JP2016159505A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device capable of reducing variations of the temperature in a recording head.SOLUTION: A recording device includes: a conveyance section for conveying a sheet P; a recording head 30 which is provided to extend in a width direction intersecting a conveyance direction in which the sheet P is conveyed by the conveyance section and performs recording on the sheet P; a support frame 35 for supporting the recording head 30; a conveyance motor 24 and a regulation motor 25 which are disposed on the support frame 35, are provided on one end side and the other end side in the width direction in the recording head 30, respectively, and generate heat by driving; and a connection section 80 which is provided to be in contact with a portion between the one end side and the other end side in the width direction in the recording head 30 and connects each motor 24 and 25. The connection section 80 is formed of a heat conduction material.SELECTED DRAWING: Figure 2

Description

  The present invention relates to a recording apparatus such as an ink jet printer.

  2. Description of the Related Art Conventionally, as a type of recording apparatus, an ink jet printer that records an image or the like by ejecting ink, which is an example of liquid, from a nozzle onto paper, which is an example of a medium, is known. In such a printer, when ink is ejected from a nozzle, a voltage is applied to a piezoelectric element provided in the recording head. At that time, the temperature of the recording head rises due to heat generation of the piezoelectric element, and the recording head may be deformed due to the thermal expansion.

  In particular, when the recording head is a long one whose longitudinal direction is the direction intersecting the paper conveyance direction, among the plurality of nozzles whose positions are different in the longitudinal direction, the nozzle that ejects ink frequently is not. The amount of heat generated by the piezoelectric element is different from that of the nozzle, and a temperature difference occurs in the recording head in the longitudinal direction. At this time, since the deformation amount of the recording head due to thermal expansion differs in the longitudinal direction, the ink ejection characteristics vary from nozzle to nozzle, which may cause deterioration in image quality.

  Therefore, the temperature in the longitudinal direction of the recording head is supported by supporting the recording head by a support member having good thermal conductivity extending along the longitudinal direction of the recording head, and radiating the heat transmitted from the recording head by the support member. There has been proposed an ink jet recording head in which the difference is reduced (for example, Patent Document 1).

JP 2008-62434 A

  By the way, when the recording head is long in the longitudinal direction as in the printer of Patent Document 1, the recording head is generally supported by a support frame. Here, if a motor that generates a large amount of heat compared to the piezoelectric element, for example, a conveyance motor that drives a conveyance unit that conveys paper, is arranged at the longitudinal end of the recording head via the support frame, Even if a support member with good conductivity is provided, a temperature difference may occur in the longitudinal direction of the recording head.

  The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a recording apparatus that can reduce temperature variations in a recording head.

  A recording apparatus that solves the above problem includes a transport unit that transports a medium, and a recording head that extends in a second direction that intersects a first direction in which the medium is transported by the transport unit and that records on the medium. And a support frame that supports the recording head, and a plurality of heat sources that are disposed on the support frame and provided at one end side and the other end side in the second direction of the recording head, respectively, and generate heat when driven. And a connecting portion that is provided in contact with a portion between the one end side and the other end side of the recording head in the second direction and connects the plurality of heating elements. Made of material.

  According to this configuration, heat generated from the plurality of heating elements respectively provided on one end side and the other end side in the second direction, which is the longitudinal direction, in the recording head is made uniform by the heat conduction action of the connecting portion. Therefore, the heat transmitted from each heating element to both ends of the recording head is made uniform. Therefore, temperature variations in the recording head can be reduced.

In the recording apparatus, it is preferable that at least one of the recording head and the heating element includes a heat radiating portion that dissipates at least part of heat generated from the heating element.
According to this configuration, it is possible to suppress an excessive increase in the temperature of the recording head that is warmed by the heat generated from the heating element, and it is possible to suppress a recording defect that accompanies an increase in the temperature of the recording head.

  The recording apparatus includes a head control substrate that controls a liquid ejection operation performed by the recording head, and the head control substrate is adjacent to the recording head with the one heating element interposed therebetween in the second direction. Is preferably provided.

  According to this configuration, since the head control board for controlling the recording head is provided adjacent to the recording head with one heating element sandwiched in the second direction, the wiring connecting the recording head and the head control board is provided. It can be shortened and external noise can be reduced.

  The recording apparatus includes a power supply substrate that converts a voltage input from the outside into a predetermined voltage and outputs the voltage, and the power supply substrate is provided at a position farther from the recording head than the head control substrate. It is preferable.

  According to this configuration, since the power supply board generates a large amount of heat, an excessive temperature rise of the printhead can be suppressed by disposing the power supply board at a position farther from the printhead than the head control board. It is possible to suppress the recording failure accompanying the temperature rise.

  The recording apparatus preferably includes a housing having at least the recording head therein, and further includes a substrate arrangement area in which a plurality of substrates for controlling operations of the recording device are disposed.

  According to this configuration, since the plurality of substrates are collectively arranged in the substrate arrangement region in the housing, the wiring connecting the substrates can be shortened, and the cost can be suppressed.

1 is a side view illustrating a schematic configuration of an embodiment of a printer. FIG. 2 is a front view illustrating a schematic configuration of a printer. FIG. 3 is a perspective view illustrating a schematic configuration of a paper discharge tray. Schematic which shows the structure about the modification of a recording head.

Hereinafter, an embodiment of an ink jet printer (hereinafter sometimes abbreviated as “printer”) which is a kind of recording apparatus will be described with reference to the drawings.
As shown in FIG. 1, the printer 11 (recording apparatus) has a rectangular parallelepiped housing 12. In the housing 12, an example of the medium is a support base 13 that supports the paper P from the lower side in the vertical direction, a transport unit 20 that transports the paper P along the support base 13, and an example of liquid on the paper P. And a recording head 30 that records an image by ejecting a certain ink.

  The transport unit 20 includes a plurality of transport roller pairs 21 that transport the paper P with the direction from the right side to the left side in FIG. 1 as the transport direction (first direction) (four pairs in this embodiment). Further, in the transport direction, the paper P is placed vertically downward at positions upstream and downstream of the support base 13 and between the two transport roller pairs 21 that are separated from each other in the transport direction. Guide portions 22 are provided for guiding by supporting from the side.

  The transport roller pair 21 is in contact with the paper P from the lower side in the vertical direction, and is driven to rotate. The driven transport roller 21a is in contact with the paper P from the upper side in the vertical direction and is rotated by the drive rotation of the drive transport roller 21a. 21b. Moreover, the drive conveyance roller 21a is connected with the conveyance motor 24, and the drive conveyance roller 21a rotates by the drive of the conveyance motor 24 (refer FIG. 2). That is, the transport unit 20 is driven along the upper surface of the support base 13 and the upper surface of the guide unit 22 by the drive transport roller 21a being rotationally driven in a state where the transport roller pair 21 sandwiches the paper P from above and below in the vertical direction. The paper P is conveyed.

  The recording head 30 is a so-called line head that extends with the width direction (second direction) intersecting both the transport direction and the vertical direction as a longitudinal direction, and is provided at a position facing the support base 13. Further, the lower surface of the recording head 30 that faces the support base 13 constitutes a nozzle forming surface 32 on which a plurality of nozzle rows 31 extending in the width direction are formed. The recording head 30 records an image over substantially the entire area in the width direction of the paper P conveyed on the support base 13 by ejecting ink from the plurality of nozzles 31 a constituting the nozzle row 31.

  As shown in FIGS. 1 and 2, a support frame 35 capable of supporting the recording head 30 is fixedly disposed via a bracket (not shown) at a position vertically above the support base 13 in the housing 12. ing. In other words, the recording head 30 is supported by the support frame 35 and is disposed at a position facing the support base 13 in the vertical direction. The support frame 35 includes a pair of metal support plate portions 36 that are in contact with each other at one end and the other end in the longitudinal direction of the recording head 30, and a metal long plate portion that is laid between the support plate portions 36. 37.

  Further, the recording head 30 is provided with an adjustment mechanism that adjusts the distance between the nozzle forming surface 32 and the upper surface of the support base 13 in accordance with the thickness of the paper P, that is, a mechanism that enables adjustment of a so-called platen gap. The adjustment mechanism is configured by, for example, a ball screw or a rack and pinion. And this platen gap is adjusted by the rotational drive of the adjustment motor 25 which comprises a part of adjustment mechanism (refer FIG. 2).

  In FIG. 1, an insertion port 27 into which the paper P is inserted into the housing 12 is opened on the right side wall of the housing 12. Further, on the opposite side, on the left side wall of the housing 12, a discharge port 28 through which the paper P is discharged from the inside of the housing 12 is opened. Further, a paper discharge tray 29 extending from the housing 12 toward the downstream side in the transport direction is formed immediately below the discharge port 28.

  That is, the printer 11 transports the paper P inserted from the insertion port 27 by the transport unit 20, performs recording by the recording head 30, and then discharges the paper P from the discharge port 28 to the outside of the housing 12. The recorded paper P discharged from the discharge port 28 is placed on a placement surface 29 a that is the upper surface of the discharge tray 29 in the vertical direction. In addition, a medium placement portion on which the pre-recording paper P is placed in a stacked state is provided in a lower region in the vertical direction in the housing 12, and one sheet of paper P placed on the medium placement portion is provided. A configuration may be employed in which conveyance is performed one by one and recording is performed one after another.

  A liquid storage section 40 that stores ink supplied to the recording head 30 is provided at a position on the upper side in the vertical direction in the housing 12 and on the downstream side (left side in FIG. 1) in the transport direction. The liquid storage unit 40 includes ink cartridges 41, 42, 43, and 44 that store inks of different colors (four types in this embodiment). Each of the ink cartridges 41 to 44 has a rectangular parallelepiped shape extending in the width direction and is detachably attached to the housing 12.

  In each of the ink cartridges 41 to 44, for example, inks of different colors such as cyan, yellow, magenta, and black are respectively stored. These inks are supplied from the liquid reservoir 40 to the recording head 30 by an ink tube 45 connected to the liquid reservoir 40 and the recording head 30. The ink of each color supplied to the recording head 30 is ejected from the corresponding nozzle row 31 and attached to the paper P.

  As shown in FIGS. 1 and 2, an ink tray 50 that receives ink falling from the recording head 30, the liquid storage unit 40, and the ink tube 45 is provided at a position on the lower side in the vertical direction in the housing 12. Yes. The ink tray 50 is composed of a plurality of trays. In the present embodiment, the ink tray 50 is composed of two stages of a first tray 51 and a second tray 52.

  The first tray 51 is provided so as to occupy the area on the lower side in the vertical direction of the recording head 30 and the liquid storage unit 40 in the transport direction. The second tray 52 is provided so as to occupy an area in the vertical direction lower than the first tray 51 and in the vertical direction lower than the position where the end of the ink tube 45 connected to the liquid storage unit 40 is provided. It has been. That is, the ink tray 50 is provided so as to overlap the recording head 30, the liquid storage unit 40, and the ink tube 45 when viewed from below in the vertical direction. In addition, an extending portion 53 extending toward the first tray 51 is provided on a part of the side wall of the second tray 52.

  Various substrates for controlling the operation of the printer 11 are arranged in a part of the inside of the casing 12 on the right side in FIG. Has been. In the present embodiment, a main board 61, a head control board 62, an ink supply board 63, and a power supply board 64 are arranged. Each of the substrates 61 to 64 is connected to corresponding members or substrates by wiring (not shown).

  That is, the substrates 61 to 64 are collectively arranged in a substrate arrangement area 70 different from an area in which members for performing a recording operation such as the conveyance unit 20 and the recording head 30 are arranged in the housing 12. Further, these substrates 61 to 64 are arranged so as not to overlap the recording head 30, the liquid reservoir 40, the ink tube 45, and the ink tray 50 when viewed from the vertical direction, the width direction, and the transport direction.

  In the substrate arrangement region 70, the main substrate 61 is provided at a position on the upper side in the vertical direction. The main board 61 has a function of controlling operations of the transport motor 24 that drives the transport unit 20 and the adjustment motor 25 that drives the adjustment mechanism, and that communicates with an external terminal such as a PC.

  The head control board 62 is provided at a position overlapping the main board 61 when viewed from the width direction and adjacent to the recording head 30 with the adjustment motor 25 interposed therebetween (see FIG. 2). The head control board 62 is provided at a position closest to the recording head 30 among the boards 61 to 64. The head control board 62 has a function of applying a voltage to a piezoelectric element provided in the recording head 30 in order to discharge ink from the nozzle 31a, that is, a function of controlling the discharge amount of ink discharged from the nozzle 31a. Have

  The ink supply substrate 63 is provided at a position slightly below the center in the vertical direction. The ink supply substrate 63 has a function of controlling driving of a mechanism for supplying ink from the ink cartridges 41 to 44 to the recording head 30, for example, a pressure pump.

  The power supply board 64 is a position on the lower side in the vertical direction, and is disposed at a position farthest from the recording head 30 among the boards 61 to 64. The power supply board 64 has a function of converting a voltage input from the outside (for example, an outlet) into a predetermined voltage required by the printer 11. Therefore, during operation of the printer 11, the power supply board 64 generates the largest amount of heat among the boards 61 to 64.

  As shown in FIG. 2, the conveyance motor 24 and the adjustment motor 25 are arranged on the support plate portions 36 where both ends of the recording head 30 in the support frame 35 are in contact with each other. A transport motor 24 for driving the drive transport roller 21 a is disposed on the support plate 36 on one end side (the left side in FIG. 2) which is the far side of the substrate placement region 70 among the support plate portions 36, and vice versa. An adjustment motor 25 that adjusts the platen gap is disposed on the support plate portion 36 on the other end side (right side in FIG. 2) close to the substrate arrangement region 70 that is the side. These motors 24 and 25 are connected to each other by a connecting portion 80.

  The connecting portion 80 is bent from both ends in the longitudinal direction of the long portion 81 and the long portion 81 extending along the longitudinal direction of the recording head 30 on the upper side in the vertical direction of the recording head 30. And a branched portion 83 that branches from the middle of the long portion 81 in the longitudinal direction and contacts the middle portion of the recording head 30 in the longitudinal direction. That is, the branching portion 83 branched from the long portion 81 of the connecting portion 80 is in contact with a portion between one end side and the other end side in the longitudinal direction of the recording head 30.

  Further, the connecting portion 80 is formed of a heat conductive material that is a material having good heat conductivity, and heat generated from the transport motor 24 and the adjustment motor 25 is quickly conducted. Examples of the heat conductive material include metals such as aluminum and copper, and resins such as carbon nanotubes and heat conductive plastics. The thermal conductivity of the connecting portion 80 is configured to be higher than the thermal conductivity of the support frame 35. Since the transport motor 24 and the adjustment motor 25 connected by the connecting unit 80 generate a large amount of heat when driven, the transport motor 24 and the adjustment motor 25 function as a heating element and cause the temperature of the recording head 30 to rise.

Next, the ink tray 50 will be described.
As shown in FIG. 3, the ink tray 50 includes a box-shaped first tray 51 opened on the upper side and a box-shaped second tray 52 opened on the upper side. The first tray 51 has a bottom surface that is larger in area than the support base 13 when viewed from the vertical direction, and an absorbing material that absorbs ink is provided on the bottom surface (not shown). Further, a side wall is provided so as to surround the bottom surface from four sides, and a notch 54 is formed in a part of the side wall located at the corner of the bottom surface.

  Compared to the first tray 51, the second tray 52 has a bottom area that is small, and a side wall that surrounds the bottom surface from all sides is formed to be large. Similarly, an absorbing material that absorbs ink is also provided on the bottom surface of the second tray 52 (not shown). In addition, an extending portion 53 that extends vertically upward toward the cutout portion 54 formed in the first tray 51 is formed on a part of the side wall that surrounds the bottom surface from four sides. An ink introduction member 55 is provided across the cutout portion 54 and the extending portion 53. The ink introduction member 55 is made of an absorbent material provided on the bottom surface of the ink tray 50 and has a function of moving the ink absorbed by the first tray 51 toward the second tray 52. That is, the ink tray 50 is configured to sequentially move the ink received by the first tray 51 to the second tray 52.

  Next, the operation of the printer 11 will be described. As a premise, when the conveyance motor 24 located on one end side in the longitudinal direction of the recording head 30 is compared with the adjustment motor 25 located on the other end side in the longitudinal direction, the amount of generated heat is determined by the conveyance motor. It is assumed that the heat generation amount of 24 is higher than the heat generation amount of the adjusting motor 25.

  As shown in FIG. 2, both end portions of the recording head 30 are in contact with the support plate portion 36 of the support frame 35 with which the transport motor 24 and the adjustment motor 25 are in contact. Therefore, heat generated by driving the motors 24 and 25 is transmitted to both end portions of the recording head 30 via the support plate portion 36. In this case, if the connecting portion 80 does not exist, high-heat generation heat from the conveyance motor 24 is transmitted to one end side in the longitudinal direction of the recording head 30, while the other end side in the longitudinal direction of the recording head 30. In this case, heat of a low calorific value from the adjusting motor 25 is transmitted to the recording head 30, and the recording head 30 has a temperature variation in the longitudinal direction.

  However, in the present embodiment, the transport motor 24 and the adjustment motor 25 are connected by a connecting portion 80 formed of a heat conductive material that is a material having good heat conductivity. Therefore, for example, a relatively large amount of heat generated in the transport motor 24 and a relatively small amount of heat generated in the adjustment motor 25 are made uniform by the heat conduction action by the connecting portion 80. As a result, variation between the heat transmitted from the transport motor 24 to one end of the recording head 30 and the heat transmitted from the adjustment motor 25 to the other end of the recording head 30 is reduced.

  Further, the heat of the motors 24 and 25 that is made uniform by the heat conduction action by the connecting portion 80 is transmitted from the bent portion 82 of the connecting portion 80 to the long portion 81, and then from the long portion 81 to the branch portion 83. To the middle portion of the recording head 30 in the longitudinal direction. As a result, the heat of the motors 24 and 25 made uniform by the heat conduction action by the connecting portion 80 is transmitted to both ends in the longitudinal direction of the recording head 30 and in the middle thereof. Variations in temperature at are reduced.

  (1) In the recording head 30, heat generated from the transport motor 24 and the adjustment motor 25 provided on one end side and the other end side in the width direction, which is the longitudinal direction, is made uniform by the heat conduction action of the connecting portion 80. Therefore, the heat transmitted from the transport motor 24 and the adjustment motor 25 to both ends of the recording head 30 is made uniform. Therefore, temperature variations in the recording head 30 can be reduced.

  (2) A head control substrate 62 that controls the ejection amount of ink ejected from the nozzles 31 a of the recording head 30 is provided at a position closest to the recording head 30 among the substrates 61 to 64. Therefore, the wiring connecting the recording head 30 and the head control board 62 can be shortened, and noise from the outside can be reduced.

  (3) Since the power supply substrate 64 generates a large amount of heat, the power supply substrate 64 is arranged at a position farthest from the recording head 30 among the substrates 61 to 64. Therefore, an excessive temperature rise of the recording head 30 can be suppressed, and a recording failure due to an increase in ink viscosity accompanying a temperature increase of the recording head 30 can be suppressed.

  (4) Since each board | substrate 61-64 is arrange | positioned collectively in the board | substrate arrangement | positioning area | region 70 in the housing | casing 12, the wiring connected between each board | substrate 61-64 can be shortened, and cost can be suppressed. it can. Further, it is advantageous from the viewpoint of EMC (Electro-Magnetic Compatibility). Furthermore, when each board | substrate 61-64 is cooled, the cooling can be performed efficiently.

  (5) It is not preferable that the ink adheres to each of the substrates 61 to 64. Therefore, in the present embodiment, the substrates 61 to 64 are arranged so as not to overlap the recording head 30, the liquid storage unit 40, and the ink tray 50 when viewed from the vertical direction, the width direction, and the transport direction. Therefore, even if ink leakage may occur, the risk of ink adhering to each of the substrates 61 to 64 can be reduced.

  (6) Since the ink tray 50 is provided over the area on the lower side in the vertical direction of the recording head 30, the liquid storage unit 40, and the ink tube 45, even if an ink leak occurs, the ink tray 50 Can receive.

In addition, you may change the said embodiment as follows.
In the above embodiment, as shown in FIG. 4, a configuration may be adopted in which a heat sink 90 is attached as a heat radiating portion that dissipates heat on the side surface on the upstream side in the transport direction of the recording head 30. By providing the heat sink 90, it is possible to prevent the temperature of the recording head 30 from excessively rising due to heat generated by the transport motor 24 and the adjustment motor 25. Further, since the piezoelectric element provided in the recording head 30 also generates heat when a voltage is applied, it is possible to suppress the temperature of the recording head 30 from being excessively increased by heat generated from the piezoelectric element.

  Further, the heat sink 90 may be configured to be attached to the upper surface that is the upper side in the vertical direction or the side surface that is the downstream side in the transport direction of the recording head 30. Moreover, the structure attached to each motor 24 and 25 may be sufficient. In that case, it is preferable to attach to both. Moreover, the structure which cools by providing the fan which blows instead of the heat sink 90, and the pipe | tube through which a liquid flows may be sufficient as a thermal radiation part.

  In the above embodiment, the substrate placement area 70 may be configured to be partitioned by a partition wall in the housing 12 or a unit attached from the outside of the housing 12. If it is this structure, when cooling a board | substrate, the efficiency can be raised.

  In the above-described embodiment, the arrangement of the power supply substrate 64 is not limited to the configuration provided in the position farthest from the recording head 30 in the substrate. For example, it is only necessary that the heat generated from the power supply substrate 64 be provided at a distance that does not reach the recording head 30.

  In the above embodiment, the arrangement of the head control board 62 is not limited to the configuration provided in the position closest to the recording head 30 in the board. For example, it is only necessary that the wiring connecting the head control board 62 and the recording head 30 does not have a large noise.

  In the above embodiment, the heating element is not limited to the transport motor 24 and the adjustment motor 25. For example, a motor for driving a cleaning mechanism for cleaning the nozzle forming surface 32 of the recording head 30 or an electromagnetic clutch may be used.

  In the above embodiment, the nozzle row 31 formed on the nozzle formation surface 32 of the recording head 30 is not limited to the configuration along the width direction, which is the direction in which the recording head 30 extends. For example, by arranging the nozzle rows 31 obliquely with respect to the width direction, a higher quality image can be formed without increasing the number of nozzles 31a.

  In the above embodiment, the support frame 35 may have the function of the connecting portion 80. In this case, the support frame 35 is formed of a heat conductive material that is a material having good heat conductivity. A configuration in which the long plate portion 37 constituting the support frame 35 is in contact with the recording head 30 is preferable.

In the above embodiment, the connecting portion 80 may not be provided with the branch portion 83. For example, a configuration in which the long portion 81 is in contact with the recording head 30 may be used.
In the above-described embodiment, the number of heating elements connected by the connecting portion 80 is not limited to two, that is, the conveyance motor 24 and the adjustment motor 25 that are provided at the longitudinal ends of the recording head 30. For example, a configuration in which three or more heating elements including a heating element such as a motor or an electromagnetic clutch provided at a position separated from the support frame 35 are connected may be used.

  In the above-described embodiment, each of the substrates 61 to 64 may be configured to overlap the recording head 30, the liquid storage unit 40, and the ink tray 50 when viewed from the width direction or the conveyance direction. If it is provided at a position that does not overlap in the vertical direction, even if ink leakage should occur, the possibility of ink adhering to the substrates 61 to 64 can be reduced. Furthermore, the length of the wiring connected to each of the substrates 61 to 64 can be shortened.

  In the above-described embodiment, the recording apparatus can be jetted by flowing as a fluid other than ink (liquid, a liquid material in which particles of functional material are dispersed or mixed in the liquid, a fluid such as a gel, or a fluid. It may be a fluid ejecting apparatus that performs recording by ejecting or ejecting (including solid). For example, recording is performed by ejecting a liquid material in which a material such as an electrode material or a color material (pixel material) used for manufacturing a liquid crystal display, an EL (electroluminescence) display, and a surface emitting display is dispersed or dissolved. A liquid ejecting apparatus may be used. Moreover, the fluid body injection apparatus which injects fluid bodies, such as a gel (for example, physical gel), may be sufficient. The present invention can be applied to any one of these fluid ejecting apparatuses. In the present specification, the term “fluid” is a concept that does not include a fluid consisting only of gas. Examples of the fluid include liquid (inorganic solvent, organic solvent, solution, liquid resin, liquid metal (metal melt), etc. ), Liquids, fluids, powders (including granules and powders), and the like.

  DESCRIPTION OF SYMBOLS 11 ... Printer (recording apparatus), 12 ... Housing | casing, 20 ... Conveyance part, 24 ... Conveyance motor (heating element), 25 ... Adjustment motor (heating element), 30 ... Recording head, 35 ... Support frame, 62 ... Head control Substrate, 64 ... power supply substrate, 70 ... substrate placement region, 80 ... connecting portion, 90 ... heat sink (heat radiating portion).

Claims (5)

A transport unit for transporting the medium;
A recording head that extends in a second direction intersecting a first direction in which the medium is conveyed by the conveying unit and that records on the medium;
A support frame for supporting the recording head;
A plurality of heating elements that are arranged on the support frame and are respectively provided on one end side and the other end side in the second direction of the recording head, and generate heat by driving;
A contact portion provided in contact with a portion between the one end side and the other end side of the recording head in the second direction and connecting a plurality of the heating elements;
The recording apparatus according to claim 1, wherein the connecting portion is formed of a heat conductive material.   The recording apparatus according to claim 1, wherein at least one of the recording head and the heating element includes a heat radiating unit that dissipates at least part of heat generated from the heating element.   A head control board for controlling a liquid discharge operation performed by the recording head, and the head control board is provided adjacent to the recording head with the one heating element interposed therebetween in the second direction; The recording apparatus according to claim 1, wherein:   A power supply board that converts a voltage input from the outside into a predetermined voltage and outputs the voltage is provided, and the power supply board is provided at a position farther from the recording head than the head control board. The recording apparatus according to claim 3.   5. The apparatus according to claim 1, further comprising: a housing having at least the recording head therein, wherein the housing includes a substrate arrangement region in which a plurality of substrates for controlling the operation of the recording apparatus are disposed. The recording apparatus according to any one of the above.