Light emitting device and drawing device

Abstract

An exposure device (40) as an example of a light-emitting device comprises: a base (42) composed of a metal block extending in one direction; a light-emitting portion (44) having a plurality of light sources (64) arranged in a staggered manner in one direction on a surface (42A) side of the base (42), wherein a plurality of light sources (64) arranged in one direction are supported on a support body (60) extending in one direction; and a handle portion (90) disposed at a lower side than a surface (42B) of the base (42), so that an operator can hold the handle portion (90) when the base (42) is placed on a plane.

Description

Technical Field

[0001] The present invention relates to a light emitting device and a drawing device. Background Art

[0002] The following Patent Document 1 discloses an exposure device, which includes: a plurality of first light emitting elements arranged in a first direction and emitting first light respectively; a first optical system arranged opposite to the plurality of first light emitting elements in a second direction intersecting the first direction, and imaging the plurality of first lights emitted from the plurality of first light emitting elements respectively; a first exposure head having a first joint and a first base supporting the plurality of first light emitting elements, the first optical system, and the first joint; a plurality of second light emitting elements arranged in the first direction and emitting second light respectively; a second optical system arranged opposite to the plurality of second light emitting elements in the second direction, and imaging the plurality of second lights emitted from the plurality of second light emitting elements respectively; and a second exposure head having a second joint engaged with the first joint, and a second base supporting the plurality of second light emitting elements, the second optical system, and the second joint. In the exposure device, the first joint is provided at a first position corresponding to the imaging position of the first optical system in the first base, and the second joint is provided at a second position corresponding to the imaging position of the second optical system in the second base.

[0003] Prior art literature

[0004] Patent Literature

[0005] Patent Document 1: Japanese Patent Application Publication No. 2017-177664 Summary of the invention

[0006] Problems to be solved by the invention

[0007] An object of the present invention is to provide a light emitting device and a drawing device in which an operator can easily hold a base body, compared with a case where the base body is placed on a flat surface and the back surface of the base body is flat.

[0008] Means for solving problems

[0009] The light-emitting device of the first embodiment comprises: a base body, which is composed of a metal block extending in one direction; a plurality of light-emitting parts, which are arranged in a staggered manner along the one direction on the surface side of the base body, and the plurality of light sources arranged in the one direction are supported on a support body extending in the one direction; and a handle part, which is arranged at a position lower than the surface of the base body, and an operator can hold the handle part when the base is placed on a plane.

[0010] A light emitting device according to a second aspect is the light emitting device according to the first aspect, wherein the handle portion is shaped to be hooked by a worker's finger.

[0011] A light emitting device according to a third aspect is the light emitting device according to the second aspect, wherein the handle portion includes a recessed portion formed in the base.

[0012] A light emitting device according to a fourth aspect is the light emitting device according to the third aspect, wherein the recessed portion is provided on a back side of the base body which is opposite to the light emitting portion.

[0013] A light emitting device according to a fifth aspect is the light emitting device according to the third aspect, wherein the recessed portion is provided on a side surface of the base.

[0014] A light emitting device according to a sixth aspect is the light emitting device according to the fourth aspect or the fifth aspect, wherein the recessed portions are provided on both sides of the base in a direction perpendicular to the one direction.

[0015] A light emitting device according to a seventh aspect is the light emitting device according to the sixth aspect, wherein the recessed portion has a shape into which a worker's fingers can be inserted from both sides of the base in a direction perpendicular to the one direction.

[0016] A light emitting device according to an eighth aspect is the light emitting device according to any one of the fourth aspect to the seventh aspect, wherein the recessed portion is provided on at least one side of the base in the one direction.

[0017] A light emitting device according to a ninth aspect is the light emitting device according to the eighth aspect, wherein the handle portion is provided at a position further outward than an outermost position of the plurality of light emitting portions in the one direction.

[0018] A light emitting device according to a tenth aspect is the light emitting device according to the eighth aspect or the ninth aspect, wherein the recessed portion has a shape into which fingers of an operator can be inserted from both sides of the base in the one direction.

[0019] The light emitting device of the eleventh aspect is the light emitting device according to any one of the third aspect to the tenth aspect, wherein the size of the recessed portion is at least 10 mm in height, 10 mm in width, and 10 mm in depth.

[0020] A light emitting device according to a twelfth aspect is the light emitting device according to any one of the third aspect to the eleventh aspect, wherein the recessed portion is a structure obtained by cutting a portion from an outer surface of the base.

[0021] A light emitting device according to a thirteenth aspect is the light emitting device according to the fourth aspect, wherein another member having a smaller area than the base is fixed to the back side of the base, thereby forming the handle portion at a position adjacent to the other member.

[0022] A light emitting device according to a fourteenth aspect is the light emitting device according to the thirteenth aspect, wherein the other members are provided on both end portions of the base along the one direction.

[0023] A light emitting device according to a fifteenth aspect is the light emitting device according to the fourteenth aspect, wherein a plurality of the other members are separately arranged on the base.

[0024] A light emitting device according to a sixteenth aspect is the light emitting device according to any one of the thirteenth to fifteenth aspects, wherein the other member is made of resin.

[0025] The light-emitting device of the seventeenth embodiment comprises: a base body, which is composed of a metal block extending in one direction; a plurality of light-emitting parts, which are arranged in a staggered manner along the one direction on the surface side of the base, and the plurality of light sources arranged in the one direction are supported on a support body extending in the one direction; a mounting part, which is mounted on the back side of the base and protrudes from the base to the side opposite to the light-emitting part and covers a part of the back side of the base; and a handle part, which is arranged on the back side of the base and can be held by an operator when the mounting part is placed on a plane.

[0026] In the light-emitting device of the eighteenth embodiment, in the light-emitting device described in the seventeenth embodiment, when viewed from the back side of the base, the area of ​​the portion of the mounting portion protruding from the base to the side opposite to the light-emitting portion is smaller than the area of ​​the base, and the handle portion is provided at a position adjacent to the protruding portion of the mounting portion on the back side of the base.

[0027] A light emitting device according to a nineteenth aspect is the light emitting device according to the eighteenth aspect, wherein the handle is provided at least at one end portion of the base in the one direction.

[0028] A light emitting device according to a twentieth aspect is the light emitting device according to the nineteenth aspect, wherein the handle portion is provided at an outer side than an outermost position of the plurality of light emitting portions in the one direction.

[0029] A light emitting device according to a twenty-first aspect is the light emitting device according to the eighteenth aspect, wherein the handle is provided at both ends of the base in the short-side direction.

[0030] A light emitting device according to a twenty-second aspect is the light emitting device according to any one of the seventeenth aspect to the twenty-first aspect, wherein the mounting portion includes a duct constituting a flow path for allowing air to flow along the one direction of the base.

[0031] A light emitting device according to a twenty-third aspect is the light emitting device according to any one of the seventeenth aspect to the twenty-second aspect, wherein the mounting portion includes a cover that covers the wire harnesses connected to the light emitting portions.

[0032] A light emitting device according to a twenty-fourth aspect is the light emitting device according to any one of the first aspect to the twenty-third aspect, wherein the support body is formed of a metal block.

[0033] A light emitting device according to a twenty-fifth aspect is a light emitting device according to any one of the first to twenty-fourth aspects, wherein the base is made of stainless steel or steel.

[0034] The drawing device of the twenty-sixth embodiment comprises: a light-emitting device as described in any one of the first to twenty-fifth embodiments; and an area where a photosensitive material is configured, which moves relative to the light-emitting device in a direction intersecting the one direction and is irradiated with light from the light-emitting device.

[0035] A drawing device according to a twenty-seventh aspect is the drawing device according to the twenty-sixth aspect, wherein the region is provided on a surface of a cylindrical member that rotates in a circumferential direction.

[0036] Effects of the Invention

[0037] According to the light emitting device of the first aspect, it is easier for an operator to hold the base body than in a case where the back surface of the base body is flat when the base body is placed on a flat surface.

[0038] According to the light emitting device of the second aspect, it is easier for the operator to hold the base body than in a case where the operator's fingers cannot be hooked on the grip portion.

[0039] According to the light emitting device of the third aspect, the handle portion can be easily manufactured compared to a case where the handle portion protrudes from the base body.

[0040] According to the light emitting device of the fourth aspect, the handle portion can be manufactured more easily than in the case where a protrusion protruding from the back surface of the base is provided.

[0041] According to the light emitting device of the fifth aspect, compared with the case where the protrusion protruding from the side surface of the base is provided, the area occupied by the base including the handle portion is reduced.

[0042] According to the light emitting device of the sixth aspect, the handle portion can be manufactured more easily than in the case where the protrusions are provided protruding from both sides in the short-side direction perpendicular to one direction of the base.

[0043] According to the light emitting device of the seventh aspect, the base body can be lifted up more easily than in a case where the operator inserts a finger into one side in the short side direction of the base body and lifts it up, and then inserts the finger into the other side.

[0044] According to the light emitting device of the eighth aspect, the handle portion can be manufactured more easily than in the case where a protrusion protruding from one side in one direction of the base is provided.

[0045] According to the light emitting device of the ninth aspect, compared with a configuration in which the light emitting units are provided at positions inner than the outermost positions in one direction of the plurality of light emitting units, the operator's hand is less likely to interfere with the light emitting units.

[0046] According to the light emitting device of the tenth aspect, the base body can be lifted up more easily than in a case where the operator inserts a finger into one side of the base body in one direction and lifts it up, and then inserts the finger into the other side.

[0047] According to the light emitting device of the eleventh aspect, it is easier for the operator to insert his finger into the recessed portion than when the size of the recessed portion is smaller than 10 mm in height, 10 mm in width, and 10 mm in depth.

[0048] According to the light emitting device of the twelfth aspect, the recessed portion can be easily produced compared to a structure including a protruding portion protruding from the outer surface of the base.

[0049] According to the light emitting device of the thirteenth aspect, the handle portion can be manufactured by a member other than the base body, instead of forming the handle portion on the base body itself.

[0050] According to the light emitting device of the fourteenth aspect, compared with a case where other components are provided at the center portion of the base in one direction, the base is more stable when placed on a flat surface.

[0051] According to the light emitting device of the fifteenth aspect, compared with a case where one large other component is provided on the base, the material of the other component can be reduced.

[0052] According to the light emitting device of the sixteenth aspect, the light emitting device can be made lighter in weight compared to a case where other members are made of metal.

[0053] According to the light emitting device of the seventeenth aspect, the operator can hold the base more easily than in a case where the mounting portion and the base have the same area when viewed from above with the mounting portion placed on a flat surface.

[0054] According to the light emitting device of the eighteenth aspect, the handle portion can be manufactured by a mounting portion different from the base body, instead of forming the handle portion on the base body itself.

[0055] According to the light emitting device of the nineteenth aspect, the handle portion can be manufactured more easily than in the case where a protrusion protruding in one direction of the base is provided.

[0056] According to the light emitting device of the twentieth aspect, compared with a configuration in which the light emitting units are provided at positions inner than the outermost positions in one direction of the plurality of light emitting units, the operator's hand is less likely to interfere with the light emitting units.

[0057] According to the light emitting device of the twenty-first aspect, the handle portion can be manufactured more easily than in the case where the protrusion portion protruding in the short-side direction of the base is provided.

[0058] According to the light emitting device of the twenty-second aspect, compared with the case where a dedicated mounting component is provided on the base, the handle portion can be manufactured using the duct.

[0059] According to the light emitting device of the twenty-third aspect, compared with the case where a dedicated mounting component is provided on the base body, the handle portion can be manufactured using the cover covering the wire harness.

[0060] According to the light emitting device of the twenty-fourth aspect, in a structure in which the support body of the light emitting unit is formed of a metal block and the light emitting unit is heavy, it is easy for an operator to hold the base.

[0061] According to the light emitting device of the twenty-fifth aspect, in a structure in which the base is made of stainless steel or steel and the light emitting portion is heavy, it is easy for an operator to hold the base.

[0062] According to the drawing device of the twenty-sixth aspect, compared with a case where the back surface of the base is flat when the base is placed on a flat surface, it is easier for the operator to hold the base of the light emitting device when operating the drawing device.

[0063] According to the drawing device of the twenty-seventh aspect, in the configuration including the cylindrical member, it is easy for an operator to hold the base of the light emitting device when operating the drawing device. BRIEF DESCRIPTION OF THE DRAWINGS

[0064] Figure 1 This is a schematic diagram showing an image forming apparatus including the exposure device according to the first embodiment.

[0065] Figure 2 It is a perspective view showing an exposure device used in the image forming apparatus.

[0066] Figure 3 This is a diagram showing the structure of the exposure device as viewed from the top and bottom.

[0067] Figure 4 This is a perspective view in which a part of the exposure device is enlarged.

[0068] Figure 5 It is a cross-sectional view showing a light emitting section of an exposure device.

[0069] Figure 6 It is a top view showing a handle portion provided on a base body of the exposure device.

[0070] Figure 7 This is a perspective view showing a handle portion provided on a base body of the exposure device.

[0071] Figure 8It is a plan view showing a handle portion provided on a base body of the exposure apparatus according to the second embodiment.

[0072] Fig. 9 It is a perspective view showing a handle portion provided on a base body of the exposure apparatus according to the second embodiment.

[0073] Fig.10 It is a plan view showing a handle portion provided on a base body of the exposure apparatus according to the third embodiment.

[0074] Fig.11 It is a perspective view showing a handle portion provided on a base body of the exposure apparatus according to the third embodiment.

[0075] Fig.12 It is a top view showing a handle portion provided on a base body of the exposure apparatus according to the fourth embodiment.

[0076] Fig.13 It is a perspective view showing a handle portion provided on a base body of the exposure apparatus according to the fourth embodiment.

[0077] Fig.14 It is a top view showing a handle portion provided on a base body of the exposure apparatus according to the fifth embodiment.

[0078] Fig.15 It is a perspective view showing a handle portion provided on a base body of the exposure apparatus according to the fifth embodiment.

[0079] Fig.16 It is a top view showing a handle portion provided on a base body of the exposure apparatus according to the sixth embodiment.

[0080] Fig.17 The present invention is a cross-sectional view showing a state in which a handle portion of a base body provided in the exposure apparatus according to the sixth embodiment is cut in the short-side direction.

[0081] Fig.18 It is a top view showing a handle portion provided on a base body of the exposure apparatus according to the seventh embodiment.

[0082] Fig.19 This is a cross-sectional view showing a state in which a handle portion of a base body provided in the exposure apparatus according to the seventh embodiment is cut along one direction (longitudinal direction).

[0083] Fig. 20 The sectional view shows a state where a base and a cover provided in the exposure apparatus of the eighth embodiment are cut in the short-side direction.

[0084] Fig.21 It is a side view showing a handle portion provided on a base body of the exposure apparatus according to the eighth embodiment.

[0085] Fig. 22The sectional view shows a state where a base and a cover provided in the exposure apparatus of the ninth embodiment are cut in the short-side direction.

[0086] Fig.23 It is a side view showing a base and a cover provided in the exposure apparatus according to the ninth embodiment.

[0087] Fig.24 It is a diagram showing the structure of a drawing device including a light emitting device according to a tenth embodiment. DETAILED DESCRIPTION

[0088] Hereinafter, a mode for carrying out the present invention (hereinafter referred to as the present embodiment) will be described.

[0089] [First embodiment]

[0090] <Image Forming Apparatus 10 >

[0091] Figure 1 1 is a schematic diagram showing the structure of an image forming apparatus 10 having an exposure device 40 according to a first embodiment. First, the structure of the image forming apparatus 10 is described. Next, the exposure device 40 used in the image forming apparatus 10 is described. Here, the image forming apparatus 10 is an example of a drawing apparatus, and the exposure device 40 is an example of a light emitting device. As an example, the image forming apparatus 10 is an image forming apparatus that forms images in multiple colors, such as a full-color printer for commercial printing that particularly requires high image quality.

[0092] The image forming apparatus 10 is a wide-format image forming apparatus corresponding to a width exceeding the width of the recording medium P when the longitudinal feed is B3 (i.e., a width exceeding 364 mm). As an example, the image forming apparatus 10 corresponds to a recording medium P having a size of 420 mm or more for the longitudinal feed of A2 and 1456 mm or less for the transverse feed of B0. For example, the image forming apparatus 10 corresponds to 728 mm as the transverse feed of B2.

[0093] Figure 1 The image forming device 10 shown is an example of an image forming device that forms an image on a recording medium. Specifically, the image forming device 10 is an electrophotographic image forming device that forms a toner image (an example of an image) on a recording medium P. Toner is an example of a powder. More specifically, the image forming device 10 includes an image forming unit 14 and a fixing device 16. The following describes each unit of the image forming device 10 (the image forming unit 14 and the fixing device 16).

[0094] <Image Forming Unit 14 >

[0095] The image forming section 14 has a function of forming a toner image on the recording medium P. Specifically, the image forming section 14 includes a toner image forming section 22 and a transfer device 17 .

[0096] <Toner Image Forming Section 22 >

[0097] Figure 1 The toner image forming units 22 shown are provided in plurality so as to form toner images for each color. In the present embodiment, the toner image forming units 22 for a total of four colors, namely yellow (Y), magenta (M), cyan (C), and black (K), are provided. Figure 1 The (Y), (M), (C), and (K) shown here represent components corresponding to the above-mentioned colors.

[0098] The toner image forming units 22 of the respective colors are similarly configured except for the toner used. Therefore, the toner image forming units 22 of the respective colors are represented by Figure 1 In the figure, the respective parts of the toner image forming section 22 (K) are denoted by reference numerals.

[0099] Specifically, the toner image forming section 22 of each color has a toner image forming section 22 extending in one direction (for example, Figure 1 The photosensitive drum 32 is a rotating drum that rotates in the counterclockwise direction (in the direction of rotation). Here, the photosensitive drum 32 is an example of a cylindrical member, and the photosensitive body on the surface of the photosensitive drum 32 is an example of a region where a photosensitive material is arranged. In addition, the toner image forming unit 22 of each color includes a charger 23, an exposure device 40, and a developing device 38.

[0100] In the toner image forming section 22 for each color, the charger 23 charges the photosensitive drum 32. Then, the exposure device 40 exposes the photosensitive drum 32 charged by the charger 23 to form an electrostatic latent image on the photosensitive drum 32. The developing device 38 develops the electrostatic latent image formed on the photosensitive drum 32 by the exposure device 40 to form a toner image.

[0101] The photosensitive drum 32 rotates while holding the electrostatic latent image formed as described above on its outer circumference, and transports the electrostatic latent image to the developing device 38. The specific structure of the exposure device 40 will be described later.

[0102] <Transfer device 17>

[0103] Figure 1 The transfer device 17 shown in the figure is a device for transferring the toner image formed by the toner image forming unit 22 to the recording medium P. Specifically, the transfer device 17 transfers the toner images of the photosensitive drums 32 of the respective colors to the transfer belt 24 as an intermediate transfer body in a superimposed manner, and transfers the superimposed toner images to the recording medium P in a secondary manner. Specifically, as shown in FIG. Figure 1 As shown, the transfer device 17 includes a transfer belt 24 , a primary transfer roller 26 , and a secondary transfer roller 28 .

[0104] The primary transfer roller 26 is a roller that transfers the toner image on the photosensitive drum 32 of each color to the transfer belt 24 at the primary transfer position T1 between the photosensitive drum 32 and the primary transfer roller 26. In the present embodiment, by applying a primary transfer electric field between the primary transfer roller 26 and the photosensitive drum 32, the toner image formed on the photosensitive drum 32 is transferred to the transfer belt 24 at the primary transfer position T1.

[0105] The transfer belt 24 transfers the toner image from the photosensitive drum 32 of each color to the outer peripheral surface. Specifically, the transfer belt 24 is constructed as follows. Figure 1 As shown, the transfer belt 24 is in an endless shape and is wound around a plurality of rollers 39 to determine its posture.

[0106] The transfer belt 24 is rotated in the direction of arrow A by, for example, a driving roller 39D among the plurality of rollers 39, which is driven by a driving unit (not shown). Figure 1 The roller 39B shown is an opposing roller 39B that opposes the secondary transfer roller 28 .

[0107] The secondary transfer roller 28 is a roller that transfers the toner image transferred onto the transfer belt 24 onto the recording medium P at a secondary transfer position T2 between the opposing roller 39B and the secondary transfer roller 28. In the present embodiment, by applying a secondary transfer electric field between the opposing roller 39B and the secondary transfer roller 28, the toner image transferred onto the transfer belt 24 is transferred onto the recording medium P at the secondary transfer position T2.

[0108] <Fixing device 16>

[0109] Figure 1 The fixing device 16 shown in the figure is a device for fixing the toner image transferred to the recording medium P by the secondary transfer roller 28 to the recording medium P. Specifically, as shown in FIG. Figure 1 As shown, the fixing device 16 includes a heating roller 16A as a heating member and a pressure roller 16B as a pressure member. In the fixing device 16, the heating roller 16A and the pressure roller 16B heat and press the recording medium P, thereby fixing the toner image formed on the recording medium P on the recording medium P.

[0110] <Exposure device 40>

[0111] Next, the structure of the exposure device 40 which is a main part of this embodiment is demonstrated. Figure 2 It is a perspective view showing the structure of the exposure device 40. Figure 31 is a top view showing the exposure device 40 as viewed from the top and bottom. In the following description, the arrow X direction shown in the figure is described as the width direction of the exposure device 40, and the arrow Y direction is described as the height direction of the exposure device 40. The arrow Z direction perpendicular to the device width direction and the device height direction is defined as the depth direction of the exposure device 40. The width direction and the height direction are determined for the convenience of description, and therefore the structure of the exposure device 40 is not limited to these directions.

[0112] (Overall Structure of Exposure Device 40)

[0113] First, the overall structure of the exposure device 40 will be described, and then each component of the exposure device 40 will be described.

[0114] like Figure 2 and Figure 3 As shown, the exposure device 40 includes: a base 42 extending in one direction (in the arrow Z direction in this embodiment); and a plurality of light emitting units 44, which are arranged on one side of the base 42 in the arrow Y direction (in the arrow Y direction). Figure 2 and Figure 3 In the exposure device 40 of the present embodiment, three light emitting units 44 are provided which extend in one direction of a substrate 42. The substrate 42 is Figure 3 The light emitting parts 44 are respectively configured to have the same structure and are arranged in a rectangular shape when viewed from above. Figure 3 The light emitting portion 44 is a long member having a rectangular shape in a plan view. The length of the light emitting portion 44 in one direction (ie, the longitudinal direction) is shorter than the length of the base 42 in one direction (ie, the longitudinal direction).

[0115] As an example, the three light emitting units 44 are staggered in one direction (arrow Z direction) of the base 42, and staggered in the width direction perpendicular to the one direction of the base 42, that is, the short side direction (arrow X direction) of the base 42. The exposure device 40 is arranged along the photosensitive drum 32 (refer to Figure 1 ) in the axial direction. The length of the exposure device 40 in one direction (arrow Z direction) is greater than the axial length of the photosensitive drum 32. Any one or more of the three light emitting portions 44 is opposite to the area on the surface of the photosensitive drum 32 where the photosensitive body is provided. Thus, the light emitted from the exposure device 40 is irradiated to the surface of the photosensitive drum 32.

[0116] exist Figure 2 and Figure 3 In the figure, the exposure device 40 is illustrated in such a manner that the side of the base 42 provided with the light emitting section 44 is the upper side in the vertical direction, and light is irradiated from the light emitting section 44 toward the upper side. Figure 1 In the image forming apparatus 10 shown in FIG. 1 , the exposure device 40 is vertically aligned with the exposure device 40. Figure 2 and Figure 3 The opposite is true. That is, Figure 1 In the embodiment, the exposure device 40 is arranged such that the side of the base 42 where the light emitting section 44 is provided is on the lower side in the vertical direction, and light is irradiated from the light emitting section 44 toward the photosensitive drum 32 on the lower side.

[0117] In the present embodiment, the three light emitting units 44 are arranged in a staggered manner when viewed from the upper side in the vertical direction of the exposure device 40 (see Figure 3 ). More specifically, two light emitting portions 44 are arranged on one side of the short side direction (arrow X direction) of the substrate 42 at both end sides in one direction (arrow Z direction) of the substrate 42. One light emitting portion 44 is arranged on the other side of the short side direction (arrow X direction) of the substrate 42 at the central portion in one direction (arrow Z direction) of the substrate 42. When viewed from the short side direction (arrow X direction) of the substrate 42, the ends of the two light emitting portions 44 arranged on one side of the short side direction (arrow X direction) of the substrate 42 overlap with the end of the one light emitting portion 44 arranged on the other side of the short side direction (arrow X direction) of the substrate 42. That is, in one direction (arrow Z direction) of the substrate 42, a portion of the irradiation range of the light from the three light emitting portions 44 overlaps.

[0118] When viewed from one direction of the base 42 (arrow Z direction), the two light emitting portions 44 arranged on one side of the short side direction of the base 42 (arrow X direction) do not overlap with the one light emitting portion 44 arranged on the other side of the short side direction of the base 42 (arrow X direction).

[0119] like Figure 2 as well as Figure 4 As shown, the exposure device 40 includes: a harness 46 electrically connected to each of the three light emitting units 44; a plurality of brackets 48 supporting the harness 46; and a lower cover 50 covering the harness 46 and the brackets 48 from the outside. The brackets 48 are mounted on the base 42 and extend from the base 42 to the other side in the direction of arrow Y (at the Figure 2 The lower cover 50 is attached to the other side of the base 42 in the direction of arrow Y (in the vertical direction). Figure 2 The middle is the lower side in the up-down direction).

[0120] like Figure 2 and Figure 3 As shown, the exposure device 40 includes a side cover 52 covering the sides of the three light emitting units 44. The side cover 52 is plate-shaped, and the lower end side is attached to both sides of the short side direction (arrow X direction) of the base 42. The exposure device 40 includes a cleaning device 54 for cleaning the lens unit 68 described later of the light emitting unit 44.

[0121] Furthermore, if Figure 4 and Figure 5As shown, the exposure device 40 includes: a plurality of spacers 56, which are sandwiched between the base 42 and the light emitting unit 44; and a fastening member 58, which fixes the light emitting unit 44 to the base 42 in a state of sandwiching the plurality of spacers 56. The fastening member 58 is, for example, a member having a spiral groove and fastened through the groove. In other words, it is a member having a threaded mechanism, such as a screw, a bolt, a screw, etc.

[0122] Although not shown in the figure, positioning shafts extending upward and downward are provided at both ends of the base 42 in one direction (arrow Z direction). The positioning shafts contact bearing members provided at both ends of the photosensitive drum 32 to position the exposure device 40 relative to the photosensitive drum 32 in the irradiation direction.

[0123] (Base 42)

[0124] like Figures 4 to 7 As shown in FIG. 1 , the base 42 is composed of a rectangular elongated member. The base 42 is arranged on the photosensitive drum 32 ( Figure 1 ) is located at a position opposite to the entire axial length. Figure 6 and Figure 7 In order to facilitate understanding of the structure of the base 42, the base 42 is schematically illustrated, and a recessed portion 80 and the like described later are omitted.

[0125] A recessed portion 80 (see FIG. 1 ) into which the spacer 56 enters is provided on the upper surface 42A of the base body 42 in the vertical direction (arrow Y direction). Figure 5 As an example, three spacers 56 are arranged at intervals in one direction (arrow Z direction) for one light emitting portion 44. In the present embodiment, three spacers 56 are arranged for each of the three light emitting portions 44.

[0126] The recessed portion 80 includes an inclined surface 80A which constitutes a bottom surface and is inclined relative to the surface 42A of the base 42; a vertical wall 80B which is arranged at an end portion of the inclined surface 80A in the downward direction; and two vertical walls (not shown) which are arranged opposite to both sides of the inclined surface 80A (see Figure 5 As an example, the inclined surface 80A with respect to the two light emitting portions 44 arranged on one side in the short-side direction of the base 42 and the inclined surface 80A with respect to the one light emitting portion 44 arranged on the other side in the short-side direction of the base 42 are inclined in the opposite directions. In the exposure device 40, the two light emitting portions 44 arranged on one side in the short-side direction of the base 42 and the one light emitting portion 44 arranged on the other side in the short-side direction of the base 42 are inclined in the opposite directions to each other toward the photosensitive drum 32 (refer to Figure 1 ) was adjusted in the way light is irradiated to the center of the image.

[0127] In the present embodiment, the base 42 is composed of a metal block. The metal block in the present embodiment refers to a metal block having a thickness that cannot be substantially bent in a shape used as the base of the exposure device 40, excluding a general metal plate formed into a shape by bending. As an example, the thickness of the metal block is 10% or more relative to the width of the base 42. Furthermore, the metal block may be composed of a metal block having a thickness of 20% or more and 100% or less relative to the width of the base 42.

[0128] Conventional wide-format image forming devices are used for black-and-white image output that does not require high image quality compared to full-color printers for commercial printing, and use metal plates as substrates. On the other hand, the image forming device 10 of the present embodiment is a full-color printer for commercial printing that requires high image quality. Therefore, in order to suppress the influence of the deflection of the substrate 42 on the image quality, a metal block with higher rigidity than the metal plate is used.

[0129] The base 42 is made of, for example, steel or stainless steel. Here, the base 42 may also be made of a metal block other than steel or stainless steel. For example, aluminum, which has a higher thermal conductivity than steel or stainless steel and is lightweight, may also be used. However, in this embodiment, the heat generated in the light source 64 is mainly dissipated through the support 60. Therefore, in the base 42, rigidity is prioritized over thermal conductivity and weight, and steel or stainless steel is used.

[0130] The thickness of the base 42 in the vertical direction (arrow Y direction) is preferably greater than the thickness of the support body 60 constituting the light emitting portion 44. Thus, the rigidity of the base 42 (bending rigidity in the arrow Y direction) is greater than the rigidity of the light emitting portion 44. The thickness of the base 42 in the vertical direction (arrow Y direction) is preferably 5 mm or more, more preferably 10 mm or more, and further preferably 20 mm or more.

[0131] like Figure 5 As shown, on the back surface 42B of the base 42 on the side opposite to the surface 42A, a concave portion 82 is formed which is cut toward the spacer 56 side, that is, the concave portion 80 side. The concave portions 82 are respectively arranged at positions corresponding to the concave portions 80 of the base 42. The concave portion 82 is formed along an inclined direction from the back surface 42B of the base 42 toward the central portion side of the short side direction (X direction) of the base 42. For example, when viewed from the back surface 42B of the base 42, the concave portion 82 is circular. The inner diameter of the concave portion 82 is larger than the outer shape of the head 58A of the fastening member 58. A through hole 84 is provided on the bottom surface 82A of the concave portion 82 for the shaft portion 58B of the fastening member 58 to pass through the base 42. The through hole 84 opens at the inclined surface 80A of the concave portion 80.

[0132] like Figure 4 as well as Figure 6-7As shown, handles 90A and 90B are formed at both ends of the base 42 in one direction (arrow Z direction) and are recessed from the back surface 42B. The shapes of the handles 90A and 90B are symmetrical in one direction (arrow Z direction) of the base 42. When it is not necessary to distinguish between the handles 90A and 90B, A and B are omitted and the handle 90 is recorded. The handle 90 is formed on the back surface 42B of the base 42 on the side opposite to the light emitting portion 44 (see Figure 4 ). That is, the handle portion 90 is provided at a position lower than the surface 42A of the base 42 in the up-down direction (arrow Y direction). As an example, the handle portion 90 is a shape in which the corner portion along the short side direction (X direction) of the back side 42B of the base 42 is cut off. In other words, the handle portion 90 is a recessed portion formed on both sides of one direction (arrow Z direction) of the back side 42B of the base 42. In the present embodiment, the shape of the handle portion 90 is a rectangle.

[0133] The operator can hold the handle 90 when the back side 42B of the base 42 is placed on a flat surface. More specifically, the handle 90 is in a shape that allows the operator's finger to be hooked when the back side 42B of the base 42 is placed on a flat surface, that is, in a shape that allows the operator's finger to be inserted between the flat surface on which the base 42 is placed and the handle 90. The handle 90 is in a shape that allows the operator's finger to be inserted from both sides in one direction (arrow Z direction) of the base 42. As an example, the handle 90 is provided at a position further outward than the outermost position of the three light emitting units 44 in one direction (arrow Z direction).

[0134] As an example, the handle portion 90 is a structure obtained by cutting the corner portion from the back side 42B of the base 42 by cutting. As an example, the depth of the handle portion 90 in the depth direction relative to the back side 42B of the base 42 is more than 10 mm, and the depth of the end face 43A in one direction of the base 42 is more than 10 mm. As an example, the handle portion 90 is provided on the end faces on both sides of the long side direction (arrow Z direction) of the base 42, and is a recessed portion with a size of at least 10 mm in height, 10 mm in width, and 10 mm in depth when viewed toward the end face. In addition, at least one of the height, width, and depth of the recessed portion is more preferably more than 15 mm, and more preferably more than 20 mm. As a result, it is easy for the operator to insert a finger into the handle portion 90, and the influence of the operator on individual differences is reduced.

[0135] (Light emitting unit 44)

[0136] like Figure 2 to Figure 5As shown, the three light emitting parts 44 have the same structure as described above. As an example, two light emitting parts 44 on one side of the short side direction (arrow X direction) of the base 42 and one light emitting part 44 on the other side of the short side direction (arrow X direction) of the base 42 are symmetrically arranged in the short side direction (arrow X direction) of the base 42.

[0137] like Figure 5 As shown, the light emitting portion 44 includes: a support body 60, which extends in one direction (arrow Z direction); and a light emitting element substrate 62, which is supported by a surface on the opposite side of the base 42 in the up-down direction (arrow Y direction) of the support body 60 (in the present embodiment, the upper surface in the up-down direction). A plurality of light sources 64 arranged in one direction are provided on the light emitting element substrate 62. In the present embodiment, the light source 64 is configured to include a plurality of light emitting elements, for example. As an example, the light source 64 is a light emitting element array having a semiconductor substrate and a plurality of light emitting elements formed in one direction on the semiconductor substrate. In the present embodiment, the light emitting element array as the light source 64 is arranged in a staggered manner in one direction on the light emitting element substrate 62. The light source 64 may not be a light emitting element array, but a single light emitting element. Each light emitting element is composed of a light emitting diode, a light emitting thyristor, a laser element, etc., and has a resolution of 2400dpi, for example, when arranged in one direction. The light emitting element substrate 62 is a substrate for making any one or more of the plurality of light sources 64 emit light. In Figure 5 In FIG. 1 , only one light source 64 provided in the light emitting unit 44 is shown, and illustration of other light sources is omitted.

[0138] The light emitting portion 44 includes a pair of mounting portions 66 provided on the surface of the light emitting element substrate 62 opposite to the support body 60 , and a lens portion 68 held in a state of being sandwiched between upper end portions of the pair of mounting portions 66 .

[0139] The pair of mounting portions 66 and the lens portion 68 extend along one direction (arrow Z direction) of the support body 60 (see Figure 4 The lens portion 68 is disposed at a position opposite to the plurality of light sources 64, and a space is formed between the lens portion 68 and the plurality of light sources 64. In the exposure device 40, light emitted from the plurality of light sources 64 passes through the lens portion 68 and is irradiated onto the photosensitive drum 32 (see Figure 1 ) surface.

[0140] The light emitting unit 44 includes a drive substrate 72 mounted on the support body 60 via a mounting member 70. In other words, a gap is formed between the support body 60 and the drive substrate 72 by the mounting member 70. The drive substrate 72 is a substrate for driving the light emitting unit 44, and an ASIC substrate (application specific integrated circuit, ASIC) or the like is used, for example.

[0141] The support body 60 is composed of a rectangular parallelepiped component. In the present embodiment, the support body 60 is composed of a metal block like the base body 42. For example, the support body 60 is composed of steel or stainless steel. Here, the base body 42 may also be composed of a metal block other than steel or stainless steel. For example, it may be a metal block of aluminum that has a higher thermal conductivity than steel or stainless steel and is lightweight. However, if the thermal expansion coefficients of the base body 42 and the support body 60 are different, deformation and deflection may occur. Therefore, from the viewpoint of suppressing deformation and deflection, it is preferred that the base body 42 and the support body 60 are composed of the same material.

[0142] The screw hole 74 to which the shaft portion 58B of the fastening member 58 is fastened is formed on the surface of the support body 60 on the base body 42 side. The screw hole 74 is provided at a position facing the through hole 84 of the base body 42.

[0143] The fastening member 58 is inserted into the concave portion 82 of the base 42, and the shaft portion 58B of the fastening member 58 passes through the through hole 84 of the base 42. The shaft portion 58B of the fastening member 58 is fastened to the screw hole 74 of the support 60 via the spacer 56. Thus, the light emitting portion 44 is fixed to the base 42 through the fastening member 58 from the inside of the concave portion 82 of the base 42. In the state where the light emitting portion 44 is fixed to the base 42 by the fastening member 58, the spacer 56 is interposed between the base 42 and the support 60.

[0144] Here, a method of fixing the support body 60 from the front side (emission surface side) relative to the front side of the base 42 using a fastening member 58 is considered. However, the support body 60 of this embodiment is different from the support body made of resin material and the support body made of metal plate, and is made of a heavy metal block. Therefore, it is necessary to have a fastening member 58 of a size that is commensurate with the mass. In this case, a space for the fastening member 58 of a large size is required on the surface side of the support body 60, and the size of the support body 60 becomes larger. Therefore, in this embodiment, a structure is used in which fastening is performed from the back side of the support body 60.

[0145] In the structure in which the fastening member 58 is provided not only on the two end sides but also on the central part side of the support body 60, it is difficult to adopt a structure in which fastening is performed from the front side of the support body 60 because the light source 64 is present on the central part side. Therefore, by adopting a structure in which fastening is performed from the back side of the base body 42, in the structure in which fastening is performed on the two end sides and the central part side of the support body 60, fastening is performed only from the back side of the base body 42.

[0146] The screw hole 74 and the concave portion 82 of the base 42 are provided at positions overlapping with the light source 64 when viewed from the optical axis direction of the light source 64. According to this structure, compared with the case where the screw hole 74 and the concave portion 82 of the base 42 are provided at positions not overlapping with the light source 64, the heat generated by the light source 64 is easily released to the base 42 side via the fastening member 58.

[0147] (Spacer 56)

[0148] like Figure 5 As shown in the figure, the spacer 56 is sandwiched between the base 42 and the light emitting portion 44 in the optical axis direction of the light source 64. As an example, the spacer 56 is plate-shaped and is composed of one component (i.e., a single component). In this embodiment, the spacer 56 is U-shaped when viewed from the optical axis direction of the light source 64. The spacer 56 includes a main body 56A and a recessed portion 56B cut from one side of the main body 56A.

[0149] The spacer 56 is disposed on the inclined surface 80A of the recess 80 of the base 42. The thickness of the spacer 56 at the position where the spacer 56 is disposed on the inclined surface 80A is greater than the depth of the recess 80. The fastening member 58 fixes the light emitting unit 44 to the base 42 so as to apply a compressive load to the spacer 56.

[0150] (Lower cover 50)

[0151] like Figure 2 As shown in FIG. 1 , the lower cover 50 covers the wiring harnesses 46 electrically connected to the three light emitting units 44 as described above. The lower cover 50 is an example of a cover. The lower cover 50 is attached to the lower side of the base 42 in the vertical direction (ie, Figure 5 The lower cover 50 is provided on the back side 42B side of the base 42 shown in the figure), protrudes from the base 42 to the side opposite to the light emitting portion 44, and covers a portion of the back side 42B of the base 42. In the present embodiment, the cross section of the lower cover 50 is U-shaped, and the upper end of the lower cover 50 is attached to both sides of the short side direction (arrow X direction) of the base 42 by a plurality of fastening members 86.

[0152] The length of the lower cover 50 in one direction (arrow Z direction) is shorter than the length of the base 42 in one direction (arrow Z direction). In other words, when viewed from the back surface 42B side of the base 42, the area of ​​the lower cover 50 is smaller than the area of ​​the base 42. The handles 90 on both sides of the base 42 in one direction are arranged at positions that are closer to the outside of the lower cover 50 in one direction. That is, the handles 90 are provided on the outside of the lower cover 50 on the back surface 42B side of the base 42. Thus, when the lower cover 50 is placed on a flat surface, the handles 90 and a portion of the back surface 42B of the base 42 are exposed to the outside of the lower cover 50 in one direction.

[0153] <Function and Effect>

[0154] Next, the operation and effects of this embodiment will be described.

[0155] The exposure device 40 is provided with: a base 42, which is composed of a metal block extending in one direction (arrow Z direction); and a light emitting unit 44, which supports a plurality of light sources 64 arranged in one direction on a support body 60 extending in one direction (refer to Figure 7 ).

[0156] In the exposure device 40, the base 42 is arranged over the entire axial length of the photosensitive drum 32. Three light emitting units 44 are arranged staggered in one direction of the base 42, and at least one of the three light emitting units 44 is opposed to the region where the photosensitive body is provided in the axial direction of the photosensitive drum 32. In the exposure device 40, light from the light emitting units 44 is irradiated to the photosensitive drum 32, thereby forming an electrostatic latent image in the region where the photosensitive body is provided on the photosensitive drum 32.

[0157] In the above-mentioned exposure device 40, three light emitting units 44 are provided on a base 42 formed of a metal block. Therefore, in the exposure device 40, the mass of the entire exposure device 40 becomes heavier than when three light emitting units are provided on a metal plate.

[0158] Therefore, it is required that the structure of the base 42 of the exposure device 40 be easily maintained by the operator during the operation of the exposure device 40. Here, examples of the operation include the manufacturing time, the maintenance time, and the like.

[0159] In the exposure device 40 of the present embodiment, handles 90 recessed from the back surface 42B of the base 42 are provided at both ends in one direction (arrow Z direction) of the base 42. The operator can hold the handles 90 in a state where the back surface 42B of the base 42 is placed on a flat surface. Therefore, in the exposure device 40, the operator can hold the base 42 more easily than in a case where the back surface of the base is flat in a state where the base is placed on a flat surface.

[0160] In the exposure device 40, the grip portion 90 is in a shape for the operator's fingers to touch. Therefore, in the exposure device 40, the operator can hold the base more easily than when the operator's fingers are not hooked on the grip portion.

[0161] In the exposure device 40, the handle portion 90 is a recessed portion formed in the base 42. Therefore, in the exposure device 40, the handle portion 90 is easier to manufacture than in the case where the handle portion protrudes from the base.

[0162] In the exposure device 40, the handle 90 is provided on the back surface 42B of the base 42 opposite to the light emitting unit 44. Therefore, in the exposure device 40, the handle 90 is easier to manufacture than when a protrusion is provided protruding from the back surface of the base.

[0163] In the exposure device 40, the handle 90 is provided on at least one side in one direction (arrow Z direction) of the base 42. Therefore, in the exposure device 40, the handle 90 is easier to manufacture than when a protrusion is provided protruding from one side in one direction of the base.

[0164] In the exposure device 40, the handle 90 is disposed at a position outside the outermost position in one direction (arrow Z direction) of the three light emitting units 44. Therefore, in the exposure device 40, compared with a configuration in which the handle 90 is disposed inside the outermost position in one direction of the plurality of light emitting units, the operator's hand is less likely to interfere with the light emitting unit 44.

[0165] In the exposure device 40, the handle portion 90 is shaped so that the operator's fingers can be inserted from both sides in one direction (arrow Z direction) of the base 42. Therefore, in the exposure device 40, it is easier to lift the base 42 than in a case where the operator's fingers are inserted from one side in one direction of the base 42 to lift it and then the fingers are inserted to the other side. For example, the base 42 can be easily lifted by one operator inserting his fingers into the handle portion 90 from both sides.

[0166] In the exposure device 40, as an example, the handle portion 90 is provided on the end surface on both sides of the long side direction (arrow Z direction) of the base 42, and the size when viewed toward the end surface is a recessed portion of at least 10 mm in height, 10 mm in width, and 10 mm in depth. Therefore, in the exposure device 40, it is easier for the operator to insert the finger into the handle portion 90 than when the height, width, and depth of the recessed portion are less than 10 mm.

[0167] In the exposure device 40, the handle portion 90 is a structure in which a part is cut out from the back surface 42B of the base 42. Therefore, in the exposure device 40, the handle portion is easier to manufacture than a structure having a protrusion protruding from the outer surface of the base.

[0168] In the exposure device 40, a lower cover 50 is provided which protrudes from the base 42 to the side opposite to the light emitting section 44 and covers a part of the back surface 42B of the base 42. The grip portion 90 provided on the back surface 42B of the base 42 allows the operator to hold the lower portion of the lower cover 50 in a state where the lower portion is placed on a flat surface. Therefore, in the exposure device 40, the operator can hold the base 42 more easily than in a case where the lower cover and the base have the same area when viewed from above in a state where the lower cover is placed on a flat surface.

[0169] In the exposure device 40, the lower cover 50 is a cover that covers the harnesses 46 connected to the light emitting units 44. Therefore, in the exposure device 40, the handle can be made by using the lower cover 50, compared with the case where a dedicated mounting member is provided on the base.

[0170] In the exposure device 40 , the support body 60 is formed of a metal block. Therefore, in the exposure device 40 , in a structure where the support body 60 of the light emitting unit 44 is formed of a metal block and the light emitting unit 44 is heavy, it is easy for an operator to hold the base body 42 .

[0171] In the exposure device 40, the base 42 is made of stainless steel or steel. The specific gravity of stainless steel and steel is about three times that of aluminum alloy. Therefore, in the exposure device 40, in a structure where the base 42 is made of stainless steel or steel and the light emitting unit 44 is heavy, it is easy for an operator to hold the base.

[0172] The image forming apparatus 10 is provided with an exposure device 40 and a photosensitive drum 32 that moves relative to the exposure device 40 in a direction intersecting one direction (Z direction) and is irradiated with light from the exposure device 40. An area where a photosensitive material is arranged is provided on the surface of the photosensitive drum 32. Therefore, in the image forming apparatus 10, it is easier for an operator to hold the base 42 of the exposure device 40 during operation, compared with a case where the back side of the base is flat when the base is placed on a flat surface, or a case where the mounting portion and the base are equal in area when viewed from above when the mounting portion is placed on a flat surface.

[0173] In the image forming apparatus 10, the area where the photosensitive member is arranged is provided on the surface of the photosensitive drum 32 which is a cylindrical member rotating in the circumferential direction. Therefore, in the image forming apparatus 10, in the structure including the photosensitive drum 32, the operator can easily hold the base 42 of the exposure device 40 during operation.

[0174] [Second embodiment]

[0175] Next, the exposure device of the second embodiment is described. The basic structure of the exposure device of the second embodiment is the same as the exposure device 40 of the first embodiment. In the second embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0176] Figure 8 and Fig. 9 1 shows a substrate 100 used in an exposure device of the second embodiment. In the exposure device of the second embodiment, only the substrate 100 is changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Figure 8 and Fig. 9 As shown in FIG. 1 , the base 100 is composed of a rectangular parallelepiped metal block. One end 100A of the base 100 in one direction (arrow Z direction) includes handles 102A and 102B formed on both sides of a short side direction (arrow X direction) perpendicular to the one direction of the base 100. The other end 100B of the base 100 in one direction (arrow Z direction) includes handles 102C and 102D formed on both sides of the short side direction (arrow X direction) of the base 100 (see FIG. 1 ). Figure 8 ). When there is no need to distinguish between the handle portions 102A, 102B, 102C, and 102D, they are sometimes described as the handle portion 102.

[0177] The handles 102A and 102B are recessed portions that are recessed from the back surface (the surface opposite to the surface 42A) of the base 100 (see Fig. 9 ). The handles 102A and 102B are shaped by cutting off the corners of the end face 101A in one direction (arrow Z direction) of the base 100 and the end face 101B in the short side direction (arrow X direction) of the base 100 on the back side of the base 100 (the side opposite to the surface 42A). In the present embodiment, the handles 102A and 102B are rectangular in shape. The operator can hold the handles 102A and 102B when the back side of the base 100 is placed on a flat surface. The handles 102A and 102B are shaped for the operator's fingers to hook, that is, they are shaped so that the operator's fingers can be inserted between the flat surface and the handles 102A and 102B. As an example, the handle 102 is provided on the end faces on both sides of the short side direction (arrow X direction) of the base 100, and is a recessed portion having a size of at least 10 mm in height, 10 mm in width, and 10 mm in depth when viewed toward the end face.

[0178] The handle portions 102C and 102D are symmetrical with respect to the handle portions 102A and 102B in one direction (arrow Z direction) of the base 100 .

[0179] The exposure apparatus of the second embodiment has the following operations and effects in addition to the operations and effects based on the same structure as the exposure apparatus 40 of the first embodiment.

[0180] In the exposure apparatus of the second embodiment, the handle portion 102 (ie, the handle portions 102A, 102B, 102C, and 102D) can be easily manufactured compared to a case where protrusions are provided protruding from both sides of the substrate in the short-side direction.

[0181] In the exposure apparatus of the second embodiment, it is easier to lift the base body 100 than in a case where the operator inserts a finger from one side in the short side direction of the base body 100 to lift it and then inserts a finger to the other side. For example, the base body 100 can be easily lifted by one of the two operators inserting a finger into the handles 102A and 102B and the other of the two operators inserting a finger into the handles 102C and 102D.

[0182] [Third Embodiment]

[0183] Next, the exposure device of the third embodiment is described. The basic structure of the exposure device of the third embodiment is the same as the exposure device 40 of the first embodiment. In the third embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0184] Fig.10 and Fig.11 1 shows a substrate 110 used in the exposure device of the third embodiment. In the exposure device of the third embodiment, only the substrate 110 is changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig.10 and Fig.11 As shown, the base 110 is composed of a rectangular parallelepiped metal block. The base 110 has handles 112A and 112B recessed from the back side (the side opposite to the surface 42A) at both ends of the base 110 in the short side direction (arrow X direction). The shapes of the handles 112A and 112B are symmetrical in the short side direction (arrow X direction) of the base 42. When it is not necessary to distinguish between the handles 112A and 112B, they are sometimes described as the handle 112.

[0185] As an example, the handle 112 is a shape formed by cutting off the corner of the back side along one direction (arrow Z direction) of the end surface 111B in the short side direction (arrow X direction) of the base 110. That is, the handle 112 is a recessed portion formed on both sides of the short side direction (arrow X direction) of the base 110. In the present embodiment, the shape of the handle 112 is a rectangle.

[0186] The operator can hold the handle 112 when the back side of the base 110 is placed on a flat surface. More specifically, the handle 112 is shaped to be hooked by the operator's fingers, that is, the operator's fingers can be inserted between the flat surface and the handle 112. The handle 112 is shaped to be able to insert the operator's fingers from both sides of the short side direction (arrow X direction) of the base 110. As an example, the handle 112 is provided on the end surfaces on both sides of the short side direction (arrow X direction) of the base 110, and is a recessed portion with a size of at least 10 mm in height, 10 mm in width, and 10 mm in depth when viewed toward the end surface.

[0187] The exposure apparatus of the third embodiment has the following operations and effects in addition to the operations and effects based on the same structure as the exposure apparatus 40 of the first embodiment.

[0188] In the exposure apparatus of the third embodiment, the handle portion 112 (ie, the handle portions 112A and 112B) can be easily manufactured compared to a case where protrusions protruding from both sides in the short-side direction of the base are provided.

[0189] In the exposure apparatus of the third embodiment, it is easier to lift the base 110 than in the case where the operator inserts the finger from one side in the short side direction of the base 110 to lift it and then inserts the finger from the other side. For example, one of the two operators inserts the finger into the handle 112A and the other operator inserts the finger into the handle 112B, thereby easily lifting the base 110. In addition, since the handle is larger than in the second embodiment, the operator has a higher degree of freedom in the position to insert the finger.

[0190] [Fourth Embodiment]

[0191] Next, the exposure device of the fourth embodiment is described. The basic structure of the exposure device of the fourth embodiment is the same as the exposure device 40 of the first embodiment. In the fourth embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0192] Fig.12 and Fig.13 1 shows a base body 120 used in an exposure device of the fourth embodiment. In the exposure device of the fourth embodiment, only the base body 120 is changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig.12 and Fig.13 As shown, the base 120 is made of a rectangular parallelepiped metal block. The base 120 has a handle portion 122 formed at the edge of four sides of the base 120, which is recessed from the back side (the side opposite to the surface 42A).

[0193] As an example, the handle 122 is a shape formed by cutting off a corner portion of the back side along the short side direction (arrow X direction) on the end face 121A of the base 120. Also, the handle 122 is a shape formed by cutting off a corner portion of the back side along one direction (arrow Z direction) on the end face 121B of the short side direction (arrow X direction) of the base 120. The handle 122 is a recessed portion formed continuously with the four end faces 121A and 121B of the base 120. In the present embodiment, the shape of the handle 122 is a rectangle.

[0194] The operator can hold the handle 122 when the back side of the base 120 is placed on a flat surface. More specifically, the handle 122 is shaped to be hooked by the operator's fingers, that is, the operator's fingers can be inserted between the flat surface and the handle 122. The handle 122 is shaped to be able to insert the operator's fingers from both sides of the short side direction (arrow X direction) of the base 110. As an example, the handle 122 is provided on the end faces on both sides of the long side direction (arrow X direction) and the end faces on both sides of the short side direction (arrow X direction) of the base 110, and is a recessed portion with a size of at least 10 mm in height, 10 mm in width, and 10 mm in depth when viewed toward these end faces.

[0195] The exposure apparatus of the fourth embodiment has the following operations and effects in addition to the operations and effects based on the same configuration as the exposure apparatus of the first to third embodiments.

[0196] In the exposure apparatus of the fourth embodiment, the handle portion 122 is easier to manufacture than in the case where protrusions are provided that protrude from one direction or both sides of the short-side direction of the base.

[0197] In the exposure apparatus of the fourth embodiment, it is easier to lift the base 120 than in the case where the operator inserts a finger from one side in one direction or the short side direction of the base 120 to lift it and then inserts a finger from the other side. For example, one of the two operators inserts a finger into the grip 122, and the other of the two operators inserts a finger into the grip 122, thereby easily lifting the base 120. In addition, since the grip is larger than in the third embodiment, the operator has a higher degree of freedom in the position where the finger is inserted.

[0198] [Fifth Embodiment]

[0199] Next, the exposure device of the fifth embodiment is described. The basic structure of the exposure device of the fifth embodiment is the same as that of the exposure device 40 of the first embodiment. In the fifth embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0200] Fig.14 and Fig.15 1 shows a base body 130 used in the exposure device of the fifth embodiment. In the exposure device of the fifth embodiment, only the base body 130 is changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig.14 and Fig.15 As shown, the base 130 is composed of a rectangular parallelepiped metal block. One end 130A of the base 130 in one direction (arrow Z direction) includes handles 132A and 132B formed on the end faces 131B on both sides of the short side direction (arrow X direction) of the base 130. The other end 130B of the base 130 in one direction (arrow Z direction) includes handles 132C and 132D formed on the end faces 131B on both sides of the short side direction (arrow X direction) of the base 130 (see FIG. Figure 8 Here, the end surface 131B is an example of a side surface. When there is no need to distinguish between the handle portions 132A, 132B, 132C, and 132D, they may be described as the handle portion 132.

[0201] The handles 132A, 132B, 132C, and 132D are of the same shape and are recessed from the end face 131B of the base 130. The handle 132 is provided at a position lower than the surface 42A of the base 130 in the up-down direction (arrow Y direction). In the present embodiment, the shape of the handle 132 is rectangular. The operator can hold the handle 132 when the back side of the base 130 is placed on a flat surface. The handle 132 is in a shape for the operator's fingers to hook, that is, in a shape in which the operator's fingers can be inserted between the flat surface and the handle 132. As an example, the handle 132 is provided on the end faces on both sides of the short side direction (arrow X direction) of the base 130, and is a recessed portion having a size of at least 10 mm in height, 10 mm in width, and 10 mm in depth when viewed toward these end faces.

[0202] The exposure apparatus of the fifth embodiment has the following operations and effects in addition to the operations and effects based on the same configuration as the exposure apparatuses of the first to fourth embodiments.

[0203] In the exposure apparatus of the fifth embodiment, the base 130 having the handle 132 occupies a smaller area than when a protrusion protruding from the side of the base is provided. In addition, the contact area of ​​the back surface of the base 130 is larger than that of the first to fourth embodiments, so the stability is high.

[0204] [Sixth Embodiment]

[0205] Next, the exposure device of the sixth embodiment is described. The basic structure of the exposure device of the sixth embodiment is the same as the exposure device 40 of the first embodiment. In the sixth embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0206] Fig.16 and Fig.17 140 and other components 142 used in the exposure device of the sixth embodiment are shown. In the exposure device of the sixth embodiment, only the base 140 and other components 142 are changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig.16 and Fig.17 As shown in FIG. 1 , the base 140 is composed of a rectangular parallelepiped metal block. In the back side 42B of the base 140, except for the peripheral portion, a part 142 having an area smaller than that of the base 140 when viewed from above is fixed. The other part 142 is a plate-like body that is rectangular in shape when viewed from above. Thus, a handle 144 is formed at a position adjacent to the other part 142 on the back side 42B of the base 140.

[0207] In this embodiment, the other components 142 are made of metal and are fixed to the base 140 by welding, bonding, screwing, embedding, etc. The handle 144 is continuously provided along the four end surfaces 141A and 141B of the base 140. In this embodiment, the cross section of the handle 144 is rectangular.

[0208] The operator can hold the handle 144 when the base 140 (i.e., the other component 142 side) is placed on a flat surface. More specifically, the handle 144 is a shape for the operator's fingers to hook, that is, a shape in which the fingers can be inserted from between the flat surface and the handle 144. The handle 144 is a shape in which the operator's fingers can be inserted from both sides of the short side direction (arrow X direction) of the base 140. As an example, the handle 144 is a recessed portion having the same size as in other embodiments.

[0209] The exposure apparatus of the sixth embodiment has the following operations and effects in addition to the operations and effects based on the same structure as the exposure apparatus of the first to fourth embodiments.

[0210] In the exposure apparatus of the sixth embodiment, the handle portion is not formed on the base body itself, but the handle portion 144 can be manufactured by another member 142 different from the base body 140 .

[0211] [Seventh Embodiment]

[0212] Next, the exposure device of the seventh embodiment is described. The basic structure of the exposure device of the seventh embodiment is the same as the exposure device 40 of the first embodiment. In the seventh embodiment, when the same components, parts, etc. as the first embodiment are used, the same reference numerals are marked, and detailed description is omitted, and the description is centered on the differences.

[0213] Fig.18 and Fig.19 1 and 2 show a substrate 150 and a plurality of other components 152 used in the exposure device of the seventh embodiment. In the exposure device of the seventh embodiment, only the substrate 150 and a plurality of other components 152 are changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig.18 and Fig.19 As shown, the base 150 is composed of a rectangular parallelepiped metal block. On the back side 42B of the base 150, a plurality of (two in this embodiment) other components 152 whose areas are smaller than the area of ​​the base 150 when viewed from above are fixed at both ends in one direction (arrow Z direction). That is, two other components 152 are separately arranged on the base 150. The other component 152 is a plate-like body that is square when viewed from above. As a result, a handle portion 154 is formed at a position adjacent to the two other components 152 in the back side 42B of the base 150. The handle portion 154 is arranged on the two end sides of the base 150 in one direction (arrow Z direction).

[0214] More specifically, at one end 150A of the base 150 in one direction (arrow Z direction), at a position adjacent to the other component 152, a handle portion 154 is continuously provided along an end surface 151A in one direction of the base 150 and end surfaces 151B on both sides in the short side direction (arrow X direction) of the base 150. At the other end 150B of the base 150 in one direction (arrow Z direction), at a position adjacent to the other component 152, a handle portion 154 is continuously provided along an end surface 151A in one direction of the base 150 and end surfaces 151B on both sides in the short side direction (arrow X direction) of the base 150.

[0215] In the present embodiment, the other member 152 is made of metal and is fixed to the base 150 by welding, bonding, screwing, embedding, etc. In the present embodiment, the cross section of the handle portion 154 is rectangular.

[0216] The operator can hold the handle 154 while placing the other components 152 side of the base 150 on a flat surface. More specifically, the handle 154 is shaped so that the operator's fingers can be hooked, that is, the operator's fingers can be inserted between the flat surface and the handle 154. The handle 154 is shaped so that the operator's fingers can be inserted from both sides of the short side direction (arrow X direction) of the base 150. As an example, the handle 154 is a recessed portion having the same size as in other embodiments.

[0217] The exposure apparatus of the seventh embodiment has the following operations and effects in addition to the operations and effects based on the same structure as the exposure apparatus of the sixth embodiment.

[0218] In the exposure apparatus of the seventh embodiment, other components 152 are provided at both end portions along one direction of the base 150. Therefore, compared with the case where other components are provided at the center portion in one direction of the base, the other components 152 side of the base 150 is stabilized when placed on a flat surface.

[0219] In the exposure apparatus of the seventh embodiment, a plurality of other components 152 are separately arranged on the base 150. Therefore, the material of the other components 152 can be reduced compared to the case where one large other component is provided on the base.

[0220] In the exposure apparatus of the sixth and seventh embodiments, other components 142 and 152 may be made of resin instead of metal. Other components made of resin can be fixed to the base by, for example, bonding, screwing, embedding, etc. Thus, the exposure apparatus can be made lighter than when other components are made of metal.

[0221] [Eighth Embodiment]

[0222] Next, the exposure device of the eighth embodiment is described. The basic structure of the exposure device of the eighth embodiment is the same as the exposure device 40 of the first embodiment. In the eighth embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0223] Fig. 20 and Fig.21 1 shows a base body 160 and a lower cover 162 used in an exposure device of the eighth embodiment. In the exposure device of the eighth embodiment, only the base body 160 and the lower cover 162 are changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig. 20 and Fig.21As shown, the base 160 is composed of a rectangular parallelepiped metal block, and the back side 42B of the base 160 is flat. A lower cover 162 is installed on the base 160, which protrudes to the lower side in the up-down direction (arrow Y direction) of the base 160 and covers a part of the back side 42B of the base 160. The lower cover 162 is an example of a mounting portion. The lower cover 162 is in a U-shape opened to the side of the base 160 in a cross-sectional view cut along the short side direction. The upper edge 162A of the lower cover 162 is installed on the end surface (i.e., side surface) 161B on both sides of the short side direction (arrow X direction) of the base 160 through a plurality of fastening components 164. In the present embodiment, the lower cover 162 has a function as a cover that covers the wiring harness (omitted from the illustration) respectively connected to a plurality of light-emitting units (omitted from the illustration).

[0224] The length of the lower cover 162 in one direction (arrow Z direction) is shorter than the length of the base 160 in one direction (arrow Z direction). That is, when viewed from the back side 42B of the base 160, the area of ​​the lower cover 162 is smaller than the area of ​​the base 160. In the present embodiment, the area of ​​the lower cover 162 is equal to the area of ​​the portion of the lower cover 162 protruding from the base 160. Thus, at one end 160A and the other end 160B in one direction (arrow Z direction) of the base 160, a handle portion 166 is provided at a position adjacent to the lower cover 162 on the back side 42B of the base 160. As an example, the handle portion 166 is a recessed portion having the same size as in other embodiments.

[0225] The exposure apparatus of the eighth embodiment has the following operations and effects in addition to the operations and effects based on the same structure as the exposure apparatus of the first to seventh embodiments.

[0226] In the exposure apparatus of the eighth embodiment, the operator can hold the base 160 more easily than in a case where the mounting portion and the base have the same area when viewed from above in a state where the mounting portion is placed on a flat surface.

[0227] In the exposure apparatus of the eighth embodiment, the handle portion 166 can be manufactured by the lower cover 162 which is different from the base 160 , instead of forming the handle portion on the base itself.

[0228] In the exposure apparatus of the eighth embodiment, the handle portion 166 is provided at both ends in one direction of the base 160. Therefore, the handle portion 166 is easier to manufacture than when a protrusion protruding in one direction of the base is provided.

[0229] In the exposure device of the eighth embodiment, the lower cover 162 includes a cover that covers the wire harnesses (not shown) connected to the plurality of light emitting units (not shown). Therefore, compared with the case where a dedicated mounting component is provided on the base, the handle 166 can be made by using the lower cover 162 that covers the wire harnesses.

[0230] [Ninth Embodiment]

[0231] Next, the exposure device of the ninth embodiment is described. The basic structure of the exposure device of the ninth embodiment is the same as the exposure device 40 of the first embodiment. In the ninth embodiment, when the components, parts, etc. are the same as those of the first embodiment, the same reference numerals are marked, and the detailed description is omitted, and the description is centered on the differences.

[0232] Fig. 22 and Fig.23 170 and the lower cover 172 used in the exposure device of the ninth embodiment are shown. In the exposure device of the ninth embodiment, only the base 170 and the lower cover 172 are changed, and the other structures are the same as those of the exposure device 40 of the first embodiment. Fig. 22 and Fig.23 As shown, the base 170 is composed of a rectangular parallelepiped metal block, and the back surface 42B of the base 170 is flat. A lower cover 172 is installed on the back surface 42B side of the base 170, which protrudes to the lower side in the vertical direction (arrow Y direction) of the base 170 and covers a part of the back surface 42B of the base 170. The lower cover 172 is an example of a mounting portion.

[0233] The length of the lower cover 172 in one direction (the direction of the arrow Z) is equal to the length of the base 170 in one direction (the direction of the arrow Z). The lower cover 172 is in a hat shape in a cross-sectional view cut along the short side direction. More specifically, the lower cover 172 includes: a U-shaped protrusion 172A that protrudes downward from the base 170 and opens to the side of the base 170; and a flange portion 172B that bends from the upper end of the protrusion 172A to both sides. When viewed from the back side 42B of the base 170, the area of ​​the protrusion 172A of the lower cover 172 is smaller than the area of ​​the base 170. The flange portion 172B of the lower cover 172 is in contact with the back side 42B of the base 170, and in this state, the flange portion 172B is attached to the back side 42B of the base 170 by a plurality of fastening components 164. In the present embodiment, the lower cover 172 has a function as a cover that covers wire harnesses (not shown) respectively connected to a plurality of light emitting units (not shown).

[0234] In this embodiment, the area of ​​the protrusion 172A of the lower cover 172 is smaller than the area of ​​the base 170, and a handle portion 176 is provided at a position adjacent to the protrusion 172A on the back side 42B of the base 170. That is, the flange portion 172B of the lower cover 172 is in contact with the back side 42B of the base 170 on both sides in the short side direction (arrow X direction) of the base 170, and the lower side of the flange portion 172B is the handle portion 176. As an example, the handle portion 176 is a recessed portion having the same size as in other embodiments.

[0235] The exposure apparatus of the ninth embodiment has the following operations and effects in addition to the operations and effects based on the same structure as the exposure apparatus of the eighth embodiment.

[0236] In the exposure apparatus of the ninth embodiment, when viewed from the back surface 42B side of the base 170, the protrusion 172A on the lower cover 172 is smaller than the area of ​​the base 170, and the handle portion 176 is provided at a position adjacent to the protrusion 172A on the back surface 42B side of the base 170. Therefore, the handle portion 176 can be manufactured by the lower cover 172 which is different from the base 170 without forming the handle portion on the base itself.

[0237] In the exposure apparatus of the ninth embodiment, the handle portion 176 is easier to manufacture than in the case where a protrusion that protrudes in the short-side direction of the base is provided.

[0238] In the exposure device of the eighth and ninth embodiments, the lower cover 162, 172 may also be a duct constituting a flow path for air to flow in one direction of the substrate. For example, a fan for supplying air may be provided on one side of the duct in one direction, and an opening for blowing air from the duct to the light-emitting portion side in the up-down direction may be formed on the substrate. In such a structure, the duct can be used to make a handle, compared with a case where a dedicated mounting component is provided on the substrate. The lower cover 162, 172 may also be used as a duct constituting a flow path for air to flow in one direction of the substrate and a cover for protecting the wiring harness. If the eighth embodiment and the ninth embodiment are compared, the eighth embodiment in which the width of the lower cover is wide becomes a structure that is difficult to tip over. Therefore, especially in a structure in which the substrate is a metal block and is heavy, the eighth embodiment is preferably adopted from the viewpoint of suppressing tipping over. Similarly, if the first and second embodiments are compared with the third and fourth embodiments, the first and second embodiments are preferably adopted from the viewpoint of suppressing tipping over.

[0239] [Tenth embodiment]

[0240] Fig.24 A drawing device 200 including a light emitting device 202 according to a tenth embodiment is shown. The same components as those in the first embodiment are denoted by the same reference numerals and their description is omitted.

[0241] like Fig.24 As shown, the drawing device 200 includes a light emitting device 202 and a cylindrical member 204 which is arranged along the longitudinal direction of the light emitting device 202 and rotates in the circumferential direction.

[0242] The light emitting device 202 has the same structure as the exposure device 40 of the first embodiment.

[0243] The cylindrical member 204 includes a cylindrical portion 204A and shaft portions 204B extending to both sides of the cylindrical portion 204A. The shaft portion 204B is rotatably supported by a frame (not shown), and the cylindrical portion 204A rotates in the circumferential direction by the rotation of the shaft portion 204B.

[0244] A substrate 206 is mounted on the surface of the cylindrical portion 204A. An area 206A where a photosensitive material is arranged is provided on the surface of the substrate 206. As an example, the substrate 206 is a plate for computer-to-plate (CTP) used in a platemaking process of offset printing. As an example, the area 206A where a photosensitive material is arranged is an area where a photosensitive material such as a photoresist is applied.

[0245] In the drawing device 200, while rotating the cylindrical member 204, the light emitting device 202 irradiates the region 206A of the substrate 206 where the photosensitive material is arranged with light of a predetermined pattern. As a result, the region 206A of the substrate 206 where the photosensitive material is arranged is drawn in a predetermined pattern. Then, by developing the substrate 206, a printing plate used in an offset printing device is produced. As a light source of the drawing device 200 in this case, a laser element can be used, for example.

[0246] The above-described light emitting device 202 has the following functions and effects in addition to the functions and effects based on the same structure as the exposure device 40 of the first embodiment.

[0247] In the drawing device 200 including the light emitting device 202 described above, it is easier for an operator to hold the base 42 of the light emitting device 202 when operating the drawing device 200 than when the base is placed on a flat surface with the back surface of the base being flat.

[0248] According to the drawing device 200 , in the configuration including the cylindrical member 204 , it is easy for an operator to hold the base 42 of the light emitting device 202 when operating the drawing device 200 .

[0249] In the drawing apparatus 200, the light emitting device 202 may be changed to the same structure as the exposure device 40 of the first embodiment instead of the same structure as the exposure device of the second to ninth embodiments.

[0250] (Supplementary explanation)

[0251] In the exposure devices of the first to ninth embodiments and the light emitting device of the tenth embodiment, three light emitting units are arranged on the substrate, but the present invention is not limited to this structure. For example, one light emitting unit may be arranged on the substrate, two light emitting units may be arranged on the substrate, or four or more light emitting units may be arranged on the substrate. The positions of the multiple light emitting units arranged on the substrate may also be appropriately set.

[0252] In the exposure devices of the first to ninth embodiments and the light emitting device of the tenth embodiment, the shape of the base can be changed. The components of the light emitting unit or the shapes of the components of the light emitting unit can be changed. The support body 60 of the light emitting unit is composed of a metal block, but the present invention is not limited to this. For example, the support body can be composed of a resin, or can also be composed of other metal materials such as a metal plate.

[0253] In the exposure devices of the first to ninth embodiments and the light emitting device of the tenth embodiment, the shape, position and number of the handles can be changed. For example, the handle may be provided only on one side in one direction or in the short side direction of the substrate. The handle may be provided on one side in one direction or in the short side direction of the substrate, and a gripping portion protruding upward or laterally toward the substrate may be provided on the other side in one direction or in the short side direction of the substrate. In order to increase the bending rigidity of the substrate, the handle may be formed by ribs provided on the substrate. In the sixth and seventh embodiments, other plate-shaped components are fixed to the substrate, but the other components are not limited to plate-shaped, and for example, other components formed by bending metal plates may be used.

[0254] In the drawing device 200 of the tenth embodiment, light is irradiated from the light emitting device 202 to the substrate 206 attached to the cylindrical portion 204A of the cylindrical member 204, but the present invention is not limited to this structure. For example, the substrate may be arranged on a flat table, and the light emitting device and the table may be relatively moved in a direction intersecting with one direction of the light emitting device, so that light is irradiated from the light emitting device to the substrate.

[0255] In the drawing device 200 of the tenth embodiment, the substrate 206 is a CTP plate used in the platemaking process of offset printing, and light is irradiated from the light emitting device 202 to the area 206A of the substrate 206 where the photosensitive material is arranged, but the present invention is not limited to this structure. For example, the above-mentioned light emitting device and drawing device can be used for exposure when manufacturing a printed wiring board (PWB). For example, it is also possible to directly draw a substrate coated with a photosensitive material such as a photoresist without using a photomask, thereby manufacturing a printed wiring board. The substrate used can be a rigid substrate or a flexible substrate. In the case of a flexible substrate, it is also possible to fix it on Fig.24 The cylindrical member 204 is in a state of being drawn while being rotated.

[0256] Furthermore, the above-mentioned light emitting device and drawing device can be used for the following applications of components that use photolithography, such as the formation of color filters in the manufacturing process of liquid crystal display devices (LCD), the exposure of dry film resists (DFR) in the manufacturing process of thin film transistors (TFT), the exposure of dry film resists (DFR) in the manufacturing process of plasma display panels (PDP), the exposure of photosensitive materials such as photoresists in the manufacturing process of semiconductor elements, the exposure of photosensitive materials such as photoresists in the platemaking process of printing other than offset printing such as gravure printing, or the exposure of photosensitive materials in the manufacturing process of watch parts. Here, photolithography refers to a technique for generating a pattern consisting of exposed parts and unexposed parts by exposing the surface of a substance on which a photosensitive material is disposed in a pattern.

[0257] The above-mentioned light emitting device and drawing device can use either a photon mode photosensitive material that directly records information by exposure or a thermal mode photosensitive material that records information by heat generated by exposure. As a light source of the drawing device 200, an LED element or a laser element can be used according to the exposure object.

[0258] Although the present invention has been described in detail with reference to a specific embodiment, the present invention is not limited to the embodiment, and it is obvious to those skilled in the art that various other embodiments can be implemented within the scope of the present invention.

[0259] This application claims priority based on Japanese Patent Application No. 2020-054928 filed on March 25, 2020.

Claims

1. A light emitting device, comprising: a substrate composed of a metal block extending in one direction; A plurality of light-emitting parts are arranged staggered in the one direction on the surface side of the substrate, and each of the light-emitting parts comprises: a support body extending along the one direction; and a plurality of light sources, the plurality of light sources being arranged on the support body along the one direction; and a handle portion, which is provided at a position lower than the surface of the base body, and which can be held by an operator when the base body is placed on a flat surface; The handle is shaped to be hooked by the operator's fingers and is provided on the back side of the base body opposite to the light emitting portion. A recess is provided on the surface of the substrate, The recess has an inclined surface which constitutes a bottom surface and is inclined relative to the surface of the substrate, and is inclined in the opposite directions relative to the inclined surface of the light-emitting portion arranged on one side of the short side direction of the substrate and the inclined surface of the light-emitting portion arranged on the other side of the short side direction of the substrate.

2. The light emitting device according to claim 1, in, The handle portion includes a recessed portion formed in the base body.

3. The light emitting device according to claim 2, in, The recessed portion is arranged on a side surface of the base.

4. The light emitting device according to claim 2 or 3, in, The recessed portions are arranged on both sides of the base in a direction perpendicular to the one direction.

5. The light emitting device according to claim 4, in, The recessed portion has a shape into which an operator's fingers can be inserted from both sides of the base in a direction perpendicular to the one direction.

6. The light emitting device according to claim 2, in, The recessed portion is disposed on at least one side of the substrate in the one direction.

7. The light emitting device according to claim 6, in, The handle portion is provided at a position outside the outermost position of the plurality of light emitting portions in the one direction.

8. The light emitting device according to claim 6, in, The recessed portion has a shape into which fingers of an operator can be inserted from both sides of the base in the one direction.

9. The light emitting device according to claim 2, in, The size of the recessed portion is at least 10 mm in height, 10 mm in width and 10 mm in depth.

10. The light emitting device according to claim 2, in, The recessed portion is a structure formed by cutting a portion from the outer surface of the base.

11. The light emitting device according to claim 1, in, By fixing another member having a smaller area than the base body to the back side of the base body, the handle portion is formed at a position adjacent to the other member.

12. The light emitting device according to claim 11, in, The other components are provided on both end portions of the base along the one direction.

13. The light emitting device according to claim 12, in, A plurality of the other components are separately arranged on the base.

14. The light emitting device according to any one of claims 11 to 13, in, The other components are made of resin.

15. The light emitting device according to claim 1, in, The support body is formed from a metal block.

16. The light emitting device according to claim 1, in, The substrate is made of stainless steel or steel.

17. A light emitting device, comprising: a substrate composed of a metal block extending in one direction; A plurality of light-emitting parts are arranged staggered in the one direction on the surface side of the substrate, and each of the light-emitting parts comprises: A support extending in the one direction ； and A plurality of light sources, arranged on the support body along the one direction; a mounting portion mounted on the back side of the base, protruding from the base to a side opposite to the light emitting portion, and covering a portion of the back side of the base; as well as a handle portion, which is provided on the back side of the base body and can be held by an operator when the mounting portion is placed on a flat surface; The handle is shaped to be hooked by the operator's fingers and is provided on the back side of the base body opposite to the light emitting portion. A recess is provided on the surface of the substrate, The recess has an inclined surface which constitutes a bottom surface and is inclined relative to the surface of the substrate, and is inclined in the opposite directions relative to the inclined surface of the light-emitting portion arranged on one side of the short side direction of the substrate and the inclined surface of the light-emitting portion arranged on the other side of the short side direction of the substrate.

18. The light emitting device according to claim 17, in, When observed from the back side of the base, the area of ​​the portion of the mounting portion protruding from the base to the side opposite to the light-emitting portion is smaller than the area of ​​the base, and the handle portion is provided at a position adjacent to the protruding portion of the mounting portion on the back side of the base.

19. The light emitting device according to claim 18, in, The handle portion is disposed at at least one end portion of the base body in the one direction.

20. The light emitting device according to claim 19, in, The handle portion is provided at a position outside the outermost position of the plurality of light emitting portions in the one direction.

21. The light emitting device according to claim 18, in, The handles are provided at both ends of the base in the short side direction.

22. The light emitting device according to any one of claims 17 to 21, in, The mounting portion includes a duct constituting a flow path for allowing air to flow along the one direction of the base.

23. The light emitting device according to claim 17, in, The mounting portion includes a cover that covers the wire harnesses respectively connected to the light emitting portions.

24. The light emitting device according to claim 17, in, The support body is formed from a metal block.

25. The light emitting device according to claim 17, in, The substrate is made of stainless steel or steel.

26. A drawing device, comprising: The light emitting device according to any one of claims 1 to 25; and A region where a photosensitive material is disposed moves relative to the light emitting device in a direction intersecting the one direction and is irradiated with light from the light emitting device.

27. The drawing device according to claim 26, in, The said region is provided on the surface of a cylindrical member that rotates circumferentially.

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