JP2013049503A - Recording device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a recording device in which a sheet guide is separated from a side edge of a sheet during a recording operation for reducing back tension, and to solve the problem that, when a device user manually operates the sheet guide during the recording operation to align it to the side edge of the sheet, misalignment of the sheets, or a damage such as a scratch or folding of a sheet edge may be generated when the sheet guide moves to the inner side after the separation operation is finished.SOLUTION: This recording device is provided with a guide member lock member (side guide lock gear 25) transitioning between a meshing position for meshing with a rack part (left guide arm member 22) of a guide member (left guide member 18) and a non-meshing position separated from the rack part of the guide member. The movement of the guide member relative to a pressing plate 11 is selectively prevented.

Description

  The present invention relates to a recording apparatus including a feeding unit that feeds a recording medium and a recording unit that records (prints) an image on the recording medium.

  An ink jet recording apparatus is an example of a recording apparatus that includes a feeding unit that feeds a recording medium and a recording unit that records (prints) an image on the recording medium. As a configuration of the feeding unit and the recording unit of the ink jet recording apparatus, the one in which the feeding unit is arranged at the upper rear part of the apparatus main body and the recording unit is arranged in front of the feeding unit is set in the feeding unit. The supplied recording medium is fed to the recording means by the feeding means, and the recording medium performs a recording operation on the recording medium while the recording medium is conveyed by the conveying means. The recording medium is discharged outside the apparatus.

  Further, in the feeding means, guide members for restricting both ends in the width direction of the recording medium are arranged on the mounting table on which the recording medium is set, and one of them is set in accordance with the size of the recording medium set by the user of the apparatus. Alternatively, both guide members are moved to restrict the positions of both ends in the width direction of the recording medium. The guide member guides the side edge of the recording medium, and the feeding operation of the recording medium from the feeding unit to the recording unit is performed with high accuracy while preventing lateral displacement (slanting, etc.). The configuration is possible.

  Here, in a general ink jet recording apparatus, a recording medium fed from a feeding unit is conveyed by a conveying unit in a recording unit, and then temporarily stops, and then a carriage on which an ink cartridge is mounted is set in a recording medium conveying direction. While reciprocating in the intersecting direction, ink is ejected from the ink cartridge onto the recording surface of the recording medium to perform the recording operation. After the recording operation for one line is completed, the recording medium is again conveyed by a certain amount in the conveying direction, then stopped, and the recording operation is performed by ejecting ink from the ink cartridge while the carriage moves in the direction intersecting the conveying direction again. . By repeating this, a recording image is formed on the recording medium.

  In the ink jet recording apparatus as described above, since the recording operation for each line is repeated, the transport accuracy in the transport direction of the recording medium greatly affects the image quality. For this reason, during the recording operation, the frictional resistance between the guide member for regulating the position in the width direction of the recording medium and the recording medium side end acts as a back tension, and the recording medium in the conveying direction during the recording operation This affects the conveyance accuracy and contributes to the degradation of image quality.

  For example, Patent Document 1 proposes a recording apparatus having the following configuration with respect to the above problem. A pressure plate on which a recording medium is placed and rocked in the vertical direction to contact / separate a feeding means (feeding roller), and a guide member for guiding a side end portion of the recording medium placed on the pressure plate The pressure plate moves in the lateral direction in conjunction with the vertical swing, the guide member also moves in conjunction with the movement of the pressure plate, and the guide member is separated from the side edge of the recording medium. ing.

JP 2006-89278 A

  However, the conventional example shown in Patent Document 1 has the following problems. When the pressure plate and the guide member move in a direction away from the width direction end of the sheet (side edge of the recording medium) and the sheet is conveyed with the width direction end of the sheet and the guide member separated from each other. Suppose that the apparatus user manually operates the guide member and aligns it with the widthwise end of the sheet. In this situation, when the sheet conveying operation and the guide member separating operation are finished and the pressure plate and the guide member are moved in the direction approaching the width direction end of the sheet on and after the next page on the pressure plate, the guide member is moved to the sheet. There is a risk that the paper will move inward from the widthwise end of the paper, causing irregularities in the paper and damage such as scratches or breakage of the paper edge.

  SUMMARY OF THE INVENTION Accordingly, an object of the present invention is to prevent paper misalignment and damage to the end of a sheet that occur when the apparatus user moves the guide member in a state in which the width direction end of the sheet is separated from the guide member.

  One aspect of the present invention provides a pressure plate member for placing a recording medium, a guide member attached to the pressure plate member so as to be movable in a direction crossing a recording medium conveyance direction, and the recording medium. A feeding means for feeding and a conveying means arranged on the downstream side of the feeding means, and the guide member or a side end guide member which is a part of the guide member is separated from the recording medium side end. In the recording apparatus having guide member separating means for moving in the direction, the guide member or the side end guide member is restrained from moving relative to the pressure plate member when the guide member or the side end guide member is separated from the recording medium side end. Guide member locking means is provided.

  According to the present invention, it is possible to prevent the guide member from moving when the guide member is separated from the side edge of the recording medium. For this reason, it is possible to suppress the occurrence of irregularities in the recording medium on and after the next page placed on the pressure plate member and damage to the edge of the recording medium.

1 is a schematic perspective view of an ink jet recording apparatus that is an embodiment of the present invention. The perspective view (1) of the feeding part which is an Example of this invention. The perspective view (2) of the feeding part which is an Example of this invention. The schematic sectional drawing of the feeding part which is an Example of this invention. The typical perspective view of the connection state of the left and right guide member which is the Example of this invention. 1 is a schematic cross-sectional view of a recording unit that is an embodiment of the present invention. The schematic perspective view of the guide member locking member periphery which is an Example of this invention. The schematic cross section of the guide member which is the Example of this invention. The schematic perspective view of the guide member which is an Example of this invention, a guide member locking member, and a lever member. The schematic sectional drawing of the guide member locking member and lever member which are the Examples of this invention. The schematic sectional drawing of the guide member and lever member which are the Examples of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  However, the dimensions, materials, shapes, and relative arrangements of the components described in this embodiment are not intended to limit the scope of the present invention only to those unless otherwise specified. Absent.

(Inkjet recording device)
FIG. 1 shows a perspective view of an ink jet recording apparatus 1 according to an embodiment of the present invention. The ink jet recording apparatus 1 includes a feeding unit 2 and a recording unit 3. In FIG. 1, the left side is the front of the apparatus (indicated by FRONT), and the direction indicated by the symbol A is the recording medium conveyance direction.

  The feeding unit is disposed at the upper rear part of the main body of the inkjet recording apparatus 1, and the recording unit 3 is disposed in front of the main body of the feeding unit 2. The recording medium set in the feeding unit is fed in the direction A shown in FIG. 1 by the feeding unit of the feeding unit and reaches the recording unit 3. Thereafter, the recording operation is performed while being transported by the transport means mounted on the recording unit 3. After the recording operation is completed, the recording medium is discharged from the front of the recording unit 3 to the outside of the apparatus.

(Structure of feeding section)
Next, the configuration of the feeding unit according to the embodiment of the present invention will be described with reference to FIGS. 2 and 3 are schematic perspective views of the feeding unit 2, and FIG. 4 is a schematic cross-sectional view thereof. The feeding unit 2 includes a pressure plate 11, a feeding roller 12, a separation roller 13, and a feeding frame 15 that supports the pressure plate 11, the feeding roller 12, and the separation roller 13. Reference numeral 16 shown in FIG. 4 denotes a sheet bundle as a recording medium.

  The pressure plate 11 is a mounting table on which the sheet bundle 16 is placed. A rotation center portion 17 near the upper end of the pressure plate 11 is pivotally supported with respect to the feeding frame 15, and the lower end is centered on the rotation center portion 17. The feed roller 12 is configured to be rotatable in a direction of contacting / separating. The feed roller 12 has a cylindrical shape, is pivotally supported with respect to the feed frame 15, and is disposed at a position facing the vicinity of the lower end of the pressure plate. As shown in FIG. 2, the feeding roller 12 is disposed so as to face the vicinity of the substantially central portion of the pressure plate 11 in the width direction of the paper placement portion, and the width direction of the paper bundle 16 placed on the pressure plate 11. It is configured to feed near the center.

  Left and right guide members 18 and 19 for guiding the sheet bundle 16 are attached to the pressure plate 11. The left and right guide members 18 and 19 are respectively provided with left and right paper side end guide members. 2 and 4 show the sheet left end guide member 20 provided in the left guide member 18. FIG. 3 shows a sheet right end guide member 21 provided in the right guide member 19. The left and right guide members 18 and 19 are attached to the pressure plate 11 so as to be movable in the direction intersecting the sheet conveyance direction, that is, the sheet width direction, and can be operated by the apparatus user in accordance with the sheet size to be placed. It has a possible configuration.

  Here, FIG. 5 shows a schematic perspective view of the coupling mechanism of the left and right guide members 18 and 19. As shown in FIG. 5, the left and right guide members 18 and 19 are fastened together with the left and right guide arm members 22 and 23 having a rack shape so as to be movable together, and the left and right guide arm members 22 and 23 are pinions. It is engaged with a guide member gear 24 which is a member. (The guide member gear 24 is pivotally attached to the center of the back surface of the pressure plate 11 shown in FIGS. 2 to 4 so as to be rotatable with respect to the pressure plate). When the guide member is operated, the other guide member is also moved in conjunction with it. The left and right guide members 18 and 19 are adjusted so that the distance from the feeding roller 12 to the left and right side ends of the sheet bundle 16 is the same. Therefore, even when a sheet bundle of various sizes is placed on the pressure plate 11, the feeding roller 12 can be positioned near the center of the sheet bundle in the width direction by adjusting the position in the width direction with the left and right guide members 18 and 19. It is the composition located in. Therefore, when the sheet bundle 16 is fed, the difference between the left and right of the sheet conveyance accuracy is reduced.

  As shown in FIG. 4, the separation roller 13 is disposed below the feed roller 12 and on the downstream side of the pressure plate 11, and between the contact posture that contacts the feed roller 12 and the separated posture that is separated from the feed roller 12. Thus, it is configured to be pivotally supported around the separation roller shaft 13a. Further, the separation roller 13 has a configuration in which a substantially constant driven rotation resistance is given by a torque limiter mechanism, and the separation operation of the sheet bundle 16 is performed by the rotation of the feeding roller 12 and the driven rotation resistance of the separation roller 13. It has become.

(Configuration of recording unit)
FIG. 6 is a schematic cross-sectional view of the recording unit 3 according to the embodiment of the present invention. The recording unit 3 includes a conveyance roller 31 that is a conveyance unit, a driven roller 32 that rotates following the conveyance roller, a platen 33, a paper discharge roller 34, and a recording unit 35. When the leading edge of the sheet fed from the feeding unit reaches the conveyance roller 31, the sheet is conveyed through the recording unit while being sandwiched between the conveyance roller 31 and the driven roller 32. Further, when the leading edge of the paper reaches the paper discharge roller 34, it is transported by both the transport roller 31 and the paper discharge roller 34, and a recording operation is performed by the recording means 35 in the middle thereof.

(Feeding and recording operation)
Next, a series of feeding and recording operations will be described with reference to FIGS. In the standby state, the feeding unit 2 is configured to hold the pressure plate 11 at a position separated from the feeding roller 12 as shown in FIG. In this state, the apparatus user places the sheet bundle 16 on the pressure plate 11 as shown in FIG. The left and right side edge positions of the sheet bundle 16 are regulated by operating the left and right guide members 18 and 19 and the left and right sheet side edge guide members 20 and 21 so that the feeding roller 12 is substantially in the width direction of the sheet bundle 16. It can be adjusted so as to abut on the central portion.

  When the feeding operation is started, the feeding roller 12 starts to rotate in the rotation direction indicated by the symbol B in FIG. Then, the pressure plate 11 is swung in the swing direction indicated by reference numeral C, and the uppermost sheet 16 a of the sheet bundle 16 placed on the pressure plate 11 is pressed against and brought into contact with the outer peripheral surface of the feeding roller 12.

  When the feeding roller 12 further rotates in the rotation direction indicated by reference numeral B, the paper 16a that is in contact with the outer peripheral surface of the feeding roller 12 is fed in the feeding direction. As described above, the other sheet bundle 16z in a state of being overlapped with the lower side of the sheet 16a is separated from the uppermost sheet 16a by the driven rotation resistance of the separation roller 13, and the outer peripheral surface of the feeding roller 12 and the separation roller are separated. 13 is prevented from entering beyond the contact surface with the outer peripheral surface.

  When the feeding roller 12 further rotates in the rotation direction indicated by the symbol B and rotates to a predetermined rotation position, the pressure plate 11 swings in the swing direction indicated by the symbol D. In this way, the pressure plate 11 is separated from the feeding roller 12 and released from the state where the pressure plate 11 is pressed against the feeding roller 12, so the back tension from the pressure plate 11 and the feeding roller 12 to the paper is reduced. It has a configuration.

  When the feeding roller 12 further rotates, the leading edge of the paper 16a separated from the paper bundle reaches a position where the conveying roller 31 and the driven roller 32 shown in FIG. Here, by controlling the rotation direction of the conveyance roller 31 and the rotation speed and the number of rotations of the feeding roller 12 and the conveyance roller 31, a so-called registration removing operation for aligning the leading end of the sheet 16 a at a right angle to the sheet conveyance direction is performed. Do. Here, since the left and right side end guide members 20 and 21 of the left and right guide members 18 and 19 arranged on the pressure plate regulate the left and right side ends of the paper 16a, the positional accuracy of the paper 16a in the width direction is improved. This is a configuration capable of performing a registration removing operation for aligning the tips while preventing a drop.

  After the registration operation is completed, the paper 16a is sandwiched between the transport roller 31 and the driven roller 32, and is transported by the rotational drive of the transport roller 31 in the paper transport direction. Thereafter, the recording is performed after the paper 16a reaches the recording operation start position. The recording operation by means 35 is started.

  Here, after the conveyance of the paper 16a by the conveyance roller 31 is started and before the recording operation by the recording unit 35 is started, the separation roller 13 swings in a direction away from the feeding roller 12 and is fed. The drive to the feed roller 12 is in a non-transmission state. For this reason, even if the paper 16a transported by the transport roller 31 and the feeding roller 12 are in contact with each other, the feeding roller 12 is driven to rotate following the paper 16a (so-called accompanying state). Therefore, the back tension from the feeding roller 12 and the separation roller 13 to the paper 16a is reduced.

  In the present embodiment, after the conveyance of the sheet 16a by the conveyance roller 31 is started, before the recording operation by the recording unit 35 is started, the left and right sheets are separated by the sheet side end guide member separating unit described later. The side end guide members 20 and 21 are configured to move in a direction away from the side end of the paper 16a. Therefore, the friction resistance at the paper side edge is reduced, and the back tension from the left and right paper side edge guides 20, 21 to the paper 16a is also reduced.

  When the paper 16a is conveyed by the conveyance roller 31 and reaches the recording operation start position, the conveyance by the conveyance roller 31 is temporarily stopped. In this state, the recording means 35 reciprocates on the printing surface of the paper 16a in a direction crossing the transport direction, and ink is ejected in the process to perform a recording operation for one line. When the recording operation for one line is completed, the sheet 16a is conveyed by a necessary amount by the conveying roller 31 and stopped. Then, the recording means 35 reciprocates again, and a recording operation by ink ejection is performed in the process. By repeating this operation, a recording operation can be performed on almost the entire surface of the sheet.

  As described above, in the present embodiment, the pressure plate 11 and the separation roller 13 are separated from the feed roller 12 and the drive of the feed roller 12 is not transmitted during the recording operation on the paper 16a. The back tension from the feeding roller 12 and the separation roller 13 to the paper is reduced. Further, by separating the left and right paper side edge guide members 20 and 21 from the paper side edge, the back tension from the left and right paper side edge guides 20 and 21 to the paper is reduced. In this way, by reducing various back tensions on the paper, the paper conveyance accuracy is improved, and a recording operation with excellent image quality can be performed.

(Operation of the paper edge guide when the next paper is fed)
When the recording operation of the sheet 16a is completed by the above-described feeding and recording operation, the feeding operation of the second sheet 16b is started. Here, after the recording operation of the first sheet 16a is finished and before the feeding of the second sheet 16b is started, the left and right sheet side edge guide members 20 and 21 are moved to the second sheet 16b. It is the structure which moves to the direction which contacts the side edge part. As described above, in this embodiment, the left and right paper side edge guide members are separated from the paper side edge during the recording operation, and the left and right side edge guide members are moved inward when the next paper is fed. Thus, it is possible to perform a good paper feeding operation by contacting the paper bundle side end and guiding the paper bundle side end during paper feeding.

(Side guide lock means)
Here, in this embodiment, a guide member locking means for suppressing the movement of the guide member relative to the pressure plate member is provided. First, FIG. 5 shows the position of the side guide lock gear 25 which is a guide member lock member. As shown in FIG. 5, the side guide lock gear 25 is disposed in the vicinity of the guide member gear 24, which is a pinion member, at a position facing the rack surface of the left guide arm member 22. Next, the guide member locking means in the present embodiment will be described with reference to FIGS. The side guide lock gear 25 has a tooth shape that meshes with the rack shape of the left guide arm member 22. FIG. 7A shows the position of the side gear lock gear 25 with respect to the left guide arm member 22 at the time of paper setting and paper feeding operation, and FIG. 7B shows the position at the time of recording operation. 7A, the side guide lock gear 25 and the left guide arm member 22 are separated from each other, and the side guide lock gear 25 is non-toothed with respect to the left guide arm member 22. In position. For this reason, the apparatus user can move the guide member with respect to the pressure plate. On the other hand, during the recording operation shown in FIG. 7B, the side guide lock gear 25 moves upward (in the direction of the arrow) in FIG. 7B and is in a meshed position with respect to the left guide arm member 22. . For this reason, the movement of the left guide arm member 22 in the left-right direction is suppressed. Here, as shown in FIG. 5, the right guide arm member 23 is connected to the left guide arm member 22 via the guide member gear 24, so that the left and right guides are locked by being locked by the side guide lock gear 25. The movement of the arm members 22 and 23 is suppressed.

  Thus, in this embodiment, as described with reference to FIGS. 4 and 6, the left and right paper side edge guide members 20 and 21 are separated from the side edge of the paper 16a during the recording operation, and the second paper 16b. Before the sheet feeding starts, the left and right sheet-side edge guide members 20 and 21 move in a direction in contact with the side edge of the second sheet 16b. Here, at the time of the recording operation, as shown in FIG. 7B, the side guide lock gear 25 is in a meshing position with respect to the rack shape of the left guide arm member 22, and the left and right guide members 20 and 21 with respect to the pressure plate member 11. Movement is suppressed. For this reason, the user of the apparatus is confused with an operation mistake at the time of paper setting, and the left and right guide members 18 and 19 are erroneously operated to contact the side edges of the paper 16a. Is suppressed. Therefore, when feeding of the second sheet 16b starts, the left and right sheet side end guide members 20 and 21 move inward and become narrower than the width of the sheet bundle 16, and the end of the sheet bundle is broken or damaged. It prevents it from occurring.

  Here, as described above, the side guide lock gear 25 is disposed in the vicinity of the left side of the guide member gear 24 that is a pinion member, and is configured to mesh with the left guide arm member 22. If the side guide lock gear 25 is configured to mesh with the left guide arm member 22 on the right side of the guide member gear 24, even if the left guide member 18 is expanded to the leftmost side, the left guide arm member 22 In order for the side guide lock gear 25 to mesh, the right end portion of the left guide arm member 22 needs to be long. However, when the side guide lock gear 25 is configured to mesh with the left guide arm member 22 on the left side of the guide member gear 24 as in the present embodiment, the right end portion of the left guide arm member 22 is connected to the left guide member 18. When the guide member gear 24 is engaged with the left guide arm member 22 when the guide member gear 24 is engaged with the leftmost guide arm member 22 when the guide member gear 24 is extended to the leftmost side. Therefore, it is not necessary to make the length of the left guide arm member 22 longer than necessary. As described above, the side guide lock gear 25 is disposed at a position between the guide member gear 24 and the left guide member 18 so as to mesh with the left guide arm member 22. For this reason, the length of the end portion of the left guide arm member 22 is prevented from being unnecessarily long, which contributes to downsizing of the device.

  In this embodiment, the side guide lock gear 25 is disposed between the guide member gear 24 and the left guide member 18 so as to mesh with the left guide arm member 22. Even if it is disposed at a position where it engages with the right guide arm member 23 between the guide member 19, it is obvious that it contributes to the miniaturization of the apparatus as in this embodiment.

(Guide member configuration and paper side edge guide separation means configuration)
Next, the configuration of the left guide member 18 and the configuration of the sheet side end guide separating means will be described with reference to FIG. 8A and 8B are schematic cross-sectional views of the left guide member 18 as viewed from the downstream side in the paper conveyance direction. FIG. 8A is a schematic cross-sectional view during paper setting and paper feeding operation, and FIG. 8B is a schematic cross-sectional view during recording operation. 8A and 8B, the paper left end guide member 20 is attached to the left guide base 26 so as to be movable in the paper width direction (left and right directions in FIGS. 8A and 8B). . The left end guide shift member 27 is attached to the left guide base 26 so as to be movable in the vertical direction.

  As shown in FIG. 8A, the paper left end guide member 20 is in contact with the paper side end abutting portion 27a of the left end guide shift member 27 at the time of paper setting and paper feeding operation, and the left side of the paper The position of the sheet bundle 16 in the width direction is defined with the end guide member 20 protruding from the left guide base 26. The sheet left end guide member 20 receives a biasing force in the direction indicated by symbol E in FIG. 8A by the sheet left end guide spring 28 schematically illustrated, and the left end guide shift member 27 is schematically illustrated. The left end guide shift spring 29 shown in FIG. 8 receives a biasing force in the direction (downward) indicated by the symbol F in FIG. On the other hand, as shown in FIG. 8B, during the recording operation, the left end guide shift member 27 moves upward against the urging force of the left end guide shift spring 29. Then, the paper left end guide member 20 is separated from the paper side end abutting portion 27a of the left end guide shift member 27, and is moved in the direction indicated by symbol E in FIG. Moving. As a result, the sheet left end guide member 20 is buried in the left guide base 26 and is separated from the end of the sheet bundle 16.

  When the recording operation is completed, the upward movement of the left end guide shift member 27 is released. Then, due to the biasing force of the left end guide shift spring 29, the left end guide shift member 27 moves downward in FIGS. 8A and 8B, and in conjunction with this, the sheet left end guide member 20 moves to the left side of the sheet. It moves to the right in FIGS. 8A and 8B against the urging force of the end guide spring 28. Then, the state transitions to the state at the time of paper setting and paper feeding operation shown in FIG.

  As described above, in this embodiment, the left end guide shift member 27 moves up and down to cause the left end guide member 20 to protrude / embed away from the left guide base 26 to contact / contact the end of the sheet. A sheet-side end guide separating unit for controlling the separating operation is provided.

(Side guide lock gear movement and side end guide shift member moving means)
Next, the means for moving the side guide lock gear 25 and the left end guide shift member 27 will be described with reference to FIGS.

  FIG. 9 is a schematic perspective view of the side guide lock gear 25, the left guide member 18, and the guide shift lever, which is a moving means for the side guide lock gear 25 and the left end guide shift member 27, as viewed from the upstream side in the sheet conveying direction. In FIG. 9, a guide shift lever 30 is a lever member that is rotatable about a rotation shaft 30a. As shown in FIG. 4, the guide shift lever 30 is pivotally supported by the feeding frame 15 and is disposed on the opposite side of the sheet bundle 16 placement surface with respect to the pressure plate member 11. Further, as shown in FIG. 9, the guide shift lever 30 has a side guide lock gear pressing portion 30b integrally near the center in the width direction, and further on the end side of the side guide lock gear pressing portion 30b. A guide shift pressing portion 30c is integrally provided.

  FIG. 10 is a schematic cross-sectional view of the left guide arm member 22, the side guide lock gear 25, and the side guide lever 30 when viewed from the G direction in FIG. 9, and FIG. FIG. 10B is a schematic cross-sectional view during a recording operation. 11 is a schematic cross-sectional view of the left guide member 18 and the side guide lever 30 when viewed from the G direction in FIG. 9, and FIG. 11A is a schematic cross-sectional view during paper setting and paper feeding operation. 11B is a schematic cross-sectional view during the recording operation.

  The positions of the side guide lock gear 25 and the left end guide shift member 27 at the time of paper setting and paper feeding are as follows. 10A, the guide shift lever 30 is separated from the side guide lock gear 25. As shown in FIG. 7A, the side guide lock gear 25 is non-toothed with respect to the left guide arm member 22. The left and right side guides can be moved relative to the pressure plate. 11A, the guide shift lever 30 is separated from the left end guide shift member 27, and the sheet left end guide member 20 protrudes from the left guide base 26 as shown in FIG. 8A. It becomes a state.

  On the other hand, the positions of the side guide lock gear 25 and the left end guide shift member 27 during the recording operation are as follows. In FIG. 10B, when the guide shift lever 30 rotates around the rotation shaft 30a, the side guide lock gear pressing portion 30b provided on the guide shift lever 30 contacts the lower surface of the side guide lock gear 25. Is pressed. Accordingly, the side guide lock gear 25 moves upward, and as shown in FIG. 7B, the side guide lock gear 25 and the left guide arm member 22 mesh with each other, and the movement of the left and right side guides with respect to the pressure plate is suppressed. It has a configuration. In FIG. 11B, the guide shift lever 30 rotates about the rotation shaft 30a, so that the guide shift pressing portion 30c provided on the guide shift lever 30 contacts the lower surface of the left end guide shift member 27. , This is pressing. Therefore, the left end guide shift member 27 moves upward, and the sheet left end guide member 20 is buried in the left guide base 26 as described with reference to FIG.

  Since the side guide lock gear 25 does not move in the paper width direction and is disposed in the vicinity of the guide member gear 24, the side guide lock gear pressing portion 30b of the guide shift lever 30 is shown in FIG. The guide shift lever 30 is formed with a relatively small width near the center in the width direction. On the other hand, since the left guide member 18 can move on the pressure plate in the paper width direction, the position of the left end guide shift member 27 moves in the paper width direction. Therefore, as shown in FIG. 9, the guide shift pressing portion 30c of the guide shift lever 30 is formed with a relatively large width on the end side of the side guide lock gear pressing portion 30b. As shown in FIG. 5, the right guide member 19 is connected to the left guide member 18 via a guide member gear 24, and the right guide member 19 can move on the pressure plate in the paper width direction. For this reason, as shown in FIG. 9, the guide shift pressing portion 30c of the guide shift lever 30 is also formed on the opposite side in the paper width direction.

  As described above, in this embodiment, together with the separation operation of the paper left end guide member from the paper end, the mutual transition between the meshing position and the non-meshing position of the side guide lock gear with respect to the left guide arm member is the same. This is performed by a guide shift lever 30 which is a lever part. For this reason, it is the structure which can implement | achieve the movement suppression lock | rock operation | movement of the left and right side guides with respect to the pressure plate with high accuracy.

  Further, by arranging the side guide lock gear 25 in the vicinity of the guide member gear 24, it becomes possible to arrange the side guide lock gear pressing portion 30b and the guide shift pressing portion 30c of the guide shift lever 30 on the same axis. The structure contributes to downsizing.

  As described above, in the feeding unit according to the embodiment of the present invention, the guide shift lever 30 is rotated to separate the left and right sheet side end guides 20 and 21 from the sheet bundle side end and the side guide lock. By engaging the gear 25 and the left guide arm member 22, the movement of the left and right guide members with respect to the pressure plate is suppressed. For this reason, a simple configuration of a feeding and recording apparatus that prevents unevenness of sheets and damage to the end of the sheet from occurring when the apparatus user moves the guide member in a state where the end of the sheet and the guide member are separated from each other. Is realized.

  In this embodiment, left and right paper side end guide members 20 and 21 are provided in a part of the left and right guide members 18 and 19, and the left and right paper side end guide members 20 and 21 are separated from the paper side end. The sheet side end guide member separating means for moving the left and right guide members 18 and 19 itself is also provided in the configuration in which the guide member separating means for moving the left and right guide members 18 and 19 away from the sheet side end is provided by the side guide lock gear. It is obvious that the same effect can be obtained with respect to the movement restraint of the left and right guide members.

  The present invention based on the embodiment described above has the following aspects and effects.

  According to a first aspect of the present application, there is provided a pressure plate member for placing a recording medium, a guide member attached to the pressure plate member so as to be movable in a direction crossing a recording medium conveyance direction, and the recording medium. A feeding means for feeding and a conveying means arranged on the downstream side of the feeding means, and the guide member or a side end guide member which is a part of the guide member is connected to a side edge of the recording medium ( In a recording apparatus having a guide member separating means for moving in a direction away from a recording medium transport direction (an end portion in a direction intersecting the recording medium conveyance direction), the guide member or the side end guide member is separated from the recording medium side end. And a guide member locking means for suppressing movement of the guide member relative to the pressure plate member.

  In a second aspect of the present application, in addition to the first aspect, the recording apparatus includes a recording unit disposed on a downstream side of the conveying unit, and the recording medium reaches the conveying unit and the conveying unit. The guide member or the side end guide member is separated by the guide member separation unit after the conveyance operation by the recording unit is started and before the recording operation by the recording unit on the recording medium is started.

  According to the first and second aspects, when the guide user moves away from the guide member, which may be confused with an operation error when the recording medium is set, the guide member may be moved erroneously. It becomes possible to prevent movement. For this reason, it is possible to suppress the occurrence of unevenness of the recording medium after the next page placed on the pressure plate and damage to the edge of the recording medium.

  Further, in the third aspect of the present application, in addition to the second aspect, the guide member is integrally formed with a rack shape, and the guide member locking means is a tooth mold that meshes with the rack shape of the guide member. The guide member locking member having a shape is configured to mutually transition between a meshing position that meshes with a rack portion of the guide member and a non-meshing position that is separated from the rack portion of the guide member. .

  According to a fourth aspect of the present application, in addition to the third aspect, a lever member pivotally supported at the rotation center is provided on the opposite side of the recording medium mounting surface with respect to the pressure plate member. By the rotation of the lever member, a mutual transition between the meshing position and the non-meshing position of the guide member locking member is performed.

  According to the third and fourth aspects, in addition to the effects of the first and second aspects, it is possible to configure the guide member locking means with a simple mechanism, and the paper is uneven and the edge of the paper is damaged. The recording apparatus that prevents the occurrence of the above is realized with a simple configuration.

  According to a fifth aspect of the present application, in addition to the fourth aspect described above, the guide member or the side end guide member is separated along with the movement of the guide member lock member by the rotation of the lever member. It is characterized by that.

  According to the fifth invention, in addition to the effects of the first to fourth inventions, it is possible to drive the guide member locking means and the guide member separating means with a common mechanism. The recording apparatus that prevents the occurrence of damage is realized with a simpler configuration.

  According to a sixth aspect of the present application, in addition to the third aspect, the left and right guide members are attached to the pressure plate member, and the pinion member rotates in the vicinity of the substantially central portion in the width direction of the recording medium. The pinion member is disposed at a position that meshes with the rack shape of the left and right guide members, and the guide member lock member is configured to be either the pinion member or the left or right guide member. Between, it arrange | positions in the position which meshes | engages with the rack-shaped part of the said guide member, It arrange | positions in the vicinity of the said pinion member, It is characterized by the above-mentioned.

  According to the sixth aspect of the invention, the size of the apparatus can be reduced without making the rack portion of the guide member longer than necessary.

  Of course, the invention of the present application is not limited to the above-described embodiment, and various modifications can be made without departing from the inventive idea of the present application.

11 Pressure plate 12 Feed roller 18 Left guide member 19 Right guide member 20 Paper left end guide member 21 Paper right end guide member 22 Left guide arm member 23 Right guide arm member 24 Guide member gear 25 Side guide lock gear 27 Left end guide shift Member 28 Paper left end guide spring 29 Left end guide shift spring 30 Guide shift lever 35 Recording means

Claims (6)

A pressure plate member for placing the recording medium, a guide member attached to the pressure plate member so as to be movable in a direction crossing the recording medium conveyance direction, and a feeding means for feeding the recording medium; A guide member that moves the guide member or a side end guide member that is a part of the guide member in a direction away from the side end of the recording medium. In a recording apparatus having a separating means,
Recording comprising a guide member locking means for suppressing movement of the guide member relative to the pressure plate member when the guide member or the side end guide member is separated from the side end of the recording medium. apparatus.   The recording apparatus includes recording means arranged on the downstream side of the conveying means, and the recording medium reaches the recording medium by the recording means after the recording medium reaches the conveying means and the conveying operation is started by the conveying means. The recording apparatus according to claim 1, wherein the guide member or the side end guide member is separated by the guide member separation means before the recording operation is started.   A rack shape is integrally formed on the guide member, and the guide member locking member has a tooth shape that meshes with the rack shape of the guide member, and the guide member locking member meshes with the rack portion of the guide member. The recording apparatus according to claim 2, wherein the engaging position and the non-engaging position spaced apart from the rack portion of the guide member are transited to each other.   A lever member pivotally supported at the center of rotation is provided on the opposite side of the recording medium mounting surface with respect to the pressure plate member, and by the rotation of the lever member, the engagement position of the guide member lock member The recording apparatus according to claim 3, wherein mutual transition with a non-engaged position is performed.   The recording apparatus according to claim 4, wherein the guide member or the side end guide member is moved away along with the movement of the guide member lock member by the rotation of the lever member.   The left and right guide members are attached to the pressure plate member, and the pinion member is attached in a state where the pinion member is rotatable in the vicinity of the center in the width direction of the recording medium. The pinion member is a rack shape of the left and right guide members. The guide member locking member is arranged at a position where the guide member locking member meshes with the rack shape portion of the guide member between the pinion member and the left or right guide member. The recording apparatus according to claim 3, wherein the recording apparatus is disposed in the vicinity of the pinion member.

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