JPS6123036A - Cassette type paper feed device in recording apparatus - Google Patents

Abstract

PURPOSE:To make the manipulatability of a cassette type paper feed device, by providing such a mechanism that a stored cassette may be projected from a recording apparatus body such that the stored cassette is simply pushed by human fingers. CONSTITUTION:A cassette 12 on which sheets are stacked, is inserted into through a loading opening 14, and is pushed in the direction of the arrow A until the movement of the cassette is inhibited. At this time, if the pushing force is released, the cassette is retracted in the direction of the arrow B and is locked at its paper feed position. If sheets are completely consumed, the cassette 12 is pushed inward by a human hand inserted through the loading opening 14 until the cassette is inhibited from further moving, so that the cassette 12 is pushed back in the direction of the arrow B up to a position 12A. Then, the cassette is held at both sides by both hands and is completely pulled out from the cassette loading opening 14. With this arrangement, the cassette is pushed out from the loading opening 14 by such a simple operation that human fingers touches on and off at the cassette, thereby the manipulation of the cassette type paper feed device may be simple.

Description

DETAILED DESCRIPTION OF THE INVENTION (Technical Field) The present invention relates to a cassette paper feeder in a recording apparatus such as a copying machine, facsimile, or printer.

(, Prior Art) The cassette paper feeding device of the above-mentioned recording device stores sheet-like paper in a cassette, attaches this cassette to the main body of the device, and feeds the paper from this cassette toward the processing section as appropriate. It is.

Conventionally, in such a cassette paper feeding device, a cassette is detachably attached to a recording device.

In such a cassette paper feeding device, a portion of the cassette is attached to the recording device so as to protrude from the recording device.

This cassette paper feeder has the problem that not only does the area occupied by the main body of the recording apparatus become larger due to the protrusion of the cassette, but also that the protruding portion becomes a hindrance.

In order to solve this problem, a cassette paper feeding device has been proposed in which the cassette is housed within the main body of the recording apparatus. An example of this is shown in FIG.

This cassette paper feeding device is provided with a cassette storage section 3 in which the entire cassette is housed inside a recording device main body 1, and an inlet/outlet opening 4 for storing the cassette 2 is provided in the cassette storage section 3. It has been established.

In a paper feeding device in which the cassette is stored inside the recording device main body, when removing the cassette 2 from the storage section 3,
First, insert the finger of one hand into the handhold part 5 and pull out the cassette until a part of it protrudes outside the main body of the device, and then,
It is necessary to grasp both sides of the protruding cassette with both hands and take out the entire cassette outside. That is, with this device, in the first step, it is necessary to put one hand on the handle to pull out the cassette and make a part of it protrude, and then in the second step, it is necessary to change the grip and completely remove the entire cassette with both hands. . Removing the cassette by changing the cassette in this manner is not easy to operate.

(Objective of the Invention) An object of the present invention is to provide a cassette paper feeding device with good operability that eliminates the drawbacks of the conventional cassette paper feeding device.

(Structure of the Invention) The present invention is characterized by having means for moving a cassette stored in the recording apparatus main body from a stored position to a position where a part of the cassette protrudes outside the apparatus main body.

"Embodiments" The present invention will be described in detail below based on illustrated embodiments.

First Embodiment A first embodiment of the present invention will be described based on FIGS. 1 to 4.

FIG. 1 is a schematic diagram of a recording apparatus equipped with a cassette feeding device of the present invention, and inside the recording apparatus main body 11,
A cassette storage section 13 is provided in which the entire cassette 12 can be stored, and this storage section 13 is provided with a cassette attachment/detachment port 14 through which the cassette can be taken in and taken out. FIG. 1 shows the cassette 12 in the paper feeding position. A paper feed roller 15, a pair of transport rollers 16, and a push-up lever 17 are provided near the storage section 13, respectively.

The cassette storage section 13 is provided with rail-shaped guide sections 19+19 on both sides, as shown in FIG.
Furthermore, a rack 2o is provided on the bottom surface of the storage section along the direction in which the cassette 12 is loaded and unloaded, and a pinion 33, which will be described later, is engaged with this rack 2o.

The cassette 12 is movably provided in the cassette storage section 13. The cassette 12 is provided on both sides with retaining parts 21.21 that fit into the guide parts 19.19. This cassette 12 has the push-up lever 17 at the bottom.
A hole 22 is provided into which the sheets S enter, and an intermediate plate 23 on which the sheets S are stacked is dropped into the hole 22.

The front wall 24 of the cassette 12 is provided with a fully driven pinion unit 30 as a cassette moving means. As shown in FIG. 3, this pinion unit 30 is composed of a complete set 34 and a pinion 33.

FIG. 3 shows an exploded perspective view of a pinion unit 300. This pinion unit has two housings 31 and 32 that fit into each other, and a support shaft 35 is rotatably supported in the center of the housings 31 and 32. , a pinion 33 is fixed to this support shaft 35. A portion of this pinion 33 is made to protrude to the outside from an open portion 32a of the housing 32. A complete set 34 is wound around the support shaft 35, and the inner end is fixed to the shaft and the outer end is fixed to the ring 31a of the casing 31. A partition plate 36 is provided between the complete collection 34 and the pinion 33. Complete collection 34 pieces, pinion 33
It is wound in the direction in which it is wound up when it rotates in the direction of arrow a.

A spiral cam groove 3 is provided on the side surface of the pinion 33 on the door side.
7 is formed. This cam groove 37 has a locking member 3
One end of the member 8 is engaged with the other end of the member 8, and the other end of the member is swingably supported by a part of the housing 32.

This locking member 38 is pressed against the pinion side, that is, against the cam groove 37, by the partition plate 36.

A heart cam groove 39 is continuously provided in the cam groove 37 . Part of the spiral cam groove 37 and the heart cam? 1Ii 39 is shown expanded in a straight line in FIG. The heart cam groove 39 includes a first groove part 40 having the same depth as the cam groove 37, a second groove part 41 formed one step deeper than this groove 40, and a locking part formed one step deeper than this second groove part 41. The third groove 42 is continuous with the stiffness locking groove 42 and is formed one step deeper than the groove 42.
It consists of a groove part 43 and a fourth groove part 44 which is connected to the third groove part 43 and is formed to become gradually shallower toward the confluence part 45 with the cam groove 37.

The position of the locking groove 42 of the heart cam groove 39 is set at a distance L1 from the starting position of the cam groove 37 (the inner end in FIG. 3). This distance 1111L14-!
, the length is set to correspond to the distance that the locking member 38 relatively moves within the cam groove 37 when the cassettes 1 and 2 move to the paper feeding position after engaging the binion 33 with the rack 20. ing.

Furthermore, four parts 41a and 43a of the second groove part 41 and the third groove part 43 in the groove 39 are connected to the locking groove part 42.
It is provided at a position separated by a distance L2 from. The depth of the cassette storage section 13 is such that the cassette can move from the sheet feeding position in the direction of the arrow by a distance corresponding to a distance L2 or more.

The operation of this embodiment will be explained below.

A cassette 12) containing a plurality of sheets stacked on top of each other is inserted through the cassette loading/unloading port 14, and then pushed in the direction of the arrow until it passes the paper feed position and is stopped from moving. Push it all the way.

When the cassette 12 is pushed in the direction indicated by the arrow, the pinion 33 engages with the rank 20 and rotates in the direction indicated by the arrow a in FIG. Move it against. In other words, the locking member 38 moves relatively within the cam groove 37. Hereinafter, for convenience of explanation, the relationship between the lock member 38 and the cam groove will be explained by moving the lock member 38 relative to the cam groove. When the cassette 12 advances through the cassette storage section 13 and reaches near the paper feeding position, the locking member 38
The first groove 40 of the first cam groove 39 is entered from the cam groove 37 . Then, the locking member 38 moves from the first groove part 40 to the second groove part 41, and is warped.

When reaching the end 41a, the locking member is prevented from moving. That is, the pushing operation of the cassette 12 is prevented by the locking member 38 abutting against the end portion 41a.

At the point when the movement of the cassette is prevented, this cassette 12
When the pushing force on the cassette 12 is released, the whole bone 34
The releasing force causes the robot to retreat in the direction of arrow B. At this time, the locking member 38 moves a distance L2 in the second groove 41 from the end 41a toward the locking groove 42, and is locked in the locking groove 42 as shown by the dashed line 38A in FIG. . By locking the locking member 38 in the locking groove 42, the cassette 12 is locked and held at the paper feeding position of the cassette storage section 13.

The entire cassette (7) 12) held at the paper feeding position is stored in the cassette storage section 13. At this time, the rear end 12a of the cassette is inserted into the cassette loading/unloading port 14 with your finger. It is placed in a position where it can be pushed and moved.

Thereafter, when an operating member (not shown) of the recording device is operated, the sheet s&z push lever 1 in the cassette 12 is activated.
7, it is pushed up and brought into contact with the paper feed roller 15, and is brought into a state where paper can be fed. Next, the paper feed row 215 is rotated, and the notebooks are loaded one by one into cassettes.
The paper is sent out from the tray 12, held between a pair of transport rollers 16, and fed toward a processing section (not shown).

For example, when the cassette 12 runs out of sheets, if you insert your finger through the dislocation 14 and push the cassette 12 from the paper feeding position to the position where its movement is blocked, the cassette 12 will be removed by the action of the whole bone 340. It is pushed back in the direction of arrow B and moved to the position indicated by reference numeral 12A in FIG.

When the cassette 12 placed at the paper feeding position is pushed in the direction of the arrow, the locking member 38 moves from the position where it is locked in the locking groove 42 indicated by the dashed line 38A to the third groove 43. After moving a distance L2, it is stopped by the end 43a. This blocked position is a position where movement of the cassette 12 is prevented.

When the pressing force on the cassette is released, the pinion 33 moves toward the rack 2 in the opposite direction to the arrow a, depending on the number of solutions of the whole bone 34.
Rotates while meshing with zero. Binion 33 is rack 2
By rotating while engaging with cassette 1
2 is guided by the guide member 19 and moved in the direction of arrow B, and is moved to a non-sheet feeding position indicated by reference numeral 12A in FIG. When the cassette 12 moves in the direction of arrow B, the locking member 38 moves from the third groove 43 to the fourth groove 44,
It merges into the cam groove 37 from the merge part 45, moves along the cam groove 37 in the direction of arrow a, and reaches the starting position of the cam groove 37.

The cassette 12, which has been moved to the non-sheet feeding position indicated by the reference numeral 12A, should be held on both sides with both hands and pulled out entirely from the cassette loading/unloading port 14.

Second example This embodiment will be explained based on FIG.

This embodiment is characterized by the cassette moving means, so this moving means will be explained. Note that the configuration of the cassette and cassette storage section is the same as that of the first embodiment described in FIG. 2, except that the binion unit 30 and rack 20 are removed, so a description thereof will be omitted.

The cassette moving means 50 of this embodiment includes a main body 51 and a rod 52 slidably provided on the main body. The main body 51 is open at one end, and has an extensible spring 53 housed inside. A flange 54 for attaching the main body to the recording apparatus main body 11 is provided at one open end 55 of the main body 51 .

At both ends of the rod 52 are spring seats 56 that fit into the main body.
Abutting portions 57 are provided, with which the front wall 24 of the cassette and the front wall 24 of the cassette abut. The rod 52 has a cross-shaped cross section, and a cam groove 37 is formed in the upper surface of the rod in the longitudinal direction of the rod. A )S-) cam groove 39 is connected to one end of the cam groove 37. This heart cam groove 39 is
One main body 5 having the same structure as the cam groove shown in FIG. 4 described above.
A hole 51a is formed near one end 55 of the locking member 38 to swingably support the base end of the locking member 38.

Further, a window hole 58 is bored through the main body 51, and the free end of the locking member 38 passes through the window hole 58 and is loosely fitted into the cam groove 37. This locking member 38 has a presser member 59 elastically engaged with the circumferential surface of the one end portion 55.
This gives it the habit of coming into contact with the bottom of the cam groove.

At the other end of the main body 51 is a screw 6 for adjusting the strength of the spring 53.
0 is set.

The moving means 50 positions the abutting portion 57 of the rod within the cassette storage portion 13 and moves its seven flange 54 to the recording device 11.
It can be fixedly attached to the back wall 13a (see FIG. 11) of the cassette storage section 13.

The moving means 50 attached to the back wall 13a moves the rod 52, by the elastic force of the spring 53, into the pushed position in the cassette storage section 13 as shown in FIG. Move by compressing the spring 53,
The locking member 38 can be placed in a locked position with the locking groove 42.

Now, the rod 52 is moved to the fifth position by the elastic force of the spring 53.
As shown in the figure, it is pushed out in the direction of arrow E.

The abutment portion 57 is located at a position protruding into the cassette storage portion 13. Insert the cassette 12 into the cassette storage section 13 through the cassette attachment/detachment port 14 and push it in.
The rod 52 is slid in the direction of arrow C while compressing the spring 53 by abutting against the abutting portion 57 protruding into the cassette housing. At the same time, the lock member 38 moves relatively within the cam groove 37. When the movement of the cassette 12 pushed into the cassette storage section 13 is prevented, the pressing force on the cassette is released, and the cassette is held at the paper feeding position shown in FIG.

The lock member 38, which moves relatively within the cam groove 37, moves from the cam groove 37 to the upper cam groove 39, and from the first groove 40 to the second groove 41, as shown in FIG. It abuts against its end 41a. This position is a position where the cassette 12 cannot be pushed any further.

When the pushing force on the cassette 12 is released, the locking member 38 is pushed back a distance L2 to the locking groove 42 and locked, as shown by reference numeral 38A in FIG.

This position is the paper feeding position of the cassette 12.

Next, in order to retract the cassette 12 from the paper feeding position to the non-paper feeding position, the cassette 12 may be pushed in the direction of the arrow again. Then, the locking member 38 is shown at 38A in FIG.
It moves from the lock position shown by to the third groove 43 and abuts against the end 43a of this groove. This position is cassette 1
2 is pushed into the innermost part of the cassette storage section J3. When the pushing force on the cassette 12 is released at this position, the rod 52 is pushed out in the direction of the arrow E by the force of the compressed spring 53, moving the cassette 12 that is abutting against the abutting portion 57 away from the paper feeding position. It is moved in the direction B and pushed to the non-paper feeding position indicated by reference numeral 12A in FIG. When the cassette 12 moves in the direction of arrow B, the locking member 3
8 reaches from the third groove part 43 to the fourth groove part 44, further passes through the merging part 45, merges with the cam groove part 37, and moves to the starting position.

After the cassette 12 has been moved to the position indicated by the eleventh symbol 12A, the entire cassette 12 can be pulled out from the cassette attachment/detachment opening 14 by holding both sides of the protrusion with both hands.

Third embodiment This embodiment will be explained based on FIGS. 6 and 7.

This embodiment is characterized in that the cassette is automatically loaded and unloaded into the cassette storage section.

FIG. 6 shows a partial cross section of the recording device, showing the cassette in the paper feeding position.

In this embodiment, the configurations of the cassette storage section 13, paper feed roller 15, and push-up lever 17 are the same as those of the above two embodiments, so the same reference numerals are given and the explanation #JA will be omitted.

The cassette attachment/detachment port 14 is provided with an opening/closing lid 61 that is swingably supported on the upper portion thereof. Near the opening/closing lid 61 and above the cassette storage section 13, there is an opening/closing lid 6.
A second switch SW2 is provided which is pushed and turned on in conjunction with this when the switch 1 is swung backwards.

The cassette storing section 13 is provided with a roller 62 for moving the cassette by coming into contact with the upper surface 12a of the sumo wrestler's kit. This port 62 is connected to the output shaft of the motor M. A first switch SW is provided on the side wall of the recording apparatus main body 11 to be operated when taking out a cassette.

is provided.

The motor M is connected to a control circuit as shown in FIG. The control circuit is a circuit for rotating the motor M in the normal and reverse directions, and a first switch SW1 and a second switch SW2 are respectively connected to this circuit. The motor M is configured to automatically stop when a load exceeding a certain level is applied to the output shaft or when the load is released. When the second switch SW2 is turned on, the control circuit has the function of self-maintaining the on state and rotating the output shaft of the motor M in the direction of the dashed arrow in FIG. 6, that is, in the forward direction. In addition, the same circuit maintains this state by itself when the first switch SW is turned on, and
It functions to rotate the output shaft of the motor M in the direction of the solid line arrow, that is, to reverse the rotation.

When the cassette 12 is inserted through the cassette attachment/detachment port 14, the tip of the cassette 12 pushes open the opening/closing lid 61, and in conjunction with this, the second switch SW2 is turned on.

As a result, the control circuit rotates the motor M in the normal direction and rotates the roller 62 in the direction of the broken line. And cassette 12
When the cassette 12 is pushed to a position where its upper surface 12a abuts against the roller 62, the cassette 12 is transported by the rotating roller 62 in the direction of the arrow in the cassette storage section 3. and,.

When the cassette 12 is prevented from moving in the incoming direction by the back wall 13a of the cassette storage section 13, the motor MK is subjected to a load greater than the load that was being driven so far, so the motor MK is stopped. This cassette 12 is on the back wall 13.1
The position where the movement is prevented is the paper feeding position.

Next, when pulling out the cassette 12, the first switch SW is turned on. This switch SVV.

Turning on causes the control circuit to reverse the motor M.

By rotating the motor M in the reverse direction, the roller 62 is rotated in the direction of the solid arrow, and the cassette 12 is sent in the direction of the arrow B from the paper feeding position. The cutter 2 pushes open the opening/closing lid 61 and causes a part of it to protrude outside. When the cassette 12 and the roller 62 are no longer engaged, the motor M is released from the load that has been applied to it and automatically stops.

The cassette 12, which is partially protruded from the cassette attachment/detachment port 61, is grasped with both hands to pull out the entire cassette storage section 13.

In this embodiment, an opening/closing lid 61 is provided on the cassette loading/unloading port 14, and the second switch SW2 is operated by this.
The second switch SW2 may be actuated directly from the cassette 12 without providing an opening/closing lid. However, the action of pressing the stored cassette with a finger or the first switch SW,
This can be done with a simple action like turning on the switch. Therefore, it is possible to provide a cassette paper feeder with good operability.

[BRIEF DESCRIPTION OF THE DRAWINGS] Fig. 1 is a schematic sectional view of a cassette paper feeding device showing an embodiment of the present invention, Fig. 2 is a perspective view of essential parts of the paper feeding device, and Fig. 3 is a schematic sectional view of a cassette paper feeding device showing an embodiment of the present invention. FIG. 4 is a perspective view of the cam groove and the first cam groove developed in a straight line; FIG. 5 is a perspective view of a damper unit showing another embodiment of the present invention; FIG. FIG. 6 is a schematic sectional view of a cassette paper feeder showing still another embodiment of the present invention, FIG. 7 is a motor control circuit diagram of the cassette paper feeder, and FIG. 8 is an example of a conventional cassette paper feeder. It is a schematic sectional view showing 12... cassette, 13... cassette storing part, 14
...Cassette loading/unloading port, 19...Guide section, 30...
Binion unit, 50@1 damper unit, 62.
...Roller, M...Motor, SW, ...1st switch, D...Control cape circuit

Claims (1)

[Claims] A cassette for stacking sheets, a cassette opening provided in the main body of the recording apparatus for taking the cassette in and out, and a cassette inserted through the cassette loading/unloading opening, and the entire cassette is placed in the cassette storage section. the cassette, the cassette has a guide portion that movably guides the cassette between a paper feeding position and a non-paper feeding position where at least a part of the cassette is retracted from the paper feeding position and protrudes from the cassette attachment/detachment opening. A cassette storage part that can store the whole thing,
and cassette moving means for moving the cassette placed at the paper feeding position toward the non-paper feeding position.