JPS6212573A - Both side copying device - Google Patents

Abstract

PURPOSE:To miniaturize and simplify a device by connecting both moving and energizing means for an end striking member and for a width restraining board which are provided on the floor board of a one-side copied record paper housing stacker, to a common driving source via a switchover means. CONSTITUTION:When the size of a sheet of record paper is specified at the time of carrying out copying, the rotation of a driving source 42 is transmitted to a driving pulley 41 via gears 44, 45, 47, 56, 55, a pinion 35 is rotated by means by the rope 38 of a moving and energizing means 36, and width restraining boards 27, 27' on the floor board of a stacker are moved to expand or reduce a space to size, via racks 27c, 27c'. After that, the solenoid 49 of a switchover means 43 is turned on to mesh switchover gears 47, 53 with each other, the rotation of the driving source 42 is transmitted to a driving pulley 31 via gears 44, 45, 47, 54, 53, and an end striking member 25 is moved to size by means of the rope 32 of a moving and energizing means 29. Thereby, the device can be miniaturized and simplified.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a double-sided copying apparatus, and more particularly to a double-sided copying apparatus in which recording paper after one-sided copying can be correctly stored in a stacker.

[Background of the invention]

Generally, in a duplex copying machine, the recording paper that has been copied on one side in the copying section is stored in a stacker installed below the copying section, and then the recording paper is re-fed from the stacker to the copying section to make a double-sided copy. However, this stacker needs to stack the recording sheets sent through the feeding means in a state that makes it easy to refeed the sheets. For this reason, conventionally, a recording paper leading edge abutting member and a width regulating plate are provided on the floor surface of the stacker, and a means for automatically adjusting the movement of the leading edge abutting member and the width regulating plate according to the size of the recording paper has been provided. However, each of these moving means had its own independent drive source, which increased the size and cost of the device.

[Purpose of the invention]

In view of the above, an object of the present invention is to provide a double-sided copying device that can downsize and simplify the means for moving the recording paper end abutment member and the width regulating plate provided on the floor of the stacker. There is.

[Structure of the invention]

In order to achieve the above object, the present invention provides a recording paper leading end abutting member and a width regulating plate on the floor plate of a stacker that accommodates recording paper after single-sided copying, and a means for urging the leading end abutting member to move. The movement biasing means for the width regulating plate is connected to a common drive source via a switching means.

〔Example〕

Next, the present invention will be described based on embodiments shown in the accompanying drawings.

In the figure, 1 is the main body of the copying machine, 2 is the primary paper feeding means,
The next paper feeding means 2 includes a first paper picking section 2a that feeds recording papers 3 stored in a cassette (not shown) one by one, and a copying section 4.
It consists of a second sheet feeding section 2b provided in the middle of the path leading to.

5 is a conveyor belt for the recording paper 3 copied by the copying section 4; 6 is a fixing section for the recording paper 3 sent by the conveyor belt 5; 7
2 is a paper ejecting section that ejects the recording paper 3 after fixing.

A guide roller 8 is provided so as to be partially exposed on the paper discharge path 9 connecting the fixing section 6 and the paper discharge section 7, and the guide roller 8 is configured to actively rotate in the paper discharge direction. .

10 is a movable guide plate whose tip is curved so as to cover the guide roller 8 from the paper discharge section 7 side;
0 The base end portion is pivotally supported on the frame of the paper discharge section 7 via a shaft 11, and is operated by a solenoid (not shown). , ■, a position P that covers the guide roller 8 and a retracted position P' can be selected.

Reference numeral 12 denotes a duplex unit attached to the lower surface of the copying apparatus main body 1, and the duplex unit 12 directs the recording paper 3 flowing down along the movable guide plate 10 in a straight line toward the primary paper feeding means 2 side of the copying apparatus main body 1. It consists of a first unit 12a equipped with a conveyance path 13 for conveying objects and a second unit 12b equipped with a stacker 26. This second unit 12b is coupled to the first unit 12a via a hinge portion 14,
It can be opened as shown in the third figure. 15 is a spring member that supports the opened second unit 12b, and 16 is a locking member that locks the lower half 12b to the pin 16' of the first unit 12a.

The transport path 13 includes an upper plate 131 constituting the upper surface of the double-sided unit 12, and a lower plate 133 whose base end is rotatably attached to the upper nucleus plate 131 via a shaft 132. Reference numeral 134 denotes a feed roller that is pivotally supported on the upper plate 131 so that a portion thereof is exposed in the conveyance path 13. The feed roller 134 is pivotally supported on the tip of a spring member 136 fixed to the lower plate 133. The pressure contact roller 135 is in pressure contact with the contact roller 135.

Reference numeral 17 denotes a secondary sheet feeding means provided on the front side in the conveying direction of the conveying section 13, and the secondary sheet feeding means 17 is connected to the duplex unit 12.
a friction ring 19 fixed to the center of a shaft 18 inserted between the side frames of the second unit 12b; and a double-feed prevention roller 20 biased by a spring so as to come into pressure contact with the outer surface of the friction ring 19.

A lever 20 loosely fitted onto the shaft 20a of the double feed prevention roller 20.
An auxiliary roller 21 is pivotally supported at the tip of the friction ring 19 and is biased by a spring so as to come into pressure contact with the lower surface of the friction ring 19.

The friction ring 19 constituting the secondary paper feeding means 17 is driven by a gear 22 which rotates in the direction of arrow a in conjunction with the drive shaft 2b' of the second paper feeding section 2b of the secondary paper feeding means 2. axis 18
Gear ration A provided on one end side.

It is configured so that it can rotate in the forward and reverse directions (directions of arrows A and b') by connecting both gears A and B through the gear ration B provided on the other end side and switching them by the action of solenoids 23 and 24. has been done.

25 is a member for abutting the leading end of the recording paper 3 provided on the floor plate of the stanker 26, and 27 and 27' are width regulating plates. The tip abutment member 25 is shown in FIG.

As shown in FIG. 6, it has a side-curved shape, and the end of the bottom surface portion 25a becomes an inclined surface 25b, and the bottom surface of the bottom surface portion 25a has a vertical groove 28 provided at the widthwise center of the floor plate of the stacker 26. It is provided with a protrusion 25c fitted so as to be movable.

Reference numeral 29 denotes a movable biasing means for moving the tip abutting member 25 in the front-rear direction along the longitudinal groove 28;
Pulleys 30 and 30' are provided with ropes 32 tied to the projections 25c in the underfloor space corresponding to the front and rear ends of the longitudinal grooves 28.
Along with installing it in between.

One end of the rope 32 is wound around the driving pulley 31.

Turn the other end of the tension adjustment pulley 33 to the driving pulley 31.
The rope is wound in a direction opposite to one end thereof, and is configured to be able to be moved in the front-back direction by rotating the drive pulley 31 forward and backward, winding the end of the rope and unwinding it two times.

Further, the width regulating plates 27 and 27' are formed by bending a plate material into an L shape as shown in FIG. 5, and have a horizontal portion 27a.

Protrusions 27b, 27b' fitted so as to be able to slide along horizontal grooves 34 and 34' formed in the floor plate of the stacker 26 in a stepped manner in the width direction are provided on the lower surface of the stacker 27a'.
Rack 27 with teeth arranged on the inner edge side on the lower surface of b, 27b'
A pinion 35 to which the racks 27c and 27c' are fixedly supported and the racks 27c and 27c' are pivotally supported in the underfloor space of the stuff car 26.
It is made by sandwiching them and interlocking them. 36 is the width regulating plate 27.
27' in the width direction, and the movable urging means 36 connects both ends of the row 138 wound around a pulley 37 coaxially fixed to the pinion 35 with tension adjustment pulleys 39 and 40. By rotating the drive pulley 41 and winding it in opposite directions, the drive pulley 41 is rotated in the forward and reverse directions to rotate the pinion 35.

It is configured so that it can be moved in the width direction via racks 27c and 27c'.

42 is a movement biasing means 29 for the tip abutting member 25;
The driving source 42 is a common driving source for the movement urging means 36 of the width regulating plates 27 and 27', and the driving source 42 can be rotated in forward and reverse directions.

43 is a switching means, and the switching means 43 is shown in FIG. n
A gear 44 fixed to the output shaft of the drive source 42 as shown in FIG.
The shaft 47' of the gear 47 is fitted into a first lever 46 which can swing around a shaft 45' of a gear 45 which is meshed with the gear 45, and which has a swinging end that pivotally supports a gear 47 which meshes with the gear 45. The second lever 52 has a cam groove 48 and a second lever 52 that swings about a support shaft 51 under the action of a solenoid 49 and a spring member 50. That is, when the solenoid 49 is in the OFF state and the plunger 49' protrudes as shown in FIG. 7I, the second lever 52 swings counterclockwise due to the action of the spring member 50, Shaft 4 in cam groove 48
7', the gear 47 is separated from the gear 54 that meshes with the gear 53 fixed coaxially with the drive pulley 31, and the gear 55 is fixed coaxially with the drive pulley 41, as shown in FIG. When the solenoid 49 is turned ON and the plunger 49' is pulled as shown in FIG. 7, the second lever 52 swings clockwise against the spring member 50. , a shaft 47' is inserted into the cam groove 48.
The gear 47 that is fitted through the first lever 46 swings as shown by the arrow, and meshes with the gear 54 that meshes with the gear 53 that is fixed coaxially with the driving pulley 31. This results in separation from the gear 56 that meshes with the gear 55 fixed to the .

Reference numeral 57 denotes a lever provided with a stopper 58 that engages with a gear 54 that meshes with a gear 53 fixed coaxially with the drive pulley 31, and the lever 57 is biased by a spring member 59 in a direction in which the stopper 57 engages. ing. This stopper 58 prevents the leading end abutting member 25 from moving due to the impact caused by the abutment of the recording paper 3 when the switching gear 47 is not engaged with the gear 54 as shown in FIG. 7I. Reference numeral 59 denotes a microswitch that detects when the tip abutting member 25 has reached the most retracted position and turns off the power to the drive source 42, and is a bulge on the side surface of the protrusion provided on the lower surface of the tip abutting member 25. It is provided with an actuator 61' that comes into contact with 250'.

60 is a push-up plate that pushes up the recording paper 3 after a predetermined number of single-sided copies of the recording paper 3 are stored in the stacker 26 and before the friction shaft 19 rotates in the direction indicated by the arrow; 61 is a friction shaft; This is a re-feeding path for the recording paper 3 sent out by the friction of 19.

In the above embodiment, in the switching means 43, the solenoid 49 is in the OFF state as shown in FIG. are doing. Therefore, when copying, press the designation button to specify the recording paper size.

The drive source 42 rotates in a predetermined direction, and the rotation is controlled by the gear 44.
．． 45, 47, 56 and 55 to the driving pulley 41 to wind up or unwind one end or the other end of the lobe 38,
As a result, the pinion 35 rotates to the right or left, and the rack 2
The width regulating plates 27 and 27' are enlarged or reduced in accordance with the size of the recording paper via the width regulating plates 7c and 27c'. In this case, it is preferable to set a reference position for the width regulating plate 27, 27' and to control from this reference position to the position of each size using pulse signals. When the movement is completed, the solenoid 49 is turned ON, and the gear 5 which fixed the switching gear 47 coaxially with the driving pulley 31 is turned on.
The rotation of the drive source 42 is transmitted to the drive pulley 31 via the gears 44, 45, 47, 54 and 53, and one end or the other end of the row 132 is wound or unwinded. As a result, the leading end abutting member 25 moves forward or backward according to the size of the recording paper.

When the copy button is pressed after the above operation is completed.

The image is copied onto recording paper fed from the primary paper feeding means 2 in the copying section 4 in synchronization with the scanning of the original. Then, the recording paper 3 on which the one-sided copy has been made is fixed, and is conveyed to the secondary paper feeding means 17 through the movable guide plate 10 and through the conveyance path 13 . Therefore, the recording paper has a friction ring 19, and the friction ring 19 is indicated by the arrow b.
When rotating in the ' direction, it is sandwiched between the double-feed prevention roller 20, which can freely rotate, and is housed in the stacker 26. The stored recording paper is correctly aligned by the width regulating plate and the tip abutting member, which are moved to a position that matches the size of the recording paper, as described above. Therefore, after a predetermined number of sheets of recording paper 3 after single-sided copying are stored in the stacker 26, the push-up plate 62 moves upward to press the top layer of the recording paper 3 against the friction ring 19.
rotates in the direction of the arrow, making it easier to operate when feeding.

〔Effect of the invention〕

As described above, the double-sided copying apparatus according to the present invention includes a recording paper leading end abutting member and a width regulating plate on the floor plate of the stacker that accommodates the recording paper after single-sided copying, and the leading end abutting member is movable. Since the biasing means and the movement biasing means for the width regulating plate are connected to a common drive source through the switching means, unlike the conventional device, the movement of the recording paper leading end abutment member and the width regulating plate can be controlled respectively. Unlike the method using an independent drive source, this method has an excellent effect in that the device can be made smaller and simpler.

[Brief explanation of the drawing]

The figures show an embodiment of the invention, and FIG. 1 is an overall sectional view;
Figure 2 1. If is a sectional view showing the action of the movable guide plate, FIG. 3 is a sectional view with the second unit of the duplex unit opened, and FIG. 4 is a perspective view showing the forward and reverse rotation mechanism of the friction ring of the secondary paper feeding means. figure. FIG. 5 is a plan view showing the recording paper leading end abutting member, width regulating plate, and means for urging movement thereof; FIG. 6 is a perspective view showing the means for urging movement of the leading end abutting member; FIG. 7; ．． II is a diagram showing the action of the switching means, and FIG. 8 is a sectional view of the driving pulley. 1.--Copying device body 3.--Recording paper 25--
Tip abutting member 2q - Stacker 27.27'
・-Width regulating plate 29.36-Movement biasing means

Claims (1)

[Claims] A recording paper leading edge abutting member and a width regulating plate are provided on a floor plate of a stacker that accommodates recording paper after single-sided copying, and means is provided for switching between a movement biasing means for the leading edge abutting member and a movement biasing means for the width regulating plate. A double-sided copying device characterized in that it is connected to a common drive source through a common driving source.