Intelligent pressure feedback powder outletting knife
By using intelligent pressure feedback toner dispenser, the position of the toner dispenser is adjusted by a monitor and a gear linked to a spring. Combined with a display screen and indicators to assist in installation and maintenance, this solves the print quality problem caused by fluctuations in toner dispenser pressure, improves equipment maintenance efficiency, and reduces operating costs.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- ZHUHAI HUAYU INTELLIGENT TECHNOLOGY CO LTD
- Filing Date
- 2025-07-14
- Publication Date
- 2026-08-04
AI Technical Summary
Pressure fluctuations between the existing toner blade and the developing roller cause uneven toner layer thickness, affecting print quality. Moreover, the repair process is complex and time-consuming, especially in wide-format equipment where local wear can spread to cause printing abnormalities across the entire line, resulting in high maintenance costs.
It adopts intelligent pressure feedback to dispense powder blades. The position of the powder blades is adjusted by a monitor and spring linkage, combined with gear meshing and guide rod. It is equipped with a display screen and indicator for pressure visualization and threshold judgment to assist in installation and maintenance.
It automates and visualizes the adjustment of powder discharge blade pressure, improves installation efficiency, reduces reliance on manual labor, enables timely detection and resolution of anomalies, and lowers operation and maintenance costs.
Smart Images
Figure CN224594995U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of printer manufacturing technology, and in particular to an intelligent pressure feedback toner dispenser. Background Technology
[0002] The toner ejector blade is one of the core components in the developing unit of electronic imaging equipment such as laser printers and copiers. It is usually installed below the developing roller and forms linear contact with the surface of the developing roller through a precision blade. It mainly performs two functions: first, it scrapes off excess toner from the surface of the developing roller to form a uniform and controllable toner layer; second, it charges the toner through friction, ensuring that the toner is accurately adsorbed to the latent image area of the photosensitive drum under electrostatic action, which directly affects the clarity, density, and uniformity of the printed image.
[0003] In existing technology, the toner layer thickness is controlled by static mechanical pressure between the toner ejector blade and the developing roller. The blade is pressed against the surface of the rotating developing roller with a fixed pressure, relying on the deformation properties of the material to maintain the contact pressure. As the toner flows through the gap between the blades under the drive of the developing roller, excess toner is blocked and scraped back into the toner hopper, allowing only a single layer of particles to pass through, thereby controlling the toner layer thickness transferred to the photosensitive drum. The stability of this process directly depends on the constancy of the pressure between the toner ejector blade and the developing roller and the uniformity of contact.
[0004] However, pressure fluctuates due to installation tolerances, material aging, and environmental temperature and humidity, causing uneven toner layer thickness and resulting in gray or streaks in the print. The blade installation angle and pressure fine-tuning are highly dependent on manual experience, and even slight deviations can cause wear on the developing roller or loss of toner layer control. Over long-term operation, blade wear leads to irreversible pressure decay, making it difficult for users to detect gradual printing degradation in a timely manner. In particular, for long-sized toner blades in wide-format equipment, local wear can spread to printing abnormalities across the entire line, and the repair process is complex and time-consuming, significantly increasing maintenance costs. Utility Model Content
[0005] To overcome the drawback of relying on manual adjustment for pressure fluctuations, this invention provides an intelligent pressure feedback powder discharge knife, aiming to solve the aforementioned shortcomings.
[0006] A smart pressure feedback toner dispenser includes a toner dispenser blade and a top cover plate. The top cover plate is installed inside a printer. The toner dispenser blade is slidably connected to the bottom of the top cover plate. Several guide rods are connected inside the toner dispenser blade. Several monitors are slidably connected to the toner dispenser blade. The mounting end of the monitor is slidably connected to the guide rod. The monitoring end of the monitor passes through the toner dispenser blade. A spring is sleeved on the guide rod. One end of the spring is connected to the mounting end of the monitor, and the other end of the spring is connected to the toner dispenser blade. An adjustment component for adjusting the position of the toner dispenser blade is provided between the toner dispenser blade and the top cover plate.
[0007] As an improvement to the above solution, the adjusting component includes an inner plate connected to the bottom of the upper cover plate. A rack is fitted on the inner plate and slidably connected to the bottom of the upper cover plate. The bottom surface of the rack is fixedly connected to the powder discharge knife. Two gears are rotatably connected inside the upper cover plate and mesh with each other. The top of the gear shaft passes through the upper cover plate and has a cross opening. The left and right sides of the two gears mesh with the rack, respectively.
[0008] As an improvement to the above solution, the upper cover plate has two symmetrical limiting holes along the central axis, and a limiting pin slides in the limiting hole, and the limiting pin is engaged with the gear.
[0009] As an improvement to the above solution, a display screen is installed on the upper cover plate, and the display screen is wiredly connected to all the monitors.
[0010] As an improvement to the above solution, the upper cover plate and the powder discharge knife connecting rod are fitted with an anti-wear tube, and the outer side of the anti-wear tube is smooth.
[0011] As an improvement to the above solution, an indicator is installed on the upper cover plate, and the indicator is wired to all the monitors.
[0012] Compared with the prior art, the beneficial effects of this utility model are as follows:
[0013] The pressure sensor detects the deformation of the spring, which drives the slide rod to move. The position of the powder knife is adjusted synchronously along the guide rail by the gear meshing of the double rack. Combined with the multi-point pressure visualization on the display screen and the threshold judgment of the indicator, the installation efficiency is improved, wear judgment is assisted, manual reliance is eliminated, and the purpose of auxiliary maintenance is achieved. Attached Figure Description
[0014] Figure 1 This is a schematic diagram of the overall structure of this utility model.
[0015] Figure 2 This is a three-dimensional structural diagram of the rack and gear of this utility model.
[0016] Figure 3 This is a three-dimensional structural diagram of the monitor, spring, and guide rod of this utility model.
[0017] The following are the labels in the diagram: 1. Powder discharge blade, 2. Top cover plate, 3. Monitor, 4. Spring, 5. Guide rod, 6. Gear, 7. Cross-shaped opening, 8. Rack, 9. Inner plate, 10. Limit pin, 11. Display screen, 12. Anti-wear tube, 13. Indicator. Detailed Implementation
[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.
[0019] Example: A smart pressure feedback powder discharge blade, such as Figures 1-3 As shown, the device includes a toner blade 1, an upper cover plate 2, a monitor 3, a spring 4, a guide rod 5, and an adjustment assembly. The upper cover plate 2 is installed inside the printer. The toner blade 1 is slidably connected to the bottom of the upper cover plate 2. Several guide rods 5 are connected inside the toner blade 1. Several monitors 3 are slidably connected to the toner blade 1. The mounting end of the monitor 3 is slidably connected to the guide rod 5. The monitoring end of the monitor 3 passes through the toner blade 1. A spring 4 is sleeved on the guide rod 5. One end of the spring 4 is connected to the mounting end of the monitor 3, and the other end of the spring 4 is connected inside the toner blade 1. An adjustment assembly for adjusting the position of the toner blade 1 is provided between the toner blade 1 and the upper cover plate 2.
[0020] like Figure 2 and Figure 3 As shown, the adjustment assembly includes a gear 6, a rack 8, and an inner plate 9. The inner plate 9 is connected to the bottom of the upper cover plate 2, and only the rear end of the inner plate 9 is fixedly connected to the inside of the upper cover plate 2. The rack 8 is fitted on the inner plate 9 and is slidably connected to the bottom of the upper cover plate 2. The bottom surface of the rack 8 is fixedly connected to the powder discharge knife 1. Two gears 6 are rotatably connected inside the upper cover plate 2. The two gears 6 mesh with each other. The top of the shaft of the gear 6 passes through the upper cover plate 2 and has a cross opening 7. The left and right sides of the two gears 6 mesh with the rack 8 respectively.
[0021] like Figure 1 As shown, it also includes a limiting pin 10. The upper cover plate 2 has two limiting holes that are symmetrical about the central axis. The limiting pin 10 slides in the limiting holes. The limiting pin 10 is engaged with the gear 6 to limit the gear 6 and lock the gear 6 to restrict the rotation of the gear 6. Since the two gears 6 are meshing, one of the two symmetrical holes must be able to insert the limiting pin 10, which is located between the two teeth of the gear 6.
[0022] like Figure 1 As shown, it also includes a display screen 11, which is mounted on the upper cover plate 2 and is wired to all the monitors 3.
[0023] like Figure 2 As shown, it also includes an anti-wear tube 12. The upper cover plate 2 and the powder discharge knife 1 are connected by an anti-wear tube 12 on the outer sleeve of the round rod. The outer side of the anti-wear tube 12 is smooth, so that the movement of the powder discharge knife 1 can be completely transmitted and the pressure transmission will not be lost due to internal friction.
[0024] like Figure 1 As shown, it also includes an indicator 13, which is installed on the upper cover plate 2. The indicator 13 is wired to all the monitors 3, and the indicator 13 integrates a judgment module and a display module to judge the difference in pressure values read by different monitors 3 and light up different colored lights according to the difference.
[0025] During installation, the user first installs the top cover 2 inside the printer, ensuring that the front end of the top cover 2 is parallel to the front end of the toner blade 1, placing the toner blade 1 in its initial state. At this time, the spring 4 inside the toner blade 1 is compressed, and the guide rod 5 is pushed backward by the pressure of the spring 4. Although the monitoring end of the monitor 3 is in slight contact with the internal structure of the printer, it is still confined inside the toner blade 1. The user rotates the cross 7 located on the top cover 2, causing the internal gear 6 to rotate. The gears 6 mesh with each other, enabling the two racks 8 to slide synchronously, pushing the toner blade 1 backward as a whole. The racks 8 slide along a preset trajectory under the guidance of the inner plate 9, effectively preventing the toner blade 1 from deviating, and the anti-wear tube 12 reduces the sliding friction, ensuring a stable and smooth movement of the toner blade 1. As the toner blade 1 moves backward, the spring 4 gradually releases its rebound force, pushing the guide rod 5 forward, and simultaneously causing the monitoring end of the monitor 3 to gradually extend out of the toner blade 1, with the monitoring end continuously contacting the internal structure of the printer. When the monitoring end of the monitor 3 is completely detached from the main body of the toner blade 1, the user stops rotating the gear 6, referring to... Figure 3 Insert the limit pin 10 into the upper cover plate 2 to restrict the rotation of the gear 6. At this time, the powder discharge blade 1 and the developing roller reach the predetermined pressure, completing the installation. Finally, close the printer casing.
[0026] If blurry images or unclear printing occur during printer use, the user can open the casing and activate the display screen 11 to check the pressure. Each monitor 3 will provide real-time feedback of the pressure data at its monitoring end and display the corresponding pressure value on the display screen 11. If the toner blade 1 shakes during operation, causing slight displacement of the guide rod 5, the spring 4 will experience varying degrees of tension changes during stretching, resulting in different pressure values recorded by each monitor 3. At this time, the user can determine whether the abnormal condition of the toner blade 1 is caused by contamination, jamming, or improper installation. During cleaning, the user can activate the indicator 13 to record the pressure change trend of each monitor 3 within a set time period and analyze the stability of the pressure data through the built-in judgment module. After cleaning and reinstallation, the user can activate the display screen 11 and indicator 13 again. The indicator 13 will judge based on the deviation of the pressure monitoring values: if the pressure distribution is uniform, a green light will illuminate; if the pressure deviation in a certain area is still large, a red light will illuminate, indicating the specific location and displaying the specific value. If the overall pressure values are close but the printing effect is still not ideal, it indicates that the toner ejector blade 1 may have poor contact due to long-term wear and should be replaced in time.
[0027] The above embodiments are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Therefore, all equivalent changes made based on the content described in the claims of the present utility model should be included within the scope of the claims of the present utility model.
Claims
1. An intelligent pressure feedback powder outletting blade, characterized in that, The printer includes a powder dispensing blade (1) and a top cover plate (2). The top cover plate (2) is installed inside the printer. The powder dispensing blade (1) is slidably connected to the bottom of the top cover plate (2). Several guide rods (5) are connected inside the powder dispensing blade (1). Several monitors (3) are slidably connected to the powder dispensing blade (1). The mounting end of the monitor (3) is slidably connected to the guide rod (5). The monitoring end of the monitor (3) passes through the powder dispensing blade (1). A spring (4) is sleeved on the guide rod (5). One end of the spring (4) is connected to the mounting end of the monitor (3). The other end of the spring (4) is connected inside the powder dispensing blade (1). An adjustment component for adjusting the position of the powder dispensing blade (1) is provided between the powder dispensing blade (1) and the top cover plate (2).
2. The intelligent pressure feedback powder outletting knife according to claim 1, characterized in that, The adjustment assembly includes an inner plate (9) connected to the bottom of the upper cover plate (2). A rack (8) is fitted on the inner plate (9). The rack (8) is slidably connected to the bottom of the upper cover plate (2). The bottom surface of the rack (8) is fixedly connected to the powder discharge knife (1). Two gears (6) are rotatably connected inside the upper cover plate (2). The two gears (6) mesh with each other. The top of the shaft of the gear (6) passes through the upper cover plate (2) and has a cross opening (7). The left and right sides of the two gears (6) mesh with the rack (8) respectively.
3. The intelligent pressure feedback drop flight as claimed in claim 2, wherein, The upper cover plate (2) has two symmetrical limiting holes along the central axis. A limiting pin (10) slides in the limiting hole and the limiting pin (10) engages with the gear (6) for limiting.
4. The intelligent pressure feedback powder outletting knife according to claim 3, characterized in that, A display screen (11) is mounted on the upper cover plate (2), and the display screen (11) is wired to all the monitors (3).
5. The intelligent pressure feedback powder outletting blade according to claim 4, characterized in that, The upper cover plate (2) and the powder discharge knife (1) are fitted with an anti-wear tube (12) on the outer sleeve of the round rod, and the outer side of the anti-wear tube (12) is smooth.
6. An intelligent pressure feedback powder outletting blade as claimed in claim 5, characterized in that, An indicator (13) is mounted on the upper cover plate (2), and the indicator (13) is wired to all of the monitors (3).