TWI325371B - Heating element - Google Patents

Description

1325371 IX. Description of the invention: [Technical field to which the invention pertains] The present invention relates to a heating element, in particular, a heating element applied to an ink jet printer. [Prior Art] The conventional ink jet printer generally uses a thermal bubble type inkjet head to perform spraying, and the thermal bubble type inkjet head is provided with a heating plate, and the heating plate heats the ink to vaporize the ink and eject it to On inkjet media. Please refer to the figure, which is the twisting element of the conventional thermal bubble type inkjet head: = map. As shown in the figure, 'the heating element 1 has a single-heating plate, and the plate 11 is composed of a resistance layer, and the opposite sides are opposite to the conductive layer 12, so that (4) is replaced by the "conductive layer 12" The person heats the resistance layer, and the plate 11 is heated to vaporize the ink (not shown) to perform ink ejection. In order to obtain a better two-difference distribution effect and produce a higher efficiency micro-thermal bubble: heating thunder: a square structure' In other words, the heating plate 11 is a square electric: layer. However, such a heating element 2 is required to reach a multi-inking teaching element! ! It can't be driven when it is over loaded. When it is '" in the heating element that is activated per unit time, the jetting point of the inkjet is limited, and the inkjet frequency is affected by the 喷墨. The month to Feng hand will naturally be because the resistance value of the resistance layer is proportional to the resistivity of the material, and the cross-sectional area of the current through the resistance layer is proportional to the ratio of the resistance of the heating plate 11 = 1325371, you can choose to use The material having a higher resistivity is a resistive layer to form the heating plate 11, or the aspect ratio and thickness of the heating plate 11 are adjusted, thereby achieving the purpose of increasing the resistance value. However, since the space provided by the heating element 1 is limited, and the design of the heating element 1 needs to take into account the mode of generation of the micro-thermal bubbles, the heating plate 11 cannot be lengthened without limitation, and in order to avoid the burning of the heating element 1, the width of the heating plate 11 It should not be too small, and it can be seen that it is difficult to increase the resistance value by adjusting the aspect ratio and thickness of the heating plate 11.

In addition, if the resistance value of the heating plate 11 is increased to increase the resistance value, not only a different resistance layer is used as the heating plate 11, but also it takes time and time to find a suitable material, which relatively increases the manufacturing difficulty; The stability of the heating plate 11 is also difficult to control, and the ink jet stability of the heating element 1 of the ink jet head (not shown) is affected. In view of this, how to develop a heating element to improve the lack of the above-mentioned prior art is an urgent problem to be solved. SUMMARY OF THE INVENTION The main object of the present invention is to provide a heating element that electrically connects a plurality of separate and juxtaposed heating plates in series with each other through a conductive layer, and the heating plates of the two terminals are respectively connected to the input end and the output. The electrical connection is made, thereby increasing the resistance value of the heating element, so as to avoid the inconvenience of increasing the resistance value by changing the material or volume ratio of the heating element, and solving the problem that the printer power supply is simultaneously driven by the heating element that cannot be overloaded. The problem that affects the inkjet frequency. 6 1325371 In order to achieve the above object, a generalized embodiment of the present invention provides a heating element suitable for an ink jet head structure, which comprises a plurality of heating plates, which are separated and arranged in parallel and transmitted through a conductive layer to each other. The cells are electrically connected in series to form an inkjet region, and the heating plates of the two terminals are electrically connected to the input end and the output end, respectively. According to the concept of the present invention, two adjacent heating plates are separated by a gap.

According to the concept of the present invention, wherein the ink-jet area is substantially a regular quadrilateral, and the plurality of heating plates are substantially rectangular with the same area; and the ink-jet area may be substantially a regular octagon, and is electrically connected to the input end and the output end. The area of the heating plate connecting the two terminals is substantially smaller than the area of the remaining heating plates to avoid the hot spot offset of the heating element. According to the concept of the present invention, when the number of the heating plates is an odd number, the input end and the output end are located on opposite sides of the ink ejection area; and when the number of the heating plates is an even number, the input end and the output end are located in the same ink ejection area. side. According to the concept of the present invention, the circuit of the heating element comprises a plurality of resistors connected in series, one end of which is connected to the input end for receiving the power signal, and the other end is connected to the switching element through the output end, and the heating element circuit is controlled by the switching element. Turn on. In order to achieve the above object, another broad aspect of the present invention provides a heating element suitable for an ink jet head structure, which comprises: a plurality of heating plates, wherein a plurality of heating plates are separated and arranged in parallel and transmitted through a conductive layer. Connected to each other in series and electrically connected; the first input end and the first output end are respectively connected to opposite ends of the plurality of heating plates, and the heating plate included between the first input end and the first output 1325371 end Defining a first ink ejection region; and a second input end and a second output end splicing on the conductive layer, and the heating plate included between the second input end and the second output end defines a second Inkjet area. According to the concept of the present invention, when the number of the heating plates is an odd number, the first input and output ends are located on opposite sides of the first nozzle ink region, and the second input and output ends are also located on opposite sides of the second nozzle ink region. When the number of the teaching plates is even, the first input and output ends are located on the same side of the first ink-ejection area, and the second input and output ends are located on the same side of the second ink-ejection area, An output terminal, a second input terminal, and a second output terminal coefficient: the current=two: the circuit of the τ component _ the complex ',, the first input terminal is connected to receive the first power signal, and the other end is transmitted through the first An output terminal is connected to the first switching component, === a plurality of resistors, one end of which is connected to the second input end, and is connected to the connector, and the output terminal and the second switching element, one-to-one switch The component controls the exhaustion of the heating element circuit. The concept of the string is the number of such resistances between the first input and the first output. Inkjet = the concept of the present invention, wherein the first ink-jet region is substantially larger than the second 1325371. [Embodiment] Some exemplary embodiments embodying the features and advantages of the present invention will be described in detail in the following description. It is to be understood that the present invention is capable of various modifications in the various aspects of the present invention, and the description and illustration are in the nature of The heating element of the present invention is mainly applied to an ink jet head structure of a printing apparatus, such as an ink jet head structure (not shown) of an ink jet printer, but is not limited thereto. Please refer to the second figure (a), which is a schematic diagram of the heating element of the first preferred embodiment of the present invention. As shown, the heating element 2 mainly includes a plurality of heating plates 211-213, an input end 22, an output end 23, and a conductive layer 24 in series with two adjacent heating plates 211-212, 212-213. In the present embodiment, the heating element 2 is preferably formed by three heating plates 211-213, but not limited thereto, and the gap between the two adjacent heating plates 211, 212 and the heating plates 212, 213 is 20 Separated from each other, the heating plates 211-213 are arranged side by side, and the length X, width Y1% and thickness (not shown) of each of the heating plates 211, 212, 213 in this embodiment are substantially equal, That is, the heating plate 211_213 may be a rectangular resistance layer having the same area and the same volume, and the total width Y of the gap 20 and the plurality of heating plates 211-213 is approximately equal to the length X of the heating plates 211-213, in other words, the plurality of heating plates 211- The ink jet region 25 defined by the gap 213 and the gap 20 therebetween is approximately a positive quadrilateral ink jet region 25 having an area of XxY. In addition, the heating plate 212 located in the middle is electrically connected to the heating plates 211 and 213 through the conductive layer 24, and the other end of the heating plate 211 connected to the conductive layer 24 is connected to the input end 22 with respect to 9 1325371. The heating plate 213 is connected to the output end 23 with respect to the other end connected to the conductive layer 24, and the input end 22 and the output end 23 may be the same conductive material as the conductive layer 24, in other words, the heating element 2 is heated relative to the two terminals. The plates 211 and 213 are electrically connected to the input end 22 and the output end 23, respectively, and the three heating plates 211-213 are also electrically connected to each other through the conductive layer 24 in series.

Please refer to the second figure (b) and cooperate with the second figure (a), wherein the second figure (b) is the circuit diagram of the second figure (a), and the circuit of the heating element 2 comprises a plurality of resistors R1, R2 connected in series. R3, which corresponds to the heating plates 211, 212, 213' in the second figure (4), respectively, and the input end Ain and the output end Aout correspond to the input end 22 and the output end 23 in the second figure (a), respectively. As shown in the second figure (b), the resistor R1 at the terminal of the series resistor R1_R3 is connected to the input terminal Ain and receives the power signal p, for example, the driving voltage, and the resistance of the other terminal of the series resistor R1-R3. 3 can be directly grounded, or the resistor R3 is connected to the drain of the switching element M through the output terminal Aout, and the switching element M transmits a data control signal D through the gate terminal to the source terminal (source) ) is connected to the ground terminal G, and controls the conduction of the circuit of the heating element 2 by using the switching element Μ to receive the data control signal Di^. In some embodiments, the switching element M can be a transistor, such as an NMOS device, but is not limited thereto. When the heating element 2 is intended to heat ink (not shown) for ink jet printing, the ink jet printer will transmit a data control signal 〇 to control the switching element Μ conduction while the power signal P will be input from the heating element 2 The Ain input, so that the temperature of the 13253371 of the heating plates 211, 212 and 213 of the heating element 2 can be raised, thereby heating the ink to generate micro-thermal bubbles, so that the ink micro-thermal bubbles are ejected from the ink-jet region 25 to the ink-jet medium ( Not shown) to complete the inkjet printing operation.

Compared with the conventional heating element 1 shown in the first figure, the resistance value of the heating element 2 of the present embodiment can be increased by about 10 times. According to Ohm's law, the required current can be reduced to the conventional heating element 1. 1/10 of the current is required. However, in order to prevent a decrease in the electric power density at the time of ink ejection, the intensity of the power signal P can be appropriately increased, for example, the driving voltage is increased, so that the heating element 2 of the embodiment can be normally and stably Ink jet printing is performed without the need for a large amount of current to achieve an actuable ink jet electrical power as in the prior art. Please refer to the third figure, which is a schematic diagram of the heating element of the second preferred embodiment of the present invention. As shown, the heating element 2 also includes a plurality of heating plates 211', 212, 213', an input end 22, an output end 23, and a conductive layer 24 of two adjacent heating plates 21Γ-212, 212-213' in series, and The number of the plurality of heating plates of the heating element 2 is preferably three, and the arrangement of the heating plates 211', 212, 213' in the embodiment and the relationship between the input end 22, the output end 23 and the conductive layer 24 are different from each other. It is the same as the first preferred embodiment shown in the second figure (a), and will not be described again. In this embodiment, the widths Y1 and thicknesses of the three heating plates 211', 212, 213' are substantially equal, and only the two heating plates 21, 213' connected to the input end 22 and the output end 23 are outwardly facing one side. The length of the side is smaller than the length X of the heating plate 212 in the middle, that is, the heating plate 212 is still a rectangular resistance layer, but the heating plates 211' and 213' are substantially two corresponding ladder resistance layers, and the input end 22. The output end 23 is electrically connected to the two heating plates 211', 213' of the 1325371, the area of which is substantially smaller than the area of the heating plate 212, and the ink-jet area 25 defined by the heating plates 21, 212, 213' and the gap 20 is defined. 'There is roughly a regular octagon.

Since the heating plate 212 located in the middle accounts for most of the resistance value of the heating element 2 and is relatively larger than the resistance values of the heating plates 211' and 213' of the two terminals, it should be understood that when the heating element 2 is heated, the highest The temperature zone can be concentrated in the central range of the ink-jet area 25' to avoid hot spot shifting of the three heating plates 211', 212, 213' due to delayed heating, and to control the ink micro-thermal bubble. It is easier to grow from the center of the heating element 2 and ejected onto the inkjet medium. The heating element of the present invention is not limited to the above embodiment, please refer to FIG. 4, which is a schematic diagram of the heating element of the third preferred embodiment of the present invention. As shown, the heating element 3 can include a plurality of heating plates 311-314, an input end 32, an output end 33, and a conductive layer 34. In this embodiment, the heating element 3 has four heatings consisting of rectangular resistive layers. The plates 311, 312, 313, 314, and the heating plates 311-314 are separated from each other by a gap 30, and the area of the ink-jet region 35 defined by the gap 30 is also ΧχΥ, which is substantially regular quadrilateral, as for heating The arrangement of the plates 311-314 with each other, the connection relationship between the heating plates 311-314 and the input terminal 32, the output terminal 33 and the conductive layer 34, and the circuit configuration thereof are the same as those of the second figure (a) and the second figure (b). The first preferred embodiment shown is similar and will not be described again. The resistance value of the heating element 3 of the present embodiment can be greatly increased by about 20 times compared with the conventional heating element 1 shown in the first figure. Similarly, by appropriately increasing the strength of the power signal P, the present invention can be used. The heating element 3, which is formed by connecting four heating 12 1325371 plates 311-314 through the conductive layer 34 in series, performs the ink ejection operation normally and stably. Of course, the heating element 3 shown in the fourth figure can also adjust the area of the heating plates 311', 314' connected to the input end 32 and the output end 33 according to the variation of the third figure (as shown in the fifth figure). It is relatively smaller than the area of the central heating plates 312, 313, and the crucible constitutes an ink jet region 35' which is substantially a regular octagon to avoid a hot spot shift during ejection.

It should be understood from the description of the second figure (a) to the fifth figure that the present invention can also be extended to design a heating element which is formed by using more than four heating plates in series, however, in order to prevent the heating plate from being burnt due to the width being too small, In the embodiment, the width Y1 of the heating plates 211-213 and 311-314 is preferably 5 μm, and the length X is the longest width Υ1. 10 times, but not limited to this. Since the heating element is driven by a suitable pulse, the volume of the generated micro-bubble of the ink is related to the area of the heating plate to which the heating element is attached. Therefore, in this case, heating elements of different embodiments are also designed in this case. Please refer to the sixth figure (a), which is a schematic diagram of the heating element of the fifth preferred embodiment of the present invention. As shown, the heating element 4 of the present embodiment includes four heating plates 411-414 and a first input end 42. The first output end 43, the conductive layer 44, and the gap 40, wherein the heating plates 411, 414 are electrically connected to the first input end 42 and the first output end 43, respectively, and the heating plates 411-414 utilize the gap 40 area. The interlayers are electrically connected in series through the conductive layer 44, and are arranged in the same manner as the heating element 3 shown in FIG. 5, so that it is no longer 13 1325371. In this embodiment, the second input end 46 is further overlapped on the conductive layer 44 of the series heating plates 411 and 412, that is, the contact layer 461, 462 is overlapped with the conductive layer 44, and the heating plate 413 is connected in series. The conductive layer 44 of 414 is overlapped with a second output end 47, that is, the contacts 471, 472 are overlapped with the conductive layer 44 to form two different first ink ejection regions 45 and second ink ejection regions 45'. Thereby, different volumes of ink micro-thermal bubbles are generated. The manner in which the microbubbles of different volumes of ink are generated in this embodiment will be described below in conjunction with the circuit diagram. Please refer to the sixth figure (b) and cooperate with the sixth figure (a). The sixth figure (b) is the circuit diagram of the sixth figure (a). The circuit of the heating element 4 includes a plurality of resistors R1 and R2 connected in series. R3, R4, which respectively correspond to the heating plates 411, 412, 413, 414 of the sixth figure (a), and the first input end Ain, the first output end Aout, the second input end Bin and the second output end Bout Corresponding to the first input terminal 42, the first output terminal 43, the second input terminal 46, and the second output terminal 47 in the sixth figure (a), respectively. As shown in FIG. 6(b), one end of the resistor R1 is connected to the first input terminal Ain to receive the first power signal pl, and the resistor R4 is transmitted through the first output terminal 八 as the first switching component M1. The thick terminal is connected, and the first switching element M1 is connected to the ground terminal G through the source terminal. In addition, one of the series resistors, that is, the series resistor ρ and the R RR middle resistor R2-R3 ' The second input terminal mn is connected to receive the second power signal P2, and the other end is connected to the second switching element M2 through the second output terminal. Similarly, the second switch M2 is connected to the source terminal and the ground. The terminal G is connected '' to form a circuit as shown in the figure (b) of the sixth 13253371, and the first and second switching elements M1, M2 are used to control the conduction path of the circuit of the heating element 4. In some embodiments, the first power signal P1 and the second power signal P2 may be driving voltages, and the first switching element M1 and the second switching element M2 may be transistors, such as NMOS components, but none of them Limited.

Please refer to the sixth figure (b) and cooperate with the sixth figure (a). When the inkjet printer wants to perform inkjet printing, it will decide to issue the first data control signal D1 according to the required volume of ink bubbles. Or the second data control signal D2 to the heating element 4, when the inkjet printer sends the first data control signal D1 and transmits to the gate terminal of the first switching element M1, the first switching element M1 receives the first data control signal The control of D1 is turned on. At this time, the first power signal P1 is input from the first input terminal Ain of the heating element 4 to heat the four resistors R1 - R4 connected in series, and at this time, the four heating plates 411 of the heating element 4 - 414 will heat up to generate a larger volume of ink micro-thermal bubbles, and the first ink-jet region 45 composed of the heating plates 411-414 and the three gaps 40 is substantially octagonal (as shown in the sixth figure (a) Shown). When the inkjet printer selects to transmit the second data control signal D2 to the gate terminal of the second switching element M2, the second switching element M2 will be controlled and turned on, at which time the second power signal P2 will be driven by the heating element 4. The second input terminal Bin inputs the heating resistors R2 and R3, and since the second input terminal Bin and the second output terminal Bout have only two resistors R2 and R3, the number is smaller than the first input terminal Ain and the first The four resistors R1-R4 between the output terminals Aout, and thus the resulting micro-thermal bubble volume is also relatively small. As can be understood from the sixth diagram (a), when the second switching element M2 is turned on, the heating 15 1325371 element 4 has only the middle two heating plates 412 and 413 to be heated, and the heating plates 412, 413 and between the two The second ink-jet region 'field 45' formed by a gap 40 is large to have a rectangular shape, and its area is smaller than the first ink-ejection region, but about: 1/2' larger than the first ink-ejection region 45 is to select Bb. ~B〇ut's electric ^ conduction path, the heat of the ink generated by the 4 listens to the heat is small, only the gas ^ "- the heat generated by the circuit when the circuit is turned on

In this embodiment, the conductive-conducting layer of the Bin-Bout circuit 肷M and the Ain-cut circuit path is not implemented, and the two circuit paths are more likely to cause the wire interference or affect the layout of the same one but the following: , using the NM0S component as the first-switching component _ and the := grounding wire must be separated 'to avoid causing the two circuits to be connected in parallel',: the roadway = the second power signal p2 _ is only 1gh. H message ^ ^ The above-mentioned "A °Ut, B (10) two kinds of circuit conduction path;, using the combination of the input end and the output end to change the different implementations ^ can also issue the first data control signal D1 to the first, for example: One input second power signal core U can make electricity:: second: one by one to make the ink bubble Zhao product can have more types: Please refer to g seven _, money book (four) read the good example of the parts of the example The heating plate 511 of the heating element 5 is = 16 1325371. The configuration of an input terminal 52, the first output terminal 53 and the conductive layer 54 is similar to that of the second preferred embodiment shown in the third figure, but this embodiment is also The second input end 56 and the second output end 57 are connected to the conductive layer 54 , that is, the contacts 561 , 562 , 571 , 572 are overlapped with the conductive layer 54 . In addition, three heating plates 511 and 512 are connected. The width of 513 is also different. In the present embodiment, the heating plate 511 connected to the first input end 52 and the heating plate 513 connected to the first output end 53 have a width Y1 which is substantially smaller than the width Y2 of the central heating plate 512. When the first data control signal D1^ controls the first switching element M1 to be turned on (as shown in FIG. 7(b)), the first power signal P1 is input by the first input terminal Ain of the heating element 5 to heat up. Three resistors of ΪΠ, R2 and R3, in other words, the three heating plates 511-513 of the heating element 5 are heated to vaporize the ink, at which time the first ink ejection region 55 contains all the heating plates 511-513 and two gaps 50. And the generated ink micro-bubble volume is the largest. When the second data control signal D2 is transmitted to the second switching element M2 φ and the second switching element M2 is turned on, the second power signal P2 is input by the second input terminal Bin to heat the centrally located resistor R2. It can be understood that at this time, only a single heating plate 512 of the heating element 5 performs the heating operation of the ink, in other words, the second ink ejection area 55' is the heating plate 512, so that the generated micro-thermal bubbles are smaller than the Ain-Aout circuit path. The generator is formed, and since the width Y2 of the heating plate 512 located at the center is larger than the width Y1 of the heating plates 511 and 513, the volume of the generated micro-thermal bubbles is not too small. As can be seen from the above several embodiments, the number of heating plates of the heating element 2 is 17 1325371

When it is odd (as shown in the second (a) and third figures), the input end 22 and the output end 23 are located on opposite sides of the ink ejection regions 25, 25', and when the heating element 5 is provided with two sets of inputs The first input end 52 and the first output end 53 are respectively located on opposite sides of the first ink ejection area 55 of the heating element 5, and the second input end 56 and the second output end 57 are also located at the output end. Two opposite sides of the two ink ejection regions 55' (as shown in the seventh diagram (a)). When the number of heating plates of the heating element 3 is an even number (as shown in the fourth and fifth figures), the input end 32 and the output end 33 are located on the same side of the ink ejection regions 35, 35', and when the heating element 4 is provided When there are two sets of input/output terminals, the first input end 42 and the first output end 43 are located on the same side of the first ink ejection area 45, and the second input end 46 and the second output end 47 are located in the second side. The same side of the ink-ejection area 45', and the first input end 42, the first output end 43, the second input end 46, and the second output end 47 correspond to each other. It should be understood from the above description that in this case, a heating element having a regular quadrilateral ink-jet area can be disposed by a plurality of heating plates having substantially the same length, width and thickness (as shown in the second (a) and fourth figures). In addition, it is also possible to use a different shape of the heating plate to configure an approximately octagonal ink-jet area (as shown in the third, fifth, sixth (a) and seventh (a)), or A heating plate of different widths is used to change different heating elements (as shown in Figure 7 (a)). In addition, the heating element of the present invention may also be provided with two sets of input/output terminals for conducting different circuit paths by using different data control signals, so that the power signal warms all or part of the heating plates via one set of input/output terminals, In order to select the number of heating plates to be heated, the volume of the thermal bubbles of the ink micro 1323511 can be adjusted. In summary, the heating element applied to the thermal bubble type inkjet head of the ink jet printer utilizes a plurality of heating plates through the conductive layer in series to greatly increase the resistance value of the heating element, thereby effectively driving the inkjet. In the power range, the heating element of the inkjet head can be driven to emit ink with a small operating current. In other words, when the same printer power supply is provided, the present invention can drive more heating elements to improve the spraying than the conventional technology. The ink frequency and the spray point that can be ejected per unit time.

In addition, the heating plate of the heating element of the present invention can be made of a known material, so that it is not necessary to find a material with a high resistivity, and the stability of the ink jet head is not affected by the change of the material of the heating plate. Furthermore, by arranging two sets of input/output terminals on the heating element to control the heating of all or part of the heating plates, a single heating element can be used to change the micro-thermal bubbles of different sizes of the ink, thereby knowing that the heating element of the present invention Not only can the various types of conventional heating elements be improved, but the application of the heating elements of the ink jet head can be further improved. Therefore, this case is of great industrial value and has indeed met the requirements of the invention patent. The present invention has been described in detail by the above-described embodiments, and may be modified by those skilled in the art, without departing from the scope of the appended claims. 19 1325371 [Simple description of the drawing] The first figure is a heating element of the thermal bubble type inkjet head. =- Figure (4) - It is the heating element of the preferred embodiment of the present invention: the first figure (b). This is the circuit diagram of the second figure (a) of the present case. Second Figure is a schematic view of a heating element of a second preferred embodiment of the present invention. Figure 4 is a schematic view of the heating element of the third preferred embodiment of the present invention. Fig. 5 is a schematic view showing the heating element of the fourth preferred embodiment of the present invention. Figure 6 (a): is a schematic view of a heating element of a fifth preferred embodiment of the present invention. Figure 6 (b): This is the circuit diagram of the sixth diagram (a). Figure 7 (a): is a schematic view of a heating element of a sixth preferred embodiment of the present invention. Figure 7 (b): This is the circuit diagram of Figure 7 (a).

20 1325371 [Description of main component symbols] Bu 2, 3, 4, 5 Heating elements 、 , 211-213 , 211 ' , 213 ' , 311-314 , 311 , 314 , 411-414 , 511-513 Heating plate 12 , 24, 34, 44, 54 conductive layers 20, 30, 40, 50 gaps 22, 32, Ain inputs 23, 33, Aout outputs 25, 25', 35, 35' inkjet regions 42, 52, Ain An input terminal 43, 53, Aout a first output 45, 55 a first ink ejection region 45? '555 a second ink ejection region 46, 56, Bin a second input 47, 57, Bout a second output 461 '462 , 471, 472, 561, 562 ' 571, 572 Contact R1, R2, R3, R4 Resistor P Power signal D Data control signal M Switching element G Ground terminal PI First power signal P2 Second power signal D1 First data control Signal D2 second data control signal M1 first switching element M2 second switching element 21

Claims (1)

1325371 ^· / Month 13⁄4 Revision 10, the scope of patent application: ' 1. A heating element, suitable for an inkjet head structure, comprising a plurality of heating plates, the plurality of heating plates are separated and arranged in parallel and transmitted through a conductive The layers are electrically connected in series to form an ink-jet region, and the heating plates of the two terminals are electrically connected to an input end and an output end, respectively. 2. The heating element of claim 1, wherein two adjacent heating plates are separated by a gap. 3. The heating element of claim 1, wherein the ink ejection region is substantially a regular quadrilateral, and the plurality of heating plates are substantially rectangular in area. 4. The heating element according to claim 1, wherein the ink-jet area is substantially a regular octagon, and the area of the heating plate opposite to the two terminals electrically connected to the input end and the output end is substantially The upper system is smaller than the remaining area of the heating plate to avoid the hot spot offset of the heating element. 5. The heating element of claim 1, wherein when the number of the heating plates is an odd number, the input end and the output end are located on opposite sides of the ink ejection area. 6. The heating element of claim 1, wherein when the number of the heating plates is an even number, the input end and the output end are located on the same side of the ink ejection area. 7. The heating element of claim 1, wherein the heating element comprises a plurality of resistors connected in series, one end of which is connected to the input terminal for receiving a power signal, and the other end is connected to the output terminal A switching element 22 1325371 / month * repair *) the 拽 page is connected, and the switching element is used to control the conduction of the heating element circuit. 8. A heating element, suitable for an ink jet head structure, comprising: a plurality of heating plates, the plurality of heating plates are separated and juxtaposed and electrically connected in series through a conductive layer; a first input And a first output end connected to the opposite ends of the plurality of heating plates, and the heating plate included between the first input end and the first output end defines a first spray An ink region; and a second input end and a second output end are coupled to the conductive layer, and the heating plate included between the second input end and the second output end defines a The second ink ejection area. 9. The heating element of claim 8, wherein two adjacent heating plates are separated by a gap. 10. The heating element of claim 8, wherein when the number of the heating plates is an odd number, the first input end and the first output end are located on opposite sides of the first ink ejection area, and The second input end and the second output end are also located on opposite sides of the second ink ejection area. 11. The heating element of claim 8, wherein when the number of the heating plates is an even number, the first input end and the first output end are located on the same side of the first ink ejection area, and the The second input end and the second output end are located on the same side of the second ink ejection area, and the first input end, the first output end, the second input end, and the second output end correspond to each other. 12. The heating element of claim 8, wherein the heating element comprises a plurality of resistors connected in series, one end of which is connected to the first input end for receiving a first power signal, and the other end is transparent The first output 23 1325371 9 淖 / month call is more) the replacement page end is connected to a first switching element, and a portion of the plurality of resistors are connected at one end to the second input end for receiving a second The other end of the power supply signal is connected to a second switching element through the second output end, and the first switching element and the second switching element are used to control a conduction path of the heating element circuit. 13. The heating element of claim 12, wherein the number of resistors connected in series between the first input end and the first output end is greater than between the second input end and the second output end The number of resistors. 14. The heating element of claim 8 wherein the first ink jet region is substantially larger than the second ink jet region. twenty four