the functional units in the various embodiments of the present invention can be integrated into one processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The integrated unit can be implemented in hardware or in the form of hardware plus software functional units.

[0130] The integrated units implemented as software functional units described above can be stored in a computer-readable storage medium. These software functional units, stored in a computer-readable storage medium, include several instructions to cause a computer device (which may be a personal computer, server, or network device, etc.) or processor to execute some steps of the methods described in the various embodiments of the present invention. The aforementioned computer-readable storage medium includes various media capable of storing program code, such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks.

[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 within the scope of protection of the present invention.

Claims

1. A method for detecting a laser device, characterized in that, include: During color calibration, the laser device is judged to be abnormal based on the first comparison result between the value of the optical power driving voltage and the preset voltage value. or, When the remaining lifespan of the photosensitive drum assembly is greater than the preset lifespan value, the laser device is judged to be abnormal based on the second comparison result between the actual surface potential of the photosensitive drum assembly applied by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage. Based on a first comparison between the optical power driving voltage value and a preset voltage value, it is determined whether the laser device is malfunctioning, including: Obtain the current optical power drive voltage, the first temperature corresponding to the current optical power drive voltage, the previous optical power drive voltage, and the second temperature corresponding to the previous optical power drive voltage; Determine whether 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. The first condition is whether the difference between the current optical power driving voltage and the previous 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 previous optical power driving voltage, and the second temperature corresponding to the previous optical power driving voltage meet the first condition, then the laser device is indicated to be malfunctioning.

2. The method according to claim 1, characterized in that, Also includes: Each time the laser device stops working, a third comparison result between the total emission time of the laser device and the preset lifespan is used to determine whether the laser device is malfunctioning.

3. The method according to claim 2, characterized in that, Each time the laser device stops working, a third comparison result between the total emission time of the laser device and the preset lifespan is used to determine whether the laser device is malfunctioning, including: Each time the laser device stops working, the total emission duration is generated, which is the time calculated from the time the laser device is first started working. Determine whether the difference between the total light emission duration and the preset lifetime time is greater than a set lifetime threshold. If the difference between the total emission duration and the preset lifetime is determined to be greater than the set lifetime threshold, it indicates that the laser device may be malfunctioning.

4. The method according to claim 3, characterized in that, The total emission duration is generated each time the laser device stops working, including: The number of pages printed at full speed, the number of pages printed at half speed, the full-speed printing time of the number of pages printed at full speed, and the half-speed printing time of the number of pages printed at half speed are obtained between the time when the laser device first starts working and the time when it stops working. The total light emission duration is generated based on the number of pages printed at full speed, the number of pages printed at half speed, the full-speed printing time of the number of pages printed at full speed, and the half-speed printing time of the number of pages printed at half speed.

5. The method according to claim 1, 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 the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times are obtained. Determine whether the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times satisfy the second condition. The second condition is that the absolute value of the change in imaging parameters 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 the absolute value of the change in imaging parameters and the fluctuation value of the optical power driving voltage for a preset number of times are determined to meet the second condition, then the laser device is indicated to be malfunctioning.

6. The method according to claim 5, characterized in that, The imaging parameters include developing voltage, charging voltage, or transfer voltage.

7. The method according to claim 1, characterized in that, Based on a second comparison between the actual surface potential of the photosensitive drum assembly applied by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage, it is determined whether the laser device is malfunctioning, including: The actual surface potential of the photosensitive drum assembly is applied with the optical power driving voltage, and compared with the reference surface potential corresponding to the optical power driving voltage to determine whether the actual surface potential reaches the reference surface potential. If the target is not reached, it indicates that the laser device is malfunctioning.

8. A detection device for a laser device, characterized in that, include: The first judgment module is used to determine whether the laser device is abnormal during color calibration based on the first comparison result between the value of the optical power driving voltage and the preset voltage value. or, The second judgment module is used to determine whether the laser device is abnormal when the remaining lifespan of the photosensitive drum assembly is greater than the preset lifespan value, based on the second comparison result of the actual surface potential of the photosensitive drum assembly applied by the optical power driving voltage and the reference surface potential corresponding to the optical power driving voltage. The first judgment module includes: a first acquisition submodule, a first judgment submodule, and a first indication submodule; The first acquisition submodule is used to acquire 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; The first judgment submodule is used to determine whether 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. The first condition is whether the difference between the current optical power driving voltage and the previous 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. The first judgment submodule is used to trigger the first indication submodule 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.

9. The apparatus according to claim 8, characterized in that, Also includes: The third judgment module is used to determine whether the laser device is abnormal each time it stops working, based on the third comparison result between the total emission time of the laser device and the preset lifespan.

10. An image forming apparatus, comprising a memory and a processor, the memory for storing information including program instructions, the processor for controlling the execution of the program instructions, characterized in that, When the program instructions are loaded and executed by the processor, they implement the steps of the detection method for the laser device according to any one of claims 1 to 7.

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