JP2022059435A - Foil transfer device - Google Patents

Abstract

To reduce waste of a foil film.SOLUTION: A foil transfer device 1 comprises: a cover 22; a heating member (heat roller 61) which heats a foil film F and a sheet S; a pressure member (pressure roller 51) which holds the foil film F and the sheet S between the heating member and itself; a peeling member (second guide shaft 42) which peels off the foil film F from the sheet S; a first conveyance roller 13; and a second conveyance roller 14. The first conveyance roller 13 is provided in the cover 22, is located on the downstream of the peeling member in the conveyance direction and conveys the sheet S. The second conveyance roller 14 is provided in the cover 22, nips the sheet S between the first conveyance roller 13 and itself and conveys the sheet S. The nipping forces of the first conveyance roller 13 and the second conveyance roller 14 have the magnitude at which the sheet S nipped between the first conveyance roller 13 and the second conveyance roller 14 can be peeled off from the foil film F when the cover 22 is moved to the open position from the close position.SELECTED DRAWING: Figure 8

Description

The present invention relates to a foil transfer device that transfers foil to a sheet.

Conventionally, as a foil transfer device, a supply reel around which a foil film is wound, a take-up reel for winding the foil film, a heating roller for heating the foil film and a sheet, and a heating roller between the foil film and the heating roller are used. A pressurizing roller for sandwiching a sheet is known (see Patent Document 1).

Japanese Unexamined Patent Publication No. 7-290685

In such a foil transfer device, for example, when the sheet for transferring the foil is clogged in the middle, the transfer of the sheet is stopped. At this time, if the sheet is pulled in the transport direction in order to remove the sheet remaining in the transport path, the foil film attached to the sheet may be pulled together. When the foil film is pulled together with the sheet, the unused foil film is unnecessarily pulled out, and the foil film is wasted.

Therefore, an object of the present invention is to reduce waste of the foil film.

The foil transfer device for solving the above-mentioned problems is a device for stacking a sheet on a foil film containing foil and transferring the foil to the sheet, and includes a film unit, a housing body, a cover, a heating member, and the like. It includes a pressurizing member, a peeling member, a first transport roller, and a second transport roller.
The film unit has a feed reel around which a foil film is wound. The housing body has an opening for attaching and detaching the film unit. The cover is movable between a closed position that closes the opening and an open position that opens the opening. The heating member heats the foil film and the sheet. The pressurizing member sandwiches the foil film and the sheet with the heating member. The peeling member peels the foil film from the sheet by changing the traveling direction of the foil film that has passed between the heating member and the pressure member in a direction different from the transport direction of the sheet. The first transport roller is provided on the cover, is located downstream of the peeling member in the transport direction, and transports the sheet. The second transfer roller is provided on the cover, and the sheet is niped between the second transfer roller and the first transfer roller to transfer the sheet.
The nip force of the first transfer roller and the second transfer roller is large enough to peel off the sheet nipped by the first transfer roller and the second transfer roller from the foil film when the cover is moved from the closed position to the open position. That's right.

According to this configuration, when the transfer of the sheet is stopped while the sheet is in the transfer path, when the cover is moved from the closed position to the open position, the sheet attached to the foil film becomes the first transfer roller. It is peeled off from the foil film while being nipped between the second transport rollers. Therefore, it is possible to prevent the unused foil film from being pulled out together with the sheet. As a result, it is possible to reduce the waste of the foil film.

Further, in the above-described configuration, the cover may have a paper discharge chute that guides the sheet downstream of the peeling member in the transport direction, and the paper discharge chute may have a second transport roller.

Further, in the above-described configuration, the paper ejection chute may have a urging member for urging the second transport roller so that the second transport roller is pressed toward the first transport roller.

Further, in the above-described configuration, the urging member may be a torsion spring and may be provided at both ends in the width direction of the seat.

Further, in the above-described configuration, the paper ejection chute has a first surface which is located at the downstream end of the paper ejection chute in the transport direction, intersects the transport direction, and extends in the vertical direction, and the housing body has the first surface. It may have a second surface that is adjacent to the bottom, intersects the transport direction, and extends in the vertical direction, and the second surface may not protrude in the transport direction with respect to the first surface.

According to this configuration, when the sheet is ejected, it is possible to prevent the rear end of the sheet from touching the second surface of the main body housing or the upper surface of the housing body on the second surface. Therefore, when the sheet is ejected, it is possible to prevent the rear end of the sheet from being caught in the main body housing.

Further, in the above-described configuration, the first transport roller further includes a motor and a one-way clutch that is in a transmission state in which the driving force of the motor is transmitted according to the rotation direction or in a non-transmission state in which the driving force is not transmitted. , When the motor is ON, drive is input from the motor via the one-way clutch, and the seat is conveyed in the transport direction by rotating in the first rotation direction. When the one-way clutch is in the non-transmission state, the first rotation resistance force is applied, and when the motor is turned off and the one-way clutch is rotated in the second rotation direction opposite to the first rotation direction, the one-way clutch is transmitted. In the state, a second rotational resistance force larger than the first rotational resistance force may be applied.

According to this configuration, when the motor is OFF, the rotation resistance of the first transport roller is larger when it is rotated in the second rotation direction than when it is rotated in the first rotation direction. Therefore, when the seat nipped in the first transfer roller and the second transfer roller is pulled in the transfer direction when the motor is OFF, the one-way clutch is in a non-transmissive state and the sheet is pulled out with a light force. Can be done. On the other hand, when the seat nipped in the first transfer roller and the second transfer roller is pulled in the direction opposite to the transfer direction when the motor is OFF, the one-way clutch is in the transmission state and the sheet is pulled with a light force. I can't pull it out. As a result, when the cover is moved from the closed position to the open position while the sheet is niped between the first transfer roller and the second transfer roller, it rotates from between the first transfer roller and the second transfer roller. It is possible to prevent it from coming off.

According to the present invention, waste of the foil film can be reduced.

It is a figure (a) which shows the foil transfer apparatus which concerns on one Embodiment of this invention, and is a sectional view (b) which shows the structure of a foil film. It is a figure which shows the state which opened the cover of the foil transfer apparatus. It is sectional drawing (a) which shows the film unit, and sectional drawing (b) which shows the state which the film cartridge for foil transfer was removed from the holder. It is a figure which shows the paper ejection chute provided in the cover. It is a perspective view which shows a film unit and a paper ejection chute. A diagram (a) showing the rotation direction of the first transport roller when the motor is ON, a diagram (b) showing the case where the first transport roller is rotated in the first rotation direction when the motor is OFF, and a motor. It is a figure (c) which shows the case where the 1st transfer roller is rotated in the 2nd rotation direction in the state of OFF. It is a figure which shows the state which the sheet which transfers a foil is clogged in the middle, and the foil transfer is stopped. It is a figure which shows the state which opened the cover a little from the state of FIG. It is a figure which shows the state which opened the cover further from the state of FIG.

An embodiment of the present invention will be described in detail with reference to the drawings as appropriate. In the following description, the direction will be described in the direction shown in FIG. 1 (a). That is, the right side of FIG. 1 (a) is "front", the left side of FIG. 1 (a) is "rear", the front side of the paper surface of FIG. 1 (a) is "left", and the paper surface of FIG. 1 (a). The back side is "right". Further, the upper and lower parts of FIG. 1 (a) are referred to as "up and down".

The foil transfer device 1 is a device for superimposing the sheet S on the foil film F containing the foil and transferring the foil to the sheet S. As shown in FIG. 1A, the foil transfer device 1 is a device for transferring a foil such as aluminum onto a toner image formed on a sheet S by an image forming device such as a laser printer. The foil transfer device 1 includes a housing 2, a sheet tray 3, a sheet transfer unit 10, a film supply unit 30, and a transfer unit 50.

The housing 2 is made of resin or the like, and includes a housing body 21 and a cover 22. The housing body 21 has an opening 21A (see FIG. 2) at the top. The opening 21A is an opening for attaching / detaching the film unit FU, which will be described later, to / from the housing body 21. The opening 21A faces upward. The cover 22 is a member for opening and closing the opening 21A. The rear end portion of the cover 22 is rotatably supported by the housing body 21. The cover 22 is movable between a closed position that closes the opening 21A and an open position that opens the opening 21A. In the present embodiment, the cover 22 opens in a direction different from the transport direction of the sheet S.

The sheet tray 3 is a tray on which a sheet S such as paper and an OHP film is placed. The seat tray 3 is provided at the rear of the housing 2. The sheet S is placed on the sheet tray 3 with the surface on which the toner image is formed facing down.

The sheet transport unit 10 includes a sheet supply mechanism 11 and a sheet discharge mechanism 12. The sheet supply mechanism 11 is a mechanism for transporting the sheets S on the sheet tray 3 one by one toward the transfer unit 50. The seat supply mechanism 11 includes a pickup roller 11A, a retard roller 11B, and an upstream transfer roller 11C.

The pickup roller 11A is a roller for supplying the sheet S on the seat tray 3 toward the transfer unit 50. The retard roller 11B is a roller for separating the sheet S conveyed by the pickup roller 11A into one sheet.

The retard roller 11B is arranged on the pickup roller 11A. The retard roller 11B is rotatable in a direction in which the sheet S overlapping on the sheet S sent out by the pickup roller 11A is returned toward the seat tray 3.

The upstream transfer roller 11C is composed of two rollers, and the sheet S can be conveyed by rotating each roller with the sheet S sandwiched between the rollers. The upstream transfer roller 11C is arranged between the pickup roller 11A and the transfer section 50, and transports the sheet S delivered by the pickup roller 11A to the transfer section 50.

The sheet ejection mechanism 12 is a mechanism for ejecting the sheet S that has passed through the transfer unit 50 to the outside of the housing 2. The sheet discharging mechanism 12 includes a first transport roller 13, a second transport roller 14, a third transport roller 15, and a fourth transport roller 16. The first transfer roller 13, the second transfer roller 14, the third transfer roller 15, and the fourth transfer roller 16 are provided on the cover 22.

The first transport roller 13 is located downstream of the second guide shaft 42 as an example of the peeling member described later in the transport direction of the sheet S. In the following description, the transport direction of the sheet S is also simply referred to as a “transport direction”. The first transfer roller 13 is located between the second guide shaft 42 and the third transfer roller 15 in the transfer direction. The first transfer roller 13 conveys the sheet S sent out from the transfer unit 50 toward the third transfer roller 15.

The second transfer roller 14 faces the first transfer roller 13. The second transfer roller 14 is driven by the first transfer roller 13 to rotate, nip the sheet S with the first transfer roller 13, and transfer the sheet S.

The third transfer roller 15 is located downstream of the first transfer roller 13 in the transfer direction. The third transfer roller 15 discharges the sheet S sent out by the first transfer roller 13 to the outside of the housing 2.

The fourth transport roller 16 faces the third transport roller 15. The fourth transfer roller 16 rotates in accordance with the third transfer roller 15 and conveys the sheet S with the sheet S niped between the third transfer roller 15 and the third transfer roller 15.

The film supply unit 30 is a portion that supplies the foil film F so as to be overlapped with the sheet S conveyed from the sheet supply mechanism 11. The film supply unit 30 includes a film unit FU and a motor 80.

As shown in FIG. 2, the film unit FU can be attached to and detached from the housing body 21 from above. The film unit FU includes a supply reel 31, a take-up reel 35, a first guide shaft 41, a second guide shaft 42 as an example of a peeling member, and a third guide shaft 43 as an example of a defined member. ing. A foil film F is wound around the supply reel 31 of the film unit FU.

As shown in FIG. 1 (b), the foil film F has a support layer F1 and a supported layer F2. The support layer F1 is a tape-shaped transparent base material made of a polymer material and supports the supported layer F2.

The supported layer F2 has a peeling layer F21, a transfer layer F22, and an adhesive layer F23. The release layer F21 is a layer for facilitating the release of the transfer layer F22 from the support layer F1, and is arranged between the support layer F1 and the transfer layer F22. The peeling layer F21 contains a transparent material that can be easily peeled from the support layer F1, for example, a wax-based resin.

The transfer layer F22 is a layer transferred to the toner image and contains a foil. The foil is a thin metal such as gold, silver, copper, and aluminum. Further, the transfer layer F22 contains a coloring material such as gold, silver, or red, and a thermoplastic resin. The transfer layer F22 is arranged between the release layer F21 and the adhesive layer F23.

The adhesive layer F23 is a layer for facilitating the adhesion of the transfer layer F22 to the toner image. The adhesive layer F23 contains a material that easily adheres to the toner image heated by the transfer unit 50, which will be described later, for example, a vinyl chloride resin or an acrylic resin.

As shown in FIG. 1A, the supply reel 31 is made of resin or the like, and has a supply shaft portion 31A around which the foil film F is wound. The take-up reel 35 is made of resin or the like, and has a take-up shaft portion 35A for winding the foil film F. The supply reel 31 is provided with a load applying mechanism (not shown). This load applying mechanism is a mechanism that applies a load torque to the supply reel 31 by generating a frictional force with the supply case 32 that rotatably supports the supply reel 31. When the load torque is applied to the supply reel 31 and the foil film F is wound by the take-up reel 35, tension is applied to the foil film F.

In FIG. 1A and the like, for convenience, the state in which the foil film F is maximally wound on both the supply reel 31 and the take-up reel 35 is shown. Actually, when the film unit FU is new, the diameter of the roll-shaped foil film F wound around the supply reel 31 is the maximum, and the foil film F is wound around the take-up reel 35. The diameter of the roll-shaped foil film F that is not formed or is wound around the take-up reel 35 is the minimum. Further, at the end of the life of the film unit FU (when the foil film F is used up), the diameter of the roll-shaped foil film F wound around the take-up reel 35 becomes the maximum, and the foil film F is provided on the supply reel 31. The diameter of the roll-shaped foil film F that is not wound or is wound around the supply reel 31 is minimized.

The first guide shaft 41, the second guide shaft 42, and the third guide shaft 43 are roller-shaped shafts for changing the traveling direction of the foil film F. The first guide shaft 41, the second guide shaft 42, and the third guide shaft 43 are made of SUS (stainless steel) or the like.

The first guide shaft 41 is located upstream of the transfer unit 50 in the transport direction of the sheet S. The first guide shaft 41 changes the traveling direction of the foil film F drawn out from the supply reel 31 so as to be substantially parallel to the transport direction of the sheet S.

The foil film F guided by such a first guide shaft 41 is conveyed toward the transfer unit 50 with the supported layer F2 (see FIG. 1B) facing upward. Further, the sheet S is superposed on the foil film F with the supported layer F2 facing upward, and is conveyed together with the foil film F toward the transfer portion 50.

The second guide shaft 42 is located downstream of the transfer unit 50 in the transport direction of the sheet S. The second guide shaft 42 peels the foil film F from the sheet S by changing the traveling direction of the foil film F that has passed through the transfer portion 50 to a direction different from the transport direction of the sheet S.

The third guide shaft 43 is a member that defines the traveling direction of the foil film F that is changed by the second guide shaft 42. Specifically, the third guide shaft 43 defines the angle of the foil film F (hereinafter, also referred to as “peeling angle”) when the foil film F is peeled from the sheet S. Here, the peeling angle is set between the portion of the foil film F stretched between the first guide shaft 41 and the second guide shaft 42 and the tension between the second guide shaft 42 and the third guide shaft 43. It is the angle formed by the part to be made. The third guide shaft 43 changes the traveling direction of the foil film F guided by the second guide shaft 42 and guides the foil film F to the take-up reel 35.

With the film unit FU mounted on the foil transfer device 1, the take-up reel 35 is rotationally driven counterclockwise as shown by the motor 80 provided in the housing 2. When the take-up reel 35 rotates, the foil film F wound around the supply reel 31 is pulled out, and the drawn foil film F is guided by the guide shafts 41 to 43 and taken up by the take-up reel 35. .. Specifically, during the foil transfer, the foil film F is fed out by the pressure roller 51 and the heating roller 61, which will be described later, so that the foil film F is pulled out from the supply reel 31. Then, the foil film F sent out from the pressure roller 51 and the heating roller 61 is wound on the take-up reel 35.

The transfer unit 50 is a portion for transferring the transfer layer F22 onto the toner image formed on the sheet S by heating and pressurizing the sheet S and the foil film F in a state of being overlapped with each other. The transfer unit 50 includes a pressure roller 51 as an example of a pressure member and a heating roller 61 as an example of a heating member. The transfer unit 50 heats and pressurizes the sheet S and the foil film F in an overlapping manner at the nip portion of the pressurizing roller 51 and the heating roller 61.

The pressure roller 51 is a roller in which the circumference of a cylindrical core metal is coated with a rubber layer made of silicon rubber. The pressure roller 51 is arranged on the upper side of the foil film F and is in contact with the back surface of the sheet S (the surface opposite to the surface on which the toner image is formed).

Both ends of the pressure roller 51 are rotatably supported by the cover 22. The pressure roller 51 sandwiches the sheet S and the foil film F with the heating roller 61, and is rotationally driven by the motor 80 to drive the heating roller 61 to rotate.

The heating roller 61 is a roller in which a heater is arranged inside a metal tube formed in a cylindrical shape, and heats the foil film F and the sheet S. The heating roller 61 is arranged below the foil film F and is in contact with the foil film F. The heating roller 61 heats the foil film F and the sheet S.

In this embodiment, the heating roller 61 is moved by the contact / detachment mechanism 70 for contacting / separating the heating roller 61 with respect to the foil film F. The contact / detachment mechanism 70 is arranged between the supply reel 31 and the take-up reel 35 in the transport direction of the sheet S. When the cover 22 is closed, the contact / detachment mechanism 70 moves the heating roller 61 to a contact position in contact with the foil film F at the timing when the sheet S is supplied to the transfer unit 50. Further, the contact / detachment mechanism 70 positions the heating roller 61 at a separated position away from the foil film F when the cover 22 is opened or when the transfer portion 50 does not transfer the foil to the sheet S. There is.

In the foil transfer device 1 configured in this way, the sheet S placed on the sheet tray 3 with the surface of the sheet S facing down is conveyed toward the transfer unit 50 by the sheet supply mechanism 11. The sheet S is overlapped with the foil film F supplied from the supply reel 31 on the upstream side in the transfer direction of the transfer unit 50, and is conveyed to the transfer unit 50 in a state where the toner image of the sheet S and the foil film F are in contact with each other. ..

In the transfer portion 50, when the sheet S and the foil film F pass through the nip portion between the pressurizing roller 51 and the heating roller 61, they are heated and pressurized by the heating roller 61 and the pressurizing roller 51, and the toner image is displayed. The foil (supported layer F2) is transferred onto the foil.

After the foil is transferred, the sheet S and the foil film F are conveyed to the second guide shaft 42 in a state of being attached to each other. When the sheet S and the foil film F pass through the second guide shaft 42, the transport direction of the foil film F changes to a direction different from the transport direction of the sheet S, so that the foil film F is peeled off from the sheet S, that is, adhered to the toner image. The supported layer F2 is peeled off from the support layer F1 of the foil film F.

The foil film F containing the support layer F1 peeled off from the sheet S and adhered to the toner image on the sheet S and peeled off from the supported layer F2 is wound on the take-up reel 35. On the other hand, the sheet S from which the foil film F has been peeled off is discharged to the outside of the housing 2 by the sheet discharging mechanism 12 with the surface on which the foil is transferred facing downward.

As shown in FIG. 3, the film unit FU includes a holder 100 made of resin or the like, and a foil transfer film cartridge FC that can be attached to and detached from the holder 100. The film cartridge FC for foil transfer includes the above-mentioned supply reel 31 and take-up reel 35.

The supply reel 31 and the take-up reel 35 are removable from the holder 100 in a direction orthogonal to the axial direction of the supply reel 31. In the following description, the axial direction of the supply reel 31 is also simply referred to as "axial direction".

The holder 100 has a base frame 110 and a rotating frame 120 rotatably (movably) supported by the base frame 110. The base frame 110 includes a first support portion 111, a second support portion 112, a connecting portion 113, a first guide shaft 41, and a second guide shaft 42.

The first support portion 111 is a portion that supports the first guide shaft 41 and the supply reel 31. Specifically, since the supply reel 31 is housed in the supply case 32 shown in FIG. 5, the first support portion 111 supports the supply reel 31 via the supply case 32.

As shown in FIG. 3, the second support portion 112 is a portion that supports the second guide shaft 42 and the take-up reel 35. Specifically, the second support portion 112, together with the rotating frame 120, constitutes a hollow case, and the take-up reel 35 is housed in the hollow case.

The connecting portion 113 is a portion that connects the first support portion 111 and the second support portion 112. The connecting portion 113 connects one ends of the first support portion 111 and the second support portion 112 in the axial direction.

The rotating frame 120 includes a third guide shaft 43 and a first guide G1. The rotating frame 120 is separated from the contact position where the third guide shaft 43 in contact with the foil film F shown in FIG. 3A and the third guide shaft 43 shown in FIG. 3B away from the foil film F. It is rotatable between the position and the position. The rotating frame 120 is positioned at the contact position by coming into contact with a positioning portion (not shown) of the base frame 110.

The first guide G1 is a member that guides the sheet S between the second guide shaft 42 and the first transport roller 13 in the transport direction (see FIG. 5).

Here, the sheet discharging mechanism 12 for discharging the sheet S to the outside of the housing 2 will be described in detail. As shown in FIG. 2, the cover 22 has a paper ejection chute 90 in addition to the pressure roller 51, the first transfer roller 13, and the like described above. The paper ejection chute 90 is a member that guides the sheet S downstream of the second guide shaft 42 in the transport direction. The paper ejection chute 90 is fixed to the underside of the cover 22 with a space for the sheet S to pass through. The sheet S is discharged to the outside of the housing 2 through the upper side of the paper ejection chute 90.

As shown in FIG. 4, the paper ejection chute 90 includes a second transport roller 14, a bearing 14A, a torsion spring 91 as an example of an urging member, a boss 92, a fourth transport roller 16, and a second guide. It has G2 and.

As shown in FIG. 5, bearings 14A are provided at both ends of the second transfer roller 14 and rotatably support the second transfer roller 14. The bearing 14A is supported by the paper ejection chute 90 so as to be slidable, and can be moved in a direction close to or away from the path of the sheet S.

The torsion springs 91 are provided at both ends of the seat S in the width direction. As shown in FIG. 4, the torsion spring 91 has a coil portion 91A, a first arm 91B, and a second arm 91C. The coil portion 91A is engaged with the boss 92. The boss 92 projects axially from both ends of the paper ejection chute 90. The first arm 91B extends from the coil portion 91A, and its tip is engaged with the paper ejection chute 90. The second arm 91C extends from the coil portion 91A, and its tip is engaged with the bearing 14A. The torsion spring 91 always urges the bearing 14A toward the first transport roller 14. As a result, the torsion spring 91 urges the second transfer roller 14 so that the second transfer roller 14 is pressed toward the first transfer roller 13.

When the second transfer roller 14 is pressed against the first transfer roller 13, a nip force for sandwiching the sheet S is generated between the first transfer roller 13 and the second transfer roller 14. The nip force of the first transfer roller 13 and the second transfer roller 14 is determined by the urging force of the torsion spring 91. The nip force of the first transfer roller 13 and the second transfer roller 14 is a foil film for the sheet S nipped by the first transfer roller 13 and the second transfer roller 14 when the cover 22 is moved from the closed position to the open position. It is a size that can be peeled off from F. In other words, the nip force of the first transfer roller 13 and the second transfer roller 14 is applied by the first transfer roller 13 and the second transfer roller 14 when the cover 22 is moved from the closed position to the open position. The size is sufficient to peel off the nipped sheet S from the foil film F.

The second guide G2 is a member that guides the seat S. Specifically, as shown in FIG. 5, the second guide G2 has a plurality of first ribs G21 arranged in the axial direction and a plurality of second ribs G22 arranged in the axial direction.

The plurality of first ribs G21 are located upstream of the second transport roller 14 in the transport direction. The plurality of second ribs G22 are located downstream of the second transport roller 14 in the transport direction.

As shown in FIG. 1, the paper ejection chute 90 has a first surface M1 located at the downstream end of the paper ejection chute 90 in the transport direction. The first surface M1 is a surface that intersects the transport direction and extends in the vertical direction. In the present embodiment, the first surface M1 faces slightly downward.

The housing body 21 has a second surface M2 adjacent to the first surface M1. The second surface M2 is a surface that intersects the transport direction and extends in the vertical direction. The second surface M2 faces slightly downward. In the present embodiment, the second surface M2 is arranged flush with the first surface M1. The second surface M2 does not project in the transport direction with respect to the first surface M1. That is, the second surface M2 is formed so as not to be located downstream of the first surface M1 in the transport direction.
Further, the housing body 21 has an upper surface M21. The upper surface M21 is an upper surface of the second surface M2 and extends in a direction intersecting the second surface M2.

Here, a configuration in which a driving force is input to the first transport roller 13 will be described. In the present embodiment, the motor 80 that inputs the drive to the take-up reel 35 also drives the first transfer roller 13, but the first transfer roller 13 may be driven by a motor different from the motor 80.
As shown in FIG. 6A, the foil transfer device 1 further includes a one-way clutch 81 and a gear train 82. The driving force of the first transport roller 13 is transmitted from the motor 80 via the one-way clutch 81 and the gear train 82.

The one-way clutch 81 has an inner ring portion 81A and an outer ring portion 81B. The one-way clutch 81 is in a transmission state in which the inner ring portion 81A transmits the driving force to the outer ring portion 81B and a non-transmission state in which the inner ring portion 81A does not transmit the driving force to the outer ring portion 81B, depending on the rotation direction. Further, the one-way clutch 81 is in a transmission state in which the outer ring portion 81B transmits the driving force to the inner ring portion 81A and a non-transmission state in which the outer ring portion 81B does not transmit the driving force to the inner ring portion 81A, depending on the rotation direction. That is, the one-way clutch 81 is in a transmission state in which the driving force of the motor 80 is transmitted according to the rotation direction, or a non-transmission state in which the driving force is not transmitted.

The gear train 82 is one or a plurality of gears that transmit a driving force from the one-way clutch 81 to the first transfer roller 13.

When the motor 80 is ON, the first transfer roller 13 is driven by the motor 80 via the one-way clutch 81. At this time, since the motor 80 rotates in a predetermined direction, the one-way clutch 81 is in the transmission state. The first transport roller 13 whose drive is transmitted by the one-way clutch 81 rotates in the first rotation direction D1 to transport the seat S in the transport direction.

As shown in FIG. 6B, when the first transfer roller 13 is rotated in the first rotation direction D1 while the motor 80 is OFF, the first transfer roller 13 is sandwiched between the first transfer roller 13 and the second transfer roller 14, for example. When the seat S is pulled in the transport direction, the one-way clutch 81 is in a non-transmissive state, so that a relatively small first rotational resistance force is applied.

As shown in FIG. 6C, when the first transfer roller 13 is rotated in the second rotation direction D2 opposite to the first rotation direction D1 while the motor 80 is OFF, for example, the first transfer roller 13 When the seat S sandwiched between the second transfer roller 14 and the second transfer roller 14 is pulled in a direction opposite to the transfer direction, the one-way clutch 81 is in a transmission state, so that a second rotational resistance force larger than the first rotational resistance force is generated. It takes.

As described above, in the state where the motor 80 is OFF, in order to rotate the first transport roller 13 in the second rotation direction D2, a larger force than the rotation in the first rotation direction D1 is required.

Next, with reference to FIGS. 7 to 9, the operation of removing the sheet S when the sheet S is stopped in the state of being in the transfer path in the foil transfer device 1 will be described.
The foil transfer device 1 may stop while the sheet S is in the transport path when the sheet S is clogged in the middle, an emergency stop is activated, or a power failure occurs. Here, when the foil transfer device 1 is stopped, the front end portion of the sheet S is located downstream from the first transport roller 13 in the transport direction, and the rear end portion of the sheet S is between the pressure roller 51 and the heating roller 61. A case where it is located upstream in the transport direction from the nip portion of the above will be described.

As shown in FIG. 7, when the transfer of the sheet S is stopped while the sheet S is in the transfer path, the sheet S remains in the transfer path. At this time, the motor 80 is turned off. Further, since the foil film F has been transferred to a part of the sheet S, the sheet S is in a state of being partially attached to the foil film F. Specifically, the sheet S is in a state of being attached to the foil film F between the nip portion between the pressure roller 51 and the heating roller 61 and the second guide shaft 42.

As shown in FIG. 8, when the user slightly opens the cover 22 with the sheet S nipped in the first transfer roller 13 and the second transfer roller 14, the first transfer roller 13 and the second transfer roller 14 are lifted. Be done. Since the nip force of the first transfer roller 13 and the second transfer roller 14 is large enough to allow the sheet S to be peeled off from the foil film F, the sheet S is moved away from the foil film F (see the arrow in FIG. 8). It is pulled and the sheet S is peeled off from the foil film F.

At this time, a force for rotating the first transport roller 13 in the second rotation direction D2 acts from the sheet S. However, in order to rotate the first transfer roller 13 in the second rotation direction D2, a larger force than to rotate in the first rotation direction is required, so that the first transfer roller 13 is moved to the second rotation direction D2. It hardly rotates (see FIG. 6 (c)).

In this case, the farther the first transport roller 13 is from the second guide shaft 42, the smaller the angle at which the sheet S is peeled off and started to be peeled off. However, since the first transport roller 13 is located near the second guide shaft 42, the sheet S is pulled away from the foil film F even when the cover 22 is slightly opened. It becomes.

Further, as described above, a load torque is applied to the supply reel 31 by a load applying mechanism. Therefore, even if the sheet S is pulled away from the foil film F, the foil film F hardly moves.

Then, when the cover 22 is further opened from the state of FIG. 8, the sheet S is gradually peeled off from the foil film F, and as shown in FIG. 9, the sheet S is completely peeled off from the foil film F. After the sheet S is completely peeled off from the foil film F, the sheet S may be pulled to remove it. As described above, when the transfer of the sheet S is stopped while the sheet S is in the transfer path, even if the sheet S is removed, the foil film F is hardly pulled out unused.

Based on the above, the following effects can be obtained in the present embodiment.
When the transfer of the sheet S is stopped while the sheet S is in the transfer path, the user needs to remove the sheet S.
If the nip force of the first transfer roller 13 and the second transfer roller 14 moves the cover 22 from the closed position to the open position, the sheet S nipped by the first transfer roller 13 and the second transfer roller 14 is moved. If the size is such that it cannot be peeled off from the foil film F, the front end portion of the sheet S slips through the nip positions of the first transport roller 13 and the second transport roller 14 when the cover 22 is opened (FIG. FIG. 8). If the user pulls the sheet S in the transport direction in this state, the foil film F attached to the sheet S also moves in the transport direction. Therefore, the unused foil film F is pulled out.
However, according to the foil transfer device 1, the nip force of the first transfer roller 13 and the second transfer roller 14 is the first transfer roller 13 and the second transfer when the cover 22 is moved from the closed position to the open position. Since the sheet S nipped by the roller 14 can be peeled off from the foil film F, when the cover 22 is moved from the closed position to the open position, the sheet S becomes the first transfer roller 13 and the second transfer roller 14. It is peeled off from the foil film F in a state of being nipped in between. In this case, the sheet S attached to the foil film F moves in the direction in which the cover 22 opens, that is, in a direction different from the transport direction. Therefore, it is possible to prevent the unused foil film F from being pulled out together with the sheet S. As a result, it is possible to reduce the waste of the foil film F.

Further, the second surface M2 of the housing body 21 is located adjacent to the first surface M1 located at the downstream end of the paper ejection chute 90, and does not project in the transport direction with respect to the first surface M1. Therefore, when the sheet S is ejected, it is possible to prevent the rear end of the sheet S from touching the second surface M2 or the upper surface M21 of the housing main body 21 on the second surface M2. Therefore, it is possible to prevent the rear end of the sheet S from being caught by the housing body 21 when the sheet S is ejected.

Further, when the drive of the first transport roller 13 is input from the motor 80 via the one-way clutch 81 and the motor 80 is turned off, the first transport roller 13 is rotated in the second rotation direction D2 opposite to the first rotation direction D1. When the clutch 81 is in the transmission state, a second rotational resistance force larger than the first rotational resistance force is applied. Therefore, when the sheet S nipped in the first transfer roller 13 and the second transfer roller 14 is pulled in the transfer direction when the motor 80 is OFF, the one-way clutch 81 is in a non-transmissive state, so that a light force is applied. The sheet S can be pulled out with. On the other hand, when the motor 80 is OFF and the sheet S nipped in the first transfer roller 13 and the second transfer roller 14 is pulled in the direction opposite to the transfer direction, the one-way clutch 81 is in the transmission state. The seat S cannot be pulled out with a light force. As a result, when the cover 22 is moved from the closed position to the open position while the sheet S is nipped between the first transfer roller 13 and the second transfer roller 14, the first transfer roller 13 and the second transfer roller 14 are moved. It is possible to prevent the vehicle from rotating from between 14 and coming off.

The present invention is not limited to the above embodiment, and can be used in various forms as illustrated below.

In the above-described embodiment, the first surface M1 and the second surface M2 face slightly downward from the horizontal, but the first surface M1 and the second surface M2 may face in the horizontal direction (right sideways). You may be facing up.

In the above embodiment, the pressurizing roller 51 is exemplified as the pressurizing member and the heating roller 61 is exemplified as the heating member, but the present invention is not limited thereto. For example, the pressurizing member may be a pad or the like that sandwiches the sheet and the foil film with the heating roller. Further, the heating member may be a plate-shaped member that sandwiches the sheet and the foil film between the heating member and the pressure roller.

In the above embodiment, the roller-shaped second guide shaft 42 is exemplified as the peeling member, but the present invention is not limited to this, and the peeling member may be, for example, a plate-shaped blade.
In the above embodiment, the roller-shaped third guide shaft 43 is exemplified as the defining member, but the present invention is not limited to this, and the defining member may be, for example, a plate-shaped blade.

In the above embodiment, the foil transfer film cartridge FC is provided with the supply reel 31 and the take-up reel 35, but the present invention is not limited thereto. For example, the foil transfer film cartridge may be provided with a supply reel, and the housing may be provided with a take-up reel.

In the above embodiment, the foil transfer device exemplifies the transfer of the foil onto the toner image formed on the sheet, but the present invention is not limited to this, and the foil transfer device transfers the foil to the sheet. Anything can be used as long as it does.

In the above embodiment, the foil film F is composed of four layers, but the present invention is not limited to this, and the foil film may have any number of layers as long as it has a transfer layer and a support layer. good.

In the above embodiment, the film unit is composed of a film cartridge for foil transfer and a holder, but the present invention is not limited to this, and the film unit may not have a holder. Further, the holder may be a holder that non-detachably supports the film cartridge for foil transfer.

Each element described in the above-described embodiment and modification may be arbitrarily combined and carried out.

1 Foil transfer device 13 1st transfer roller 14 2nd transfer roller 21 Housing body 21A Opening 22 Cover 31 Supply reel 41 1st guide shaft 42 2nd guide shaft 43 3rd guide shaft 51 Pressurized roller 61 Heating roller 80 Motor 81 One-way clutch 90 Paper ejection chute 91 Torsion spring F Foil film FU Film unit M1 1st side M2 2nd side S sheet

Claims (6)

A foil transfer device that transfers a sheet to a sheet by stacking the sheet on a foil film containing foil.
A film unit having a supply reel around which the foil film is wound, and a film unit.
A housing body having an opening for attaching / detaching the film unit,
A cover that can be moved between the closed position that closes the opening and the open position that opens the opening.
A heating member that heats the foil film and sheet, and
A pressure member that sandwiches the foil film and sheet between the heating member and
A peeling member that peels the foil film from the sheet by changing the traveling direction of the foil film that has passed between the heating member and the pressurizing member in a direction different from the sheet transport direction.
A first transport roller provided on the cover, which is located downstream of the peeling member in the transport direction and transports the sheet.
A second transfer roller provided on the cover, the second transfer roller that nips the sheet between the cover and the first transfer roller to transfer the sheet.
The nip force of the first transport roller and the second transport roller is a foil film that nips the sheet nipped by the first transport roller and the second transport roller when the cover is moved from the closed position to the open position. A foil transfer device characterized by having a size that can be peeled off from. The cover has a paper ejection chute that guides the sheet downstream of the release member in the transport direction.
The foil transfer device according to claim 1, wherein the paper ejection chute has the second transport roller. The foil according to claim 2, wherein the paper ejection chute has an urging member for urging the second transport roller so that the second transport roller is pressed toward the first transport roller. Transfer device. The foil transfer device according to claim 3, wherein the urging member is a torsion spring and is provided at both ends in the width direction of the sheet. The paper ejection chute has a first surface that is located at the downstream end of the paper ejection chute in the transport direction, intersects the transport direction, and extends in the vertical direction.
The housing body has a second surface that is adjacent to the bottom of the first surface, intersects the transport direction, and extends in the vertical direction.
The foil transfer device according to any one of claims 2 to 4, wherein the second surface does not project in the transport direction with respect to the first surface. With the motor
Further, a one-way clutch that is in a transmission state in which the driving force of the motor is transmitted according to the rotation direction or in a non-transmission state in which the driving force is not transmitted is provided.
The first transport roller is
When the motor is ON, drive is input from the motor via the one-way clutch, and the seat is conveyed in the transfer direction by rotating in the first rotation direction.
When the motor is rotated in the first rotation direction while the motor is OFF, the one-way clutch is in the non-transmission state, so that the first rotation resistance force is applied.
When the motor is turned off and rotated in the second rotation direction opposite to the first rotation direction, the one-way clutch is in the transmission state, so that the second rotation is larger than the first rotation resistance force. The foil transfer device according to any one of claims 1 to 5, wherein resistance is applied.

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