KR102637446B1 - Heater, fusing device, image forming device and heating device - Google Patents

Abstract

The purpose of the present invention is to provide a heater, a fixing device, an image forming device, a heating device, and a method of manufacturing the heater, which have excellent cracking properties even in a heater with a narrow width in the sweep direction, and are manufactured separately from the base 11 and the base phase. It is provided with a _plurality of resistance heating wires that receive power, and the resistance heating wires include at least three rows of horizontal wiring portions The vertical wiring portion Y connecting the sections is connected to form a sinuous shape, and at least one of the resistance heating wirings includes a second row horizontal wiring portion X ₂ , a first _row horizontal wiring portion Pattern P _{1 formed} shorter than _{the 3rd} row horizontal _{wiring part} have one or the other

Description

Heater, fusing device, image forming device and heating device

The present invention relates to heaters, fixing devices, image forming devices and heating devices. In detail, it relates to a heater provided with a plurality of resistance wires that generate heat when energized, a fixing device provided with such a heater, an image forming device, and a heating device.

As a heating means for performing heat treatment on an object, a heater equipped with a plurality of resistance heating wires that generate heat by applying electricity to the surface of a stainless steel plate or ceramic plate is known. Since such heaters can be formed thinly and compactly, for example, they are built into copiers and printers and used for the purpose of fixing toner or ink to recording media, or they are built into dryers to uniformly heat objects such as panels. It is used for the purpose of heating and drying. In these applications, the following Patent Documents 1 and 2 disclose heaters that can magnetically equalize the temperature distribution within the surface to be heated by arranging a plurality of resistance heat-generating wires on the heating surface of the heater.

International Publication No. 2013/073276 Pamphlet

Patent Document 1 discloses a heater constructed by electrically connecting resistance heating wires with a positive temperature coefficient of resistance in parallel. According to these heaters, since each resistance heat generation wiring has substantially the same heat generation characteristics, each resistance heat generation wiring can magnetically equalize the temperature distribution of each other. Therefore, according to the technology disclosed in Patent Document 1, higher level cracking becomes possible regardless of the position on the substrate.

Additionally, according to the technology in Patent Document 1, the parallel wiring of the heat generating wiring includes an inclined rectangular pattern. Therefore, the unformed portion of the wiring is inclined with respect to the long side direction or width direction of the heater, and does not cause a local temperature rise in the resistance heating wiring portion during use ([0023]).

In this way, the heater disclosed in Patent Document 1 is excellent in that it can perform excellent cracking.

In contrast, these days, heaters that maintain the above-mentioned cracks and are also compact are required. In particular, there is a growing demand for heaters with a narrower width in the sweep direction. However, if the heater disclosed in Patent Document 1 is simply reduced to have a narrower width in the sweep direction, the influence of the inclined patterns disposed on both sides of the unformed portion of the wiring increases, and there is a problem in that it becomes difficult to maintain cracks.

The present invention has been made in view of the above problems, and provides a heater having excellent cracking properties even for heaters with a narrow width in the sweep direction, a fixing device, an image forming device and a heating device having such a heater, and a method of manufacturing the heater. The purpose.

The present invention is as follows.

The heater according to claim 1 is a heater that heats the object to be heated by sweeping at least one of the object to be heated and the main heater in a sweep direction while facing the object,

Equipped with a body and a plurality of resistance heating wires on the body, each receiving power separately,

The resistance heating wiring has at least three rows of horizontal wiring portions arranged side by side in the sweep direction in the order of a first row, a second column, and a third column, and a vertical wiring portion connecting the horizontal wiring portions, and is sinuous. It is formed into a shape,

The point is that at least one of the resistance heating wirings has one of the patterns (P ₁ ) below or the patterns (P ₂ ) below.

(P ₁ ): A pattern in which the second row horizontal wiring part (X ₂ ) is formed shorter than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ).

(P ₂ ): A pattern in which the second row horizontal wiring part (X ₂ ) is formed longer than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ).

The heater according to claim 2 is the heater according to claim 1, comprising a resistance heating wiring having the pattern (P ₁ ) and resistance heating wiring on both sides of the resistance heating wiring having the pattern (P ₂ ), ,

The main point is that the resistance heating wiring having the pattern (P ₁ ) and the resistance heating wiring having the pattern (P ₂ ) are arranged adjacent to each other.

The heater according to claim 3 is the heater according to claim 1 or 2, wherein the resistance heating wiring is a first wiring (L ₁ ) and a second wiring (L ₂ ) in a width direction substantially perpendicular to the sweep direction. , the third wiring (L ₃ ), and the fourth wiring (L ₄ ) are arranged in that order, and includes at least four of the resistance heating wires,

A vertical wiring part (Y ₁₁₂ ) connecting the first row horizontal wiring part (X ₁₁ ) and the second row horizontal wiring part (X ₁₂ ) of the first wiring (L ₁ ), and the second wiring (L ₂ ) The vertical wiring portion (Y 212 ) connecting the first row horizontal wiring portion (X ₂₁ ) and the second row horizontal wiring portion (X ₂₂ ) has _an opposing location A facing each other with a gap,

A vertical wiring portion (Y ₂₂₃ ) connecting the second row horizontal wiring portion (X ₂₂ ) and the third row horizontal wiring portion (X ₂₃ ) of the second wiring (L ₂ ), and the third wiring (L ₃ ) The vertical wiring portion (Y ₃₂₃ ) connecting _{the second row horizontal wiring portion (X 32 )} and the third row horizontal wiring portion (

A vertical wiring part (Y ₃₁₂ ) connecting the first row horizontal wiring part (X ₃₁ ) and the second row horizontal wiring part (X ₃₂ ) of the third wiring (L ₃ ), and the fourth wiring (L ₄ ) The vertical wiring portion (Y ₄₁₂ ) connecting the first row horizontal wiring portion (X ₄₁ ) and _the second row horizontal wiring portion (

The sweep trace of the gap at the opposing point (B) is located between the sweep trace of the gap at the opposing point (A) and the sweep trace of the gap at the opposing point (C), and the sweep trace of the gap at the opposing point (C) The point is that the position is biased toward one of the sweep trace of the gap at A) and the sweep trace of the gap at the opposite location (C).

The heater according to claim 4 is the heater according to any one of claims 1 to 3, wherein each of the resistance heating wires is arranged in the order of the fourth row in addition to the first to third rows in the sweep direction. At least four rows of horizontal wiring portions arranged side by side and vertical wiring portions connecting the horizontal wiring portions are connected to form a sinuous shape,

A vertical wiring part (Y S12) connecting the first row horizontal wiring part (X _S1 ) and the second _row horizontal wiring part (X _S2 ) of a predetermined resistance heating wire ( _LS ) among the resistance heating wires, and The vertical wiring part (Y T12) connecting the first row horizontal wiring part (X _T1 ) and the second _row horizontal wiring part (X _T2 ) of the resistance heating wiring (L _T ) adjacent to the wiring (L _S ) faces each other with a gap. has an opposing point (D),

A vertical wiring part (Y _S34 ) connecting the third row horizontal wiring part (X _S3 ) and the fourth row horizontal wiring part (X _S4 ) of the resistance heating wiring (L _S ), and the resistance heating wiring (L _T ) The vertical wiring portion (Y _T34 ) connecting the third row horizontal wiring portion (X _T3 ) and the fourth row horizontal wiring portion (X _T4 ) has an opposing location (E) facing each other with a gap,

The point is that the sweep trace of the gap at the opposing location (D) and the sweep trace of the gap at the opposing location (E) are spaced apart in the width direction so as not to overlap.

The gist of the heater described in claim 5 is that, in the heater described in any one of claims 1 to 4, the horizontal wiring portion is formed longer than the vertical wiring portion.

The gist of the heater described in claim 6 is that, in the heater described in any one of claims 1 to 5, at least some of the vertical wirings are inclined with respect to the sweep direction.

The heater described in claim 7 has the gist of the heater described in any one of claims 1 to 6, wherein the resistance heating wiring has a positive resistance heating coefficient.

The main point of the fixing device described in claim 8 is to include the heater described in any one of claims 1 to 7.

The image forming apparatus according to claim 9 is provided with the heater according to any one of claims 1 to 7.

The summary of the heating device according to claim 10 is to include the heater according to any one of claims 1 to 7.

According to the heater of the present invention, a heater with excellent cracking properties can be obtained even in a heater with a narrow width in the sweep direction.

That is, the first row horizontal wiring part (X ₁ ) is longer than the second row horizontal wiring part (X ₂ ), and the second row horizontal wiring part (X ₂ ) is longer than the third row horizontal wiring part (X ₃ ). A pattern (P ₁ ) that is shorter than that of the pattern (P 1 ), or, the first row horizontal wiring portion (X ₁ ) is shorter than the second row horizontal wiring portion (X ₂ ), and the second row horizontal wiring portion (X ₂ ) is shorter than the third row By providing _a pattern P ₂ that is longer than _the horizontal wiring portion Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

Resistance heating wiring of the pattern (P ₁ ) and resistance heating wiring on both sides of the resistance heating wiring of the pattern (P ₂ ) are provided, and when these resistance heating wirings are arranged adjacent to each other, the unevenness of the horizontal wiring portions is engaged. Since this can be done, a dense overall pattern can be formed while dispersing the sweep traces formed by the vertical wiring portion so as not to overlap in the width direction. Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

The sweep trace of the gap at the opposing point (B) is located between the sweep traces of the respective gaps at the opposing point (A) and the opposing point (C), and the sweep trace of the gap at the opposing point (B) is located between the sweep traces of the respective gaps at the opposing point (A) and the opposing point (C). In the case where the sweep traces of each gap between the location A and the opposing location C are located biased toward one side, the opposing location, which is an area where vertical wiring portions are dense, can be prevented from appearing regularly in the sweep direction. . Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

In the case where the resistance heating wiring has at least four rows of horizontal wiring sections in the sweep direction, and the sweep trace of the gap at the opposing location (D) is spaced apart in the width direction so that the sweep trace of the gap at the opposing location (E) does not overlap, , it is possible to prevent opposing locations, which are areas where vertical wiring portions are dense, from appearing regularly in the sweep direction. Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

When the horizontal wiring portion is formed to be longer than the vertical wiring portion, a pattern suitable for a heater that is longer in the width direction than the sweep direction can be obtained. Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

When at least some of the vertical wirings are inclined with respect to the sweeping direction, the heat given to the object to be heated by the vertical wirings can be dispersed in the width direction during sweeping. Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

When the resistance heating wiring has a positive resistance heating coefficient, the heating state of each resistance heating wiring can be autonomously equalized. Therefore, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

1 is a plan view schematically showing an example of resistance heating wiring (pattern P ₁ ) in this heater.
FIG. 2 is a plan view schematically showing another example (pattern P ₂ ) of resistance heating wiring in this heater.
Fig. 3 is a plan view schematically illustrating an example of the arrangement of resistance heating wiring in this heater.
Figure 4 is a plan view schematically explaining each part of the resistance heating wiring in this heater.
Figure 5 is a plan view schematically explaining each part of the resistance heating wiring in this heater.
Fig. 6 is a plan view schematically explaining the opposing locations (A) to (C) of the resistance heating wiring in this heater.
Fig. 7 is a plan view schematically explaining the opposing locations (D) to (E) of the resistance heating wiring in this heater.
Fig. 8 is a plan view schematically showing the heater of Embodiment 1.
Fig. 9 is a plan view schematically showing the heater of Embodiment 2.
Fig. 10 is a plan view schematically showing the heater of Embodiment 3.
Fig. 11 is a plan view schematically showing the heater of Embodiment 4.
Fig. 12 is a plan view schematically showing the heater of Embodiment 5.
Fig. 13 is a plan view schematically showing the heater of Embodiment 5 (same as Fig. 12).
Fig. 14 is a plan view schematically showing the heater of Embodiment 6.
Fig. 15 is a plan view schematically showing the heater of Embodiment 7.
Fig. 16 is a schematic perspective view showing an example of a fixing device using this heater.
Fig. 17 is a schematic perspective view showing another example of a fixing device using this heater.
Fig. 18 is a schematic diagram showing an example of an image forming apparatus using this heater.

Hereinafter, the present invention will be described in detail with reference to the drawings.

[1] Heater

The main heater 1 is a heater that heats the object to be heated by sweeping at least one of the object to be heated and the main heater 1 in the sweep direction D ₁ while facing the object to be heated. In addition, the present heater 1 is provided with a base 11 and a plurality of resistance heating wires 12 on the base 11, each of which receives power separately.

(1) Regarding the correlation between the lengths of the horizontal wiring sections (X ₁ to _{X 3} )

The resistance heating wiring ₁₂ is formed between at least three rows of horizontal wiring sections It has a vertical wiring portion (Y) connected to it, and the horizontal wiring portion (X) and the vertical wiring portion (Y) are connected to form a sinuous shape. That is, each resistance heating wiring 12 has a serpentine (meandering) pattern (hereinafter, also simply referred to as a “serpentine pattern”).

And, among the plurality of resistance heating wirings 12, at least one resistance heating wiring 12 has the following pattern (P ₁ ) or pattern (P ₂ ).

(P ₁ ): A pattern in which the second row horizontal wiring part (X ₂ ) is formed shorter than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ).

(P ₂ ): A pattern in which the second row horizontal wiring part (X ₂ ) is formed longer than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ).

In this way, by providing the pattern P ₁ (see FIG. 1) or the pattern P ₂ (see FIG. 2), the sweep traces formed by the vertical wiring portions of these patterns do not overlap in the width direction D ₂ . It can be dispersed so that it does not occur.

That is, when the plurality of resistive heat-generating wires 12, each of which receives power separately, are considered as one cell, conventionally, each cell is arranged independently so as not to share a heat-generating area with adjacent cells. In this type of independent cell, the horizontal wiring between adjacent independent cells is separated so as not to overlap in the sweep direction. However, in such an independent cell arrangement, a region in which vertical wirings are densely connected and linearly connected is formed at the boundary between the independent cells. If the heater is wide in the sweep direction, even if there is an area where the above-mentioned vertical wires are dense and connected linearly, the number of rows of the horizontal wires must be adjusted so that, for example, this area passes through any part of the object to be heated at least once during the sweep. By performing increased patterning, uneven heating can be prevented.

However, in a heater with a narrow width in the sweep direction, the width in the sweep direction cannot be secured, so patterning with an increased number of rows of horizontal wiring cannot be performed. For this reason, areas where longitudinal wiring is dense and linearly connected to the object to be heated are locally swept, resulting in uneven heating.

In contrast, in the present invention, by having a pattern (P ₁ ) or a pattern (P ₂ ), patterning is performed so that the lateral wiring of a given cell is inserted into an adjacent cell. That is, the pattern P ₁ is formed so that the second row horizontal wiring part X ₂ is shorter than the first row horizontal wiring part X ₁ and the third row horizontal wiring part X3, as illustrated in FIG. 1 Likewise, an area that accommodates other patterns of resistance heating wires 12 can be secured in the area surrounded by the dotted line. Likewise, the pattern (P ₂ ) is such that the second row horizontal wiring portion (X ₂ ) is formed longer than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ), as illustrated in FIG. 2 As shown, an area that accommodates other patterns of resistance heating wires 12 can be secured in the area surrounded by the dotted line. By having these areas, it is possible to perform patterning in which the horizontal wiring of a given cell is inserted into an adjacent cell. Therefore, the heating area can be shared between adjacent cells. In this form, even if the heater has a narrow width in the sweep direction, it is possible to prevent the formation of a linearly connected area where the vertical wires are crowded and to disperse the vertical wires so that they are not crowded.

As described above, each of the resistance heating wirings 12 provided in this heater includes at least three rows of horizontal wiring portions arranged side by side in the sweep direction D ₁ in the order of the first row, the second row, and the third row. I have (X). That is, the resistance heating wiring 12 constituting this heater may have a pattern having only these three rows as the horizontal wiring portions X, or may be provided with four or more rows of horizontal wiring portions X. In addition, in the case of providing four or more rows of horizontal wiring portions (X), the first, second, and third rows are three consecutive horizontal wiring portions It may be taken out.

And, the resistance heating wiring 12 disposed in this heater is each provided with a vertical wiring portion Y that connects these horizontal wiring portions X. In addition, these horizontal wiring portions ).

In addition, of course, this heater may be provided with only the resistance heating wiring having the above-described serpentine pattern on the base, or other types of resistance heating wiring without the serpentine pattern may be used as resistors having the serpentine pattern. It may be provided in addition to the heat generation wiring.

In the pattern (P ₁ ), the first row horizontal wiring part (X ₁ ) is longer than the second row horizontal wiring part (X ₂ ), and the second row horizontal wiring part (X ₂ ) is longer than the third row horizontal wiring part (X 2 ). It is a shorter pattern than (X ₃ ).

That is, in other words, the second row horizontal wiring portion (X ₂ ) _{is disposed between the first row horizontal wiring portion (X 1 )} and the third _row horizontal wiring portion ( In addition, the length of the second row horizontal wiring portion (X ₂ ) in the width direction (D ₂ ) is equal to the width direction (D) of the first row horizontal wiring portion (X ₁ ) and the third _row horizontal wiring portion ( ₂ ) It is a pattern formed shorter than the length.

Therefore _{, the} length in the width direction (D _{2 )} of the first row horizontal wiring portion (X ₁ ) is _L In the case where _the length of the third row horizontal wiring portion (X _{3 ) in} the width direction (D _{2 )} is _L

In addition, the degree of each long and short is not particularly limited, _but can be _set to, for example, _{0.05≤L This value is preferably 0.2≤L _ In particular , when L} Excessive differences in the respective lengths of (X ₃ ) are suppressed. This form is particularly suitable when the resistance heating wiring 12 has a positive resistance heating coefficient, as will be described later. That is, by suppressing excessive differences in length, it is possible to make it easy for the resistance heating wiring 12 to autonomously equalize the heat generation state.

Here, the length _{of the} first row _horizontal wiring part

In the pattern (P ₂ ), the first row horizontal wiring part (X ₁ ) is shorter than the second row horizontal wiring part (X ₂ ), and the second row horizontal wiring part (X ₂ ) is shorter than the third row horizontal wiring part (X 2 ). It is a pattern formed longer than (X ₃ ).

That is, in other words, the second row horizontal wiring portion (X ₂ ) _{is disposed between the first row horizontal wiring portion (X 1 )} and the third _row horizontal wiring portion ( In addition, the length of the second row horizontal wiring portion (X ₂ ) in the width direction (D ₂ ) is equal to the width direction (D) of the first row horizontal wiring portion (X ₁ ) and the third _row horizontal wiring portion ( It is a pattern formed longer than the length of ₂ ).

Therefore _{, the} length in the width direction (D _{2 )} of the first row horizontal wiring portion (X ₁ ) is _L In the case where _the length of the third row horizontal wiring portion (X _{3 ) in} the width direction (D _{2 )} is _L

In addition, the degree of each long and short is not particularly limited, _but can be set to, for example, ₁ < _{L This value is preferably 1.05≤L _ In particular , when L} Excessive differences in the respective lengths of (X ₃ ) are suppressed. This form is particularly suitable when the resistance heating wiring 12 has a positive resistance heating coefficient, as will be described later. That is, by suppressing excessive differences in length, it is possible to make it easy for the resistance heating wiring 12 to autonomously equalize the heat generation state.

Here, the length _{of the} first row _horizontal wiring part

Additionally, for the pattern P ₁ and the pattern P ₂ , one resistance heating wire 12 may have both of these characteristics. Specifically, for example, _{a horizontal wiring portion (X) having a predetermined length in the width direction (D 2 )} , and a horizontal wiring portion ( The resistance heating wiring 12 having a pattern in which ) are alternately provided in the sweep direction has characteristics of both the pattern (P ₁ ) and the pattern (P ₂ ).

_{In addition , the length L} The length of _{the horizontal} wiring portion, such as the length _L That is, an imaginary line U perpendicular to the sweep direction is assumed, and the longest length defined by this imaginary line U is assumed to be the length of each horizontal wiring portion.

The above-described pattern (P ₁ ) and pattern (P ₂ ) are patterns of at least one resistance heating wire among the plurality of resistance heating wires (12) arranged on the base, and are either pattern (P ₁ ) or pattern (P ₂ ). It is sufficient to have at least one of the above, but among the plurality of resistance heating wires 12 disposed on the body, as the pattern of two different resistance heating wires, one having both the pattern P ₁ and the pattern P ₂ desirable.

In this way, in the heater having both the pattern P ₁ and the pattern P 2 as two different patterns of the resistance heating wiring 12, the patterns P ₁ and the patterns _{P 2 are} arranged irregularly. Alternatively, both may be arranged adjacent to each other (see FIGS. 3, 8-14).

In the case where both are arranged adjacent to each other, the _unevenness of the horizontal wiring portions A dense overall pattern can be formed. For this reason, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties. Furthermore, in at least three adjacent resistance heating wires 12, it is preferable that the patterns P ₁ and P ₂ are alternately arranged. That is, for example, the pattern (P ₁ ) and the pattern (P ₂ ) and the pattern (P ₁ ) are arranged side by side in this order in the width direction (D ₂ ), or the pattern (P ₂ ) and the pattern (P ₁ ). and a pattern (P ₂ ) arranged side by side in this order in the width direction (D ₂ ).

In addition, in particular, it is preferable that the pattern P ₁ and the pattern P ₂ have the same resistance value measured under the same conditions, as will be described later, and in particular, the pattern has the same length (the total of the horizontal wiring portion and the vertical wiring portion). It is preferable that the length is the same.

Additionally, the number of resistance heating wires 12 disposed on one base is not particularly limited, but can be, for example, three or more. The upper limit can be an appropriate number depending on the length of the body in the width direction, but can be, for example, 24 or less.

In addition, the resistance heating wiring 12 may be arranged in any way, and there is no particular limitation on the arrangement, but for example, they can be arranged side by side in the width direction D ₂ which is substantially perpendicular to the sweep direction D ₁ .

In addition, when a plurality of resistance heating wirings 12 are arranged side by side in the width direction D ₂ , the vertical wiring portion Y of each resistance heating wiring 12 is connected to the adjacent resistance heating wirings 12. However, in this heater, it is preferable that they face each other with a gap. That is, it is preferable that the vertical wiring portions (Y) of adjacent resistance heating wirings 12 face each other with a gap to form an opposing location (Z) (see Fig. 3).

(2) Regarding the correlation between opposing points (A to C)

In this heater, when at least four resistance heating wirings 12 having at least three rows of horizontal wiring portions X in the sweep direction D ₁ are arranged side by side in the width direction D ₂ , as follows: As shown, by positioning the sweep trace (T _B ) of the gap at the opposing point (B) between the opposing point (A) and the opposing point (C) with a bias toward either side, a heater with excellent cracking properties can be made. There is (see Figure 6).

That is, in this heater, in the width direction D ₂ which is approximately perpendicular to the sweep direction D ₁ , the first wiring L ₁ , the second wiring L ₂ , the third wiring L ₃ , and the In the form in which the four wirings (L ₄ ) are arranged in order and provided with at least four resistance heating wirings (12), opposing points can be formed between the vertical wiring portions (Y) of the adjacent resistance heating wirings (12). .

In this case, a vertical wiring portion (Y 112 ) connecting the first row horizontal wiring portion (X ₁₁ ) and the second row horizontal wiring portion (X ₁₂ ) of the first wiring ₍ L ₁ ), and a second wiring (L) ₂ ) The opposing location where the vertical wiring portion (Y ₂₁₂ ) connecting the first row horizontal wiring portion (X ₂₁ ) and the second row horizontal wiring portion (X ₂₂ ) are opposed with a gap is referred to as the opposing location (A) ,

A vertical wiring part (Y ₂₂₃ ) connecting the second row horizontal wiring part (X ₂₂ ) and the third row horizontal wiring part (X ₂₃ ) of _the second wiring (L 2 ), and the second row of the third wiring (L ₃ The opposing location where the vertical wiring portion (Y ₃₂₃ ) connecting the row horizontal wiring portion (X ₃₂ ) and the third row horizontal wiring portion (X ₃₃ ) are opposed with a gap is called the opposing location (B),

A vertical wiring part (Y ₃₁₂ ) connecting the first row horizontal wiring part (X ₃₁ ) and the second row horizontal wiring part (X ₃₂ ) of the third wiring (L ₃ ), and the first row of the fourth wiring (L ₄ ) In the case where _the vertical wiring portion (Y ₄₁₂ ) connecting the row horizontal wiring portion (X ₄₁ ) and the second row horizontal wiring portion (

The sweep trace T _B of the gap at the opposing point B is located between the sweep trace T _A of the gap at the opposing point A and the sweep trace T C of the gap at the opposing _{point C} ; Together, it is preferable that the position is biased toward one of the sweep trace T _A of the gap at the opposing point A and the sweep trace T _C of the gap at the opposing point C (see Fig. 6).

That is, for this form, the two vertical wiring portions Y ₂₂₃ and Y ₃₂₃ forming the opposing location B are both connected to the opposing location A or the opposing location C. It is preferable that they are arranged lopsidedly.

The opposing location B may be biased to a certain extent toward the opposing location A or the opposing location C. For example, the sweep trace T _A of the gap between the opposing location A and the opposing location B The length in the width direction (D ₂ ) of the gap between the sweep trace T _B of the gap is W _AB , and the sweep trace of the gap between the gap trace T _B at the opposing point B is When the length of the gap in the trace T _C in the width direction D ₂ is W _BC (see FIG. 6), 0.02 ≤ W _AB /W _BC ≤ 50. This value is preferably 0.1≤W _AB /W _BC≤10 , and more preferably 0.15≤W _AB /W _BC≤6.5 .

In this way, the sweep trace of the gap at the opposing point (B) is located between the sweep traces of the respective gaps at the opposing point (A) and the opposing point (C), and the sweep trace of the gap at the opposing point (B) is also located between the sweep traces of the gap at the opposing point (B). In the case where the opposing location (A) and the opposing location (C) are located biased toward one of the sweep traces of each gap, the opposing location, which is an area where the vertical wiring portion (Y) is densely located, is located in the sweep direction (D ₁ ) can be prevented from appearing regularly. For this reason, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

The form of the above-described pattern (P ₁ ) and pattern (P ₂ ) is any of the first wiring (L ₁ ), the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring (L ₄ ). It may be established as a heater by not having a resistance heating wiring and having resistance heating wiring other than these having a pattern (P ₁ ) and/or a pattern (P ₂ ). However, in this heater, at least one resistance heating wire among the first wire (L ₁ ), the second wire (L ₂ ), the third wire (L ₃ ), and the fourth wire (L ₄ ) has a pattern (P ₁ ) or a pattern (P ₂ ) is preferred.

In addition, in this heater, among the first wiring (L ₁ ), the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring (L ₄ ), the second wiring (L ₂ ) and the third wiring (L ₃ ) preferably has a pattern (P ₁ ) and a pattern (P ₂ ), respectively. That is, for example, the second wiring (L ₂ ) has a pattern (P ₁ ), the third wiring (L ₃ ) has a pattern (P ₂ ), or the second wiring (L ₂ ) has a pattern (P 2 ). ₂ ), and the third wiring (L ₃ ) preferably has a pattern (P ₁ ). This form is preferable from the viewpoint of self-temperature balancing function because it allows the areas where each resistance heating wiring exists to be more compactly integrated (see Figs. 8, 10-14).

(3) Regarding the correlation of opposing points (D to E)

In this heater, when at least two resistance heating wirings 12 having at least four rows of horizontal wiring portions X in the sweep direction D ₁ are arranged side by side in the width direction D ₂ , as follows: As shown, the sweep trace of the gap at the opposing point (D) and the sweep trace of the gap at the opposing point (E) are spaced apart in the width direction so as not to overlap, so that a heater with excellent cracking properties can be obtained (see Fig. 7). .

In this heater, the resistance heating wiring ₁₂ has at least four rows of horizontal wiring portions You can have it. The resistance heating wiring 12 constituting this heater may have a pattern having only these four rows as horizontal wiring portions (X), or may be provided with five or more rows of horizontal wiring portions (X). In addition, in the case of providing five or more rows of horizontal wiring portions It may be taken out of the four.

And, the resistance heating wiring 12 disposed in this heater is each provided with a vertical wiring portion Y that connects these horizontal wiring portions X. Additionally, these horizontal wiring portions (X) and vertical wiring portions (Y) are connected, and the resistance heating wirings _LS and _LT as a whole have a sinuous pattern.

In addition, in this heater, at least two resistance heating wirings 12 having at least four rows of horizontal wiring portions X as described above can be provided adjacent to each other.

That is, in the width direction (D ₂ ) approximately perpendicular to the sweep direction (D ₁ ), a predetermined resistance heating wiring (L _S ) having at least 4 rows of horizontal wiring portions (X), and at least 4 rows of horizontal wiring portions ( Two resistance heating wires (12) of a given resistance heating wire (L _T ) having X) can be placed adjacent to each other. And in this form, opposing positions can be formed between the vertical wiring portions Y of the resistance heating wirings _LS and _LT .

In this case, the vertical wiring part (Y _S12 ) connecting the first row horizontal wiring part (X _S1 ) and the second row horizontal wiring part (X _S2 ) of the resistance heating wiring ( _LS ), and the resistance heating wiring (L The opposing _location where the vertical wiring portion (Y _{T12 ) connecting the first row horizontal wiring portion (X T1 )} and _the second row horizontal wiring portion ( ,

A vertical wiring part (Y _S34 ) connecting the third row horizontal wiring part (X _S3 ) and the fourth row horizontal wiring part (X _S4 ) of the resistance heating wiring (L _S ), and the third row of the resistance heating wiring (L _T ) In the case where the opposing location where the vertical wiring portion (Y _T34 ) connecting the row horizontal wiring portion (X _T3 ) and the fourth row horizontal wiring portion (X _T4 ) is opposed with a gap is referred to as the opposing location (E),

It is preferable that the sweep trace T D of the gap at the opposing point _D and the sweep trace T E of the gap at the opposing point _E do not overlap, and further, the sweep trace T of the gap at the opposing point D It is preferable that _D ) and the sweep trace T _E of the gap at the opposing location E are spaced apart in the width direction (see FIG. 7 ).

That is, it is preferable that the separation distance W _DE between the sweep trace T _D and the sweep trace T _E exceeds 0 μm. More specifically, W _DE is preferably equal to or larger than the width of the sweep trace (width in the width direction D _{2 ) with a smaller width (width in the width direction D 2 )} among the sweep trace (T _D ) and the sweep trace (TE). do. On the other hand, it is preferable that this W _DE is smaller than the integrated width of the width of the sweep trace T _D and the width of the sweep trace T _E . This form is preferable from the viewpoint of self-temperature balancing function because it allows the areas where each resistance heating wiring exists to be more compactly integrated.

In this way, the sweep trace T D of the gap at the opposing point _D does not overlap with the sweep trace T E of the gap at the opposing point E, and the sweep trace T _D of the gap at the opposing point _D ) and the sweep trace T _E of the gap at the opposing location E are spaced apart in the width direction, the opposing location, which is an area where the vertical wiring portion Y is dense, appears regularly in the sweep direction D ₁ can be prevented. For this reason, even a heater with a narrow width in the sweep direction can be made into a heater with excellent cracking properties.

In addition, in the first wiring (L ₁ ), the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring (L ₄ ), the above-described pattern (P ₁ ) and pattern (P ₂ ) The form is not particularly limited, and any wiring may or may not be provided.

In addition, of course, the resistance heating wiring ₁₂ has at least four rows of horizontal wiring portions , and also includes a vertical wiring portion (Y) connecting these horizontal wiring portions (X), and the horizontal wiring portion (X) and the vertical wiring portion (Y) are connected to form resistance heating wiring (L _S and L _T ) as a whole. becomes a sinuous pattern, and in the width direction (D ₂ ), in the order of the first wiring (L ₁ ), the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring (L ₄ ). It is arranged in a form having at least four resistance heating wires 12, and in the case where the longitudinal wiring portions (Y) of adjacent resistance heating wires 12 form opposing locations, the opposing locations (A) described above are All opposing locations of ~(E) can be provided simultaneously.

That is, the sweep trace T B of the gap at the opposing point _B is between the sweep trace T A of the gap at the opposing point _A and the sweep trace T C of the gap at the opposing _{point C.} As it is positioned, it is positioned biased toward one of the sweep trace T A of the gap at the opposing point _A and the sweep trace T _C of the gap at the opposing point C The sweep trace T _D of the gap at the opposing point E does not overlap, and the sweep trace T _D of the gap at the opposing point _D and the gap between the opposing point E The sweep traces (T _E ) of can be spaced apart in the width direction (see FIGS. 12-14).

(4) About resistance heating wiring

In the resistance heating wiring 12 disposed in this heater, the horizontal wiring portion (X) and the vertical wiring portion (Y) may be of the same length, or one may be formed longer, but the horizontal wiring portion ( It is preferable that it is formed longer than the line portion (Y). This is because each of the above-described patterns functions more effectively in a pattern in which the horizontal wiring portion (X) is formed longer than the vertical wiring portion (Y).

When the horizontal wiring portion (X) is formed to be longer than the vertical wiring portion (Y), the extent is not particularly _limited , but the _length of the horizontal wiring portion ( When the length of the sweep direction (D ₁ ) _of (Y) is L _Y , for example, 1 < _{L This} ratio _{is preferably 1.5≤L}

In addition, the measurement of _the length _L That is, an imaginary line U perpendicular to the sweep direction is assumed, and the longest length defined by this imaginary line U is referred to as the length _L Meanwhile, the measurement of the length L _Y in the sweep direction D ₁ of the vertical wiring portion Y is as shown in FIGS. 4 and 5. That is, an imaginary line (U) perpendicular to the sweep direction is assumed, and the longest length defined by this imaginary line (U) is called the length L _Y of the vertical wiring portion (Y).

In addition, the horizontal wiring part

In addition, _the horizontal wiring portion Specifically, it may be arranged at 90 degrees with respect to the sweep direction D ₁ or may be inclined at a predetermined angle with respect to the sweep direction D ₁ . Among these, when it is inclined with respect to the sweep direction D ₁ , it is usually in the range of exceeding 80 degrees and 100 degrees or less (however, excluding 90 degrees) with respect to the sweep direction D ₁ . In addition, there are multiple rows of horizontal wiring portions

On the other hand, the vertical wiring portion Y _constituting the resistance heating wiring 12 can electrically connect adjacent horizontal wiring portions They are arranged parallel or inclined. Specifically, it may be arranged at 0 degrees with respect to the sweep direction D ₁ or may be inclined at a predetermined angle with respect to the sweep direction D ₁ . Among these, when it is inclined with respect to the sweep direction D ₁ , it can be set to a range of -80 degrees or more and 80 degrees or less with respect to the sweep direction D ₁ . This angle is preferably -60 degrees or more and 60 degrees or less, and more preferably -50 degrees or more and 50 degrees or less.

Additionally, the vertical wiring portions (Y) can be arranged in different configurations, but from the viewpoint of forming opposing locations, it is preferable that the vertical wiring portions (Y) of different adjacent resistance heating wirings are substantially parallel. That is, for example, as described above, the vertical wiring portion Y ₁₁₂ of the first wiring L ₁ and the vertical wiring portion Y ₂₁₂ of the second wiring L ₂ constituting the opposing location A are approximately It is desirable to be parallel. This also applies to opposing locations (B) to (E) and other opposing locations.

The conductive material constituting the resistance heating wiring of this heater is a conductive material capable of generating heat according to its resistance value when energized. The type of conductive material used for resistance heating wiring is not particularly limited, but for example, silver, copper, gold, platinum, palladium, rhodium, tungsten, molybdenum, rhenium (Re), and ruthenium (Ru) can be used. These may be used alone or two or more types may be used together. When two or more types are used together, an alloy can be used. More specifically, silver-palladium alloy, silver-platinum alloy, platinum-rhodium alloy, silver-ruthenium, silver, copper, and gold can be used.

Additionally, each resistance heat generation wiring may have any resistance heat generation characteristic, but it is preferable that a self-temperature balancing action (self-temperature compensation action) can be exerted among each resistance heat generation wiring. From that point of view, it is preferable that the conductive material constituting the resistance heating wiring has a positive resistance heating coefficient. Specifically, the temperature coefficient of resistance in the temperature range of -200°C to 1000°C is preferably 100ppm/°C to 4400ppm/°C, more preferably 300ppm/°C to 3700ppm/°C, and 500ppm/°C. It is especially preferable that it is 3000ppm/℃ or less. Examples of such materials include silver-based alloys such as silver-palladium alloy.

In this way, when resistance heating wires formed using a conductive material having a positive temperature coefficient of resistance are connected in parallel, these plural resistance heating wires exert a self-temperature balancing effect. That is, for example, if there is a second resistance heating wire sandwiched between the first resistance heating wire and the third resistance heating wire, when the temperature of the second resistance heating wire decreases, heat is transferred to the surrounding first resistance heating wire and It is supplemented from the third resistance heating wiring. In this case, the current to the first resistance heat generation wiring and the third resistance heat generation wiring whose temperature has decreased increases, and an action to autonomously recover the temperature decrease due to the lost heat is activated. That is, the resistance heat generation wiring around the second resistance heat generation wiring acts to compensate for the decrease in temperature of the second resistance heat generation wiring. In this way, this heater can be autonomously controlled to generate heat uniformly across a plurality of resistance heating wires.

The dimensions (width, length, thickness, etc.) of the resistance heating wiring are not particularly limited and can be determined appropriately depending on the conductive material used and the required electrical characteristics. However, from the viewpoint of obtaining a better self-temperature balance effect, the sweep trace _{of the} first row horizontal wiring portion ( The length (K) over which the sweep trace of (X _Q2 ) and the sweep trace of _the third _row horizontal wiring portion ( It is preferable that it is 8% or more (the upper limit is 33.333%) with respect to the total length of the third row horizontal wiring portion (X _Q2 ) and the third row horizontal wiring portion (X _Q3 ). By being within this range, the area where each resistive heating wiring exists becomes more compact, and a better self-temperature balance effect can be obtained compared to cases outside the above range. This value is more preferably 10% or more, and particularly preferably 19% or more. In addition, it is preferable that this ratio is larger, but can be, for example, 33% or less, further 32% or less, especially 31% or less.

In addition, in the case where each resistance heat generation wiring has substantially the same heat generation value, each resistance heat generation wiring may be formed so that the resistance value is substantially the same. In that case, the resistance heating wiring can be formed as a similar wiring pattern with the same line length, same line width, and same thickness. The thickness of the resistance heating wiring can be, for example, 3 μm or more and 40 μm or less from the viewpoint of area specific resistance.

In addition, having substantially the same calorific value means that each resistance heat generation wiring has substantially the same resistance temperature coefficient and resistance value under the same measurement conditions. For example, the difference in temperature coefficient of resistance between resistance heating wirings can be within ±20%, and the difference in resistance values between resistance heating wirings can be within ±10%.

(5) About the aircraft

The base 11 is a board that supports resistance heating wiring.

The size or shape of the body is not particularly limited, but in the case of a shape in which the length in the width direction (D ₂ ) is longer than the length in the sweep direction (D ₁ ), the effect of the structure of the present invention is particularly easy to be obtained. Specifically, for example, if the length in the sweep direction (D ₁ ) of the body is L _D1 and the length in the width direction (D ₂ ) of the body is L _D2 , the length ratio (L _D1 /L _D2 ) can be between 0.001 and 0.25. This ratio is preferably 0.005 or more and 0.2 or less, and more preferably 0.01 or more and 0.15 or less. Additionally, the thickness can be, for example, 0.1 to 20 mm depending on the material and dimensions of the base.

The material of the base is not particularly limited as long as it can cause resistance heating wiring to generate heat on its surface. As the base, for example, metal, ceramics, and composite materials thereof can be used. When using a conductive material such as metal, the base can be constructed by forming an insulating layer (not shown) on the conductive material. In this case, the resistance heating wiring is formed on the insulating layer.

Examples of metals constituting the base include steel and the like, and among them, stainless steel can be suitably used. The type of stainless steel is not particularly limited, and ferritic stainless steel and/or austenitic stainless steel are preferred. Also, among these stainless steels, varieties with particularly excellent heat resistance and/or oxidation resistance are preferred. For example, SUS430, SUS436, SUS444, SUS316L, etc. can be mentioned. These may be used alone or two or more types may be used together.

Additionally, as the metal constituting the base, aluminum, magnesium, copper, and alloys of these metals can be used. These may be used alone or two or more types may be used together. Among them, aluminum, magnesium and their alloys (aluminum alloy, magnesium alloy, Al-Mg alloy, etc.) have a small specific gravity, so by employing them, the weight of this heater can be reduced. Additionally, since copper and its alloys have excellent thermal conductivity, the cracking properties of this heater can be improved by employing them.

As described above, when using a conductive material as a material constituting the base, it is desirable to form an insulating layer on the conductive material. The material of the insulating layer is not particularly limited as long as it can achieve electrical insulation between the conductive material constituting the base and the resistance heating wiring, but glass, ceramics, glass/ceramics, etc. are particularly preferable. Among these, when using a metal (stainless steel, etc.) as a material constituting the base, the material of the insulating layer is preferably glass from the viewpoint of its thermal expansion balance, and crystallized glass and semi-crystallized glass are more preferable. Specifically, SiO ₂ -Al ₂ O ₃ -MO-based glass is preferable. Here, MO is an oxide of an alkaline earth metal (MgO, CaO, BaO, SrO, etc.). The thickness of the insulating layer is not particularly limited, but is preferably 30 to 200 μm.

Additionally, when constructing a base using ceramics, any material that can achieve electrical insulation between resistance heating wiring installed on the base at high temperatures is sufficient. Examples include aluminum oxide, aluminum nitride, zirconia, silica, mullite, spinel, cordierite, and silicon nitride. These may be used alone or two or more types may be used together. Among these, aluminum oxide and aluminum nitride are preferred. Additionally, composite materials of metal and ceramics include SiC/C and SiC/Al. These may be used alone or two or more types may be used together.

In addition, as described above, when heating the object to be heated by sweeping the object to be heated and the heater in a relative sweep direction (D ₁ ) with the heating surface of the heater facing the object to be heated, the sweep direction of the gas The cross-sectional shape of (D ₁ ) is an arc shape that is convex on the side facing the object to be heated, centered on an axis perpendicular to the sweep direction (D ₁ ) (i.e., a cylinder or cylinder cut with a plane parallel to the central axis). shape). Additionally, each resistance heating wire may be arranged on the convex surface or on the opposite surface (concave surface). With such a shape, the heated object swept on the roll can be efficiently heated by attaching the heater to the cylindrical roll and rotating the roll.

(6) Regarding other circuits, etc.

This heater may be provided with other circuits in addition to the resistance heating wiring described above. Other circuits include power supply wiring for supplying electrodes to the resistance heating wiring, lands for connecting external wiring for supplying electrodes to the main heater, and the like. These may have only one type or two or more types.

The resistance heating wiring itself may be provided with a power supply wiring portion R (FIG. 15).

(7) About use

This heater is built into an image forming device or fixing device such as a printer, copier, or facsimile, and can be used as a fixing heater for fixing toner, ink, etc. to a recording medium. Additionally, it can be built into a heater and used as a heating device for uniformly heating (drying or baking, etc.) a target object such as a panel. In addition, heat treatment of metal products, heat treatment of coating films and coatings formed on substrates of various shapes, etc. can be suitably performed. Specifically, heat treatment of coating films (filter constituent materials) for flat panel displays, coating drying of painted metal products, automobile-related products, woodworking products, etc., electrostatic hair transplantation adhesion drying, heat treatment of plastic processed products, and solder ripple of printed circuit boards. It can be used for printing and drying low and thick film integrated circuits.

(8) About embodiment

From the above, this heater can have the following embodiments, for example. In addition, in FIGS. 8 to 15 according to the following embodiment, the aspect ratio is changed (changed to become larger in the sweep direction D ₁ and smaller in the width direction D ₂ ) so that symbols can be attached to the drawings. This is a schematic floor plan.

<Embodiment 1>

A plan view schematically showing the heater of Embodiment 1 is shown in FIG. 8.

The heater of Embodiment 1 has a gas (11). In this body 11, the ratio (L _D1 /L _D2 ) of the length L _D1 in the sweep direction (D ₁ ) and the length L _D2 in the width direction (D ₂ ) is 0.013 or more and 0.076 or less, so that the sweep direction (D ₁ ) It is a shape in which the length in the width direction (D ₂ ) is longer than the length of (in the following embodiments, all are the same substrates). Additionally, five resistance heating wires 12 each receiving power separately are provided on the body 11. Each resistance heating wiring is formed by baking a paste containing a silver-palladium alloy, each has a positive resistance heating coefficient, and the difference in resistance temperature coefficient between each resistance heating wiring is within ±20% ( In the following embodiments, all resistance heating wiring is the same).

In addition, all of these resistive heating wires ₁₂ have three rows of horizontal wiring sections It has a line (Y). All of _the horizontal wiring portions And, the horizontal wiring portion (X) is electrically connected by the vertical wiring portion (Y) and is formed into a sinuous shape.

Additionally, these five resistance heating wires 12 are arranged in the width direction D ₂ perpendicular to the sweep direction D ₁ , from the left side of FIG. 8 , the first wiring L ₁ , the second wiring L ₂ , and the third wiring L 1 . The wiring (L ₃ ), the fourth wiring (L ₄ ), and the fifth wiring (L ₅ ) are arranged side by side in that order, of which the second wiring (L ₂ ) and the fourth wiring (L ₄ ) are in the second row. The horizontal wiring portion (X ₂ ) has a pattern (P ₂ ) formed to be longer than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ). In addition, the third wiring (L ₃ ) has a pattern (P ₁ ) in which the second row horizontal wiring portion (X ₂ ) is shorter than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ). has. That is, the heater 1 of Embodiment 1 simultaneously has both the pattern P ₁ and the pattern P ₂ as different resistance heating wires, and the pattern P ₁ and the pattern P ₂ are arranged adjacent to each other. It is done.

In addition, the vertical wiring portion (Y ₁₁₂ ) connecting the first row horizontal wiring portion (X ₁₁ ) and the second row horizontal wiring portion (X ₁₂ ) of the first wiring (L ₁ ), and the second wiring (L ₂ ). Vertical wiring portions (Y ₂₁₂ ) connecting the first row horizontal wiring portion (X ₂₁ ) and _the second row horizontal wiring portion ( Likewise, the vertical wiring portion (Y 223 ) connecting the second row horizontal wiring portion (X ₂₂ ) and the third row horizontal wiring portion (X ₂₃ ) of the second wiring ( _L2 ), and the third wiring portion (L ₃ ) The vertical wiring portion (Y ₃₂₃ ) connecting the second-row horizontal wiring portion (X ₃₂ ) and _the third-row horizontal wiring portion ( Also, similarly, a vertical wiring part (Y ₃₁₂ ) connecting the first row horizontal wiring part (X ₃₁ ) and the second row horizontal wiring part (X ₃₂ ) of the third wiring (L ₃ ), and a fourth wiring (L ₄ ) The vertical wiring portion (Y ₄₁₂ ) connecting the first row horizontal wiring portion (X ₄₁ ) and _the second row horizontal wiring portion (

And, the sweep trace T _B of the gap at the opposing point (B) is located between the sweep trace T A of the gap at the opposing point ( _A ) and the sweep trace T _C of the gap at the opposing point (C). The sweep trace of the gap in (A) is located biased toward the side of T _A. That is, when the gap distance between the sweep traces T _A and the sweep traces T _B is set to W _AB , and the gap distance between the sweep traces T _B and the sweep traces T _C is set to W _BC , W _AB <W _BC .

In this way, the heater of Embodiment 1 is provided with five resistance heat generation wires 12 that each receive power separately, and the heating area in the sweep direction D 1 is shared between each resistance heat generation wire, and furthermore, the adjacent heat generation wires share the heating area in the sweep direction D ₁ . The opposing portions of the vertical wiring portions (Y) of the resistance heating wiring are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D ₁ , and forming a dense resistance heating wiring pattern as a whole. As a result, even if it is a narrow heater with only three horizontal _wiring sections

In addition, of course, the shape shown in FIG. 8 can be used as a left-right mirror image inverted pattern, and the same effect can be obtained. The same applies to other embodiments below.

In addition, although each vertical wiring portion Y is inclined in the same direction at the same angle in FIG. 8, these may be independently different angles, and may be independently inclined in different directions. Furthermore, the inclined vertical wiring portion Y and the non-slanted vertical wiring portion Y (parallel to the sweep direction D ₁ ) may be mixed. The same applies to other embodiments below.

<Embodiment 2>

A plan view schematically showing the heater of Embodiment 2 is shown in FIG. 9.

The heater of Embodiment 1 includes a base body 11 and five resistance heating wires 12 each receiving power separately on the base body 11. All of these resistance heating wires ₁₂ are composed of three rows of horizontal wiring sections ( It has Y). All of _the horizontal wiring portions And, the horizontal wiring portion (X) is electrically connected by the vertical wiring portion (Y) and is formed into a sinuous shape.

In addition, these five resistance heating wires 12 are arranged in the width direction D ₂ perpendicular to the sweep direction D ₁ , from the left side of FIG. 9 , the first wiring L ₁ , the second wiring L ₂ , and the third wiring L 1 . The wiring (L ₃ ), the fourth wiring (L ₄ ), and the fifth wiring (L ₅ ) are arranged side by side in that order, of which the first wiring (L ₁ ) and the fifth wiring (L 5 ) are the second wiring (L ₅ ). The row horizontal wiring part (X ₂ ) has a pattern (P ₁ ) that is shorter than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ). In addition, the third wiring (L ₃ ) has a pattern (P 2 ) in which the second row horizontal wiring portion (X ₂ ) is formed longer than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ) _. has. That is, the heater 1 of Embodiment 2 simultaneously has both the pattern P ₁ and the pattern P ₂ as different resistance heating wires. However, the pattern (P ₁ ) and the pattern (P ₂ ) are not arranged adjacent to each other.

In addition, similarly to the heater of Embodiment 1 (FIG. 8), it has opposing points (A), opposing points (B), and opposing points (C), and the sweep trace T _B is between the sweep trace T _A and the sweep trace T _C. In addition to being located at , the location is biased toward the sweep trajectory T _A. That is, when the gap distance between the sweep traces T _A and the sweep traces T _B is set to W _AB , and the gap distance between the sweep traces T _B and the sweep traces T _C is set to W _BC , W _AB <W _BC .

In this way, the heater of Embodiment 2 is provided with five resistance heat generation wires 12 that each receive power separately, and the heating area in the sweep direction D 1 is shared between each resistance heat generation wire, and furthermore, the adjacent heat generation wires share the heating area in the sweep direction D ₁ . The opposing portions of the vertical wiring portions (Y) of the resistance heating wiring are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D ₁ , and forming a dense resistance heating wiring pattern as a whole. As a result, even if it is a narrow heater with only three horizontal _wiring sections

<Embodiment 3>

A plan view schematically showing the heater of Embodiment 3 is shown in FIG. 10.

The heater of Embodiment 3 includes a base 11 and five resistance heating wires 12 each receiving power separately on the base 11. All of these resistance heating wires ₁₂ are composed of three rows of horizontal wiring sections ( It has Y). All of _the horizontal wiring portions And, the horizontal wiring portion (X) is electrically connected by the vertical wiring portion (Y) and is formed in a sinuous shape.

In addition, these five resistance heating wirings 12 are arranged in the width direction D ₂ perpendicular to the sweep direction D ₁ , from the left side of FIG. 10 , the first wiring L ₁ , the second wiring L ₂ , and the third wiring L 1 . The wiring (L ₃ ), the fourth wiring (L ₄ ), and the fifth wiring (L ₅ ) are arranged side by side in that order, of which the second wiring (L ₂ ) and the fourth wiring (L 4 ) are the second wiring (L ₄ ). The row horizontal wiring part (X ₂ ) has a pattern (P ₁ ) that is shorter than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ). In addition, the third wiring (L ₃ ) has a pattern (P 2 ) in which the second row horizontal wiring portion (X ₂ ) is formed longer than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ) _. has. That is, the heater 1 of Embodiment 3 simultaneously has both the pattern P ₁ and the pattern P ₂ as different resistance heating wires, and the pattern P ₁ and the pattern P 2 are arranged adjacent to each other. .

In addition, similarly to the heater of Embodiment 1 (FIG. 8) and the heater of Embodiment 2 (FIG. 9), it has opposing points (A), opposing points (B), and opposing points (C), and the sweep trajectory T _B is: It is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the side of the sweep trace T _A. That is, when the gap distance between the sweep traces T _A and the sweep traces T _B is set to W _AB , and the gap distance between the sweep traces T _B and the sweep traces T _C is set to W _BC , W _AB <W _BC .

In this way, the heater of Embodiment 3 is provided with five resistance heat generation wires 12 that each receive power separately, and the heating area in the sweep direction D 1 is shared between each resistance heat generation wire, and in addition, the adjacent heat generation wires share a heating area in the sweep direction D ₁ . The opposing portions of the vertical wiring portions (Y) of the resistance heating wiring are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D ₁ , and forming a dense resistance heating wiring pattern as a whole. As a result, even if it is a narrow heater with only three horizontal _wiring sections

In Embodiment 1, Embodiment 2, and Embodiment 3 described above, Embodiment 1 and Embodiment 2 are more preferable than Embodiment 3 from the viewpoint of cracking. This means that the second wiring (L ₂ ), the third wiring (L 3 ), and the fourth wiring (L 4 ) provided in the heater of Embodiment 1 (FIG. ₈ ) and the heater of Embodiment 2 (FIG. ₉ ) are implemented. The _{overlapping area} of _the sweep trace between the horizontal wiring portions Because it's big.

That is, the second wiring L ₂ of the heater of Embodiment 3 includes the sweep trace of the first row horizontal wiring part X ₂₁ , the sweep trace of the second row horizontal wiring part X ₂₂ , and the third row The length (K) over which the sweep _trajectories of the horizontal wiring portion (X ₂₃ ) all overlap is equal to the length K _of the first row horizontal wiring portion ( ₂₃ ) is 11.8% of the total length. In addition, the third wiring L ₃ of _the heater of Embodiment 3 includes a sweep trace of the first row horizontal wiring part X ₃₁ , a sweep trace of the second row horizontal wiring part The sweep trace of the horizontal wiring portion (X ₃₃ ) does not have an overlapping length (K). In addition, the fourth wiring L ₄ of _the heater of Embodiment 3 includes a sweep trace of the first row horizontal wiring part X ₄₁ , a sweep trace of the second row horizontal wiring part The length (K) _over which the sweep trajectories of _the horizontal wiring portion _{( 43} ) is 11.8% of the total length.

In contrast, the second wiring L ₂ of the heater of Embodiment 1 has a sweep trace of the first row horizontal wiring part X ₂₁ , a sweep trace of the second row horizontal wiring part X ₂₂ , and a third The length (K) over which the sweep _trajectories of _{the row horizontal wiring portion (X 23 )} all overlap is the first column horizontal wiring portion ( It is _24.3 % of the total length of In addition, the third wiring L ₃ of _the heater of Embodiment 1 has a sweep trace of the first row horizontal wiring part X ₃₁ , a sweep trace of the second row horizontal wiring part The length K over which _the sweep trajectories of the horizontal wiring portion (X ₃₃ ) all overlap is equal to the length K _of the first row horizontal wiring portion ( ₃₃ ) is 16.6% of the total length. In addition, the fourth wiring L ₄ of the heater of Embodiment 1 has a sweep trace of the first row horizontal wiring part X ₄₁ , a sweep trace of the second row horizontal wiring part X ₄₂ , and a third row The length (K) _over which the sweep trajectories of _the horizontal wiring portion _{( 43} ) is 24.3% of the total length.

In addition, the second wiring L ₂ of _the heater of Embodiment 2 includes a sweep trace of the first row horizontal wiring part X ₂₁ , a sweep trace of the second row horizontal wiring part The length (K) over which the sweep _trajectories of the horizontal wiring portion (X ₂₃ ) all overlap is equal to the length K _of the first row horizontal wiring portion ( ₂₃ ) is 20.5% of the total length. In addition, the third wiring L ₃ of _the heater of Embodiment 2 has a sweep trace of the first row horizontal wiring part X ₃₁ , a sweep trace of the second row horizontal wiring part _The length K over which the sweep trajectories of the wiring portion (X ₃₃ ) _all overlap is _the first row horizontal wiring portion ( ) is 16.6% of the total length. In addition, the fourth wiring L ₄ of _the heater of Embodiment 2 has a sweep trace of the first row horizontal wiring part X ₄₁ , a sweep trace of the second row horizontal wiring part The length (K) _over which the sweep trajectories of _the horizontal wiring portion _{( 43} ) is 20.5% of the total length.

In this _way , _the overlap of sweep trajectories between the horizontal _wiring portions In other words, compared to Embodiment 3, Embodiments 1 and 2 are larger. As a result, the area where each resistance heating wiring of the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring (L ₄ ) exists is compacted, and a better self-temperature balancing effect can be obtained. Because.

On the other hand, the third wiring L ₃ in the heater of Embodiment 3 has two sweep traces: a sweep trace of the first row horizontal wiring portion X ₃₁ and a sweep trace of the second row horizontal wiring portion X ₃₂ The trajectories overlap at the same time. In addition, the two sweep traces of the second row horizontal wiring portion (X ₃₂ ) and the sweep trace of the third row horizontal wiring portion (X ₃₃ ) are shaped to overlap at the same time. However, there are three sweep traces: the sweep trace of the first row horizontal wiring part (X ₃₁ ), the sweep trace of the second row horizontal wiring part (X ₃₂ ), and the sweep trace of the third row horizontal wiring part (X ₃₃ ) At the same time, it has a shape that does not overlap.

In this way, by forming the resistance heating wiring into a shape with a small amount of overlap of sweep traces, it becomes difficult to compactly integrate the area where the resistance heating wiring exists, compared to the resistance heating wiring having a shape with a large amount of overlap of sweep traces. However, in the heater of Embodiment 3, by forming the third wiring L ₃ into a shape with a small amount of overlap in the sweep trace, the degree of freedom of the shapes of the other two wirings adjacent to the third wiring L ₃ can be increased, It was succeeded in increasing the amount of overlap of the sweep traces in the second wiring (L ₂ ) and the fourth wiring (L ₄ ). That is, in order to increase the degree of freedom of the shapes of the other two adjacent wiring lines, the amount of overlap in the sweep trace of one resistance heating wiring can be actively reduced.

<Embodiment 4>

A plan view schematically showing the heater of Embodiment 4 is shown in FIG. 11.

The heater of Embodiment 4 includes a base body 11 and six resistance heating wires 12 each receiving power separately on the base body 11. All of these resistance heating wires ₁₂ include three rows of horizontal wiring sections I have (Y). All of _the horizontal wiring portions And, the horizontal wiring portion (X) is electrically connected by the vertical wiring portion (Y) and is formed in a sinuous shape.

In addition, these six resistance heating wirings 12 are arranged in the width direction D ₂ perpendicular to the sweep direction D ₁ , from the left side of FIG. 11 , the first wiring L ₁ , the second wiring L _{2 , and the second wiring L 2} . The 3rd wire (L ₃ ), the 4th wire (L ₄ ), the 5th wire (L ₅ ), and the 6th wire (L ₆ ) are arranged side by side in that order, of which the 2nd wire (L ₂ ) and the 5th wire The wiring (L ₅ ) has a pattern (P ₁ ) in which the second row horizontal wiring portion (X ₂ ) is formed shorter than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ). . In addition, the third wiring (L ₃ ) has a pattern (P 2 ) in which the second row horizontal wiring portion (X ₂ ) is formed longer than the first row horizontal wiring portion (X ₁ ) and the third row horizontal wiring portion (X ₃ ) _. has. That is, the heater 1 of Embodiment 4 simultaneously has both the pattern P ₁ and the pattern P ₂ as different resistance heating wires. And, the second wiring L _{2 having the pattern P 1 and} the third wiring L ₃ having the pattern P ₂ are arranged adjacent to each other.

Additionally, like the heaters of Embodiments 1 to 3, there is an opposing location A as an opposing location between the first wiring L ₁ and the second wiring L ₂ , and the second wiring L ₂ and the third wiring It has an opposing location B as an opposing location for (L ₃ ), and an opposing location C as an opposing location for the third wiring L ₃ and the fourth wiring L ₄ . And, the sweep trace T _B is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the side of the sweep trace T _A. That is, the gap distance W _AB between the sweep traces T _A and the sweep traces T _B and the gap distance W _BC between the sweep traces T _B and the sweep traces T _C are W _AB <W _BC .

In addition, in the heater of this embodiment 4, the third wiring L ₃ and the fourth wiring L ₄ have an opposing location A' as an opposing location, and the fourth wiring L ₄ and the fifth wiring L 4 have an opposing location A'. It has an opposing location B' as an opposing location for L ₅ ), and an opposing location C' as an opposing location for the fifth wiring L ₅ and the sixth wiring L ₆ (third wiring L It is possible to replace ₃ ) with the first wiring, the fourth wiring (L ₄ ) with the second wiring, the 5th wiring (L ₅ ) with the third wiring, and the 6th wiring (L ₆ ) with the fourth wiring). In addition, the sweep trace T _B' is located between the sweep trace T _{A '} and the sweep trace T _{C '} , and is positioned biased toward the side of the sweep trace T _{C '} . That is, the clearance distance W _AB of the sweep trajectory T _A and the sweep trajectory T _B and the clearance distance W _BC of the sweep trajectory T _B and the sweep trajectory T _C are W _AB >W _BC .

In this way, in the heater of this Embodiment 4, two sets of opposing locations (A) to (C) are provided in one heater, and in any of these opposing locations (A) to (C), a sweep locus is formed. By positioning T _B biased toward either the sweep trace T _A or the sweep trace T _C , the opposing points are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D 1 , while preventing them from appearing regularly in the sweep direction D ₁ as a whole. It has a dense resistance heating wiring pattern. And, as a result, even if it is a narrow heater with only three stages _of horizontal wiring section

<Embodiment 5>

A plan view schematically showing the heater of Embodiment 5 is shown in FIG. 12.

The heater of Embodiment 5 includes a base body 11 and five resistance heating wires 12 each receiving power separately on the base body 11. All of these resistance heating wires ₁₂ are connected to four rows of horizontal wiring sections It has a longitudinal wiring section (Y). All of _the horizontal wiring portions And, the horizontal wiring portion (X) is electrically connected by the vertical wiring portion (Y) and is formed in a sinuous shape.

In addition, these five resistance heating wires 12 are arranged in the width direction D ₂ perpendicular to the sweep direction D ₁ , from the left side of FIG. 12 , the first wiring L ₁ , the second wiring L ₂ , and the third wiring L 1 . The wiring (L ₃ ), the fourth wiring (L ₄ ), and the fifth wiring (L ₅ ) are arranged side by side in that order, of which the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring are (L ₄ ) includes both the pattern P ₁ and the pattern P ₂ in one resistive heating wire 12 .

That is, the second wiring (L ₂ ) has a pattern (P ₁ ) in which the second row horizontal wiring part (X ₂₂ ) is shorter than the first row horizontal wiring part (X ₂₁ ) and the third row horizontal wiring part (X ₂₃ ). In addition, the third row horizontal wiring portion (X ₂₃ ) has a pattern (P ₂ ) formed to be longer than the second row horizontal wiring portion (X ₂₂ ) and the fourth row horizontal wiring portion (X ₂₄ ). Similarly, the third wiring (L ₃ ) has a pattern (P ₂ ) in which the second row horizontal wiring portion (X ₃₂ ) is formed longer than the first row horizontal wiring portion (X ₃₁ ) and the third row horizontal wiring portion (X ₃₃ ). In addition, the third row horizontal wiring part (X ₃₃ ) has a pattern (P ₁ ) formed shorter than the second row horizontal wiring part (X ₃₂ ) and the fourth row horizontal wiring part (X ₃₄ ). Additionally, the fourth wiring (L ₄ ) has the same shape as the second wiring (L ₂ ).

That is, the heater 1 of Embodiment 5 has one resistance heating wire on both the pattern P ₁ and the pattern P ₂ at the same time, and these resistance heating wires are arranged adjacent to each other, so that the pattern P ₁ ) and the pattern (P ₂ ) are arranged adjacent to each other.

In addition, the heater of Embodiment 5, like the heater of Embodiments 1 to 3, has an opposing location A as an opposing location between the first wiring L ₁ and the second wiring L ₂ , and a second wiring (L 2 ). It has a facing point B as a facing point between L ₂ ) and the third wiring L ₃ , and has a facing point C as a facing point between the third wiring L ₃ and the fourth wiring L ₄ . . And, the sweep trace T _B is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the side of the sweep trace T _A. That is, the gap distance W _AB between the sweep traces T _A and the sweep traces T _B and the gap distance W _BC between the sweep traces T _B and the sweep traces T _C are W _AB <W _BC .

In addition, as shown in FIG. 13, the heater of Embodiment 5 includes five resistance heating wires 12 in the width direction D ₂ , from the left side of FIG. 13, the S wire ( _LS ) and the T wire ( L _T ) {The T wiring is also the first wiring (L ₁ ) for the opposing locations (A) to (C)}, the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring If replaced by being arranged side by side in the order of the wirings L ₄ , the first wiring L ₁ and the second wiring L ₂ have an opposing location A as an opposing location, and the second wiring L ₂ It has an opposing location B as an opposing location for the third wiring L ₃ , and an opposing location C as an opposing location for the third wiring L ₃ and the fourth wiring L ₄ . And, the sweep trace T _B is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the side of the sweep trace T _A. That is, the gap distance W _AB between the sweep traces T _A and the sweep traces T _B and the gap distance W _BC between the sweep traces T _B and the sweep traces T _C are W _AB <W _BC .

In this way, the heater of the fifth embodiment is, for example, two of the set of opposing locations (A) to (C) shown in FIG. 12 and the set of opposing locations (A) to (C) shown in FIG. 13. The tank is provided in one heater, and at any of these opposing locations (A) to (C), the sweep trace T _B is positioned with a bias toward the sweep trace T _A , so that the opposing locations do not overlap in the width direction D ₂ It is dispersed so as not to occur, preventing it from appearing regularly in the sweep direction D ₁ , and forming a dense resistance heating wiring pattern as a whole.

In addition, the heater of Embodiment 5, as shown in FIG. 12, has a vertical wiring connecting the first row horizontal wiring portion (X ₁₁ ) and the second row horizontal wiring portion (X ₁₂ ) of the first wiring (L ₁ ). A vertical wiring portion connecting the line portion (Y ₁₁₂ ) and the first row horizontal wiring portion (X ₂₁ ) and the second row horizontal wiring portion (X ₂₂ ) of the second wiring (L ₂ ) adjacent to the first wiring (L ₁ ). (Y ₂₁₂ ) faces each other with a gap to form an opposing location D. In addition, the vertical wiring portion (Y ₁₃₄ ) connecting the third row horizontal wiring portion (X ₁₃ ) and the fourth row horizontal wiring portion (X ₁₄ ) of the first wiring (L ₁ ), and the second wiring (L ₂ ). The vertical wiring portion _{Y 234 connecting the} third row horizontal wiring portion And the sweep trace T D of the gap at the opposing location _D and the sweep trace T _E of the gap at the opposing location E are spaced apart in the width direction so as not to overlap. That is, a gap distance W _DE is formed between the sweep trace T _D and the sweep trace T _E , and W _DE is >0 μm.

Likewise, the heater of Embodiment 5, as shown in FIG. 12, has a vertical wiring connecting the first row horizontal wiring portion (X ₃₁ ) and the second row horizontal wiring portion (X ₃₂ ) of the third wiring (L ₃ ). A vertical wiring portion connecting _the line portion (Y ₃₁₂ ) and the first row horizontal wiring portion (X ₄₁ ) and the second row horizontal wiring portion (X ₄₂ ) of the fourth wiring (L ₄ ) adjacent to the third wiring (L 3 ). (Y ₄₁₂ ) faces each other with a gap to form an opposing location D'. In addition, the vertical wiring portion (Y ₃₃₄ ) connecting the third row horizontal wiring portion (X ₃₃ ) and the fourth row horizontal wiring portion (X ₃₄ ) of the third wiring (L ₃ ), and the fourth wiring (L ₄ ). The vertical wiring portion (Y ₄₃₄ ) connecting the third row horizontal wiring portion (X ₄₃ ) and _the fourth row horizontal wiring portion ( And the sweep trace T _{D' of the gap at the opposing location D'} and the sweep trace T _{E '} of the gap at the opposing location E' are spaced apart in the width direction so as not to overlap. That is, a gap distance W _{D'E '} is formed between the sweep trace T _D' and the sweep trace T _{E '} , and W _{D'E '} is >0 μm.

In this way, the heater of the present embodiment 5 includes two sets of opposing locations (D) and (E) in one heater, and in these opposing locations (D) and (E), the sweep trajectory T _D and sweep traces T _E are distributed so as not to overlap in the width direction D ₂ , forming a dense resistance heating wiring pattern as a whole.

That is, the heater of Embodiment 5 is provided with five resistance heating wires 12 that each receive power separately, and the heating area in the sweep direction D ₁ is shared between the resistance heating wires, and the opposing points are They are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D ₁ , while forming a dense resistance heating wiring pattern as a whole. As a result, even if it is a narrow heater with only four stages of horizontal _wiring section

In addition, the opposing portions (D) (formed by vertical wiring Y ₁₁₂ and vertical wiring Y ₂₁₂ ) and (E) (formed by vertical wiring Y ₁₃₄ and vertical wiring Y ₂₃₄ ) in FIG. 12 of the heater of Embodiment 5. The set is the opposing portions (D) (formed by vertical wiring Y _S12 and Y _{S12) and (E) (formed by vertical wiring Y S12 and} vertical wiring Y _S12) in FIG. 13 of the heater of Embodiment 5. corresponds to a set of formations). That is, the S wiring ( _LS ) in FIG. 13 corresponds to the first wiring (L ₁ ) in FIG. 12, and the T wiring (L _T ) in FIG. 13 corresponds to the second wiring (L ₂ ) in FIG. 12. I'm doing it.

<Embodiment 6>

A plan view schematically showing the heater of Embodiment 6 is shown in FIG. 14.

The heater of Embodiment 6 includes a base 11 and six resistance heating wires 12 each receiving power separately on the base 11. All of these resistance heating wires ₁₂ are connected to four rows of horizontal wiring sections It has a longitudinal wiring section (Y). All of _the horizontal wiring portions And, the horizontal wiring portion (X) is electrically connected by the vertical wiring portion (Y) and is formed into a sinuous shape.

In addition, these six resistance heating wires 12 are arranged in the width direction D ₂ perpendicular to the sweep direction D ₁ , from the left side of FIG. 14 , the S wiring _LS , the T wiring _LT , and the The first wiring (L ₁ ), the second wiring (L ₂ ), the third wiring (L ₃ ), and the fourth wiring (L ₄ ) are arranged side by side in that order, of which the T wiring (L T) and the first wiring (L _T ) are arranged side by side in that order. The wiring (L ₁ ), the second wiring (L ₂ ), and the third wiring (L ₃ ) have both patterns (P ₁ ) and a pattern (P ₂ ) in one resistance heating wiring (12). (Same as described in Embodiment 5).

That is, the heater 1 of Embodiment 6 has one resistance heating wire for both the pattern P ₁ and the pattern P ₂ at the same time, and these resistance heating wires (the T wire L _T and the first wire L ₁ , the second wiring L ₂ and the third wiring L ₃ ) are arranged adjacent to each other, so that the pattern P ₁ and the pattern P ₂ are arranged adjacent to each other.

In addition, the heater of Embodiment 6, like the heater of Embodiments 1 to 3, has an opposing location A as an opposing location between the first wiring L ₁ and the second wiring L ₂ , and a second wiring (L 2 ). There is an opposing location B as an opposing location between the third wiring L2) and the third wiring L3, and an opposing location C as an opposing location between the third wiring L3 and the fourth wiring L4. And, the sweep trace T _B is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the side of the sweep trace T _A. That is, the gap distance W _AB between the sweep traces T _A and the sweep traces T _B and the gap distance W _BC between the sweep traces T _B and the sweep traces T _C are W _AB <W _BC .

In addition, although not shown because of complexity, there is an opposing location A as an opposing location between the S wiring _LS and the T wiring _LT , and the T wiring _LT and the first wiring L ₁ ), there is an opposing location B as an opposing location, and an opposing location C is provided as an opposing location between the first wiring L ₁ and the second wiring L ₂ . And, the sweep trace T _B is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the sweep trace T _A (W _AB <W _BC ). In addition, there is an opposing point A as an opposing point between the T wiring L _T and the first wiring L ₁ , and an opposing point A as an opposing point between the first wiring L ₁ and the second wiring L ₂ . (B), and has an opposing location (C) as an opposing location between the second wiring (L ₂ ) and the third wiring (L ₃ ). And, the sweep trace T _B is located between the sweep trace T _A and the sweep trace T _C , and is also positioned biased toward the sweep trace T _A (W _AB <W _BC ).

In this way, the heater of the present embodiment 6 includes three sets of opposing locations (A) to (C) in one heater, and the sweep locus is shown in any of these opposing locations (A) to (C). By positioning T _B with a bias toward the side of the sweep trajectory T _A , opposing locations are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D ₁ , and forming a dense resistance heating wiring pattern as a whole.

In addition, the heater of Embodiment 6, as shown in FIG. 14, has a vertical wiring connecting the first row horizontal wiring portion (X _S1 ) and the second row horizontal wiring portion (X _S2 ) of the S wiring ( _LS ). A vertical wiring portion connecting the line portion (Y _S12 ) and the first row horizontal wiring portion (X _T1 ) and the second row horizontal wiring portion (X _T2 ) of the T wiring (L _T ) adjacent to the S wiring (L _S ). (Y _T12 ) is opposed to each other with a gap between them, forming an opposing location D. In addition, the vertical wiring part (Y _S34 ) connecting the third row horizontal wiring part (X _S3 ) and the fourth row horizontal wiring part (X _S4 ) of the S wiring ( _LS ), and the T wiring (L _T ) The vertical wiring portion Y _{T34 connecting the third row horizontal wiring portion X T3 and the} fourth row horizontal wiring portion And the sweep trace T D of the gap at the opposing location _D and the sweep trace T _E of the gap at the opposing location E are spaced apart in the width direction so as not to overlap. That is, a gap distance W _DE is formed between the sweep trace T _D and the sweep trace T _E , and W _DE is >0 μm.

In addition, although not shown because of complexity, a vertical wiring portion (Y ₁₁₂ ) connecting the first row horizontal wiring portion (X ₁₁ ) and the second row horizontal wiring portion (X ₁₂ ) of the first wiring (L _{1 )} ; The _{vertical wiring part (Y 212 ) connecting the first row horizontal wiring part (X 21 ) and the second row horizontal wiring part (X 22 ) of the second wiring (L 2 ) adjacent} to the first wiring (L ₁ ) has a gap. They are opposed to each other to form a facing location (D). In addition, the vertical wiring portion (Y ₁₃₄ ) connecting the third row horizontal wiring portion (X ₁₃ ) and the fourth row horizontal wiring portion (X ₁₄ ) of the first wiring (L ₁ ), and the second wiring (L ₂ ). The vertical wiring portion _{Y 234 connecting the} third row horizontal wiring portion And the sweep trace T D of the gap at the opposing location _D and the sweep trace T _E of the gap at the opposing location E are spaced apart in the width direction so as not to overlap. That is, a gap distance W _DE is formed between the sweep trace T _D and the sweep trace T _E , and W _DE is >0 μm.

Likewise, the vertical wiring part (Y ₃₁₂ ) connecting the first row horizontal wiring part (X ₃₁ ) and the second row horizontal wiring part (X ₃₂ ) of the third wiring (L ₃ ), and the third wiring (L ₃ ). The vertical wiring portion (Y ₄₁₂ ) connecting the first-row horizontal wiring portion _{(X 41 )} and the second- _row horizontal wiring portion ( is forming. In addition, the vertical wiring portion (Y ₃₃₄ ) connecting the third row horizontal wiring portion (X ₃₃ ) and the fourth row horizontal wiring portion (X ₃₄ ) of the third wiring (L ₃ ), and the fourth wiring (L ₄ ). The vertical wiring portion (Y ₄₃₄ ) connecting the third row horizontal wiring portion (X ₄₃ ) and _the fourth row horizontal wiring portion ( And the sweep trace T D of the gap at the opposing location _D and the sweep trace T _E of the gap at the opposing location E are spaced apart in the width direction so as not to overlap. That is, a gap distance W _DE is formed between the sweep trace T _D and the sweep trace T _E , and W _DE is >0 μm.

In this way, the heater of the sixth embodiment includes three sets of opposing locations (D) and (E) in one heater, and in these opposing locations (D) and (E), the sweep trajectory T _D and sweep traces T _E are distributed so as not to overlap in the width direction D ₂ , forming a dense resistance heating wiring pattern as a whole.

That is, the heater of Embodiment 6 is provided with six resistance heating wires 12 that each receive power separately, and the heating area in the sweep direction D ₁ is shared between the resistance heating wires, and the opposing points are They are distributed so as not to overlap in the width direction D ₂ , preventing them from appearing regularly in the sweep direction D ₁ , while forming a dense resistance heating wiring pattern as a whole. As a result, even if it is a narrow heater with only four stages of horizontal _wiring section

<Embodiment 7>

A plan view schematically showing the heater of Embodiment 7 is shown in FIG. 15.

The heater of Embodiment 7 exemplifies the heater of Embodiment 1 in which the resistance heating wiring 12 is provided with a power supply wiring portion R. As shown in FIG. 15, the power supply wiring portion R can be patterned parallel to the sweep direction D ₁ to lead to the edge of the base 11. In the case of having such a power supply wiring portion R, the power supply wiring portion R may be patterned parallel to the sweep direction D ₁ as described above, or may be inclined in the same manner as the vertical wiring portion Y.

[2] Fixing device

The fixing device provided with this heater can have a configuration appropriately selected depending on the heating object, fixing means, etc. For example, in the case of fixing toner or the like to a recording medium such as paper by providing a fixing means involving compression, or in the case of joining a plurality of members, a heating unit including a heater and a pressing unit are provided. This can be done with a fixing device. Of course, fixation means that do not involve compression can also be used. In the present invention, it is preferable to use a fixing device 5 that fixes an unfixed image containing toner formed on the surface of a recording medium such as paper or film to a recording medium.

Fig. 16 shows the main part of the fixing device 5 installed in the electrophotographic image forming apparatus. The fixing device 5 includes a rotatable fixing roll 51 and a rotatable pressurizing roll 54, and the heater 1 is disposed inside the fixing roll 51. The heater 1 is preferably disposed close to the inner surface of the fixing roll 51.

The heater 1 is fixed to the inside of a heater holder 53 containing a material capable of conducting the heat generated by the heater 1, such as the fixing means 5 shown in FIG. 18, so that the heater 1 ) can also be structured to transmit the heat generated from the inside of the fixing roll 51 to the outer surface.

Fig. 17 also shows the main part of the fixing device 5 installed in the electrophotographic image forming apparatus. The fixing device 5 includes a rotatable fixing roll 51 and a rotatable pressurizing roll 54, and a heater 1 and a pressurizing roll 54 that transfer heat to the fixing roll 51. A fixing pad 52 for pressure contacting the recording medium is provided inside the fixing roll 51. The heater 1 is arranged along the cylindrical surface of the fixing roll 51.

In the fixing device 5 shown in Figure 16 or Figure 17, the heater 1 is heated by applying voltage from a power supply device (not shown), and the heat is transmitted to the fixing roll 51. Then, when a recording medium having an unfixed toner image on its surface is supplied between the fixing roll 51 and the pressing roll 54, the pressure-welded portion of the fixing roll 51 and the pressing roll 54 In this case, the toner melts and a fixed image is formed. Since it has a pressure contact portion of the fixing roll 51 and the pressure roll 54, they rotate together. As described above, the heater 1 suppresses the local temperature rise that tends to occur when using small recording media, so temperature unevenness in the fixing roll 51 is unlikely to occur, and fixing can be performed uniformly. there is.

Another form of the fixing device provided with the present heater 1 may be a mold having an upper mold and a lower mold, with a heater disposed inside at least one of the upper mold and the lower mold.

The fixing device equipped with this heater (1) is suitable for installation in image forming devices such as electrophotographic printers and copiers, as well as household electrical appliances, business and laboratory precision equipment, etc. as a heat source for heating and thermal insulation. do.

[3] Image forming device

The image forming apparatus provided with this heater can have an appropriately selected configuration depending on the object to be heated, the purpose of heating, etc. In the present invention, as shown in Figure 18, an imaging means for forming an unfixed image on the surface of a recording medium such as paper or film, and a fixing means for fixing the unfixed image on the recording medium. (5), and the fixing means (5) is preferably an image forming apparatus (4) equipped with this heater (1). The image forming apparatus 4 may be configured to include, in addition to the above means, recording medium transport means and control means for controlling each means.

Fig. 18 is a schematic diagram showing main parts of the electrophotographic image forming apparatus 4. The imaging means may be either a method with a transfer drum or a method without a transfer drum, but Fig. 18 shows a form with a transfer drum.

In the imaging means, while rotating, the charged surface of the photosensitive drum 44, which has been charged to a predetermined potential by the charging device 43, is irradiated with a laser output from the laser scanner 41, and the photosensitive drum 44 is charged to a predetermined potential by the charging device 43. An electrostatic latent image is formed by the supplied toner. Subsequently, the toner image is transferred to the surface of the transfer drum 46 linked with the photosensitive drum 44 using the potential difference. Thereafter, the toner image is transferred to the surface of the recording medium supplied between the transfer drum 46 and the transfer roll 47, and a recording medium having an unfixed image is obtained. Toner is particles containing a binder resin, a colorant, and additives, and the melting temperature of the binder resin is usually 90°C to 250°C. Additionally, the surfaces of the photosensitive drum 44 and the transfer drum 46 may be provided with a cleaning device for removing unsoluble toner and the like.

The fixing means 5 can have the same configuration as the fixing device 5, and includes a pressurizing roll 54 and a heater holder 53 holding a heater 1 of a feed direction energization type inside. and a fixing roll (51) interlocked with the pressurizing roll (54). A recording medium containing an unfixed image from the imaging means is supplied between the fixing roll 51 and the pressing roll 54. The heat of the fixing roll 51 melts the toner image on the recording medium, and the melted toner is pressed at the pressure contact portion of the fixing roll 51 and the pressing roll 54, thereby forming the toner image. It is fixed on the recording medium. In the fixing means 5 in Fig. 18, instead of the fixing roll 51, a fixing belt with a heater 1 disposed close to it may be provided.

In general, when the temperature of the fixing roll 51 becomes uneven and the amount of heat supplied to the toner is too small, the toner peels off from the recording medium, and on the other hand, when the amount of heat is too large, the toner falls off the fixing roll 51. There are cases where the fixing roll 51 rotates and is re-attached to the recording medium. According to the fixing means 5 provided with the heater of the present invention, the problem can be suppressed because the temperature is quickly adjusted to a predetermined temperature.

The image forming apparatus of the present invention suppresses excessive temperature increase in non-notification areas during use, and is suitable for electrophotographic printers, copiers, etc.

[4] Heating device

The heating device including this heater can be configured to be appropriately selected depending on the size or shape of the object to be heated. In the present invention, for example, it can be configured to include a housing portion, a sealable window portion disposed for loading and unloading of heat-treated objects, and a movable heater portion disposed inside the housing portion. If necessary, inside the housing, there is a heat-treated object installation section that places the heat-treated object, an exhaust section that discharges gas when the gas is discharged by heating the heat-treated object, and a device that adjusts the pressure inside the housing. , a pressure adjusting unit such as a vacuum pump, etc. may be provided. In addition, heating may be performed while the object to be heat treated and the heater unit are fixed, or may be performed while moving either one.

This heating device is suitable as a device for drying an object to be heat-treated containing water, an organic solvent, etc. at a desired temperature. Additionally, it can be used as a vacuum dryer (reduced pressure dryer), pressure dryer, dehumidifying dryer, hot air dryer, explosion-proof dryer, etc. Additionally, it is suitable as a device for baking unfired materials such as LCD panels and organic EL panels at a desired temperature. And, it can be used as a reduced pressure calciner, a pressure calciner, etc.

In addition, the present invention is not limited to the specific embodiments described above, and various modified embodiments can be made within the scope of the present invention depending on the purpose and use.

1: heater
11: Airframe
12: Resistance heating wiring
X: Horizontal wiring section
Y: Vertical wiring section
2: Heated object
4: Image forming device
41: Laser scanner
42: mirror
43: charging device
44: photosensitive drum
45: developer
46: warrior drum
47: transfer roll
5: Fixing device (fixing means)
51: fixing roll
52: fixed pad
53: heater holder
54: Roll for pressurization
P: recording medium
D ₁ : Sweep direction
D ₂ : Width direction

Claims (10)

A heater that heats the object to be heated by sweeping at least one of the object to be heated and the main heater in a sweep direction while facing the object to be heated,
Equipped with a body and a plurality of resistance heating wires on the body, each receiving power separately,
The resistance heating wiring has at least three rows of horizontal wiring portions arranged side by side in the sweep direction in the order of a first row, a second column, and a third column, and a vertical wiring portion connecting the horizontal wiring portions, and is sinuous. It is formed into a shape,
A heater, characterized in that at least one of the resistance heating wirings has one of the patterns (P ₁ ) below or the patterns (P ₂ ) below.
(P ₁ ): A pattern in which the second row horizontal wiring part (X ₂ ) is formed shorter than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ).
(P ₂ ): A pattern in which the second row horizontal wiring part (X ₂ ) is formed longer than the first row horizontal wiring part (X ₁ ) and the third row horizontal wiring part (X ₃ ). According to paragraph 1,
A resistive heating wire having the pattern (P ₁ ) above and a resistance heating wire on both sides of the resistive heating wire having the pattern (P ₂ ),
A heater in which a resistance heating wire having the pattern (P ₁ ) and a resistance heating wire having the pattern (P ₂ ) are arranged adjacent to each other. According to claim 1 or 2,
The resistance heating wiring is arranged in the following order: first wiring (L ₁ ), second wiring (L ₂ ), third wiring (L ₃ ), and fourth wiring (L ₄ ) in the width direction perpendicular to the sweep direction. is arranged, and has at least four of the resistance heating wires,
A vertical wiring part (Y ₁₁₂ ) connecting the first row horizontal wiring part (X ₁₁ ) and the second row horizontal wiring part (X ₁₂ ) of the first wiring (L ₁ ), and the second wiring (L ₂ ) The vertical wiring portion (Y 212 ) connecting the first row horizontal wiring portion (X ₂₁ ) and the second row horizontal wiring portion (X ₂₂ ) has _an opposing location A facing each other with a gap,
A vertical wiring portion (Y ₂₂₃ ) connecting the second row horizontal wiring portion (X ₂₂ ) and the third row horizontal wiring portion (X ₂₃ ) of the second wiring (L ₂ ), and the third wiring (L ₃ ) The vertical wiring portion (Y ₃₂₃ ) connecting _{the second row horizontal wiring portion (X 32 )} and the third row horizontal wiring portion (
A vertical wiring part (Y ₃₁₂ ) connecting the first row horizontal wiring part (X ₃₁ ) and the second row horizontal wiring part (X ₃₂ ) of the third wiring (L ₃ ), and the fourth wiring (L ₄ ) The vertical wiring portion (Y ₄₁₂ ) connecting the first row horizontal wiring portion (X ₄₁ ) and _the second row horizontal wiring portion (
The sweep trace of the gap at the opposing point (B) is located between the sweep trace of the gap at the opposing point (A) and the sweep trace of the gap at the opposing point (C), and the sweep trace of the gap at the opposing point (C) A heater positioned to be biased toward one of the sweep trace of the gap at A) and the sweep trace of the gap at the opposite location (C). According to claim 1 or 2,
Each of the resistance heating wirings connects the horizontal wiring portions to at least four rows of horizontal wiring portions arranged side by side in the sweep direction in the order of the first to third columns and the fourth column. The vertical wiring portion is connected to form a sinuous shape,
A vertical wiring part (Y S12) connecting the first row horizontal wiring part (X _S1 ) and the second _row horizontal wiring part (X _S2 ) of a predetermined resistance heating wire ( _LS ) among the resistance heating wires, and The vertical wiring part (Y T12) connecting the first row horizontal wiring part (X _T1 ) and the second _row horizontal wiring part (X _T2 ) of the resistance heating wiring (L _T ) adjacent to the wiring (L _S ) faces each other with a gap. has an opposing point (D),
A vertical wiring part (Y _S34 ) connecting the third row horizontal wiring part (X _S3 ) and the fourth row horizontal wiring part (X _S4 ) of the resistance heating wiring (L _S ), and the resistance heating wiring (L _T ) The vertical wiring portion (Y _T34 ) connecting the third row horizontal wiring portion (X _T3 ) and the fourth row horizontal wiring portion (X _T4 ) has an opposing location (E) facing each other with a gap,
A heater in which a sweep trace of the gap at the opposing location (D) and a sweep trace of the gap at the opposing location (E) are spaced apart in the width direction so as not to overlap. According to claim 1 or 2,
A heater in which the horizontal wiring portion is formed to be longer than the vertical wiring portion. According to claim 1 or 2,
A heater in which at least some of the vertical wiring portions are inclined with respect to the sweep direction. According to claim 1 or 2,
The resistance heating wiring is a heater with a positive resistance heating coefficient. A fixing device comprising the heater according to claim 1 or 2. An image forming apparatus comprising the heater according to claim 1 or 2. A heating device comprising the heater according to claim 1 or 2.

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