JP2006095963A - Recording device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a recording device from which only a recorded material guide member can be easily removed during repair and maintenance of the recording device. <P>SOLUTION: Positioning of a paper guide rear member 45 in the main scanning direction X (the lateral direction) is executed in a state of being abutted on the inside face of a right side frame 13. Positioning of the paper guide rear member 45 in the direction (a vertical direction and front/rear directions) orthogonal to the main scanning direction X is executed after fitting positioning protruding parts 452, 453 to positioning holes 134, 135 of the right side frame 13. A peripheral groove 474, which is formed to the end part 473 of a first paper discharge driving roller shaft 47, a peripheral groove 484, which is formed to the end part 483 of a second paper discharge driving roller shaft 48, a locking piece 451, and the tip part FT of a reinforcing frame 45F are connected by a torsion coil spring 13b. The paper guide rear member 45 is locked after being energized in the direction of abutting on the right side frame 13. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention provides a carriage that supports a recording head that ejects ink onto a recording material so as to be reciprocable in the main scanning direction, and a recording surface of the recording material that is transported in the sub-scanning direction is opposed to the head surface of the recording head. The recording material support surface that is slidably supported from the back side of the recording surface, the borderless recording ink discard groove formed on the recording material support surface, and the recording material guide having the ink absorber disposed in the ink discard groove The present invention relates to a recording apparatus including a member.

  A recording apparatus such as a so-called ink jet printer is formed by a conveyance drive roller or the like while a recording surface of a recording material is opposed to the head surface of a recording head mounted on a carriage reciprocated in the main scanning direction and at a predetermined interval. A recording material sliding contact support portion (so-called “platen”, hereinafter referred to as “platen”) for slidingly supporting the back surface of the recording material conveyed in the sub-scanning direction is provided. In recent years, recording apparatuses capable of performing borderless recording (printing) for performing recording without margins on four sides of a recording material are generally used. Positions corresponding to the start and rear ends of the recording material and the side edges of the recording materials of each fixed size for performing recording while discarding ink outside the recording material in the vicinity of the end of the recording material Is provided.

  In addition, in a recording apparatus such as an ink jet printer, a so-called home position is generally set on one end side of the reciprocating movement area of the carriage so that the carriage waits outside the platen while recording is not being performed. Is. The home position is normally set outside the platen, and a so-called ink system is provided. A general ink system has a carriage lock mechanism that fixes the carriage at a home position, a capping mechanism that seals the head surface of the recording head, and prevents the head surface from drying.

  On the other hand, on the other end side of the reciprocating region of the carriage, an operation of periodically discarding ink to prevent nozzle clogging, that is, a so-called periodic flushing operation is performed separately from the borderless recording ink discarding groove. For this purpose, there are provided ink discarding holes (so-called “flushing ducts”, hereinafter referred to as “flushing ducts”). In some cases, the flushing duct is provided integrally with the ink system on one end side (home position side) in the main scanning direction.

  In a recording apparatus such as an ink jet printer having such a configuration, ink is discarded into an ink absorber disposed in an ink discarding groove for borderless recording or a flushing duct, and the discarded ink is absorbed by the ink. It is held and accumulated in the body. Naturally, since the amount of ink that can be stored in the ink absorber is finite, if the amount of ink stored in the ink absorber exceeds the limit, it will leak to the outside or ink may be deposited on the surface of the ink absorber in the ink discarding groove. There is a risk that it floats up and adheres to the recording material and becomes dirty. In order to solve such a problem, the amount of ink ejected to the ink absorber is calculated based on the ink ejection control, and when the calculated integrated value of the ink ejection amount reaches a predetermined value, that fact ( A conventional technique for displaying to the user that it is time to replace the ink absorber is known (see, for example, Patent Document 1).

  When the ink storage amount of the ink absorber reaches the limit amount, the recording material guide member on which the platen or the like is formed is removed from the recording apparatus main body according to the manufacturer's repair maintenance, and the ink absorber is replaced, or It is necessary to replace the recording material guide member with a new one. However, generally, a conveyance drive roller and a discharge drive roller are disposed before and after the recording material guide member (upstream and downstream in the sub-scanning direction), and a carriage is disposed above the recording material guide member. Since a guide shaft, a known linear scale, and the like are disposed, it is often difficult to remove only the recording material guide member. As a conventional technique related to the assembly structure of the recording apparatus, for example, a conventional technique for facilitating the assembly of each component at the time of manufacturing the recording apparatus is known (see, for example, Patent Document 2).

JP 2002-86760 A JP 2002-347304 A

  However, the above-described Patent Document 1 only discloses a technique for displaying to the user that the ink accumulation amount of the ink absorber has reached the limit, and the ink accumulation amount of the ink absorber is limited. No information is disclosed on how to replace the recording material guide member after reaching the above. Further, Patent Document 2 described above is in the manufacturing process of the recording apparatus, and does not assume that only the recording material guide member is removed and replaced in the repair maintenance of the recording apparatus after manufacture. No maintenance is disclosed about the maintenance after the ink storage amount reaches the limit.

  The present invention has been made in view of such a situation, and an object thereof is to provide a recording apparatus in which only a recording material guide member can be easily removed at the time of repair and maintenance of the recording apparatus.

  To achieve the above object, according to a first aspect of the present invention, there is provided a carriage that supports a recording head that ejects ink onto a recording material so as to be reciprocable in the main scanning direction, and a recording material that is conveyed in the sub-scanning direction. And a recording material guide member having a recording material support surface that is slidably supported from the back side of the recording surface so that the recording surface faces the head surface of the recording head, and is attached to a predetermined mounting position. The recording material guide member in the formed state and the carriage moved to the movement limit position on one end side in the main scanning direction are one end side in the main scanning direction of the recording material guide member and the main body of the carriage. The other end side in the scanning direction is disposed so as to partly intersect with the other side of the scanning direction, and the recording material guide member performs main scanning with a movement width equal to or greater than the intersection width of the three-dimensional intersection from the attachment position. To the other end of the direction Thus the removable condition, it is a recording apparatus wherein.

  The recording material guide member and the carriage that has been moved to the movement limit position on one end side in the main scanning direction (generally the position set as the home position) are one end of the recording material guide member in the main scanning direction. The side and the other end side of the carriage in the main scanning direction are disposed so as to partially intersect each other. This is a positional relationship that inevitably occurs when trying to miniaturize the recording apparatus by minimizing the lateral width (width in the main scanning direction) of the recording apparatus. Due to the increase in the number of ink colors in recent years, the carriage has become larger, and the recording head has been arranged near the center of the bottom of the carriage.

  If the end of the platen (recording material support surface) on the home position side is the end of the recording material guide member, and an ink system such as a carriage lock mechanism or a capping mechanism is arranged immediately outside the platen (recording material support surface), the arrangement becomes efficient. The lateral width of the recording apparatus can be reduced. In general, there are many recording apparatuses having such an arrangement. In such an arrangement, at the carriage position (home position) where the carriage is locked by the carriage lock device and the head surface of the recording head is sealed by the capping mechanism, a part of the carriage is the end of the recording material guide member. And the three-dimensional intersection. This is because the length from the head surface sealing member of the capping mechanism to the end of the recording material guide member (the end of the platen at the home position) is shorter than the length from the recording head to the side edge of the carriage. For this reason, the carriage and the recording material guide member partially cross each other vertically.

  Such a partial three-dimensional intersection position relationship between the carriage in the home position and the recording material guide member naturally does not cause any problem in terms of the function and performance of the recording apparatus. However, when the recording material guide member is removed from the recording apparatus during repair maintenance, the three-dimensional intersection between the carriage and the recording material guide member becomes a problem. As described above, the conveyance drive roller and the discharge drive roller are disposed before and after the recording material guide member (upstream side and downstream side in the sub-scanning direction). Inevitably, there will only be an upward path. However, the upper side of the recording material guide member is the carriage movement path, and the carriage and the recording material guide member partially intersect even if the carriage is moved to the movement limit position on one end side, that is, the home position. Therefore, conventionally, one end side of the recording material guide member hits the carriage as it is, and the recording material guide member cannot be removed.

  Therefore, the carriage guide shaft that is rotatably supported by the main body frame of the recording apparatus is removed, the endless belt that transmits the rotational driving force of the carriage motor to the carriage is removed, and in some cases, the linear scale is also removed, and the carriage is installed in the recording apparatus. The recording material guide member cannot be removed unless it is removed from the recording medium. After replacement of the recording material guide member, etc., when parts such as the carriage and the carriage guide shaft are assembled again, PG (the distance between the head surface of the recording head and the platen. It must be defined with high accuracy to affect it.) Must be adjusted. Therefore, the work of replacing the recording material guide member in repair maintenance requires a lot of work processes and time, and is not very efficient.

  Therefore, with the carriage moved to the movement limit position on one end side in the main scanning direction, the recording material guide member attached to the predetermined attachment position is crossed at the three-dimensional intersection of the recording material guide member and the carriage. A recording material guide member mounting structure that is removable by moving to the other end side in the main scanning direction with a moving width greater than or equal to the width. When the recording material guide member is removed, the recording material guide member is moved in the removal direction (the other end side in the main scanning direction) with a movement width equal to or greater than the intersection width of the solid intersection of the recording material guide member and the carriage. Further, it is possible to eliminate the three-dimensional intersection between the carriage and the recording material guide member that has been moved to the movement limit position on one end side in the main scanning direction. Accordingly, the recording material guide member can be removed without removing the carriage from the recording apparatus.

  The movement space in the removal direction of the recording material guide member when removing the recording material guide member is a carriage movement space (carriage required for moving the head surface of the recording head to the other end in the main scanning direction of the platen. Since a space having a width corresponding to the length from the recording head mounting position to the side edge on the other end side in the main scanning direction is inevitably generated outside the platen (the other end side in the main scanning direction), the space Can be used. That is, the main scanning direction width of the recording material guide member is set to the carriage moving space on the outer portion of the platen by the moving width in the removal direction (the other end side in the main scanning direction) required when the recording material guide member is attached or detached. By shortening within the range, the moving space can be secured without increasing the size of the recording apparatus.

  Accordingly, without increasing the width (horizontal width) of the main body of the recording apparatus in the main scanning direction, the recording material guide member is moved from the mounting position to the other end side in the main scanning direction with a moving width equal to or greater than the intersection width of the three-dimensional intersection with the carriage. It can be configured to be movable. The same applies to the case where a flushing duct or the like is provided on the other end side of the recording material guide member, and the carriage movement space is inevitably generated outside the flushing duct or the like. It can be used as a moving space in the removal direction.

  Thus, according to the recording apparatus according to the first aspect of the present invention, the recording material guide member can be removed without removing the carriage from the recording apparatus. The effect that only can be removed easily is obtained.

  According to a second aspect of the present invention, in the first aspect described above, the recording material guide member is arranged in an ink discarding groove for borderless recording formed on the recording material support surface and the ink discarding groove. It is a recording apparatus characterized by having an installed ink absorber.

  According to the recording apparatus of the second aspect of the present invention, since only the recording material guide member can be easily removed without removing the carriage from the recording apparatus, the recording material guide member is disposed in the ink discarding groove. An effect is obtained that a repair maintenance operation for replacing the installed ink absorber can be easily performed.

  According to a third aspect of the present invention, in the first aspect or the second aspect described above, the recording material guide member has a side surface on one end side in the main scanning direction on an abutting surface provided in the recording apparatus. In the abutted state, positioning in the main scanning direction with respect to the mounting position is performed, and a convex portion formed on a side surface on one end side in the main scanning direction is fitted into a positioning hole formed in the abutting surface. Thus, the recording apparatus is positioned in a direction orthogonal to the main scanning direction with respect to the mounting position.

  As described above, the recording material guide member is positioned in the main scanning direction and in the direction orthogonal to the main scanning direction by abutting the side surface on one end side in the main scanning direction against the abutting surface of the recording apparatus. The Therefore, when the removed recording material guide member is attached to the predetermined attachment position, the carriage is moved to the movement limit position on one end side in the main scanning direction, and the other end in the main scanning direction is moved from the predetermined attachment position. After the recording material guide member is arranged at the position shifted to the side (the removal position of the recording material guide member), the recording material guide member is moved to the abutting surface (in the mounting direction of the recording material guide member). By abutting against the abutting surface, the recording material guide member can be accurately positioned at a predetermined mounting position.

  According to a fourth aspect of the present invention, in the third aspect described above, a conveyance driving roller that conveys a recording material in the sub-scanning direction is rotatably supported by a metal frame that constitutes the casing of the recording apparatus. The abutting surface is formed by a side frame having a surface perpendicular to the main scanning direction constituting the metal frame.

  As described above, since the abutting surface for positioning the recording material guide member at the predetermined mounting position is formed on the side frame of the metal frame constituting the casing of the recording device, the recording material guide member with respect to the recording device is provided. The mounting position can be defined with high accuracy and stability. Further, a conveyance driving roller that conveys a recording material in the sub-scanning direction is rotatably supported on a metal frame that constitutes a casing of the recording apparatus. That is, since the conveyance driving roller and the recording material guide member are supported by the same metal frame, the recording material conveyed in the sub-scanning direction by the conveyance driving roller and the conveyance driving roller is slidably supported from the back side of the recording surface. The recording material guide member can be mounted at a predetermined mounting position in a state where the positional relationship with the platen (recording material support surface) is regulated with high accuracy and stability.

According to a fifth aspect of the present invention, in the fourth aspect described above, the recording material guide member has an arm portion slidably engaged with an outer peripheral surface of the transport driving roller formed on the other end side in the main scanning direction. The recording apparatus is characterized by that.
In this way, the recording material guide member mounted at a predetermined mounting position is positioned on one end side in the main scanning direction because the other end side in the main scanning direction is supported by the transport driving roller via the arm portion. Thus, the attachment stability on the other end side of the recording material guide member attached in this manner can be increased. Further, at the time of attaching and removing the recording material guide member, the arm portion can be slid in the attaching direction and the detaching direction while being in sliding contact with the outer peripheral surface of the transport driving roller, so that the recording material guide member is removed, And positioning at the time of attachment can be performed easily and reliably.

According to a sixth aspect of the present invention, in the fourth aspect or the fifth aspect described above, the recording material guide member conveys the recording material after execution of recording in the sub-scanning direction and discharges it. Has a bearing portion that rotatably supports a discharge drive roller shaft that is concentrically and integrally disposed.
As described above, the discharge drive roller shaft is rotatably supported by the recording material guide member. In other words, the recording material guide member is integrally provided with the discharge drive roller shaft disposed downstream of the platen in the sub-scanning direction. Therefore, when the recording material guide member is removed, the discharge drive roller shaft is simultaneously provided. Can be removed. Therefore, the workability and work efficiency of the work of attaching and removing the recording material guide member can be further improved.

According to a seventh aspect of the present invention, in the sixth aspect described above, the recording material guide member is engaged with the discharge drive roller shaft so as to be able to transmit the rotation in a state where the recording material guide member is attached to the attachment position. An intermediate gear that transmits a rotational driving force to the discharge drive roller shaft; one end side in the main scanning direction of the intermediate gear shaft that pivotally supports the intermediate gear is fixed to the recording apparatus; and the recording material guide member is In the recording apparatus, wherein the other end side in the main scanning direction of the intermediate gear shaft is supported by an intermediate gear bearing portion provided in the recording material guide member while being positioned at the mounting position. is there.
In a state where the recording material guide member is positioned and mounted at a predetermined mounting position, the intermediate gear that transmits the rotational driving force such as a motor to the discharge driving roller shaft is not limited to the intermediate gear shaft that supports the intermediate gear. The end side is supported by the recording material guide member. Accordingly, the positional relationship between the intermediate gear and the recording material guide member at a predetermined mounting position of the recording material guide member can be defined with high accuracy. Therefore, the rotation transmission engagement between the intermediate gear pivotally supported by the recording apparatus and the discharge driving roller shaft rotatably supported by the recording material guide member can be ensured and stable.

According to an eighth aspect of the present invention, in the sixth aspect or the seventh aspect described above, the discharge drive is performed in a state where the recording material guide member is positioned at the predetermined position on the side frame. The first insertion hole through which the roller shaft is inserted and the recording material guide member are positioned at the predetermined position, and are formed on a side surface on one end side in the main scanning direction of the recording material guide member. A second insertion hole through which the locking piece is inserted, and the recording material guide member is positioned at the predetermined position and protrudes from the first insertion hole. By connecting the end portion of the discharge drive roller shaft and the locking piece protruding from the second insertion hole with a metal elastic locking member, the recording material guide member contacts the side frame. When urged and locked in the direction of contact The discharge driving roller shaft is ground connected to the side frame also be a recording apparatus characterized by.
As described above, the recording material guide member can be urged toward the abutting surface by one elastic locking member and locked in a state where the recording material guide member is reliably positioned and fixed at a predetermined mounting position. At the same time, the discharge drive roller shaft (generally formed of a metal shaft) can be grounded to a metal frame forming the casing of the recording apparatus.

According to a ninth aspect of the present invention, in the eighth aspect described above, the recording material guide member has a reinforcing frame made of a metal member elongated in the main scanning direction. A third insertion hole through which the tip of the reinforcing frame protruding to one end of the recording material guide member is inserted is formed, and the recording material guide member is positioned at the predetermined position, An end of the discharge drive roller shaft protruding from the first insertion hole, the locking piece protruding from the second insertion hole, and the reinforcing frame protruding from the third insertion hole. By connecting the leading end with the elastic locking member, the recording material guide member is urged and locked in a direction to contact the side frame, and the discharge drive roller shaft and the reinforcing frame are fixed to the side frame. Is ground connection to the over arm, it is a recording apparatus wherein.
A reduction in flatness due to bending of a platen (recording material guide surface) formed on the recording material guide member by the reinforcing frame can be reduced, and the reinforcing frame is also driven to discharge by the elastic locking member. Together with the roller shaft, it can be grounded to a metal frame constituting the casing of the recording apparatus.

According to a tenth aspect of the present invention, in the eighth aspect or the ninth aspect described above, the elastic locking member is a torsion coil spring having a shape adapted to the arrangement of the connecting portions. It is a recording device.
With one torsion coil spring, the recording material guide member can be urged against the abutting surface and locked in a reliably positioned state and fixed at a predetermined mounting position, and at the same time, the discharge drive roller shaft is recorded. Since the earth connection can be made to the metal frame constituting the housing of the apparatus, it is possible to reduce the number of parts of the recording apparatus and the parts cost.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
First, a schematic configuration of an ink jet recording apparatus as a “recording apparatus” according to the present invention will be described.

FIG. 1 is an external perspective view of an ink jet recording apparatus according to the present invention. FIG. 2 is a schematic perspective view of the ink jet recording apparatus according to the present invention with the main body cover removed. FIG. 3 is a perspective view of an essential part of the internal structure of the ink jet recording apparatus according to the present invention. FIG. 4 is a sectional side view of the main part of the internal structure of the ink jet recording apparatus according to the present invention. FIG. 5 is a perspective view of the main part of the internal structure of the ink jet recording apparatus, and shows a state in which the post-paper guiding member is removed.
The ink jet recording apparatus 100 is covered with a main body cover 1 as shown in FIG. 1, and an upper surface cover 2 that can be opened and closed upward is disposed on the upper surface of the main body cover 1. By opening the top cover 2, the user can access the inside of the ink jet recording apparatus 100, and the ink cartridge can be replaced. A switch 5 such as a power switch is disposed on the front surface of the main body cover 1, and a paper discharge stacker 3 and a disc tray cover 4 are disposed so as to be openable and closable forward. The paper discharge stacker 3 is used in a state of being opened forward at the time of recording execution, and is placed on the paper output stacker 3 in a state where the “recorded material” and the recording paper P as the “conveyed body” after the recording are open. It is discharged and stacked. When the disc tray cover 4 is opened forward, the disc tray cover 4 can be accessed from the front to the disc tray insertion slot for the user to manually insert the disc tray. The disc tray is used when performing recording on the label surface of the optical recording disc, and performs recording by manually inserting the disc tray with the optical recording disc mounted therein to a predetermined insertion position of the disc tray insertion slot. Thus, recording on the label surface of the optical recording disk can be executed.

  As shown in the figure, an automatic paper feeder 20 is disposed at the rear of the ink jet recording apparatus 100, and a paper feed tray cover 6 that can be opened and closed upward is disposed above the automatic paper feeder 20. ing. The paper feed tray cover 6 is used in an open state when recording is performed, and recording before recording is performed on the paper feed tray 22 that forms a support surface of the recording paper P integrally with the opened paper feed tray cover 6. The paper P is stacked. The recording sheets P stacked on the sheet feeding tray 22 are pressed against the outer peripheral surface of the sheet feeding roller 21 by a hopper 23 that swings toward the sheet feeding roller 21 at a predetermined timing during sheet feeding. The recording paper P pressed against the outer peripheral surface of the paper feed roller 21 is rotated with the outer peripheral surface of the transport driving roller 41 by the drive rotation of the paper feed roller 21 that is rotatably arranged with the paper feed roller shaft 211 as a rotation axis. The sheets are automatically fed one by one toward the contact surface with the outer peripheral surface of the transport driven roller 42.

  The main body 11, the left side frame 12, the right side frame 13, the right side outer frame 13 a, and the rear frame 19 form a main skeleton of the casing of the ink jet recording apparatus 100. The left side frame 12 (via the member 191), the right side frame 13, and the right side outer frame 13 a are connected by a rear frame 19 on the front side of the ink jet recording apparatus 100. Both end support portions (left end support portion 411 and right end support portion 412) of the transport driving roller 41 are respectively attached to the left side frame 12 and the right side frame 13 so as to be rotatable in the transport direction (sub scanning direction Y) of the recording paper P. It is rotatably supported. The left end support portion 411 of the transport driving roller 41 is rotatably supported by the left side frame 12 via the rotating bush 17, and the right end support portion 412 of the transport driving roller 41 is supported by the right side frame 13 via the rotating bush 18. It is rotatably supported. Further, the center support portion 413 formed near the center of the transport drive roller 41 is rotatably supported by the intermediate support member 15. The intermediate support member 15 can move the support position of the center support portion 413 up and down by the rotation position of the adjustment member 16 rotatably disposed on the subframe 14. A high frictional resistance film is formed on the outer peripheral surface of the conveyance driving roller 41 except for the central support portion 413 that is rotatably supported by the intermediate support member 15 on the portion where the recording paper P is pressed and adhered. . That is, as shown in the drawing, a high frictional resistance film 41a is formed on the left side and a high frictional resistance film 41b is formed on the right side with the center support portion 413 interposed therebetween.

  Two transport driven rollers 42 are supported on each transport driven roller holder 43 so as to be driven to rotate in the transport direction of the recording paper P. A plurality of transport driven roller holders 43 are arranged in parallel with the transport drive roller 41. The main frame 11 is swingably supported. Each conveyance driven roller holder 43 is pressed and biased to the conveyance driving roller 41 by a spring 431, whereby each conveyance driven roller 42 is pressed against the outer peripheral surface of the conveyance driving roller 41 with a substantially constant pressing force. Yes. In addition, auxiliary roller holders 43S are disposed downstream of each conveyance driven roller holder 43 in the sub-scanning direction Y, and the auxiliary roller 42S is driven and rotated in the conveyance direction of the recording paper P in the auxiliary roller holder 43S. Supported as possible. A high frictional resistance film is uniformly formed on the outer peripheral surface of the transport driving roller 41 except for the vicinity of the left end support portion 411, the right end support portion 412, and the center support portion 413. The recording paper P fed from the automatic paper feeder 20 is guided toward the outer peripheral surface of the transport driving roller 41 by the paper guide front member 44, and the outer peripheral surface of the transport driving roller 41 and the transport driven roller 42 come into contact with each other. The conveyance amount corresponding to the rotation amount of the conveyance drive roller 41 is held by the surface and pressed against and closely contacts the high frictional resistance coating surface of the conveyance drive roller 41 and the conveyance drive roller 41 rotates in the sub-scanning direction Y. Is conveyed in the sub-scanning direction Y.

  The conveyance drive roller 41 is integrally attached so that the conveyance gear 54 can transmit rotation, and the drive rotation of the drive pulley 52 of the conveyance motor 51 is transmitted to the conveyance gear 54 via the endless belt 53 and rotates. The recording paper P transported in the sub-scanning direction Y by the rotation of the transport driving roller 41 is transported while its surface posture is regulated while the back surface is in sliding contact with the platen 46 formed integrally with the post-paper guiding member 45. A known rotary encoder is provided on the left end support portion 411 side of the transport driving roller 41 as “rotation amount detecting means” for detecting the rotation amount of the transport driving roller 41. The rotary encoder includes a rotary scale 50 that rotates in conjunction with the rotation of the conveyance drive roller 41, and a rotary scale sensor 501 that detects slits formed at equal intervals along the outer periphery of the rotary scale 311. .

  The ink jet recording apparatus 100 includes a carriage 62 for causing a recording head 63 that performs recording by ejecting ink onto the recording paper P to scan the recording paper P in the main scanning direction X. The carriage 62 is pivotally supported by a carriage guide shaft 61 so as to be reciprocable in the main scanning direction X, and a rotational driving force of a carriage motor (not shown) is transmitted by a belt transmission mechanism (not shown). Reciprocates to X. The carriage guide shaft 61 is disposed with both ends supported by the left side frame 12 and the right side outer frame 13a. An ink cartridge (not shown) filled with ink of each color is detachably mounted on the carriage 62, and ink of each color is supplied from the ink cartridge to the recording head 63. The head surface of the recording head 63 reciprocates in the main scanning direction X at a position facing the platen 46, and ink is ejected from the nozzles arranged on the head surface onto the recording paper P conveyed on the platen 46. Recording is performed. The distance between the head surface of the recording head 63 and the recording surface of the recording paper P is defined by the platen 46. The ink jet recording apparatus 100 is provided with a known linear encoder for detecting the movement position of the carriage 62. The linear encoder includes a linear scale 64 disposed in parallel to the carriage guide shaft 61, a linear scale sensor (not shown) that is mounted on the carriage 62 and detects slits formed in the linear scale 64 at equal intervals. have.

  On the other hand, on the downstream side of the platen 46 in the sub-scanning direction Y, as a means for discharging the recording paper P after execution of recording, a first paper guide member 45 is rotatably supported by the post-paper guiding member 45 so as to be rotatable in the sub-scanning direction Y. One paper discharge drive roller shaft 47 and a second paper discharge drive roller shaft 48 are provided. As shown in the drawing, a plurality of first paper discharge drive rollers 471 are provided at substantially equal intervals on the first paper discharge drive roller shaft 47, and a plurality of first paper discharge drive roller shafts 48 are similarly provided with a plurality of paper discharge drive roller shafts 48. Second paper discharge drive rollers 481 are provided at substantially equal intervals. The second paper discharge drive roller 481 transmits the rotational driving force of the transport motor 51 to the second paper discharge drive roller shaft 48 via the transport gear 54, the intermediate gear 55, and the paper discharge gear 56, and the discharge direction ( Rotate in the sub-scanning direction Y). The first paper discharge drive roller 471 is connected to the first paper discharge drive roller shaft 47 via a gear 57 that is rotatably attached to the second paper discharge drive roller shaft 48 and an intermediate gear (not shown). The rotational driving force of the conveying motor 51 is transmitted to the gear 58 that is attached so as to be able to transmit the rotation, and rotates in the discharge direction (sub-scanning direction Y).

  A paper discharge frame 49 (FIG. 4) that is long in the main scanning direction X is provided above the first paper discharge drive roller shaft 47 and the second paper discharge drive roller shaft 48. A plurality of first paper discharge driven rollers 472 are supported on the paper discharge frame 49 at positions corresponding to the first paper discharge drive rollers 471 so as to be driven to rotate, and correspond to the second paper discharge drive rollers 481. A plurality of second paper discharge driven rollers 482 are supported so as to be driven to rotate. The first paper discharge driven roller 472 and the second paper discharge driven roller 482 have a plurality of teeth around them and are sharply sharpened so that the tips of the teeth make point contact with the recording surface of the recording paper P. The first discharge roller 471 and the second discharge roller 481 are biased with a weak biasing force. The recording paper P after recording is held between the first paper discharge driving roller 471 and the first paper discharge driven roller 472, and is rotated by the rotation of the first paper discharge driving roller 471 in the discharge direction. The sheet is conveyed and is further sandwiched between the second discharge driving roller 481 and the second discharge driven roller 482 and opened by the rotation of the second discharge driving roller 481 in the discharge direction. Are discharged to the paper discharge stacker 3.

  In the ink jet recording apparatus 100 having such a configuration, first, the blank recording paper P before recording is automatically fed by the automatic paper feeder 20. Subsequently, the automatically fed blank recording paper P before recording is conveyed in the sub-scanning direction Y by a predetermined transport amount while being in sliding contact with the platen 46 facing the head surface of the recording head 63 by the rotation of the transport driving roller 41. The operation of transporting and the operation of ejecting ink from the recording head 63 that reciprocates in the main scanning direction X on the platen 46 are alternately and repeatedly executed to perform recording on the recording surface. Then, the recording paper P after recording is discharged to the paper discharge stacker 3 by the rotation of the first paper discharge drive roller 471 and the second paper discharge drive roller 472 in the discharge direction. A series of these recording execution operations are performed by a recording control device (not shown), an automatic paper feeding motor (not shown) as a driving force source of the automatic paper feeding device 20, a conveying motor 51, and a carriage driving motor ( (Not shown) is controlled and executed.

  Subsequently, the attachment / detachment structure of the post-paper guidance member 45 as the “recording material guide member” will be described.

FIG. 6 is a perspective view of the main part of the ink jet recording apparatus 100, with both ends supported and attached to the left side inner frame 12 a and the right side frame 13 arranged in parallel to the inside of the left side frame 12. The state after removing the paper guide post member 45 is shown.
A platen 46 is formed integrally with the post-paper guiding member 45. The platen 46 is formed with an ink discarding groove 46D for discarding ink outside the recording paper P when recording is performed on all four sides of the recording paper P. The ink discarding groove 46D includes an ink discarding groove 46D. An ink absorber SP having a shape along the shape of the groove is disposed. A flushing duct 45H is disposed outside the platen 46 for discarding ink during a predetermined flushing operation. The post-paper guidance member 45 has one reinforcing frame 45F that extends over the entire width of the post-paper guidance member 45 in the main scanning direction X. By disposing the reinforcing frame 45F made of a long metal member, the rigidity of the post-paper guiding member 45 is increased, and a decrease in flatness due to the bending of the platen 46 can be reduced.

  The ink jet recording apparatus 100 includes a post-paper guiding member 45 attached to a predetermined attachment position, and a home position (position of the carriage 62 shown in FIG. 6) as a movement limit position on one end side in the main scanning direction X. The carriage 62 that has been moved to the position of the carriage 62 is disposed so that one end side of the post-paper guiding member 45 in the main scanning direction X and the other end side of the carriage 62 in the main scanning direction X partially intersect each other. Has been. The post-paper guidance member 45 is moved from the state where it is attached to a predetermined attachment position to the other end side in the main scanning direction X (in the direction indicated by C) with a movement width equal to or greater than the intersection width of the three-dimensional intersection. Thus, the removed state is obtained (the state shown in FIG. 6). In a state in which the post paper guiding member 45 is attached at a predetermined mounting position, the other end side of the post paper guiding member 45 in the main scanning direction X (the side on which the flushing duct 45H is disposed) and the left side frame 12 A space larger than the intersection width of the three-dimensional intersection between the post-paper guiding member 45 and the carriage 62 is formed between the two. Accordingly, when the post-paper guiding member 45 is removed, the post-paper guiding member 45 is moved to the other end side in the main scanning direction X (in the direction indicated by C) with a movement width equal to or greater than the intersection width of the three-dimensional intersection. be able to.

  The post-paper guiding member 45 has a bearing portion (described later) that rotatably supports a first paper discharge drive roller shaft 47 and a second paper discharge drive roller shaft 48 as “discharge drive roller shafts”. . That is, the post-paper guidance member 45 is integrally provided with the first paper discharge drive roller shaft 47 and the second paper discharge drive roller shaft 48 that are arranged downstream of the platen 46 in the sub-scanning direction Y. The first paper discharge drive roller shaft 47 and the second paper discharge drive roller shaft 48 can be removed at the same time as the paper guiding rear member 45. Therefore, the workability and work efficiency of the work of attaching and removing the post-paper guidance member 45 can be further improved.

  The post-paper guiding member 45 is positioned at a predetermined mounting position in a state where one end side is supported by the right side frame 13. The other end side of the paper guiding rear member 45 is supported by the left side inner frame 12a so that the bottom surface is slidable, and the arm portion 45U is slidably engaged with the outer peripheral surface of the conveyance driving roller 41, thereby conveying conveyance roller. 41 is slidably supported. Accordingly, it is possible to increase the attachment stability on the other end side of the post-paper guiding member 45 positioned and attached on one end side in the main scanning direction X. When the post-paper guiding member 45 is attached or removed, the removal direction (direction indicated by C) and the attachment direction (denoted by D) with the arm portion 45U in contact with the outer peripheral surface of the transport driving roller 41. Therefore, the post-paper guiding member 45 can be removed and positioned at the time of attachment with ease and reliability.

  Next, the positioning structure of the paper guiding rear member 45 on one end side (right side frame 13 side) in the main scanning direction X will be described.

FIG. 7 shows a state where the post-paper guidance member 45 is slid in the removal direction (the direction indicated by the symbol C) and removed, and the paper guidance post-member 45 in this state is on the right side frame 13 side. It is the perspective view which expanded and showed the positioning part in.
FIG. 8 is an enlarged perspective view showing the positioning portion of the post paper guiding member 45 on the right side frame 13 side from a different angle in a state where the paper guiding rear member 45 is removed by sliding in the removing direction.
FIG. 9 shows a state in which the post-paper guidance member 45 is slid in the attachment direction (direction indicated by reference sign D) and attached to a predetermined attachment position. It is the perspective view which expanded and showed the positioning part in the right side frame 13 side.
FIG. 10 is a perspective view showing the positioning portion on the right side frame 13 side of the paper guiding rear member 45 in an enlarged state from a different angle in a state where the paper guiding rear member 45 is slid in the attachment direction and attached at a predetermined attachment position.
FIG. 11 is a perspective view showing the positioning portion on the right side frame 13 side of the post-paper guiding member 45 further enlarged from a different angle in a state where it is slid in the attachment direction and attached at a predetermined attachment position.

  The post-paper guiding member 45 abuts the side surface of one end side (right side frame 13 side) in the main scanning direction X against the inner side surface of the right side frame 13 as a “butting surface” provided in the ink jet recording apparatus 100. In this state (FIGS. 9 to 11), positioning in the main scanning direction X (left-right direction) with respect to a predetermined mounting position is performed. Further, the post-paper guiding member 45 is formed with a cylindrical positioning convex portion 452 and a positioning convex portion 453 on the side surface on one end side in the main scanning direction X, and is formed at a corresponding position on the right side frame 13. The positioning projections 452 are fitted into the positioning holes 134 and the positioning projections 453 are fitted into the positioning holes 135, and positioning in the direction (vertical direction and front-rear direction) perpendicular to the main scanning direction X with respect to a predetermined mounting position. Is done.

  Further, the post-paper guiding member 45 has a rectangular convex portion 455 formed on a side surface on one end side in the main scanning direction X, and a convex portion on a support side 138 formed at a corresponding position of the right side frame 13. The lower side of 455 abuts and supports the upstream side (platen 46 side) of the recording paper P in the transport direction (sub-scanning direction Y). Further, the post-paper guidance member 45 is provided with a first paper discharge drive roller shaft 47 and a second paper discharge drive roller shaft 48 on the downstream side in the conveyance direction (sub-scanning direction Y) of the recording paper P. Side) bottom portion 456 is supported from below by support portion 139 formed on right side frame 13.

  Thus, the post-paper guiding member 45 is positioned in the main scanning direction X and in the direction orthogonal to the main scanning direction X by abutting the side surface on one end side in the main scanning direction X against the right side frame 13. Is done. Therefore, when the removed paper guidance post-member 45 is attached to a predetermined attachment position, the paper guidance post-member 45 is disposed at the removal position (position shown in FIG. 6) with the carriage 62 moved to the home position. After that, by moving the post-paper guidance member 45 toward the right side frame 13 in the attachment direction D, the post-paper guidance member 45 can be accurately positioned at a predetermined attachment position.

  Further, since the “abutting surface” for positioning the paper guiding rear member 45 at a predetermined mounting position is formed on the right side frame 13 constituting the casing of the ink jet recording apparatus 100, the paper against the ink jet recording apparatus 100 is formed. The attachment position of the post-guide member 45 can be defined with high accuracy and stability. Further, since one end of the transport driving roller 41 is rotatably supported on the right side frame 13, the recording paper P transported in the sub-scanning direction Y by the transport driving roller 41 is slidably supported from the back side of the recording surface. The post-paper guiding member 45 can be attached to a predetermined attachment position in a state where the positional relationship between the platen 46 as the “recording material support surface” and the transport driving roller 41 is defined with high accuracy and stability.

In the state where the paper guiding rear member 45 is abutted against the right side frame 13 and positioned at a predetermined position, the discharge driving roller shaft (the first discharge driving roller shaft 47 and the second discharge shaft 45) Circular insertion holes 131 and 132 are formed as “first insertion holes” through which the paper discharge drive roller shaft 48) is inserted. In a state where the paper guiding rear member 45 is abutted against the right side frame 13 and positioned at a predetermined position, the first paper discharge driving roller shaft 47 is inserted into the insertion hole 131, and the insertion hole 132 is inserted into the insertion hole 132. The second paper discharge drive roller shaft 48 is inserted.
The post-paper guidance member 45 is formed with a locking piece 451 on the side surface on one end side in the main scanning direction X, and the post-paper guidance member 45 is abutted against the right side frame 13 against the right side frame 13. Thus, an insertion hole 133 is formed as a “second insertion hole” through which the locking piece 451 of the post-paper guidance member 45 is inserted.
Further, the paper guide rear member 45 protrudes from the right side frame 13 toward one end in the main scanning direction of the paper guide rear member 45 in a state where the paper guide rear member 45 is abutted against the right side frame 13 and is positioned at a predetermined position. An insertion hole 137 is formed as a “third insertion hole” through which the distal end portion FT of the reinforcing frame 45F is inserted.

  The first paper discharge drive roller shaft in a state of protruding to the outside of the right side frame 13 through each insertion hole in a state where the post paper guiding member 45 is abutted against the right side frame 13 and positioned at a predetermined position. The peripheral groove 474 formed in the end portion 473 of the 47, the peripheral groove 484 formed in the end portion 483 of the second paper discharge drive roller shaft 48, the locking piece 451, and the distal end portion FT of the reinforcing frame 45F, They are connected by a torsion coil spring 13b as a “metal elastic locking member”. As a result, the post-paper guiding member 45 is urged and locked in the direction in which it abuts on the right side frame 13 by the spring force of the torsion coil spring 13b. Further, the first paper discharge drive roller shaft 47, the second paper discharge drive roller shaft 48 and the reinforcing frame 45F made of a metal member are connected to the right side frame 13 via the torsion coil spring 13b. Further, the post-paper guiding member 45 has a locking claw 454 formed on the side surface on one end side in the main scanning direction X, and is locked to a locking side 136 formed at a corresponding position of the right side frame 13. The claw portion 454 is snap-engaged.

  Thus, the single torsion coil spring 13b can urge the post-paper-guiding member 45 to the right side frame 13 so as to be securely positioned and fixed to a predetermined mounting position. At the same time, the first discharge driving roller shaft 47, the second discharge driving roller shaft 48, and the reinforcing frame 45F made of a metal member can be grounded to the right side frame 13. When the post-paper guidance member 45 is removed during repair maintenance or the like, the torsion coil spring 13b is removed, and the post-paper guidance member 45 is slid in the removal direction (direction indicated by C), thereby moving the carriage 62. It can be easily removed without removing it.

  Next, the bearing structure of the first paper discharge drive roller shaft 47 and the second paper discharge drive roller shaft 48 that are rotatably supported by the paper guiding rear member 45 will be described.

FIG. 12 is an overall perspective view of the post-paper guiding member 45 removed from the ink jet recording apparatus 100.
FIG. 13 is an overall perspective view of the post-paper guiding member 45, and shows a state where the first paper discharge driving roller shaft 47 and the second paper discharge driving roller shaft 48 are removed from the paper guiding post-member 45. It is.
FIG. 14 is an enlarged perspective view showing the bearing portions of the first paper discharge drive roller shaft 47 and the second paper discharge drive roller shaft 48 on the other end side (left side frame 12 side) in the main scanning direction X. It is.
FIG. 15 is an enlarged view of the bearing portion on the other end side (left side frame 12 side) in the main scanning direction X with the first discharge driving roller shaft 47 and the second discharge driving roller shaft 48 attached. FIG.

One end side (end portion 473 side) of the first paper discharge drive roller shaft 47 is inserted into the bearing hole 457, and the other end side thereof is supported by the bearing portions 464 to 466 so as to be rotatably supported by the paper guiding rear member 45. (FIG. 12). The bearing portion 464 slidably supports the upper outer peripheral surface of the first paper discharge driving roller shaft 47 along the outer peripheral surface, and the bearing portion 465 approximately extends below the outer peripheral surface of the first paper discharge driving roller shaft 47. The bearing portion 466 is slidably supported along the outer peripheral surface of the first paper discharge drive roller shaft 47 along the outer peripheral surface (FIGS. 14 and 15). .
One end side (end portion 483 side) of the second paper discharge drive roller shaft 48 is inserted into the bearing hole 458, the other end side is supported by the bearing portions 461 to 463, and the other end side is supported by the bearing member 485. 12 and is rotatably supported by the paper guiding post-member 45 (FIG. 12). The bearing portion 461 slidably supports the upper outer peripheral surface of the second paper discharge driving roller shaft 48 along the outer peripheral surface, and the bearing portion 462 has the lower outer peripheral surface of the second paper discharge driving roller shaft 48 as an outer periphery. The bearing portion 463 is slidably supported along the outer peripheral surface of the second discharge driving roller shaft 48 along the outer peripheral surface over about a half circumference (FIGS. 14 and 15). .
A gear 57 is integrally attached to the first paper discharge drive roller shaft 47 by a pin 571 so as to be able to transmit rotation. A gear 58 is integrally attached to the second paper discharge drive roller shaft 48 by a pin 581 so as to be able to transmit rotation (FIG. 15).

  When the first paper discharge drive roller shaft 47 is slid in the direction indicated by the symbol F, one end side (end portion 473 side) thereof is disengaged from the bearing hole 457 (FIG. 13). Similarly, when the second paper discharge drive roller shaft 48 is slid in the same direction indicated by the symbol F, one end side (end portion 483 side) thereof is disengaged from the bearing hole 458 (FIG. 13). As a result, the first paper discharge drive roller shaft 47 can be removed by removing the other end side from the bearing portions 464 to 466. Similarly, the second paper discharge drive roller shaft 48 has the other end side removed. It can be removed from the bearing portions 461 to 463 and removed.

  Next, the attachment structure of the paper guiding rear member 45 on the other end side (left side frame 12 side) in the main scanning direction X will be described.

FIG. 16 is an enlarged plan view showing the other end side (left side frame 12 side) of the post-paper guidance member 45 in the main scanning direction X, and the post-paper guidance member 45 is shown in the removal direction (denoted by C). FIG. 17 is a perspective view showing a state where it can be slid in a direction) and removed.
FIG. 18 is an enlarged plan view showing the other end side (left side frame 12 side) of the post-paper guidance member 45 in the main scanning direction X, and the post-paper guidance member 45 is shown in the mounting direction (denoted by D). FIG. 19 is a perspective view showing a state in which it is slid in a direction) and attached to a predetermined attachment position.
The second paper discharge drive roller shaft 48 is integrally provided with a paper discharge gear 56, and the rotational driving force of the transport motor 51 (FIG. 3) is transmitted to the gear 58 so as to be discharged in the discharge direction (sub-scanning direction Y). ). In a state in which the paper guiding rear member 45 is attached to a predetermined attachment position, the gear 57 that is attached to the second discharge driving roller shaft 48 so as to be able to transmit rotation is engaged with the intermediate gear 59, and the intermediate gear 59 is engaged. Is engaged with a gear 58 that is attached to the first paper discharge drive roller shaft 47 so as to be able to transmit rotation. As a result, the first paper ejection drive roller shaft 47 is rotated in the paper ejection direction (sub-scanning direction Y) when the rotational driving force of the conveying motor 51 is transmitted (FIG. 16).
For the gear 57, gear 58 and intermediate gear 59, the illustration of teeth formed on the outer peripheral surface is omitted to make the drawing easier to see, and the same applies to the following drawings.

  The intermediate gear 59 is pivotally supported by the intermediate gear shaft 591, and one end side of the intermediate gear shaft 591 is fixed to the left side inner frame 12 a. In a state where the post-paper guiding member 45 is positioned at a predetermined mounting position (a state where it is slid in the mounting direction indicated by reference sign D), the other end side of the intermediate gear shaft 591 is provided on the post-paper guiding member 45. The bearings 467 to 469 are supported by the post-paper guiding member 45. The bearing portion 467 abuts and supports the upper side of the outer peripheral surface of the other end side of the intermediate gear shaft 591 along the outer peripheral surface, and the bearing portion 468 extends over the upper half of the outer peripheral surface of the other end side of the intermediate gear shaft 591 over about a half circumference. The bearing portion 469 abuts and supports the lower side of the other end side outer peripheral surface of the intermediate gear shaft 591 along the outer peripheral surface (FIG. 17). .

As described above, in the state where the post-paper guidance member 45 is attached to the predetermined attachment position, the other end side of the intermediate gear shaft 591 is placed on the post-paper guidance member by the bearing portions 467 to 469 provided on the post-paper guidance member 45. Therefore, the positional relationship between the intermediate gear 59 and the post-paper guidance member 45 at a predetermined mounting position of the post-paper guidance member 45 can be defined with high accuracy. Therefore, the intermediate gear 59 that is pivotally supported by the left side inner frame 12a of the ink jet recording apparatus 100, and the gear 57 and the second gear 57 of the first discharge driving roller shaft 47 that are rotatably supported by the paper guiding rear member 45. The rotation transmission engagement with the gear 58 of the paper discharge drive roller shaft 48 can be made reliable and stable.
On the other hand, in the state in which the paper guiding rear member 45 is slid from the predetermined mounting position in the removing direction (the direction indicated by the symbol C), the other end side of the intermediate gear shaft 591 is provided on the paper guiding rear member 45. It will be in the free state which is not spaced apart from the bearing parts 467-469 which are. As a result, the engagement between the other end side of the post paper guiding member 45 and the left side inner frame 12a is released, and the post paper guiding member 45 can be removed (FIGS. 18 and 19).

  Subsequently, an engagement structure between the “intermediate support means” that slidably supports the central support portion 413 of the transport driving roller 41 outside the transport path of the recording paper P and the paper guiding rear member 45 will be described.

FIG. 20 is a perspective view of an essential part in which the vicinity of the center support part 413 of the transport driving roller 41 is enlarged.
The ink jet recording apparatus 100 slidably supports the central support portion 413 of the transport driving roller 41 outside the transport path of the recording paper P so as to oppose the pressing force of the recording paper P by the transport driven roller holder 43 to the transport driving roller 41. It is equipped with “medium support means”. The “medium support means” includes a middle support member 15 that slidably supports the central support portion 413 of the transport driving roller 41 outside the transport path of the recording paper P, and a sliding contact support position of the central support portion 413 by the middle support member 15. And an adjustment member 16 as “support position adjustment means” disposed so as to be capable of displacement adjustment (vertical movement adjustment) in a direction substantially orthogonal to the rotation axis of the transport drive roller 41.

  The transport driving roller 41 is rotatably supported at the central support portion 413 in a state where the sliding contact support surface 151 of the intermediate support member 15 is in sliding contact with the outer peripheral surface of the central support portion 413 as illustrated. The intermediate support member 15 is slidably contacted with the center support portion 413 so as to restrict the fluctuation of the outer peripheral surface in the direction orthogonal to the rotation axis when the conveyance drive roller 41 rotates due to the curved deformation with respect to the axis of the conveyance drive roller 41. The support surface 151 is disposed at a position that becomes a fluctuation regulating surface of the outer peripheral surface of the transport driving roller 41. The slidable contact support surface 151 has a shape having an inner peripheral surface that is in slidable contact with the outer peripheral surface of the center support portion 413 as shown in the figure, and the pressing direction (vertical direction) of the recording paper P by the transport driven roller holder 43. In addition, it has a shape capable of restricting fluctuations in the outer peripheral surface of the conveyance drive roller 41 in a direction (front-rear direction) substantially orthogonal to the pressing direction. As a result, it is possible to effectively prevent the “jumping phenomenon” while the conveyance drive roller 41 is rotating.

  The intermediate support member 15 is disposed on the subframe 14 such that the bottom 154 side is in contact with and supported by the outer peripheral surface of the eccentric cam 166 of the adjustment member 16 so as to oppose the pressing force of the recording paper P by the conveyance driven roller holder 43. . The adjustment member 16 is supported by the subframe 14 so as to be rotatable in the direction indicated by the symbol A, and the intermediate support member 15 is moved up and down in the direction indicated by the symbol B in accordance with the rotation position to drive the adjustment. The support position of the central support portion 413 of the roller 41 can be adjusted. In the adjustment member 16, the tooth portion 165 formed outside the hole 164 having a shape along the rotation locus has elasticity generated by the hole 164 and is click-engaged with the rotation positioning convex portion 144. The rotation position of the adjustment member 16 is positioned at the tooth interval of the tooth portion 165, and the screw 143 screwed into the subframe 14 is tightened while being inserted through the hole 163 having a shape along the rotation locus. As a result, it can be fixed at the optimal rotation position after adjustment.

FIG. 21 is a side view showing an enlarged cross section in the vicinity of the intermediate support member 15.
The paper guide front member 44 is connected to the middle support member 15 in a state in which the convex portion 443 formed in the vicinity of the center is fitted between the two convex portions 152 formed at corresponding positions of the middle support member 15. Has been supported. On the other hand, the post-paper guiding member 45 is connected to and supported by the middle support member 15 in a state in which the convex portions 45a formed in the vicinity of the center are fitted in the concave portions 153 formed at corresponding positions of the middle support member 15. Is done. The paper guiding front member 44 is coupled to the displacement of the intermediate driving member 15 in the vertical direction (direction indicated by B) by rotating the adjusting member 16 in the direction indicated by reference numeral A. The vicinity of the center of the feeding guide surface 444 is bent and deformed in the vertical direction (direction indicated by B) so that the distance between the outer peripheral surface and the feeding guide surface 444 is substantially equal. Similarly, the post-paper guiding member 45 also moves in the vicinity of the center of the platen 46 so that the distance between the outer peripheral surface of the transport driving roller 41 and the platen 46 becomes substantially equal in conjunction with the displacement of the intermediate support member 15 by the adjusting member 16. It bends and deforms in the vertical direction (the direction indicated by the symbol B).

Even if the feed guide surface 444 of the paper guide front member 44 is warped or curved, the gap between the outer peripheral surface of the transport driving roller 41 and the feed guide surface 444 is maintained substantially evenly. The warp or curved deformation of the surface 444 can be corrected. Thereby, the abutting position and the abutting angle of the leading edge of the recording paper P with respect to the outer peripheral surface of the transport driving roller 41 can be made substantially uniform over the entire width of the recording paper P in the main scanning direction X. Therefore, it is possible to prevent the skew of the recording paper P, the bending of the recording paper P, the lifting, the leading edge bending, the variation in the cueing amount, and the like due to the warp or the curved deformation of the feeding guide surface 444.
Similarly, even if the platen 46 of the post-paper-guiding member 45 is warped or curved, the distance between the outer peripheral surface of the transport driving roller 41 and the platen 46 is maintained approximately evenly, and the warp or curve of the platen 46 is maintained. Deformation can be corrected. As a result, the orientation of the recording paper P conveyed in sliding contact with the platen 46 with respect to the outer peripheral surface of the transport driving roller 41, the sliding contact angle of the recording paper P, and the like are substantially uniform over the entire width of the recording paper P. Therefore, it is possible to prevent the recording paper P from being skewed, bent or lifted due to the warping or bending deformation of the platen 46, and the like.

  Next, an engagement state between the post-paper guidance member 45 and the intermediate support member 15 when the post-paper guidance member 45 is removed will be described.

22 to 25 are perspective views showing an enlarged cross-section of the engaging portion between the intermediate support member 15 and the paper guiding rear member 45, in the direction in which the paper guiding rear member 45 is removed (the direction indicated by C). ) Shows the state of engagement between the intermediate support member 15 and the post-paper guiding member 45 in order.
In a state in which the post paper guiding member 45 is attached to a predetermined mounting position, the abutting portion 159 of the intermediate supporting member 15 is in contact with the abutting surface 45b of the post paper guiding member 45, and The convex portion 45a of the paper guiding rear member 45 is fitted in the concave portion 153 (FIG. 21).
From this state, when the paper guiding rear member 45 starts to slide in the removal direction (direction indicated by reference symbol C), the convex portion 45a of the paper guiding rear member 45 extends from the concave portion 153 of the intermediate support member 15 in the removal direction (reference symbol C). It slides out in the direction shown (FIG. 22).
Further, when the post-paper guiding member 45 is slid in the removing direction (the direction indicated by C), the convex portion 45a of the post-paper guiding member 45 is completely removed from the concave portion 153 of the intermediate support member 15, and then the paper The side wall portion 156 of the intermediate support member 15 abuts on the tip of the guide portion 45d of the post-guide member 45. As a result, the post-paper guidance member 45 moves in the removal direction (the direction indicated by the symbol C) and is in a state of being abutted (FIG. 23).

  If the post-paper guidance member 45 is further slid in the removal direction (direction shown by C) from the state where the movement in the removal direction (direction shown by C) hits, the post-paper guidance member 45 The upper end portion 158 of the intermediate support member 15 is guided to the lower side of the guide portion 45d of the paper guiding rear member 45 by the guide slope 45c formed at the tip of the guide portion 45d. Further, the convex portion 45 a of the post-paper guiding member 45 is guided obliquely upward while being in sliding contact with the guide slope 157 of the intermediate support member 15. As a result, the post-paper guiding member 45 moves obliquely upward (in the direction indicated by the symbol E) (FIG. 24).

  The post-paper guiding member 45 is further slid in the removal direction (direction indicated by C) in a state where the upper end 158 of the intermediate support member 15 has entered the lower side of the guide portion 45d of the post-paper guiding member 45. It becomes possible. When the paper guiding rear member 45 is further slid in the removal direction (the direction indicated by the symbol C) from this state, the convex portion 45a of the paper guiding rear member 45 is completely removed from the concave portion 153 of the intermediate support member 15. Are separated. Accordingly, the post-paper guidance member 45 can be removed in a state where the engagement between the intermediate support member 15 and the post-paper guidance member 45 is released (FIG. 25).

  On the other hand, when attaching the post-paper guidance member 45 to a predetermined attachment position, if the post-paper guidance member 45 is slid from the state shown in FIG. By the guide slope 155 and the guide slope 157 formed on the entrance side of the recess 153 of the support member 15, the convex portion 45 a of the post paper guiding member 45 is guided to the recess 153 of the intermediate support member 15. Thus, when the post-paper guiding member 45 is attached, the convex portion 45a of the post-paper guiding member 45 can be reliably guided and fitted into the concave portion 153 of the intermediate support member 15 without difficulty.

  In this manner, the post-paper guiding member 45 can be removed without removing the carriage 62 from the ink jet recording apparatus 100, so that only the post paper guiding member 45 can be easily removed during repair maintenance of the ink jet recording apparatus 100. it can.

  The present invention is not limited to the above-described embodiments, and various modifications can be made within the scope of the invention described in the claims, and these are also included in the scope of the present invention. Needless to say.

1 is an external perspective view of an ink jet recording apparatus. It is the schematic perspective view which removed the main body cover of the ink jet recording device. It is a principal part perspective view of the internal structure of an inkjet recording device. It is principal part side sectional drawing of the internal structure of an inkjet type recording device. It is a principal part perspective view of the internal structure of an inkjet recording device. It is a principal part perspective view of an inkjet recording device. It is the perspective view which expanded and showed the positioning part of the member after paper guidance. It is the perspective view which expanded and showed the positioning part of the member after paper guidance. It is the perspective view which expanded and showed the positioning part of the member after paper guidance. It is the perspective view which expanded and showed the positioning part of the member after paper guidance. It is the perspective view which expanded and showed the positioning part of the member after paper guidance. It is a whole perspective view of a paper guidance post-member. It is a whole perspective view of a paper guidance post-member. It is a perspective view of the bearing part of the other end side of the main scanning direction of the post-paper guiding member. It is a perspective view of the bearing part of the other end side of the main scanning direction of the post-paper guiding member. It is the top view which expanded and showed the other end side of the main scanning direction of the member after paper guidance. It is the perspective view which expanded and showed the other end side of the main scanning direction of the member after paper guidance. It is the top view which expanded and showed the other end side of the main scanning direction of the member after paper guidance. It is the perspective view which expanded and showed the other end side of the main scanning direction of the member after paper guidance. It is the principal part perspective view which expanded the center support part vicinity of the conveyance drive roller. It is the side view which expanded and showed the cross section of the vicinity of a middle support member. It is the perspective view which expanded the engaging part cross section of a middle support member and a paper guidance back member. It is the perspective view which expanded the engaging part cross section of a middle support member and a paper guidance back member. It is the perspective view which expanded the engaging part cross section of a middle support member and a paper guidance back member. It is the perspective view which expanded the engaging part cross section of a middle support member and a paper guidance back member.

Explanation of symbols

1 Body cover, 2 Top cover, 3 Output stacker, 4 Disc tray cover, 5 Switches, 6 Paper feed tray cover, 12 Left side frame, 12a Left side inner frame, 13 Right side frame, 14 Sub frame, 15 Middle Support member, 16 adjustment member, 20 automatic paper feeder, 21 paper feed roller, 22 paper feed tray, 23 hopper, 41 transport drive roller, 42 transport driven roller, 43 transport driven roller holder, 44 paper guide front member, 45 paper Rear guide member, 46 platen, 47 first discharge drive roller shaft, 48 second discharge drive roller shaft, 51 transport motor, 59 intermediate gear, 61 carriage guide shaft, 62 carriage, 63 recording head, 100 inkjet Type recording device, 131, 132 first insertion hole, 133 second insertion hole, 1 37 third insertion hole, 13b torsion coil spring, 411 left end support, 412 right end support, 413 center support, 444 feed guide surface, 41a, 41b high friction resistance coating, 451 locking piece, 45F reinforcement frame, 45H flushing duct, 46D ink discard groove, 591 intermediate gear shaft, SP ink absorber

Claims (10)

A carriage that supports a recording head that ejects ink onto a recording material so as to be capable of reciprocating in the main scanning direction;
A recording apparatus comprising a recording material guide member having a recording material support surface for slidingly supporting the recording material conveyed in the sub-scanning direction from the back side of the recording surface so that the recording surface faces the head surface of the recording head Because
The recording material guide member attached to a predetermined attachment position and the carriage moved to a movement limit position on one end side in the main scanning direction are one end of the recording material guide member in the main scanning direction. A side and the other end side of the carriage in the main scanning direction are arranged so as to partially intersect each other.
The recording apparatus, wherein the recording material guide member is in a removable state by being moved from the mounting position to the other end side in the main scanning direction with a movement width equal to or greater than the intersection width of the three-dimensional intersection. 2. The recording material guide member according to claim 1, wherein the recording material guide member includes an ink discarding groove for borderless recording formed on the recording material support surface and an ink absorber disposed in the ink discarding groove. A recording apparatus characterized by that. 3. The recording material guide member according to claim 1, wherein the recording material guide member is arranged in a main scanning direction with respect to the mounting position in a state in which a side surface on one end side in the main scanning direction is abutted against an abutting surface provided in the recording apparatus. Positioning in the direction perpendicular to the main scanning direction with respect to the mounting position is achieved by fitting a convex portion formed on one side surface in the main scanning direction into a positioning hole formed in the abutting surface. A recording apparatus characterized by that. In Claim 3, the conveyance drive roller which conveys a to-be-recorded material to a subscanning direction is rotatably supported by the metal frame which constitutes the case of the above-mentioned recording device,
The abutting surface is formed by a side frame having a surface perpendicular to the main scanning direction constituting the metal frame. The recording apparatus according to claim 4, wherein the recording material guide member has an arm portion slidably engaged with an outer peripheral surface of the transport driving roller formed on the other end side in the main scanning direction. 6. The recording material guide member according to claim 4, wherein the recording material guide member rotates a discharge driving roller shaft in which discharge driving rollers for conveying and discharging the recording material after recording in the sub-scanning direction are disposed concentrically and integrally. A recording apparatus having a bearing portion that supports the recording medium. The intermediate for transmitting a rotational driving force to the discharge driving roller shaft according to claim 6, wherein the recording material guide member is rotatably engaged with the discharge driving roller shaft in a state where the recording material guide member is mounted at the mounting position. With gears,
One end side in the main scanning direction of the intermediate gear shaft that pivotally supports the intermediate gear is fixed to the recording apparatus,
The other end side of the intermediate gear shaft in the main scanning direction is supported by an intermediate gear bearing provided in the recording material guide member in a state where the recording material guide member is positioned at the mounting position. A recording device characterized by. 8. The first insertion hole into which the discharge drive roller shaft is inserted in the side frame in a state where the recording material guide member is positioned at the predetermined position, and the side frame. A second insertion hole into which a locking piece formed on a side surface on one end side in the main scanning direction of the recording material guide member is inserted in a state where the recording material guide member is positioned at the predetermined position; Formed,
In a state where the recording material guide member is positioned at the predetermined position, an end portion of the discharge driving roller shaft protruding from the first insertion hole and the protrusion protruding from the second insertion hole By connecting the locking piece with a metal elastic locking member, the recording material guide member is urged and locked in a direction in contact with the side frame, and the discharge drive roller shaft is fixed to the side frame. A recording device characterized in that the frame is grounded. 9. The recording material guide member according to claim 8, wherein the recording material guide member has a reinforcing frame made of a metal member elongated in the main scanning direction,
The side frame is formed with a third insertion hole through which the tip of the reinforcing frame protruding to one end side of the recording material guide member is inserted,
In a state where the recording material guide member is positioned at the predetermined position, an end portion of the discharge driving roller shaft protruding from the first insertion hole and the protrusion protruding from the second insertion hole By linking the locking piece and the tip of the reinforcing frame protruding from the third insertion hole with the elastic locking member, the recording material guide member is biased in a direction to contact the side frame. The recording apparatus, wherein the discharge driving roller shaft and the reinforcing frame are grounded to the side frame. The recording apparatus according to claim 8, wherein the elastic locking member is a torsion coil spring having a shape that matches the arrangement of the connecting portions.

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