JP2017116748A - Sheet conveying device and image forming apparatus - Google Patents

Abstract

PROBLEM TO BE SOLVED: To guide a sheet to a registration roller pair with a simple configuration.SOLUTION: A sheet conveying device 50 comprises: a rubber roller 15b that rotates to convey, while holding, a sheet and a metal roller 15a that has a smaller coefficient of friction than that of the rubber roller 15b; and a pre-registration path 14 that is located on the upstream side in a sheet conveyance direction, guide the sheet to be conveyed between a guide wall 53 including a recess part 55 and a guide wall 52 including a projection part 54 facing the recess part 55, and guides, with the recess part 55, a sheet to be conveyed through the projection part 54 and a sheet to be conveyed not through the projection part 54 so that a leading end of each of the sheets comes into contact with the metal roller 15a.SELECTED DRAWING: Figure 3

Description

  The present invention relates to a sheet conveying apparatus that conveys a sheet, and an image forming apparatus that includes the sheet conveying apparatus and forms an image on a sheet.

  2. Description of the Related Art Conventionally, image forming apparatuses such as copying machines, printers, and facsimiles that form an image on a sheet feed the sheet to align the image to be transferred and the sheet when the sheet is fed to an image forming unit that forms an image on the sheet. The sheet is straightened before being sent. For this reason, the inclined sheet is abutted against the nip portion of the registration roller pair serving as an adjustment unit that has stopped rotating, bent, corrected, and fed into the image forming unit. For this reason, it is necessary to bring the leading end of the sheet into contact with the nip portion of the pair of rotating bodies.

  2. Description of the Related Art As a sheet conveying apparatus that abuts the leading end of a sheet on a nip portion of a pair of rotating bodies, there is a configuration in which a sheet is guided along a wall surface of a guide path by a protruding member and the leading end abuts on the nip portion (Patent Document 1). ).

JP 2010-2222077 A

  However, in the conventional sheet conveying apparatus, after the sheet is guided to the nip portion of the registration roller pair by the protruding member, the protruding member is separated from the wall surface of the guide path so that the sheet is bent. The structure to rotate is required and the structure is complicated.

  An object of the present invention is to provide a sheet conveying apparatus having a simple structure and capable of guiding a sheet to an adjustment unit.

  A sheet conveying apparatus according to the present invention includes an adjustment unit that adjusts a conveyance state of the sheet by contacting a leading end of the conveyed sheet, and a first unit that is disposed upstream of the adjustment unit in the sheet conveyance direction and includes a recess. A sheet conveyed between the first guide member and a second guide member having a convex portion facing the concave portion is guided, and the sheet conveyed via the convex portion and the convex portion are not interposed. And a guide path that guides the conveyed sheet so that the leading end contacts the adjustment unit by the concave portion.

  An image forming apparatus of the present invention includes the above-described sheet conveying device and an image forming unit that forms an image on a sheet conveyed by the sheet conveying device, and the adjustment unit of the sheet conveying device is a pair of registration rollers. It is characterized by that.

  The sheet conveying apparatus of the present invention can guide a sheet to a pair of rotating bodies with a simple configuration.

1 is a cross-sectional view taken along a sheet conveying direction of a copying machine as an image forming apparatus according to an embodiment of the present invention. 1 is an overall view of a sheet conveying apparatus. FIG. 3 is a partially enlarged view of the sheet conveying apparatus in FIG. 2. FIG. 3 is a diagram when the sheet conveying apparatus in FIG. 2 guides a sheet. FIG. 9A is a diagram for guiding a sheet sent from a paper feeding unit. FIG. 6B is a diagram for guiding the sheet sent from the multi-feed unit. FIG. 6C is a diagram for guiding a sheet sent from the duplex conveyance path.

  Hereinafter, a sheet conveying apparatus according to an embodiment of the present invention and an image forming apparatus including the sheet conveying apparatus will be described with reference to the drawings.

(Image forming device)
FIG. 1 is a cross-sectional view along the sheet conveying direction of a copying machine 10 as an image forming apparatus according to an embodiment of the present invention. The copying machine 10 converts image information read by the image reading device 24 or image information from an information device such as an external personal computer or a facsimile into light modulation information by the laser emission writing unit 11, and uses a laser beam to convert the photosensitive drum to a photosensitive drum. A spot image is formed on 18. In addition to the copying machine, the image forming apparatus includes a printer, a facsimile, and the like, and is not limited to the copying machine.

  An electrostatic latent image is formed on the photosensitive drum 18 by the main scanning by the movement of the light spot in the axial direction of the photosensitive drum 18 and the sub-scanning by the rotation of the photosensitive drum 18. The electrostatic latent image is an invisible image and is changed into a visible image as a toner image by the developer (toner) from the toner bottle unit 16.

  On the other hand, a main paper feeding unit 12 for feeding sheets is disposed below the apparatus main body 10A of the copying machine 10. A box-shaped sheet cassette 12a constituting the main sheet feeding unit 12 is detachably mounted on the apparatus main body 10A, and sheets P are stored in a stacked manner on the middle support plate 12b. The middle support plate 12b is urged upward by a paper feed pressure spring 12c to press the sheet P against the paper feed roller 12d.

  The paper feed roller 12d is disposed on the end portion where the sheet is fed from the sheet cassette 12a. The sheet feeding roller 12d receives and rotates the uppermost sheet among the stacked sheets lifted upward by the middle support plate 12b, and feeds the sheet.

  The sheet fed by the paper feed roller 12d is sent to the pre-registration path 14 by the separation roller pair 12f and the paper feed unit transport roller pair 12e. The separation roller pair 12f is configured to separate the sheets one by one when the sheets fed from the sheet cassette 12a overlap. The sheet P is a part of a sheet conveying device 50 described later, and guides the pre-registration path 14 and abuts against the metal roller 15a of the registration roller pair 15 so that the photosensitive drum 18 and the transfer roller 17 are contacted at an appropriate timing. It is supposed to be sent in between. The toner bottle unit 16, the photosensitive drum 18, the transfer roller 17, and the like constitute an image forming unit 31.

  A multi paper feed unit 13 is provided on the right side of the main paper feed unit 12. The multi-feed unit 13 can also feed a sheet to the registration roller pair 15. The multi-feed unit 13 registers a sheet placed on a multi-feed stacking tray 13a that can open and close the apparatus main body 10A in the direction of arrow D by a multi-feed roller 13b, a separation friction plate 13c, and a multi-conveying roller pair 13d. The paper is fed to the front path 14.

  A transfer roller 17 is disposed in contact with a transfer area on the photosensitive drum 18 where a toner image is formed. A transfer bias is applied to the transfer roller 17, and the toner image on the photosensitive drum 18 is electrostatically transferred to the sheet by the transfer bias. The unfixed toner image is fixed on the sheet on which the toner image has been transferred by heating the fixing film 19a of the fixing device 19 and the pressure of the pressure roller 19b pressed against the fixing film 19a.

  The sheet on which the toner image has been fixed is sent to a paper discharge conveyance path 20 provided in the paper discharge unit 22, and then moved to a position above the apparatus main body 10 </ b> A by a paper discharge roller 21 provided in the paper discharge conveyance path 20. The paper is discharged to the provided paper discharge tray 23. The sheet on which the toner image is formed on both sides is sent from the paper discharge conveyance path 20 to the reverse conveyance path 27, is switched back by the reverse roller pair 28, is conveyed on the double-side conveyance paths 26 and 29, and is again the pre-registration path. 14 is sent. Then, an image is formed on the back side of the sheet in the same manner as when a toner image is formed on one side of the sheet. As a result, the toner image is formed on both sides of the sheet, and finally the sheet is discharged to the discharge tray 23.

(Sheet conveying device)
FIG. 2 is an overall view of the sheet conveying apparatus 50. FIG. 3 is a partially enlarged view of the sheet conveying apparatus 50 of FIG. FIG. 4 is a diagram when the sheet conveying device 50 guides the sheet. FIG. 4A is a diagram for guiding the sheet sent from the main sheet feeding unit 12. FIG. 4B is a diagram for guiding the sheet sent from the multi-feed unit 13. FIG. 4C is a diagram for guiding the sheets sent from the duplex conveyance paths 26 and 29.

  The sheet conveying apparatus 50 includes a registration roller pair 15 that is an adjustment unit and a pair of rotating bodies, a pre-registration path (guide path) 14, a paper feeding unit path 14A, a multi-unit path 14B, a double-sided conveyance path 29, and the like. . The sheet feeding unit path 14A, the multi-unit path 14B, and the double-sided conveyance path 29 are a plurality of pre-merging guide paths. The sheet feeding unit path 14A, the multi-unit path 14B, and the double-sided conveyance path 29 are merged at a merging point 14C on the upstream side in the sheet conveyance direction of a curved portion described later formed in the pre-registration path 14.

  The registration roller pair 15 is configured to sandwich and rotate a sheet by a metal metal roller 15a having a small friction coefficient and a rubber rubber roller 15b having a large friction coefficient and having elasticity. .

  As described above, the separation roller pair 12f, the sheet feeding unit conveyance roller pair 12e, the downstream of the main sheet feeding unit 12, so that the sheet P fed from the main sheet feeding unit 12 can be conveyed to the registration roller pair 15. A paper feed unit path 14A and the like are provided. The sheet feeding unit path 14A is formed of guide walls 14Aa and 14Ab as a pair of guide members that guide the sheet while being opposed to each other, and is connected to the pre-registration path 14. The guide walls 14 </ b> Aa and 14 </ b> Ab have an interval that forms a space AR <b> 1 that can store the bent sheet when the sheet is bent by the registration roller pair 15.

  The multi-conveying roller pair 13d constituting the multi-feed unit 13 is provided at the upstream end of the multi-unit path 14B that guides the sheets placed on the multi-feed stacking tray 13a. The multi-unit path 14B is formed by a pair of guide walls 14Ba and 14Bb as a pair of guide members that guide the sheet while facing each other, and is connected to the pre-registration path 14. The guide walls 14Ba and 14Bb have an interval for forming a space AR2 that can accommodate the bent sheet when the sheet is bent by the registration roller pair 15. The guide walls 14Ab and 14Ba are formed as separate members, but may be a common member. The double-sided conveyance path 29 is also configured to guide the sheet with a pair of guide walls 29a and 29b facing each other. The guide wall 14Bb and the guide wall 29b may be separate members or common members. Further, the downstream end portions of the guide wall 14Bb and the guide wall 29b are connected but may not be connected.

  The pre-registration path 14 is formed by a pair of guide walls 52 and 53 as guide members that guide the sheet while facing each other. The guide wall 52 as the first guide member is a single plate-like member that is integrally connected to the guide wall 14Aa. The guide wall 53 as the second guide member is a single plate-like member formed integrally with the guide wall 29a.

  A curved portion 14D that curves toward the rubber roller 15b and guides the sheet to the metal roller 15a is formed at the end portion that guides the leading edge of the pair of guide walls 52 and 53 of the pre-registration path 14. The curved portion 14D is composed of a concave portion 55 formed on one guide wall 53 located on the rubber roller 15b side of the pair of guide walls 52 and 53 and a convex portion 54 formed on the other guide wall 52. Is formed. The terminal portion 53a of one guide wall 53 extends to a position intersecting with a tangent L1 passing through the upstream end portion 55d of the concave portion 55 in the sheet conveying direction and the top portion 54a of the convex portion 54.

  The convex portion 54 is formed in a protruding shape with an upstream slope 54b on the upstream side and a downstream slope 54c on the downstream side in the sheet conveying direction with the top portion 54a as a boundary. The recess 55 is formed in a concave shape with an upstream slope 55b on the upstream side in the sheet conveying direction and a downstream slope 55c on the downstream side with respect to the bottom 55a. In addition, it is preferable that the convex part 54 and the recessed part 55 are formed in parallel with each other.

  An angle α1 formed by the upstream inclined surface 54b of the convex portion 54 in the sheet conveying direction and the downstream inclined surface 55c of the concave portion 55 in the sheet conveying direction is set to an acute angle. That is, the angle α1 formed by the extension line L2 of the upstream slope 54b and the downstream slope 55c is set to an acute angle. The angle α1 is preferably 45 degrees or less.

  Of the guide walls of the paper feeding unit path 14A, the multi-unit path 14B and the double-sided conveyance path 29 as a plurality of pre-merging guide paths, a guide wall 29a closest to the rubber roller 15b and an upstream inclined surface 54b upstream of the convex portion 54 Is set to an acute angle. That is, the angle α2 formed by the extension line L3 of the guide wall 29a and the upstream slope 55b is set to an acute angle. The angle α2 is preferably 45 degrees or less.

  Further, the interval A between the end portions 52a and 53a that guide the leading ends of the sheets of the guide walls 52 and 53 forming the pre-registration path 14 is either the height B of the convex portion 54 or the depth C of the concave portion 55. Is set narrower (A <B, A <C). The interval A between the terminal portions 52a and 53a is set to be narrower than the interval D between the concave portion 55 and the convex portion 54 (A <D). Further, the interval A between the terminal portions 52a and 53a is set to be narrower than the interval E between the guide wall 52 and the guide wall 29a at the junction 14C where the plurality of pre-merging guide paths meet (A <E). Pre-registration sensors 51 that detect that the sheet conveyed through the pre-registration path 14 protrudes from the terminal portions 52a and 53a are disposed at the terminal portions 52a and 53a of the guide walls 52 and 53.

  In the sheet conveying apparatus 50 described above, the sheet P (FIG. 4A) fed from the main sheet feeding unit 12 is sequentially applied to the upstream end 55d of the recess 55 and the downstream slope 55c of the recess 55. Guided by contact. Then, the sheet P finally comes into contact with the peripheral surface (surface) 15aa of the metal roller 15a by the guidance of the end portion 53a of the guide wall 53. At this time, the registration roller pair 15 stops rotating. The sheet P in contact with the peripheral surface 15aa of the metal roller 15a smoothly slides on the peripheral surface (surface) 15aa of the metal roller 15a and is received by the nip portion NP of the registration roller pair 15. The registration roller pair 15 stops rotating, but the sheet continues to be conveyed by the sheet feeding unit conveyance roller pair 12e (FIG. 2). Therefore, when the sheet is bent and skewed in the space AR1 (FIG. 2) of the sheet feeding unit path 14A, the leading end of the sheet is corrected to the nip portion NP. Then, the sheet is conveyed between the photosensitive drum 18 (FIG. 1) and the transfer roller 17 by the registration roller pair 15 that starts rotating at a predetermined timing.

  Further, the sheet P (FIG. 4B) fed from the multi-feed unit 13 is transferred to the guide wall 29a of the double-sided conveyance path 29, the upstream slope 54b of the convex portion 54, and the downstream slope 55c of the concave portion 55. Sequentially contacted and guided. Then, the sheet P finally comes into contact with the peripheral surface (surface) 15aa of the metal roller 15a by the guidance of the end portion 53a that guides the leading edge of the sheet of the guide wall 53. At this time, the registration roller pair 15 stops rotating. The sheet P in contact with the peripheral surface (surface) 15aa of the metal roller 15a smoothly slides on the peripheral surface (surface) 15aa of the metal roller 15a and is received by the nip portion NP of the registration roller pair 15. The registration roller pair 15 stops rotating, but the sheet continues to be conveyed by the multi-conveyance roller pair 13d (FIG. 2). Therefore, when the sheet is bent and skewed in the space AR2 (FIG. 2) of the multi-unit path 14B, the leading edge of the sheet is corrected to the nip portion NP. Then, the sheet is conveyed between the photosensitive drum 18 (FIG. 1) and the transfer roller 17 by the registration roller pair 15 that starts rotating at a predetermined timing.

  Further, the sheet P (FIG. 4C) fed from the double-sided conveyance path 29 is sequentially brought into contact with and guided by the upstream inclined surface 54b of the convex portion 54 and the downstream inclined surface 55c of the concave portion 55. Finally, the guide wall 53 comes into contact with the peripheral surface (surface) 15aa of the metal roller 15a by the guidance of the end portion 53a that guides the leading edge of the sheet. At this time, the registration roller pair 15 stops rotating. The sheet P in contact with the peripheral surface (surface) 15aa of the metal roller 15a smoothly slides on the peripheral surface (surface) 15aa of the metal roller 15a and is received by the nip portion NP of the registration roller pair 15. The registration roller pair 15 has stopped rotating, but the sheet continues to be conveyed by the duplex conveying roller pair 30 (FIG. 1). Therefore, when the sheet is bent and skewed in the space AR3 (FIG. 2) where the multi-unit path 14B and the double-sided conveyance path 29 merge, the leading edge of the sheet is corrected to the nip portion NP. Then, the sheet is conveyed between the photosensitive drum 18 (FIG. 1) and the transfer roller 17 by the registration roller pair 15 that starts rotating at a predetermined timing.

  In the above description, the end portions 52a and 53a of the guide walls 52 and 53 are the outer peripheries corresponding to the central angle α3 of less than 90 degrees of the metal roller 15a from the nip portion NP of the registration roller pair 15 toward the guide walls 52 and 53. It faces the area. For this reason, since the sheet abuts on this region, the sheet is reliably guided to the nip portion NP.

  As described above, the sheet is finally guided to the end portion 53a of the guide wall 53 regardless of the sheet feeding unit path 14A, the multi-unit path 14B, or the double-sided conveyance path 29, and the metal roller. 15a abuts. Even if the multi-unit path 14B and the double-sided conveyance path 29 are not provided, but only the sheet feeding unit path 14A is provided and the sheet is conveyed in any state, the sheet is shown in FIGS. , (C) is brought into contact with the metal roller 15a by the conveyance guide. This is because the terminal portion 53a of the guide wall 53 extends to a position intersecting with a tangent L1 passing through the upstream end portion 55d of the concave portion 55 in the sheet conveying direction and the top portion 54a of the convex portion 54. This is also because the relations A <B, A <C, A <D, and A <E are set.

  The sheet that first contacts the peripheral surface (surface) 15aa of the metal roller 15a is easily guided by the nip portion NP of the registration roller pair 15 with little slippage due to the slippage of the metal roller 15a. Smoothly skew and straighten on the nip line. If the leading edge of the sheet comes into contact with the peripheral surface (surface) 15ba of the rubber roller 15b, the leading edge of the sheet cannot smoothly slide due to the friction coefficient of the surface 15ba of the rubber roller 15b. It is difficult to be guided to the part NP.

  In this embodiment, the rubber roller 15b having a larger friction coefficient than the metal roller is used as the roller facing the metal roller 15a. However, if the facing roller is not a rubber roller but has a larger friction coefficient than the metal roller 15a, the roller is a metal roller. Even if it exists, this embodiment has the feature. Even if the registration roller pair is composed of a metal roller pair, unless this embodiment is implemented, the position of the leading edge of the sheet contacting the roller is not constant, and the leading edge of the sheet is smooth even if the pair of metal rollers is used. There is a risk that the skew cannot be corrected because the nip cannot be slid. Further, there is a possibility that a desired loop amount cannot be formed as the loop amount when executing the skew correction.

  Further, since the pre-registration sensor 51 is disposed at a position where the sheet is guided and sent out by the terminal end portion 53a of the guide wall 53, variations in timing for starting the rotation of the registration roller pair 15 that has been stopped are reduced. As a result, the sheet is smoothly and straightly corrected with almost no variation in bending.

  As described above, the sheet conveying apparatus 50 according to the present embodiment can easily remove the skew of the sheet by guiding the sheet to the registration roller pair 15 with a simple structure. Further, the copying machine 10 that is the image forming apparatus of the present embodiment forms a sheet conveyed by the sheet conveying apparatus 50 having a simple configuration in the image forming unit, so that the structure can be simplified.

  Note that the sheet conveying apparatus 50 of the present embodiment adjusts (corrects) skew by using the registration roller pair 15 as an adjustment unit. However, the adjustment unit is not limited to this, and the front end of the sheet is pushed. A shutter that can be adjusted by applying the skew may be used. In other words, the adjustment unit only needs to be configured to be able to adjust the conveying state of the sheet by bringing the leading edge of the conveyed sheet into contact.

10: copier (image forming apparatus), 10A: main body of copier (image forming apparatus), 12: paper feed unit, 12e: paper feed unit transport roller pair, 13: multi paper feed unit, 13d: multi transport roller Pair, 14: path before registration (guide path), 14A: paper feed unit path (guide path before joining), 14Aa, 14Ab: guide wall (guide member) of paper feed unit path 14A, 14B: multi-unit path (before joining) 14Ba: 14Bb: guide wall (guide member) of multi-unit path 14B, 14C: junction, 14D: curved portion, 15: registration roller pair (roller pair, adjustment unit), 15a: metal roller (one of 15aa: peripheral surface of the metal roller 15a, 15b: rubber roller (the other roller, a roller having a large friction coefficient), 1 : Photosensitive drum, 24: image reading device, 29: double-sided conveyance path (pre-merging guide path), 29a: guide wall closest to rubber roller 15b, 30: double-sided conveyance roller pair, 31: image forming unit, 50: sheet conveying device 51: pre-registration sensor, 52: guide wall (first guide member) of pre-registration path 14, 52a: terminal portion of guide wall 52, 53: guide wall of pre-registration path 14 (second guide member), 53a: Terminal portion of the guide wall 52, 54: convex portion, 54a: top portion of the convex portion 54, 54b: upstream slope on the upstream side in the sheet conveying direction of the convex portion 54, 54c: downstream slope on the downstream side of the convex portion 54, 55: recessed portion, 55a: bottom portion of recessed portion 55, 55b: upstream inclined surface on the upstream side of the recessed portion 55, 55c: downstream inclined surface on the downstream side of the recessed portion 55, 55d: upstream end portion of the recessed portion 55, AR1: space of the pre-registration path 14 ,
AR2: space of the multi-unit path 14B, AR3: space where the multi-unit path 14B and the double-sided conveyance path 29 merge, L1: tangent line passing through the upstream end 55d of the concave portion 55 and the top portion 54a of the convex portion 54, L2: convex An extension line of the upstream slope 54b on the upstream side of the section 54, L3: an extension line of the guide wall 29a of the double-sided conveyance path 29, α1: an angle formed by the extension line L2 of the upstream slope 54b and the downstream slope 55c, α2: a guide wall 29a The angle formed by the extended line L3 of the upper surface and the upstream slope 55b, A: the distance between the end portions 52a and 53a of the guide walls 52 and 53, B: the height of the convex portion 54, C: the depth of the concave portion 55, D: the concave portion 55, the distance between the convex portion 54, E: the distance between the guide wall 52 and the guide wall 29a at the junction 14C, and P: the sheet.

Claims (12)

An adjustment unit that adjusts the conveyance state of the sheet by bringing the leading edge of the conveyed sheet into contact with the sheet
Located on the upstream side of the adjustment unit in the sheet conveyance direction, guides a sheet conveyed between a first guide member having a concave portion and a second guide member having a convex portion facing the concave portion. A guide path that guides the sheet conveyed without passing through the convex part and the sheet conveyed without passing through the convex part so that the tip comes into contact with the adjustment unit by the concave part,
A sheet conveying apparatus. The position where the sheet conveyed through the convex part and the sheet conveyed without going through the convex part are guided by the concave part and the tip abuts on the adjustment unit is the same position.
The sheet conveying apparatus according to claim 1. The adjustment unit is a pair of rollers that pinch and rotate and convey the sheet, and the leading edge of the sheet guided by the guide path first contacts the surface of one roller of the roller pair that has stopped rotating. ,
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is a sheet conveying apparatus. The roller pair is composed of a pair of rollers having different friction coefficients, and the one roller has a smaller friction coefficient than the other roller.
The sheet conveying apparatus according to claim 3. The guide path is connected by joining a plurality of pre-merging guide paths on the upstream side in the sheet conveying direction.
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is a sheet conveying apparatus. The sheet whose tip is in contact with the adjustment unit is formed with a loop inside the guide path.
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is a sheet conveying apparatus. The angle formed by the extension line of the slope on the upstream side in the sheet conveyance direction of the convex part and the slope on the downstream side in the sheet conveyance direction of the concave part is set to an acute angle.
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is a sheet conveying apparatus. An angle formed by the extension line of the guide member closest to the roller having the large friction coefficient and the inclined surface on the upstream side of the convex portion among the guide members of the plurality of pre-merging guide paths is set to an acute angle. ,
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is a sheet conveying apparatus. The distance between the end portions of the pair of guide members of the guide path is narrower than the distance between the concave portion and the convex portion.
The sheet conveying apparatus according to claim 1, wherein the sheet conveying apparatus is a sheet conveying apparatus. The distance between the end portions of the pair of guide members of the guide path is narrower than the distance between the pair of guide members of the guide path at a junction where a plurality of the guide paths before joining meet.
The sheet conveying apparatus according to claim 8. The roller having a small coefficient of friction is a metal roller, and the roller having a large coefficient of friction is a roller having elasticity.
The sheet conveying apparatus according to claim 8. A sheet conveying device according to any one of claims 1 to 11,
An image forming unit that forms an image on a sheet conveyed by the sheet conveying device;
The adjustment unit of the sheet conveying apparatus is a pair of registration rollers.
An image forming apparatus.

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