Developing solution supply system

Abstract

The utility model discloses a developing solution supply system which comprises a spray head arranged in a developing chamber, a solution supply pipe connected with the spray head, a first positive developing tank and a first negative developing tank, the first positive developing tank is connected with the solution supply pipe through a first connecting pipe, and the first negative developing tank is connected with the solution supply pipe through a second connecting pipe. The liquid supply pipe is further connected with a third connecting pipe, the third connecting pipe is communicated with an external deionized water source, all the connecting pipes are provided with first pump bodies and first valves, and all the first valves are arranged close to the liquid supply pipe. According to the developing solution supply system disclosed by the utility model, due to the arrangement of the third connecting pipe, when the developing solution is switched, an external deionized water source can clean the solution supply pipe through the third connecting pipe, so that the cleanliness in the solution supply pipe is ensured, the phenomenon of chemical reaction of a positive developing solution and a negative developing solution in the solution supply pipe is avoided, and the service life of the developing solution is prolonged. And the supply quality of the developing solution supply system is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to display device manufacturing technical field especially relates to a developing liquid supply system. BACKGROUND

[0002] The manufacturing process of the liquid crystal display panel usually includes coating, pre-baking, exposure, development, baking and the like. The development is particularly important for the width and form of the formed pattern, and the development process generally uses the developing liquid to dissolve the photoresist not irradiated by light.

[0003] Referring to Figure 1 At present, the space in the developing chamber 1' is limited, and usually one developing nozzle 2' is used to cooperate with the developing liquid supply system outside the developing chamber 1' through the connecting pipe 3'. The existing chemical developing liquid supply system includes the positive developing tank 4' provided with the positive developing liquid, the negative developing tank 5' provided with the negative developing liquid and two supply pipes 6', the positive developing tank 4' and the negative developing tank 5' are connected to one end of the connecting pipe 3' away from the developing nozzle 2' through the corresponding supply pipe 6', and the pump body 7' and the on-off valve 8' are arranged on the two supply pipes 6'.

[0004] The prior art has the following disadvantages: the positive developing tank 4' and the negative developing tank 5' share one connecting pipe 3' connected with the developing nozzle 2', when the developing nozzle 2' needs to switch from one kind of developing liquid to another kind of developing liquid, the developing liquid remaining in the connecting pipe 3' is easy to react with the switched developing liquid, for example, when the positive developing liquid is switched to the negative developing liquid, the negative developing liquid flowing into the connecting pipe 3' will react with the positive developing liquid remaining in the connecting pipe 3', and the flocculent impurities generated by the chemical reaction are easy to contaminate the structure in the developing chamber and contaminate the liquid crystal display panel 9', affecting the production quality. UTILITY MODEL CONTENTS

[0005] The utility model aims at providing a developing liquid supply system, which has simple structure and can clean the liquid supply pipe when the developing liquid is switched, ensuring the clean environment in the liquid supply pipe.

[0006] To achieve the purpose, the utility model adopts the following technical scheme:

[0007] The application provides a developing solution supply system, which comprises a spraying assembly and a supply assembly. The spraying assembly comprises a spraying head and a liquid supply pipe. The spraying head is arranged in a developing chamber and used for spraying developing solution to a substrate to be developed. One end of the liquid supply pipe is connected with the spraying head, and the other end of the liquid supply pipe extends out of the developing chamber. The supply assembly comprises a first positive developing tank and a first negative developing tank which are arranged at intervals. The developing solution comprises positive developing solution and negative developing solution. The first positive developing tank is used for storing the positive developing solution. The first positive developing tank is connected with the other end of the liquid supply pipe through a first connecting pipe. The first negative developing tank is used for storing negative developing solution. The first negative developing tank is connected with the other end of the liquid supply pipe through a second connecting pipe. The other end of the liquid supply pipe is also connected with a third connecting pipe which is communicated with an external deionized water source. First pump bodies and first valves are arranged on the first connecting pipe, the second connecting pipe and the third connecting pipe. All the first valves are arranged adjacent to the liquid supply pipe.

[0008] As a preferred solution of the developing solution supply system, the supply assembly comprises a transfer tank and a drain pipe. The other end of the liquid supply pipe is connected with the transfer tank. The first connecting pipe, the second connecting pipe and the third connecting pipe are all connected with the transfer tank. All the first valves are arranged adjacent to the transfer tank. The drain pipe is connected with the bottom of the transfer tank, and a second valve is arranged on the drain pipe.

[0009] As a preferred solution of the developing solution supply system, the supply assembly further comprises a fourth connecting pipe and a fifth connecting pipe. The fourth connecting pipe and the fifth connecting pipe are connected with the bottom of the transfer tank at intervals. One end of the fourth connecting pipe away from the transfer tank is connected with the first positive developing tank. One end of the fifth connecting pipe away from the transfer tank is connected with the first negative developing tank. Third valves are arranged on the fourth connecting pipe and the fifth connecting pipe, and the third valves are arranged adjacent to the transfer tank.

[0010] As a preferred solution of the developing solution supply system, the supply assembly further comprises a second positive developing tank and a second negative developing tank. The second positive developing tank is connected with the transfer tank through a sixth connecting pipe. The second negative developing tank is connected with the transfer tank through a seventh connecting pipe. Second pump bodies and fourth valves are arranged on the sixth connecting pipe and the seventh connecting pipe. All the fourth valves are arranged adjacent to the transfer tank. The developing solution in the second positive developing tank and the second negative developing tank has a concentration A, and the developing solution in the first positive developing tank and the first negative developing tank has a concentration B, A>B.

[0011] As a preferred scheme of the developing solution supply system, the feeding assembly further comprises a concentration meter and a controller, the concentration meter is arranged in the transfer tank, the concentration meter is connected with the controller, and the controller is connected with all the pumps and all the valves.

[0012] As a preferred scheme of the developing solution supply system, the feeding assembly further comprises two three-way valves, one of the three-way valves is connected with the transfer tank, the first connecting pipe and the sixth connecting pipe respectively, and the other three-way valve is connected with the transfer tank, the second connecting pipe and the seventh connecting pipe respectively.

[0013] As a preferred scheme of the developing solution supply system, the developing solution supply system further comprises a stirring assembly, the stirring assembly comprises a motor, a stirring shaft and a plurality of blades, the stirring shaft is rotatably arranged in the transfer tank, the central axis of the stirring shaft extends in the vertical direction, one end of the stirring shaft is connected with the output end of the motor, the motor is arranged outside the transfer tank, and the plurality of blades are arranged on the outer periphery of the stirring shaft.

[0014] As a preferred scheme of the developing solution supply system, the stirring assembly further comprises a scraper and a connecting rod, the length of the scraper extends along the central axis of the stirring shaft, and the two ends of the scraper are connected with the stirring shaft through the connecting rod respectively, and the scraper can scrape the cavity wall of the transfer tank.

[0015] As a preferred scheme of the developing solution supply system, the developing solution supply system further comprises a temperature adjusting assembly, the temperature adjusting assembly comprises a thermometer and a heating piece, the thermometer is arranged in the transfer tank, and the heating piece is arranged on the transfer tank.

[0016] As a preferred scheme of the developing solution supply system, the heating piece comprises a temperature adjusting pipe, and the temperature adjusting pipe is wound on the outer periphery of the transfer tank.

[0017] The beneficial effects of the present application are as follows: the third connecting pipe is additionally connected to the end of the liquid supply pipe away from the spray head, when the liquid supply pipe is switched between supplying positive developing solution in the first positive developing tank and supplying negative developing solution in the first negative developing tank, the external deionized water source can clean the liquid supply pipe through the third connecting pipe, so as to ensure the cleanliness of the liquid supply pipe, thereby avoiding the chemical reaction between the positive developing solution and the negative developing solution in the liquid supply pipe, and ensuring the supply quality of the developing solution supply system. BRIEF DESCRIPTION OF DRAWINGS

[0018] The present application will be further described in detail below with reference to the drawings and embodiments.

[0019] Figure 1 It is a structural schematic view of the existing developing solution supply system.

[0020] Figure 2 is a structural schematic view of a developing liquid supply system according to an embodiment of the present application;

[0021] Figure 3 is a structural schematic view of a stirring assembly according to an embodiment of the present application;

[0022] Figure 1 in which:

[0023] 1', developing chamber; 2', developing nozzle; 3', connecting pipe; 4', positive developing tank; 5', negative developing tank; 6', supply pipe; 7', pump body; 8', on-off valve; 9', liquid crystal display panel.

[0024] Figure 2 and Figure 3 in which:

[0025] 100, developing chamber; 200, substrate;

[0026] 1, spraying assembly; 11, nozzle; 12, liquid supply pipe; 2, feeding assembly; 21, first positive developing tank; 22, first negative developing tank; 23, first connecting pipe; 24, second connecting pipe; 25, third connecting pipe; 26, first pump body; 27, first valve; 28, transfer tank; 29, blowdown pipe; 30, second valve; 31, fourth connecting pipe; 32, fifth connecting pipe; 33, third valve; 34, densitometer; 35, second positive developing tank; 36, second negative developing tank; 37, sixth connecting pipe; 38, seventh connecting pipe; 39, second pump body; 40, three-way valve; 5, stirring assembly; 51, motor; 52, stirring shaft; 53, blade; 54, scraper; 55, connecting rod; 6, adjusting assembly; 61, thermometer; 62, heating element. DETAILED DESCRIPTION

[0027] The advantages and features of the present application, as well as the method for achieving them, will become apparent from the following embodiments described in detail below with reference to the accompanying drawings. However, the present application is not limited to the embodiments disclosed below, but can be implemented in various different forms, and the present embodiments are provided only to accomplish the disclosure of the present application and to allow those skilled in the art to fully understand the scope of the present application, and the present application is limited only by the scope of the claims. The same reference numerals denote the same constituent elements throughout the specification.

[0028] Hereinafter, the present application will be described in detail with reference to the accompanying drawings.

[0029] As Figure 2 and Figure 3The utility model discloses a developing liquid supply system, including spraying assembly 1 and feed assembly 2, spraying assembly 1 includes spray head 11 and liquid supply pipe 12, and spray head 11 sets up in developing chamber 100 and is used for spraying developing liquid to the substrate 200 of being developed, and one end of liquid supply pipe 12 is connected with spray head 11, and the other end of liquid supply pipe 12 extends to the outside of developing chamber 100, feed assembly 2 includes the first positive developing tank 21 and the first negative developing tank 22 of interval arrangement, and developing liquid includes positive developing liquid and negative developing liquid, and the first positive developing tank 21 has stored positive developing liquid, and the first positive developing tank is connected with the one end of liquid supply pipe 12 away from spray head 11 through first connecting pipe 23, and the first negative developing tank 22 has stored negative developing liquid, and the first negative developing tank 22 is connected with the one end of liquid supply pipe 12 away from spray head 11 through second connecting pipe 24, and the one end of liquid supply pipe 12 away from spray head 11 is also connected with third connecting pipe 25, and third connecting pipe 25 communicates with external deionized water source, and all first valve 27es are all set up close to liquid supply pipe 12.

[0030] It can be understood that by the additional connection of third connecting pipe 25 at the one end of liquid supply pipe 12 away from spray head 11, when liquid supply pipe 12 switches between supplying positive developing liquid from first positive developing tank 21 and supplying negative developing liquid from first negative developing tank 22, external deionized water source can clean liquid supply pipe 12 through third connecting pipe 25 to ensure the cleanliness of liquid supply pipe 12, thereby avoiding the chemical reaction of positive developing liquid and negative developing liquid in liquid supply pipe 12 and ensuring the supply quality of developing liquid supply system.

[0031] For example, after the operation of positive developing liquid is completed, the first pump body 26 and the first valve 27 on the first connecting pipe 23 and the second connecting pipe 24 are closed, the first pump body 26 and the first valve 27 on the third connecting pipe 25 are opened, so that the external deionized water source can clean liquid supply pipe 12 through the third connecting pipe 25, thereby removing the positive developing liquid in liquid supply pipe 12, and the positive developing liquid discharged into developing chamber 100 by the deionized water in liquid supply pipe 12 is recycled through the developing liquid circulating treatment system of developing chamber 100, and then the first pump body 26 and the first valve 27 on the first connecting pipe 23 and the third connecting pipe 25 are closed, the second pump body 39 and the second valve 30 on the second connecting pipe 24 are opened, so as to extract the negative developing liquid in the negative developing tank to the developing spray head 11, thereby realizing the switching of positive developing liquid and negative developing liquid. Of course, in order to ensure the liquid supply efficiency of liquid supply pipe 12, the first pump body 26 can also be arranged on liquid supply pipe 12 for extraction operation.

[0032] Further, as shown in the drawings, Figure 2As shown, the feeding assembly 2 comprises a transfer tank 28 and a drain pipe 29, the liquid supply pipe 12 is connected to the transfer tank 28 at an end away from the spray head 11, the first connecting pipe 23, the second connecting pipe 24 and the third connecting pipe 25 are all connected to the transfer tank 28, all the first valves 27 are arranged adjacent to the transfer tank 28, the drain pipe 29 is connected to the bottom of the transfer tank 28, and the second valve 30 is arranged on the drain pipe 29. The arrangement of the transfer tank 28 facilitates providing sufficient space for the connection of the liquid supply pipe 12, the first connecting pipe 23, the second connecting pipe 24 and the third connecting pipe 25, and can provide space for buffering when the positive developing solution, the negative developing solution and the deionized water are input, so as to avoid that the positive developing solution and the negative developing solution are directly delivered to the spray head 11 in the form of developing solution with bubbles in the pipeline under the pumping of the first pump body 26, thereby affecting the spraying quality and ensuring the delivery quality of the developing solution.

[0033] In addition, the arrangement of the drain pipe 29 can facilitate timely drain treatment when the developing solution is switched for cleaning, so as to avoid that the developing solution or the deionized water for cleaning is left in the liquid supply pipe 12, effectively ensure the cleanliness of the liquid supply pipe 12 when the developing solution is switched, and effectively avoid that the deionized water affects the concentration of the developing solution after switching. Of course, without considering the influence of bubbles, the transfer tank 28 can be provided with a five-way valve, and the five-way valve is connected to the liquid supply pipe 12, the first connecting pipe 23, the second connecting pipe 24, the third connecting pipe 25 and the drain pipe 29, respectively. The five-way valve has a small structure and can be a market standard part, thereby effectively saving the production cost and the occupied space of the overall developing solution supply system.

[0034] Further, as shown, Figure 2 The feeding assembly 2 further comprises a fourth connecting pipe 31 and a fifth connecting pipe 32, the fourth connecting pipe 31 and the fifth connecting pipe 32 are connected to the bottom of the transfer tank 28 at intervals, the fourth connecting pipe 31 is connected to the first positive developing tank 21 at an end away from the transfer tank 28, the fifth connecting pipe 32 is connected to the first negative developing tank 22 at an end away from the transfer tank 28, the third valve 33 is arranged on the fourth connecting pipe 31 and the fifth connecting pipe 32, and the third valve 33 is arranged adjacent to the transfer tank 28. When the positive developing solution needs to be switched to the negative developing solution, the positive developing solution in the transfer tank 28 and the liquid supply pipe 12 is recovered to the first positive developing tank 21 through the fourth connecting pipe 31; when the negative developing solution needs to be switched to the positive developing solution, the negative developing solution in the transfer tank 28 and the liquid supply pipe 12 is recovered to the first negative developing tank 22 through the fifth connecting pipe 32, thereby reducing the waste of the developing solution and effectively ensuring the economic benefit of the developing solution supply system.

[0035] In some embodiments, the feeding assembly 2 further comprises a concentration meter 34 arranged in the transfer tank 28, and a controller connected with the concentration meter 34 and all the first pump bodies 26 and all the valves. The concentration of the developer in the transfer tank 28 is detected by the concentration meter 34, and if the concentration of the developer in the transfer tank 28 is too high, deionized water is added into the transfer tank 28 by starting the first pump body 26 and the first valve 27 on the third connecting pipe 25 to dilute the concentration of the developer in the transfer tank 28, so as to effectively ensure the concentration accuracy of the developer spraying and further ensure the developing effect.

[0036] Further, as shown in Figure 2 the feeding assembly 2 further comprises a second positive developing tank 35 and a second negative developing tank 36, the second positive developing tank 35 is connected with the transfer tank 28 through a sixth connecting pipe 37, the second negative developing tank 36 is connected with the transfer tank 28 through a seventh connecting pipe 38, the sixth connecting pipe 37 and the seventh connecting pipe 38 are both provided with a second pump body 39 and a fourth valve, and all the fourth valves are arranged adjacent to the transfer tank 28, the concentration of the developer in the second positive developing tank 35 and the second negative developing tank 36 is A, the concentration of the developer in the first positive developing tank 21 and the first negative developing tank 22 is B, and A > B. It is conceivable that when the developer is switched, the transfer tank 28 is cleaned by deionized water, and the residual deionized water in the transfer tank 28 may affect the concentration of the developer after switching. If the concentration of the positive developer in the transfer tank 28 detected by the concentration meter 34 is low when the positive developer is used, the second pump body 39 and the fourth valve on the sixth connecting pipe 37 are started to supplement the high-concentration positive developer in the second positive developing tank 35 into the transfer tank 28; if the concentration of the negative developer in the transfer tank 28 detected by the concentration meter 34 is low when the negative developer is used, the second pump body 39 and the fourth valve on the seventh connecting pipe 38 are started to supplement the high-concentration negative developer in the second negative developing tank 36 into the transfer tank 28, so as to effectively ensure the concentration accuracy of the developer in the transfer tank 28.

[0037] Optionally, the feeding assembly 2 further comprises two three-way valves 40, one three-way valve 40 is connected with the transfer tank 28, the first connecting pipe 23 and the sixth connecting pipe 37, and the other three-way valve 40 is connected with the transfer tank 28, the second connecting pipe 24 and the seventh connecting pipe 38. By arranging the three-way valves 40, the interfaces of the first connecting pipe 23 and the sixth connecting pipe 37 on the transfer tank 28 can be reduced, and the interfaces of the second connecting pipe 24 and the seventh connecting pipe 38 on the transfer tank 28 can be reduced. The reduction of the interfaces on the transfer tank 28 effectively ensures the structural strength of the transfer tank 28 and improves the service life of the transfer tank 28.

[0038] Further, as shown in Figure 3As shown, the developer supply system further comprises a stirring assembly 5, the stirring assembly 5 comprising a motor 51, a stirring shaft 52 and a plurality of blades 53, the motor 51 being arranged at the bottom of the transfer tank 28, the stirring shaft 52 being rotatably connected to the transfer tank 28, and the central axis of the stirring shaft 52 extending in the vertical direction, one end of the stirring shaft 52 being connected to the output end of the motor 51, and the other end of the stirring shaft 52 extending into the transfer tank 28, and the plurality of blades 53 being arranged around the outer periphery of the stirring shaft 52 in the transfer tank 28. When diluting or concentrating the developer in the transfer tank 28, the motor 51 drives the stirring shaft 52 to rotate the blades 53 on the stirring shaft 52, so that the mixing of the developer in the transfer tank 28 is more uniform, and the mixing quality of the developer is ensured.

[0039] Preferably, the stirring assembly 5 further comprises a scraper 54 and a connecting rod 55, the length of the scraper 54 extending along the central axis of the stirring shaft 52, and the two ends of the scraper 54 being connected to the stirring shaft 52 through the connecting rod 55, and the scraper 54 being capable of scraping the cavity wall of the transfer tank 28. The transfer tank 28 is a transfer cylinder, and the motor 51 drives the stirring shaft 52 to rotate the connecting rod 55 to drive the scraper 54 to rotate, so that the scraper 54 scrapes the inner cavity wall of the transfer tank 28, and the cleanliness of the inner cavity wall of the transfer tank 28 is improved.

[0040] In other embodiments, as shown in Figure 2 and Figure 3 As shown, the developer supply system further comprises a temperature adjusting assembly 6, the temperature adjusting assembly 6 comprising a thermometer 61 and a heating element 62, the thermometer 61 being arranged in the transfer tank 28, and the heating element 62 being arranged on the transfer tank 28. The suitable temperature of the developer is about 23.5°, therefore, the temperature of the developer in the transfer tank 28 is monitored in real time by the thermometer 61, and the temperature of the transfer tank 28 is adjusted by the heating element 62, so that the temperature accuracy of the developer in the transfer tank 28 is ensured, the activity of the developer is effectively ensured, and the development rate is not affected by the too low temperature of the developer.

[0041] Optionally, the heating element 62 comprises a temperature regulating pipe, the temperature regulating pipe being wound around the outer periphery of the transfer tank 28, the temperature regulating pipe being simple in structure and convenient to install, and when adjusting the temperature, cooling water or hot water is circulated in the temperature regulating pipe by an external circulating device to realize heat exchange between the temperature regulating pipe and the transfer tank 28, so that the temperature of the developer in the transfer tank 28 is adjusted.

[0042] Although the embodiments of the present application have been described above with reference to the drawings, the present application is not limited to the above embodiments, but can be manufactured in various forms, and those skilled in the art will understand that the present application can be implemented in other specific forms without changing the technical spirit or basic characteristics of the present application. Therefore, it should be understood that the above embodiments are exemplary in all aspects and are not limiting.

Claims

1. A developer supply system, characterized in that: include: a spray assembly, the spray assembly comprising a spray head and a liquid supply pipe, the spray head being disposed in the developing chamber and configured to spray a developing liquid onto a substrate to be developed, one end of the liquid supply pipe being connected to the spray head, and the other end of the liquid supply pipe extending out of the developing chamber; A feeding assembly, wherein the feeding assembly includes a first positive developing tank and a first negative developing tank arranged at intervals, the developing liquid includes a positive developing liquid and a negative developing liquid, the positive developing liquid is stored in the first positive developing tank, the positive developing tank is connected to the end of the liquid supply pipe away from the nozzle through a first connecting pipe, the first negative developing tank stores a negative developing liquid, the second connecting pipe of the first negative developing tank is connected to the end of the liquid supply pipe away from the nozzle, the end of the liquid supply pipe away from the nozzle is also connected to a third connecting pipe, the third connecting pipe is communicated with an external deionized water source, the first connecting pipe, the second connecting pipe and the third connecting pipe are all provided with a first pump body and a first valve, and all the first valves are arranged adjacent to the liquid supply pipe.

2. The developer supply system according to claim 1, wherein: The feeding assembly includes a transfer tank and a drain pipe, the end of the liquid supply pipe away from the nozzle is connected to the transfer tank, the first connecting pipe, the second connecting pipe and the third connecting pipe are all connected to the transfer tank, all of the first valves are arranged adjacent to the transfer tank, the drain pipe is connected to the bottom of the transfer tank, and a second valve is arranged on the drain pipe.

3. The developer supply system according to claim 2, wherein: The feeding assembly also includes a fourth connecting pipe and a fifth connecting pipe, the fourth connecting pipe and the fifth connecting pipe are connected to the bottom of the transfer tank at intervals, the end of the fourth connecting pipe away from the transfer tank is connected to the first positive developing tank, and the end of the fifth connecting pipe away from the transfer tank is connected to the first negative developing tank, and a third valve is provided on both the fourth connecting pipe and the fifth connecting pipe, and the third valve is provided adjacent to the transfer tank.

4. The developer supply system according to claim 2, wherein: The feeding assembly also includes a second positive developing tank and a second negative developing tank, the second positive developing tank is connected to the transfer tank through a sixth connecting pipe, and the second negative developing tank is connected to the transfer tank through a seventh connecting pipe, the sixth connecting pipe and the seventh connecting pipe are both provided with a second pump body and a fourth valve, and all the fourth valves are provided adjacent to the transfer tank, the developer concentration in the second positive developing tank and the second negative developing tank is A, the developer concentration in the first positive developing tank and the first negative developing tank is B, and A>B.

5. The developer supply system according to claim 4, wherein: The feeding assembly further includes a concentration meter and a controller. The concentration meter is arranged in the transfer tank. The concentration meter is connected to the controller, and the controller is connected to all pump bodies and all valves.

6. The developer supply system according to claim 4, wherein: The feeding assembly also includes two three-way valves, one of which is connected to the transfer tank, the first connecting pipe and the sixth connecting pipe respectively, and the other of which is connected to the transfer tank, the second connecting pipe and the seventh connecting pipe respectively.

7. The developer supply system according to any one of claims 2 to 6, characterized in that: The developer supply system also includes a stirring assembly, which includes a motor, a stirring shaft and multiple blades. The stirring shaft is rotatably arranged in the transfer tank, and the central axis of the stirring shaft extends in the vertical direction. One end of the stirring shaft is connected to the output end of the motor. The motor is arranged outside the transfer tank, and the multiple blades are arranged around the outer circumference of the stirring shaft.

8. The developer supply system according to claim 7, wherein: The stirring assembly also includes a scraper and a connecting rod. The length of the scraper extends along the central axis of the stirring shaft, and both ends of the scraper are connected to the stirring shaft through the connecting rod respectively. The scraper can scrape the cavity wall of the transfer tank.

9. The developer supply system according to any one of claims 2 to 6, characterized in that: The developer supply system further includes a temperature regulating component, which includes a thermometer and a heating element. The thermometer is disposed in the transfer tank, and the heating element is disposed on the transfer tank.

10. The developer supply system according to claim 9, wherein: The heating element includes a temperature regulating tube, and the temperature regulating tube is wound around the outer circumference of the transfer tank.

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