CN215705205U - Print head voltage control circuit and printing apparatus - Google Patents
Print head voltage control circuit and printing apparatus Download PDFInfo
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- CN215705205U CN215705205U CN202121182627.5U CN202121182627U CN215705205U CN 215705205 U CN215705205 U CN 215705205U CN 202121182627 U CN202121182627 U CN 202121182627U CN 215705205 U CN215705205 U CN 215705205U
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Abstract
The utility model provides a printing head voltage control circuit and printing equipment, comprising: a cascade switch circuit group and a controller; the cascade switch circuit group comprises a first end and a second end, and the controller comprises an output end; the first end of the cascade switch circuit group is electrically connected with the output end of the controller, and the second end of the cascade switch circuit group is electrically connected with the controlled printing head; the controller sends a printing head driving signal to the cascade switch circuit, and the cascade switch circuit is conducted when receiving the printing head driving signal and provides a specified voltage for the controlled printing head so as to drive the controlled printing head to execute printing action. The utility model can effectively reduce the overall energy consumption of the printing equipment, thereby obviously prolonging the service life of the printing equipment.
Description
Technical Field
The utility model relates to the technical field of printing, in particular to a printing head voltage control circuit and printing equipment.
Background
Various printing devices are increasingly used in the market today, such as in the industries of logistics, finance, high speed, retail, etc., and the power consumption of printers is an important component of energy consumption. The related art provides a printing apparatus in which a printhead driving power source needs to be continuously applied to the printhead, which results in high overall power consumption of the printing apparatus, and thus a short service life of the printing apparatus.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a printing head voltage control circuit and printing equipment, which can effectively reduce the overall energy consumption of the printing equipment, thereby obviously prolonging the service life of the printing equipment.
In a first aspect, an embodiment of the present invention provides a printhead voltage control circuit, including: a cascade switch circuit group and a controller; wherein the cascaded switch circuit set comprises a first terminal and a second terminal, and the controller comprises an output terminal; the first end of the cascade switch circuit group is electrically connected with the output end of the controller, and the second end of the cascade switch circuit group is electrically connected with the controlled printing head; the controller sends a printing head driving signal to the cascade switch circuit, and the cascade switch circuit is conducted when receiving the printing head driving signal and provides a specified voltage for the controlled printing head so as to drive the controlled printing head to execute printing action.
In one embodiment, the cascaded set of switching circuits includes a first switching circuit electrically connected to the output of the controller through the first terminal, a second switching circuit electrically connected to the first switching circuit and the third switching circuit, respectively, and a third switching circuit electrically connected to the controlled printhead through the second terminal; when the print head driving signal is received, the first switch circuit is turned off, the second switch circuit is turned on, and the third switch circuit is turned on.
In one embodiment, the first switch circuit includes a first transistor, a first resistor, and a second resistor, a base of the first transistor is electrically connected to one end of the first resistor, the other end of the first resistor is electrically connected to the controller, an emitter of the first transistor is grounded, a collector of the first transistor is electrically connected to one end of the second resistor, and the other end of the second resistor is electrically connected to the second switch circuit; wherein the print head driving signal is at a low level, the base voltage of the first transistor is at a low level, and the collector and the emitter of the first transistor are turned off.
In one embodiment, the second switch circuit includes a second transistor and a third resistor, a base of the second transistor is electrically connected to the other end of the second resistor, an emitter set of the second transistor is grounded, a collector of the second transistor is electrically connected to one end of the third resistor, and the other end of the third resistor is electrically connected to the third switch circuit; and the base voltage of the second transistor is high level, and the collector and the emission set of the second transistor are conducted.
In one embodiment, the third switch circuit includes a third transistor, a gate of which is electrically connected to the other end of the third resistor, a source of which is electrically connected to a first designated power source, and a drain of which is electrically connected to the controlled print head; wherein a gate voltage of the third transistor is smaller than a source voltage of the third transistor, the third transistor is turned on, and a specified voltage supplied from the first specified power supply is applied to the controlled print head.
In one embodiment, the first transistor further comprises a fourth resistor and a fifth resistor, the base of the first transistor is further connected to a second specified power supply via the fourth resistor, and the collector of the first transistor is further connected to the second specified power supply via the fifth resistor.
In one embodiment, the third switch circuit further includes a sixth resistor, and the gate of the third transistor is further connected to a third specified power supply via the sixth resistor.
In one embodiment, the first transistor and the second transistor are both NPN transistors.
In one embodiment, the third transistor is a MOSFET field effect transistor.
In a second aspect, embodiments of the present invention further provide a printing apparatus, including the print head voltage control circuit provided in any one of the first aspects, and a controlled print head electrically connected to the print head voltage control circuit.
The printing head voltage control circuit and the printing equipment provided by the embodiment of the utility model comprise a cascade switch circuit group and a controller; the cascade switch circuit group comprises a first end and a second end, and the controller comprises an output end; the first end of the cascade switch circuit group is electrically connected with the output end of the controller, and the second end of the cascade switch circuit group is electrically connected with the controlled printing head; the controller sends a printing head driving signal to the cascade switch circuit, and the cascade switch circuit is conducted when receiving the printing head driving signal and provides a specified voltage for the controlled printing head so as to drive the controlled printing head to execute printing action. The embodiment of the utility model is electrically connected with the controlled printing head through the cascade switch circuit group, the cascade switch circuit group is conducted when receiving the printing head driving signal sent by the controller, and at the moment, the specified voltage is provided for the controlled printing head, the cascade switch circuit group is cut off when not receiving the printing head driving signal sent by the controller, and at the moment, the specified voltage is not provided for the controlled printing head.
Additional features and advantages of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model. The objectives and other advantages of the utility model will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
FIG. 1 is a schematic diagram of a printhead voltage control circuit according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of another printhead voltage control circuit according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of another printhead voltage control circuit according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a printing apparatus according to an embodiment of the present invention.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the following embodiments, and it should be understood that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
At present, the printing equipment provided by the related art has the problems of high overall energy consumption of the printing equipment and short service life of the printing equipment, and therefore, the embodiment of the utility model provides the printing head voltage control circuit and the printing equipment, which can effectively reduce the overall energy consumption of the printing equipment, thereby obviously prolonging the service life of the printing equipment.
To facilitate understanding of the present embodiment, a printhead voltage control circuit disclosed in the present embodiment will be described in detail first.
The present invention provides a print head voltage control circuit, comprising: a cascade switch circuit group and a controller; the cascade switch circuit group comprises a first end and a second end, and the controller comprises an output end; the first end of the cascade switch circuit group is electrically connected with the output end of the controller, and the second end of the cascade switch circuit group is electrically connected with the controlled printing head; the controller sends a printing head driving signal to the cascade switch circuit, and the cascade switch circuit is conducted when receiving the printing head driving signal and provides a specified voltage for the controlled printing head so as to drive the controlled printing head to execute printing action.
For the sake of understanding, fig. 1 illustrates a schematic structure of a printhead voltage control circuit, and as shown in fig. 1, the printhead voltage control circuit is illustrated to include a cascaded switching circuit group 110 and a controller 120, where the cascaded switching circuit group 110 includes a first end 111 and a second end 112, the controller includes an output end 121, the first end 111 of the cascaded switching circuit group 110 is electrically connected to the output end 121 of the controller 120, and the second end 112 of the cascaded switching circuit group 110 is electrically connected to a controlled printhead. In one embodiment, the controller 120 sends a print head driving signal to the cascaded switching circuit group 110, and the cascaded switching circuit group 110 is turned on and provides a specified voltage required for executing a printing action to the controlled print head; if the controller 120 does not send the print head driving signal to the cascade switch circuit group 110, the cascade switch circuit group 110 will be turned off, and the specified voltage will not be provided to the controlled print head. The print head driving signal may be understood as a signal that instructs the cascade switch circuit group 110 to supply a specified voltage to the controlled print head. Alternatively, the print head driving signal may take the form of a level, for example, if the controller 120 sends a low level to the set of cascade switch circuits 110, the controller 120 is considered to send the print head driving signal to the set of cascade switch circuits 110; if the controller 120 sends a high level to the bank of cascade switch circuits 110, it is regarded that the controller 120 does not send the head driving signal to the bank of cascade switch circuits 110.
The printing head voltage control circuit provided by the embodiment of the utility model is electrically connected with the controlled printing head through the cascade switch circuit group, the cascade switch circuit group is conducted when receiving the printing head driving signal sent by the controller, the specified voltage is provided for the controlled printing head at the moment, the cascade switch circuit group is cut off when not receiving the printing head driving signal sent by the controller, the specified voltage is not provided for the controlled printing head at the moment, and compared with the printing equipment provided by the related technology, the printing head voltage control circuit provided by the embodiment of the utility model needs to continuously apply the printing head driving power supply to the printing head, the whole energy consumption of the printing equipment can be effectively reduced, and the service life of the printing equipment is obviously prolonged.
In order to facilitate understanding of the printhead voltage control circuit provided in the above embodiment, the embodiment of the present invention provides a schematic structural diagram of another printhead voltage control circuit as shown in fig. 2, in this embodiment, the cascaded switch circuit group 110 includes a first switch circuit 113, a second switch circuit 114 and a third switch circuit 115, the first switch circuit 113 is electrically connected to the output end 121 of the controller 120 through a first end 111, the second switch circuit 114 is electrically connected to the first switch circuit 113 and the third switch circuit 115, respectively, and the third switch circuit 115 is electrically connected to the printhead to be controlled through a second end 112. In practical applications, when the cascade switch circuit group 110 receives a print head driving signal sent by the controller 120, the first switch circuit 113 is turned on, the second switch circuit 114 is turned off, the third switch circuit 115 is also turned on, the third switch circuit 115 is also electrically connected to the first designated power source VFF, and when the third switch circuit 115 is turned on, the first designated power source VFF supplies a designated voltage to the print head to be controlled, so as to drive the print head to be controlled to perform a printing operation.
In a specific implementation manner, the embodiment of the present invention further provides a specific structure of a printhead voltage control circuit, referring to a schematic structural diagram of another printhead voltage control circuit shown in fig. 3.
Fig. 3 illustrates that the first switch circuit 113 includes a first transistor Q1, a first resistor R1, a second resistor R2, a fourth resistor R4, and a fifth resistor R5. The base of the first transistor Q1 is electrically connected to one end of the first resistor R1, the other end of the first resistor R1 is electrically connected to the controller 120, the emitter/collector of the first transistor Q1 is grounded, the collector of the first transistor Q1 is electrically connected to one end of the second resistor R2, and the other end of the second resistor R2 is electrically connected to the second switch circuit 114. With continued reference to fig. 3, fig. 3 further illustrates that the base of the first transistor Q1 is further connected to a second specified power source (e.g., 3.3V) via a fourth resistor R4, and the collector of the first transistor Q1 is further connected to the second specified power source via a fifth resistor R5. Alternatively, the first transistor Q1 may be an NPN (Negative-Positive-Negative) transistor.
In practical applications, if the controller 120 sends a low level to the cascaded switch circuit group 110, it is determined that the printhead driving signal is received, and the base voltage of the first transistor Q1 is low, and the collector and emitter of the first transistor Q1 are turned off. If the controller 120 sends a high level to the cascaded switch circuit group 110, the base voltage of the first transistor Q1 is at a high level, and the collector and the emitter of the first transistor Q1 are turned on.
With continued reference to fig. 3, fig. 3 further illustrates that the second switch circuit 114 may include a second transistor Q2 and a third resistor R3, wherein a base of the second transistor Q2 is electrically connected to the other end of the second resistor R2, an emitter-collector of the second transistor Q2 is grounded, a collector of the second transistor Q2 is electrically connected to one end of the third resistor R3, and the other end of the third resistor R3 is electrically connected to the third switch circuit 115. Alternatively, the second transistor Q2 may also be an NPN transistor.
In practical applications, if the controller 120 sends a low level to the cascaded switch circuit group 110, it is determined that the printhead driving signal is received, and the base voltage of the second transistor Q2 is at a high level, and the collector and emitter of the second transistor Q2 are turned on. If the controller 120 sends a high level to the cascaded switch circuit group 110, the base voltage of the second transistor Q2 is at a low level, and the collector and the emitter of the second transistor Q2 are turned off.
With continued reference to fig. 3, fig. 3 further illustrates that the third switch circuit includes a third transistor Q3 and a sixth resistor R6, a gate of the third transistor Q3 is electrically connected to the other end of the third resistor R3, a source of the third transistor Q3 is electrically connected to the first designated power source, a drain of the third transistor Q3 is electrically connected to the controlled printhead, for example, the drain of the third transistor Q3 is electrically connected to pins 1, 2 and 3 of the controlled printhead, and a gate of the third transistor Q3 is further connected to the third designated power source (e.g., VFF) through the sixth resistor R6. Alternatively, the third Transistor Q3 may be a Metal-Oxide-Semiconductor Field-Effect Transistor (MOSFET) Field-Effect Transistor.
In practical applications, if the controller 120 sends a low level to the cascaded switch circuit group 110, it is determined that the printhead driving signal is received, and at this time, the gate voltage of the third transistor Q3 is less than the source voltage VFF of the third transistor Q3, the third transistor Q3 is turned on, and the specified voltage provided by the first specified power supply is applied to the printhead to be controlled, where the specified voltage is the same as the source voltage VFF. If the controller 120 sends a high level to the cascade switch circuit group 110, the gate voltage of the third transistor Q3 is not less than the source voltage of the third transistor Q3, and the third transistor is turned off, so that the designated voltage provided by the first designated power source cannot be applied to the controlled printhead.
On the basis of the above-mentioned fig. 3, the embodiment of the present invention provides an application example of a print head voltage control circuit. When the printing apparatus is in a standby state, the printhead driving signal OPEN _ VTPH signal issued by the controller 120 is at a high level, and at this time, the voltage at the base a point of the first transistor Q1 is at a high level, and the collector and emitter of the first transistor Q1 are turned on. At this time, the voltage at the base terminal B of the second transistor Q2 is low, and thus the collector and emitter of the second transistor Q2 are turned off. At this time, the gate voltage C of the third transistor Q3 is not less than the source voltage VFF, the third transistor Q3 is turned off, and the source voltage VFF cannot be applied to the 1 st, 2 nd, and 3 rd pins of the controlled printhead.
When the printing apparatus is in a printing state, the printhead driving signal OPEN _ VTPH signal issued by the controller 120 is at a low level, and at this time, the voltage at the base a point of the first transistor Q1 is at a low level, and the collector and emitter of the first transistor Q1 are turned off. At this time, the voltage at the base terminal B of the second transistor Q2 is high, and thus the collector and emitter of the second transistor Q2 are turned on. At this time, the voltage at the gate voltage point C of the third transistor Q3 is not less than the source voltage VFF, the third transistor Q3 is turned on, and the source voltage VFF is applied to pins 1, 2, and 3 of the controlled printhead.
In summary, the print head voltage control circuit provided in the embodiment of the present invention may not apply the source voltage VFF to the print head when the printing device is in the standby state, and may apply the specified voltage to the controlled print head when the printing device is in the printing state, so that the overall energy consumption of the printing device may be effectively reduced, and the service life of the printing device may be significantly prolonged.
Based on the print head voltage control circuit provided in the foregoing embodiment, an embodiment of the present invention provides a printing apparatus, referring to a schematic structural diagram of a printing apparatus shown in fig. 4, the printing apparatus includes the print head voltage control circuit 100 provided in the foregoing embodiment, and a controlled print head 200 electrically connected to the print head voltage control circuit 100. In practical applications, the controller 120 in the print head voltage control circuit 100 sends a print head driving signal to the cascade switch circuit group 110, and the cascade switch circuit group 110 is turned on when receiving the print head driving signal and provides a designated voltage to the controlled print head 200, so as to drive the controlled print head 200 to designate a printing operation.
The printing device provided by the embodiment of the utility model adopts the printing head voltage control circuit provided by the previous embodiment to provide the specified voltage for the printing head so as to drive the printing head to execute the printing action, the printing head control circuit is electrically connected with the controlled printing head through the cascade switch circuit group, the cascade switch circuit group is conducted when receiving a printing head driving signal sent by the controller, and at the moment, a specified voltage is provided for the controlled printing head, and the cascade switch circuit group is cut off when the printing head driving signal sent by the controller is not received, and the specified voltage is not provided for the controlled printing head at the moment.
It can be clearly understood by those skilled in the art that, for convenience and brevity of description, the specific working process of the printing apparatus described above may refer to the corresponding process in the foregoing embodiment, and is not described herein again.
In the description of the embodiments of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meaning of the above terms in the present invention can be understood in specific cases for those skilled in the art.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; while the utility model has been described in detail and with reference to the foregoing embodiments, it will be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present invention.
Claims (10)
1. A printhead voltage control circuit, comprising: a cascade switch circuit group and a controller;
wherein the cascaded switch circuit set comprises a first terminal and a second terminal, and the controller comprises an output terminal;
the first end of the cascade switch circuit group is electrically connected with the output end of the controller, and the second end of the cascade switch circuit group is electrically connected with the controlled printing head;
the controller sends a printing head driving signal to the cascade switch circuit, and the cascade switch circuit is conducted when receiving the printing head driving signal and provides a specified voltage for the controlled printing head so as to drive the controlled printing head to execute printing action.
2. The printhead voltage control circuit according to claim 1, wherein the cascade switch circuit group includes a first switch circuit electrically connected to the output terminal of the controller through the first terminal, a second switch circuit electrically connected to the first switch circuit and the third switch circuit, respectively, and a third switch circuit electrically connected to the controlled printhead through the second terminal;
when the print head driving signal is received, the first switch circuit is turned off, the second switch circuit is turned on, and the third switch circuit is turned on.
3. The printhead voltage control circuit according to claim 2, wherein the first switching circuit includes a first transistor, a first resistor, and a second resistor, a base of the first transistor being electrically connected to one end of the first resistor, another end of the first resistor being electrically connected to the controller, an emitter-collector of the first transistor being grounded, a collector of the first transistor being electrically connected to one end of the second resistor, another end of the second resistor being electrically connected to the second switching circuit; wherein the content of the first and second substances,
the print head driving signal is at a low level, the base voltage of the first transistor is at a low level, and the collector and the emitter of the first transistor are turned off.
4. The printhead voltage control circuit according to claim 3, wherein the second switching circuit includes a second transistor and a third resistor, a base of the second transistor is electrically connected to the other end of the second resistor, an emitter set of the second transistor is grounded, a collector of the second transistor is electrically connected to one end of the third resistor, and the other end of the third resistor is electrically connected to the third switching circuit; wherein the content of the first and second substances,
the base voltage of the second transistor is high level, and the collector and the emission set of the second transistor are conducted.
5. The printhead voltage control circuit according to claim 4, wherein the third switching circuit includes a third transistor, a gate of the third transistor is electrically connected to the other end of the third resistor, a source of the third transistor is electrically connected to a first specified power supply, and a drain set of the third transistor is electrically connected to the controlled printhead; wherein the content of the first and second substances,
the gate voltage of the third transistor is smaller than the source voltage of the third transistor, the third transistor is turned on, and a specified voltage supplied from the first specified power supply is applied to the controlled print head.
6. The printhead voltage control circuit of claim 3, wherein the first transistor further comprises a fourth resistor and a fifth resistor, the base of the first transistor further being connected to a second specified power supply via the fourth resistor, the collector of the first transistor further being connected to the second specified power supply via the fifth resistor.
7. The printhead voltage control circuit of claim 5, wherein the third switch circuit further comprises a sixth resistor, the gate of the third transistor further being connected to a third specified power supply via the sixth resistor.
8. The printhead voltage control circuit of claim 4, wherein the first transistor and the second transistor are both NPN transistors.
9. The printhead voltage control circuit of claim 5, wherein the third transistor is a MOSFET field effect transistor.
10. A printing apparatus comprising a printhead voltage control circuit according to any one of claims 1 to 9, and a controlled printhead electrically connected to the printhead voltage control circuit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182627.5U CN215705205U (en) | 2021-05-28 | 2021-05-28 | Print head voltage control circuit and printing apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121182627.5U CN215705205U (en) | 2021-05-28 | 2021-05-28 | Print head voltage control circuit and printing apparatus |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215705205U true CN215705205U (en) | 2022-02-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202121182627.5U Active CN215705205U (en) | 2021-05-28 | 2021-05-28 | Print head voltage control circuit and printing apparatus |
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|---|---|
| CN (1) | CN215705205U (en) |
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2021
- 2021-05-28 CN CN202121182627.5U patent/CN215705205U/en active Active
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