CN116714372A

CN116714372A - Thermal print head and thermal printer

Info

Publication number: CN116714372A
Application number: CN202310880315.9A
Authority: CN
Inventors: 请求不公布姓名
Original assignee: Hunan Nami Small Chip Semiconductor Co ltd
Current assignee: Hunan Nami Small Chip Semiconductor Co ltd
Priority date: 2023-07-18
Filing date: 2023-07-18
Publication date: 2023-09-08
Anticipated expiration: 2043-07-18
Also published as: CN116714372B

Abstract

The application provides a thermal printing head and a thermal printer, and relates to the technical field of thermal printers. The thermal printing head comprises a plurality of heating resistors which are connected in parallel, one end of each heating resistor is sequentially connected through a power supply wire, the lengths of the power supply wires between any two adjacent heating resistors and the power supply nodes of the power supply wires are equal, the thermal printing head further comprises a plurality of voltage sources, the voltage sources are connected with the power supply wires through the same connecting wires, and the lengths of the power supply wires between any two adjacent connecting wires and the connecting nodes of the power supply wires are equal. Based on the technical scheme of the application, the voltage of the voltage source for supplying power to each heating resistor is basically consistent, and the heating efficiency of each heating resistor is basically consistent, thereby improving the printing quality.

Description

Thermal print head and thermal printer

Technical Field

The application relates to the technical field of thermal printers, in particular to a thermal print head and a thermal printer.

Background

The principle of the thermal printer is that whether the heating element heats is realized by controlling the high-low level conversion of the internal circuit of the thermal printing head through the CPU, thereby generating dot lines on special thermal paper and finally forming printing effect line by line. The thermal printhead is composed of a plurality of parallel heating resistors, and a voltage source for supplying power to the plurality of parallel heating resistors is sequentially connected to one ends of the plurality of parallel heating resistors through wires, for example, a thermal printhead heating circuit disclosed in patent document CN114083905a, and because of the resistance problem of the wires, the voltage source for supplying power to the heating resistors while flowing through the wires also decreases along with the length of the wires, thereby causing inconsistent heating efficiency of each heating resistor and affecting printing quality.

Disclosure of Invention

In view of the above problems in the prior art, the present application provides a thermal printhead and a thermal printer, which can solve the problem that the printing quality is affected by inconsistent heating efficiency of each heating resistor.

An aspect of the present application provides a thermal print head, where the thermal print head includes a plurality of parallel heating resistors, one end of each heating resistor is sequentially connected by a power supply wire, lengths of the power supply wires between any two adjacent heating resistors and power supply nodes of the power supply wires are equal, and the thermal print head further includes a plurality of voltage sources, where the voltage sources are all connected with the power supply wires by using the same connection wire, and lengths of the power supply wires between any two adjacent connection wires and connection nodes of the power supply wires are equal.

As a further improvement of the above technical scheme:

in the thermal print head, the connection node is further located at a middle position of two adjacent power supply nodes.

In the thermal print head, further, at least two heating resistors are connected to the power supply wires between two adjacent connection nodes.

Another aspect of the present application provides a thermal printer having a thermal print head as described above.

The above-described features may be combined in various suitable ways or replaced by equivalent features as long as the object of the present application can be achieved.

Compared with the prior art, the thermal printing head and the thermal printer provided by the application have the following beneficial effects: in the thermal print head, the plurality of voltage sources are all connected with the power supply wires by using the same connecting wires, and the lengths of the power supply wires between any two adjacent connecting wires and the connecting nodes of the power supply wires are equal, so that the lengths of the power supply wires flowing through the voltage sources when the voltage sources supply power to the heating resistors are basically consistent, the voltage of the voltage sources supplying power to the heating resistors is basically consistent, and the heating efficiency of the heating resistors is basically consistent, thereby improving the printing quality.

In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, it being understood that the following drawings only illustrate some embodiments of the present application and therefore should not be considered as limiting the scope, and other related drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

The application will be described in more detail hereinafter on the basis of embodiments and with reference to the accompanying drawings. Wherein:

fig. 1 shows a schematic structural diagram of a thermal printhead according to an embodiment of the present application.

In the drawings, like parts are designated with like reference numerals. The figures are not to scale.

Reference numerals:

100-thermal print head, 110-heating resistor, 120-power supply wire, 130-power supply node, 140-voltage source, 150-connecting wire, 160-connecting node.

Detailed Description

Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the application.

In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present application and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the present application can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

The application will be further described with reference to the accompanying drawings.

The embodiment of the application provides a thermal printhead 100 and a thermal printer, which can solve the problem that the printing quality is affected by inconsistent heating efficiency of each heating resistor 110.

Referring to fig. 1, in the thermal print head 100 provided by the embodiment of the application, the thermal print head 100 includes a plurality of parallel heating resistors 110, one end of each heating resistor 110 is sequentially connected through a power supply wire 120, the lengths of the power supply wires 120 between any two adjacent heating resistors 110 and the power supply nodes 130 of the power supply wire 120 are equal, the thermal print head 100 further includes a plurality of voltage sources 140, the plurality of voltage sources 140 are all connected with the power supply wires 120 by using the same connecting wire 150, and the lengths of the power supply wires 120 between any two adjacent connecting wires 150 and the connecting nodes 160 of the power supply wires 120 are equal.

In the thermal print head 100 provided in the embodiment of the present application, the plurality of voltage sources 140 are all connected to the power supply wire 120 by using the same connection wire 150, and the lengths of the power supply wires 120 between any two adjacent connection wires 150 and the connection node 160 of the power supply wire 120 are equal, so that the lengths of the power supply wires 120 flowing through the voltage sources 140 when the voltage sources 140 supply power to the heating resistors 110 are substantially identical, and therefore, the voltages of the voltage sources 140 supplying power to the heating resistors 110 are also substantially identical, and the heating efficiency of the heating resistors 110 is substantially identical, thereby improving the printing quality.

Referring to fig. 1, in particular, referring to the thermal printhead 100 provided by the embodiment of the present application, the connection node 160 is located at a middle position between two adjacent power supply nodes 130. At least two heating resistors 110 are connected to the power supply line 120 between two adjacent connection nodes 160.

The embodiment of the application also provides a thermal printer, which is provided with the thermal printing head 100 provided by any one of the embodiments. The specific structure of the thermal print head 100 refers to the above embodiments, and since the thermal printer adopts all the technical solutions of all the embodiments, at least has all the beneficial effects brought by the technical solutions of the embodiments, and will not be described in detail herein.

In the description of the present specification, a description referring to terms "one embodiment," "some embodiments," "examples," "specific examples," or "some examples," etc., means that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, the different embodiments or examples described in this specification and the features of the different embodiments or examples may be combined and combined by those skilled in the art without contradiction.

Although the application herein has been described with reference to particular embodiments, it is to be understood that these embodiments are merely illustrative of the principles and applications of the present application. It is therefore to be understood that numerous modifications may be made to the illustrative embodiments and that other arrangements may be devised without departing from the spirit and scope of the present application as defined by the appended claims. It should be understood that the different dependent claims and the features described herein may be combined in ways other than as described in the original claims. It is also to be understood that features described in connection with separate embodiments may be used in other described embodiments.

Claims

1. The thermal printing head comprises a plurality of heating resistors which are connected in parallel, one end of each heating resistor is sequentially connected through a power supply wire, and the lengths of the power supply wires between the heating resistors and power supply nodes of the power supply wires are equal.

2. The thermal printhead of claim 1 wherein said connection node is located intermediate adjacent two of said supply nodes.

3. The thermal printhead of claim 1 wherein at least two of said firing resistors are connected to said power supply conductors between adjacent two of said connection nodes.

4. A thermal printer having a thermal print head as claimed in any one of claims 1 to 3.