JP2006015509A - Electromagnetic wave shielding device of flexible flat cable, recording device and liquid jet device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an electromagnetic wave shielding device of a flexible flat cable that is simple in structure, low-priced and has a required electromagnetic wave shielding effect. <P>SOLUTION: The electromagnetic wave shielding device is composed of two electromagnetic wave shielding plates formed of a ferrous metal material, pinching the wide front and rear sides of the flexible flat cable (hereinafter referred to as FFC) 8. An existing frame 4 and a pinching plate 64 provided as a part of an electromagnetic wave shielding clip 62 mounted to the frame 4 are used for the electromagnetic wave shielding plates. The recording device 100 or the like is provided with the electromagnetic wave shielding device 61 of the FFC having the structure and to prevent an electromagnetic wave borne by the FFC 8 from propagating to and hindering the peripheral parts. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention prevents an electromagnetic wave propagation obstacle to a peripheral part of a flexible flat cable (hereinafter referred to as FFC) having one end connected to an electronic substrate provided on a movable part and the other end connected to another electronic substrate. The present invention relates to an FFC electromagnetic shielding device and a recording apparatus including the electromagnetic shielding device.

  Furthermore, the present invention relates to a liquid ejecting apparatus such as an ink jet recording apparatus that performs recording (attaches liquid) on a recording material (liquid ejecting material) by ejecting (ejecting) a liquid such as ink from the head and the liquid The present invention relates to an FFC electromagnetic wave shielding device provided in an injection device.

  Here, the liquid ejecting apparatus uses an ink jet recording head, and is not limited to a recording apparatus such as a printer, a copying machine, and a facsimile machine that records ink on a recording material by discharging ink from the recording head. It is used to include a device for ejecting a liquid corresponding to the application from a liquid ejecting head corresponding to the recording head to a liquid ejecting material corresponding to a recording material and attaching the liquid to the liquid ejecting material.

  In addition to the recording head, as a liquid ejecting head, a color material ejecting head used for manufacturing a color filter such as a liquid crystal display, and an electrode material (conductive paste) used for forming an electrode such as an organic EL display or a surface emitting display (FED) Examples thereof include an ejection head, a bioorganic matter ejection head used for biochip production, and a sample ejection head as a precision pipette.

  Further, the electromagnetic wave shielding device used in the present specification is a structure that can prevent a phenomenon in which an electromagnetic wave radiated from an electronic component or the like on an electronic board constituting an electronic circuit is propagated to the FFC and causes a failure in a peripheral part of the FFC. Means. In particular, the present invention provides a simple and inexpensive structure that prevents the propagation of electromagnetic waves to peripheral parts by actively attenuating the electromagnetic waves propagated to the FFC.

  Various structures for reducing unnecessary radiation noise radiated by being guided by a flat cable and suppressing generation of the radiation noise have been proposed. The following Patent Documents 1 and 2 show an example. In patent document 1, the radiation noise radiated | emitted from a flat cable is aimed at by shielding a part of exposed part of the flat cable provided in the fixed state in the electronic device with a cable fixing tool. Further, in Patent Document 2, a plurality of flat cables connected between different electronic boards are bonded on the same conductive member, thereby matching the ground level between the electronic boards and reducing the level of radiation noise. I am doing so.

  In this case, the former shown in Patent Document 1 simply shields the flat cable, and the level of radiation noise is the same, and is not a fundamental solution for reducing radiation noise. In addition, the latter shown in Patent Document 2 deserves consideration in that the level of radiation noise is actively reduced, but it applies to flat cables provided in a fixed state, and for movable flat cables. The structure is difficult to apply.

  Under such circumstances, an electromagnetic wave shielding device applied to an FFC that is flexibly moved while changing its shape and curvature as the carriage moves is described below. Many ferrite cores were used. There are two types of ferrite cores: a ring type that completely covers the peripheral surface of the FFC, and a split plate type that is used by sandwiching both front and rear surfaces of the FFC.

  Although the former is simple in structure, a gap is inevitably formed between the FFC and the electromagnetic wave removal level is low. On the other hand, the latter can obtain a high removal level of electromagnetic waves, but in addition to the two divided ferrite core plates, a clamping tool made of plastic or the like that sandwiches them and adheres to the FFC is necessary, so that the number of parts increases. Had difficulties. Furthermore, it has been pointed out that a problem common to the two causes an increase in parts costs, leading to an increase in product costs.

  In addition, the electromagnetic wave shielding device using such a ferrite core is intended only for electromagnetic wave shielding, and is provided in the vicinity of a connection portion with a carriage having relatively little FFC movement. Further, as means for reducing the bulge of the FFC generated by the movement of the carriage and ensuring smooth movement of the carriage, means such as fixing the FFC to the frame on the front surface of the carriage by using an adhesive tape is adopted. It was.

Japanese Utility Model Laid-Open No. 5-16331 JP 2004-122484 A

  The present invention has been made in view of the background art and the problems of the background art, and has a simple structure, low cost, and a desired electromagnetic shielding effect. In addition, it is accompanied by movement of FFC. It is an object of the present invention to provide an electromagnetic shielding device for a flexible flat cable capable of reducing the swelling, a recording device including the electromagnetic shielding device, and the like.

  In order to solve the above-described problem, the electromagnetic wave shielding apparatus for a flexible flat cable according to the first aspect of the present invention has a flexible structure in which one end is connected to an electronic substrate provided on a movable portion and the other end is connected to another electronic substrate. An electromagnetic wave shielding device for a flexible flat cable that prevents propagation disturbance of electromagnetic waves carried on the flat cable to surrounding parts, the electromagnetic wave shielding device being made of an iron-based metal material that sandwiches the wide front and rear surfaces of the flexible flat cable. The electromagnetic wave shielding plate is formed, and the arrangement of the electromagnetic wave shielding plate is in the vicinity of a position where the bulge of the flexible flat cable caused by the movement of the movable portion is restricted to be minimized. .

  According to the first aspect of the present invention, the cost of parts can be greatly reduced by using a relatively inexpensive ferrous metal material. Moreover, since it is comprised only by the electromagnetic wave shielding board, the structure is also simple. Moreover, since it is a clamping method, there is no gap between the FFC and the electromagnetic shielding plate, and the level of the electromagnetic shielding effect can be maintained high.

  Moreover, since the electromagnetic shielding plate is disposed near the position where the bulge of the flexible flat cable generated by the movement of the movable portion is restricted to be minimized, the bulge associated with the movement of the flexible flat cable is reduced, Smooth movement can be ensured. Moreover, since the adhesive tape etc. which were provided conventionally for the said objective become unnecessary, reduction of a number of parts can also be aimed at.

  An electromagnetic wave shielding device for a flexible flat cable according to a second aspect of the present invention is the electromagnetic wave shielding device for a flexible flat cable according to the first aspect, wherein the electromagnetic wave shielding plate is formed of an iron-based metal material with respect to a base formed of an iron-based metal material. The front and rear surfaces of the flexible flat cable are substantially the same as one surface of the substrate that functions as an electromagnetic wave shielding plate, and the electromagnetic wave shielding clip that also functions as an electromagnetic wave shielding plate. It is clamped by the back surface of the clamping board which comprises a part of this.

  According to the second aspect of the present invention, it is possible to effectively use the components by using the base body made of an iron-based metal material basically provided in the apparatus main body as a part of the electromagnetic wave shielding plate. Further, by adopting a structure in which the electromagnetic wave shielding clip is attached to the base body, it is possible to variably adjust the mounting position of the electromagnetic wave shielding device.

The electromagnetic wave shielding apparatus for a flexible flat cable according to a third aspect of the present invention is the electromagnetic wave shielding apparatus according to the second aspect, wherein the electromagnetic wave shielding clip is connected to the clamping plate and at least a part of the upper edge of the clamping plate, And a locking plate that is bent to the back surface side and is locked to the other surface of the base body.
According to the third aspect of the present invention, the structure of the electromagnetic wave shielding clip becomes extremely simple, and the cost of parts can be reduced.

The electromagnetic wave shielding apparatus for a flexible flat cable according to a fourth aspect of the present invention is the electromagnetic wave shielding apparatus according to any one of the first to third aspects, wherein the electromagnetic wave shielding apparatus has a long length in the longitudinal direction of the flexible flat cable. By doing so, the working area of the portion that substantially exhibits the electromagnetic wave shielding function is enlarged.
According to the 4th aspect of this invention, it becomes possible to implement | achieve the high electromagnetic wave shielding effect similar to the electromagnetic wave shielding apparatus using the conventional ferrite core with a simple structure cheaply.

According to a fifth aspect of the present invention, there is provided a recording apparatus including a recording head mounted on a lower surface, an electronic substrate in a carriage that reciprocates in a main scanning direction, and another electronic substrate provided in a fixed state in the recording apparatus main body. A recording device comprising a flexible flat cable connected between the flexible flat cable and an electromagnetic wave shielding device for the flexible flat cable for preventing an obstacle to propagation of electromagnetic waves carried on the flexible flat cable is provided. The apparatus is an electromagnetic wave shielding apparatus for a flexible flat cable according to any one of the first to fourth aspects.
According to the fifth aspect of the present invention, it is possible to provide a recording apparatus including an electromagnetic wave shielding device for a flexible flat cable that is inexpensive, has a simple structure, and can exhibit a high electromagnetic wave shielding effect.

  A liquid ejecting apparatus according to a sixth aspect of the present invention includes a liquid ejecting head mounted on the lower surface, and an electronic substrate in a movable part that reciprocates in the main scanning direction, and other liquid substrates provided in a fixed state in the liquid ejecting apparatus main body. A liquid ejecting apparatus including a flexible flat cable connected between an electronic substrate and an electromagnetic wave shielding apparatus for a flexible flat cable that prevents an obstacle to propagation of electromagnetic waves carried on the flexible flat cable to a peripheral portion is provided. The electromagnetic wave shielding device is constituted by an electromagnetic wave shielding plate formed of a ferrous metal material that sandwiches the wide front and rear surfaces of the flexible flat cable, and the arrangement of the electromagnetic wave shielding plate is a flexible generated by the movement of the movable part. It is located near the position where the bulge of the flat cable is regulated to be the smallest. It is an.

  Hereinafter, an electromagnetic wave shielding device for a flexible flat cable according to the present invention and a recording apparatus which is an example of a liquid ejecting apparatus including the electromagnetic wave shielding device will be described. First, an ink jet printer is taken up as the best mode for carrying out the recording apparatus, and the outline of the entire configuration will be described with reference to the drawings. FIG. 1 is a perspective view showing the appearance of an ink jet printer, and FIG. 2 is a perspective view showing the inside of the ink jet printer. FIG. 3 is a side sectional view showing an outline of the ink jet printer, and FIG. 4 is a plan view showing the inside of the ink jet printer.

  In the illustrated ink jet printer 100, a feeding tray 2 on which a recording material P (hereinafter also simply referred to as paper P), which is an example of a liquid ejecting material, can be stacked. In the inkjet printer, recording is performed on the sheet P fed from 2 and the recorded sheet P is discharged onto the discharge stacker 50 located below the front surface. Further, the ink jet printer 100 is provided with a scanner unit 5 having a lid 15 that can be opened and closed on the upper surface of the printer main body 3 as shown in FIG. In addition, an operation panel 11 is provided on the side of the scanner unit 5 so that each operation of capturing an image using the scanner unit 5 and recording an image using the printer main body 3 can be performed simultaneously. ing. Further, the scanner unit 5 itself can be rotated about the rotation shaft 17, so that the upper surface of the printer body 3 is opened as shown in FIGS. 2 and 4. The internal structure of the carriage 10 and the platen 28, which will be described later, can be visually confirmed, and maintenance and the like can be performed.

  As for the paper P placed on the feeding tray 2, only the uppermost paper P is pulled out by a pick-up roller and a separating unit (not shown) and sent out toward the paper transport path. As shown in FIG. 3, the paper P guided to the paper transport path is sandwiched by the transport roller 19 constituted by the transport drive roller 19a and the transport driven roller 19b. It is transported by a predetermined transport amount in the sub-scanning direction Y orthogonal to the main scanning direction X by driving rotation.

  Among these, a plurality of driven rollers 19b are provided, and are individually supported by a roller holder 18 so as to be driven to rotate. Further, the roller holder 18 constantly receives a biasing force from a biasing means (not shown), whereby the transport driven roller 19b is always kept in a nip state in pressure contact with the transport drive roller 19a.

  The sheet P conveyed in a state of being pinched by the conveying roller 19 is pressed from above by an auxiliary pressing roller and a pressing plate (not shown) located near the conveying driven roller 19b and downstream in the sheet conveying direction A. It is guided to the recording position 26 below the recording head 13 in a state where the lifting is prevented. The paper P guided to the recording position 26 is detected by a detection device (not shown) to detect the passage timing and the like, recording is started, the reciprocating operation of the carriage 10 in the main scanning direction X, and the feeding of the paper P in the paper transport direction A By the operation, desired recording is performed almost over the recording surface of the paper P.

  A recording head 13, which is an example of a liquid ejecting head that performs recording by ejecting (ejecting) ink, which is an example of a liquid, onto the paper P or the like is mounted on the lower surface of the carriage 10. Further, as shown in FIG. 2, ink cartridges C of respective colors such as black, cyan, magenta, and yellow are detachably mounted on the carriage 10. In addition, a part of an endless belt 7 wound between pulleys 6 provided in the vicinity of both ends in the main scanning direction X is connected to the carriage 10 and receives a driving force from a motor (not shown) to receive the carriage. 10 is guided by the carriage guide shaft 12 so as to be able to reciprocate in the main scanning direction X. In the carriage 10, there is provided a small board (not shown) for collecting information such as the ink remaining amount of the ink cartridge C mounted in the carriage 10. One end of a strip-shaped FFC 8 is connected to the small substrate so as to follow the frame 4 located on the front side of the frame made of an iron-based metal material that forms the base of the printer main body. The FFC 8 has a role of transmitting information such as the ink remaining amount of the ink cartridge C mounted in the carriage 10 to a control device (not shown), and the other end of the FFC 8 is a main board provided in a fixed state. It is connected to the.

  Below the recording head 13, a platen 28, which is the main configuration of a recording material support device that defines the gap PG between the head surface of the recording head 13 and the paper P or the like, facing the recording head 13 is provided. It has been. Note that the gap PG is an extremely important element in executing high-precision recording, and is appropriately adjusted according to a change in the thickness of the paper P or the like. This point will be described later.

  A discharge roller 20, which is an example of a liquid ejecting material discharge unit configured by a discharge drive roller 20 a and a discharge driven roller 20 b, is provided downstream of the recording head 13 in the sheet conveyance direction A. Further, the paper P discharged by the discharge roller 20 is discharged onto a placement surface 51 on a discharge stacker 50 which is an example of a liquid injection material receiving portion located further downstream.

  The discharge driven roller 20b is a toothed roller having a plurality of teeth on the outer periphery thereof, and is rotatably supported by a roller holder for the discharge driven roller. An auxiliary driven roller 22 is provided upstream of the discharge driven roller 20b, and the paper P is pressed slightly downward by the auxiliary driven roller 22. Further, the transport driven roller 19b is disposed at a position slightly downstream of the transport driving roller 19a, and the discharge driven roller 20b is disposed at a position slightly upstream of the discharge drive roller 20a. It is arranged on the side.

  With such a configuration, the sheet P is in a curved state commonly called “back-sliding” that slightly protrudes downward between the transport roller 19 and the discharge roller 20 and faces the recording head 13. The sheet P at the position to be pressed is pressed against the platen 28, so that the sheet P is prevented from being lifted and recording is executed normally. The auxiliary driven roller 22 is constituted by a toothed roller, like the discharge driven roller 20b, and is supported by a roller holder for the auxiliary driven roller.

[Example]
Next, the recording material support device 1 applied to the ink jet printer 100, the discharge roller shaft deflection preventing structure 41 which is a part of the support device 1, and the present invention. The FFC electromagnetic wave shielding device 61 will be described. FIG. 5 is an exploded perspective view showing the recording material support device, and FIG. 6 is an enlarged perspective view showing a part of the platen. FIG. 7 is a front view showing a state of cockling of the recording material in a state immediately after the leading end of the recording material reaches the guide inclined surface of the long rib, and FIG. 8 is shown by both the long rib and the short rib. It is a front view which shows the mode of cockling of the recording material in the state in which the recording material is supported. FIG. 9 is an enlarged perspective view showing a structure for preventing the deflection of the discharging roller shaft, and FIG. FIG. 11 is a perspective view showing an FFC feeding state when the carriage is located on the base end (home position) side, and FIG. 12 is a perspective view showing an FFC feeding state when the carriage is located on the moving end side. .

  As shown in FIGS. 3 and 5, the recording material support device 1 is connected to the front guide 30 integrally provided with the platen 28, and is swingably connected to the front guide 30. And a front guide support 31 located on the side. The front guide 30 includes a swing shaft 32 at an upstream end in the paper transport direction A, and includes three engagement shafts 33 as an example in an intermittent state at a downstream end in the paper transport direction A. ing.

  On the other hand, the front guide support 31 is provided at three positions corresponding to the engagement shafts 33 at the upstream end in the paper transport direction A so as to engage with the engagement shafts 33 in a swingable manner. ing. A bearing structure 35 that rotatably supports the discharge roller shaft 21 that rotates together with the discharge drive roller 20a described above is provided downstream of the front guide support 31 in the sheet conveyance direction A. A member extending from the downstream end of the front guide support 31 in the sheet conveyance direction A further downstream is an activation arm 36 that transmits the operation of an operation lever (not shown) to the front guide support 31.

  Note that such a configuration of the recording material support device 1 is a configuration for adjusting the gap PG. By moving an operating lever (not shown) in a predetermined direction, the starter arm 36 or a unit thereof is integrated. For example, the front guide support 31 is rotated counterclockwise in FIG. 3 around the discharge roller shaft 21. When the front guide support 31 is rotated counterclockwise, the front guide 30 that is swingably engaged by the engagement shaft 33 and the engagement finger 34 is centered on the swing shaft 32, for example, FIG. The platen 28 is rotated clockwise, and the platen 28 provided integrally is moved downward to increase the platen gap PG. On the other hand, when an operation lever (not shown) is rotated in the opposite direction, the front guide support 31 and the front guide 30 are rotated in the opposite direction to act to reduce the platen gap PG.

  A plurality of ribs 29 that directly support the lower surface of the paper P with an appropriate interval in the main scanning direction X are provided on the upper surface of the platen 28 provided integrally with the front guide 30. Some of the ribs 29 are short ribs 29S having a rib height H lower than the other ribs 29 and a short rib length L. More specifically, the upper surface of the platen 28 is provided with an ink discarding recess 37 which is an example of a liquid discarding recess having a substantially rectangular shape in plan view. The ink discarding recess 37 has a role of collecting excess ink that has not been used for execution of recording and collecting it in one place. The ink discarding recess 37 absorbs the discarded ink. An unillustrated absorption sponge is provided, and a storage container (not shown) for storing the recovered ink is disposed below an opening (not shown) engraved on the bottom surface of the ink discarding recess 37.

  In the ink discarding concave portion 37, an island portion 38 projecting upward is provided, and a long rib 29L having a rib length L substantially the same as the length of the island portion 38 in the paper transport direction A is provided. And the above-mentioned short rib 29S whose rib length L is shorter than this long rib 29L is provided. In addition, a guide inclined surface 39 that is inclined at a predetermined angle toward the lower side on the upstream side in the paper transport direction A is provided at the end of the long rib 29L and the short rib 29S on the upstream side in the paper transport direction A. .

  The position of the guide inclined surface 39 of the short rib 29S is set so as to shift from the position of the guide inclined surface 39 of the long rib 29L to the downstream side in the paper transport direction A, and the guide inclination of the short rib 29S. The head rubbing at the front end of the paper P due to the lifting action on the surface 39 is prevented. Further, in order to forcibly obtain regular cockling of the paper P, the short ribs 29S and the long ribs 29L are alternately arranged in the main scanning direction X.

  Next, the state of cockling change in the paper P as the paper P is conveyed will be described with reference to FIGS. In a state immediately after the leading edge of the sheet P conveyed toward the recording position 26 is guided by the guide inclined surface 39 of the long rib 29L and reaches the upper surface of the long rib 29L, the cockling of the sheet P is performed. Is formed as shown in FIG. In this state, since the leading edge of the paper P has not yet reached the guide inclined surface 39 of the short rib 29S, the portion slacking under the paper P can be positioned below the upper surface of the short rib 29S. ing. As a result, the difference in rib height H between the long ribs 29L and the short ribs 29S appears clearly, and regular cockling of the paper P is formed as shown in the figure. .

  On the other hand, in the state where the conveyance of the paper P has progressed and the paper P has reached the position where it is supported by both the long ribs 29L and the short ribs 29S, the ribs of the long ribs 29L and the short ribs 29S. The difference in height H acts on the sheet P as it is, and regular cockling of the sheet P is formed as shown in FIG. Therefore, with this configuration of the ribs 29, the paper P is not affected by the progress of conveyance, and a constant and regular cockling state is always obtained, and the occurrence of stains due to ink adhesion due to head rubbing is prevented. It is.

  Further, a large number of streak-like small ribs 40 extending in the transport direction are provided on the upper surface of the island portion 38 where the ribs 29 are not provided. The small rib 40 functions as a dispersion guide uneven portion that disperses the ink accumulated in the slight concave portion on the upper surface of the island portion 38 so as to be inconspicuous and guides the ink to the ink discarding concave portion 37 around the island portion 38. is doing.

  Next, the bearing structure 35 provided for the front guide support 31 will be described in more detail. The bearing structure 35 includes three types of bearing portions having different structures. First, on the base end (home position) side, a ring-shaped base end side bearing portion 42 that holds the entire peripheral surface of the discharge roller shaft 21 is provided. On the moving end side, a U-shaped recessed portion 43 that holds a part of the peripheral surface of the discharge roller shaft 21 and two claw portions 44 that are provided so as to sandwich the discharge roller shaft 21. The moving end side bearing part 45 provided with these is provided.

  An intermediate bearing portion 46 is provided between the proximal end side bearing portion 42 and the moving end side bearing portion 45 and at a position somewhat closer to the proximal end side bearing portion 42. The intermediate bearing portion 46 is a member that constitutes the deflection preventing structure 41 of the discharge roller shaft together with the base end side bearing portion 42 and the moving end side bearing portion 45, and constitutes a main part of the deflection preventing structure 41. .

  The intermediate bearing portion 46 holds a protrusion 47 that holds a part of the inner peripheral surface (front guide support 31 side) of the discharge roller shaft 21 and a part of the outer peripheral surface of the discharge roller shaft 21. It is comprised by providing the latching collar part 48 to do. The protrusion 47 is provided with an inclined surface 49 that holds the peripheral surface near the upper side of the discharge roller shaft 21, and the upstream contact S between the inclined surface 49 and the discharge roller shaft 21 is as shown in FIG. Is set so as to be positioned above the downstream contact point Q between the distal end portion of the locking collar portion 48 and the discharge roller shaft 21. Further, the clearance between the projection 47 and the discharge roller shaft 21 and the clearance between the locking collar 48 and the discharge roller shaft 21 are set to about 10 μm or less during normal times in order to prevent the rotation resistance of the discharge roller shaft 21 from occurring. Has been.

  When the discharge roller shaft deflection preventing structure 41 having such a configuration is provided, when the paper P is held between both the transport roller 19 and the discharge roller 20, the rollers 19 and 20 The discharge roller shaft 21 tends to bend toward the upstream side in the paper transport direction A due to the back tension generated by the difference in rotational torque. However, since the inclined surface 49 of the projection 47 abuts on the peripheral surface of the discharge roller shaft 21 when it is bent by the clearance, further bending of the discharge roller shaft 21 is prevented.

  Next, in a state at the moment when the trailing edge of the paper P is removed from the conveying roller 19, the locking collar portion 48 applies a force in a direction to eliminate the bending generated in the discharging roller shaft 21. The discharge roller shaft 21 tends to bend downstream in the sheet conveying direction A by the inertial force (force caused by the reaction) generated at this time. However, since the locking collar portion 48 is again brought into contact with the peripheral surface of the discharge roller shaft 21 when it is bent by the clearance, further bending of the discharge roller shaft 21 is prevented. Since the upstream contact S is positioned above the downstream contact Q, the amount of movement associated with the deformation of the locking collar 48 is restricted. The expansion tendency of the upper opening formed is suppressed. Therefore, the amount of deflection of the discharge roller shaft 21 is also reduced.

  Further, the positions at which the bearing portions 42, 45, 46 constituting the bearing structure 35 are provided substantially coincide with the positions of the three positions where the engagement shaft 33 and the engagement fingers 34 are provided in the main scanning direction X. It is desirable to set to this, and by configuring in this way, the entire front guide support 31 is prevented from being bent and deformed, and the amount of bending of the discharge roller shaft 21 is further reduced.

  Next, the FFC electromagnetic wave shielding device 61 of the present invention will be described. As described above, the FFC 8 is drawn out from the carriage 10 and extended along the inner wall surface of the frame 4 raised on the front side. The frame 4 is a base that forms the skeleton of the printer body, and is made of an iron-based metal material. In this embodiment, an electromagnetic wave shielding clip 62 is provided in a state of being sandwiched by a part of the frame 4 that is slightly closer to the moving end of the carriage 10 from the center. The electromagnetic wave shielding clip 62 and the frame 4 as an electromagnetic wave shielding plate are provided. Thus, an FFC electromagnetic wave shielding device 61 is configured.

  The electromagnetic wave shielding clip 62 includes a sandwiching plate 64 as a substantially rectangular flat electromagnetic wave shielding plate in which a curved guide surface 63 having a curved periphery is formed toward the back surface side so that the FFC 8 is not caught while the FFC 8 is moving. The locking plate 65 is connected to the upper edge of the sandwiching plate 64 and is formed by bending the back plate side by about 180 ° in a loop shape. The locking plate 65 is provided with narrow connecting portions 66 connected to the holding plate 64 at both ends in the width direction, and the end portion on the free end side of the connecting portion 66 is formed by a rectangular flat plate-like presser plate 67. It is configured by connecting. Note that the presser plate 67 has a front end bent in a cross-section “<” shape to facilitate attachment to the frame 4.

  Further, as the material of the electromagnetic wave shielding clip 62, various materials capable of exhibiting a desired electromagnetic wave shielding effect can be applied in place of the conventional ferrite core, and the material is used as a material cheaper than ferrite, for example, the material of the frame 4. An iron-based metal material such as a cold rolled steel sheet can be used. In addition, when such a material is used, it is predicted that the electromagnetic wave shielding effect is inferior compared to the case where a ferrite core is used. However, the working area is increased by elongating the holding plate 64 in the longitudinal direction of the FFC, for example. Enlargement can cope with it.

  The position where the electromagnetic wave shielding clip 62 is provided is set to the above-described position because the swell and fluctuation of the moving FFC 8 are reduced as the carriage 10 reciprocates, and the smooth reciprocation of the carriage 10 is hindered. This is to prevent things from happening. Therefore, an adhesive tape or the like conventionally provided for the above purpose becomes unnecessary.

[Other embodiments]
The electromagnetic wave shielding device 61 of the flexible flat cable according to the present invention and the recording device including the electromagnetic wave shielding device 61 are basically configured as described above, but within the scope not departing from the gist of the present invention. Of course, it is possible to change or omit the partial configuration. For example, a part of the frame 4 can be used as the FFC electromagnetic wave shielding device 61 and the frame 4 can be bent into a shape similar to the electromagnetic wave shielding clip 62, or an electronic device other than the inkjet printer 100 can be used. On the other hand, it is also possible to apply the FFC electromagnetic wave shielding device 61.

FIG. 2 is a perspective view showing the appearance of an inkjet printer. The perspective view which shows the inside of an inkjet printer. 1 is a side sectional view showing an outline of an inkjet printer. The top view which shows the inside of an inkjet printer. The perspective view which decomposes | disassembles and shows the support apparatus of a recording material. The perspective view which expands and shows a part of platen. The front view which shows the state immediately after the front-end | tip of a paper reaches | attains a long rib. The front view which shows the state in which the paper is supported by both the long rib and the short rib. The perspective view which expands and shows the bending prevention structure of the roller shaft for discharge. The sectional side view which expands and shows the bending prevention structure of the roller shaft for discharge. FIG. 6 is a perspective view showing an FFC extended state when the carriage is positioned on the proximal end side. FIG. 6 is a perspective view showing an FFC feeding state when the carriage is positioned on the moving end side.

Explanation of symbols

1 (recording material) support device, 2 feeding tray, 3 printer body, 4 frame, 5 scanner unit, 6 pulley, 7 endless belt,
8 Flat flexible cable (FFC), 10 Carriage, 11 Operation panel, 12 Carriage guide shaft, 13 Recording head, 15 Lid, 17 Rotating shaft,
18 Roller holder (of the driven roller for conveyance), 19 Roller for conveyance,
19a Carrying drive roller, 19b Carrying driven roller, 20 Ejecting roller,
20a discharge drive roller, 20b discharge driven roller, 21 discharge roller shaft,
22 auxiliary driven roller, 26 recording position, 28 platen, 29 rib,
29S short rib, 29L long rib, 30 front guide,
31 front guide support, 32 swing shaft, 33 engagement shaft, 34 engagement finger,
35 bearing structure, 36 starting arm, 37 ink discarding recess, 38 island,
39 guide inclined surface, 40 small ribs (dispersion guide uneven part),
41 Deflection prevention structure (of discharge roller shaft), 42 Base end side bearing portion, 43 Recessed portion,
44 Claw part, 45 Moving end side bearing part, 46 Intermediate part bearing part, 47 Projection part,
48 latching hook part, 49 inclined surface, 50 discharge stacker, 51 mounting surface,
61 Electromagnetic wave shielding device for flat flexible cable (FFC),
62 electromagnetic wave shielding clip, 63 curved guide surface, 64 clamping plate, 65 locking plate,
66 connecting portion, 67 presser plate, 100 ink jet printer (recording device),
P paper (recording material), PG platen gap, X main scanning direction, Y sub-scanning direction,
A paper transport direction, C ink cartridge, H rib height, L rib length,
Q Downstream contact, S Upstream contact

Claims (6)

This is an electromagnetic wave shielding device for a flexible flat cable that prevents propagation disturbance of electromagnetic waves carried on a flexible flat cable having one end connected to an electronic board provided on a movable part and the other end connected to another electronic board. And
The electromagnetic wave shielding device is constituted by an electromagnetic wave shielding plate formed of an iron-based metal material that sandwiches a wide front surface and a rear surface of a flexible flat cable,
The electromagnetic wave shielding device for a flexible flat cable, characterized in that the electromagnetic wave shielding plate is disposed in a vicinity of a position where the bulge of the flexible flat cable caused by the movement of the movable portion is minimized.   2. The electromagnetic wave shielding plate according to claim 1, wherein the electromagnetic wave shielding plate is configured by mounting an electromagnetic wave shielding clip formed of an iron-based metal material on a base formed of an iron-based metal material. A front surface and a rear surface are sandwiched between one surface of the base body that substantially functions as an electromagnetic wave shielding plate and a rear surface of a clamping plate that forms part of the electromagnetic wave shielding clip that also functions as an electromagnetic wave shielding plate. Electromagnetic wave shielding device for flexible flat cable.   3. The electromagnetic wave shielding clip according to claim 2, wherein the electromagnetic wave shielding clip is connected to the clamping plate and at least a part of an upper edge of the clamping plate, bent in a loop shape on the back surface side, and locked to the other surface of the base body. An electromagnetic wave shielding device for a flexible flat cable, characterized by comprising a stop plate.   The electromagnetic wave shielding device according to any one of claims 1 to 3, wherein the electromagnetic wave shielding device enlarges the working area of a portion that substantially exhibits an electromagnetic wave shielding function by elongating a length in a longitudinal direction of the flexible flat cable. An electromagnetic wave shielding device for a flexible flat cable. A recording apparatus having a recording head mounted on the lower surface and having a flexible flat cable connected between an electronic substrate in a carriage that reciprocates in the main scanning direction and another electronic substrate provided in a fixed state in the recording apparatus main body. Because
The flexible flat cable electromagnetic shielding apparatus which prevents the propagation | transmission obstruction to the peripheral site | part of the electromagnetic wave carried on the flexible flat cable is provided, The said electromagnetic shielding apparatus is the flexible flat of any one of Claims 1-4. A recording apparatus characterized by being an electromagnetic wave shielding device for a cable. A liquid ejecting head is mounted on the lower surface, and a flexible flat cable connected between an electronic substrate in a movable part that reciprocates in the main scanning direction and another electronic substrate provided in a fixed state in the liquid ejecting apparatus main body is provided. A liquid ejecting apparatus,
A flexible flat cable electromagnetic shielding device is provided to prevent the propagation failure of the electromagnetic wave on the flexible flat cable to the surrounding area.
The electromagnetic wave shielding device is constituted by an electromagnetic wave shielding plate formed of an iron-based metal material that sandwiches a wide front surface and a rear surface of a flexible flat cable,
The liquid ejecting apparatus according to claim 1, wherein the electromagnetic shielding plate is disposed in a vicinity of a position where the bulge of the flexible flat cable generated by the movement of the movable portion is restricted to be minimized.

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