Control chip, control method, storage medium and program product

Abstract

The control chip, the control method, the storage medium and the program product provided by the embodiment of the application, the control chip is electrically connected with a fixing device, and comprises a fixing control module and a main control module, wherein the main control module is configured to read a current job type; the fixing control module comprises a first protection circuit, a second protection circuit and an execution circuit; when a received temperature detection signal is greater than or equal to a first preset value, the first protection circuit sends a first front signal to the execution circuit; the second protection circuit is configured to send a second front signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; and the execution circuit is configured to perform protection control on the fixing device when the first front signal is received and the current job type is a first job type, or the execution circuit is further configured to perform protection control on the fixing device when the second front signal is received. The application enables the printer to work within a safe temperature range through a double control strategy, and reduces the time of control signal transmission.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of fixing over-temperature protection, and in particular to a control chip, a control method, a storage medium and a program product. BACKGROUND

[0002] The fixing process of a laser printer is to fix the carbon powder image formed on the printing paper on the paper by heating and pressing. This process is mainly completed by a fixing device, which is usually composed of a heating roller and a pressing roller. Through the heating and pressing action of the two rollers, the carbon powder is melted and immersed into the paper, thereby forming a permanent image on the paper. Among them, the main component of the carbon powder is resin. In order to melt the carbon powder, the fixing heating temperature needs to reach above 150°C. However, when the fixing heating function is abnormal, for example, continuous heating or the heating temperature exceeds a certain value, the printing paper may be burned, thereby causing a safety accident.

[0003] Therefore, it is necessary to set a protection circuit in the fixing device to avoid temperature abnormalities. The traditional fixing over-temperature protection control is to compare the collected fixing device temperature value with the over-temperature protection threshold value through an ADC module. When the fixing device temperature exceeds the over-temperature protection threshold value for more than the filtering time, the fixing device is turned off and the heating is stopped.

[0004] In the process of conceiving and implementing the present application, the inventors found that at least the following problems exist: the protection measures of the fixing device in the existing scheme are too single, and the over-temperature response speed is slow. SUMMARY

[0005] The control chip, the control method, the storage medium and the program product provided by the embodiments of the present application are used to solve the problems of single protection measures and slow response speed of the fixing device.

[0006] In a first aspect, the embodiments of the present application provide a control chip electrically connected with a fixing device, comprising: a fixing control module, a main control module, wherein:

[0007] The main control module is configured to read a current job type;

[0008] The fixing control module comprises a first protection circuit, a second protection circuit and an execution circuit;

[0009] The first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value;

[0010] The second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value;

[0011] The execution circuit is configured to execute the protection control on the fuser when the first pre-signal is received and the current job type is the first job type; and the execution circuit is further configured to execute the protection control on the fuser when the second pre-signal is received.

[0012] When the master control module reads the second pre-signal, the master control module delivers an imaging stop signal to the imaging module to control the imaging module to stop imaging.

[0013] In one of the embodiments, the fusing control module further comprises a third protection circuit configured to send a third pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a third preset value.

[0014] The execution circuit is configured to execute the protection control on the fuser when the third pre-signal is received.

[0015] In one of the embodiments, the execution circuit is a logic gate circuit.

[0016] In one of the embodiments, the master control module is configured to determine the current job type according to a paper type specified when the job is issued.

[0017] In one of the embodiments, the control chip further comprises a bus, and the fusing control module comprises a register circuit.

[0018] The second protection circuit is configured to register the second pre-signal to the register circuit when the received temperature detection signal is greater than the second preset value, and the master control module delivers an imaging stop signal to the imaging module to control the imaging module to stop imaging after the master control module reads the second pre-signal through the bus.

[0019] In a second aspect, the embodiments of the present application further provide a control method, which comprises:

[0020] receiving a temperature detection signal;

[0021] if the temperature detection signal is greater than or equal to a first preset value, sending a first pre-signal to an execution circuit, and the first pre-signal is used to control the execution circuit to execute a protection control on a fuser;

[0022] if the temperature detection signal is greater than or equal to a second preset value, sending a second pre-signal to the execution circuit, and the second pre-signal is used to control the execution circuit to execute the protection control on the fuser.

[0023] In one of the embodiments, if the temperature detection signal is greater than or equal to the first preset value, the first pre-signal is sent to the execution circuit; and the method specifically comprises:

[0024] the duration that the temperature detection signal is greater than or equal to the first preset value is a first duration;

[0025] If the first duration is greater than or equal to the first preset time, a first precondition signal is sent to the execution circuit, wherein the first preset time is associated with the current job type.

[0026] In one of the embodiments, the method further comprises:

[0027] If the temperature detection signal is greater than or equal to the third preset value, a duration during which the temperature detection signal is greater than or equal to the third preset value is obtained as the second duration.

[0028] If the second duration is greater than or equal to the second preset time, a third precondition signal is sent to the execution circuit; the third precondition signal is used to control the execution circuit to perform the protection control on the fuser.

[0029] In a third aspect, the embodiments of the present application further provide a computer readable storage medium, the computer readable storage medium storing computer execution instructions, the computer execution instructions being executed by a processor to implement the control method according to any of the above.

[0030] In a fourth aspect, the embodiments of the present application further provide a computer program product, comprising a computer program, the computer program being executed by a processor to implement the control method according to any of the above.

[0031] The control chip, the control method, the storage medium and the program product provided by the embodiments of the present application, the control chip is electrically connected with the fuser, comprising: a fusing control module, a main control module, wherein: the main control module is configured to read a current job type; the fusing control module comprises: a first protection circuit, a second protection circuit and an execution circuit; the first protection circuit is configured to send a first precondition signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value; the second protection circuit is configured to send a second precondition signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value; the second preset value is greater than the first preset value; the execution circuit is configured to perform protection control on the fuser when the first precondition signal is received and the current job type is a first job type; the execution circuit is further configured to perform protection control on the fuser when the second precondition signal is received; the main control module reads the second precondition signal, and transmits an imaging stop signal to an imaging module to control the imaging module to stop imaging. The fuser is protected by the first protection circuit and the second protection circuit, so that the printer can work in a safe temperature range; secondly, the protection circuit is built into the chip, the response is fast, the time of control signal transmission is reduced, and the control chip can control the imaging module to stop imaging in time. BRIEF DESCRIPTION OF DRAWINGS

[0032] The accompanying drawings, which are incorporated herein and form part of the specification, illustrate embodiments consistent with the present application and, together with the description, further serve to explain the principles of the application.

[0033] Figure 1 A structure diagram of a control chip according to an embodiment of the present application is provided.

[0034] Figure 2 A structure diagram of a control chip according to an embodiment of the present application is provided.

[0035] Figure 3 A flow chart of a control method according to an embodiment of the present application is provided.

[0036] Figure 4 A flow chart of a control method according to an embodiment of the present application is provided.

[0037] Figure 5 A flow chart of a control method according to an embodiment of the present application is provided.

[0038] Figure 6 A flow chart of a control method according to another embodiment of the present application is provided.

[0039] Figure 7 A structure diagram of a control chip according to the present application is provided.

[0040] The specific embodiments of the present application have been shown through the above-described drawings, and will be described in more detail hereinafter. The drawings and the written description are not intended to restrict the scope of the present application by any means, but to illustrate the concept of the present application to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0041] The exemplary embodiments will be described in detail hereinbelow with reference to the drawings. In the following description, the same drawings refer to the same or similar elements unless otherwise indicated. The embodiments described in the following exemplary embodiments are not meant to represent all embodiments consistent with the present application. Rather, they are merely examples of apparatuses and methods consistent with some aspects of the present application as detailed in the appended claims.

[0042] The fixing process of a laser printer is to fix the carbon powder image formed on the printing paper on the paper by heating and pressing. This process is mainly completed by a fixing device, which is usually composed of a heating roller and a pressing roller. The carbon powder is melted and immersed into the paper by the heating and pressing of the two rollers, so as to form a permanent image on the paper. The main component of the carbon powder is resin. In order to melt the carbon powder, the fixing heating temperature needs to reach 150℃ or above. However, when the fixing heating function is abnormal, for example, continuous heating or heating temperature exceeding a certain value occurs, the heating roller and the pressing roller may be stuck together, and the printing paper may even be burned, which may cause a safety accident.

[0043] Therefore, it is necessary to set a protection circuit in the fuser to avoid temperature abnormalities. The traditional over-temperature protection control of the fuser is to compare the collected fuser temperature value with the over-temperature protection threshold value through an ADC module, and only when the fuser temperature exceeds the over-temperature protection threshold value for more than the filtering time, the fuser is turned off to stop heating.

[0044] In combination with the above scenarios, it can be seen that in the prior art, there is a technical problem that the protection measures of the fuser are too single and the over-temperature response speed is slow.

[0045] The control chip provided by the embodiment of the present application is electrically connected with the fuser and includes a fusing control module and a main control module. The main control module is configured to read a current job type. The fusing control module includes a first protection circuit, a second protection circuit and an execution circuit. The first protection circuit is configured to send a first pre-signal to the execution circuit when a received temperature detection signal is greater than or equal to a first preset value. The second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value. The second preset value is greater than the first preset value. The execution circuit is configured to perform protection control on the fuser when the first pre-signal is received and the current job type is a first job type. The execution circuit is also configured to perform protection control on the fuser when the second pre-signal is received. The main control module reads the second pre-signal and transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. The fuser is protected by the first protection circuit and the second protection circuit, so that the printer can work within a safe temperature range. Secondly, the protection circuit is built into the chip, the response is fast, the time of control signal transmission is reduced, and the control chip can control the imaging module to stop imaging in time.

[0046] The technical solutions of the present application and how the technical solutions of the present application solve the above technical problems will be described in detail in specific embodiments. The following specific embodiments can be combined with each other, and the same or similar concepts or processes can not be described again in some embodiments. The embodiments of the present application will be described below with reference to the drawings.

[0047] As Figure 1 shown, Figure 1This is a schematic diagram of the structure of a control chip provided in an embodiment of this application. The control chip is electrically connected to the fuser and includes a fuser control module and a main control module. The main control module is configured to read the current job type. The fuser control module includes a first protection circuit, a second protection circuit, and an execution circuit. The first protection circuit is configured to send a first pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a first preset value. The second protection circuit is configured to send a second pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a second preset value. The second preset value is greater than the first preset value. The execution circuit is configured to perform protection control on the fuser when it receives the first pre-signal and the current job type is the first job type. The execution circuit is also configured to perform protection control on the fuser when it receives the second pre-signal. When the main control module reads the second pre-signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging.

[0048] Specifically, the temperature detection signal is used to determine the temperature of the fuser. The execution circuit is configured to perform protective control on the fuser when it receives a first pre-signal and the current job type is the first job type; it is also configured to perform protective control on the fuser when it receives a second pre-signal. When the main control module reads the second pre-signal, it transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging. Through the above embodiments, the present invention can flexibly control the temperature according to the temperature of the fuser and the current job type, thereby effectively preventing the fuser from overheating and protecting the safe operation of the equipment. By protecting the fuser through the first and second protection circuits, the printer can operate within a safe temperature range; secondly, by embedding the protection circuit into the chip, the response is fast, reducing the control signal transmission time and facilitating the control chip to promptly control the imaging module to stop imaging.

[0049] Optionally, this application can detect the temperature detection signal of the fuser using a temperature sensor and send the temperature detection signal to the fuser control module. In this embodiment, the temperature sensor is located outside the control chip and installed inside or near the fuser for real-time temperature detection.

[0050] In one embodiment, such as Figure 2 As shown, Figure 2 This is a schematic diagram of the structure of a control chip provided in one embodiment of this application. The fixing control module also includes a third protection circuit, which is configured to send a third pre-signal to the execution circuit when the received temperature detection signal is greater than or equal to a third preset value.

[0051] The execution circuit is configured to perform protective control of the fuser upon receiving a third preamplifier signal.

[0052] Specifically, when the temperature of the fuser is greater than or equal to the third preset value, the third protection circuit sends a third precondition signal to the execution circuit, and the execution circuit controls the fuser to be closed when receiving the third precondition signal, thereby stopping the printing work of the printer.

[0053] Optionally, the third protection circuit is an ADC over-temperature protection circuit, and the third preset value is less than the first preset value and the second preset value. The first preset value, the second preset value and the third preset value can be determined according to actual conditions.

[0054] In one of the embodiments, the control chip further comprises a bus, and the fusing control module comprises a register circuit; the second protection circuit is configured to register a second precondition signal to the register circuit when the received temperature detection signal is higher than the second preset value, and the host control module delivers an imaging stop signal to the imaging module to control the imaging module to stop imaging after reading the second precondition signal through the bus.

[0055] In one of the embodiments, referring to Figure 2 , the control chip further comprises a first firmware and a second firmware, wherein the first firmware is used to store the first preset value and the third preset value or set an open fusing protection value. The first protection circuit and the third protection circuit determine whether to start protection according to the first preset value and the third preset value stored in the first firmware when receiving the temperature detection signal. If the first protection circuit is configured to send a first precondition signal to the execution circuit when the received temperature detection signal is greater than or equal to the first preset value and start protection, and if the third protection circuit is configured to send a third precondition signal to the execution circuit when the received temperature detection signal is greater than or equal to the third preset value and start protection.

[0056] The register circuit is the second firmware in the figure. If the second protection circuit directly controls the fuser to be closed when detecting that the temperature detection signal is higher than the second preset value, the second protection circuit registers a second precondition signal to the second firmware at the same time. The host control module delivers an imaging stop signal to the imaging module to control the imaging module to stop imaging after reading the second precondition signal through the bus. This avoids the problem that the imaging module continues to execute the imaging process to output a carbon powder image with insufficient fusing after the fuser stops working, thereby causing the image quality to be poor.

[0057] In one of the embodiments, the execution circuit is a logic gate circuit.

[0058] Specifically, the logic gate circuit is a switch or a relay, which controls the fuser to stop working by disconnecting the switch of the loop where the fuser is located or disconnecting the power supply loop of the fuser.

[0059] In one of the embodiments, the host control module is configured to determine the current job type according to the paper type specified when the job is issued.

[0060] Optionally, if the current job type indicates that the job needs to be heated to a higher temperature, the execution circuit does not start the protection control of the fuser. The paper type affects the heating temperature of the fuser, and if the heating temperature is not enough, the toner cannot be fully fixed, which will cause imaging quality problems. The paper type includes the thickness of the paper and the size of the paper, which will affect the heating temperature of the fuser. Therefore, the first preset value is associated with the current job type or the paper type, and the first preset value can be adjusted according to the current job type or the paper type.

[0061] The application can determine whether to start the protection control of the fuser according to the current job type or the paper type, which can avoid the control chip triggering the protection when the toner is not fully fixed during the fusing of thick paper or large-size paper.

[0062] In a second aspect, the embodiments of the application also provide a control method, which is applied to the control chip described above, as shown in Figure 3 , the flow chart of the control method provided by an embodiment of the application is shown. The method includes the following steps: Figure 3 The method includes the following steps:

[0063] Step S302, receiving a temperature detection signal.

[0064] Specifically, the temperature sensor is installed inside or near the fuser to detect the temperature of the fuser in real time. The temperature sensor generates a temperature detection signal reflecting the current temperature information of the fuser. The control chip receives the temperature detection signal sent by the temperature sensor, and determines whether the temperature of the fuser is within a preset range according to the temperature detection signal, and performs a corresponding temperature adjustment mechanism. If the temperature of the fuser exceeds the preset range, the control chip will trigger the corresponding temperature adjustment mechanism to achieve precise control and avoid the fuser temperature being too high to cause paper burning.

[0065] Step S304, if the temperature detection signal is greater than or equal to the first preset value, a first pre-signal is sent to the execution circuit; the first pre-signal is used to control the execution circuit to perform the protection control of the fuser.

[0066] Specifically, the first protection circuit sends the first pre-signal to the execution circuit when the temperature detection signal is greater than or equal to the first preset value, and the execution circuit is configured to perform the protection control of the fuser, i.e., to control the fuser to be turned off, only when the first pre-signal is received and the current job type is the first job type.

[0067] Step S306, if the temperature detection signal is greater than or equal to the second preset value, a second pre-signal is sent to the execution circuit, and the second pre-signal is used to control the execution circuit to perform the protection control of the fuser.

[0068] Specifically, the second preset value is set as an upper limit of a safe temperature of the fuser. When the temperature detection signal is greater than or equal to the second preset value, a waiting time is not set, a second pre-signal is directly sent to the execution circuit by the second protection circuit, the execution circuit is controlled to stop the fuser from working, and the second pre-signal is stored in the second firmware. After the second pre-signal is read by the master control module through the bus, an imaging stop signal is transmitted to the imaging module to control the imaging module to stop imaging. The problem that the imaging module continues to perform the imaging process to output a carbon powder image with insufficient fixing after the fuser stops working, thereby causing poor image quality, is avoided.

[0069] The application sets a double protection mechanism by using the first protection circuit and the second protection circuit. The response speed of the second protection circuit is greater than that of the first protection circuit. When the fuser overheats is detected, the fuser and the imaging module are timely turned off, the printer is prevented from continuously working without the fuser heating, the image is prevented from being unclear due to the fact that the toner cannot be fused on the paper, and the toner is prevented from being polluted.

[0070] In one of the embodiments, the step S304 specifically includes the following steps, as shown in Figure 4 Figure 4 The control method flow chart provided by the embodiment of the application is as follows:

[0071] In step S402, the duration that the temperature detection signal is greater than or equal to the first preset value is the first duration.

[0072] In step S404, if the first duration is greater than or equal to the first preset time, a first pre-signal is sent to the execution circuit, wherein the first preset time is associated with the current job type.

[0073] Optionally, the first preset time is set according to the filtering time of the temperature detection signal and the current job type (paper type). Because the thickness and size of the paper can affect the heating temperature of the fuser, the first preset time can be set according to the current job type. If the paper is too thick or the size is large, the first preset time can be appropriately increased. The first preset time is set according to specific conditions to avoid the fuser from being unexpectedly turned off to affect the printing job due to the current job type.

[0074] Specifically, the traditional fusing over-temperature protection control is to compare the collected fuser temperature value with an over-temperature protection threshold value by the ADC module. When the over-temperature state time exceeds the over-temperature signal filtering time, the fuser is turned off and the heating is stopped. This way is single and the over-temperature response speed is slow. The embodiment of the application adds the control strategy of the first protection circuit on the basis of the ADC over-temperature control, can more accurately control the temperature of the fuser, and avoids the fuser from being turned off due to false measurement.

[0075] In one of the embodiments, the method further includes the following steps, as shown in​Figure 5 As shown, Figure 5 A control method flow chart is provided for an embodiment of the present application, and the method comprises the following steps:

[0076] In step S502, if the temperature detection signal is greater than or equal to the third preset value, a duration that the temperature detection signal is greater than or equal to the third preset value is obtained as a second duration.

[0077] In step S504, if the second duration is greater than or equal to a second preset time, a third precondition signal is sent to the execution circuit; the third precondition signal is used to control the execution circuit to perform the protection control on the fuser.

[0078] Optionally, the second preset time is set according to a filtering time of the temperature detection signal and a current job type setting (paper type), because the thickness and size of the paper can affect the heating temperature of the fuser, the second preset time can be set according to the current job type setting, and if the paper is too thick or the size is too large, the second preset time can be appropriately increased. The second preset time is set according to specific conditions to avoid the fuser from being unexpectedly turned off to affect the printing job due to the current job type.

[0079] The present application provides a control method, which is applied to the control chip as described above, such as Figure 6 As shown, Figure 6 A control method flow chart is provided for another embodiment of the present application, and the method comprises the following steps:

[0080] When the fuser starts to work, the protection process of the first protection circuit is that the first firmware controls a first over-temperature detection function switch, if the detection function is turned on, the control chip inside starts the first over-temperature detection, when it is detected that the output level of the first protection circuit is low, that is, the temperature detection signal is greater than or equal to the first preset value, it is assumed that the first over-temperature detection is triggered, the output level of the first protection circuit is configured as low, and the duration that the temperature detection signal is greater than or equal to the first preset value is a first duration t1, if the first duration t1 is greater than or equal to a first preset time t3, that is, t1≥t3 and the first firmware turns on the execution function of the execution circuit, the execution circuit controls the fuser to be turned off, without turning off the fuser heating through the firmware.

[0081] The protection process of the second protection circuit is that the control chip inside directly performs the second over-temperature detection, when the trigger level of the second protection circuit is high, that is, the temperature detection signal is higher than the second preset value, the control chip immediately directly turns off the fuser heating, without waiting for a debounce time, and meanwhile, the firmware is informed that the fuser is turned off. The second preset value is greater than the first preset value.

[0082] The protection process of the third protection circuit is as follows: the first firmware controls the third over-temperature detection function switch, if the detection function is turned on, the control chip internally starts the third over-temperature detection, when the temperature detection signal is greater than or equal to the third preset value, and the duration of the temperature detection signal being greater than or equal to the third preset value is the second duration t2, if the second duration t2 is greater than or equal to the second preset time t4, that is, t2>t4, and the first firmware turns on the execution function of the execution circuit, the execution circuit controls the fuser to be turned off, and the fuser heating is not performed by the firmware.

[0083] The embodiment of the present application further provides a computer readable storage medium, and the computer readable storage medium stores computer execution instructions, and the computer execution instructions are used for realizing the control method.

[0084] The embodiment of the present application further provides a computer program product, and the computer program product comprises a computer program, and the computer program is executed by a processor to realize the control method.

[0085] Figure 7 The structure of the control chip provided by the present application is shown in the figure. Figure 7 As shown in the figure, the control chip 50 provided by the embodiment comprises at least one processor 501 and a memory 502. Optionally, the device 50 further comprises a communication component 503. The processor 501, the memory 502 and the communication component 503 are connected through a bus 504.

[0086] In the specific implementation process, the at least one processor 501 executes the computer execution instructions stored in the memory 502, so that the at least one processor 501 executes the method.

[0087] The specific implementation process of the processor 501 can refer to the method embodiment, and the implementation principle and technical effects are similar, and the embodiment will not be described here.

[0088] In the above embodiment, it should be understood that the processor can be a central processing unit (English: Central Processing Unit, for short: CPU), and can also be other general-purpose processors, digital signal processors (English: Digital Signal Processor, for short: DSP), application specific integrated circuits (English: Application Specific Integrated Circuit, for short: ASIC) and the like. The general-purpose processor can be a microprocessor, or the processor can be any conventional processor. The steps of the disclosed method can be directly embodied as hardware processor execution, or executed by hardware and software modules in the processor.

[0089] The memory can include a Random Access Memory (RAM) and can also include a Non-volatile Memory (NVM), such as at least one disk memory.

[0090] The bus can be an Industry Standard Architecture (ISA) bus, a Peripheral Component (PCI) bus, or an Extended Industry Standard Architecture (EISA) bus, etc. The bus can be divided into an address bus, a data bus, a control bus, etc. For ease of representation, the bus in the drawings of the present application does not limit to only one bus or one type of bus.

[0091] The present application also provides a computer program product, comprising a computer program, which, when executed by a processor, implements the above method.

[0092] The present application also provides a computer readable storage medium, which stores computer execution instructions, and when a processor executes the computer execution instructions, the above method is implemented.

[0093] The above readable storage medium can be implemented by any type of volatile or non-volatile storage device or a combination thereof, such as Static Random Access Memory (SRAM), Electrically Erasable Programmable Read-Only Memory (EEPROM), Erasable Programmable Read-Only Memory (EPROM), Programmable Read-Only Memory (PROM), Read-Only Memory (ROM), magnetic storage, flash memory, magnetic disk or optical disk. The readable storage medium can be any available medium that can be accessed by a general-purpose or special-purpose computer.

[0094] An exemplary readable storage medium is coupled to the processor, so that the processor can read information from the readable storage medium and write information to the readable storage medium. Of course, the readable storage medium can also be an integral part of the processor. The processor and the readable storage medium can be located in an Application Specific Integrated Circuit (ASIC). Of course, the processor and the readable storage medium can also exist as discrete components in the device.

[0095] The division of units is only a logical function division, and actual implementation can have another division manner, for example, multiple units or components can be combined or integrated into another system, or some features can be ignored or not executed. Another point is that the coupling or direct coupling or communication connection between the units shown or discussed can be indirect coupling or communication connection through some interfaces, devices or units, which can be electrical, mechanical or other forms.

[0096] The units described as separate components can or can not be physically separate, and the components shown as units can or can not be physical units, that is, can be located in one place, or can be distributed to multiple network units. Part or all of the units can be selected according to actual needs to achieve the purpose of the embodiment scheme.

[0097] In addition, the functional units in each embodiment of the present application can be integrated in one processing unit, or each unit can be physically present separately, or two or more units can be integrated in one unit.

[0098] If the functions are realized in the form of software function units and sold or used as independent products, they can be stored in a computer readable storage medium. Based on this understanding, the technical solutions of the present application or the parts of the present application that essentially contribute to the prior art or the parts of the technical solutions can be embodied in the form of software products. The computer software product is stored in a storage medium and includes a plurality of instructions for causing a computer device (which can be a personal computer, a server, or a network device, etc.) to execute all or part of the steps of the embodiments of the present application. The aforementioned storage medium includes: a U disk, a mobile hard disk, a read-only memory (ROM, Read-Only Memory), a random access memory (RAM, Random Access Memory), a magnetic disk or an optical disk, and various program code storage media.

[0099] Those skilled in the art can understand that all or part of the steps of the above-mentioned method embodiments can be completed by program instruction related hardware. The aforementioned program can be stored in a computer readable storage medium. The program executes the steps including the above-mentioned method embodiments when executed; and the aforementioned storage medium includes: ROM, RAM, magnetic disk or optical disk, and various program code storage media.

[0100] It should be understood that many of the materials and devices exemplified in this disclosure are articles of manufacture (i.e., articles of manufacture) according to this disclosure. The articles of manufacture can be manufactured as such or can be manufactured by combining the materials and devices exemplified in this disclosure. It is also to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting. It should be understood that, in some embodiments, equivalents to the specific electrode structures and / or methods described herein can be employed without departing from the scope of the application. Accordingly, the phraseology and terminology used herein is for the purpose of description and should not be regarded as limiting. The use of "including," "comprising," "having," "containing," "involving," "characterized by," "characterized into," and variations thereof herein, is meant to encompass the items listed thereafter, and equivalents thereof as well as additional items. Although the foregoing application has been described in some detail by way of illustration and example, it is not to be limited thereby, but rather, only by the scope of the appended claims.

Claims

1. A control chip, characterized by comprising: The control chip is electrically connected with the fuser, and comprises a fusing control module and a main control module, wherein: The main control module is configured to read a current job type; The fusing control module comprises a first protection circuit, a second protection circuit and an execution circuit; The first protection circuit is configured to send a first pre-signal to the execution circuit when a received temperature detection signal is greater than or equal to a first preset value; The second protection circuit is configured to send a second pre-signal to the execution circuit when a received temperature detection signal is greater than or equal to a second preset value, the second preset value being greater than the first preset value; The execution circuit is configured to perform protection control on the fuser when the first pre-signal is received and the current job type is a first job type, and the execution circuit is further configured to perform protection control on the fuser when the second pre-signal is received; The main control module reads the second pre-signal and transmits an imaging stop signal to an imaging module to control the imaging module to stop imaging. The current job type is determined by the main control module according to a paper type specified when a job is issued.

2. The control chip according to claim 1, characterized in that, The fusing control module further comprises a third protection circuit configured to send a third pre-signal to the execution circuit when a received temperature detection signal is greater than or equal to a third preset value; The execution circuit is configured to perform protection control on the fuser when the third pre-signal is received.

3. The control chip of claim 1, wherein, The execution circuit is a logic gate circuit.

4. The control chip of claim 1, wherein, The control chip further comprises a bus, and the fusing control module comprises a register circuit; The second protection circuit is configured to register the second pre-signal in the register circuit when a received temperature detection signal is greater than or equal to a second preset value, and the main control module transmits an imaging stop signal to the imaging module to control the imaging module to stop imaging after reading the second pre-signal from the register circuit through the bus.

5. A control method applied to the control chip according to any one of claims 1 to 4, characterized in that, The method comprises: receiving a temperature detection signal; if the temperature detection signal is greater than or equal to a first preset value, sending a first pre-signal to an execution circuit, the first pre-signal being used to control the execution circuit to perform protection control on a fuser; if the temperature detection signal is greater than or equal to a second preset value, sending a second pre-signal to the execution circuit, the second pre-signal being used to control the execution circuit to perform protection control on the fuser.

6. The control method according to claim 5, characterized by if the temperature detection signal is greater than or equal to a first preset value, sending a first pre-signal to an execution circuit, specifically comprising: obtaining a first duration during which the temperature detection signal is greater than or equal to the first preset value; if the first duration is greater than or equal to a first preset time, sending the first pre-signal to the execution circuit, wherein the first preset time is associated with a current job type.

7. The control method according to claim 5, characterized by, The method further comprises: if the temperature detection signal is greater than or equal to a third preset value, obtaining a second duration during which the temperature detection signal is greater than or equal to the third preset value; If the second duration is greater than or equal to a second preset time, a third pre-signal is sent to an execution circuit; the third pre-signal is used to control the execution circuit to execute the protection control on the fuser.

8. A computer-readable storage medium, characterized in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are used to implement the control method in any one of claims 5-7 when executed by the processor.

9. A computer program product, characterised in that, The computer readable storage medium stores computer execution instructions, and the computer execution instructions are used to implement the control method in any one of claims 5-7 when executed by the processor.

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