JPH0741998B2 - Drive mechanism for rotating cassette - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a rotary cassette drive mechanism for freely longitudinally and horizontally feeding a sheet, and is used in, for example, an electrophotographic apparatus. It is something.

[Conventional technology]

2. Description of the Related Art Conventionally, for example, a copying machine is provided with a sheet feeding device that feeds a sheet into the copying machine body, and this sheet feeding device includes a plurality of sheet feeding cassettes for each size of the sheet. The conveyance of the paper from the paper feeding device is preferable because the time required for the conveyance is shorter than that of the vertical conveyance in which the conveyance direction is the long side direction of the sheet because the conveyance time is shorter in the conveyance direction in the shorter side direction of the paper. There are some copiers that can feed B4 and even A3 paper horizontally.

On the other hand, if even a large-sized sheet is laterally fed, the photosensitive drum, the conveying roller, the sheet conveying path, and the like in the copying machine become large, which leads to an increase in the size of the apparatus itself and an accompanying increase in cost. Thus, in general, for example B4 and
A3 size large paper is fed vertically, and A4 size and smaller paper is fed horizontally.

However, with such a configuration, in a copying machine having a reduction and enlargement function such as a variable magnification function, for example, for reduction copying, it is necessary to cut paper such as B5R and A4R for vertical feeding, while conveying speed is increased. If you consider, B5 for horizontal feed
A4 size paper cassette is required. Therefore, when various paper cassettes are provided as described above, it is necessary to increase the size of the paper feeding device or replace a plurality of paper cassettes according to the purpose, and increase the size and cost of the device. Or, the operation becomes complicated.

Therefore, as a means for avoiding such a problem, for example, as disclosed in JP-A-56-59245 and JP-A-56-59251, for example, B5 and B5R, and A4 and A
It has been previously proposed that the 4R paper cassette is used in common, and the horizontal and vertical paper feeds are supported by rotating the paper cassette.

[Problems to be Solved by the Invention]

However, in the above conventional structure, when the paper cassette is rotated, the distance between the pickup roller and the cassette is different between the vertical and horizontal directions of the cassette. Therefore, it is necessary to bring the paper cassette closer to the pickup roller side or to bring the pickup roller closer to the paper cassette after the rotation of the paper cassette for lateral feeding is completed. In this case, in addition to the paper cassette rotating mechanism, it is necessary to provide a moving mechanism for the paper cassette or the pickup roller, which complicates the structure and makes it more expensive, and also requires time for movement by the moving mechanism. However, it becomes difficult to feed paper quickly. In particular, when the pickup roller is configured to be moved, the leading edge of the copy sheet is retracted from the position at the time of vertical feeding, that is, the conveyance path is lengthened accordingly, so that the sheet cassette is rotated. There is a problem in that the advantage of doing so is halved.

[Means for Solving the Problems]

In order to solve the above-mentioned problems, the drive mechanism of the rotary cassette according to the present invention is rotatably supported in the rotary cassette unit in order to switch between vertical feed and horizontal feed as needed. And a rotation mechanism for rotating the rotation cassette, wherein one end of the rotation cassette unit is pivotally supported at a predetermined portion of the rotation cassette unit and is rotatably provided in a horizontal direction, and the other end of the arm is pivotally supported. And a rotary cassette rotatably provided around the horizontal cassette, and a rotary cassette unit that is rotatably connected to the rotary cassette in the vicinity of a corner between the vertical feeding unit and the horizontal feeding unit. And a moving member provided so as to reciprocate linearly on the paper side in a direction orthogonal to the paper feeding direction.

[Action]

According to the above configuration, the rotary cassette is rotated by, for example, the linear reciprocating movement of the moving member, and the vertical feed unit or the horizontal feed unit of the rotary cassette is selectively directed toward the feed side of the rotary cassette unit. Will be done. In each of the above-mentioned positions by such a rotation operation, the above-mentioned connecting member is connected in the vicinity of the corner between the vertical feeding paper feeding unit and the horizontal feeding paper feeding unit in the rotary cassette and moves linearly. The leading end of the feeding / feeding unit and the leading end of the lateral feeding / feeding unit at the lateral feeding position are positioned at the same position, and the distance relationship with the pickup roller and the like is secured at each position. Therefore, the moving mechanism of the paper cassette and the pickup roller is not required, and the structure can be simplified. Further, the movement of the rotation center in the rotary cassette due to the fact that the rotary cassette and the moving member are connected and the moving member moves linearly is ensured by the arc movement of the arm.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1 to 5.

As shown in FIG. 2, an automatic document feeder (hereinafter, referred to as ADF) 3 is installed on a platen glass 2 of the copying machine 1. The ADF 3 conveys an original document (not shown) placed on the original document table 3a to a predetermined position on the original platen glass 2 which is predetermined according to the size and the feeding direction (horizontal feeding or vertical feeding). , AD after copying is finished
In addition to the function of ejecting to the outside of F3, for example, when performing double-sided copying, the original is inverted and the original glass 2 is again placed.
The document is conveyed to the specified position above, and the original is ADF3
It also has a function that can be discharged to the outside. It should be noted that switches 4 and 5 for determining the size of the original placed on the original placing table 3a are provided on the original placing table 3a.

Below the platen glass 2, reflection mirrors 6a and lenses 6b are provided.
An optical system 6 composed of ... Is provided. This optical system 6
In addition to the basic function of guiding the reflected light reflected by the original to the photosensitive drum 7, the variable magnification function is also provided, and it is possible to perform not only equal-magnification copying but also enlargement and reduction copying. .

Around the photosensitive drum 7, a cleaner 8, a charge eliminating charger 9, a charging charger 10, a developing means 11 having toner for color copying, and a phenomenon means 12 having black toner.
Is provided, and a series of operations of removal of residual toner, charge removal, charging, exposure (performed by the optical system 6), and development on the photoconductor drum 7 are performed by these means. Has become.

Below the photoconductor drum 7, a transfer charger 13 and a peeling charger 14 are provided, and when a copy sheet (not shown) passes between the photoconductor drum 7 and the transfer charger 13, the transfer charger 13 causes The toner image formed on the photoconductor drum 7 is transferred to the copy paper. Further, the peeling charger 14 separates the copy sheet from the photoconductor drum 7, and the separated copy sheet is transported to the fixing device 18 by the transport belt 17. The fixing device 18 is for fixing the toner transferred to the copy sheet by heating or pressing.

The copy paper that has passed through the fixing device 18 is basically the copy machine 1.
Outside, ie, discharged through the sorter 19 to the cradle 19a ... However, for example, when double-sided copying or composite copying is performed, it is guided to the double-sided composite unit 21 through the paper return path 20. Has become. When performing double-sided copying, the sheet is reversely placed on the intermediate tray 21c via the first transport path 21a in the double-sided synthesis unit 21, and then the delivery roller 21d.
Is sent to the paper feed path 22 at the same time, while the second conveyance path 21b in the double-sided composite unit 21 is used for composite copying.
To the intermediate tray 21c via the first transport path 21a. After being reversely placed on the sheet, the sheet is fed to the sheet feeding path 22 by the feeding roller 21d.

The paper supply path 22 is a path for guiding the copy paper to the photosensitive drum 7, and at the end portion thereof,
A paper top roller 15 is provided for timing the rotation of the photosensitive drum 7 and the feeding of copy paper.
Further, a plurality of paper supply means are connected to the paper supply path 22 so that copy paper is appropriately supplied from each of these means. Specifically, the first fixed cassette 25 and the first rotary cassette unit 2 are sequentially arranged from the lower side of the copying machine 1.
6, the second rotary cassette unit 27, the double-sided synthesizing unit 21, the second fixed cassette 28, the third fixed cassette 29, and the manual feed section 30 are provided. The first fixed cassette 25, the second fixed cassette 28, and the third fixed cassette 29 are detachably attached to the copying machine 1, and the first rotary cassette unit 26 and the second rotary cassette unit 27 are provided. Is provided so that it can be pulled out together with the base plate 31 with respect to the copying machine 1.

In the above-mentioned first and second rotary cassette units 26 and 27, as shown in FIG. 1, a pedestal 31a is fixed on a pedestal plate 31 which is a housing part thereof, and the pedestal 31a is erected on the pedestal 31a. One end side of an arm 32 is pivotally supported by the provided support shaft 31b, so that the arm 32 is supported rotatably in a horizontal direction. A support shaft 32a is provided upright on the other end of the arm 32, and the rotary cassette 35 is rotatably supported by the support shaft 32a. The rotary cassette 35 has a two-plate structure of a paper feed base 33 and a rotary plate 34 arranged on the paper feed base 33. The rotary cassette 35 is stacked on the rotary plate 34 by rotating 90 ° together with the rotary plate 34. It is possible to freely switch the feeding of the copy paper being fed to the vertical feeding or the horizontal feeding. In each of the above-described vertical feeding and horizontal feeding positions, the feeding center of the copy paper is the above-mentioned support shaft 32a.
Rotating cassette 35 by this support shaft 32a so that it passes over
The shaft support position of is set.

The vertical feed unit and the horizontal feed unit of the paper feed base 33 have wall portions 33a and 3a for preventing misalignment of copy sheets.
3b is formed in a bent state. A notch 33c is formed in each of the substantially central portions of the wall portions 33a and 33b.
Is formed so as to extend over the bottom plate of the paper feed base 33 toward the center thereof by a predetermined length, and the lift plate 40 disposed below the paper feed base 33 is the back surface of the bottom plate of the rotary plate 34. It can be abutted against. The specific configuration of the lift plate 40 will be described later.

Further, on the paper feed base 33, wall portions 33f and 33e are arranged so as to face the above wall portions 33a and 33b, respectively. These wall portions 33e and 33f are notches 34a and 34b formed in the rotary plate 34.
And is configured so that the one-sided lifting operation of the copy sheet by the rotating plate 34 is not interfered by the wall portions 33e and 33f.

The vertical feed paper feed unit and the horizontal feed paper feed unit of the rotary plate 34 include an inclined portion that is inclined downward with respect to the main body of the rotary plate 34.
34f and 34g are shaped respectively. A wall portion of the rotary plate 34 is provided at a corner portion of the rotary plate 34 between the non-paper feed unit for the vertical feed paper feed unit and the non-paper feed unit for the horizontal feed paper feed unit.
The supporting piece portion 34c is formed in a bent state so as to extend outward from the upper end of the rotating plate 3d.
A support structure 36 that supports the single point 4 is configured.

On the non-paper feed side of the rotary cassette 35, at a position a little distance from the support structure 36 to the vertical feed paper feed side,
Guide means 37 is provided. This guide means 37 is
When the vertical feed paper feed unit of the rotary plate 34 is lifted, the vertical direction of the rotary plate 34 is guided, while when the horizontal feed paper feed unit of the rotary plate 34 is lifted, it serves as a rotation fulcrum part of the rotary plate 34. is there.

In the paper feed section of the rotary cassette unit 26 (27), a drive motor 41 for rotating the rotary cassette 35 by 90 ° and a rotary drive of the lift plate 40 for lifting the paper by the rotary plate 34 are provided. A drive mechanism 42 for performing the above is provided. In this drive mechanism 42, a gear 41a is fixed to the output shaft of the drive motor 41, and the driving force of the drive motor 41 is increased by the gear group 43 meshed with the gear 41a. It is transmitted to the two clutch 45.

The first clutch 44 is for interrupting the transmission of the driving force for rotating the rotary cassette 35 by 90 °.
Is disposed on the side of the paper feeding section. First clutch
A pulley 46 is fixed to the output shaft 44a of the 44, while a pulley 47 is arranged on the other side of the paper feeding portion of the rotary cassette 35. An endless belt is provided between these pulleys 46 and 47.
48 have been laid. A moving block 50 as a moving member is fixed to a predetermined portion of a portion of the belt 48 that passes under the pulleys 46 and 47, and the moving block 50 reciprocates as the belt 48 moves. ing. A guide shaft 51, which extends horizontally between the pulleys 46 and 47 in a direction orthogonal to the sheet feeding direction, is inserted through a through hole formed in the substantially central portion of the moving block 50. The moving block 50 is linearly guided by 51. A support shaft 50a is formed on the upper part of the moving block 50, and a holding member 52 is rotatably supported on the support shaft 50a. Holding member 52
Is formed with a substantially L-shaped angle portion 52a, and the angle portion 52a is attached to a corner portion of the paper feed base 33 between the vertical feed paper feed portion and the horizontal feed paper feed portion. Position detecting switches 100 and 101 (shown in FIG. 5) are arranged near the one end side and near the other end side of the guide shaft 51, and the position detecting switch 100 is fixed to the angle portion 52a. The position detecting switch 101 is operated by the operating pieces 50b of the moving block 50 by being pushed by the provided switch operating pieces 52b.

On the other hand, the second clutch 45 is for interrupting the transmission of the driving force for the sheet lifting operation on the rotary plate 34.
The output of the second clutch 45 is transmitted to the rotary shaft 54 via the gear group 53. That is, the output of the second clutch 45 is transmitted from each gear in the gear group 53 to the worm gear 53a, and further passes through the wheel gear 53b meshed with the worm gear 53a, so that the output shaft of the second clutch 45 is crossed. -Shaped rotary shaft 54
To be transmitted to.

On the other end side of the rotary shaft 54, a joint portion 55a forming one side of the first coupling 55 is fixed, while on the tip end portion of the rotary shaft 56 rotatably supported on the main body side of the copying machine 1, The joint portion 55b forming the other side of the one coupling 55 is fixed. And, in the gear 56b fixed to the rotating shaft 56,
A gear 57a fixed to the rotating shaft 57 is meshed.
The rotary shaft 57 is parallel to the above rotary shaft 56 and
Similarly to, it is rotatably supported on the main body of the copying machine 1.
A joint portion 58b forming one side of the second coupling 58 is fixed to the tip of the rotary shaft 57. The joint portion 58a forming the other side of the second coupling 58 is fixed to one end side of the lift-up shaft 60 provided in parallel with the rotary shaft 54. The joints 55a and 55b in the first coupling 55
The engagement / disengagement with the rotary cassette unit 26 and the engagement / disengagement with the joint portions 58a and 58b in the second coupling 58 are performed.
It is designed to be carried out by pushing in / pulling out to the main body of the copying machine 1 of (27).

A lift plate 40 is fixed to a substantially central portion of the lift-up shaft 60, and the lift plate 40 is rotated by the rotation of the lift-up shaft 60.
Is rotated to lift the sheet feeding portion of the rotary plate 34. Further, the other end side of the lift-up shaft 60 is merely rotatably supported, and no member is connected to this end portion. Therefore, the joint portion 58a is connected to the joint portion 58b. When the lift plate 40 is lifted, it is completely free, and the lift plate 40 in the lifted state is naturally rotated downward by its own weight.

At the position above the paper feeding unit in the rotary cassette 35,
As shown in FIG. 3, a support base 63 is fixedly installed on the main body side of the copying machine 1. The support base 63 is provided with a paper feed mechanism 62 for feeding the copy paper to the paper supply path 22. Has been done.
The support base 63 has a cutout portion 63a for allowing a part of the intake roller 65 and the paper feed roller 66 of the paper feed mechanism 62 to protrude from below the support base 63, and a part of the paper return plate 81. A notch 63b for projecting from the lower side of the base 63 and a notch 63c for allowing a part of the pressure contact release lever 76 to protrude from the lower side of the support base 63 are formed.

In the paper feeding mechanism 62, the call-in roller 65 is provided above the paper-feeding portion of the rotary cassette 35, while the paper-feeding roller 66 is in parallel with the call-in roller 65 and in the copy paper feeding direction. The rollers 65 and 66 are arranged side by side at a predetermined distance, and are rotated in the same direction by an endless belt 67 spanned at one end side thereof. A support shaft 65a for rotatably supporting the intake roller 65,
A pair of roller arms 68 are interposed between the rotary shaft 66a that transmits the rotational force to the paper feed roller 66 and sandwich both rollers 65 and 66.
68 are laterally installed, and the roller arms 68, 68 rotate about the rotary shaft 66a as a fulcrum, and thus the take-in roller 6
By raising and lowering 5, the contact roller 65 is brought into contact with and released from the copy sheet.

Protrusions 68a and 68a are formed at the ends of the roller arms 68 and 68 on the side of the paper feed roller 66.
The roller arms 68, 68 are rotated upward by pressing the 68a, 68a downward by the sheet feeding operation angle 70. The sheet feeding operation angle 70 is fixed to one end side of the sheet feeding operation shaft 71, and is rotated with the rotation of the sheet feeding operation shaft 71.

A solenoid connecting plate 72 is fixed to the other end of the sheet feeding operation shaft 71. The operation shaft 73a of the sheet feeding solenoid 73 is connected to the elongated hole formed at the tip of the solenoid connecting plate 72, and the forward / backward movement of the operation shaft 73a is performed by the solenoid connecting plate 72, whereby the sheet feeding operation is performed. It is adapted to be converted into a rotational movement on the shaft 71.

Further, as shown in FIGS. 4A and 4B, the paper feed roller 66
A mounting plate 75 is disposed below the mounting plate 75, and the mounting plate 75 is mounted with a reversing roller 74 for returning and conveying the copy sheet by rotating in the same direction as the rotation direction of the sheet feeding roller 66. . The mounting plate 75 is provided so as to be rotatable in the up-and-down direction, and by this rotation, the reverse rotation roller 74 is moved toward and away from the paper feed roller 66. Rotation shaft 74a for transmitting rotational force to the reverse rotation roller 74
Is arranged below and parallel to the rotation shaft 66a of the paper feed roller 66, and an action piece 76a of the pressure contact release lever 76 having a substantially L shape is interposed between these rotation shafts 66a and 74a. It is equipped. The pressure contact release lever 76 is provided so as to be rotatable around a shaft 76c in the vertical direction, and is rotated downward to press the reverse rotation roller 74 and separate it from the paper feed roller 66. Has become.

The connection piece 76b of the pressure contact release lever 76 is connected to one end 77a of the pressure contact release connection member 77, and the pressure contact release connection member 77 rotates horizontally about a shaft 77c (shown in FIG. 3). By doing so, the press contact release lever 76 is rotated. The other end of the pressure contact release connecting member 77
77b is connected to the pin of the operating shaft 80a of the paper return solenoid 80, and the press contact release connecting member 77 is rotated by driving the operating shaft 80a forward and backward.

Further, a paper return plate 81 for returning the copy paper to the rotary cassette 35 side is connected to the operation shaft 80a of the paper return solenoid 80. The paper return plate 81 is provided between the intake roller 65 and the paper feed roller 66 so as to be vertically rotatable around a shaft 81a provided above the pin position of the operating shaft 80a as a fulcrum. When the operating shaft 80a is retracted, the copy sheet (not shown) is rotated in the direction of returning it to the rotary cassette 35 side.

A paper detection switch 82 and a paper non-existence detection switch 83 are provided on the support base 63 and on both sides of the call-in roller 65. The operation pieces 82a.
3a faces below the support base 63 through the notch 63a of the support base 63. The operating pieces 82a and 83a of the switches 82 and 83 are pushed and operated by the sheet feeding portion of the rotary plate 34 in the lifted state. It should be noted that each of the vertical feed paper feed unit and the horizontal feed paper feed unit of the rotary plate 34 has an operating piece 83a of the paper non-use detection switch 83.
The notch part (not shown) is formed corresponding to
When there is no copy paper on the sheet 34, the operating piece 83a passes through the above-mentioned cutout portion so that it does not turn on and only the paper detection switch 82 turns on, while when copy paper is loaded, the detection switch 82a is detected by this copy paper. Both 83 are turned on.

The operation when the rotary cassette 35 shifts from the horizontal feed state to the vertical feed state will be described with reference to FIGS. 5 (a) to 5 (d).

As shown in (a) of the figure, in the horizontal feed position, the horizontal feed paper feed unit of the rotary cassette 35 is located on the paper feed unit side of the rotary cassette unit 26 (27). The moving block 50 and the holding member 52 that constitute the means are located at one end of the guide shaft 51.

The driving force of the drive motor 41 via the first clutch 44 is the pulley.
When it is transmitted to the belt 46, the pulley 46 rotates to rotate the belt 48, and the moving block 50 fixed to the belt 48 is guided by the guide shaft 51 as shown in FIG. Move to the other end.

The rotary cassette 35 is moved by the linear movement of the moving block 50.
Rotates in the A direction. Here, since the rotary cassette 35 and the moving block 50 are connected and the moving block 50 moves linearly, the center of rotation of the rotary cassette 35 moves, but such movement pivotally supports the rotary cassette 35. The arm 32 is secured by rotating in the D direction with the shaft 31b as a fulcrum. In addition, D of the arm 32
The direction rotation is performed until the angle formed by the line X connecting the support shaft 50a of the moving block 50 and the support shaft 32a and the guide shaft 51 becomes 90 °.

Next, as shown in FIG. 7C, when the angle formed by the line X and the guide shaft 51 exceeds 90 °, the rotation direction of the rotary cassette 35 remains A, but the arm 32 is rotated. Will rotate in the C direction. Then, as shown in FIG. 3D, when the moving block 50 reaches the end of the guide shaft 51, the position detecting switch 101 is operated by the operating piece 50b of the moving block 50. The control unit of the copying machine 1 detects the operation of the position detection switch 101, and the control unit cuts off the transmission of the driving force by the first clutch 44, whereby the movement of the moving block 50 is stopped. In such a state, the vertical feed sheet feeding section of the rotary cassette 35 is directed toward the sheet feeding side of the rotary cassette unit 26 (27).

On the other hand, the transition from the vertical feed state to the horizontal feed state in the rotary cassette 35 can be performed by rotating the drive motor 41 in the reverse direction and performing the operation reverse to the above operation. here,
At the same time as the rotary cassette 35 takes the lateral feed state, the holding member 52
The switch actuating piece 52b of FIG. 8 operates the position detection switch 100. Then, the operation of the position detection switch 100 is detected by the control unit of the copying machine 1, and the control unit cuts off the transmission of the driving force by the first clutch 44, whereby the movement of the moving block 50 is stopped. .

Here, in each of the above-mentioned positions driven by the rotation, the end of the vertical feed sheet feeding unit in the vertical feed position and the end of the horizontal feed sheet feeding unit in the horizontal feed position are positioned at the same position. And the paper feed mechanism 62
The distance relationship with is kept constant at each position. Therefore, it is not necessary to add a moving mechanism for the paper cassette and the pickup roller, and the structure can be simplified and the cost can be reduced.

In this embodiment, since the moving block 50 is moved by the belt 48, the moving block 50 can be moved quickly, each position can be switched quickly, and the waiting time of the operator can be minimized. It is possible to reduce it.

〔The invention's effect〕

As described above, the drive mechanism of the rotary cassette according to the present invention is rotatably supported in the rotary cassette unit in order to perform the vertical feed and the horizontal feed by switching as needed. Is a drive mechanism for rotationally driving the arm, one end of which is pivotally supported at a predetermined portion of the rotary cassette unit and is rotatably provided in a horizontal direction, and the other end of which is pivotally supported to be horizontal. A rotary cassette rotatably provided around the rotary cassette is rotatably connected in the vicinity of a corner between the vertical feeding unit and the horizontal feeding unit of the rotary cassette, and is connected to the rotary cassette unit at the paper feeding side. A moving member provided so as to reciprocate linearly in a direction orthogonal to the paper feeding direction.

As a result, it is possible to selectively switch the vertical feeding position and the horizontal feeding position in the rotary cassette as needed, and to increase the size of the paper feeding device by providing various paper cassettes and to achieve a plurality of paper cassettes. Therefore, it is possible to prevent the apparatus from becoming large and costly, or the operation from becoming complicated, due to the replacement. In addition, since the end of the vertical feed unit and the end of the horizontal feed unit in the rotary cassette are secured at fixed positions, it is not necessary to add a moving mechanism for the paper cassette and the pickup roller, and the structure is improved. This has the effect of simplifying and reducing the price.

[Brief description of drawings]

1 to 5 show an embodiment of the present invention. FIG. 1 is a perspective view showing a drive mechanism of the rotary cassette unit. FIG. 2 is a front view showing the schematic internal mechanism of the copying machine. FIG. 3 is a plan view showing the paper feed mechanism. FIG. 4 (a) is a side view of the paper feed mechanism, and FIG. 4 (b) is a side view showing a state in which the paper return plate and the like are operated in FIG. 4 (a). 5 (a) to 5 (d) are plan views showing the rotating operation of the rotating cassette. 26/27 is a rotary cassette unit, 32 is an arm, 33 is a paper feed base, 34 is a rotary plate, 35 is a rotary cassette, 50 is a moving block (moving member), 52 is a holding member (moving member), and 51 is a guide shaft. , 48 is a belt

Claims (1)

[Claims] 1. A drive mechanism for rotatably driving a rotary cassette rotatably supported in a rotary cassette unit in order to switch between vertical feed and horizontal feed as needed. An arm, one end of which is rotatably supported at a predetermined portion of the rotary cassette unit and is horizontally rotatable, and a rotary cassette, which is rotatably supported at the other end of the arm and rotatable horizontally. The rotary cassette is rotatably connected in the vicinity of a corner between the vertical feed paper feed unit and the horizontal feed paper feed unit, and linearly reciprocates in the direction orthogonal to the paper feed direction on the paper feed side of the rotary cassette unit. And a moving member provided as described above.