Laser printer

Abstract

The utility model provides a laser printer which comprises a printer body, a fixing roller set and a control mechanism, a working cabin is arranged in the printer body, the fixing roller set is arranged in the working cabin, the control mechanism is electrically connected with the fixing roller set, the laser printer further comprises a detection mechanism and an environment regulation and control mechanism, the detection mechanism is arranged in the working cabin and electrically connected with the control mechanism, and the environment regulation and control mechanism is electrically connected with the detection mechanism. The detection mechanism is used for detecting the temperature, humidity and static electricity in the working cabin, the environment regulation and control mechanism is arranged in the working cabin and comprises a dehumidification unit, a humidification unit and a temperature regulation unit which are electrically connected with the control mechanism, the dehumidification unit is used for reducing the humidity of the working cabin, the humidification unit is used for increasing the humidity of the working cabin, and the temperature regulation unit is used for regulating the temperature of the working cabin. The temperature adjusting unit is used for adjusting the temperature of the working cabin, and the laser can automatically adjust static electricity, temperature and humidity of the printing environment.

Description

Technical Field

[0001] This utility model relates to the field of electrophotographic imaging technology, specifically to a laser printer. Background Technology

[0002] Laser printers, as commonly used printing devices in offices, are susceptible to interference from environmental factors such as temperature, humidity, and static electricity. Current laser printers lack intelligent internal environmental detection and adjustment functions, leading to compatibility issues between the laser printer and toner cartridges when internal temperature, humidity, and static electricity change. This not only affects print quality but also limits the device's applicability. Furthermore, to fuse the toner image on the developing medium (such as paper), the laser printer needs to use a heated fusing roller to heat-press the medium. However, this process generates a significant amount of heat, which exacerbates the contamination of the printer's internal environment by volatile toner particles and printing dust, further impacting print quality.

[0003] In terms of printing mechanism, laser printing is based on the principle of electrostatic development and imaging. However, static electricity can interfere with the transmission of the developing medium and the developing process, and excessive static electricity can even cause electrostatic breakdown, damaging the printing device. For example, electrostatic adsorption can easily cause the developing medium to stick together, thus affecting the normal output of the developing medium. Furthermore, abnormal static electricity during the developing process can cause defects such as gray background and light color in the printed samples. At the same time, changes in ambient temperature and humidity also affect print quality. For example, excessive humidity can cause the paper to become damp, affecting the transmission of the developing medium and causing poor fixing, while excessively low humidity will exacerbate the electrostatic effect and interfere with the electrostatic development process. When existing laser printers are substantially affected by internal factors such as static electricity, temperature, and humidity, the current approach is to stop the laser printer from operating and rely on the natural influence of external environmental conditions to restore the internal environmental parameters of the laser printer to conditions suitable for re-printing. However, this approach is rather passive; the laser printer cannot intelligently adjust its internal environmental parameters autonomously, seriously affecting the user experience. Summary of the Invention

[0004] To address the aforementioned problems, the main objective of this invention is to provide a laser printer that can independently adjust the electrostatic and temperature / humidity of the printing environment.

[0005] To achieve the main objective of this utility model, a laser printer is provided, comprising a body, a fuser roller assembly, and a control mechanism. The body has a working chamber, the fuser roller assembly is located within the working chamber, and the control mechanism is electrically connected to the fuser roller assembly. The laser printer also includes a detection mechanism and an environmental control mechanism. The detection mechanism is located within the working chamber and is electrically connected to the control mechanism. The detection mechanism is used to detect the temperature, humidity, and static electricity within the working chamber. The environmental control mechanism is located within the working chamber and includes a dehumidification unit, a humidification unit, and a temperature control unit, all electrically connected to the control mechanism. The dehumidification unit is used to reduce the humidity within the working chamber, the humidification unit is used to increase the humidity within the working chamber, and the temperature control unit is used to regulate the temperature within the working chamber.

[0006] As can be seen from the above, when the testing mechanism detects excessively high humidity in the working chamber, the control mechanism controls the dehumidification unit to dehumidify the working chamber, reducing humidity and preventing toner, photoconductor drum, and paper from getting damp, thus ensuring print quality. When the testing mechanism detects that the temperature in the working chamber is not within the preset temperature parameters, the control mechanism controls the temperature regulation unit to adjust the temperature in the working chamber based on the difference between the actual temperature and the preset parameters, preventing the temperature from being too high or too low and ensuring print quality and stability. When the testing mechanism detects excessive static electricity in the working chamber, the control mechanism controls the humidification unit to humidify the working chamber appropriately, reducing static electricity and preventing it from affecting paper transfer and print quality, while protecting the printing components. Through the cooperation of the control mechanism, testing mechanism, and environmental control mechanism, intelligent automatic adjustment of temperature, humidity, and static electricity in the laser printer's working chamber can be achieved, thereby ensuring print quality and stability and reducing the probability of damage to the printing components.

[0007] A further embodiment is that the dehumidification unit includes a compressor, an evaporator, a condenser, a throttling element, a first water storage container, and a first fan. The evaporator is connected between the air inlet of the compressor and the first end of the throttling element, and the condenser is connected between the air outlet of the compressor and the second end of the throttling element. The first water storage container is used to recover the condensate from the evaporator, and the first fan is located at the evaporator. The humidification unit includes a water outlet pipe, an atomizer, a second fan, and a water pump. The water outlet of the water outlet pipe is connected to the water inlet of the atomizer, and the air inlet of the second fan is located at the atomizing end of the atomizer. The water pump is connected between the water inlet of the water outlet pipe and the first water storage container. Alternatively, the humidification unit may also include a second water storage container, and the water pump is connected between the water inlet of the water outlet pipe and the second water storage container.

[0008] As can be seen from the above, when the humidity in the working chamber is too high, the dehumidification unit is activated, so that the moisture in the working chamber is condensed into condensate in the evaporator and recycled to the first water storage container for storage, thus preventing condensate from dripping into the working chamber; when the humidity in the working chamber is too low and the static electricity is too high, the humidification unit is activated to humidify the working chamber in order to reduce the static electricity in the working chamber.

[0009] A preferred embodiment is that the working chamber is equipped with a heat insulation component covering the fuser roller assembly, the heat insulation component having a paper feeding channel that passes through the fuser roller assembly in the conveying direction of the fuser roller assembly.

[0010] As can be seen from the above, the heat insulation component can prevent the fuser roller assembly from transferring heat to the working chamber through the thermal convection of the air, thus alleviating unnecessary temperature rise in the working chamber; the paper path is used for the development medium (such as paper) to pass through, so that the paper can pass between the two fuser rollers of the fuser roller assembly, ensuring that the toner image is permanently fixed on the development medium.

[0011] A further embodiment is that the dehumidification unit also includes a water receiving tray and a water inlet pipe. The water receiving tray is used to receive condensate, and the water inlet pipe is connected between the water receiving tray and the first water storage container. At least part of the water inlet pipe is located inside the heat insulation component and is arranged around the fixing roller assembly; and / or at least part of the water outlet pipe is located inside the heat insulation component and is arranged around the fixing roller assembly.

[0012] As can be seen from the above, this design enables the dehumidification unit and / or humidification unit to recover and utilize the heat of the fixing roller assembly and to perform appropriate cooling treatment on the fixing roller assembly.

[0013] A further proposed solution is to install a filter cleaning unit between the water tray and the water inlet pipe; or to install a filter cleaning unit between the evaporator and the first fan.

[0014] As can be seen from the above, the filtration and cleaning unit can filter the condensate entering the water inlet pipe, preventing dust (such as toner, dust, etc.) mixed in the condensate from being recycled to the first water storage container. This prevents the atomized water mist from contaminating the developing medium and causing secondary contamination of the working chamber when the humidification unit uses water from the first water storage container for atomization humidification.

[0015] Another preferred embodiment is that the temperature control unit includes a heater and a cooling fan assembly, the heater is located inside the working chamber, and / or the heater is located on the water outlet pipe, along the water outlet direction of the water outlet pipe, the heater is located upstream of the water inlet end of the atomizer; the body is provided with a heat dissipation hole group, the heat dissipation hole group is connected to the working chamber, and the cooling fan assembly is located at the heat dissipation hole group.

[0016] As can be seen from the above, placing the heater on the water outlet pipe helps to improve humidification efficiency; placing the heater inside the working chamber helps to quickly heat up the working chamber; and the design of the heat dissipation hole group and cooling fan assembly helps to quickly cool down the working chamber.

[0017] Another preferred embodiment is that the laser printer also includes a paper tray mounted on the machine body and retractable into the work chamber; the paper tray has a receiving cavity and a humidification channel communicating with the receiving cavity, and the outlet of the second fan is positioned facing the inlet of the humidification channel.

[0018] As can be seen from the above, this design helps to reduce static electricity between developing media and prevents them from adsorbing and sticking together due to static electricity, thereby ensuring that the developing media can be reliably delivered to the processing cartridge.

[0019] Another preferred embodiment is that the detection mechanism includes a temperature sensor, a humidity sensor, an electrostatic discharge sensor, a first monitoring unit, and a second monitoring unit. The temperature sensor is used to detect the temperature inside the working chamber, the humidity sensor is used to detect the humidity inside the working chamber, and the electrostatic discharge sensor is used to detect the electrostatic discharge inside the working chamber. The first monitoring unit is located at the first fan and is used to monitor the temperature and / or humidity at the first fan. The second monitoring unit is located at the second fan and is used to monitor the temperature and / or humidity at the second fan.

[0020] As can be seen from the above, in addition to detecting the temperature, humidity and static electricity in the working chamber through temperature sensors, humidity sensors and static electricity detection sensors, the testing agency can also monitor the air temperature and humidity at the evaporator through the first monitoring unit to assist the control mechanism in adjusting the speed of the first fan and the evaporation temperature of the evaporator; and monitor the temperature and humidity at the atomizer through the second detection unit to assist the control mechanism in adjusting the speed of the second fan and the atomization degree of the atomizer.

[0021] A further improvement is that the laser printer also includes a paper output tray, a sealing cover, and a drive mechanism. The paper output tray is located on the top of the machine body, the sealing cover is movably connected to the machine body, and the drive mechanism is connected between the machine body and the sealing cover. The drive mechanism can drive the sealing cover to close the sealing cover on the top of the machine body and seal the paper output tray. The drive mechanism is electrically connected to the control mechanism.

[0022] As can be seen above, due to the large gap between the output tray and the machine body, this gap allows the working chamber to be connected to the outside world, causing the external temperature and humidity to have a significant impact on the environmental parameters inside the working chamber. By configuring a sealing cover and a drive mechanism, when it is necessary to adjust the environmental parameters inside the working chamber, the drive mechanism can control the sealing cover to close on the output tray, thereby sealing the gap between the output tray and the machine body and isolating the outside world from the working chamber. This makes the environmental control mechanism more efficient and easier to adjust the environmental parameters inside the working chamber, thereby reducing the energy consumption of the laser printer and the user's waiting time. Attached Figure Description

[0023] Figure 1 This is a reference diagram showing the first usage state of an embodiment of the laser printer of this utility model.

[0024] Figure 2 This is a reference diagram showing the second usage state of an embodiment of the laser printer of this utility model.

[0025] Figure 3 This is a cross-sectional view of the first omitted component of the laser printer embodiment of this utility model.

[0026] Figure 4 This is a cross-sectional schematic diagram of a partial structure after omitting some components in the second embodiment of the laser printer of this utility model.

[0027] Figure 5 This is a system schematic diagram of the dehumidification unit and humidification unit of an embodiment of the laser printer of this utility model.

[0028] The present invention will be further described below with reference to the accompanying drawings and embodiments. Detailed Implementation

[0029] Reference Figures 1 to 5 The laser printer 100 includes a body 1, a fuser roller assembly 21, a paper feed roller assembly 22, a paper input tray 24, an output tray 25, a control mechanism, a detection mechanism, an environmental control mechanism, a heat insulation component 6, and a filter cleaning unit 7. The laser printer 100 contains a processing box 23, located between the paper input tray 24 and the fuser roller assembly 21 along the paper feed direction. The fuser roller assembly 21 is located between the processing box 23 and the output tray 25. The paper feed roller assembly 22 moves the developing medium (such as paper; for ease of understanding, paper is used as an example) placed in the paper input tray 24 sequentially to the photosensitive drum of the processing box 23 for imaging, then to the fuser roller assembly 21 for curing of the developer (such as toner; for ease of understanding, toner is used as an example), and finally to the output tray 25 to output the imaged paper.

[0030] The printer body 1 contains a working chamber 11, within which are housed a fuser roller assembly 21, a processing box 23, a detection mechanism, an environmental control mechanism, a heat insulation component 6, and a filter cleaning unit 7, forming a relatively enclosed space. This prevents the laser printer 100 from being disturbed by the external environment during printing operations, ensuring the imaging quality of the laser printer 100. The fuser roller assembly 21 comprises two parallel fuser rollers, which are electrically connected to the control mechanism. This allows the control mechanism to control the heating of the fuser rollers to solidify the toner on the paper, ensuring stable and reliable adhesion of the toner to the paper.

[0031] The detection mechanism is used to detect the temperature, humidity, and static electricity within the working chamber 11. This assists the control mechanism in controlling the environmental regulation mechanism to intelligently and automatically adjust the working environment within the working chamber 11 based on the actual environmental parameters. This ensures that the environment within the working chamber 11 is maintained in optimal condition, allowing the laser printer 100 and processing cartridge 23 to perfectly match and improve the imaging quality of the laser printer 100. The detection mechanism includes a temperature sensor, a humidity sensor, and a static electricity detection sensor.

[0032] A temperature sensor is used to detect the temperature inside the working chamber 11. The temperature sensor is electrically connected to the control mechanism to feed back the detected temperature information to the control mechanism, enabling the control mechanism to adjust the temperature inside the working chamber 11 through the environmental control mechanism. In this embodiment, a resistance temperature sensor is preferably used; the measurement range of the temperature sensor is preferably between -40℃ and 100℃, and the detection error accuracy is preferably between ±0.5℃. Of course, in other embodiments, other temperature sensors with the same detection function, capable of operating under similar environmental conditions, and having similar detection range and accuracy can also be selected, and these will not be listed here.

[0033] A humidity sensor is used to detect the humidity inside the working chamber 11. The humidity sensor is electrically connected to the control mechanism to feed back the detected humidity information to the control mechanism, enabling the control mechanism to adjust the humidity inside the working chamber 11 through the environmental control mechanism. In this embodiment, a capacitive humidity sensor is preferably used, and the measurement range of the humidity sensor is preferably between 0%RH and 100%RH, with a detection error accuracy preferably between ±2%RH. Of course, in other embodiments, other humidity sensors with the same detection function, capable of operating under similar environmental conditions, and having similar detection range and accuracy can also be used, and these will not be listed here.

[0034] An electrostatic discharge (ESD) sensor is used to detect static electricity within the work chamber 11. The ESD sensor is electrically connected to the control mechanism to feed back the detected ESD information, enabling the control mechanism to reduce or eliminate the impact of ESD on the printing operation through an environmental control mechanism. In this embodiment, an electric field meter is preferably used as the ESD sensor. The measurement range of the electric field meter is preferably between 0.20 kV / m and 20 kV / m, and the detection error accuracy is preferably between ±0.1 kV / m. Of course, in other embodiments, other ESD sensors with the same detection function, capable of operating under similar environmental conditions, and having similar detection range and accuracy, or other types of ESD sensors (such as electrometers), can also be used. These will not be listed here.

[0035] The environmental control mechanism includes a dehumidification unit 51, a humidification unit 52, and a temperature control unit 53. The dehumidification unit 51 reduces the humidity in the working chamber 11 and is electrically connected to the control mechanism, enabling the control mechanism to control its start / stop and adjust its dehumidification parameters. The humidification unit 52 increases the humidity in the working chamber 11 and is also electrically connected to the control mechanism, enabling the control mechanism to control its start / stop and adjust its humidification parameters. The temperature control unit 53 regulates the temperature in the working chamber 11 and is also electrically connected to the control mechanism, enabling the control mechanism to control its start / stop and adjust its temperature regulation parameters. With the cooperation of the dehumidification unit 51, humidification unit 52, and temperature control unit 53, the environmental control mechanism can intelligently and automatically regulate the ambient temperature, humidity, and static electricity (static electricity regulation can be achieved through temperature and humidity control) within the working chamber 11. The same model of laser printer 100 may be used in southern and northern regions. Due to the significant differences in environmental conditions between the south and the north, such as the high temperature and humidity in the south, while the north and northern regions (such as areas without heating and where the ambient temperature may remain below 0°C) are relatively cold and dry (prone to static electricity), by configuring a detection mechanism and an environmental control mechanism in the laser printer 100, the laser printer 100 can be kept in an optimal working state and ensure image quality regardless of whether it is used in the south or the north.

[0036] The dehumidification unit 51 includes a compressor 511, an evaporator 512, a condenser 513, a throttling element 514, a first water storage container 515, a first fan 516, a water receiving tray 517, and a water inlet pipe 518. The evaporator 512 is connected between the air inlet of the compressor 511 and the first end of the throttling element 514, while the condenser 513 is connected between the compressor 511 and the second end of the throttling element 514, forming a refrigeration circuit with the compressor 511, evaporator 512, condenser 513, and throttling element 514. The dehumidification principle of the dehumidification unit 51 is the same as that of existing dehumidifiers, so it will not be described in detail here. In addition, according to existing technology, it is entirely possible to miniaturize the dehumidifier to design a dehumidification unit 51, as in this invention, that can be installed in the working chamber 11 of the laser printer 100.

[0037] The compressor 511 is electrically connected to the control mechanism. Furthermore, if the throttling element 514 is an electronic expansion valve, it is also electrically connected to the control mechanism. The first fan 516 is electrically connected to the control mechanism and is located at the evaporator 512. The first fan 516 draws air from the working chamber 11 to the evaporator 512, allowing heat exchange between the air in the working chamber 11 and the evaporator 512. This causes moisture in the air to condense on the evaporator 512, reducing the humidity in the working chamber 11 and providing some cooling. The condenser 513 of the dehumidification unit 51 can be located outside the working chamber 11 to avoid unnecessarily increasing the temperature inside the working chamber 11 due to heat emitted by the condenser 513. A separate fan can be configured for the condenser 513 to accelerate heat exchange between the outside air and the condenser 513, thus ensuring effective dehumidification. The speed of the first fan 516 can be adjusted via the control mechanism to enhance the dehumidification effect.

[0038] A water collection tray 517 is located at the evaporator 512 and is used to collect the condensate dripping from the evaporator 512. A water inlet pipe 518 is connected between the water collection tray 517 and the first water storage container 515 to guide the condensate collected by the water collection tray 517 into the first water storage container 515 for recycling, preventing the condensate from dripping into the working chamber 11, thereby avoiding the paper, processing box 23, etc. from getting wet.

[0039] Furthermore, a filtration and cleaning unit 7 is provided between the water receiving tray 517 and the water inlet pipe 518. The filtration and cleaning unit 7 can filter the condensate entering the water inlet pipe 518, preventing dust (such as toner, dust, etc.) mixed in the condensate from being recycled to the first water storage container 515. This prevents the atomized water mist from contaminating the paper and causing secondary contamination of the work chamber 11 when the humidification unit 52 uses water from the first water storage container 515 for atomization humidification. Preferably, the filtration and cleaning unit 7 includes an electrostatic precipitator 71 and a high-efficiency filter 72, wherein the electrostatic precipitator 71 is preferably located between the high-efficiency filter 72 and the water receiving tray 517. As another optional solution, the filtration and cleaning unit 7 is located between the evaporator 512 and the first fan 516, so that the dust and harmful gases mixed in the air drawn into the work chamber 11 by the first fan 516 are filtered and cleaned, thereby purifying the printing environment.

[0040] In this embodiment, the humidification unit 52 includes a water outlet pipe 521, an atomizer 522, a second fan 523, and a water pump 524; wherein the atomizer 522, the second fan 523, and the water pump 524 are all electrically connected to the control mechanism. The water outlet end of the water outlet pipe 521 is connected to the water inlet end of the atomizer 522, and the water pump 524 is connected between the water inlet end of the water outlet pipe 521 and the first water storage container 515, so that the water pump 524 can send the condensate water recovered from the first water storage container 515 to the atomizer 522 for atomization, thereby realizing the humidification of the working chamber 11 and the secondary utilization of condensate water. In addition, this design can simplify the structure and layout of the environmental control mechanism, reduce the space required by the environmental control mechanism, and help reduce the volume of the laser printer 100. It should be noted that the user can add water to the first water storage container 515 to ensure that the humidification unit 52 can stably humidify the working chamber 11.

[0041] It should be noted that in some embodiments, the humidification unit 52 may also be equipped with a second water storage container. In this case, the water pump 524 is no longer connected between the water inlet end of the water outlet pipe 521 and the first water storage container 515, but is connected between the water inlet end of the water outlet pipe 521 and the second water storage container. The second water storage container is pre-stored with water, and the user can add water to the second water storage container when the water in the second water storage container is used up.

[0042] The air inlet of the second fan 523 is located at the atomizing end of the atomizer 522. The second fan 523 can accelerate the diffusion speed of the water mist sprayed by the atomizer 522 in the working chamber 11, thereby improving the humidification effect. The speed can be adjusted by the control mechanism to improve the humidification effect, and the speed of the second fan 523 can be the same as or different from the speed of the first fan 516.

[0043] In this embodiment, the atomizer 522 is preferably a small ultrasonic atomizer 522, and its atomization volume is preferably between 50ml / h and 100ml / h. Of course, in other embodiments, other types of atomizers 522 can also be used, as long as their atomization effect and atomization volume are the same or similar, which will not be listed here.

[0044] In this embodiment, the temperature regulation unit 53 includes a heater 531, which is electrically connected to the control mechanism, enabling the control mechanism to control the heating temperature of the heater 531. The heater 531 is located on the water outlet pipe 521, upstream of the water inlet end of the atomizer 522 along the water outlet direction of the water outlet pipe 521. This design helps to improve humidification efficiency and achieve simultaneous heating and rapid atomization (humidification).

[0045] In some embodiments, the heater 531 is also placed directly inside the working chamber 11 instead of on the water outlet pipe 521. Placing the heater 531 directly inside the working chamber 11 helps to quickly heat up the working chamber 11. This design allows the laser printer 100 to be better suited for low-temperature regions, shortens the preset time of the laser printer 100, and improves the printing efficiency of the laser printer 100.

[0046] In some embodiments, heaters 531 may be installed in both the water outlet pipe 521 and the working chamber 11.

[0047] In this embodiment, the heat from the fixing roller assembly 21 is also recovered and utilized. It should be noted that when the recovered heat from the fixing roller assembly 21 is sufficient to meet the heating requirements within the working chamber 11, the heater 531 is not required. If the recovered heat from the fixing roller assembly 21 is insufficient to meet the heating requirements within the working chamber 11, then the recovered heat from the fixing roller assembly 21 can assist the heater 531 in heating the working chamber 11, thereby reducing energy consumption. Specifically:

[0048] The laser printer 100 also includes a heat insulation component 6, which is disposed within the working chamber 11 and covers the fuser roller assembly 21 to prevent the fuser roller assembly 21 from transferring heat to the working chamber 11 through air convection, thus mitigating unnecessary temperature rise within the working chamber 11. The heat insulation component 6 has a paper feed path 61 that passes through the fuser roller assembly 21 in the conveying direction of the assembly. The paper feed path 61 allows paper to pass through the heat insulation component 6 and ensures that the paper passes between the two fuser rollers, so that the toner on the paper is permanently fixed to the paper, guaranteeing image quality.

[0049] At least a portion of the water inlet pipe 518 of the dehumidification unit 51 is located within the heat insulation member 6, and this portion of the water inlet pipe 518 is arranged around the fixing roller assembly 21, allowing the condensate in the water inlet pipe 518 to exchange heat with the heat emitted by the fixing roller, thereby reducing the unnecessary temperature rise of the working chamber 11 caused by the heat emitted by the fixing roller. And / or, at least a portion of the water outlet pipe 521 of the humidification unit 52 is located within the heat insulation member 6, and this portion of the water outlet pipe 521 is arranged around the fixing roller assembly 21, allowing the water in the water outlet pipe 521 to exchange heat with the heat emitted by the fixing roller, thereby reducing the unnecessary temperature rise of the working chamber 11 caused by the heat emitted by the fixing roller; simultaneously, the water temperature after this heat exchange is increased, so that after being atomized by the atomizer 522, the diffusion rate of the water mist in the working chamber 11 can be increased, thereby improving the humidification effect and humidification efficiency.

[0050] Furthermore, a monitoring circulation sleeve 62 is provided within the heat insulation component 6. The monitoring circulation sleeve 62 is located between the fixing roller, the water inlet pipe 518, and the water outlet pipe 521. The monitoring circulation sleeve 62 can prevent water leakage from the water inlet pipe 518 and / or the water outlet pipe 521 from affecting the operation of the fixing roller assembly 21, and also prevent moisture from contaminating the fixing roller assembly 21. Preferably, a detection element is provided within the monitoring circulation sleeve 62. This detection element is electrically connected to the control mechanism. This detection element is used to detect whether water leakage occurs in the water inlet pipe 518 and / or the water outlet pipe 521 and feeds back to the control mechanism. When a water leakage problem is detected, the control mechanism can remind the user via the communication module to the client or the laser printer 100, or promptly suspend the operation of the laser printer 100 and perform error processing.

[0051] In some embodiments, the detection mechanism further includes a first monitoring unit 41 and / or a second monitoring unit 42, both of which are electrically connected to the control mechanism. The first monitoring unit 41 is located at the first fan 516 and is used to monitor the temperature and / or humidity at the first fan 516. By monitoring the air temperature and humidity at the evaporator 512, the first monitoring unit 41 can assist the control mechanism in adjusting the speed of the first fan 516, the evaporation temperature of the evaporator 512, etc. The second monitoring unit 42 is located at the second fan 523 and is used to monitor the temperature and / or humidity at the second fan 523. By monitoring the temperature and humidity at the atomizer 522, the second monitoring unit 42 can assist the control mechanism in adjusting the speed of the second fan 523, the atomization degree of the atomizer 522, etc. It should be noted that there are no strict restrictions on the specific installation positions of the first monitoring unit 41 and the second monitoring unit 42. The positions of the first monitoring unit 41 and the second monitoring unit 42 can be freely adjusted as long as they achieve their required functions. In addition, the first monitoring unit 41 and the second monitoring unit 42 can be a combination of temperature sensors and humidity sensors, or they can be a single sensor with functions such as monitoring temperature and humidity.

[0052] In some embodiments, the temperature regulation unit 53 further includes a cooling fan assembly 532; wherein, the body 1 is provided with a heat dissipation hole group 12, the heat dissipation hole group 12 is connected to the working compartment 11, and the heat dissipation hole group 12 is preferably located at the bottom of the body 1 to reduce the impact of the external environment on the working compartment 11. The heat dissipation assembly is located at the heat dissipation hole group 12 (it can be located outside the body 1, inside the working compartment, or inside the heat dissipation hole group 12). It should be noted that the number of heat dissipation hole groups 12 and cooling fan assemblies 532 is not limited to one set, and can be set to two or more sets according to actual needs, and the position is not absolutely limited to the bottom of the body 1. By adding heat dissipation hole groups 12 and cooling fan assemblies 532, it is helpful to accelerate the cooling process of the working compartment 11.

[0053] The paper feed tray 24 is mounted on the machine body 1. The paper feed tray 24 is a drawer-type paper feed tray, which allows the paper feed tray 24 to be recycled into the working chamber 11. The paper feed tray 24 has a receiving cavity 241 for storing paper. The paper feed tray 24 is provided with a humidification channel 242 communicating with the receiving cavity 241. The air outlet of the second fan 523 of the humidification unit 52 is arranged facing the inlet of the humidification channel 242, so that the water mist sprayed by the atomizer 522 can enter the humidification channel 242 and the receiving cavity 241 under the action of the second fan 523, thereby reducing the static electricity between the papers and preventing the papers from adsorbing and sticking together due to static electricity, thereby ensuring that the papers can be reliably conveyed one by one to the processing box 23. As can be seen, the paper in the paper tray 24 can fully receive humid air through the humidification channel 242. This full reception of humid air will not cause the paper to become damp and soft. Rather, it means that the paper is fully exposed to water mist, which weakens or even eliminates static electricity between the papers. In other words, the full humidification of this part will not affect the imaging quality or printing quality.

[0054] The output tray 25 is located at the top of the printer body 1. After the paper has been imaged, it is sent to the output tray 25 to store the imaged paper and facilitate user retrieval. To quickly reduce or increase humidity, the laser printer 100 preferably also includes a sealing cover 26 and a drive mechanism. The sealing cover 26 is movably connected to the printer body 1, and the drive mechanism is connected between the printer body 1 and the sealing cover 26. The drive mechanism is electrically connected to the control mechanism, allowing it to drive the sealing cover 26 to seal and close the top of the printer body 1, thus sealing the output tray 25. Preferably, the sealing cover 26 has a sealing element that seals the gap between the sealing surface and the printer body 1 when the sealing cover 26 is closed on the top of the printer body 1, thereby ensuring effective temperature, humidity, and static electricity regulation.

[0055] Because there is a large gap between the output tray 25 and the machine body 1, this gap allows the working chamber 11 to be connected to the outside world, causing the temperature and humidity of the outside world to have a significant impact on the environmental parameters inside the working chamber 11. By configuring the sealing cover 26 and the drive mechanism, when it is necessary to adjust the environmental parameters inside the working chamber 11, the drive mechanism can control the sealing cover 26 to close on the output tray 25 to seal the gap between the output tray 25 and the machine body 1, isolating the outside world from the working chamber 11. This makes the environmental control mechanism more efficient and easier to adjust the environmental parameters of the working chamber 11, thereby reducing the energy consumption of the laser printer 100 and the user's waiting time.

[0056] When the testing agency detects excessive humidity inside the working chamber 11, the control agency controls the dehumidification unit 51 to dehumidify the working chamber 11, reducing the humidity and preventing toner, photoconductor drum, and paper from getting damp, thus ensuring print quality. When the testing agency detects that the temperature inside the working chamber 11 is not within the preset temperature parameters, the control agency controls the temperature regulation unit 53 to adjust the temperature inside the working chamber 11 based on the difference between the actual temperature parameters and the preset temperature parameters, preventing the temperature inside the working chamber 11 from being too high or too low, thus ensuring print quality and print stability. When the testing agency detects excessive static electricity inside the working chamber 11, the control agency controls the humidification unit 52 to humidify the working chamber 11 appropriately, reducing static electricity and preventing it from affecting paper transfer and print quality, while protecting the printing devices. The dehumidification unit 51, humidification unit 52, and temperature regulation unit 53 can work in combination (e.g., simultaneously, or sequentially) according to actual adjustment needs. It is evident that, through the coordination of the control mechanism, the testing mechanism, and the environmental control mechanism, intelligent automatic adjustment of temperature, humidity, static electricity, etc., within the working chamber 11 of the laser printer 100 can be achieved, thereby ensuring print quality and print stability, and reducing the probability of damage to the printing device.

[0057] It should be noted that the driving methods for the fuser roller group 21, paper feed roller group 22, processing box 23, etc. are the same as those for existing laser printers, so they will not be described in detail here.

[0058] Furthermore, the laser printer 100 also includes a display control unit 27, which is preferably mounted on the sealing cover 26. Preferably, the display control unit 27 can be a touch screen or a combination of a display screen and buttons. The display control unit 27 can be used to display the current working status of the laser printer 100, including but not limited to temperature parameters, humidity parameters, static electricity parameters in the working chamber 11, the operating status of the laser printer 100, the toner balance in the processing tray 23, the paper balance in the paper tray, etc.; and the display control unit 27 allows the user to set the operating parameters of the laser printer 100, including but not limited to setting preset temperature parameters, preset humidity parameters, and preset static electricity parameters of the laser printer 100. The preset temperature parameter is the optimal temperature parameter for the laser printer 100 during operation, the preset humidity parameter is the optimal humidity parameter for the laser printer 100 during operation, and the preset electrostatic parameter is the optimal electrostatic parameter for the laser printer 100 during operation. Preferably, the preset temperature parameter is between 18°C ​​and 28°C, the preset humidity parameter is between 45%RH and 65%RH, and the preset electrostatic parameter is between 510kV / m and 10kV / m (electrostatic field strength range).

[0059] The following is a brief description of how the laser printer 100 works:

[0060] When the laser printer 100 starts up, it acquires preset temperature parameters, preset humidity parameters, and preset electrostatic parameters. These preset parameters can be set before the laser printer 100 leaves the factory, or they can be manually set by the user after the laser printer 100 leaves the factory through the display control unit 27 on the laser printer 100, the client, etc.

[0061] Preferably, before the laser printer 100 starts a printing job and / or after the laser printer 100 finishes printing, the actual temperature, humidity, and static electricity parameters inside the working chamber 11 are obtained by a detection mechanism. Then, based on the differences between the actual temperature parameters and preset temperature parameters, the actual humidity parameters and preset humidity parameters, and the actual static electricity parameters and preset static electricity parameters, the environmental control mechanism adjusts the temperature, humidity, and static electricity inside the working chamber 11.

[0062] The actual temperature, humidity, and electrostatic parameters can be automatically acquired by a control program built into the control mechanism. For example, the control program can be set to automatically acquire the actual temperature, humidity, and electrostatic parameters inside the working chamber 11 after the laser printer 100 is started and before the printing job begins, and / or, the control program can be set to automatically acquire the actual temperature, humidity, and electrostatic parameters inside the working chamber 11 after the laser printer 100 finishes printing (while the laser printer 100 remains running). Of course, the actual temperature, humidity, and electrostatic parameters can also be acquired after receiving control commands input by the user through the display control unit 27 or the client. For example, after the laser printer 100 is started, the user can send a command to the control mechanism through the display control unit 27 or the client to adjust the environmental parameters of the working chamber 11, causing the control mechanism to control the detection mechanism to acquire the actual temperature, humidity, and electrostatic parameters inside the working chamber 11. The optimal time to adjust the environmental parameters inside the working chamber 11 is usually before the start of a single or subsequent print job to improve print quality. The next best time is after the end of a single or subsequent print job (while the laser printer 100 remains running) to ensure print quality for the next print job. Of course, it can also be done during a print job, but doing so during a print job may have a slight impact on the operation of the processing cartridge 23, the fuser roller assembly 21, etc. Therefore, it is usually preferred to adjust the environmental parameters of the working chamber 11 before or after the start of a print job.

[0063] Furthermore, the control program built into the control mechanism can pre-set various environmental parameter adjustment modes, such as automatic adjustment mode, normal mode, high temperature and high humidity mode, high temperature and low humidity mode, low temperature and low humidity mode, and low temperature and high humidity mode; among which:

[0064] In automatic adjustment mode, the laser printer 100 can autonomously acquire the actual temperature, humidity and static electricity parameters inside the working chamber 11 and adjust them automatically without user intervention.

[0065] In normal mode, the laser printer 100 does not start the detection mechanism, and in this mode, the laser printer 100 does not perform environmental parameter adjustments within the working chamber 11.

[0066] In high-temperature and high-humidity mode, the temperature and humidity within the working chamber 11 are within a reasonable temperature range (18℃ to 28℃) and a reasonable humidity range (45%RH to 65%RH). Both temperatures and humidity are at a relatively high level, allowing the laser printer 100 to be used in cooler and drier areas. This ensures that the temperature, humidity, and electrostatic field within the working chamber 11 are suitable for printing operations. The temperature, humidity, and electrostatic parameters required by the environmental control mechanism in high-temperature and high-humidity mode can be set before the laser printer 100 leaves the factory, or can be defined by the user after the laser printer 100 leaves the factory via the display control unit 27, client software, etc. Furthermore, when the user selects this mode, the laser printer 100 can also enter automatic control (i.e., the laser printer 100 does not need to obtain user instructions to start the detection mechanism and environmental control mechanism) or manual control (i.e., the laser printer 100 needs to obtain user instructions to start the detection mechanism and environmental control mechanism).

[0067] In high-temperature, low-humidity mode, the temperature and humidity within the working chamber 11 are within a reasonable temperature range (18℃ to 28℃) and a reasonable humidity range (45%RH to 65%RH). The temperature is at a slightly higher level, and the humidity is at a slightly lower level, allowing the laser printer 100 to be used in areas with lower temperatures but not excessively dry conditions. This ensures that the temperature, humidity, and electrostatic field within the working chamber 11 are suitable for printing operations. In this high-temperature, low-humidity mode, the temperature, humidity, and electrostatic parameters required by the environmental control mechanism can be set before the laser printer 100 leaves the factory, or can be defined by the user after the laser printer 100 leaves the factory via the display control unit 27, client software, etc. Furthermore, when the user selects this mode, the laser printer 100 can also enter automatic control (i.e., the laser printer 100 does not need to obtain user instructions to start the detection mechanism and environmental control mechanism) or manual control (i.e., the laser printer 100 needs to obtain user instructions to start the detection mechanism and environmental control mechanism).

[0068] In low-temperature and low-humidity mode, the temperature and humidity within the working chamber 11 are within a reasonable temperature range (18℃ to 28℃) and a reasonable humidity range (45%RH to 65%RH). Both temperatures and humidity are at a relatively low level, allowing the laser printer 100 to be used in areas with higher temperatures and less dryness. This ensures that the temperature, humidity, and electrostatic field within the working chamber 11 are suitable for printing operations. In this low-temperature and low-humidity mode, the temperature, humidity, and electrostatic parameters required by the environmental control mechanism can be set before the laser printer 100 leaves the factory, or can be defined by the user after the laser printer 100 leaves the factory via the display control unit 27, client software, etc. Furthermore, when the user selects this mode, the laser printer 100 can also enter automatic control (i.e., the laser printer 100 does not need to obtain user instructions to start the detection mechanism and environmental control mechanism) or manual control (i.e., the laser printer 100 needs to obtain user instructions to start the detection mechanism and environmental control mechanism).

[0069] In low-temperature, high-humidity mode, the temperature and humidity within the working chamber 11 are within a reasonable temperature range (18℃ to 28℃) and a reasonable humidity range (45%RH to 65%RH). The temperature is slightly below the acceptable range, and the humidity is slightly above the acceptable range, allowing the laser printer 100 to be used in warmer, relatively dry areas. This ensures that the temperature, humidity, and electrostatic field within the working chamber 11 are suitable for printing operations. In this low-temperature, high-humidity mode, the temperature, humidity, and electrostatic parameters required by the environmental control mechanism can be set before the laser printer 100 leaves the factory, or can be defined by the user after the laser printer 100 leaves the factory via the display control unit 27, client software, etc. Furthermore, when the user selects this mode, the laser printer 100 can also enter automatic control (i.e., the laser printer 100 does not need to receive user commands to activate the detection mechanism and environmental control mechanism) or manual control (i.e., the laser printer 100 needs to receive user commands to activate the detection mechanism and environmental control mechanism).

[0070] By setting the above environmental parameter adjustment modes, users in different regions can make one-click selections according to the characteristics of the external environment in their region, making it convenient and efficient for users to operate according to their needs, improving the user experience, and at the same time avoiding the laser printer 100 from automatically switching between multiple environmental parameter adjustment modes.

[0071] The acquisition of the command to adjust the environmental parameters of the working chamber 11 can be either automatically acquired by the control program after the laser printer 100 is turned on, or acquired based on a user input command. Acquiring the command based on a user input command can be configured as follows: a command to adjust the environmental parameters of the working chamber 11 sent by the user individually (through the display control unit 27 or the client) to the control mechanism; or a printing command sent by the user to the control mechanism. If it is a printing command, the control mechanism will automatically control the detection mechanism and the environmental adjustment mechanism to adjust the environmental parameters within the working chamber 11 before executing the printing command, and then control the fuser roller group 21, the paper feed roller group 22, the processing box 23, etc., to perform the printing operation.

[0072] In summary, the laser printer 100 and its working method provided by this utility model can, through the cooperation of the detection mechanism and the environmental control mechanism, regulate the temperature, humidity and static electricity in the working chamber 11 by the dehumidification unit 51, humidification unit 52 and temperature adjustment unit 53 of the environmental control mechanism, so as to ensure that the environment in the working chamber 11 is kept in a suitable state, so that the laser printer 100 and the processing box 23 are highly matched and achieve high-quality printing effect.

[0073] Finally, it should be emphasized that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. For those skilled in the art, the present utility model can have various changes and modifications. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. Laser printer, including: The fuselage, which contains a working compartment; A fixing roller assembly, wherein the fixing roller assembly is disposed within the working chamber; A control mechanism, which is electrically connected to the fixing roller assembly; The laser printer is characterized in that it further includes: A detection mechanism is located inside the working chamber and electrically connected to the control mechanism. The detection mechanism is used to detect the temperature, humidity, and static electricity inside the working chamber. An environmental control mechanism is provided inside the working chamber. The environmental control mechanism includes a dehumidification unit, a humidification unit, and a temperature control unit that are electrically connected to the control mechanism. The dehumidification unit is used to reduce the humidity of the working chamber, the humidification unit is used to increase the humidity of the working chamber, and the temperature control unit is used to regulate the temperature of the working chamber.

2. The laser printer according to claim 1, characterized in that: The dehumidification unit includes a compressor, an evaporator, a condenser, a throttling element, a first water storage container, and a first fan. The evaporator is connected between the air inlet of the compressor and the first end of the throttling element, and the condenser is connected between the air outlet of the compressor and the second end of the throttling element. The first water storage container is used to recover the condensate condensed by the evaporator, and the first fan is located at the evaporator. The humidification unit includes a water outlet pipe, an atomizer, a second fan, and a water pump. The water outlet end of the water outlet pipe is connected to the water inlet end of the atomizer, and the air inlet end of the second fan is located at the atomizing end of the atomizer. The water pump is connected between the inlet end of the outlet pipe and the first water storage container, or The humidification unit also includes a second water storage container, and the water pump is connected between the inlet end of the outlet pipe and the second water storage container.

3. The laser printer according to claim 2, characterized in that: The working chamber is equipped with a heat insulation component that covers the fuser roller assembly. The heat insulation component has a paper feeding channel that passes through the fuser roller assembly in the conveying direction of the fuser roller assembly.

4. The laser printer according to claim 3, characterized in that: The dehumidification unit further includes a water receiving tray and a water inlet pipe. The water receiving tray is used to receive the condensate, and the water inlet pipe is connected between the water receiving tray and the first water storage container. At least a portion of the water inlet pipe is disposed within the heat insulation component and surrounds the fixing roller assembly; and / or At least part of the water outlet pipe is located inside the heat insulation component and is arranged around the fixing roller assembly.

5. The laser printer according to claim 4, characterized in that: A filtration and cleaning unit is provided between the water receiving tray and the water inlet pipe; or The filter cleaning unit is provided between the evaporator and the first fan.

6. The laser printer according to claim 2, characterized in that: The temperature regulation unit includes: Heater, the heater being disposed within the working chamber, and / or The heater is installed on the water outlet pipe, and along the water outlet direction of the water outlet pipe, the heater is located upstream of the water inlet end of the atomizer; A cooling fan assembly is provided, wherein the body is provided with a group of heat dissipation holes, the group of heat dissipation holes is connected to the working chamber, and the cooling fan assembly is located at the group of heat dissipation holes.

7. The laser printer according to claim 2, characterized in that: The laser printer also includes a paper feed tray, which is mounted on the machine body and can be retracted into the working chamber; The paper feed tray has a receiving cavity, and the paper feed tray is provided with a humidification channel communicating with the receiving cavity. The air outlet of the second fan is arranged facing the inlet end of the humidification channel.

8. The laser printer according to claim 2, characterized in that: The testing institutions include: A temperature sensor, used to detect the temperature inside the working chamber; A humidity sensor, used to detect the humidity inside the working chamber; An electrostatic detection sensor is used to detect static electricity within the working chamber. A first monitoring unit is disposed at the first fan, and the first monitoring unit is used to monitor the temperature and / or humidity at the first fan. The second monitoring unit is located at the second fan and is used to monitor the temperature and / or humidity at the second fan.

9. The laser printer according to any one of claims 1 to 8, characterized in that: The laser printer also includes: Paper output tray, which is located at the top of the machine body; A sealing cover, which is movably connected to the machine body; A drive mechanism is connected between the machine body and the sealing cover. The drive mechanism can drive the sealing cover to seal and close the top of the machine body and seal the paper tray. The drive mechanism is electrically connected to the control mechanism.

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