CN1968820B - Thermal head and manufacturing method thereof - Google Patents
Thermal head and manufacturing method thereof Download PDFInfo
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- CN1968820B CN1968820B CN2005800197752A CN200580019775A CN1968820B CN 1968820 B CN1968820 B CN 1968820B CN 2005800197752 A CN2005800197752 A CN 2005800197752A CN 200580019775 A CN200580019775 A CN 200580019775A CN 1968820 B CN1968820 B CN 1968820B
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Abstract
A board (1) of a thermal head (A) is provided with a heat element (5), a common electrode (3) and a separate electrode (4) for carrying electricity to the heat element (5), and a double layer structure protecting layer (6) formed on the heat element (5) to cover at least the heat element. A second protecting layer (6B) constituting the upper layer of the protecting layer (6) has conductivity, and a first protecting layer (6A) constituting the lower layer of the protecting layer (6) has a thickness (t1) which is three times the thickness (t2) of the second protecting layer (6B) or more.
Description
Technical field
The present invention relates to thermal printer head and manufacture method thereof as the component parts use of thermal printer.
Background technology
Fig. 7 is the figure of the existing example of expression thermal printer head.In this thermal printer head B, on insulating properties substrate 91, be formed with the enamel layer 92 that constitutes by glass etc.On enamel layer 92, be formed with electrode 93 and heating resistor 95.On heating resistor 95 and electrode 93, by printing, burn till amorphous glass and be formed with protective layer 96, to cover heating resistor and electrode.
When using thermal printer head B to print to handle, configuration platen roller P on the position relative with heating resistor 95.In print processing, utilizing platen roller P will be pressed on as the electrothermal sensitive recording paper S of print media under the state on the protective layer 96, for example, mobile electrothermal sensitive recording paper S on the sub scanning direction of delegation.Then, the heat that heating resistor 95 sends is passed to electrothermal sensitive recording paper S by protective layer 96, makes it existing look, thereby prints.Below, alternatively carry out repeatedly along the moving recording paper S of delegation and utilize thermal printer head B to print processing, thereby record-paper S is carried out whole print processing.
In utilizing the print processing of thermal printer head, the situation that causes the so-called phenomenon that adheres to is arranged.The so-called adhesion is that electrothermal sensitive recording paper is attached on the surface of protective layer, makes the irregular phenomenon of the conveying change of electrothermal sensitive recording paper.By this adhesion is cause, has on electrothermal sensitive recording paper the bad phenomenon of printing that produces white muscle etc.
As the method for eliminating this adhesion, consider the surface smoothing that can make protective layer, reduce the frictional resistance that produces between electrothermal sensitive recording paper and the protective layer.For example, with regard to above-mentioned existing thermal printer head B because the surface smoothing of amorphous glass is good, when printing treatment, with amorphous glass use with the protective layer 96 of record-paper crimping in, realize the inhibition that adheres to.
As using amorphous glass to suppress another existing example of the thermal printer head of adhesion, as shown in Figure 8, protective layer 96 is made of the double-decker that the different types of first protective layer 96A and the second protective layer 96B are overlapped.In this thermal printer head B ', the first protective layer 96A of the lower layer side in two-layer is made by the good sintered glass ceramics of wearability, and the second protective layer 96B of upper layer side is made by the good amorphous glass of flatness.The thermal printer head B ' that represents in Fig. 8 is owing to be provided with the first good protective layer 96A of wearability at the downside with the second protective layer 96B of record-paper S crimping, so the thermal printer head B that the Fig. 7 that compares represents can improve the wearability of protective layer 96.
Yet when utilizing thermal printer head to print processing, owing to being pressed in electrothermal sensitive recording paper on the protective layer and carrying out conveyance, electrothermal sensitive recording paper becomes big to the applying power of protective layer.In addition, the heat of being sent by heating resistor can be softened the composition of protective layer or electrothermal sensitive recording paper sometimes, and in this case, applying power becomes bigger.
If though make the surface smoothing of protective layer; reduce frictional resistance as much as possible; then than being easier to peel off the electrothermal sensitive recording paper that is attached on the protective layer; if but the protective layer of the thermal softening that produces by the applying power that produces by platen and by heating resistor or the composition of electrothermal sensitive recording paper; protective layer and electrothermal sensitive recording paper are close to; then since the frictional resistance on protective layer surface reduce, sometimes can not be reliably with electrothermal sensitive recording paper from the protective layer surface isolation.At existing thermal printer head B, among the B ', owing to utilize amorphous glass, can make the surface smoothingization with the protective layer 96 or the second protective layer 96B of electrothermal sensitive recording paper crimping as much as possible, so can not suppress the generation that adheres to sometimes well.
Other method as suppressing to adhere to also has the method that reduces the power on the protective layer that electrothermal sensitive recording paper is pressed on.But if utilize this method, heat just can not be passed on the electrothermal sensitive recording paper well, the problem of the quality reduction that causes printing.
Patent documentation 1: Japanese kokai publication sho 63-74658 communique.
Patent documentation 2: TOHKEMY 2001-47652 communique.
Summary of the invention
The present invention proposes in view of the above problems.The object of the present invention is to provide the generation that can suppress to adhere to, the thermal printer head that improves the quality of printing.
The thermal printer head that first aspect present invention provides; on substrate, have heating resistor, to the switch on electrode of usefulness and cover the double-deck protective layer of above-mentioned heating resistor at least of this heating resistor; it is characterized in that: second protective layer that constitutes the upper strata of above-mentioned protective layer has electric conductivity, and the thickness of first protective layer that constitutes the lower floor of above-mentioned protective layer has the thickness more than 3 times of the thickness of above-mentioned second protective layer.
The thickness of preferred above-mentioned first protective layer is 2 μ m～13 μ m.
A second aspect of the present invention provides a kind of manufacture method of thermal printer head; it is the manufacture method of the described thermal printer head of first aspect; it is characterized in that: above-mentioned first protective layer forms by burning till glass, and above-mentioned second protective layer forms by burning till the glass that is added with conductive compositions by the low firing temperature of softening temperature than the glass of above-mentioned first protective layer.
A third aspect of the present invention provides a kind of manufacture method of thermal printer head; it is the manufacture method of the described thermal printer head of first aspect; it is characterized in that: above-mentioned first protective layer forms by burning till amorphous glass; above-mentioned second protective layer is by by at 30 ℃ of softening temperatures that is lower than this sintered glass ceramics firing temperature to the scope of 50 ℃ of the softening temperatures that is higher than this sintered glass ceramics, burns till the sintered glass ceramics that is added with conductive compositions and forms.
The softening temperature that is preferably formed the above-mentioned first protective layer used above-mentioned amorphous glass is the low temperature more than 50 ℃ of firing temperature than above-mentioned second protective layer.
The softening temperature that is preferred for the above-mentioned amorphous glass of above-mentioned first protective layer is the low temperature more than 50 ℃ of softening temperature than above-mentioned sintered glass ceramics.
The sintering temperature of preferred above-mentioned first protective layer and the firing temperature of above-mentioned second protective layer are roughly the same.
A fourth aspect of the present invention provides a kind of manufacture method of thermal printer head; it is to have heating resistor on substrate; to the switch on electrode of usefulness of this heating resistor; at least cover the manufacture method of thermal printer head of the double-deck protective layer of above-mentioned heating resistor; it is characterized in that: by burning till first protective layer that amorphous glass forms the lower floor that constitutes above-mentioned protective layer; by by at 30 ℃ of softening temperatures that is lower than this sintered glass ceramics firing temperature to the scope of 50 ℃ of the softening temperatures that is higher than this sintered glass ceramics; burn till sintered glass ceramics, form second protective layer on the upper strata that constitutes above-mentioned protective layer.
The softening temperature that is preferably formed the above-mentioned first protective layer used above-mentioned amorphous glass is the low temperature more than 50 ℃ of firing temperature than above-mentioned second protective layer.
The softening temperature of preferred above-mentioned amorphous glass is the low temperature more than 50 ℃ of softening temperature than above-mentioned sintered glass ceramics.
The sintering temperature of preferred above-mentioned first protective layer and the firing temperature of above-mentioned second protective layer are roughly the same.
A fourth aspect of the present invention provides a kind of thermal printer head, it is characterized in that: utilize in the 8th to the tenth aspect each described manufacture method to make this kind thermal printer head.
Description of drawings
Fig. 1 is the major part plane of an example of expression thermal printer head of the present invention.
Fig. 2 is the sectional view along the II-II line of Fig. 1.
Fig. 3 is the major part sectional view of an example of the method for expression manufacturing thermal printer head of the present invention.
Fig. 4 is the major part sectional view of an example of the method for expression manufacturing thermal printer head of the present invention.
Fig. 5 is the major part sectional view of an example of the method for expression manufacturing thermal printer head of the present invention.
Fig. 6 is the major part plane of the example of expression another thermal printer head of the present invention.
Fig. 7 is the major part sectional view of the existing thermal printer head of expression.
Fig. 8 is the major part sectional view of other examples of the existing thermal printer head of expression.
The specific embodiment
Below, with reference to accompanying drawing, specifically describe embodiments of the invention.
Fig. 1 and Fig. 2 are the figure of an example of expression thermal printer head of the present invention.The thermal printer head A of first embodiment comprises substrate 1, enamel layer 2, common electrode 3, a plurality of single electrode 4, heating resistor 5 and protective layer 6.In addition, in Fig. 1, omit the explanation of protective layer 6.
If utilize the outer drive IC of figure selectively to single electrode 4 energisings, then the zone 50 of being clamped by extension 3a adjacent to each other in the heating resistor 5 (for example the hatching of Fig. 1 represent part) heating forms 1 heat generating spot.
Below, with reference to Fig. 3～Fig. 5, an example of the manufacture method of thermal printer head of the present invention is described.
Fig. 3 is illustrated in the major part sectional view that forms the state of enamel layer 2, common electrode 3, single electrode 4 and heating resistor 5 on the substrate 1.At first, as shown in Figure 3, prepare the substrate 1 that lamination is formed with enamel layer 2, common electrode 3, single electrode 4 and heating resistor 5.Form enamel layer 2 by printing, burn till the glass paste.For example, by printing, burn till the golden paste of resinate (resinate) (paste), utilizing photolithographic etching to remove unwanted part, form common electrode 3 and single electrode 4.For example, form heating resistor 5 by printing, burn till the ruthenium-oxide paste.
Below, as shown in Figure 4, form the first protective layer 6A, to cover common electrode 3, single electrode 4 and heating resistor 5.The first protective layer 6A is by printing, burning till with SiO
2, B
2O
3, PbO is that the amorphous glass paste of main component forms.
The softening temperature of above-mentioned amorphous glass is 680 ℃.Forming the firing temperature (hereinafter referred to as " first firing temperature ") that the first protective layer 6A uses is 760 ℃.Because first firing temperature (760 ℃) is the high 80 ℃ temperature of softening temperature (680 ℃) than above-mentioned amorphous glass, so when burning till, the viscosity of above-mentioned amorphous glass diminishes, it is very big that its flowability becomes.As a result, the bubble collapse of inherence in the above-mentioned amorphous glass, the first protective layer 6A of formation good airproof performance.
Below, as shown in Figure 5, on the first protective layer 6A, form the second protective layer 6B.The second protective layer 6B is by printing, burning till with SiO
2, ZrO, CaO be that the sintered glass ceramics paste of main component forms.
The softening temperature of above-mentioned sintered glass ceramics is 785 ℃.Forming the firing temperature (hereinafter referred to as " second firing temperature ") that the second protective layer 6B uses is 760 ℃.The second protective layer 6B is made of sintered glass ceramics, and second firing temperature (760 ℃) is near the temperature of softening temperature (785 ℃) of above-mentioned sintered glass ceramics.When burning till, because crystallised component suppresses flowing of above-mentioned sintered glass ceramics, so the bubble of inherence is remaining in the above-mentioned sintered glass ceramics, it becomes space part.As a result, the second protective layer 6B becomes the porous matter shape with a plurality of space parts.
Because the softening temperature (680 ℃) of the amorphous glass that the formation first protective layer 6A uses is the temperature than low 80 ℃ of second firing temperature (760 ℃); so when burning till the second protective layer 6B; the first protective layer 6A is fully softening, with the close property raising of the second protective layer 6B.In addition, according to first embodiment, because first firing temperature and second firing temperature are roughly the same, so when forming the first protective layer 6A and the second protective layer 6B, unnecessary change firing temperature.
In this manufacture method, second firing temperature is the temperature with respect to low 25 ℃ of the softening temperature that forms the sintered glass ceramics that the second protective layer 6B uses.So when burning till the second protective layer 6B, crystallised component suppresses flowing of bulk glass, the viscosity of above-mentioned sintered glass ceramics diminishes.Thus, the second protective layer 6B forms the size of space part or the porous matter shape that is more evenly distributed of layer all space part.In addition, as making the second protective layer 6B form second firing temperature that porous matter shape is used, the temperature that also can hang down 30 ℃ at the softening temperature with respect to sintered glass ceramics is to the temperature range of the temperature high 50 ℃ with respect to the softening temperature of sintered glass ceramics.
Because the second protective layer 6B is formed porous matter shape, the surface of the second protective layer 6B forms the concavo-convex shape of the second protective layer 96B than existing thermal printer head B '.Thus, compare, peel off the electrothermal sensitive recording paper that when typewriting is handled, is close on the thermal printer head A easily, can suppress the generation that adheres to well with existing thermal printer head B '.In addition because the second protective layer 6B is porous matter shape, even when print processing since with the sliding-contact of electrothermal sensitive recording paper, abrasion are arranged slightly, still can keep the concavo-convex of the second protective layer 6B surface, so can keep the inhibition effect of adhesion rightly.
According to above-mentioned manufacture method, because the processing of burning till by the second protective layer 6B, its surface forms concavo-convex, again because after forming the second protective layer 6B, its surface becomes concavo-convex, so do not need to append other operation such as for example blasting treatment.So, can utilize with the same operation of existing operation and obtain thermal printer head A.Therefore, utilize above-mentioned manufacture method, can suppress to cause this rising.In addition, adopt above-mentioned manufacture method, owing to can suitably suppress to adhere to,,, can not cause the reduction of print quality so the electrothermal sensitive recording paper when not needing to reduce print processing is pressed in the power on the protective layer 6 again owing to improved and prevent the reliability that adheres to.
As above-mentioned first embodiment, be that then when burning till the second protective layer 6B, the first protective layer 6A is fully softening than the low temperature more than 50 ℃ of second firing temperature if form the softening temperature of the amorphous glass that the first protective layer 6A uses.Thus, the close property of the first protective layer 6A and the second protective layer 6B improves.Therefore, during print processing, can suppress the problem that the second protective layer 6B peels off from the first protective layer 6A, also can improve the durability of thermal printer head A.
As above-mentioned first embodiment; if form the softening temperature of the amorphous glass that the first protective layer 6A uses and be than the low temperature more than 50 ℃ of softening temperature that forms the sintered glass ceramics that the second protective layer 6B uses; even then second firing temperature is set at the temperature below the softening temperature of the second protective layer 6B; when burning till the second protective layer 6B, also can make the first protective layer 6A fully softening.Therefore,, manufacturing cost can be controlled, the close property of the first protective layer 6A and the second protective layer 6B can be improved by setting second firing temperature low.
According to above-mentioned first embodiment, because first firing temperature and second firing temperature are roughly the same, can make the temperature treatment of manufacturing process simple, the result, the productivity ratio of thermal printer head A improves.
In the present invention, for example, as forming the first protective layer used amorphous glass or form the second protective layer used sintered glass ceramics, can be chosen in the constituent represented among above-mentioned first embodiment or the glass beyond the physics value.In addition, can suitably change first and second firing temperatures, so that make it corresponding with selected amorphous glass or sintered glass ceramics.
Yet; in the print processing of utilizing thermal printer head to carry out; owing under the state on the protective layer that electrothermal sensitive recording paper is pressed in thermal printer head, move it; generally; the contact friction meeting of protective layer and temperature-sensitive record paper produces static; this static increases the power of being close to of thermal printer head and electrothermal sensitive recording paper, to preventing to be stained with adverse effect.
Constituting by double-decker in the thermal printer head of existing protective layer,, utilizing insulating materials to form first protective layer of the downside of protective layer, utilizing conductive material to form second protective layer of upside in order to remove the static that between protective layer and electrothermal sensitive recording paper, produces.In such thermal printer head, can avoid by protective layer with static discharge and causing destroy heating resistor, produce the problem that can not generate heat, simultaneously, can reduce adverse effect to preventing to adhere to.
Therefore, under the situation of the protective layer that is made of thermal printer head double-decker, first protective layer of preferred protective layer downside is the layer with insulating properties, and second protective layer of protective layer upside is the layer with electric conductivity.Yet, have first protective layer of insulating properties in formation after, form thereon when having second protective layer of electric conductivity, first protective layer is softening, the conductive compositions of second protective layer can diffuse in first protective layer of downside sometimes.When causing the diffusion of such conductive compositions, the bubble that exists around conductive compositions also spreads in insulating barrier, and the sealing of heating resistor reduces.As a result, the problem of the lost of life of thermal printer head the deterioration of heating resistor appears promoting.
Here,,, suppress the reduction of the sealing that causes to the diffusion of the first protective layer 6A (lower floor) from the second protective layer 6B (upper strata) owing to conductive compositions, can prolong the life-span of thermal printer head as protective layer with regard to another thermal printer head of the present invention.
Fig. 6 is the figure of an example of other thermal printer heads of expression the present invention.
The double-decker of the protective layer 6 of second embodiment for constituting by the first protective layer 6A and the second protective layer 6B with electric conductivity.The thickness t 1 of the first protective layer 6A is more than three times of thickness t 2 of the second protective layer 6B.Enumerate an example in these concrete numerical value, thickness t 1 is 7 μ m, and thickness t 2 is 2 μ m.
Below, an example of the manufacture method of this thermal printer head is described.Since the manufacture method of this thermal printer head and the first protective layer 6A by amorphous glass constitute, the second protective layer 6B is roughly the same by the manufacture method of the thermal printer head that sintered glass ceramics constitutes, so in the following description, referring again to Fig. 3～Fig. 5.In addition, when reference Fig. 5, the thickness of the second protective layer 6B is below 1/3 of thickness of the first protective layer 6A.
At first, shown in 3 figure, prepare the substrate 1 that lamination is formed with enamel layer 2, common electrode 3, single electrode 4 and heating resistor 5.
Secondly, as shown in Figure 4, form the first protective layer 6A, to cover common electrode 3, single electrode 4 and heating resistor 5.The first protective layer 6A is by printing, burning till with SiO
2, PbO is that the amorphous glass paste of main component forms.The softening temperature of above-mentioned amorphous glass is for example 745 ℃.Form the firing temperature (hereinafter referred to as " firing temperature of the first protective layer 6A ") that the first protective layer 6A uses and be for example 800 ℃.
Because the firing temperature (800 ℃) of the first protective layer 6A is the high 55 ℃ temperature of softening temperature (745 ℃) than above-mentioned amorphous glass, so when burning till, the viscosity of above-mentioned amorphous glass diminishes, it is enough big that its flowability becomes.As a result, the bubble collapse of above-mentioned amorphous glass inherence, the first protective layer 6A of formation good airproof performance.
Secondly, as shown in Figure 5, on the first protective layer 6A, form the second protective layer 6B.The second protective layer 6B by printing, burn till with PbO, B
2O
3, SiO
2For example having added in the amorphous glass for main component, the conductive glass paste of the conductive compositions of ruthenium-oxide etc. forms.
The softening temperature that forms the amorphous glass of the second protective layer 6B is for example 590 ℃.Form the firing temperature (hereinafter referred to as " firing temperature of the second protective layer 6B ") that the second protective layer 6B uses and be for example 680 ℃.The firing temperature of the second protective layer 6B (680 ℃) is the temperature than low 65 ℃ of the softening temperature (745 ℃) of the amorphous glass that forms the first protective layer 6A.Therefore, when burning till the second protective layer 6B, the first protective layer 6A is softening hardly, and the conductive compositions that can suppress effectively to contain among the second protective layer 6B spreads in the first conductive layer 6A, can suppress the reduction of the sealing of heating resistor 5 effectively.Therefore, can suitably keep original function, the life-span of thermal printer head A is prolonged as the first protective layer 6A of the insulation protection of heating resistor 5.
Because the firing temperature of the second protective layer 6B is the high 90 ℃ temperature of softening temperature (590 ℃) than the amorphous glass that forms the second protective layer 6B; so when burning till the second protective layer 6B; the second protective layer 6B is fully softening, with the close property raising of the first protective layer 6A.
In the thermal printer head A of second embodiment, the thickness t 1 of the first protective layer 6A is more than 3 times of thickness t 2 of the second protective layer 6B, is very big.Therefore, when forming the second protective layer 6B, even conductive compositions spreads to the first protective layer 6A, to the also almost not influence of sealing of heating resistor 5.
Specifically, different with above-mentioned manufacture method, the firing temperature of the second protective layer 6B than the high situation of the softening temperature of the glass that forms the first protective layer 6A under, when burning till the second protective layer 6B, the first protective layer 6A is softening, mobilely becomes big.Like this, the conductive compositions that comprises among the second protective layer 6B is crossed the border of the second protective layer 6B and the first protective layer 6A sometimes, spreads in the first protective layer 6A.In this case; because it is very big that the thickness t 1 of the first protective layer 6A is compared with the thickness t 2 of the second protective layer 6B; so the diffusion of conductive compositions rests on the top in the first protective layer 6A, in more than half zone on the top in removing the first protective layer 6A, does not have the diffusion of conductive compositions.Therefore, can suitably keep the original function of the first protective layer 6A, the life-span of thermal printer head A is prolonged as the insulation protection of heating resistor 5.
In addition; in order to form the second protective layer 6B and to burn till; the same with above-mentioned manufacture method; the firing temperature of the second protective layer 6B than the low situation of the softening temperature of the glass that forms the first protective layer 6A under; as mentioned above, can suppress the diffusion of conductive compositions effectively to the first protective layer 6A.As a result,, prolonged in the life-span of thermal printer head A owing to can suppress the reduction of the sealing of heating resistor 5 more effectively, more suitable.
But if the thickness t 1 of the first protective layer 6A is too little, then the thermo-responsive of 5 pairs of print media of heating resistor is good, but flying print.But abrasion is exposed heating resistor easily, and durability reduces.On the other hand, if the thickness t 1 of the first protective layer 6A is too big, then durability improves.But the thermo-responsive of heating resistor 5 is poor, then has to reduce print speed or can not suitably print.Therefore, the thickness t 1 of the preferred first protective layer 6A is 2 μ m～13 μ m.If the thickness t 1 of the first protective layer 6A is set in this scope, then have suitable durability, can realize flying print simultaneously.
Because the second protective layer 6B contains conductive compositions, the static that produces in the time of therefore can not having print processing, and effectively with its derivation.Because the second protective layer 6B comprises conductive compositions, mechanical strength is good, compares with the situation that does not contain conductive compositions, and abrasion performance is good.If the thickness t 2 of the second protective layer 6B is too little, the abrasion performance that can not obtain stipulating then, and with the close property variation of the first protective layer 6A, be easy to generate peeling off or fragment of the second protective layer 6B.Therefore, the thickness t 2 of the preferred second protective layer 6B is 0.5 μ m～4 μ m.If the thickness t 2 of the second protective layer 6B is set in this scope, then can suitably guarantee wearability and with the close property of the first protective layer 6A.
In addition; in the second protective layer 6B; as conductive compositions; the ruthenium-oxide particle that with particle diameter is 0.001～1 μ m is added under the situation in the conductive glass paste with the weight % ratio 0.3～30wt% with respect to the conductive glass paste; when burning till the second protective layer 6B, conductive compositions can suppress flowing of glass ingredient.So, around conductive compositions, produce bubble, become space part.As a result, the second protective layer 6B forms porous matter shape.
Like this, the second protective layer 6B is a porous matter shape, and upper surface is concavo-convex, when print processing, produces many gaps on the border of the second protective layer 6B and typewriting medium, and its close property is suppressed.Therefore, the feeding of print media is carried out reposefully, and is very appropriate, and as mentioned above, also effective aspect the inhibition adhesion.Therefore, if use sintered glass ceramics, the glass as forming the second protective layer 6B utilizes the manufacture method of the first above-mentioned embodiment to form the second protective layer 6B, and then this second protective layer 6B becomes more uniform porous matter shape, is more suitable for suppressing to adhere to.
In the present invention, the thickness of first protective layer and second protective layer also can not be the scope shown in above-mentioned second embodiment, as long as the thickness of first protective layer is the thickness of second protective layer more than 3 times, just can suitably change.The form of enamel layer except the plane form shown in the above-described embodiments, also can be the form with part of protuberance.In addition, also can be the thermal printer head kind of film-type or thick-film type.
Claims (12)
1. thermal printer head; it has heating resistor, this heating resistor is switched on the electrode of usefulness and covered described heating resistor at least on substrate protective layer; described protective layer has double-decker; lower floor is first protective layer; the upper strata is second protective layer, and this thermal printer head is characterised in that:
Described second protective layer is the porous layer with electric conductivity, and described first protective layer is made of amorphous glass, and described first protective layer has the thickness of thickness more than 3 times of described second protective layer.
2. thermal printer head as claimed in claim 1 is characterized in that:
The thickness of described first protective layer is 2 μ m～13 μ m.
3. the manufacture method of a thermal printer head is the manufacture method of the described thermal printer head of claim 1, it is characterized in that:
Described first protective layer forms by burning till amorphous glass, and described second protective layer forms by pressing the low firing temperature of softening temperature than the amorphous glass of described first protective layer, burn till the glass that is added with conductive compositions.
4. the manufacture method of a thermal printer head is the manufacture method of the described thermal printer head of claim 1, it is characterized in that:
Described first protective layer forms by burning till amorphous glass; described second protective layer forms by burning till the sintered glass ceramics that is added with conductive compositions, by burning till at 30 ℃ of softening temperatures that is lower than described sintered glass ceramics to the firing temperature in the scope of 50 ℃ of the softening temperatures that is higher than described sintered glass ceramics.
5. the manufacture method of thermal printer head as claimed in claim 4 is characterized in that:
The softening temperature that forms the described first protective layer used described amorphous glass is the temperature lower than the firing temperature of described second protective layer, and the temperature difference of the firing temperature of the softening temperature of described amorphous glass and described second protective layer is more than 50 ℃.
6. the manufacture method of thermal printer head as claimed in claim 5 is characterized in that:
The softening temperature that is used for the described amorphous glass of described first protective layer is the temperature lower than the softening temperature of described sintered glass ceramics, and the temperature difference of the softening temperature of described amorphous glass and the softening temperature of described sintered glass ceramics is more than 50 ℃.
7. as the manufacture method of claim 5 or 6 described thermal printer heads, it is characterized in that:
The firing temperature of the firing temperature of described first protective layer and described second protective layer is roughly the same.
8. the manufacture method of a thermal printer head; this thermal printer head has heating resistor on substrate, the electrode that this heating resistor is switched on and the protective layer that covers described heating resistor at least; described protective layer has double-decker; lower floor is first protective layer; the upper strata is second protective layer, and the manufacture method of this thermal printer head is characterised in that:
Form described first protective layer by burning till amorphous glass,
Form described second protective layer by burning till sintered glass ceramics, by burning till at 30 ℃ of softening temperatures that is lower than described sintered glass ceramics to the firing temperature in the scope of 50 ℃ of the softening temperatures that is higher than described sintered glass ceramics.
9. the manufacture method of thermal printer head as claimed in claim 8 is characterized in that:
The softening temperature that forms the described first protective layer used described amorphous glass is the temperature lower than the firing temperature of described second protective layer, and the temperature difference of the firing temperature of the softening temperature of described amorphous glass and described second protective layer is more than 50 ℃.
10. the manufacture method of thermal printer head as claimed in claim 9 is characterized in that:
The softening temperature of described amorphous glass is the temperature lower than the softening temperature of described sintered glass ceramics, and the temperature difference of the softening temperature of described amorphous glass and the softening temperature of described sintered glass ceramics is more than 50 ℃.
11. the manufacture method as claim 9 or 10 described thermal printer heads is characterized in that:
The firing temperature of the firing temperature of described first protective layer and described second protective layer is roughly the same.
12. a thermal printer head is characterized in that:
Utilize in the claim 8～10 each described manufacture method to make this thermal printer head.
Applications Claiming Priority (5)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2004176488A JP4367771B2 (en) | 2004-06-15 | 2004-06-15 | Thermal head |
| JP176488/2004 | 2004-06-15 | ||
| JP2004176489A JP3819921B2 (en) | 2004-06-15 | 2004-06-15 | Thermal head and manufacturing method thereof |
| JP176489/2004 | 2004-06-15 | ||
| PCT/JP2005/010784 WO2005123400A1 (en) | 2004-06-15 | 2005-06-13 | Thermal head and manufacturing method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1968820A CN1968820A (en) | 2007-05-23 |
| CN1968820B true CN1968820B (en) | 2011-09-14 |
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ID=35769827
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2005800197752A Active CN1968820B (en) | 2004-06-15 | 2005-06-13 | Thermal head and manufacturing method thereof |
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|---|---|
| JP (1) | JP4367771B2 (en) |
| CN (1) | CN1968820B (en) |
Families Citing this family (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4717689B2 (en) * | 2006-04-12 | 2011-07-06 | ローム株式会社 | Heating body and manufacturing method thereof |
| JP4584882B2 (en) * | 2006-08-04 | 2010-11-24 | ローム株式会社 | Thick film thermal print head |
| JP4912475B2 (en) * | 2010-01-29 | 2012-04-11 | アオイ電子株式会社 | Thermal head |
| JP5825778B2 (en) * | 2010-12-10 | 2015-12-02 | ローム株式会社 | Thermal print head |
| CN103328223B (en) * | 2011-01-25 | 2015-04-22 | 京瓷株式会社 | Thermal head, and thermal printer equipped with same |
| JP6247674B2 (en) * | 2015-10-13 | 2017-12-13 | ローム株式会社 | Thermal print head |
| CN108656757B (en) * | 2017-03-28 | 2020-07-10 | 罗姆股份有限公司 | Thermal print head |
| JP6467480B2 (en) * | 2017-10-04 | 2019-02-13 | ローム株式会社 | Thermal print head |
| CN114379238B (en) * | 2021-07-02 | 2023-02-28 | 山东华菱电子股份有限公司 | Energy-resistant, corrosion-resistant and wear-resistant thermosensitive printing head heating substrate |
| CN114368224B (en) * | 2021-07-02 | 2023-03-21 | 山东华菱电子股份有限公司 | Energy-resistant and corrosion-resistant heating substrate for thermal printing head |
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| CN1087860A (en) * | 1992-02-17 | 1994-06-15 | 罗沐股份有限公司 | Thermal printer head |
| CN1324304A (en) * | 1998-10-22 | 2001-11-28 | 罗姆股份有限公司 | Thick-film thermal print head and its manufacturing method |
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|---|---|---|---|---|
| CN1087860A (en) * | 1992-02-17 | 1994-06-15 | 罗沐股份有限公司 | Thermal printer head |
| CN1324304A (en) * | 1998-10-22 | 2001-11-28 | 罗姆股份有限公司 | Thick-film thermal print head and its manufacturing method |
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Also Published As
| Publication number | Publication date |
|---|---|
| JP2006001017A (en) | 2006-01-05 |
| JP4367771B2 (en) | 2009-11-18 |
| CN1968820A (en) | 2007-05-23 |
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