JPS6212535A - Double-side copying device - Google Patents

Abstract

PURPOSE:To enable each unit to be compactly simply mounted on the lower surface of the main body of a copying device and facilitate jam treatment by connecting a second unit for sending in and out of recording papers to a stacker for overturning, transferring and receiving the recording papers through a hinge to be opened and closed. CONSTITUTION:To the lower surface of the main body of a copying device 1 is attached fixedly a first unit 12a provided with a transfer path 13 for overturning and transferring recording papers 3. To the first unit 12a is con nected through a hinge section 14 a second unit 12b provided with a stacker 26 for receiving the recording papers, a friction ring for sending the recording paper 3 in and out of the stacker 26, a double feed preventing roller and an auxiliary roller. Jammed recording papers are disposed of by disengaging an engaging member 16 from a pin 162 with the operation of an operating lever 163 and opening the second unit 12b from the first unit 12a with a spring mem ber 15 holding the second unit 12b. Thus, the respective units can be mounted compactly simply on the lower surface of the main body of the copying device 1 to facilitate jam treatment.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention stores a recording paper with an original image copied on one side in a copying section in a stacker provided below the copying section, and then copies the recording paper from the stacker. The present invention relates to a double-sided copying device that is capable of copying both sides by refeeding paper to the copying section.

[Background of the invention]

Conventional double-sided copying devices have a primary paper feeding unit that feeds paper to the copying section, a fixing section that fixes the recorded paper after copying, and a paper ejecting section that discharges the recorded paper after it has been fixed. 1. A conveyance path that reverses and conveys the recording paper after single-sided copying, a stacker that stores the recording paper, and a secondary paper feeding means that feeds the recording paper from the stacker are either directly incorporated or attached to the stand of the copying machine main body. Ta. Therefore, in the former case, the main body of the copying apparatus becomes large and troublesome to deal with when a jam occurs, and in the latter case, it takes time and effort to position the copying apparatus.

[Purpose of the invention]

In view of the above-mentioned points, the present invention provides a double-sided copying device in which a full feeding path, a stacker, and a secondary paper feeding means are each made into a unit, so that it can be installed compactly and easily on the bottom surface of a copying device main body, and jam handling is facilitated. is intended to provide.

[Structure of the invention]

In order to achieve the above object, the present invention has a first unit fixed to the lower surface of the main body of a copying apparatus, which is provided with a conveying path for reversing and conveying recording paper after one-sided copying, and the recording paper is transferred to the first unit. A second unit including a friction member that can rotate in the direction of feeding the recording paper into the stacker and the direction of feeding the recording paper from the stacker is hinged, and the second unit is placed in the open position. The device is configured to include a spring member for holding it and a locking member for holding it in the closed position.

〔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 sheet feeding means 2 includes a first sheet picking section 2a that feeds recording sheets 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 a paper discharge path 9 connecting the fixing section 6 and the paper discharge section 7, and the guide roller 8 is configured to be able to actively rotate in the paper discharge direction. There is. Reference numeral 10 denotes a movable guide plate whose tip end is curved so as to cover the guide roller 8 from the paper discharge section 7 side, and the movable guide plate 1o
The base end is pivotally supported on the frame of the paper discharge section 7 via a shaft 11, and a position P that covers the guide roller 8 and a retracted position P' can be selected by the operation of a solenoid (not shown). (See Figure 2, 1.If).

Reference numeral 12 denotes a duplex unit attached to the lower surface of the copying apparatus main body 1, and the duplex unit 12 linearly conveys the recording paper 3 flowing down along the movable guide plate 10 toward the next paper feeding means 2 side. It consists of a first unit 12a equipped with a conveyance path 13 for storing recording sheets, and a second unit 12b equipped with a stacker 26 for storing recording sheets. The second unit 12b
is connected to the first unit 12a via a hinge portion 14, and can be opened as shown in the third figure.

A spring member 15 holds the second unit 12b in the open position, and the spring member 15 is stretched between the first unit 12a near the hinge portion 14 and the second unit 12b.

Reference numeral 16 denotes a locking member for holding the first unit 12a in the closed position, and the locking member 16 is fixed to a shaft 161 inserted between the side frames of the second unit 12b as shown in the fourth figure. The locking member 16 is urged to rotate in the direction of the arrow by the action of a spring (not shown), and can be locked to a pin 162 protruding from the inner surface of the side frame of the first unit 12a.

163 is an operating lever fixed to the outer end of the shaft 161;
64 is a handle provided near the operating lever 163.

The first plate 12a is fixed to the main body 1 of the copying apparatus by screwing an upper plate 131 constituting the upper surface of the conveyance path 13. Further, a lower plate 133 constituting the lower surface of the m feed path 13 is pivotally attached to the upper plate 131 at its base end 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 paper feeding means provided on the front side of the transporting direction of the transporting section 13, and the secondary paper feeding means 17 is connected to the
A friction ring 19 is fixed to the center of a shaft 18 inserted between the side frames attached to b.

A double-feed prevention roller 20 spring-biased so as to come into pressure contact with the outer surface of the friction ring 19, and a shaft 2 of the double-feed prevention roller 20.
An auxiliary roller 21 is pivotally supported by the tip of a lever 20b that is loosely fitted to 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 of the secondary sheet feeding means 17 has a gearing A provided at one end of its shaft 18.

It is possible to switch between forward and reverse directions by the action of gearing B provided at the other end. Gearation A is a friction wheel 1 whose drive source is a gear 22 that is connected to the drive shaft 2b' of the second paper feeding section 2b of the primary paper feeding means 2 and rotates in the direction of arrow a.
Rotate 9 in the direction of the arrow, and gear racing B is in the direction of arrow b.
’ direction, and these gear rations A
, B are switched by the action of solenoids A' and B'.

Reference numeral 30 denotes a push-up plate for the recording paper 3 housed in the stacker 26. - Now, when the recording paper 3 is being conveyed in the conveyance path 13 by the feed roller 134 and the roller 135 that is pressed against it, the friction ring 19 is rotated in the direction of arrow b' due to the action of the gearing B. There is. Therefore, the recording paper 3 is conveyed by the friction wheel 19 along a guide plate provided so as to cover it from the upper surface to the front surface, and is stored in the stacker 26. In this case, the double-feed prevention roller 20 that is in pressure contact with the friction ring 19 is free to rotate; in addition, since the auxiliary roller 21 is in pressure contact with the lower surface of the friction ring 19, the recording paper 3 is is reliably fed to a position where it abuts against an abutment member 32 provided deep within the stacker 26. Note that the position of the abutting member 32 can be automatically adjusted according to the size of the recording paper 3.

The record IE after one-sided copying of a predetermined sheet is placed in the stacker 26 mentioned above.
3 is stored, when the friction ring 19 starts rotating in the direction indicated by the arrow, the push-up plate 49 moves upward and presses the uppermost layer of the recording paper 3 on the upper surface of the push-up plate 49 to the lower surface of the friction ring 19.

Therefore, the friction wheel 19 separates the recording sheets 3 in the stacker 26 one by one using the double-feed prevention roller 20, passes through the opening 33, joins the recording paper path of the primary sheet feeding means 2, and feeds the sheets to the copying section 4 again. let

For example, if the recording paper jams in the 1wi feed path 13 during the above operation, hold the handle 164 provided on the second unit 12b and turn the operating lever 163 counterclockwise to close the second unit 12b. The locking member 16 that was held in position comes off the pin 162 protruding from the inner surface of the side frame of the first unit 12a, and the second unit 12b disengages from the hinge portion 14.
Open around the center. This opening is opened by the spring member 15 to a size that facilitates jam clearance. When closing the second unit 12b after a certain work, it is sufficient to push it up using the handle 164, and the first unit 12a is connected to the first unit 12a by the locking member 16 and held in the closed position. In this case, the second unit can be pushed up by a light touch due to the restoring force of the spring member 15.

In the above embodiment, a friction ring is shown as a friction member that can rotate in the direction of storing the recording paper into the stacker and the direction of refeeding the recording paper from the stacker, but it goes without saying that a friction belt may also be used. It is.

〔Effect of the invention〕

As explained above, the double-sided copying apparatus according to the present invention has a first unit fixed to the lower surface of the main body of the copying apparatus, which is provided with a conveying path for reversing and conveying a recording sheet after one-sided copying, and the first unit is attached to the first unit. A stacker for storing recording paper and a second unit including a friction member that can rotate in the direction of feeding the recording paper into the stacker and the direction of feeding the recording paper from the stacker are hinged, and the second unit is placed in the open position. Since the apparatus is characterized by having a spring member for holding the apparatus and a locking member for holding the apparatus in the closed position, each unit can be compactly and easily mounted on the lower surface of the main body of the copying apparatus. Therefore, the entire apparatus can be made more compact than conventional apparatuses in which the conveying path, stacker, and secondary paper feeding means are either directly built into the copying apparatus main body or are attached to a stand of the copying apparatus main body.

Further, when performing certain work on the jam removal ring, the second unit can be opened centering on the hinge portion, which has the excellent effect of making the work easier to perform.

[Brief explanation of drawings]

The figures show an embodiment of the invention, and FIG. 1 is an overall sectional view;
Figure 2 1. II is a sectional view showing the action of the movable guide plate, FIG. 3 is a sectional view of the second unit in an open state, and FIG. 4 is a perspective view of the locking member. FIG. 5 is a perspective view showing the forward and reverse rotation mechanism of the friction member of the secondary paper feeding means. 1-・Copying device body 3-・-Recording paper 4-Copying section
12-・Double-sided unit 12a-・First unit 12b-・Second unit 13・-Transport path
14-Seven hinge member 15...Spring member
16...Locking member 19...Friction shaft (friction member) 2
6.-Stacker Patent Applicant Roku Konishi Photo Industry Co., Ltd.l! 1 Figure 2 Figure 3 Figure 551

Claims (1)

[Claims] A first unit having a conveyance path for inverting and conveying the recording paper after one-sided copying is fixed to the lower surface of the copying apparatus main body, a stacker for storing the recording paper in the first unit, and a stacker for transporting the recording paper to the stacker. A second unit including a friction member rotatable in a feeding direction and a recording paper feeding direction from a stacker is hinged, and a spring member holds the second unit in an open position and a locking member holds the second unit in a closed position. A double-sided copying device characterized by comprising: