A printing control method, apparatus, laser printing equipment, and storage medium.

Abstract

This application discloses a printing control method, apparatus, laser printing equipment, and storage medium, relating to the field of image printing technology. The method includes: when a paper to be printed is detected by a paper detection component, real-time monitoring of the current data of the laser printing equipment is performed after a first time interval; if the trend of the current data meets a preset current standard, it is determined that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing equipment; before the transfer roller performs the transfer operation on the paper to be printed, the transfer current of the transfer roller is adjusted to a target current value by adjusting the transfer voltage of the transfer roller; and the transfer roller is controlled to perform the transfer operation on the paper to be printed. The technical solution provided by this application can accurately and timely identify when the paper has reached the working area of ​​the transfer roller, ensuring the stability and reliability of the transfer process.

Description

Technical Field

[0001] This application relates to the field of image printing technology, and in particular to a printing control method, apparatus, laser printing equipment, and storage medium. Background Technology

[0002] In laser printers, the transfer current (applied to the transfer roller) is a key factor affecting print quality. Poor control can lead to ghosting and low transfer rates. If there is already text on the paper (i.e., toner is already present), adjusting the transfer current will be affected by the toner, resulting in a suboptimal transfer current. Therefore, the transfer current must be adjusted to the target value before transferring the text onto the paper.

[0003] Typically, the top and bottom margins of a paper sheet are 3 to 5 mm. Assuming a paper feed speed of 176 mm / s, there is only a maximum of 28 ms available to adjust the transfer current. In existing technologies, a paper detection component is placed upstream of the transfer roller. The time it takes for the leading edge of the paper to reach the transfer roller is calculated based on the distance between the paper detection component and the transfer roller, as well as the paper's travel speed. However, printer structures are prone to errors, and the paper may slip or even deviate in speed before entering the transfer roller. Therefore, the calculated time for the leading edge of the paper to reach the transfer roller may differ from the actual time. When adjusting the transfer current, the leading edge of the paper may have already reached the roller prematurely or may not have even reached it yet. Because existing methods cannot accurately and promptly identify whether the paper has reached the transfer roller, the transfer current may be adjusted too early or too late, thus affecting the transfer operation's effectiveness. Summary of the Invention

[0004] This application provides a printing control method, apparatus, laser printing equipment, and storage medium, which can more accurately and timely identify when paper arrives at the working area of ​​the transfer roller, thereby improving the stability and reliability of the transfer process.

[0005] In a first aspect, this application provides a printing control method applied to a laser printing device, wherein the laser printing device is equipped with a paper detection component, the method comprising:

[0006] When the paper to be printed is detected by the paper detection component, the current data of the laser printing device is detected in real time after a first duration.

[0007] If the trend of the current data meets the preset current standard, it is determined that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing equipment.

[0008] Before the transfer roller performs the transfer operation on the paper to be printed, the transfer current of the transfer roller is adjusted to the target current value by adjusting the transfer voltage of the transfer roller;

[0009] The transfer roller is controlled to perform a transfer operation on the paper to be printed.

[0010] Furthermore, the first duration is determined by the following methods: obtaining a first distance between the paper detection component and the transfer roller, and obtaining the running speed of the paper to be printed; taking a value that is a preset distance smaller than the first distance as the estimated distance at which the paper to be printed will reach the working area of ​​the transfer roller; and dividing the preset distance and the running speed to obtain the first duration.

[0011] Furthermore, if the trend of the current data meets the preset current standard, it is determined that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing device, including: recording the first detected current value; if a second current value that differs from the first current value by a preset difference is detected, it is determined that the paper to be printed has reached the working area of ​​the transfer roller.

[0012] Furthermore, before adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller, the method further includes: determining whether the trend of the current data is stable; if it is stable, then performing the operation of adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller.

[0013] Furthermore, adjusting the transfer current of the transfer roller to a target current value by adjusting the transfer voltage of the transfer roller includes: adjusting the transfer voltage to a target voltage value; determining the current transfer current of the transfer roller when the trend of the transfer voltage tends to stabilize; adjusting the transfer voltage based on the difference between the current transfer current and the target current value; and repeatedly performing the operation of determining the current transfer current of the transfer roller when the trend of the transfer voltage tends to stabilize until the current transfer current reaches the target current value.

[0014] Further, adjusting the transfer voltage to the target voltage value includes: determining a voltage adjustment range for the transfer voltage, the voltage adjustment range including a maximum voltage value and a target voltage value, the voltage adjustment range including a sub-voltage range corresponding to the target voltage value; applying the maximum voltage value to the transfer roller for a second duration, such that after the second duration, the transfer voltage is increased to the sub-voltage range; and applying the target voltage value to the transfer roller to stabilize the transfer voltage to the target voltage value.

[0015] Furthermore, the maximum voltage value is greater than the target voltage value, and the second duration is the time required, as measured by experiment, to apply voltage to the transfer roller using the maximum voltage value, thereby increasing the transfer voltage to the target voltage value.

[0016] Secondly, this application provides a printing control device for use in a laser printing device, wherein the laser printing device is equipped with a paper detection component, and the device includes:

[0017] The data acquisition module is used to detect the current data of the laser printing device in real time after a first time period when the paper to be printed is detected by the paper detection component.

[0018] The data judgment module is used to determine that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing equipment if the trend of the change of the current data meets the preset current standard.

[0019] The current adjustment module is used to adjust the transfer current of the transfer roller to a target current value by adjusting the transfer voltage of the transfer roller before the transfer roller performs the transfer operation on the paper to be printed.

[0020] The transfer execution module is used to control the transfer roller to perform a transfer operation on the paper to be printed.

[0021] Thirdly, this application provides a laser printing device, which includes: at least one processor; and a memory communicatively connected to the at least one processor; wherein the memory stores a computer program executable by the at least one processor, the computer program being executed by the at least one processor to enable the at least one processor to perform the printing control method described in any embodiment of this application.

[0022] Fourthly, this application provides a computer-readable storage medium storing computer instructions that, when executed by a processor, implement the printing control method described in any embodiment of this application.

[0023] Fifthly, this application provides a computer program product, including a computer program that, when executed by a processor, implements the printing control method described in any embodiment of this application.

[0024] To address the shortcomings of existing technologies, this application provides a printing control method. This method offers the following advantages: After the paper detection component detects the paper, it detects current data after a first time interval and determines whether the paper has reached the working area of ​​the transfer roller based on the trend of the current data. Compared to simple mechanical position detection, this method is more intelligent and accurate, avoiding detection errors caused by wear of mechanical parts or paper abnormalities (such as curling or wrinkling). It can accurately and promptly identify when the paper has reached the working area of ​​the transfer roller, improving the automation and reliability of the entire printing process. This ensures that subsequent transfer operations are initiated when the paper is accurately positioned, reducing paper jams and printing misalignment. Furthermore, after determining that the paper has reached the transfer roller area, this application adjusts the transfer voltage of the transfer roller to adjust the transfer current to the target current value and controls the transfer roller to perform the transfer operation. This voltage and current adjustment mechanism ensures that the transfer roller is in optimal working condition before the transfer operation, guaranteeing the stability and reliability of the transfer process and avoiding printing defects such as blurry images, uneven colors, or missing text caused by unstable transfer current.

[0025] It should be noted that the aforementioned computer instructions may be stored, in whole or in part, on a computer-readable storage medium. This computer-readable storage medium may be packaged together with the processor of the printing control device, or it may be packaged separately from the processor of the printing control device; this application does not impose any limitations on this.

[0026] The descriptions of the second, third, ... and fifth aspects in this application can be referred to the detailed description of the first aspect; and the beneficial effects of the descriptions of the second, third, ... and fifth aspects can be referred to the analysis of the beneficial effects of the first aspect, which will not be repeated here.

[0027] It should be understood that the description in this section is not intended to identify key or essential features of the embodiments of this application, nor is it intended to limit the scope of this application. Other features of this application will become readily apparent from the following description.

[0028] It is understood that before using the technical solutions disclosed in the various embodiments of this application, users should be informed of the types, scope of use, and usage scenarios of the personal information involved in this application in an appropriate manner in accordance with relevant laws and regulations, and user authorization should be obtained. Attached Figure Description

[0029] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0030] Figure 1 This is a first flowchart illustrating a printing control method provided in an embodiment of this application;

[0031] Figure 2 A simplified schematic diagram of the internal structure of the laser printing device provided in the embodiments of this application;

[0032] Figure 3 This is a second flowchart illustrating a printing control method provided in an embodiment of this application;

[0033] Figure 4 The voltage change curves of applying 10V and 5V to the transfer roller are provided in the embodiments of this application.

[0034] Figure 5 This is a schematic diagram of the structure of a printing control device provided in an embodiment of this application;

[0035] Figure 6 This is a block diagram of a laser printing device used to implement a printing control method according to an embodiment of this application. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. Based on the embodiments of this application, all other embodiments obtained by those skilled in the art without creative effort should fall within the scope of protection of this application.

[0037] It should be noted that the terms "first," "second," "target," and "original," etc., used in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in sequences other than those illustrated or described herein. Furthermore, the terms "comprising," "having," and any variations thereof are intended to cover a non-exclusive inclusion; for example, a process, method, system, product, or apparatus that comprises a series of steps or units is not necessarily limited to those steps or units explicitly listed, but may include other steps or units not explicitly listed or inherent to such processes, methods, products, or apparatus.

[0038] Before introducing the embodiments of this application, a brief overview of the working principle of laser printing equipment will be provided. The working principle of laser printing equipment combines laser scanning technology and electro-imaging technology, specifically including a data exchange stage, a laser scanning stage, and an electro-imaging and developing stage.

[0039] The data exchange stage involves the following steps: When a user sends a print command to the printer via the computer operating system, the printer driver first converts the text and image information to be printed into binary information, which is then transmitted to the main control board. The laser scanning stage involves the main control board receiving and interpreting the binary information from the driver, then focusing it onto the laser beam and controlling the laser section to emit light based on this information. Simultaneously, the photosensitive drum surface is charged by the charging device, and then the laser scanning section generates a laser beam carrying the text and image information to expose the photosensitive drum, forming an electrostatic latent image on the drum surface after exposure. The electrostatic imaging and development stage includes development, transfer, and fixing. Specifically, after the drum comes into contact with the developing system, the latent image becomes visible text and image. Passing through the transfer system, under the electric field of the transfer device, the toner is transferred to the paper. After transfer, the paper contacts the electrostatic discharge teeth to discharge the charge to ground. Finally, it enters the high-temperature fixing system, where the text and image formed by the toner are integrated into the paper. After printing the text and image information, the cleaning device removes any untransferred toner, and the next work cycle begins. This application is an improvement to the transfer printing process.

[0040] Figure 1 This is a first flowchart illustrating a printing control method provided in an embodiment of this application. This embodiment is applicable to scenarios where a laser printer performs a transfer operation on paper to be printed. The printing control method provided in this embodiment can be executed by the printing control device provided in this embodiment. This device can be implemented through software and / or hardware and integrated into the electronic device executing the method. Preferably, the electronic device in this embodiment can be a laser printing device.

[0041] See Figure 1 The method in this embodiment includes, but is not limited to, the following steps:

[0042] S110. When the paper to be printed is detected by the paper detection component, the current data of the laser printing device is detected in real time after a first duration.

[0043] The laser printing equipment includes a paper detection component, which can be a paper detection sensor used to detect the presence of paper in the laser printing equipment and determine whether the paper to be printed has moved to a preset position. In this step, the current data of the laser printing equipment can be the total current of the entire laser printing equipment, or the current on the drum or transfer roller. Preferably, the current data is the current on the transfer roller; it should be explained that this current data is a low current applied to the transfer roller before performing the transfer operation, used to release any static electricity that may accumulate on the surface of the drum and transfer roller, preventing the accumulation of static electricity and charge. Unlike the transfer current of the transfer roller in the subsequent step S130, the transfer current is used to perform the transfer operation.

[0044] In this embodiment, when the laser printer is operating in the electro-imaging and developing stage, a paper detection sensor detects the paper to be printed. When the paper detection component detects the paper, it determines that the leading edge of the paper has moved to the position corresponding to the paper detection sensor. The laser printing equipment also includes a toner cartridge and a transfer roller. Figure 2 The diagram shown is a simplified representation of the internal structure of a laser printing device. Figure 2 In the attached diagram, reference numeral S denotes the distance between the paper detection sensor and the transfer roller as the first distance. Existing methods typically calculate the theoretical time T for the paper to reach the transfer roller based on the distance between the paper detection sensor and the transfer roller (i.e., the first distance S) and the theoretical running speed V of the paper. When the paper detection sensor detects a delay of T after the leading edge of the paper, it is determined that the leading edge of the paper has reached the working area of ​​the transfer roller. However, due to the inherent errors in printer structure, the calculated theoretical time for the paper to reach the transfer roller may deviate from the actual time.

[0045] This embodiment detects current data in real time and determines whether the paper has reached the working area of ​​the transfer roller based on the trend of current data changes. The advantage of this setup is that it avoids the problem of inaccurate and timely identification of whether the paper has reached the working area of ​​the transfer roller due to potential speed errors or slippage before entering the working area. In principle, when the voltage of the device remains constant, the resistance changes, and the current changes accordingly. In this embodiment, when the paper to be printed reaches the working area of ​​the transfer roller, the voltage does not change, but the resistance changes, so the current changes. This current change can then be used to accurately identify whether the paper has reached the working area of ​​the transfer roller, thus solving the problem of inaccurate and timely identification of whether the paper has reached the working area of ​​the transfer roller due to errors in the printing equipment structure. Therefore, it is necessary to record the time point at which the paper detection component detects the paper to be printed. After a first time interval from this time point, the current data of the laser printing equipment is detected in real time so that the trend of current data changes can be used to determine whether the paper has moved to the working area of ​​the transfer roller.

[0046] In this application, after the paper detection component detects the paper, the printer does not immediately detect the current data. Instead, it waits until the leading edge of the paper reaches a predetermined position between the paper detection component and the transfer working area (e.g., ...). Figure 2The detection begins when the paper reaches position a (see attached diagram). There is a delay period, called the "first duration." This is because the current on the transfer roller remains relatively constant until the leading edge of the paper reaches the working area of ​​the transfer roller. If current detection started immediately after the paper detection component detected the paper, it would waste resources. On the other hand, due to printer structural errors, the leading edge of the paper may arrive at the transfer roller's working area prematurely, thus requiring current detection to begin before the theoretically reached area. The first duration can be a default value set by the printer's internal program or manually set by technical support personnel based on actual application conditions.

[0047] Preferably, the first duration is determined by: acquiring a first distance between the paper detection component and the transfer roller (i.e., ... Figure 2 (Referring to the attached diagram S), and obtain the theoretical running speed of the paper to be printed; a preset distance smaller than the first distance (i.e., ... Figure 2 The value of the attached diagram (D) is used as the estimated distance at which the paper to be printed will reach the working area of ​​the transfer roller (i.e., the estimated distance is equal to SD); the first duration is obtained by dividing the preset distance and the running speed.

[0048] S120. If the trend of the current data meets the preset current standard, then it is determined that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing equipment.

[0049] Specifically, if the trend of current data changes meets a preset current standard, it is determined that the paper to be printed has reached the working area of ​​the transfer roller of the laser printer. This includes: real-time detection of the current data of the laser printer through a current acquisition component, recording the first detected current value (denoted as the first current value), and storing it in a dedicated buffer register. As time progresses and the paper continues to be transferred, the detection system continuously samples the current at high frequency. If a second current value is detected that differs from the first current value by a preset difference (ideally, a second current value that differs from the first current value by a preset difference is detected for a certain period of time), it is determined that the paper to be printed has reached the working area of ​​the transfer roller.

[0050] The first current value represents a reference current parameter of the transfer roller in its current working state before the paper reaches the working area of ​​the transfer roller. The current working state is the working state in which the transfer roller is in a state to prevent static electricity and charge accumulation. For example, a low current is applied to the transfer roller before performing the transfer operation to release static electricity that may accumulate on the surface of the drum and the transfer roller, and to prevent static electricity and charge accumulation. The current distribution of the transfer roller is in a reference initial state.

[0051] The preset difference can be a precise value derived from extensive experimental testing and theoretical calculations. It comprehensively considers the impact of various physical changes on the current caused by the paper reaching the working area of ​​the transfer roller. For example, when the paper moves between the transfer roller and the drum, it causes a change in the impedance between the transfer roller and the drum, which in turn leads to a change in the current.

[0052] Ideally, to ensure the accuracy and stability of the detection and prevent misjudgments due to instantaneous noise or other interference factors in the current, the detection system can also be equipped with filtering and anti-interference algorithms. When determining whether the trend of the current data meets the preset current standard, the collected current data will first undergo digital filtering to remove interference components such as high-frequency noise and low-frequency fluctuations before numerical judgment is performed.

[0053] S130. Before the transfer roller performs the transfer operation on the paper to be printed, the transfer current of the transfer roller is adjusted to the target current value by adjusting the transfer voltage of the transfer roller.

[0054] In this embodiment of the application, when the paper to be printed reaches the working area of ​​the transfer roller of the laser printing device, the main control board of the laser printer will receive a signal from the paper position detection sensor. The signal indicates that the paper has reached the working area of ​​the transfer roller, and the transfer preparation program is triggered. That is, the transfer current of the transfer roller is adjusted to the target current value by adjusting the transfer voltage of the transfer roller.

[0055] The main control board retrieves pre-set transfer current and voltage parameter tables from its built-in memory chip. It then sends control commands to the voltage regulation circuit of the transfer roller, instructing it to drive the roller to the required operating voltage range. Simultaneously, the transfer roller's current feedback loop collects the actual current value in real time. The main control board continuously compares the collected actual current value with the target current value and uses a Proportional Integral Differential (PID) control algorithm to calculate the correction amount for the next voltage adjustment based on the difference. Throughout the adjustment process, the main control board repeats the voltage adjustment and current feedback steps at a very high frequency (e.g., several adjustments per millisecond) until the transfer current of the transfer roller stabilizes within the allowable error range of the target current value. Through this voltage and current regulation mechanism, the laser printer can ensure the transfer roller is in optimal working condition before the transfer operation, providing technical assurance for high-quality print output and avoiding printing defects such as blurry images, uneven colors, or missing text caused by unstable transfer current.

[0056] The parameter table can be generated through extensive experimental testing and data fitting of the printer under different paper types, print quality settings and environmental conditions. It provides the optimal combination of transfer voltage and current for each printing scenario to ensure clear and accurate image transfer results.

[0057] Furthermore, before adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller, the method further includes: calculating the average value of the current data over a time period (such as the past few milliseconds) using the sliding window averaging method, and comparing it with the average value of multiple previous time periods to determine whether the trend of the current data changes tends to be stable; if it tends to be stable, then the operation of adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller is performed, that is, the adjustment operation of the transfer current of the transfer roller is initiated.

[0058] S140: Control the transfer roller to perform a transfer operation on the paper to be printed.

[0059] In this embodiment, during the laser printing process, the main control board first sends a precise signal to the transfer roller drive circuit to start the motor and make it rotate at a constant speed. At the same time, the high-voltage power supply circuit is activated to provide a stable high-voltage electric field for the transfer roller, controlling the transfer roller to transfer toner onto the paper to be printed, thus completing the transfer operation on the paper to be printed.

[0060] The technical solution provided in this embodiment detects the paper to be printed by the paper detection component and then monitors the current data of the laser printing device in real time after a first time interval. If the trend of the current data meets the preset current standard, it is determined that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing device. Before the transfer roller performs the transfer operation on the paper to be printed, the transfer current of the transfer roller is adjusted to the target current value by adjusting the transfer voltage of the transfer roller. The transfer roller is then controlled to perform the transfer operation on the paper to be printed. This application detects the current data after the paper detection component detects the paper and then judges whether the paper has reached the working area of ​​the transfer roller based on the trend of the current data. Compared with simple mechanical position detection, this is more intelligent and accurate, and can avoid detection errors caused by wear of mechanical parts or paper abnormalities (such as curling or wrinkling). It can accurately and timely identify whether the paper has reached the working area of ​​the transfer roller, improve the automation and reliability of the entire printing process, and ensure that the subsequent transfer operation is started when the paper is accurately positioned, reducing problems such as paper jams and printing misalignment. Furthermore, after determining that the paper has reached the transfer roller area, this application adjusts the transfer voltage of the transfer roller to adjust the transfer current to the target current value and controls the transfer roller to perform the transfer operation. Through this voltage and current adjustment mechanism, the transfer roller can be ensured to be in the best working state before the transfer operation, ensuring the stability and reliability of the transfer process and avoiding printing defects such as blurry images, uneven colors, or missing text caused by unstable transfer current.

[0061] The printing control method provided in the embodiments of this application is further described below. Figure 3 This is a second flowchart illustrating a printing control method provided in an embodiment of this application. This embodiment optimizes the above embodiments, specifically by providing a detailed explanation of the process of adjusting the transfer current of the transfer roller to a target current value by adjusting the transfer voltage of the transfer roller.

[0062] See Figure 3 The method in this embodiment includes, but is not limited to, the following steps:

[0063] S210. Determine the voltage adjustment range of the transfer voltage.

[0064] The voltage regulation range includes a maximum voltage value and a target voltage value, with the maximum voltage value being greater than the target voltage value. The voltage regulation range also includes sub-voltage ranges corresponding to the target voltage value.

[0065] In this embodiment, the transfer current is adjusted after the leading edge of the paper to be printed reaches the working area of ​​the transfer roller. Before the transfer roller transfers the text portion of the page to be printed, the transfer current needs to be adjusted to the target current value. The distance between the leading edge of the paper to be printed and the text portion of the page (i.e., the top and bottom margins of the paper) is 3 to 5 mm. Assuming the paper feed speed is 176 mm / s, there is a maximum of only 28 ms for adjusting the transfer current; that is, the transfer current needs to be adjusted to the target current value within 28 ms.

[0066] However, in the entire system of a laser printer, the current and voltage are not linearly related. The transfer current is adjusted by regulating the transfer voltage. Therefore, to adjust the transfer current to the target value, the voltage adjustment range of the transfer voltage needs to be determined first. Furthermore, high voltage stabilization takes time, so the number of adjustments is limited, and multiple adjustments are required to approach the target current value. If too few adjustments are made, there will often be a gap between the target current value and the actual value.

[0067] In this embodiment, the time required to apply voltage to the transfer roller to the target voltage value can be shortened. This saves time for small-scale adjustments to the transfer voltage, allowing the transfer current to be adjusted to the target value, thus increasing the number of adjustments to the transfer current. For example, as... Figure 4 The figure shows the voltage change curves when 10V and 5V are applied to the transfer roller respectively. As can be seen from the figure, voltage adjustment can be roughly divided into a boost stage and a stabilization stage. The curves show that the voltage rises faster when the voltage is increased. Therefore, when the target voltage value is 5V, you can first adjust the voltage to 10V as the assumed target voltage, and then switch back to the target voltage value of 5V after a period of time (e.g., after 1ms). This shortens the time required to apply voltage to the transfer roller to the target voltage value.

[0068] The process of determining the voltage adjustment range can be as follows: The main control board retrieves a pre-set transfer current and transfer voltage parameter table from the built-in storage chip. Based on this parameter table, it finds the target voltage value corresponding to the target current value, and then uses a preset multiple (such as 2 times) of the target voltage value as the maximum voltage value. Considering the structural errors of each laser printer or the actual application scenario, a voltage value slightly smaller than the target voltage value is taken as the minimum voltage value, and the voltage range formed by the minimum and maximum voltage values ​​is taken as the voltage adjustment range.

[0069] S220. Apply voltage to the transfer roller at the maximum voltage value for a second duration, so that after the second duration, the transfer voltage is increased to the sub-voltage range.

[0070] The second duration is the time required, as measured by experiments, to apply voltage to the transfer roller at the maximum voltage value, thereby increasing the transfer voltage to the target voltage value.

[0071] In this embodiment, during the initial voltage regulation, the maximum voltage value within the voltage regulation range is applied to the transfer roller. This voltage can be precisely increased by adjusting the turns ratio of the internal step-up transformer or changing the operating frequency of the switching power supply. This process continues for a second duration to rapidly increase the transfer voltage of the transfer roller to approximately the target voltage value, i.e., the sub-voltage range corresponding to the target voltage value.

[0072] S230. Apply voltage to the transfer roller using the target voltage value to stabilize the transfer voltage to the target voltage value.

[0073] In this embodiment of the application, after the second duration, the voltage value applied to the transfer roller is modified to the target voltage value, and voltage is applied to the transfer roller to stabilize the transfer voltage to the target voltage value.

[0074] S240. When the trend of the transfer voltage changes to stabilize, determine the current transfer current of the transfer roller.

[0075] In this embodiment of the application, the average value of the transfer voltage over a time period (such as the past few milliseconds) can be calculated using the sliding window averaging method, and compared with the average value of multiple previous time periods to determine whether the trend of the transfer voltage is stabilizing; if it is stabilizing, the current transfer current of the transfer roller can be obtained through the current acquisition component.

[0076] S250: Adjust the transfer voltage based on the difference between the current transfer current and the target current value.

[0077] In this embodiment, the main control board continuously compares the current transfer current with the target current value, and uses a PID control algorithm to calculate the correction amount for the next voltage adjustment based on the difference between the two.

[0078] S260. Determine whether the current transfer current has reached the target current value. If the target current value has not been reached, repeat steps S240 to S250 until the current transfer current reaches the target current value.

[0079] S270. If the target current value is reached, the process ends.

[0080] The technical solution provided in this embodiment determines the voltage adjustment range of the transfer voltage; applies a maximum voltage value to the transfer roller for a second duration, so that the transfer voltage is increased to a sub-voltage range after the second duration; applies a target voltage value to the transfer roller to stabilize the transfer voltage to the target voltage value; determines the current transfer current of the transfer roller when the trend of the transfer voltage becomes stable; adjusts the transfer voltage based on the difference between the current transfer current and the target current value; and repeats the step of adjusting the transfer voltage until the current transfer current reaches the target current value. This application sets a voltage adjustment range for the transfer voltage after determining that the paper has reached the transfer roller area, and applies a maximum voltage value to the transfer roller; this allows the transfer voltage of the transfer roller to quickly increase to approximately the target voltage value, increasing the number of times the transfer current can be adjusted. Furthermore, by adjusting the transfer voltage of the transfer roller, the transfer current is adjusted to the target current value. Through this voltage and current adjustment mechanism, the transfer roller can be ensured to be in the best working condition before the transfer operation, which ensures the stability and reliability of the transfer process and avoids printing defects such as blurry images, uneven colors, or missing text caused by unstable transfer current.

[0081] Figure 5 This is a schematic diagram of the structure of a printing control device provided in an embodiment of this application, as shown below. Figure 5 As shown, the device 500 is applied to a laser printing device, which is equipped with a paper detection component and may include:

[0082] The data acquisition module 510 is used to detect the current data of the laser printing device in real time after a first time period when the paper to be printed is detected by the paper detection component.

[0083] The data judgment module 520 is used to determine that the paper to be printed has reached the working area of ​​the transfer roller of the laser printing device if the trend of the change of the current data meets the preset current standard.

[0084] The current adjustment module 530 is used to adjust the transfer current of the transfer roller to a target current value by adjusting the transfer voltage of the transfer roller before the transfer roller performs the transfer operation on the paper to be printed.

[0085] The transfer execution module 540 is used to control the transfer roller to perform a transfer operation on the paper to be printed.

[0086] Furthermore, the aforementioned printing control device may also include: a duration determination module;

[0087] The duration determination module is used to obtain a first distance between the paper detection component and the transfer roller, and to obtain the running speed of the paper to be printed; to take a value that is less than the first distance by a preset distance as the estimated distance at which the paper to be printed will reach the working area of ​​the transfer roller; and to divide the preset distance and the running speed to obtain the first duration.

[0088] Furthermore, the aforementioned data judgment module 520 can be specifically used to: record the first detected current value; if a second current value that differs from the first current value by a preset difference is detected, then it is determined that the paper to be printed has reached the working area of ​​the transfer roller.

[0089] Furthermore, the aforementioned current adjustment module 530 can be specifically used to: determine whether the trend of the current data is stable before adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller; if it is stable, then perform the operation of adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller.

[0090] Furthermore, the aforementioned current adjustment module 530 can be specifically used to: adjust the transfer voltage to a target voltage value; determine the current transfer current of the transfer roller when the trend of the transfer voltage tends to stabilize; adjust the transfer voltage based on the difference between the current transfer current and the target current value; and repeatedly perform the operation of determining the current transfer current of the transfer roller when the trend of the transfer voltage tends to stabilize until the current transfer current reaches the target current value.

[0091] Furthermore, the aforementioned current adjustment module 530 can be specifically used to: determine the voltage adjustment range of the transfer voltage, the voltage adjustment range including a maximum voltage value and a target voltage value, the voltage adjustment range including a sub-voltage range corresponding to the target voltage value; apply voltage to the transfer roller using the maximum voltage value for a second duration, such that after the second duration, the transfer voltage is increased to the sub-voltage range; apply voltage to the transfer roller using the target voltage value, so that the transfer voltage stabilizes to the target voltage value.

[0092] In one embodiment, the maximum voltage value is greater than the target voltage value, and the second duration is the time, as measured by experiment, required to apply voltage to the transfer roller using the maximum voltage value, thereby increasing the transfer voltage to the target voltage value.

[0093] The printing control device provided in this embodiment can be applied to the printing control method provided in any of the above embodiments, and has corresponding functions and beneficial effects.

[0094] Figure 6 This is a block diagram of a laser printing apparatus used to implement a printing control method according to an embodiment of this application. The laser printing apparatus 10 is intended to represent various forms of digital computers, such as laptop computers, desktop computers, workbenches, personal digital assistants, servers, blade servers, mainframe computers, and other suitable computers. The laser printing apparatus can also represent various forms of mobile devices, such as personal digital processors, cellular phones, smartphones, wearable devices (such as helmets, glasses, watches, etc.), and other similar computing devices. The components shown herein, their connections and relationships, and their functions are merely examples and are not intended to limit the implementation of the present application described and / or claimed herein.

[0095] like Figure 6 As shown, the laser printing device 10 includes at least one processor 11 and a memory, such as a read-only memory (ROM) 12 or a random access memory (RAM) 13, communicatively connected to the at least one processor 11. The memory stores computer programs executable by the at least one processor. The processor 11 can perform various appropriate actions and processes based on the computer programs stored in the ROM 12 or loaded from storage unit 18 into the RAM 13. The RAM 13 can also store various programs and data required for the operation of the laser printing device 10. The processor 11, ROM 12, and RAM 13 are interconnected via a bus 14. An input / output (I / O) interface 15 is also connected to the bus 14.

[0096] Multiple components in the laser printer 10 are connected to the I / O interface 15, including: an input unit 16, such as a keyboard, mouse, etc.; an output unit 17, such as various types of displays, speakers, etc.; a storage unit 18, such as a disk, optical disk, etc.; and a communication unit 19, such as a network card, modem, wireless transceiver, etc. The communication unit 19 allows the laser printer 10 to exchange information / data with other devices through computer networks such as the Internet and / or various telecommunications networks.

[0097] Processor 11 can be a variety of general-purpose and / or special-purpose processing components with processing and computing capabilities. Some examples of processor 11 include, but are not limited to, a central processing unit (CPU), a graphics processing unit (GPU), various special-purpose artificial intelligence (AI) computing chips, various processors running machine learning model algorithms, digital signal processors (DSPs), and any suitable processor, controller, microcontroller, etc. Processor 11 performs the various methods and processes described above, such as print control methods.

[0098] In some embodiments, the printing control method may be implemented as a computer program tangibly contained in a computer-readable storage medium, such as storage unit 18. In some embodiments, part or all of the computer program may be loaded and / or mounted on the laser printing device 10 via ROM 12 and / or communication unit 19. When the computer program is loaded into RAM 13 and executed by processor 11, one or more steps of the printing control method described above may be performed. Alternatively, in other embodiments, processor 11 may be configured to perform the printing control method by any other suitable means (e.g., by means of firmware).

[0099] Various embodiments of the systems and techniques described above herein can be implemented in digital electronic circuit systems, integrated circuit systems, field-programmable gate arrays (FPGAs), application-specific integrated circuits (ASICs), application-specific standard products (ASSPs), systems-on-a-chip (SoCs), payload-programmable logic devices (CPLDs), computer hardware, firmware, software, and / or combinations thereof. These various embodiments may include implementations in one or more computer programs that can be executed and / or interpreted on a programmable system including at least one programmable processor, which may be a dedicated or general-purpose programmable processor, capable of receiving data and instructions from a storage system, at least one input device, and at least one output device, and transmitting data and instructions to the storage system, the at least one input device, and the at least one output device.

[0100] Computer programs used to implement the methods of this application may be written in any combination of one or more programming languages. These computer programs may be provided to a processor of a general-purpose computer, a special-purpose computer, or other programmable data processing device, such that when executed by the processor, the computer programs cause the functions / operations specified in the flowcharts and / or block diagrams to be performed. The computer programs may be executed entirely on a machine, partially on a machine, or as a standalone software package, partially on a machine and partially on a remote machine, or entirely on a remote machine or server.

[0101] In the context of this application, a computer-readable storage medium can be a tangible medium that may contain or store a computer program for use by or in conjunction with an instruction execution system, apparatus, or device. A computer-readable storage medium can be, but is not limited to, electronic, magnetic, optical, electromagnetic, infrared, or semiconductor systems, apparatus, or devices, or any suitable combination of the foregoing. Alternatively, a computer-readable storage medium can be a machine-readable signal medium. More specific examples of machine-readable storage media include electrical connections based on one or more wires, portable computer disks, hard disks, random access memory (RAM), read-only memory (ROM), erasable programmable read-only memory (EPROM or flash memory), optical fiber, portable compact disk read-only memory (CD-ROM), optical storage devices, magnetic storage devices, or any suitable combination of the foregoing.

[0102] To provide user interaction, the systems and techniques described herein can be implemented on a laser printing device having: a display device for displaying information to the user (e.g., a CRT (cathode ray tube) or LCD (liquid crystal display) monitor); and a keyboard and pointing device (e.g., a mouse or trackball) through which the user provides input to the laser printing device. Other types of devices can also be used to provide user interaction; for example, feedback provided to the user can be any form of sensory feedback (e.g., visual feedback, auditory feedback, or tactile feedback); and input from the user can be received in any form (including sound input, voice input, or tactile input).

[0103] The systems and technologies described herein can be implemented in computing systems that include backend components (e.g., as data servers), middleware components (e.g., application servers), or frontend components (e.g., user computers with graphical user interfaces or web browsers through which users can interact with implementations of the systems and technologies described herein), or any combination of such backend, middleware, or frontend components. The components of the system can be interconnected via digital data communication of any form or medium (e.g., communication networks). Examples of communication networks include local area networks (LANs), wide area networks (WANs), blockchain networks, and the Internet.

[0104] A computing system can include clients and servers. Clients and servers are generally located far apart and typically interact through communication networks. The client-server relationship is created by computer programs running on the respective computers and having a client-server relationship with each other. The server can be a cloud server, also known as a cloud computing server or cloud host, which is a hosting product within the cloud computing service system to address the shortcomings of traditional physical hosts and VPS services, such as high management difficulty and weak business scalability.

[0105] Note that the above are merely preferred embodiments and technical principles applied in this application. Those skilled in the art will understand that this application is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of this application. For example, those skilled in the art can use the various forms of processes shown above to reorder, add, or delete steps; the steps described in this application can be executed in parallel, sequentially, or in different orders, as long as the desired results of the technical solution of this application can be achieved, and no limitations are imposed herein.

[0106] The specific embodiments described above do not constitute a limitation on the scope of protection of this application. Those skilled in the art should understand that various modifications, combinations, sub-combinations, and substitutions can be made according to design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the scope of protection of this application.

Claims

1. A print control method characterized by, The method is applied to a laser printing device provided with a paper detection component, and comprises the following steps: When a paper to be printed is detected by the paper detection component, current data of the laser printing device is detected in real time after a first time length; If a change trend of the current data meets a preset current standard, it is determined that the paper to be printed has reached a working area of a transfer roller of the laser printing device; Before the transfer roller performs a transfer operation on the paper to be printed, a transfer current of the transfer roller is adjusted to a target current value by adjusting a transfer voltage of the transfer roller; The transfer roller performs the transfer operation on the paper to be printed.

2. The print control method according to claim 1, characterized by, The first time length is determined by the following steps: A first distance between the paper detection component and the transfer roller is obtained, and a running speed of the paper to be printed is obtained; A value smaller than the first distance by a preset distance is taken as an estimated distance at which the paper to be printed is about to reach the working area of the transfer roller; The preset distance and the running speed are subjected to a division operation to obtain the first time length.

3. The print control method according to claim 1, characterized by, If the change trend of the current data meets the preset current standard, it is determined that the paper to be printed has reached the working area of the transfer roller of the laser printing device, comprising the following steps: A first current value detected for the first time is recorded; If a second current value different from the first current value by more than a preset difference value is detected, it is determined that the paper to be printed has reached the working area of the transfer roller.

4. The print control method according to claim 1, characterized by, Before the transfer current of the transfer roller is adjusted to the target current value by adjusting the transfer voltage of the transfer roller, the following steps are further included: It is determined whether a change trend of the current data tends to be stable; If the change trend tends to be stable, the operation of adjusting the transfer current of the transfer roller to the target current value by adjusting the transfer voltage of the transfer roller is performed.

5. The print control method according to claim 1, characterized by, The transfer current of the transfer roller is adjusted to the target current value by adjusting the transfer voltage of the transfer roller, comprising the following steps: The transfer voltage is adjusted to a target voltage value; When a change trend of the transfer voltage tends to be stable, a current transfer current of the transfer roller is determined; The transfer voltage is adjusted based on a difference between the current transfer current and the target current value; The operation of determining the current transfer current of the transfer roller when the change trend of the transfer voltage tends to be stable is repeatedly performed until the current transfer current reaches the target current value.

6. The print control method according to claim 5, characterized by, The transfer voltage is adjusted to the target voltage value, comprising the following steps: A voltage adjustment interval of the transfer voltage is determined, the voltage adjustment interval comprising a maximum voltage value and a target voltage value, and the voltage adjustment interval comprising a sub-voltage interval corresponding to the target voltage value; The maximum voltage value is applied to the transfer roller for a second time length, so that the transfer voltage is increased to the sub-voltage interval after the second time length; The target voltage value is applied to the transfer roller, so that the transfer voltage is stabilized to the target voltage value.

7. The print control method according to claim 6, characterized by, The maximum voltage value is greater than the target voltage value, and the second time length is a time length measured by experiments in which the maximum voltage value is applied to the transfer roller to make the transfer voltage increase by the target voltage value.

8. A print control device, characterized by, Applied to a laser printing device, the laser printing device is configured with a paper detection component, and the device comprises: a data acquisition module, configured to detect current data of the laser printing device in real time after a first time period when a paper to be printed is detected by the paper detection component; a data judgment module, configured to determine that the paper to be printed has reached a working area of a transfer roller of the laser printing device if a change trend of the current data meets a preset current standard; a current adjustment module, configured to adjust a transfer current of the transfer roller to a target current value by adjusting a transfer voltage of the transfer roller before the transfer roller performs a transfer operation on the paper to be printed; a transfer execution module, configured to control the transfer roller to perform a transfer operation on the paper to be printed.

9. A laser printing apparatus, characterized by comprising: The laser printing device comprises: at least one processor; and a memory connected in communication with the at least one processor; wherein the memory stores a computer program executed by the at least one processor, and the computer program is executed by the at least one processor to enable the at least one processor to execute the printing control method of any one of claims 1 to 7.

10. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer instructions for enabling the processor to execute the printing control method of any one of claims 1 to 7 when executed.

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