JP3734970B2 - Image read / write integrated head and image processing apparatus having the same - Google Patents

Description

[0001]
【Technical field】
The present invention relates to an image reading / writing integrated head having both an image reading function and a printing function, and an image processing apparatus including the same.
[0002]
[Prior art]
Among image processing apparatuses, for example, a facsimile apparatus needs to have both an image reading function and a printing function. In many image processing apparatuses, the entire apparatus is required to be downsized. Therefore, conventionally, there is an image reading / writing integrated head H as shown in FIG. This conventional image reading / writing integrated head H includes a case 1e having a transparent cover 19e attached to the upper surface portion, and a substrate 4e attached to the bottom portion of the case 1e. A plurality of light receiving elements 2e and a plurality of heat generating elements 8e for printing are arranged and mounted on the front and back surfaces 40, 41 of the substrate 4e in a row extending in the longitudinal direction of the substrate 4e. Inside the case 1e, a light source 3e and an imaging lens 5e are incorporated, and light emitted from the light source 3e is applied to the image reading target area Se on the surface of the transparent cover 19e, and The light reflected from the region Se is configured to be guided to the plurality of light receiving elements 2e through the imaging lens 5e.
[0003]
The image reading / writing integrated head H can read an image of the document D arranged in the image reading target area Se by using a plurality of light receiving elements 2e. On the other hand, desired image data can be printed out on, for example, heat-sensitive recording paper K by using the plurality of heating elements 8e.
[0004]
[Problems to be solved by the invention]
However, the conventional image reading / writing integrated head H has the following problems.
[0005]
That is, conventionally, the plurality of light receiving elements 2e are mounted on the front surface 40 of the substrate 4e, whereas the plurality of heating elements 8e are mounted on the back surface 41 of the substrate 4e. For this reason, in the component mounting work on the board 4e, it is necessary to reverse the front and back of the board 4e when mounting the heating element 8e and the driving IC 80e after mounting the light receiving element 2e on the surface 40 of the board 4e. . In addition, it is necessary to previously form two types of wiring patterns, an image reading system and a print output system, on the substrate 4e. The operation of separately forming these two types of wiring patterns on both the front and back surfaces of the substrate 4e. It becomes complicated. Therefore, the productivity of the conventional image reading / writing integrated head H has been poor.
[0006]
Further, conventionally, when an image processing apparatus is actually manufactured using the image read / write integrated head H, a platen roller P for originals is used. ₁ In contrast to the image reading / writing integrated head H, the recording sheet platen roller P ₂ Must be arranged below the image reading / writing integrated head H. For this reason, the above two platen rollers P ₁ , P ₂ The entire mechanism combining the image read / write integrated head H is greatly bulky in the height direction, and there is room for improvement in terms of miniaturization.
[0007]
On the other hand, the image reading / writing integrated head is combined with the original platen roller and the recording paper platen roller as described above in actual use. Therefore, the image reading / writing integrated head is required to have a structure in which relative positioning and attachment thereof can be easily performed in relation to the original platen roller and the recording paper platen roller.
[0008]
The present invention has been conceived under such circumstances, in which the productivity of the image reading / writing integrated head is improved and the image processing device is configured by combining the image reading / writing integrated head with a platen roller. Therefore, it is an object of the present invention to make it possible to easily attach these parts and to reduce the overall size of the parts.
[0009]
DISCLOSURE OF THE INVENTION
In order to solve the above problems, the present invention takes the following technical means.
[0010]
That is, according to the first aspect of the present invention, an image reading / writing integrated head is provided. This image read / write integrated head is assembled to a substrate on which a plurality of light receiving elements and a plurality of printing elements are arranged in a row and mounted on the same surface, and to avoid the mounting area of the plurality of printing elements. A transparent cover in which an image reading target area by the plurality of light receiving elements is set and disposed on the one surface side of the substrate, the case, the substrate, and the assembly Platen roller support means provided integrally with or separately from any of the members and configured to support the platen roller disposed to face the plurality of printing elements or the transparent cover. It is characterized by being.
[0011]
In the image reading / writing integrated head provided by the present invention, since the case is provided at a position avoiding the plurality of printing elements, the recording paper is appropriately transferred to a position facing the plurality of printing elements. Thus, it is possible to perform print output processing of image data onto a recording sheet. Further, if the document is transferred to the surface of the transparent cover, the image of the document can be read using a plurality of light receiving elements. And in this invention, the following special effects are acquired.
[0012]
First, in the present invention, since a plurality of light receiving elements and a plurality of printing elements are mounted on the same side of the substrate, the mounting operation of the light receiving elements and the printing elements is different from the conventional one. This can be done without inverting the front and back of the substrate. Further, since the wiring patterns related to the light receiving element and the printing element may be formed on the same surface of the substrate, the wiring patterns can be formed simultaneously. Therefore, the productivity of the image reading / writing integrated head can be increased as compared with the conventional case.
[0013]
Second, since the present invention has a structure in which a transparent cover is disposed on the same side as one side of a substrate on which a plurality of printing elements are mounted, a platen roller for recording paper that faces the plurality of printing elements The document platen roller facing the transparent cover is also disposed on the same side of the substrate. Therefore, in the present invention, compared with the conventional one in which it is necessary to arrange two platen rollers on both sides of the image reading / writing integrated head, the overall size of the image reading / writing integrated head can be prevented from being large and bulky. The image processing apparatus configured using the above can be reduced in size or thickness.
[0014]
Third, since the image reading / writing integrated head is provided with the platen roller support means in the present invention, when the platen roller is attached so as to have a fixed relationship with the image reading / writing integrated head, The platen roller can be mounted or positioned using the platen roller support means. Therefore, it is not necessary to separately provide a means for supporting the platen roller, or the structure thereof can be simplified, and the structure of the entire image processing apparatus can be simplified. In addition, it is possible to improve the workability of assembling parts when manufacturing the image processing apparatus.
[0015]
In a preferred embodiment of the present invention, the platen roller support means is integrally molded with the case.
[0016]
According to such a configuration, the platen roller supporting means can be molded with the resin at the same time as the case, so that the manufacture thereof becomes easy. Further, since the total number of parts does not increase, the assembly workability of the image read / write integrated head can be improved.
[0017]
In another preferred embodiment of the present invention, the printing element is a heat generating element and is assembled with the heat sink in contact with the substrate, and the platen is partly attached to the heat sink. Roller support means is formed.
[0018]
According to such a configuration, the heat generated from the heating element can be released to the outside through the heat radiating plate, so that the heating element can be prevented from being overheated and the temperature thereof can be stabilized. The quality can be improved. In the above configuration, since the platen roller support means is formed using such a heat radiating plate, there is no need to use a dedicated part for forming the platen roller support means, and the number of parts can be increased. Can be suppressed.
[0019]
According to a second aspect of the present invention, an image processing apparatus is provided. This image processing apparatus is characterized by including the image reading / writing integrated head provided by the first aspect of the present invention.
[0020]
According to the second aspect of the present invention, the same effect as that obtained by the first aspect of the present invention can be expected.
[0021]
In a preferred embodiment of the present invention, the platen roller for a document facing the transparent cover and a platen roller for recording paper facing the plurality of printing elements are provided, and the platen roller support means Is fitted to the shaft portion of the recording paper platen roller so that the image reading / writing integrated head can rotate around the shaft portion of the recording paper platen roller, and the image reading / writing integrated head is The cover is urged by an elastic member in the rotational direction pressed against the original platen roller.
[0022]
According to such a configuration, the recording paper platen roller can be positioned relative to the image reading / writing integrated head by being supported by the platen roller supporting means provided in the image reading / writing integrated head. Thus, the pressing force of the recording paper platen roller for a plurality of printing elements and recording paper can be appropriately set to a desired state. Further, for the original platen roller, by adjusting the elastic force and position of the elastic member that urges the image reading / writing integrated head in a certain direction so as to press the transparent cover against the original platen roller, It is possible to appropriately set the pressing force on the document to a desired state.
[0023]
Other features and advantages of the present invention will become more apparent from the following description of embodiments of the invention.
[0024]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, a preferred embodiment of the present invention will be specifically described with reference to the drawings.
[0025]
FIG. 1 is a perspective view showing an example of an image reading / writing integrated head according to the present invention. 2 is an exploded perspective view of the image reading / writing integrated head shown in FIG. 3 is a cross-sectional view taken along the line III-III in FIG. 4 is a cross-sectional view of an essential part of IV-IV in FIG. 5 is a cross-sectional view taken along the line VV in FIG.
[0026]
2 and 3, the image reading / writing integrated head A of this embodiment includes a case 1, a transparent cover 19, a lens array 5, an antireflection member 6, a substrate 4, a heat sink 7, and others. Each component described later is configured.
[0027]
The substrate 4 is made of, for example, ceramic and has a plate shape having a rectangular shape in plan view. A plurality of light sources 30, a plurality of light receiving elements 3, a plurality of driving ICs 80, and a plurality of heating elements 8 are mounted on the surface 4 a (one side) of the substrate 4.
[0028]
The plurality of light sources 30 are configured using, for example, LED chips, and are mounted in a row at an appropriate interval in the longitudinal direction of the substrate 4. The plurality of light receiving elements 3 are elements having a photoelectric conversion function, and are mounted in a row substantially parallel to the row of the plurality of light sources 30. The plurality of heating elements 8 correspond to an example of a printing element referred to in the present invention, and the manufacture thereof is performed by printing and baking a thick film resistance paste containing, for example, ruthenium oxide as a conductor component. 4 is formed by forming a linear heating resistor that extends in a series in the longitudinal direction, and forming a wiring pattern that electrically divides the heating resistor at regular intervals along the longitudinal direction. The plurality of drive ICs 80 are for controlling the heat generation drive of the plurality of heating elements 8 and, like the plurality of light sources 30, are arranged in rows at appropriate intervals in the longitudinal direction of the substrate 4. Has been implemented.
[0029]
The rows of the heating elements 8 are arranged at one side edge 4c extending in the longitudinal direction of the substrate 4 or in the vicinity thereof, whereas the rows of the driving IC 80, the light receiving elements 3, and the light sources 30 are The heater elements 8 are arranged closer to the other side edge 4d of the substrate 4 than the rows of the heat generating elements 8. On the surface 4a of the substrate 4, wiring patterns (not shown) related to the components mounted on the surface 4a are formed. One or a plurality of connectors (not shown) that are electrically connected to the wiring patterns are provided at appropriate positions on the substrate 4, and power is supplied from an external device to the components by wiring connection to the connectors. And various signals can be input and output.
[0030]
The heat radiating plate 7 is formed in a plate shape having substantially the same shape and size as the substrate 4, and is adhered to the back surface 4b of the substrate 4 through, for example, a double-sided adhesive tape or an adhesive. The heat radiating plate 7 is for releasing heat generated from the plurality of heating elements 8 to the outside, and is made of metal having high thermal conductivity.
[0031]
The case 1 is made of synthetic resin, and a recording paper platen roller P is provided at both ends in the longitudinal direction of the case 1. ₂ A pair of support portions 2 and 2 are integrally formed. These support portions 2 and 2 have a form projecting laterally from the outer surface 1a of the case 1, and on each upper part thereof, a recording paper platen roller P is provided. ₂ A concave portion 20 having an upper opening shape having a semicircular arc-shaped portion for fitting the shaft portion 90b is formed.
[0032]
The case 1 is assembled to the substrate 4 and the heat radiating plate 7 so as to avoid the place where the plurality of heating elements 8 are mounted and the vicinity thereof and cover the other portions of the surface 4a of the substrate 4. . A region of the substrate 4 where the plurality of heating elements 8 are mounted and a region in the vicinity thereof protrude to one side of the case 1, and the support portion 2 is on an extension line of the row of the plurality of heating elements 8 in plan view. , 2 are set so that the recesses 20 and 20 are located exactly. Supporting convex portions 21 and 21 are provided below the inwardly facing surfaces of the supporting portions 2 and 2, and both longitudinal ends of the heat sink 7 are placed on the supporting convex portions 21 and 21. Has been. Thereby, it becomes possible to assemble the three of the case 1, the substrate 4, and the heat sink 7 in a stable manner.
[0033]
The transparent cover 19 is for guiding a document D to be read, and an image reading target area S is set on the surface of the transparent cover 19. The transparent cover 19 is, for example, a highly transparent plate made of glass or synthetic resin. The transparent cover 19 is fitted into the concave portion 13 of the upper surface portion of the case 1 and is mounted on the surface 4 a side of the substrate 4. However, the upper surface portion of the case 1 and the concave portion 13 are inclined, and accordingly, the transparent cover 19 is also inclined. More specifically, the transparent cover 19 is inclined so that its height decreases as the distance from the one side edge 4c of the substrate 4 increases. Of the two outer side surfaces 1a and 1b in the width direction of the case 1, the outer side surface 1a closer to the heating element 8 is inclined so that the upper side is farther from the one side edge 4c of the substrate 4. Yes.
[0034]
In the lens array 5, a plurality of rod lenses 51 are held in a line in a long lens holder 50 made of synthetic resin. If the rod lens 51 is used as an image forming lens, it is possible to form an image of the document D on each light receiving element 3 at an equal magnification. However, other lenses may be used as a matter of course. The lens array 5 is fitted in a concave groove 12 provided opposite to the transparent cover 19 below the transparent cover 19. Of the surface of the transparent cover 19, a line-shaped region facing the lens array 5 is an image reading target region S.
[0035]
Inside the case 1, a first optical path 14a and a second optical path 14b for guiding the light emitted from the light source 30 are provided. The first optical path 14a is formed so as to penetrate in the vertical thickness direction of the case 1, and is an optical path that guides light emitted from the plurality of light sources 30 to the image reading target region S. The second optical path 14 b is formed including the concave groove 12, and guides light reflected by the document surface located in the image reading target region S onto the plurality of light receiving elements 3 through the lens array 5. It is an optical path. The case 1 is entirely made of a white resin having a high light reflectance. Therefore, the light emitted from the plurality of light sources 30 can be guided to the image reading target region S while being reflected by the white wall surface of the first optical path 14a with high reflectance, and the light to the image reading target region S can be guided. It is possible to increase the irradiation efficiency.
[0036]
The light reflection preventing member 6 is made of synthetic resin such as polycarbonate or ABS resin containing black pigment or glass powder, for example, and the surface of each part is black with high light absorption. The light reflection preventing member 6 is disposed in a recess 11 provided at the bottom of the case 1 so as to collectively surround the plurality of light receiving elements 3 and the plurality of drive ICs 80. More specifically, the light reflection preventing member 6 protrudes downward from the upper wall portion 60 positioned above the plurality of light receiving elements 3 and the plurality of drive ICs 80 and from both side edges of the upper wall portion 60 in the width direction. As shown in FIG. 2, the two side wall portions 61 a and 61 b have two side wall portions 61 c and 61 d that protrude downward from both longitudinal ends of the upper wall portion 60. The four side wall portions 61a to 61d surround the four sides of the plurality of light receiving elements 3 and the plurality of drive ICs 80, and their tip portions are all in contact with the surface 4a of the substrate 4, and external light is interposed between them. It is comprised so that the clearance gap used as an approach path may not arise as much as possible. Of the surface 4 a of the substrate 4, at least a portion in contact with each of the tip portions of the four side wall portions 61 a to 61 d is black having a high light absorption rate. In this way, even if a gap is generated between the surface 4a of the substrate 4 and the tip portions of the side wall portions 61a to 61d, most of the light from the outside that has entered the gap is caused by the black portion. The light can be absorbed, and a large amount of external light can be prevented from entering the region surrounded by the light reflection preventing member 6. The upper wall portion 60 is provided with a slit 63 so as not to block the second optical path 14b.
[0037]
As shown in FIG. 4, the light reflection preventing member 6 is formed by fitting a plurality of protrusions 64 provided on the upper wall portion 60 into a plurality of recesses 15 provided on the case 1. It is attached to the case 1. A plurality of clamp projections 65 each having a groove 65a at the tip are projected from one side edge of the light reflection preventing member 6 in the width direction. As clearly shown in FIG. 5, each of the clamp protrusions 65 clamps the rib 16 of the case 1 provided in the first optical path 14a from both sides in the thickness direction with an appropriate elasticity. . The light reflection preventing member 6 is also attached to the case 1 by the plurality of clamp protrusions 65, and is not displaced in the longitudinal direction or the width direction relative to the case 1. . A plurality of the ribs 16 are provided at appropriate intervals in the longitudinal direction of the first optical path 14a from the viewpoint of ensuring the rigidity of the case 1.
[0038]
FIG. 6 is an explanatory diagram showing an example of a schematic configuration of an image processing apparatus B configured to include the image read / write integrated head A.
[0039]
The image processing apparatus B includes an image read / write integrated head A and a document platen roller P that can be driven and rotated to transport the document D in a synthetic resin casing 9. ₁ , And a recording paper platen roller P that can be driven and rotated to transfer the recording paper K fed from the take-up roll R. ₂ Is built in. Document platen roller P ₁ The shaft portions 90a at both ends in the longitudinal direction are supported by bracket pieces 91a, and the roller main body portion is fixedly disposed at a position facing the image reading target area S of the transparent cover 19, or can be fixedly disposed. ing. The recording paper platen roller P ₂ The shaft portions 90b at both ends in the longitudinal direction are fitted into the concave portions 20 of the support portions 2 and 2 of the image reading / writing integrated head A, and the roller main body portion faces the plurality of heating elements 8. However, the recording paper platen roller P ₂ Is also supported by the bracket piece 91b and is fixedly arranged at a predetermined position in the housing 9 or can be fixedly arranged.
[0040]
The image read / write integrated head A includes the recording paper platen roller P. ₂ Is provided so as to be rotatable in the vertical direction indicated by the arrow Na around the shaft portion 90b. That is, the recording paper platen roller P ₂ Is held at a fixed position by the bracket 91b, while the image reading / writing integrated head A has the concave portions 20 of the supporting portions 2 and 2 so that the platen roller P for recording paper is used. ₂ Therefore, the image read / write integrated head A can be rotated around the shaft portion 90b. Below the heat radiating plate 7 of the image reading / writing integrated head A, a spring 92 is provided as an example of an elastic member for contacting the back surface of the heat radiating plate 7 and pressing the image reading / writing integrated head A. The spring 92 is disposed at a position biased toward the light receiving element 3 by an appropriate distance L from the center O of the shaft portion 90 in the width direction of the substrate 4 and the heat sink 7. Thus, the image reading / writing integrated head A has the surface of the transparent cover 19 on the platen roller P for the document. ₁ It is urged in the rotation direction (arrow Nb direction) pressed against.
[0041]
Next, operations of the image reading / writing integrated head A and the image processing apparatus B will be described.
[0042]
First, in the image processing apparatus B, since the image reading / writing integrated head A has both the image reading function and the printing function, the image reading of the document D and the image printing output on the recording paper K are performed individually or Can be done simultaneously. Document platen roller P ₁ And platen roller P for recording paper ₂ May be arranged on the same side of the image reading / writing integrated head A, that is, on the upper side. Therefore, these two platen rollers P ₁ , P ₂ And the image read / write integrated head A can be prevented from becoming large and bulky in the height direction of the image processing apparatus B, and the image processing apparatus B can be made thinner. Platen roller P for recording paper ₂ Since the outer surface 1a of the case 1 facing the surface is inclined, the recording paper platen roller P is disposed above the one side edge 4c of the substrate 4 protruding from the case 1. ₂ A relatively large space space can be secured for arranging the. Accordingly, the platen roller P for recording paper can be used without causing the side edge 4c of the substrate 4 to protrude from the case 1 so much. ₂ Can be disposed close to the case 1, which is more preferable in reducing the overall size.
[0043]
Image read / write integrated head A, original platen roller P ₁ , And platen roller P for recording paper ₂ Are required to be incorporated in the housing 9 so that they have a predetermined and accurate positional relationship. In contrast, the recording paper platen roller P ₂ And the image read / write integrated head A, the concave portions 20 of the support portions 2 and 2 of the image read / write integrated head A and the recording paper platen roller P ₂ These shaft portions 90b can be fitted to each other to be positioned. Accordingly, the image read / write integrated head A and the recording paper platen roller P are housed in the housing 9 accordingly. ₂ The work of aligning and incorporating them is facilitated. On the other hand, the platen roller P for originals ₁ , The transparent cover 19 always keeps the platen roller P for the document by the pressing force F of the spring 92. ₁ Therefore, the original D can be smoothly transferred so as to be in close contact with the surface of the transparent cover 19. In general, the thickness of the recording paper is substantially constant, but the document has various thicknesses. On the other hand, in this image processing apparatus B, the image reading / writing integrated head A rotates about the shaft portion 90b, whereby the original platen roller P ₁ Since the distance between the transparent cover 19 and the transparent cover 19 can be changed according to the thickness of the document D, it is possible to prevent the document D from being jammed.
[0044]
On the other hand, the image reading / writing integrated head A is mounted on the surface 4a of the substrate 4 for any of the plurality of light sources 30, the plurality of light receiving elements 3, the plurality of driving ICs 80, and the plurality of heating elements 8. Wiring patterns related to them are also formed on the surface 4a. Therefore, it is not necessary to invert the substrate 4 when mounting each component or for producing a wiring pattern, and the productivity can be increased. When the case 1 is assembled to the substrate 4 or the heat sink 7, the light reflection preventing member 6 is previously attached to the case 1 in the previous stage. The light reflection preventing member 6 includes a plurality of light receiving elements 3 and a plurality of driving devices. The IC 80 is arranged so as to surround the IC 80 as a whole, and does not cover only the plurality of light receiving elements 3 so as to partition the plurality of light receiving elements 3 and the plurality of driving ICs 80, for example. Therefore, it is possible to reduce the possibility that the light reflection preventing member 6 will unjustly contact the plurality of light receiving elements 3 and the driving IC 80.
[0045]
In the image processing apparatus B, the reading operation of the document D and the printing operation of the image on the recording paper K may be performed at the same time. On the other hand, the outer surface 1a of the case 1 has a platen roller P for recording paper at the top. ₂ The transparent cover 19 is inclined so as to move away from the recording platen roller P for recording paper. ₂ It is a structure that can be placed at a position away from the center. Further, the surface of the transparent cover 19 has a platen roller P for recording paper. ₂ It is inclined to face the opposite side. Therefore, the document platen roller P facing the transparent cover 19 is provided. ₁ About the platen roller P for recording paper ₂ It is possible to dispose as far as possible from. As a result, the original platen roller P ₁ Transport part and recording paper platen roller P ₂ Thus, the distance between the recording paper transporting part and the recording paper can be increased so that the original and the recording paper do not easily interfere with each other, and the image reading operation and the printing operation can be performed smoothly.
[0046]
In the image read / write integrated head A, since the periphery of the plurality of light receiving elements 3 is surrounded by the black light reflection preventing member 6 having a high light absorption rate, the plurality of light receiving elements pass from the document D through the lens array 5. It is possible to prevent light traveling toward the element 3 from being scattered and reflected around the plurality of light receiving elements 3. Further, the light reflection preventing member 6 allows light outside the case 1 to enter the mounting locations of the plurality of light receiving elements 3, or light emitted from the light source 30 travels directly toward the plurality of light receiving elements 3. It also plays a role to prevent this. Therefore, it is possible to prevent the plurality of light receiving elements 3 from receiving disturbance light or scattered light, and it is possible to obtain a high-quality read image with less noise.
[0047]
FIG. 7 is a perspective view showing another example of the image reading / writing integrated head according to the present invention. In the drawings after FIG. 7, the same parts as those of the previous embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0048]
The image read / write integrated head Aa shown in FIG. ₂ Is a structure in which support portions 2A and 2A for supporting the heat sink are provided using a heat sink 7A. More specifically, in the support portions 2A and 2A, both longitudinal end portions of the sheet metal heat dissipating plate 7A stacked on the back surface side of the substrate 4 are bent upward at the lateral sides of the substrate 4 in the longitudinal direction. And is formed integrally with the heat dissipation plate 7A. The support portions 2A and 2A are similar to the support portions 2 and 2 of the previous embodiment, and the recording paper platen roller P ₂ It has the recessed parts 20 and 20 which have a semicircular arc-shaped part which can insert | insert this axial part.
[0049]
In this image read / write integrated head Aa, as in the image read / write integrated head A of the previous embodiment, the support portions 2A and 2A are used to make a recording paper platen roller P. ₂ Recording platen roller P for recording paper ₂ And the plurality of heating elements 8 can be accurately and easily aligned. Of course, the platen roller P for recording paper ₂ Is fixed using another supporting means, the recording paper platen roller P ₂ The entire image reading / writing integrated head Aa can be rotated about the shaft portion 90b of the paper, and the transparent cover 19 is placed on the platen roller P for the document. ₁ It is also possible to bias the elastic member by using an elastic member so as to press it.
[0050]
In the image read / write integrated head Aa, the latching protrusions 74 and 74 whose front ends can be engaged with the recesses 18 and 18 provided at both ends in the longitudinal direction of the case 1A at both ends in the longitudinal direction of the heat radiating plate 7A. Are integrally formed. If it does in this way, the assembly of case 1 to heat sink 7A and substrate 4 can be made easy. As a means for facilitating the assembly of these parts, for example, as shown in FIG. 8, a means for integrally providing a latching protrusion 74a for latching on the back surface side of the heat radiating plate 7A as shown in FIG. You can also.
[0051]
As is apparent from the above-described embodiment, in the present invention, the platen roller support means may be provided not only in the case but also in the heat radiating plate. Further, the substrate constituting the image read / write integrated head and other members May be provided. Further, the platen roller support means is not necessarily formed integrally with a predetermined member such as a case or a heat radiating plate, and may be formed separately.
[0052]
Further, the platen roller support means may support the document platen roller instead of the recording paper platen roller. Therefore, the image reading / writing integrated head according to the present invention can be configured to include two types of platen roller support means for supporting both the recording paper platen roller and the document platen roller.
[0053]
Various modes are conceivable as modes for supporting the platen roller by the platen roller support means, but the specific mode of the present invention is not particularly limited. For example, in the structure shown in FIG. 6, the recording paper platen roller P fixedly held by the bracket 91b. ₂ Is further supported by the support portions 2 and 2, and the support portions 2 and 2 are so-called recording paper platen rollers P. ₂ It serves as a stopper for positioning and a member as a member for constituting the rotation fulcrum of the image reading / writing integrated head. However, in the present invention, without using the bracket 91b, the recording paper platen roller P is formed only by the support portions 2 and 2. ₂ It is possible to support the whole, and such a support structure may be used. Therefore, in the present invention, the specific shape of the platen roller support means is not limited to the above-described embodiment. For example, instead of the concave portion having the semicircular arc-shaped portion, the platen roller supporting means having a concave portion of another shape or the platen You may form as a thing which has a notch-shaped hole which can insert and support the axial part of a roller.
[0054]
In addition, the specific configurations of the image reading / writing integrated head and the image processing apparatus according to the present invention are not limited to the above-described embodiments, and various design changes can be made. For example, in the above embodiment, the light source 30 is mounted on the surface 4a of the substrate 4. However, in the present invention, instead of this, for example, the light source is replaced with a light receiving element or the like, similar to the conventional one shown in FIG. You may make it integrate in a case, without making it mount in the mounted board | substrate. Moreover, you may use light sources other than LED as a light source.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an example of an image reading / writing integrated head according to the present invention.
2 is an exploded perspective view of the image reading / writing integrated head shown in FIG. 1. FIG.
3 is a cross-sectional view taken along the line III-III in FIG.
4 is a cross-sectional view of an essential part of IV-IV in FIG. 1. FIG.
5 is a cross-sectional view taken along line VV in FIG.
6 is an explanatory diagram illustrating an example of a schematic configuration of an image processing apparatus configured to include the image reading / writing integrated head illustrated in FIG. 1;
FIG. 7 is a perspective view showing another example of an image reading / writing integrated head according to the present invention.
FIG. 8 is a perspective view of a main part showing another example of an image reading / writing integrated head according to the present invention.
FIG. 9 is a cross-sectional view showing an example of a conventional image reading / writing integrated head.
[Explanation of symbols]
1,1A, case
2,2A support (supporting means for platen roller)
3 Light receiving element
4 Substrate
4a Surface (of substrate)
7 Heat sink
8 Heating element (printing element)
30 Light source
92 Spring (elastic member)
A Image reading / writing integrated head
B Image processing device
D Manuscript
K recording paper
S Image reading target area
P ₁ Original platen roller
P ₂ Platen roller for recording paper

Claims (5)

A substrate having a plurality of light receiving elements and a plurality of printing elements arranged in a row and mounted on the same side;
A transparent cover that is assembled to the substrate so as to avoid a mounting area for the plurality of printing elements and in which an image reading target area by the plurality of light receiving elements is set is disposed on the one side of the substrate. A case that is worn,
The case, the substrate, and a member assembled thereto are integrally or separately provided, and are formed to be able to support the plurality of printing elements or the platen roller disposed to face the transparent cover. Platen roller support means;
An image read / write integrated head comprising: The image reading / writing integrated head according to claim 1, wherein the platen roller support means is resin-molded integrally with the case. The printing element is a heat generating element, and is assembled with the heat sink in contact with the substrate, and the platen roller support means is formed by a part of the heat sink. Item 2. The image reading / writing integrated head according to Item 1. An image processing apparatus comprising the image reading / writing integrated head according to claim 1. The document platen roller facing the transparent cover and the recording paper platen roller facing the plurality of printing elements, and the platen roller support means include the image read / write integrated head. The recording paper platen roller is fitted to the shaft portion of the recording paper platen roller so as to be rotatable around the shaft portion of the recording paper platen roller, and the image reading / writing integrated head is pressed against the original platen roller by the transparent cover. The image processing apparatus according to claim 4, wherein the image processing apparatus is biased by an elastic member in a rotating direction.

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