JPS60153351A - Paper feeding apparatus for copying machine, etc. - Google Patents

Abstract

PURPOSE:To simply feed the desired kind of business forms without exchanging accommodation containers by arranging a plurality of business-form accommodating containers in the upper and lower parts and selecting one among said accommodation containers and forward pushing-out the selected container and allowing said container to be engaged with a single business-form feeding mechanism. CONSTITUTION:A guide member 15 is raised and lowered by turning a screw member 11 by a motor 14, and onto one side of the screw member 11, and the accommodation containers 22a-22e for accommodating the business forms having different size are loaded through wheels 21 onto the supporting members 20a-20e arranged in tilt form, keeping intervals in the vertical direction in an accommodation shelf 19. A magnetic- pole rail 30 consisting of the magnetic pieces arranged at a prescribed interval in the longitudinal direction along the delivery parts of the accommodation containers 22a- 22e is erected, and a linear motor head 32 equipped with a feed roller 36 is arranged in slidable ways along the magnetic-pole rail 30. The selected accommodation container among these containers 22a-22e is pushed-out forward through the rightward advance due to the revolution of the gear 18 of a rack shaft 17 supported onto the guide member 15.

Description

Detailed Description of the Invention (Technical Field) The present invention enables a desired type of paper to be fed without replacing the paper feed cassette.

The present invention relates to a paper feeding device used in copying machines, etc., which suppresses the complexity of the structure of the paper feeding mechanism.

(Prior Art) For example, there is one shown in FIG. 1 as a conventional paper feeding device. This paper feeding device includes paper feeding cassettes 2 and 3 that are detachably attached to the copying machine main body 1 (in the direction of the arrow shown in the figure), and one of the topmost sheets of paper 4a and 4b set in each paper feeding cassette. paper feed rollers 5a and 5b that feed paper, and paper feed roller 5a.

5b while the surface is in contact with the separating rollers 6a, 6b and 9 separating rollers 6a, 6b which are rotated in synchronization with the separation rollers 6a, 6b.

Separation hell that rotates in the opposite direction to the rotational direction of each roller) 7a
, 7b, and feed rollers 8 and 9 that transport the fed paper toward the transfer position. In addition,
Although FIG. 1 shows an example in which two paper feed cassettes can be installed at the same time, most copying machines usually have two or three paper feed cassettes installed.

In the above configuration, it is assumed that the paper feed cassettes 2 and 3 are loaded with paper of the required size.

Attach it to the copying machine main body 1 from the direction of the arrow in the figure. For example, if you say that paper cassette 2 has A4 size and paper cassette 3 has B5 size, then if the original is A4 size and the reduction ratio is 1, paper cassette 7 and 2 cannot be shown. selected by the control section.

As the copying operation progresses, the paper feed roller 5a and the separation roller 6a start rotating, and a sheet of paper is transferred from the paper feed cassette 2 to the separation roller 6 by the frictional force caused by the pressure of the paper feed roller 5a.
Move to a. The taken out paper is fed between the separation roller 6a and the separation belt 7a, and the topmost sheet of paper is sent to the feed roller 8. The above is the paper feed cassette, 7.
Although the operation is the same in the paper feed cassette 3, the explanation thereof will be omitted.

However, in conventional copying machine paper feeding devices.

Since only two or three of the paper feed cassettes prepared for each paper size can be installed, the number of selectable paper types is limited to nine, making it inconvenient to use.

In particular, recently, copiers that can perform various types of variable magnification copies have appeared, but with these models, cassettes must be replaced frequently, which is even more inconvenient. There is.

(Object and structure of the invention) The present invention has been made in view of the above.

In order to be able to feed paper of the desired type (size, paper quality, etc.) without having to replace the paper feed cassette, etc., and to reduce the complexity of the configuration of the paper feed mechanism, it is possible to feed multiple types of paper of different types. The present invention provides a paper feeding device used in a copying machine, etc., in which two paper feeding power centers are arranged one above the other, and one paper feeding cassette is selected and pushed forward to engage with one paper feeding mechanism. be.

(Example) Hereinafter, nine paper feeding devices according to the present invention will be described in detail.

FIG. 2 shows an embodiment of the present invention, which includes screw members 11 disposed vertically at predetermined intervals in the copying machine main body or a separate case, a bearing 12a that rotatably fixes the screw members 11, and 12b and.

and a bevel gear 13 provided at the end of the screw member 11.

a motor 14 that rotates the screw member 11 via a bevel gear 13; a guide member 15 that includes a member that engages the screw member 11 and moves in the axial direction according to the amount of rotation of the screw member 110; a pair of bearings 16 fixedly installed on the front surface of the guide member 15 at a predetermined interval in a direction perpendicular to the rack shaft 17; , a gear 18 that meshes with the rank portion of the rack shaft 17 and horizontally moves the rack shaft 17 according to the rotation amount and direction of the gear 18; and a storage shelf 19 with a four-post structure installed vertically in parallel with the screw member 11. Support members 202 to 20e are provided with a predetermined slope on both sides of the storage shelf 19 and are mounted at predetermined intervals in the vertical direction, and wheels 21 are provided on the lower surface of each of the support members 20a to 20e to be movable. A light receiving section 23 is attached to the paper storage containers 22a to 22e to be placed and to the screw member 11 side of the supporting members 20a to 20e and outputs an arrival confirmation signal of the guide member 15 when receiving light.
a to 23e, and are provided on the storage shelf 19 side of the guide member 15, and the light receiving portions 3a to 23 are provided in accordance with the movement of the guide member 15.
A light emitting unit 24 that sequentially irradiates light to e, and support members 20a to 20a.
light receiving sections 25a to 25e that are attached to the paper dispensing side of each of the paper feeders 20e and generate an output signal when receiving light; a magnetic pole rail 30 in which magnet pieces are arranged at predetermined intervals in the longitudinal direction; and the magnetic pole rail 30 is fixed to the main body. Mounting members 31a to 31d
a linear motor head 32 that forms a pair with the magnetic pole rail 30 to form a linear motor and moves on the magnetic pole rail 30 when energized; a guide member 33 attached to the linear motor head 32; A guide plate 34 is provided in a direction substantially perpendicular to the direction and guides the paper dispensed from one of the paper storage containers 22a to 22e and sends it out in a certain direction; an arm 35 that rotates toward the selected paper storage container by a drive mechanism; and a feed roll 36 that is provided at the tip of the arm 35 and rotationally driven by a drive mechanism that is provided on the guide member 33.

A transport roll 37 is attached to the arm 34 or the guide member 33 and is rotationally driven by a drive mechanism, and feeds the paper discharged by the feed roll 36 into the guide plate 34; 2
A light emitting section 38 that projects light onto the receiving and originating sections 25a to 25fl when the feed roll 36 is present at the sheet discharging position 2e, and a light emitting section 38 that is arranged parallel to the magnetic pole rail 30 at a predetermined distance position and at regular intervals in the vertical direction. Chargers 418 to 41d are installed and generate electric charges that attract the paper discharged from the guide plate 34 by electrostatic attraction, and a mounting path is connected between the paper discharge side of the guide plate 34 and the chargers 412 to 41d. An endless belt-like chargeable conveyance member 42 installed in an L-shape as a part of the transport member 42, and rotating rollers 43a to 43e that extend the Ill conveyance member 42 at four points and rotate it.

A transport roll 44 that rotates in pressure contact with the rotating roller 43a and sends out the paper transported by the transport member 42 toward the photoreceptor, etc., and a transport roller 44 that is arranged close to the back surface of the transport member 42 between the single-rotation rollers 43a and 43C. a charge detector 45 that detects the charged state of the conveying member 42; a static eliminator 46 installed near the rotary roller 43c to eliminate the charge on the paper caused by the conveying member 42; A transport roll 47 that sends out the paper transported from the transport roll 44 toward the photoreceptor side and a transport roll 47 arranged so as to be able to come into contact with the rotating roller 43C in order to prevent the paper coming out of the 2M transport roll 47 from being caught in the rotating roller 43c. A motor 49 rotates the paper peeling member 4 and the one-rotation roller 43b provided at a predetermined time.
, a power supply unit 50 that supplies power to each of the chargers 413 to 41e and the static eliminator 46;
Control is performed to charge the transport member 42 to a certain level of potential based on the output signal of
and motor 14. based on the output signals of 25a to 25e.
Drive motor 49 for linear motor head 321 rotating roller 43b. A control section 51 that controls the drive motor of the gear 18, the rotation motor of the arm 35, the motor for driving the feed roll 36 and the transport roll 37, and also controls the power supply section 50, and instructions for setting the paper size and starting copying. The console 52 is configured to perform operations on the control unit 51.

FIG. 3 shows details of the guide member 15. A bearing 16 is provided on one surface of the guide member 15 that engages the screw member 11,
A rack shaft 17 is rotatably supported by this bearing, and a gear 18 meshes with the rank surface of the rank shaft 17. The gear 18 is pivotally attached to a motor 54 that is fixed to the guide member 15 by a fixture 53, and the rank shaft 17 moves horizontally forward or backward depending on the direction and amount of rotation of the gear 18.

The control unit 51 includes a charge detector 45. Light receiving parts 23a to 23e
, 25a to 25e and the console 52 to the data bus 50a, and control for moving the guide members 15 and 33 to the front of the paper storage container in which paper of a specified size is set;
A ROM51c stores programs for performing on/off control of each drive motor, on/off control of a charger, etc. in a certain order or under certain conditions, and a program for copying. CPU51 d that executes predetermined processing;
A RAM 51e that temporarily stores the results of calculation 1 judgment etc. and various data by d, an output interface 51f that outputs control commands etc. to the power supply section 50, and drives each of the motors based on the output signal of the output interface 51f. It is composed of a driving section 51g.

As shown in FIG. 4, the linear motor section has a magnetic pole rail 30.
Two magnet strips 39 are arranged at a predetermined interval, and the coil portion of the linear motor head 32 is arranged opposite to this row of magnet strips. A guide member 33 is attached to the linear motor head 32.
is provided. Also.

A locking mechanism (not shown) is provided to prevent the linear motor head 32 from falling by itself when power is not applied (unlocked when power is applied).

In the above configuration, sheets of a plurality of required sizes are stored in the paper storage containers 222 to 22e for each size, and these paper storage containers 22a to 22e are placed on support members 20a to 20e designated according to the size. be placed. The placed paper storage containers 22a to 22e are supported by support members 20a to 22e.
Since the support member 20e has an inclination, the support members 20a~
It is locked to the inclined end of 20e. In this state, when the size of the paper to be fed is specified by the console 52, the control unit 51, upon receiving the specification, lights up the display lamp of the corresponding size on the console 52.

At the same time, the motor 14 and the linear motor head 32 are energized to rotate the screw member 11 and move the linear motor head 32. As the screw member 11 rotates, the guide member 15 rises from the A position, and the guide member 1
5, the light from the light emitting section 24 is sequentially transmitted to the light receiving section 23a.
~23e is received. In addition, the linear motor head 32
At the same time, the guide member 33 begins to rise, and with this movement, light from the light emitting section 38 is sequentially received by the light receiving sections 258 to 25e. An output signal is output from each of the light receiving sections (any one of 23a to 23e and one of 2-5a to 25e) responsive to the paper size stored in advance in the nonvolatile memory section in the RAM 51e of the control section 51. At the same time, the guide members 15 and 33 are stopped.

For example, if paper in the paper storage container 22C is selected, the light from the two light emitters 24 is received by the light receiver 23c, and at the same time the motor 14 stops driving, and the light from the two light emitters 38 is transmitted to the light receiver 25C. At the same time as the light is received, power supply to the linear motor head 32 is stopped, and the guide members 15 and 33
movement stops. The control unit 51 drives the motor 54 at the same time as the motor 14 is stopped, rotates the gear 1, moves the rack shaft 17 toward the paper storage container 22c, and causes the paper storage container 22c to protrude from the storage shelf 19. Then the control section 5
1 rotates the arm 34 counterclockwise to bring the feed roll 36 into contact with the uppermost sheet of paper stored in the paper storage container 22C. When the rotation of the arm 35 is completed, the control unit 51 displays a message such as "Ready to copy" on the console 52 to notify the operator that paper feeding preparations are complete.

When the operator presses the copy start button on the console 52, the motor 49 that drives the one-rotation roller 43b is started, and Il! As the feeding member 42 rotates, the charger 4.
1a to 41e and the static eliminator 46, the feed roll 36 and the conveyance roll 37 are rotated. As the feed roll 36 rotates, one sheet of paper on the top surface of the paper storage container 22e is delivered toward the guide plate 34.

The paper discharged onto the guide plate 34 is guided within the guide plate 34 by a conveyance roll 37 and sent out toward a conveyance member 42 . The paper that has left the guide plate 34 is transferred to the circulating conveyance member 4.
The tip hits the surface of 2.

The sheets are bent in the running direction of the conveying member 42, and are successively pulled out from the guide plate 34 while sticking to the surface of the member, and finally the entire sheet is conveyed in close contact with the surface of the conveying member 42. Since the surface of the conveyance member 42 is electrically charged, the electrostatic attraction force prevents the paper from separating. The paper transported by the transport member 42 is transported by transport rolls 44 and 4.
7 to a paper transport system for delivering the paper to a transfer section (not shown). At the position leaving the transport roll 47
The first static eliminator 46 performs static neutralization to eliminate the electrical charge on the paper. The purpose of this static elimination is to prevent toner from not adhering properly due to the charged paper being sent to the transfer section.

When the original is changed or the magnification is changed and the paper size is changed, the control unit 51 drives the motor and linear motor to move the paper from the front of the paper storage container before the change to the paper storage container after the change. The guide members 15 and 33 are moved to the front while monitoring each output signal of the light receiving sections 23a to 236 and 25a to 25e, and at the same time, a copy prohibition indicator light is lit on the console 52 while the guide members 15 and 33 are being moved. do. The motor 14 and the linear motor are stopped when the light receiving section at the target paper position generates an output signal.

In one or more embodiments, an example is shown in which the chargers 41a to 41d are used, but a belt having a mesh may be used as the tU feeding member 42 to form an air suction type paper suction device.

Effects of the Invention) As explained above, according to the paper feeding device used in a copying machine or the like according to the present invention, a plurality of paper feeding power centers for different types of paper are arranged vertically, and one paper feeding cassette is Since the paper is selectively pushed forward and engaged with one paper feeding mechanism, the desired type of paper can be fed without having to change the paper, and the single paper feeding mechanism can be used. It can be shared to reduce the complexity of the configuration.

[Brief explanation of the drawing]

Fig. 1 is a sectional view showing an example of a conventional paper feeding device;
The figure is a configuration diagram showing one embodiment of the present invention, and FIG. 3 is a side view showing the peripheral configuration of the guide member 15. FIG. 4 is a perspective view showing details of the beam near motor section. Explanation of symbols 11: Screw member. 12a, 12b, 16 - bearings. 13...Bevel gear, 14.49...Motor. 15.32... Guide member. 17...Rack axis, 18...Gear. 19...Storage shelf. 20a to 20e...Supporting members. 22a to 22'e...Paper storage containers. 23a to 23e, 25a to 25e...light receiving sections. 24.38... Light emitting part. 30...Magnetic pole rail. 32...Linear motor head. 34...Guide plate, 35...Arm 936...Feed roll. 37... Conveyance roll. 418-41d... Charger. 42... Conveyance member. 438-4.38...Rotating roller. 45... Charge detector, 46... Static eliminator. 48... Paper peeling member, 50... Power supply section. 51... Control unit, 52... Console. Patent Applicant Fuji Xerox Co., Ltd. Agent Patent Attorney Nobuyuki Matsuhara Patent Attorney Seiji Muraki Agent Patent Attorney Taira 1) Tadao Agent Patent Attorney Atsushi Uejima − Agent Patent Attorney Hitoshi Suzuki Third Cause Fourth cause

Claims (1)

[Scope of Claims] A plurality of storage containers that store different types of paper and are arranged one above the other. Pushing means for pushing the back surface of one storage container selected from the plurality of storage containers to force this one storage container to a paper feeding position. A paper feeding device used in a copying machine or the like, comprising a paper feeding mechanism that feeds paper from the storage container located at a paper feeding position.