JP4758398B2 - Sheet body supply device with locking mechanism - Google Patents

Description

  The present invention relates to a sheet supply device with a lock mechanism.

  Conventionally, the print quality of an image forming apparatus is low, and when an image such as a photograph is printed by such an image forming apparatus, the difference from the silver salt photographic system is clear. Therefore, generally, images such as photographs are not printed in the image forming apparatus.

  In recent years, the print quality of image forming apparatuses has been improved by increasing the resolution. The resolution of image forming apparatuses has been increased from 300 dpi, which has been the mainstream in the past, to 1,200 dpi at present. As the image forming apparatus becomes higher in resolution as described above, there is an increasing demand for printing an image such as a photograph with the image forming apparatus.

  Coated paper is used for printing images such as photographs. The coated paper is a surface-coated paper. By using such coated paper, a clear image can be obtained. Coated paper is commercially available as expensive paper compared to plain paper.

  When printing using such expensive paper, in order to avoid waste of paper, generally, a necessary number of sheets are stacked on a manual feed tray mounted on the side of the image forming apparatus. Print. When printing is performed in this manner, when a large number of images such as photographs are printed and when images such as photographs are frequently printed, the frequency of replenishing paper to the manual feed tray is increased, and paper replenishment work is troublesome.

  Therefore, it is conceivable that the sheet supply device is mounted on the side portion of the image forming apparatus instead of the manual feed tray in response to a user request. The sheet supply device is used as a paper feeding device dedicated to coated paper. The sheet body supply device accommodates coated paper that is a sheet body and supplies the coated paper one by one to the image forming apparatus.

  In recent years, a paper feed cassette, which is a cassette unit that accommodates paper sheets, is provided with a lock mechanism that restricts the opening and closing of the paper feed cassette, thereby managing the paper stored in the paper feed cassette. . For example, Patent Document 1 discloses a paper feeding device that has a plurality of paper feeding cassettes and can lock another paper feeding cassette by locking one paper feeding cassette. Japanese Patent Application Laid-Open No. 2004-260688 has an image forming system that includes a plurality of paper feed cassettes, each of which is provided with a lock unit, and the lock unit can be locked and unlocked for each paper feed cassette. An apparatus is disclosed. With the techniques disclosed in Patent Documents 1 and 2, it is possible to prevent undesired loading and unloading of paper with respect to the paper feed cassette.

JP 2004-292144 A JP 2001-265172 A

  In the case of the manual feed tray, it is easy to put in and out the sheet body and remove the jammed sheet body. On the other hand, in the case of the sheet body supply apparatus, the sheet body accommodation space and the sheet body conveyance path are not exposed to the outside, so that it is difficult to take in and out the sheet body and remove the jammed sheet body.

  In the techniques disclosed in Patent Documents 1 and 2, a paper feeder having a front access structure disposed under the image forming apparatus is assumed, and the paper tray is mounted on the side of the image forming apparatus instead of the manual feed tray. A sheet supply device is not assumed. When the techniques disclosed in Patent Documents 1 and 2 are applied to the sheet body supply apparatus, it is possible to prevent the sheet body from being undesirably inserted / removed, but it is possible to prevent the sheet body from being inserted / removed and a jammed sheet body Removal cannot be facilitated.

  It is an object of the present invention to be installed on the side of an image forming apparatus and prevent undesired loading and unloading of a sheet body in a locked state. It is an object of the present invention to provide a sheet supply device with a lock mechanism that can be easily removed.

The present invention provides a base provided on a side portion of an image forming apparatus that forms an image on a sheet body,
A movable base provided on the base so as to be slidable in a direction approaching and separating from the side part;
A cassette portion that is provided on the movable base and accommodates a sheet body on which an image is to be formed by the image forming apparatus, and is formed with a loading / unloading port for loading / unloading the sheet body, and a portion near the side portion A cassette portion that is angularly displaceable about a horizontal angular displacement axis perpendicular to the sliding direction of the movable table relative to the side portion ;
A conveyance unit that is slidably displaceable together with the movable table, and conveys the sheet members stored in the cassette unit one by one to the image forming apparatus;
It is configured to be switchable between a locked state in which the slide displacement of the movable table with respect to the side portion is blocked at a position where the sheet body can be conveyed by the conveyance unit and a unlocked state in which the slide displacement of the movable table with respect to the side portion is allowed. Movable table lock mechanism;
A cover portion that covers the cassette slot in an openable and closable manner;
A cover part locking mechanism configured to be switchable between a locked state that prevents the cover part from being opened and a unlocked state that allows the cover part to be opened ; and
Switchable between a locked state in which the angular displacement of the cassette portion relative to the movable base is blocked at a position where the sheet can be conveyed by the conveying portion, and a unlocked state in which the angular displacement of the cassette portion relative to the movable base is allowed. It is a sheet body supply device with a lock mechanism including a cassette part lock mechanism configured .

  In the invention, it is preferable that the cassette part locking mechanism includes an engaging part provided on the movable base and an engaged part provided on the cassette part and engaged with the engaging part. .

In the present invention, the cassette unit locking mechanism is
An electromagnetic drive source that is provided on the movable table and that drives the engagement portion by a driving force by an electromagnetic force;
It is provided to be isolated from the outside.

  Further, the present invention is characterized in that the cover part locking mechanism is interlocked with the cassette part locking mechanism.

  Further, the present invention is characterized in that the movable table locking mechanism is configured to be able to switch a state by an angular displacement of the cassette unit.

  In the invention, it is preferable that the movable table locking mechanism includes an engaging portion provided in the cassette portion and an engaged portion provided in the side portion and engaged with the engaging portion. .

In the present invention, the transport unit includes a pair of rollers that are vertically paired with respect to a transport path through which the sheet body is transported, and at least one of the rollers is rotationally driven.
The rollers of the roller pair are separated from each other when the cassette unit is angularly displaced from a position where the sheet can be conveyed by the conveying unit.

  In the invention, it is preferable that the roller pair includes a movable table side roller provided on the movable table and a cassette unit side roller provided on the cassette unit.

  The present invention is characterized in that a slide mechanism for slidingly moving the movable table relative to the base is provided between the base and the movable table.

In the invention, it is preferable that the slide mechanism is configured such that a plurality of slide members are slidably connected to each other via a large number of balls held by a ball retainer.
In the invention, it is preferable that the sheet body is a coated paper.

  According to the present invention, the base is provided on the side of the image forming apparatus. A movable base is provided on the base. The movable base is provided with a cassette portion. The cassette unit accommodates a sheet body on which an image is to be formed by the image forming apparatus. The sheet members accommodated in the cassette unit are conveyed to the image forming apparatus one by one by the conveying unit, and an image is formed by the image forming apparatus.

  The movable base is provided on the base so as to be slidable and displaceable in a direction approaching and separating from the side portion. The movable table locking mechanism is in a locked state in which the slide displacement of the movable table relative to the side portion is blocked at a position where the sheet body can be conveyed by the conveyance unit, and in an unlocked state in which the slide displacement of the movable table relative to the side portion is allowed. It is configured to be switchable. In the locked state, the sheet body can be reliably conveyed by the conveyance unit. In the unlocked state, the movable table can be slid and the conveyance unit can be slid along with the movable table to open the downstream side of the conveyance unit in the conveyance direction. It can be easily removed from the downstream side in the conveying direction of the part.

The cassette portion is formed with a slot. A sheet body is inserted into and removed from the cassette portion through the loading / unloading port. The entrance / exit of the cassette part is covered with a cover part so as to be opened and closed. The cover part locking mechanism is configured to be switchable between a locked state that prevents the cover part from being opened and an unlocked state that allows the cover part to be opened. In the locked state, it is possible to prevent the sheet body from being undesirably inserted / removed through the loading / unloading opening of the cassette unit. In the unlocked state, the cover part can be opened, and thereby the sheet body can be taken in and out through the aforementioned inlet / outlet of the cassette part without taking out the cassette part.
Further, the cassette portion is provided on the movable base so that a portion near the side portion can be angularly displaced about a horizontal angular displacement axis perpendicular to the sliding direction of the movable base with respect to the side portion. The cassette part locking mechanism can be switched between a locked state that prevents angular displacement of the cassette part relative to the movable base at a position where the sheet can be conveyed by the conveying part, and an unlocked state that allows angular displacement of the cassette part relative to the movable base. Configured. In the locked state, the sheet body can be reliably conveyed by the conveyance unit. In the unlocked state, the cassette unit can be angularly displaced to open the upstream side in the transport direction of the transport unit, thereby easily removing the sheet body jammed in the transport unit from the upstream side in the transport direction of the transport unit. be able to.

  According to the invention, in the cassette part locking mechanism, the movable part is provided with the engaging part, and the cassette part is provided with the engaged part. A state where the engaging portion is engaged with the engaged portion is a locked state, and a state where the engagement between the engaging portion and the engaged portion is released is a unlocked state. In the present invention, the cassette part locking mechanism can be realized with a simple configuration.

  According to the invention, the movable table is provided with an electromagnetic drive source. The electromagnetic drive source can drive the engaging portion with a driving force generated by an electromagnetic force, thereby switching the state of the cassette portion locking mechanism. Since the cassette part locking mechanism having such an electromagnetic drive source is provided so as to be isolated from the outside, it is possible to prevent the state of the cassette part locking mechanism from being undesirably switched by a finger or the like.

  Further, according to the present invention, since the cover portion locking mechanism and the cassette portion locking mechanism are interlocked, it is not necessary to separately perform unlocking of the cover portion locking mechanism and unlocking of the cassette portion locking mechanism. It is possible to reduce the effort required to release the lock.

  Further, according to the present invention, the movable table locking mechanism is configured to be switchable by the angular displacement of the cassette portion, so that the state of the movable table locking mechanism can be easily switched.

  According to the invention, the movable table locking mechanism is provided with the engaging portion in the cassette portion and the engaged portion on the side portion. A state where the engaging portion is engaged with the engaged portion is a locked state, and a state where the engagement between the engaging portion and the engaged portion is released is a unlocked state. In the present invention as described above, the movable table locking mechanism can be realized with a simple configuration.

  Moreover, according to this invention, a conveyance part has a roller pair. The roller pair is paired up and down with respect to the conveyance path through which the sheet member is conveyed, and at least one of the rollers is rotationally driven. The sheet body can be conveyed by sandwiching the sheet body by such a pair of rollers and rotationally driving at least one of the rollers.

  The rollers of the roller pair are separated from each other when the cassette unit is angularly displaced from a position where the sheet can be conveyed by the conveying unit. As a result, the holding of the sheet body by the roller pair is released.

  Therefore, when removing the sheet member jammed in the conveying unit, the sheet member can be smoothly pulled out from the roller pair, and the workability for removing the sheet member can be improved. Further, when the sheet body is pulled out, a large load is not applied to the roller pair, and therefore it is possible to prevent the pressure applied to the roller pair from changing. Furthermore, when pulling out the sheet body, a large tensile force does not act on the sheet body, and therefore, it is possible to prevent the sheet body from being broken and a part of the sheet body from remaining in the transport unit.

  According to the invention, the roller pair includes a movable table side roller and a cassette unit side roller. The movable table side roller is provided on the movable table, and the cassette unit side roller is provided on the cassette unit. Therefore, when the cassette unit is angularly displaced from a position where the sheet can be conveyed by the conveying unit, the rollers of the roller pair are separated from each other. In the present invention, such a roller pair can be realized with a simple configuration.

  Further, according to the present invention, a slide mechanism is provided between the base and the movable base to slide the movable base relative to the base, so that the movable base can be smoothly displaced relative to the base. Can be made.

  Further, according to the present invention, a plurality of slide members are connected to each other so as to be slidable via a large number of balls held by a ball retainer to constitute a slide mechanism. Since such a slide mechanism is provided between the base and the movable base, the movable base can be slid and displaced more smoothly with respect to the base.

  According to the present invention, coated paper is used as the sheet body. The sheet supply device with a lock mechanism of the present invention can be used as a paper feeding device dedicated to coated paper.

  FIG. 1 is a cross-sectional view illustrating a configuration of a sheet supply device 1 with a lock mechanism according to an embodiment of the present invention. A sheet supply device with a lock mechanism (hereinafter simply referred to as “sheet supply device”) 1 according to the present embodiment is installed on the side of an image forming apparatus 2 that forms an image on a sheet. The sheet body supply device 1 is used to supply the sheet bodies on which images are to be formed by the image forming apparatus 2 to the image forming apparatus 2 one by one. In the present embodiment, the sheet body is coated paper, and the sheet body supply apparatus 1 is used as a paper feeding device 142 dedicated to coated paper.

  The sheet supply apparatus 1 is installed as an option in the image forming apparatus 2. The image forming apparatus 2 is equipped with a manual feed tray 101 (see FIG. 10) as standard. The sheet supply apparatus 1 is attached to the side portion 11 of the image forming apparatus 2 instead of the manual feed tray 101. The user can selectively attach the manual feed tray 101 and the sheet supply apparatus 1 to the side portion 11 of the image forming apparatus 2 as necessary.

  The sheet supply apparatus 1 includes a base 3, a movable base 4, a cassette unit 5, a transport unit 6, a cover unit 7, a cassette unit locking mechanism 8, a cover unit locking mechanism 9, and a movable table locking mechanism. 10 and the like.

  The base 3 is provided on the side portion 11 of the image forming apparatus 2. The movable table 4 is provided on the base 3 so as to be slidable in a direction A that approaches and separates from the side portion 11. In the present embodiment, the sliding direction A of the movable table 4 with respect to the side portion 11 is a horizontal direction with respect to the installation surface on which the image forming apparatus 2 is installed. The movable table 4 is slidable over a proximity position close to the side portion 11 and a separation position separated from the side portion 11.

  Between the base 3 and the movable base 4, a slide mechanism 12 for slidably moving the movable base 4 with respect to the base 3 is provided. Accordingly, the movable table 4 can be smoothly slid and displaced with respect to the base 3. The slide mechanism 12 is configured by a plurality of slide members coupled to each other so as to be slidable through a plurality of balls held by a ball retainer. Since such a slide mechanism 12 is provided between the base 3 and the movable base 4, the movable base 4 can be slid and displaced more smoothly with respect to the base 3.

  The cassette unit 5 accommodates a sheet body on which an image is to be formed by the image forming apparatus 2. The cassette portion 5 is formed with an accommodation space 15 for accommodating the sheet body. Although not shown in the drawings, the accommodation space 15 includes a front end pressing plate that presses the front end of the sheet body, a rear end pressing plate that presses the rear end of the sheet body, and a pair of side end pressing plates that respectively press both side ends of the sheet body. Provided. The accommodation space 15 is further provided with a stacking plate or the like for raising the sheet body to a predetermined supply position in the accommodation space 15. In such a cassette portion 5, a loading / unloading port 16 for loading / unloading the sheet member is formed. The entrance / exit 16 is opened facing upward.

  The cassette unit 5 is provided on the movable table 4 such that a portion 17 near the side unit 11 can be angularly displaced about a horizontal angular displacement axis L11 perpendicular to the sliding direction A of the movable table 4 with respect to the side unit 11. It is done. The cassette unit 5 is angularly displaceable across a horizontal position arranged horizontally with respect to the installation surface and an inclined position arranged inclined with respect to the installation surface. In the inclined position, the portion 18 farther from the side portion 11 is lowered than in the horizontal position.

  The transport unit 6 transports the sheet members stored in the cassette unit 5 to the image forming apparatus 2 one by one. Such a conveyance part 6 is provided with the movable stand 4 so that a slide displacement is possible. The conveyance unit 6 includes a pickup part 21, a separation part 22 provided on the downstream side in the conveyance direction from the pickup part 21, and a conveyance part 23 provided on the downstream side in the conveyance direction from the separation part 22.

  The pickup portion 21 takes out the sheet bodies stored in the cassette unit 5 one by one and conveys them to the separation portion 22. The pickup portion 21 has a pickup roller 24 that is driven to rotate about a rotation axis parallel to the width direction perpendicular to the conveyance path through which the sheet member is conveyed. The pickup roller 24 is displaced over a contact position that contacts the uppermost sheet member accommodated in the cassette unit 5 and a retracted position that retracts above the contact position. By rotating and driving such a pickup roller 24 in a state of being displaced to the contact position, the uppermost sheet body accommodated in the cassette unit 5 can be conveyed to the separation portion 22.

  The separation part 22 separates the sheet body conveyed from the pickup part 21 and conveys it to the conveyance part 23. The separation part 22 has a pair of separation rollers which are paired up and down with respect to the conveyance path and are a roller pair in which at least one of the rollers is rotationally driven. The sheet member can be conveyed by sandwiching the sheet member by such a pair of separation rollers and rotationally driving at least one of the rollers.

  The separation roller pair includes a drive roller 26 that is driven to rotate about a rotation axis parallel to the width direction perpendicular to the conveyance path, and a driven roller 27 that is provided to be rotatable about a rotation axis parallel to the axis of the drive roller 26. Have. The driven roller 27 is provided with a torque limiter, for example. This torque limiter stops the rotation of the driven roller 27 when the torque of the driven roller 27 increases when a plurality of sheets, for example, two sheets, enter between the driving roller 26 and the driven roller 27 at the same time. Let As a result, the sheet member in contact with the driving roller 26 receives the conveying force from the driving roller 26, and the sheet member in contact with the driven roller 27 slides in the direction opposite to the conveying force from the driven roller 27. Receive resistance. In this way, only the sheet that is in contact with the drive roller 26 can be conveyed to the conveying portion 23.

  The driving roller 26 of the separation roller pair is a movable table side roller provided on the movable table 4. The driven roller 27 of the separation roller pair is a cassette unit side roller provided in the cassette unit 5. When the cassette unit 5 is in the horizontal position, the drive roller 26 and the driven roller 27 elastically contact each other so as to sandwich the sheet member. When the cassette unit 5 is in the inclined position, the driving roller 26 and the driven roller 27 are separated from each other. Thus, when the cassette unit 5 is angularly displaced from the horizontal position where the sheet unit can be conveyed by the conveying unit 6, the rollers 26 and 27 of the separating roller pair are separated from each other. In this embodiment, such a separation roller pair can be realized with a simple configuration.

  The conveyance portion 23 applies a conveyance force to the sheet body conveyed from the separation portion 22, and conveys the sheet body downstream in the conveyance direction from the conveyance portion 23. The transport portion 23 has a pair of transport rollers that are paired up and down with respect to the transport path and that are at least one of which is rotationally driven. The sheet body can be transported by sandwiching the sheet body by such a pair of transport rollers and rotationally driving at least one of the rollers.

  The transport roller pair includes a drive roller 28 that is driven to rotate about a rotation axis parallel to the width direction of the transport path, and a driven roller 29 that is rotatably provided about a rotation axis parallel to the axis of the drive roller 28. In the present embodiment, the rollers 28 and 29 of the conveying roller pair are provided on the movable table 4. The driving roller 28 and the driven roller 29 elastically contact each other so as to sandwich the sheet member.

  The cover part 7 covers the said slot 16 of the cassette part 5 so that opening and closing is possible. The cover portion 7 includes a facing portion 31 that faces the loading / unloading port 16, a base portion 32, and a connecting portion 33 that connects the facing portion 31 and the base portion 32. In a state where the access port 16 is closed by the cover portion 7, the base portion 32 is located directly above the portion 35 of the facing portion 31 on the side close to the side portion 11. The base 32 is provided on the movable base 4 so as to be angularly displaceable around an angular displacement axis L12 parallel to the angular displacement axis L11 of the cassette unit 5. A portion 34 of the connecting portion 33 opposite to the side connected to the base portion 32 is connected to a portion 35 of the facing portion 31 on the side close to the side portion 11.

  When the cover portion 7 is angularly displaced, the loading / unloading port 16 of the cassette portion 5 is opened and closed. The cover portion 7 is angularly displaceable over a closed position where the entrance / exit 16 is closed and an open position where the entrance / exit 16 is opened. When the cover portion 7 is in the closed position, it is impossible to insert and remove the sheet body with respect to the cassette portion 5 through the insertion / removal port 16. When the cover part 7 is in the open position, the sheet body can be taken in and out of the cassette part 5 through the taking in / out opening 16.

  FIG. 2 is an enlarged cross-sectional view showing the cassette portion locking mechanism 8 and the cover portion locking mechanism 9. Referring also to FIG. 1, the cassette portion locking mechanism 8 and the cover portion locking mechanism 9 are provided on the opposite side of the side portion 11 with respect to the angular displacement axis L <b> 11 of the cassette portion 5. The cassette part lock mechanism 8 and the cover part lock mechanism 9 may be provided on both sides in the width direction of the transport path, or may be provided only on one side in the width direction of the transport path.

  The cassette portion locking mechanism 8 is configured to be switchable between a locked state and an unlocked state. In the locked state, the angular displacement of the cassette unit 5 with respect to the movable table 4 can be prevented at the horizontal position, which is a position where the conveyance unit 6 can convey the sheet body. In the unlocked state, angular displacement of the cassette unit 5 with respect to the movable table 4 can be allowed.

  The cassette part locking mechanism 8 includes an engaging part 41 provided on the movable table 4 and an engaged part 42 provided on the cassette part 5 and engaged with the engaging part 41. The engaged portion 42 is disposed in the accommodation space 15. The state where the engaging part 41 is engaged with the engaged part 42 is a locked state, and the state where the engagement between the engaging part 41 and the engaged part 42 is released is a unlocked state. In this embodiment, the cassette portion locking mechanism 8 can be realized with a simple configuration.

  The engaging portion 41 includes a base portion 43 that is disposed above the cassette portion 5 and a claw portion 44 that is continuous below the base portion 43. The base 43 is provided on the movable base 4 so as to be angularly displaceable around an angular displacement axis L13 parallel to the angular displacement axis L11 of the cassette unit 5. The engaged portion 42 is fixed to the cassette portion 5. The engaged portion 42 is formed with an engagement hole 45 into which the claw portion 44 of the engagement portion 41 is fitted.

  The engaging portion 41 can be angularly displaced over the lock position P11 and the lock release position P12. At the lock position P11, the claw portion 44 of the engaging portion 41 is fitted into the engaging hole 45 of the engaged portion 42, whereby the engaging portion 41 is engaged with the engaged portion 42. At the unlocked position, the claw portion 44 of the engaging portion 41 is disengaged from the engaging hole 45 of the engaged portion 42, thereby releasing the engagement between the engaging portion 41 and the engaged portion 42.

  An operating piece 46 is further provided on the base 43 of the engaging portion 41. The operation piece 46 is exposed to the outside. The user can switch the state of the cassette lock mechanism 8 by operating the operation piece 46 to angularly displace the engaging portion 41.

  The cover portion locking mechanism 9 is configured to be switchable between a locked state and an unlocked state. In the locked state, the angular displacement of the cover part 7 with respect to the movable base 4 can be prevented at the closed position, and the cover part 7 can be prevented from being opened. In the unlocked state, the cover portion 7 can be opened by allowing angular displacement of the cover portion 7 with respect to the movable base 4.

  The cover portion locking mechanism 9 includes an engaging portion 51 provided on the movable base 4 and an engaged portion 52 provided on the cover portion 7 and engaged with the engaging portion 51. The state in which the engaging portion 51 is engaged with the engaged portion 52 is the locked state, and the state in which the engagement between the engaging portion 51 and the engaged portion 52 is released is the unlocked state. In this embodiment, the cover portion lock mechanism 9 can be realized with a simple configuration.

  The engaging portion 51 includes a base portion 53 disposed above the cassette portion 5 and a claw portion 54 that extends to the side of the base portion 53. The base 53 is provided on the movable base 4 so as to be angularly displaceable about an angular displacement axis L14 parallel to the angular displacement axis L11 of the cassette unit 5. The engaged portion 52 is connected to the cassette portion 5 and has a claw portion 55 to which the claw portion 54 of the engaging portion 51 is engaged. The claw portion 55 is continuous with the portion 35 on the side close to the side portion 11 of the facing portion 31 of the cassette portion 5.

  The engaging portion 51 can be angularly displaced over the lock position P21 and the lock release position P22. At the lock position P <b> 21, the claw portion 54 of the engaging portion 51 is engaged with the claw portion 55 of the engaged portion 52, and thereby the engaging portion 51 is engaged with the engaged portion 52. At the unlocking position P22, the engagement between the claw portion 54 of the engaging portion 51 and the claw portion 55 of the engaged portion 52 is released, and thereby the engagement between the engaging portion 51 and the engaged portion 52 is released. Is done.

  In the present embodiment, the angular displacement axis L13 of the engaging portion 41 of the cassette portion locking mechanism 8 and the angular displacement axis L14 of the engaging portion 51 of the cover portion locking mechanism 9 form a common straight line, and the cassette portion locking mechanism. The base portion 43 of the eight engaging portions 41 and the base portion 53 of the engaging portion 51 of the cover portion locking mechanism 9 are common. Therefore, the cassette portion locking mechanism 8 and the cover portion locking mechanism 9 are interlocked. As a result, it is not necessary to perform the unlocking of the cassette part locking mechanism 8 and the unlocking of the cover part locking mechanism 9 separately, and the labor required to unlock the locking mechanisms 8 and 9 can be reduced.

  FIG. 3 is an enlarged cross-sectional view of the movable table locking mechanism 10. Referring also to FIG. 1, the movable table locking mechanism 10 is provided on the same side as the side portion 11 with respect to the angular displacement axis L <b> 11 of the cassette portion 5. The movable table locking mechanism 10 may be provided on both sides in the width direction of the transport path, or may be provided in the center in the width direction of the transport path.

  The movable table locking mechanism 10 is configured to be switchable between a locked state and an unlocked state. In the locked state, the slide displacement of the movable table 4 with respect to the side portion 11 can be prevented at a proximity position where the sheet body can be conveyed by the conveying unit 6. In the unlocked state, the slide displacement of the movable table 4 relative to the side portion 11 can be allowed.

  The movable table locking mechanism 10 includes an engaging portion 61 provided in the cassette portion 5 and an engaged portion 62 provided in the side portion 11 and engaged with the engaging portion 61. The state where the engaging part 61 is engaged with the engaged part 62 is a locked state, and the state where the engagement between the engaging part 61 and the engaged part 62 is released is the unlocked state. In this embodiment, the movable table locking mechanism 10 can be realized with a simple configuration.

  The engaging portion 61 includes a base portion 63 and a claw portion 64 that is continuous with the base portion 63. The base portion 63 is fixed to the portion 17 of the cassette portion 5 on the side close to the side portion 11. The engaged portion 62 is formed with an engagement hole 65 into which the claw portion 64 of the engagement portion 61 is fitted.

  The movable table locking mechanism 10 is configured to be able to switch the state by the angular displacement of the cassette unit 5. Therefore, the state of the movable table lock mechanism 10 can be easily switched. When the cassette part 5 is in the horizontal position, the claw part 64 of the engaging part 61 fits into the engaging hole 65 of the engaged part 62, and thereby the engaging part 61 engages with the engaged part 62. . When the cassette is in the inclined position, the engaging claw portion 64 is disengaged from the engaging hole 65 of the engaged portion 62, whereby the engagement between the engaging portion 61 and the engaged portion 62 is released.

  Referring again to FIG. 1, in a use state where the sheet body can be supplied to the image forming apparatus 2, the movable base 4 is disposed at the close position, the cassette section 5 is disposed at the horizontal position, and the cover section 7. Is placed in the closed position. Each of the lock mechanisms 8 to 10 is in a locked state.

  In such a use state, the cassette unit locking mechanism 8 prevents the angular displacement of the cassette unit 5 with respect to the movable table 4 at a horizontal position, and the movable table locking mechanism 10 slides the movable table 4 with respect to the side portion 11. Displacement is blocked at the proximity position. Accordingly, the sheet body can be reliably conveyed by the conveyance unit 6.

  In use, the cover portion lock mechanism 9 prevents the angular displacement of the cover portion 7 relative to the movable base 4 at the closed position. Therefore, it is possible to prevent the sheet body from being undesirably inserted / removed through the loading / unloading port 16 of the cassette unit 5. As a result, only the administrator among the users can make it possible to insert and remove the sheet body with respect to the cassette unit 5. Therefore, it is possible to prevent plain paper from being erroneously put into the cassette unit 5 by a user other than the administrator even though the coated paper should be accommodated.

  FIG. 4 is a diagram for explaining a change in the state of the cassette unit 5 relating to the opening of the loading / unloading port 16, and FIG. 4 (1) locks the cassette unit locking mechanism 8 and the cover unit locking mechanism 9 from the locked state. FIG. 4 (2) shows a state in which the loading / unloading port 16 of the cassette unit 5 is opened. In order to load and unload the sheet body with respect to the cassette unit 5 through the loading / unloading port 16, it is necessary to open the loading / unloading port 16.

  In opening the loading / unloading port 16, first, the user operates the operation piece 46 to unlock the engaging portion 41 of the cassette portion locking mechanism 8 from the lock position P11 as shown in FIG. Angularly displaced to position P12. As a result, the cassette portion locking mechanism 8 releases the engagement between the engaging portion 41 and the engaged portion 42. In this way, the cassette lock mechanism 8 is changed from the locked state to the unlocked state.

  At this time, the engaging portion 51 of the cover portion lock mechanism 9 is also angularly displaced from the lock position P21 to the lock release position P22. As a result, the cover portion locking mechanism 9 releases the engagement between the engaging portion 51 and the engaged portion 52. In this way, the cover portion locking mechanism 9 is also moved from the locked state to the unlocked state in conjunction with the cassette portion locking mechanism 8.

  Next, the user operates the cover part 7 to angularly displace the cover part 7 from the closed position P31 to the open position P32 as shown in FIG. 4 (2). In this way, the entrance / exit 16 can be opened. As a result, the sheet body can be taken in and out through the loading / unloading port 16 of the cassette portion 5 without taking out the cassette portion 5.

  FIG. 5 is a diagram for explaining a change in the state related to opening of both sides in the transport direction of the transport unit 6, and FIG. 5 (1) shows a state in which the upstream side in the transport direction of the transport unit 6 is opened. (2) shows a state in which the downstream side in the transport direction of the transport unit 6 is opened. In order to remove the sheet member jammed in the transport unit 6, it is necessary to open the upstream side in the transport direction of the transport unit 6 or the downstream side in the transport direction of the transport unit 6. When opening both sides of the transport unit 6 in the transport direction, first, the user changes the state as shown in FIG.

  Thereafter, the user operates the cassette unit 5 to angularly displace the cassette unit 5 from the horizontal position to the inclined position as shown in FIG. In this way, the upstream side in the transport direction of the transport unit 6 can be opened. As a result, the sheet body jammed in the transport unit 6 can be easily removed from the upstream side of the transport unit 6 in the transport direction.

  In addition, in the present embodiment, when the cassette unit 5 is angularly displaced from the horizontal position to the inclined position, the separation portions 22 of the conveyance unit 6 are separated from the rollers 26 and 27 of the separation roller pair. As a result, the holding of the sheet member by the pair of separation rollers is released.

  Therefore, the sheet body can be smoothly pulled out from the pair of separation rollers when the sheet body jammed in the conveyance unit 6 is removed. Thereby, the workability for removing the sheet body can be improved. Further, it is possible to prevent the rollers 26 and 27 of the separation roller pair from being damaged.

  Further, when the sheet body is pulled out, a large load is not applied to the separation roller pair, and therefore it is possible to prevent the pressure applied to the separation roller pair from changing. As a result, a change in the pressure balance between the pair of separation rollers and the pair of conveyance rollers can be prevented, and trouble during the next conveyance can be prevented.

  Further, when the sheet body is pulled out, a large tensile force does not act on the sheet body, and therefore, it is possible to prevent the sheet body from being broken and a part of the sheet body from remaining in the transport unit 6. If a part of the sheet remaining in the transport unit 6 is transported to the image forming apparatus 2 during the next transport, a problem may occur in the image forming apparatus 2. In the present embodiment, such a problem can be prevented from occurring.

  When the cassette unit 5 is angularly displaced from the horizontal position to the inclined position, the movable base locking mechanism 10 is disengaged from the engaging portion 61 and the engaged portion 62. In this way, the movable base locking mechanism 10 is changed from the locked state to the unlocked state.

  Next, the user operates the movable table 4 to slide the movable table 4 from the proximity position to the separation position as shown in FIG. In this way, the downstream side in the transport direction of the transport unit 6 can be opened. As a result, the sheet body jammed in the transport unit 6 can be easily removed from the downstream side of the transport unit 6 in the transport direction.

  FIG. 6 is a cross-sectional view showing a simplified configuration of a sheet supply device 71 with a lock mechanism that is another embodiment of the present invention. Since the sheet supply device with a lock mechanism (hereinafter simply referred to as “sheet supply device”) 71 according to the present embodiment is similar to the sheet supply device 1 according to the above-described embodiment, the corresponding parts are the same. A description will be omitted with reference numerals, and only different points will be described.

  In the present embodiment, the cassette portion locking mechanism 8X is provided so as to be covered with the movable portion 4 and separated from the outside. The cassette lock mechanism 8X further includes an electromagnetic solenoid 72 that is an electromagnetic drive source. The electromagnetic solenoid 72 is provided on the movable table 4 and drives the engaging portion 41 with a driving force by an electromagnetic force. The electromagnetic solenoid 72 has a movable iron core 73, and this movable iron core 73 is provided so that it can move forward or backward. The distal end portion of the movable iron core 73 is connected to the operation piece 46 of the engaging portion 41.

  According to the present embodiment as described above, the electromagnetic solenoid 72 can drive the engaging portion 41 by the driving force due to the electromagnetic force, thereby switching the state of the cassette portion locking mechanism 8X. Since the cassette part locking mechanism 8X having such an electromagnetic solenoid 72 is provided so as to be isolated from the outside, it is possible to prevent the state of the cassette part locking mechanism 8X from being undesirably switched by a finger or the like.

  In the present embodiment, the driving roller 28 </ b> X of the conveying roller pair is a movable table side roller provided on the movable table 4, and the driven roller 29 </ b> X of the conveying roller pair is a cassette unit side roller provided on the cassette unit 5. . When the cassette unit 5 is in the horizontal position, the driving roller 28X and the driven roller 29X elastically contact each other so as to sandwich the sheet member. When the cassette unit 5 is in the inclined position, the driving roller 28X and the driven roller 29X are separated from each other. Thus, when the cassette unit 5 is angularly displaced from the horizontal position where the sheet unit can be conveyed by the conveyance unit 6, the rollers 28X and 29X of the conveyance roller pair are separated from each other. In the present embodiment, such a pair of conveying rollers can be realized with a simple configuration.

  FIG. 7 is a block diagram showing an electrical configuration of the cassette portion locking mechanism 8. A lock release command is input to the input operation unit 75. The control unit 76 energizes the electromagnetic solenoid 72 in response to the lock release command input from the input operation unit 75.

  FIG. 8 is a diagram for explaining a change in the state of the cassette unit 5 relating to the opening of the loading / unloading port 16, and FIG. FIG. 8 (2) shows a state in which the loading / unloading port 16 of the cassette unit 5 is opened. Since FIG. 8 is similar to FIG. 4, description of common points is omitted, and only different points are described.

  In the present embodiment, the user does not operate the operation piece 46 but operates the input operation unit 75. The user operates the input operation unit 75 to input a lock release command. The control unit 76 energizes the electromagnetic solenoid 72 in response to the lock release command input from the input operation unit 75.

  When the electromagnetic solenoid 72 is energized, the movable iron core 73 is displaced. When the movable iron core 73 is displaced, the operation piece 46 is displaced, and the engaging portion 41 of the cassette portion locking mechanism 8X is angularly displaced from the lock position P11 to the lock release position P12 as shown in FIG. As a result, in the cassette portion locking mechanism 8X, the engagement between the engaging portion 41 and the engaged portion 42 is released. In this way, the cassette lock mechanism 8 is changed from the locked state to the unlocked state. At this time, the cover portion locking mechanism 9 also changes from the locked state to the unlocked state in conjunction with the cassette portion locking mechanism 8X.

  FIG. 9 is a diagram for explaining a change in the state related to the opening of both sides of the transport unit 6 in the transport direction, and FIG. 9 (1) shows a state where the upstream side of the transport unit 6 in the transport direction is opened. (2) shows a state in which the downstream side in the transport direction of the transport unit 6 is opened. Since FIG. 9 is similar to FIG. 5, description of common points is omitted, and only different points are described.

  In the present embodiment, regarding the transport portion 23X of the transport section 6, when the cassette section 5 is angularly displaced from the horizontal position to the inclined position, the rollers 28X and 29X of the transport roller pair are separated from each other. As a result, the nipping of the sheet member by the conveying roller pair is also released.

  Therefore, when removing the sheet member jammed in the conveying unit 6, the sheet member can be smoothly pulled out from the pair of conveying rollers. Thereby, the workability for removing the sheet body can be further improved. Further, it is possible to prevent the rollers 28X and 29X of the conveying roller pair from being damaged.

  Further, when the sheet body is pulled out, a large load is not applied to the conveying roller pair, and therefore, it is possible to prevent the applied pressure of the conveying roller pair from changing. This also prevents a change in the pressure balance between the separation roller pair and the conveyance roller pair, thereby preventing troubles during the next conveyance.

  Further, when the sheet body is pulled out, the tensile force does not act on the sheet body. Therefore, it is possible to prevent the sheet body from being broken and a part of the sheet body from remaining in the transport unit 6. If a part of the sheet remaining in the transport unit 6 is transported to the image forming apparatus 2 during the next transport, a problem may occur in the image forming apparatus 2. In the present embodiment, such a problem can be reliably prevented.

  FIG. 10 is a cross-sectional view showing the image forming apparatus 2 in a simplified manner. FIG. 10 shows a state where the manual feed tray 101 is attached to the image forming apparatus 2. The sheet supply devices 1 and 71 are attached to the image forming apparatus 2 instead of the manual feed tray 101.

  The image forming apparatus 2 is a digital multifunction machine having functions as a copying machine, a printer, and a facsimile machine. The image forming apparatus 2 includes a scanner unit 102 and an image forming unit 103.

  The scanner unit 102 reads a document image. The scanner unit 102 includes a document table 105 made of transparent glass, a double-sided automatic document feeder (abbreviated as RADF) 106, and a document reading unit 107.

  The double-sided automatic document feeder 106 conveys the documents set on the document tray one by one to the document placing table 105 and discharges the read document to the discharge tray. The double-sided automatic document feeder 106 can turn over the document after reading and transport it to the document table 105 again.

  The document reading unit 107 is disposed below the document placing table 105 and reads a document image on the document placing table 105 line by line. The document reading unit 107 includes a first scanning unit 111, a second scanning unit 112, an optical lens 113, and a photoelectric conversion element (Charge Coupled Device, abbreviated as CCD) line sensor 114. Hereinafter, the “photoelectric conversion element line sensor” is referred to as a “CCD line sensor”.

  The first scanning unit 111 includes a light source and a first reflection mirror that guides reflected light of the document to the second scanning unit 112. The first scanning unit 111 moves at a constant speed V from the left side to the right side in FIG.

  The second scanning unit 112 has second and third reflection mirrors. The second and third reflection mirrors guide light from the first reflection mirror of the first scanning unit 111 to the optical lens 113 and the CCD line sensor 114. The second scanning unit 112 follows the first scanning unit 111 and moves at a speed of V / 2.

  The optical lens 113 forms an image of the reflected light from the second scanning unit 112 on the CCD line sensor 114. The CCD line sensor 114 converts the light from the optical lens 113 into an analog electric signal. This electrical signal is converted into digital image data by an image processing unit (not shown) and stored in a memory (not shown).

  The image forming unit 103 forms a monochrome image on the sheet body based on the image data read by the scanner unit 102 and external image data. The image forming unit 103 includes a photosensitive drum 121, a charger 122, an exposure unit 123, a developing device 124, a transfer device 125, a cleaning device 126, and a fixing device 127.

  The charger 122 uniformly charges the surface of the photosensitive drum 121 to a predetermined potential. As the charger 122, a non-contact charger, for example, a charger-type charger is used. The charger 122 may be a contact-type charger, such as a roller-type charger or a brush-type charger.

  The exposure unit 123 exposes the surface of the photosensitive drum 121 uniformly charged by the charger 122 based on the image data, and forms an electrostatic latent image corresponding to the image data on the surface of the photosensitive drum 121. To do. As the exposure unit 123, a laser scanning unit (abbreviated as LSU) is used. The laser scanning unit includes a semiconductor laser light source and a reflection mirror that reflects the laser light from the semiconductor laser light source and guides it to the photosensitive drum 121. The exposure unit 123 of the image forming apparatus 2 shown in FIG. 10 has a plurality, specifically two semiconductor laser light sources, and exposes two dots at a time using two laser beams. This can speed up printing. The exposure unit 123 may be a writing head in which light emitting elements such as electroluminescence (abbreviated as EL) and light emitting diode (abbreviated as LED) are arranged in an array.

  The developing device 124 develops the electrostatic latent image formed on the surface of the photosensitive drum 121 with black toner to form a toner image. The transfer device 125 transfers the toner image formed on the surface of the photosensitive drum 121 to the sheet member. The cleaning device 126 removes the toner remaining after the transfer from the photosensitive drum 121 and collects it.

  The toner image formed on the surface of the photosensitive drum 121 is transferred to the sheet member by the transfer device 125. The transfer device 125 is disposed on the opposite side of the photosensitive drum 121 with respect to the sheet member. A voltage is applied to the transfer device 125, thereby generating an electric field for transfer. For example, when the toner image has a negative charge, the voltage application polarity of the transfer device 125 is positive.

The transfer device 125 includes a transfer belt 131, a transfer roller 132, a driving roller 133, and a tension roller 134. The transfer belt 131 is stretched around the transfer roller 132, the drive roller 133, and the tension roller 134. The transfer belt 131 has a predetermined resistance value, for example, a resistance value in a range of 1 × 10 ⁹ to 1 × 10 ¹³ Ω · cm.

  The transfer roller 132 faces the photosensitive drum 121 with the transfer belt 131 interposed therebetween. The transfer roller 132 has conductivity different from that of the driving roller 133 and the tension roller 134, and can generate a transfer electric field. The transfer roller 132 has elasticity, so that the photosensitive drum 121 and the transfer belt 131 are not in line contact but in surface contact having a predetermined width called a transfer nip, and the transfer efficiency to the sheet body is improved. Figured. The driving roller 133 rotates the transfer belt 131. The tension roller 134 applies an appropriate tension to the transfer belt 131 so that the transfer belt 131 rotates smoothly.

  On the downstream side of the transfer area of the transfer belt 131, a static elimination roller is provided. The neutralizing roller contacts the transfer belt 131 from the side opposite to the photosensitive drum 121. The neutralization roller removes excessive charges from the sheet body in order to smoothly convey the sheet body to the next process.

  The transfer device 125 is further provided with a cleaning unit that removes toner from the transfer belt 131 and a static elimination unit that neutralizes the transfer belt 131. The static elimination unit may be grounded via the image forming apparatus 2 or an electric field having a polarity opposite to the transfer electric field may be applied.

  The fixing device 127 fixes the toner image transferred to the sheet member to the sheet member. The fixing device 127 heats the sheet member, thereby melting the unfixed toner and fixing it to the sheet member. The fixing device 127 includes a heating roller 136 and a pressure roller 137.

  A sheet body peeling claw, a thermistor that is a roller surface temperature detection member, and a roller surface cleaning member are disposed on the outer periphery of the heating roller 136. Inside the heating roller 136, a heat source is provided that sets the surface of the heating roller 136 to a predetermined temperature (fixing set temperature: 160 to 200 ° C.). The pressure roller 137 contacts the heating roller 136 with a predetermined pressure. On the outer periphery of the pressure roller 137, a sheet body peeling claw and a roller surface cleaning member are disposed.

  Such a fixing device 127 melts the unfixed toner on the conveyed sheet member with heat from the heating roller 136 at a contact portion between the heating roller 136 and the pressure roller 137, which is called a fixing nip portion. . Then, the unfixed toner is fixed on the sheet member by a throwing action on the sheet member by the pressing force from the pressure roller 137.

  The image forming apparatus 2 includes a paper feed tray 141, a paper feed device (Large Capacity Cassette, abbreviated as LCC) 142, a manual feed tray 101, and a paper discharge tray 143.

  A sheet body on which an image is to be formed by the image forming unit 103 is accommodated in the paper feed tray 141. The paper feed tray 141 is disposed below the image forming unit 103. A sheet body of a standard size is accommodated in the paper feed tray 141. The sheet feed tray 141 can accommodate 500 to 1500 sheet members so that the image forming unit 103 can perform high-speed printing processing. There may be one sheet feeding tray 141 or a plurality of sheet feeding trays 141. In FIG. 10, there are two paper feed trays 141.

  A sheet body on which an image is to be formed by the image forming apparatus 2 is accommodated in the sheet feeding device 142. The sheet feeder 142 can accommodate a large amount of a plurality of types of sheet bodies. The sheet feeding device 142 supplies the sheet members to the image forming apparatus 2 one by one. The paper feeding device 142 is installed on the side of the image forming apparatus 2.

  A sheet body on which an image is to be formed by the image forming apparatus 2 is placed on the manual feed tray 101. A sheet body having an irregular size is mainly placed on the manual feed tray 101. The manual feed tray 101 is attached to the side portion 11 of the image forming apparatus 2. The manual feed tray 101 is disposed on the same side as the paper feeding device 142 with respect to the image forming apparatus 2.

  A sheet body on which an image is formed by the image forming unit 103 and discharged from the image forming unit 103 is placed on the paper discharge tray 143. The paper discharge tray 143 is attached to the side portion 11 of the image forming apparatus 2. The paper discharge tray 143 is disposed on the opposite side of the manual feed tray 101 with respect to the image forming apparatus 2. Instead of such a paper discharge tray 143, a paper discharge tray unit having a plurality of stages of paper discharge trays may be mounted. Further, in place of the paper discharge tray 143, a post-processing device having a staple function, a punch function, and the like may be provided.

  Each of the embodiments described above is merely an example of the present invention, and the configuration can be changed within the scope of the present invention.

It is sectional drawing which shows the structure of the sheet | seat supply apparatus 1 with a locking mechanism which is one Embodiment of this invention. It is sectional drawing which expands and shows the cassette part locking mechanism 8 and the cover part locking mechanism 9. As shown in FIG. 3 is an enlarged cross-sectional view of the movable table locking mechanism 10. FIG. It is a figure for demonstrating the change of the state which concerns on the opening of the said entrance / exit 16 of the cassette part 5. FIG. It is a figure for demonstrating the change of the state which concerns on the open | release of the conveyance direction both sides of the conveyance part. It is sectional drawing which simplifies and shows the structure of the sheet | seat supply apparatus 71 with a locking mechanism which is the other form of implementation of this invention. FIG. 4 is a block diagram showing an electrical configuration of a cassette unit locking mechanism 8. It is a figure for demonstrating the change of the state which concerns on the opening of the said entrance / exit 16 of the cassette part 5. FIG. It is a figure for demonstrating the change of the state which concerns on the open | release of the conveyance direction both sides of the conveyance part. FIG. 2 is a cross-sectional view showing the image forming apparatus 2 in a simplified manner.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1,71 Sheet body supply apparatus 2 Image forming apparatus 3 Base 4 Movable base 5 Cassette part 6 Conveyance part 7 Cover part 8 Cassette lock mechanism 9 Cover part lock mechanism 10 Movable base lock mechanism 12 Slide mechanism 26 Driving roller of separation roller pair 27 Driven rollers 28, 28X of the separation roller pair Drive rollers 29, 29X Driven rollers of the transfer roller pair 41 Engagement parts of the cassette part locking mechanisms 8, 8X 42 Engaged parts of the cassette part locking mechanisms 8, 8X 51 Engagement part of cover part locking mechanism 9 52 Engagement part of cover part locking mechanism 9 61 Engagement part of movable base locking mechanism 62 Engagement part of movable base locking mechanism 72 Electromagnetic solenoid

Claims (11)

A base provided on a side of an image forming apparatus that forms an image on a sheet body;
A movable base provided on the base so as to be slidable in a direction approaching and separating from the side part;
A cassette portion that is provided on the movable base and accommodates a sheet body on which an image is to be formed by the image forming apparatus, and is formed with a loading / unloading port for loading / unloading the sheet body, and a portion near the side portion A cassette portion that is angularly displaceable about a horizontal angular displacement axis perpendicular to the sliding direction of the movable table relative to the side portion ;
A conveyance unit that is slidably displaceable together with the movable table, and conveys the sheet members stored in the cassette unit one by one to the image forming apparatus;
It is configured to be switchable between a locked state in which the slide displacement of the movable table with respect to the side portion is blocked at a position where the sheet body can be conveyed by the conveyance unit and a unlocked state in which the slide displacement of the movable table with respect to the side portion is allowed. Movable table lock mechanism;
A cover portion that covers the cassette slot in an openable and closable manner;
A cover part locking mechanism configured to be switchable between a locked state that prevents the cover part from being opened and a unlocked state that allows the cover part to be opened ; and
Switchable between a locked state in which the angular displacement of the cassette portion relative to the movable base is blocked at a position where the sheet can be conveyed by the conveying portion, and a unlocked state in which the angular displacement of the cassette portion relative to the movable base is allowed. A sheet body supply device with a lock mechanism, comprising: a cassette portion lock mechanism configured . The cassette part locking mechanism includes an engaging portion provided on the movable base, provided in the cassette unit, according to claim 1, characterized in that it comprises a engaged portion engaging portion is engaged Sheet body supply device with a locking mechanism. The cassette part locking mechanism is
An electromagnetic drive source that is provided on the movable table and that drives the engagement portion by a driving force by an electromagnetic force;
The sheet supply device with a lock mechanism according to claim 2 , wherein the sheet supply device is provided so as to be isolated from the outside. The sheet supply device with a lock mechanism according to any one of claims 1 to 3 , wherein the cover part lock mechanism is interlocked with the cassette part lock mechanism. The sheet feeding device with a lock mechanism according to any one of claims 1 to 4 , wherein the movable table lock mechanism is configured to be able to switch a state by an angular displacement of the cassette unit. Said carriage lock mechanism, an engaging portion provided in the cassette part, provided on the side, according to claim 5, characterized in that it comprises a engaged portion engaging portion is engaged Sheet body supply device with a locking mechanism. The transport unit has a pair of rollers that are vertically paired with respect to a transport path along which the sheet body is transported, and at least one roller is rotationally driven.
The rollers of the roller pair, when the cassette unit is angularly displaced from the position capable of conveying the sheet by the conveying unit, the locking mechanism according to any one of claims 1 to 6, characterized in that spaced from each other Sheet body supply device. The sheet supply device with a lock mechanism according to claim 7 , wherein the roller pair includes a movable table side roller provided on the movable table and a cassette unit side roller provided on the cassette unit. Between said movable platform and said base are, according to any one of claims 1-8, characterized in that the slide mechanism for sliding displacement is provided the movable table relative to the base Sheet body supply device with a locking mechanism. 10. The sheet body supply with a lock mechanism according to claim 9 , wherein the slide mechanism is configured such that a plurality of slide members are slidably connected to each other via a plurality of balls held by a ball retainer. apparatus. The sheet body, with a lock mechanism sheet feeding apparatus according to any one of claims 1-10, characterized in that the coated paper.

Images