Printing nozzle temperature monitoring circuit structure and printing system

Abstract

The utility model discloses a printing nozzle temperature monitoring circuit structure and a printing system, and relates to the technical field of printing. According to the embodiment of the invention, the microprocessor does not need to poll to obtain the monitoring temperatures of the plurality of nozzles, also does not need to obtain the nozzle temperature feedback signal and analyze the returned nozzle temperature, and only needs to broadcast and send the nozzle temperature control signal to the plurality of nozzles, obtain the nozzle temperature feedback signal, analyze the returned nozzle temperature and send the nozzle temperature to the editable controller for processing. And a temperature receiving interface and a temperature feedback interface are separated, so that the workload of the microprocessor is reduced, and the processing efficiency of the microprocessor is improved.

Description

Technical Field

[0001] This application relates to the field of printing technology, specifically to a printhead temperature monitoring circuit structure and printing system. Background Technology

[0002] With the development of printing technology, temperature heaters and temperature sensors can be installed in printheads to control the ink ejection temperature of the final printhead, improving print quality and preventing ink from cooling, solidifying, and clogging the printhead. However, currently, sending printhead control signals and obtaining printhead temperature feedback signals are both implemented by a microprocessor (MCU). The microprocessor acquires and analyzes print data to determine when to control the printhead temperature. Based on the obtained printhead temperature feedback signals, the microprocessor performs temperature feedback and real-time monitoring and adjustment. At the same time, the microprocessor also handles external display data transmission and other external interface connections, increasing the microprocessor's load. Moreover, the microprocessor's communication speed is slow. For each printhead, it is necessary to execute sending temperature control commands, temperature reading commands, receiving returned printhead temperature signals, and parsing the returned printhead temperature. The more printheads there are, the longer the microprocessor's processing time becomes, resulting in severe waiting times for the microprocessor's processing. Utility Model Content

[0003] This application provides a printhead temperature monitoring circuit structure and printing system, which can solve the technical problem that the current microprocessor-controlled printhead temperature control, acquisition of printhead temperature feedback signals, parsing of the returned printhead temperature, and real-time monitoring and adjustment of printhead temperature result in long microprocessor processing time and serious waiting for the microprocessor's processing progress.

[0004] This application provides a printer head temperature monitoring circuit structure, including:

[0005] The programmable controller is equipped with a first external control interface, a first data transmission interface, and multiple temperature feedback interfaces;

[0006] Multiple printheads, each printhead having a second data transmission interface, a temperature control inlet and a temperature feedback outlet; the first data transmission interface is connected to the second data transmission interface of each printhead to transmit printing data, and the temperature feedback outlet of each printhead is connected to the temperature feedback interface in a one-to-one correspondence to transmit the printhead feedback temperature.

[0007] The microprocessor has a temperature control outlet connected to the temperature control inlet to transmit nozzle temperature control signals.

[0008] Furthermore, the nozzle is equipped with a heating resistor and a temperature sensor. The heating resistor is connected to the temperature control inlet, and the temperature sensor is connected to the temperature feedback outlet.

[0009] Furthermore, the multiple nozzles are integrated into a nozzle array structure, and the second data transmission interface of all nozzles in the nozzle array structure is connected in parallel to the first data transmission interface, and the temperature control inlet of all nozzles in the nozzle array structure is connected in parallel to the temperature control outlet.

[0010] Furthermore, the microprocessor also has an external interface, which is adapted to connect to an external control device.

[0011] Furthermore, the microprocessor also includes a display interface adapted to connect to a monitor.

[0012] Furthermore, the microprocessor also includes a sensor interface adapted to connect an inkjet flow rate sensor.

[0013] Furthermore, the printhead temperature monitoring circuit structure also includes a terminal controller, which is connected to the first external control interface.

[0014] Furthermore, the printhead temperature monitoring circuit structure also includes a multiplexer. The multiplexer has multiple temperature control feedback input ports, temperature control feedback output ports, and a reset interface. The temperature control feedback input ports are connected one-to-one with the temperature feedback output ports. The temperature control feedback output ports are connected to the microprocessor. The temperature control feedback output ports feed back the printhead feedback temperature signal obtained by the multiplexer to the microprocessor. The reset interface is connected to the microprocessor.

[0015] This application also provides a printing system, which includes the printhead temperature monitoring circuit structure described in any of the preceding claims.

[0016] Furthermore, the printing system also includes a terminal controller, which is connected to the first external control interface of the editable controller.

[0017] The printhead temperature monitoring circuit structure and printing system provided in this application embodiment eliminate the need for the microprocessor to poll and obtain the monitoring temperature of multiple printheads, as well as to obtain printhead temperature feedback signals and parse the returned printhead temperatures. Instead, it only needs to broadcast printhead temperature control signals to multiple printheads simultaneously. The printhead temperature feedback signals and the returned printhead temperatures are then processed by the programmable controller. By separating the temperature reception and feedback interfaces, the workload of the microprocessor is reduced, and the processing efficiency of the microprocessor is improved. Attached Figure Description

[0018] The technical solution and other beneficial effects of this application will become apparent from the following detailed description of specific embodiments in conjunction with the accompanying drawings.

[0019] Figure 1A structural block diagram of a printhead temperature monitoring circuit provided for existing technology.

[0020] Figure 2 This is a structural block diagram of the printhead temperature monitoring circuit provided in an embodiment of this application.

[0021] Figure 3 This is a partial block diagram of the printhead temperature monitoring circuit with a multiplexer provided in an embodiment of this application. Detailed Implementation

[0022] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0023] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0024] In conjunction with background technologies, such as Figure 1 As shown, if both sending printhead control signals and acquiring printhead temperature feedback signals are currently implemented through a microprocessor (MCU), then the microprocessor needs to control the printhead temperature, acquire the printhead temperature feedback signal, parse the returned printhead temperature, and monitor and adjust the printhead temperature in real time. Print control is connected to a programmable logic controller (FPGA) via a terminal. The FPGA connects to the microprocessor and printhead to provide print data. The microprocessor connects to the printhead, identifies the print time period based on the print data, and sends the printhead temperature control signal and acquires the printhead temperature feedback signal. The microprocessor also handles external display data transmission and other external interface connections, increasing its workload.

[0025] For details, please refer to Figure 2 This application provides a printer nozzle temperature monitoring circuit structure, including:

[0026] The programmable controller is equipped with a first external control interface, a first data transmission interface, and multiple temperature feedback interfaces;

[0027] Multiple printheads, each printhead having a second data transmission interface, a temperature control inlet and a temperature feedback outlet; the first data transmission interface is connected to the second data transmission interface of each printhead to transmit printing data, and the temperature feedback outlet of each printhead is connected to the temperature feedback interface in a one-to-one correspondence to transmit the printhead feedback temperature.

[0028] The microprocessor has a temperature control outlet connected to the temperature control inlet to transmit nozzle temperature control signals.

[0029] Furthermore, the nozzle is equipped with a heating resistor and a temperature sensor. The heating resistor is connected to the temperature control inlet, and the temperature sensor is connected to the temperature feedback outlet.

[0030] Furthermore, the multiple nozzles are integrated into a nozzle array structure, and the second data transmission interface of all nozzles in the nozzle array structure is connected in parallel to the first data transmission interface, and the temperature control inlet of all nozzles in the nozzle array structure is connected in parallel to the temperature control outlet.

[0031] Furthermore, the microprocessor also has an external interface, which is adapted to connect to an external control device.

[0032] Furthermore, the microprocessor also includes a display interface adapted to connect to a monitor.

[0033] Furthermore, the microprocessor also includes a sensor interface adapted to connect an inkjet flow rate sensor.

[0034] Furthermore, the printhead temperature monitoring circuit structure also includes a terminal controller (PC), which is connected to the first external control interface.

[0035] like Figure 3 As shown, the printhead temperature monitoring circuit structure also includes a multiplexer (MUX). The multiplexer has multiple temperature control feedback input ports, temperature control feedback output ports, and a reset interface. The temperature control feedback input ports are connected one-to-one with the temperature feedback output ports. The temperature control feedback output ports are connected to the microprocessor. The temperature control feedback output ports feed back the printhead feedback temperature signal obtained by the multiplexer to the microprocessor. The reset interface is connected to the microprocessor.

[0036] This application also provides a printing system, which includes the printhead temperature monitoring circuit structure described in any of the preceding claims.

[0037] Please see Figure 2The printing system also includes a terminal controller, which is connected to the first external control interface of the editable controller.

[0038] The printhead temperature monitoring circuit structure and printing system provided in this application embodiment eliminate the need for the microprocessor to poll and obtain the monitoring temperature of multiple printheads, as well as to obtain printhead temperature feedback signals and parse the returned printhead temperatures. Instead, it only needs to broadcast printhead temperature control signals to multiple printheads simultaneously. The printhead temperature feedback signals and the returned printhead temperatures are then processed by the programmable controller. By separating the temperature reception and feedback interfaces, the workload of the microprocessor is reduced, and the processing efficiency of the microprocessor is improved.

[0039] In the above embodiments, the descriptions of each embodiment have different focuses. For parts not described in detail in a certain embodiment, please refer to the relevant descriptions in other embodiments.

[0040] The above provides a detailed description of the printhead temperature monitoring circuit structure and printing system provided in the embodiments of this application. Specific examples have been used to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the technical solutions and core ideas of this application. Those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. These modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A print head temperature monitoring circuit structure, comprising: include: The programmable controller is equipped with a first external control interface, a first data transmission interface, and multiple temperature feedback interfaces; Multiple printheads, each printhead having a second data transmission interface, a temperature control inlet and a temperature feedback outlet; the first data transmission interface is connected to the second data transmission interface of each printhead to transmit printing data, and the temperature feedback outlet of each printhead is connected to the temperature feedback interface in a one-to-one correspondence to transmit the printhead feedback temperature. The microprocessor has a temperature control outlet connected to the temperature control inlet to transmit nozzle temperature control signals.

2. The print head temperature monitoring circuit structure of claim 1, wherein, The nozzle is equipped with a heating resistor and a temperature sensor. The heating resistor is connected to the temperature control inlet, and the temperature sensor is connected to the temperature feedback outlet.

3. The print head temperature monitoring circuit structure of claim 1, wherein, Multiple nozzles are integrated into a nozzle array structure. The second data transmission interface of all nozzles in the nozzle array structure is connected in parallel to the first data transmission interface. The temperature control inlet of all nozzles in the nozzle array structure is connected in parallel to the temperature control outlet.

4. The print head temperature monitoring circuit structure of claim 1, wherein, The microprocessor also has an external interface, which is adapted to connect to an external control device.

5. The print head temperature monitoring circuit structure of claim 1, wherein, The microprocessor also has a display interface adapted to connect to a monitor.

6. The print head temperature monitoring circuit structure of claim 1, wherein, The microprocessor also has a sensor interface adapted to connect an inkjet flow rate sensor.

7. The print head temperature monitoring circuit structure of claim 1, wherein, The printhead temperature monitoring circuit structure also includes a terminal controller, which is connected to the first external control interface.

8. The print head temperature monitoring circuit structure of claim 1, wherein, The printhead temperature monitoring circuit structure also includes a multiplexer. The multiplexer has multiple temperature control feedback input ports, temperature control feedback output ports, and a reset interface. The temperature control feedback input ports are connected one-to-one with the temperature feedback output ports. The temperature control feedback output ports are connected to the microprocessor. The temperature control feedback output ports feed back the printhead feedback temperature signal obtained by the multiplexer to the microprocessor. The reset interface is connected to the microprocessor.

9. A printing system, characterized by The printing system includes the printhead temperature monitoring circuit structure as described in any one of claims 1 to 8.

10. The printing system of claim 9, wherein, The printing system also includes: A terminal controller, which is connected to the first external control interface of the programmable controller.

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