JP2537365B2 - Electrostatic copier - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an electrostatic copying machine, and more particularly to an electrostatic copying machine capable of forming an image on both sides of a copy sheet as needed.

<Prior art> From the standpoint of saving copy paper and reducing the number of stored documents,
It is often desired to form an image on both sides of a copy sheet, and therefore, in recent years, an electrostatic copying machine that can form an image on both sides of a copy sheet has been proposed and put into practical use. Has come to be offered to.

A typical example of such an electrostatic copying machine is a copy paper conveyance path,
A copy paper supply unit for supplying sheet copy paper to the copy paper transport path, a copy paper return path, a copy paper returned through the copy paper return path, and a copy paper receiving path for the copy paper received path. It is provided with a copy paper retransmitting means for re-feeding. In such an electrostatic copying machine, the copy paper supplied from the copy paper supply means to the copy paper transport path is
An image is formed on one side of the copy paper while being conveyed through the copy paper conveyance path. When it is desired to form an image on only one side of the copy paper, the copy paper having the image formed on one side is discharged as it is from the copying machine.
On the other hand, when it is desired to form an image on both sides of the copy paper, the copy paper having the image formed on one side is introduced into the copy paper return path, and is passed through the copy paper return path to the copy paper retransmitting means. Accepted. After that, the copy paper is retransmitted from the copy paper retransmitting means to the copy paper conveyance path, and an image is formed on the other surface of the copy paper while being re-conveyed through the copy paper conveyance path. The copy paper is discharged outside the copying machine.

However, the conventional electrostatic copying machine described above has the following problems to be solved. That is, when a paper jam occurs in the copy paper resending means, it is difficult to remove the jammed paper relatively easily. Further, when a paper jam occurs in the copy paper return path, it is difficult to easily remove the jammed paper without damaging the copy paper received by the copy paper resending means.

<Objects of the Invention> The present invention has been made in view of the above facts, and the first object thereof is to easily remove the jammed paper when a paper jam occurs in the copy paper resending means. ,
It is to provide an excellent electrostatic copying machine.

A second object of the present invention is that when a paper jam occurs in the copy paper return path, the jammed paper can be easily removed without damaging the copy paper received by the copy paper resending means. It is to provide an electrostatic copier.

<Summary of the Invention> According to the present invention, in order to achieve the first object,
Copy paper conveyance path, copy paper supply means for supplying sheet copy paper to the copy paper conveyance path, copy paper return path, copy paper that has received and received copy paper returned through the copy paper return path And a copy paper re-sending means for re-supplying the copy paper to the copy paper transport path, while the copy paper supplied from the copy paper supply means to the copy paper transport path is transported through the copy paper transport path. ,
An image is formed on one side of the copy paper, and the copy paper on which the image is formed on one side is selectively introduced into the copy paper return path and returned to the copy paper retransmitting means through the copy paper return path, Then, in an electrostatic copying machine of the type in which an image is formed on the other surface of the copy paper while being re-supplied from the copy paper retransmitting means to the copy paper conveyance path and being re-conveyed through the copy paper conveyance path; The copy paper retransmitting means includes a copy paper receiving portion that receives the copy papers returned through the copy paper returning path in a stacked state, and the copy paper receiving portion extends substantially flat in the copy paper feeding direction. The copying paper guide member includes a plate and a plurality of receiving projections arranged at intervals in the width direction of the receiving plate, wherein the copying paper guiding member includes the plurality of receiving projections. Through the openings formed in the receiving plate and above it Provided is an electrostatic copying machine, which is movable between a projecting working position and a non-working position located substantially below the receiving plate.

Further, according to the present invention, in order to achieve the second object, a copy paper transport path, a copy paper supply means for supplying a sheet copy paper to the copy paper transport path, and a copy paper return path. And copy paper retransmitting means for receiving the copy paper returned through the copy paper returning path and re-supplying the received copy paper to the copy paper conveying path. While the copy paper supplied to the paper is conveyed through the copy paper conveyance path,
An image is formed on one side of the copy paper, and the copy paper on which the image is formed on one side is selectively introduced into the copy paper return path and returned to the copy paper retransmitting means through the copy paper return path, Then, in an electrostatic copying machine of the type in which an image is formed on the other surface of the copy paper while being re-supplied from the copy paper retransmitting means to the copy paper conveyance path and being re-conveyed through the copy paper conveyance path; The copy paper retransmitting means includes a copy paper receiving portion that receives the copy papers returned through the copy paper return path in a stacked state.
The copy paper receiving portion includes a receiving plate and a copy paper guide member that extend substantially flat in the direction of feeding the copy paper, and the copy paper guiding member protrudes upward through an opening formed in the receiving plate. And a non-acting position located substantially below the receiving plate, and the downstream side of the copy sheet return path is provided with a plurality of one-side elements and a plurality of other sides of the return control mechanism. Defined between elements,
The plurality of one-sided elements are mounted on a movable frame body that is movably mounted between a closed position and an open position retracted from the closed position. Further, when the movable frame body is set to the open position. There is provided an electrostatic copying machine characterized in that the copy paper guide member is configured to be biased to the non-acting position.

<Preferred Specific Examples of the Invention> Specific examples of an electrostatic copying machine configured according to the present invention will be described below with reference to the accompanying drawings.

Overview of Electrostatic Copying Machine FIG. 1 schematically shows main components in one specific example of an electrostatic copying machine constructed according to the present invention. In FIG. 1, the illustrated electrostatic copying machine includes a housing 2 having a substantially rectangular parallelepiped shape. On the upper surface of the housing 2, a stationary transparent plate 4 on which a document (not shown) to be copied is placed, and an openable and closable document for covering the transparent plate 4 and the document placed on the transparent plate 4. A pressing member 6 is provided.

A rotary drum 8 having an electrostatic photosensitive member on its peripheral surface is rotatably mounted in a substantially central portion of the housing 2. Around the rotary drum 8 which is rotationally driven in the direction shown by the arrow 10, when viewed in the direction shown by the arrow 10, the charging area 12 and the exposure area
14, a developing area 16, a transfer area 18 and a cleaning area 20 are provided. The charging area 12 is provided with a charging corona discharger 22, the developing area 16 is provided with a developing device 24, and the transfer area 18 is provided with a transfer corona discharger 26 and a peeling corona discharger 28. The cleaning area 20 is provided with a residual toner removing blade 32.

Above the rotary drum 8, an optical system generally designated by the numeral 34 is arranged. The optical system 34 includes a movable original illumination lamp 36, a first movable reflecting mirror 38, a second movable reflecting mirror 40, and a third movable reflecting mirror 40.
Movable reflector 42, stationary lens assembly 44 and stationary reflector 46 of
Is included. Movable original illumination lamp for scanning exposure
36 and the first movable reflecting mirror 38 are moved substantially horizontally to the right from the scanning exposure starting position shown in FIG. 1 to the maximum scanning exposure ending position, for example, at the required speed V, and the second movable reflecting mirror 40 is moved. The third movable reflecting mirror 42 is moved substantially horizontally to the right from the scanning exposure start position shown in FIG. 1 to the maximum scanning exposure end position at a speed V / 2 which is half the required speed. At this time, the manuscript placed on the transparent plate 4 is illuminated by the movable manuscript illumination lamp 36, and the reflected light from the manuscript is divided into the first, second and third parts as shown by the one-dot chain line in FIG. Are sequentially reflected by the movable reflecting mirrors 38, 40 and 42 to reach the lens assembly 44, and then are reflected by the stationary reflecting mirror 46 and projected onto the photoconductor in the exposure area 14. When the scanning exposure is completed, the movable original illumination lamp 36 and the first, second and third reflecting mirrors 38, 40 and 42 are returned to the scanning exposure starting position.

At one end of the housing 2, that is, at the right end in FIG. 1, there is provided copy paper feeding means generally designated by numeral 48. The illustrated copy paper feeding means 48 includes a lower cassette receiving portion 50.
a, an intermediate cassette receiving portion 50b and an upper cassette receiving portion 50c are included. The lower cassette receiving portion 50a, the intermediate cassette receiving portion 50b, and the upper cassette receiving portion 50c each have several types of copy paper cassettes that store sheet copy papers of different sizes.
Any one of 52 is selectively and detachably mounted.
Each of the lower cassette receiving portion 50a, the intermediate cassette receiving portion 50b, and the upper cassette receiving portion 50c has delivery rollers 54a, 54b, and 54c for delivering one copy sheet from the copy sheet cassette 52 mounted therein. Is provided. Lower cassette receiver
The copy paper delivered from the copy paper cassette 52 mounted in 50a is introduced into the copy paper transport path indicated by numeral 58 through the copy paper feed path 56a. Intermediate cassette receiver 50b
The copy paper sent from the copy paper cassette 52 mounted on the paper is fed through the copy paper feed paths 56b and 56a to the copy paper transport path.
Introduced in 58. The copy paper delivered from the copy paper cassette 52 mounted on the upper cassette receiving portion 50c is introduced into the copy paper transport path 58 through the copy paper feed paths 56c, 56b and 56a. The copy paper feed path 56a is defined by the guide plates 62 and 64, the copy paper feed path 56b is defined by the guide plates 66, 68 and 70 and the feed roller pair 72, and the copy paper feed path 56 is also provided.
c is defined by the guide plates 68, 70, 74 and 76 and the feed roller pair 78. The illustrated copy paper supply means 48 further includes
It includes a paper feed table mechanism 80. Paper feed table mechanism 80
Includes a vertically movable table (not shown), and the delivery roller 82 is arranged above the table. The copy paper sent from the table mechanism 80 is transferred to the copy paper feeding path 56d.
And a copy paper re-supply path (described later) to the copy paper transport path 58. The copy paper feeding path 56d is provided with a guide plate 84.
And 86 and the feed roller pair 88.

The copy paper transport path 58 extends from the upstream end 90 to the downstream end 92 substantially horizontally from right to left in FIG. The copy paper transport path 58 is provided at the downstream portion of the guide plate 64 and the guide plate.
Downstream of 94, a pair of transport rollers 96, a pair of guide plates 98, a pair of transport rollers 100, a guide plate 102, the transfer area 18 (that is, between the rotary drum 8 and the corona discharger 26 for transfer and the corona discharger 28 for peeling). ), The transport belt mechanism 104, the guide plate 106, the heat fixing roller pair 108, the guide plate pair 110, and the transport roller pair 112.

A transport control unit 114 is disposed adjacent to the downstream end 92 of the copy paper transport path 58. This transport control means 114,
It includes a lower movable guide member 118 and an upper movable guide member 120 that define a copy paper moving path 116 between them. The lower movable guide member 118 and the upper movable guide member 120 are selectively positioned at the lowered position shown by the solid line and the raised position shown by the chain double-dashed line. A copy paper discharge path 124 having a discharge roller pair 122 is provided on the downstream side of the conveyance control means 114. And
A receiving tray 126 is detachably attached to the other end of the housing 2, that is, the left end in FIG.

Further, in association with the transport control means 114, a copy paper reverse path indicated by the numeral 128 and a copy paper return path indicated by the numeral 130 are provided. The copy paper reversing path 128 defined by the guide plate pair 132 extends in an appropriate curved shape from the upstream end adjacent to the downstream end of the transport control means 114. At the upstream end of the copy paper reversing path 128, a reversing roller 134 that is selectively positioned between a non-acting position shown by a solid line and a working position shown by a chain double-dashed line is arranged.
The copy sheet return path 130 extends from the upstream end adjacent to the upstream end of the conveyance control means 114 to the left to the right in FIG. The copy paper returning path 130 is defined by the copy paper returning means 136, that is, the returning mechanism 138 arranged on the upstream side and the returning control mechanism 140 arranged on the downstream side. The copy paper returning means 136 will be described later. As can be easily understood by referring to FIG. 1, the lower movable guide member 1 of the transfer control means 114 is shown.
When the 18 and the upper movable guide member 120 are positioned at the lower position shown by the solid line, the copy paper conveyance path 58 and the copy paper discharge path 124 communicate with each other via the copy paper movement path 116 in the conveyance control means 114. To be done. On the other hand, when the lower movable guide member 118 and the upper movable guide member 120 are positioned at the ascending position shown by the chain double-dashed line, the copy paper conveyance path 58 and the copy paper reverse rotation path 128 become the copy paper movement path in the conveyance control means 114. The copy paper reversing path 128 and the copy paper returning path 130 are made to communicate with each other via 116, and the conveyance control means 11 is provided.
They are made to communicate with each other via the copy paper moving path 116 at 4.

In the electrostatic copying machine shown in the figure, a copy paper retransmitting unit indicated by reference numeral 141 is provided below the copy paper returning path 130. The copy sheet retransmitting means 141 includes a copy sheet receiving section 142.
The copy paper receiving portion 142 is composed of a receiving plate 144 defining a front portion thereof and a plurality of receiving projections 146 defining a rear portion thereof. The copy sheet receiving unit 142 will also be described later.
Stop means 148 is provided at the front end of the copy paper receiving portion 142, that is, at the right end of the receiving plate 144 in FIG. The stopping means 148 is selectively positioned at either the operating position shown by the solid line or the non-operating position shown by the chain double-dashed line. A feeding roller 150 is provided above the front end of the receiving portion 142. The feeding roller 150 can freely move upward from a position in contact with the upper surface of the pedestal 142 (a position indicated by a chain double-dashed line in FIG. 1) to a predetermined position (a position indicated by a solid line in FIG. 1). And is forced downward by the biasing action of its own weight (optional spring means if necessary).

Further, there is provided a copy paper re-feeding path indicated by reference numeral 152, which extends from the front end of the copy paper retransmitting means 141 to the upstream end 90 of the copy paper transport path 58. This copy paper re-supply path 152 includes a separation roller pair 154, a guide plate pair 156, a re-supply roller pair 158, a guide plate pair 160, a re-supply roller pair 162, guide plates 84, 86, 164, a re-supply roller pair 168 and a guide plate. 94,170.

The operation of the illustrated electrostatic copying machine as described above will be outlined below.

The rotating drum 8 is rotated in the direction indicated by the arrow 10,
In the charging area 12, the surface of the photoconductor on the rotary drum 8 is charged to a specific polarity by the charging corona discharger 26, and in the exposure area 14, the image of the original placed on the transparent plate 4 is converted into the optical system. Scanning exposure is performed on the photoconductor by 34, thus forming an electrostatic latent image on the photoconductor. In development area 16,
The developing device 24 applies toner to the electrostatic latent image on the photoconductor to develop the electrostatic latent image into a toner image. In the transfer area 18, copy paper conveyed through the copy area 18 (conveyance of copy paper will be further referred to later) is brought into contact with the surface of the photoconductor, and the transfer corona discharger 26 acts on the photoconductor. The toner image is transferred onto the copy paper. Then, the copy paper is peeled from the photoconductor by the action of the peeling corona discharger 28. The peeled copy paper is heated by a fixing roller pair 108.
The toner image is fixed on the copy sheet as it is conveyed to the roller pair 108. On the other hand, in the cleaning area 20,
The action of the residual toner blade 32 removes the residual toner from the surface of the photoconductor.

The conveyance of copy paper will be described below.
First, a case of forming an image on only one side of copy paper will be described. In this case, the lower movable guide member 118 and the upper movable guide member 120 of the conveyance control unit 114 are positioned at the lowered position shown by the solid line. . Lower cassette receiver 50a,
The copy paper introduced to the copy paper transport path 58 from the copy paper cassette 52 mounted on the intermediate cassette receiving portion 50b or the upper cassette receiving portion 50c or the table (not shown) of the paper feeding table mechanism 80 is the copy paper. It is transported through the transport path 58. During this time, one side (that is, the upper surface) of the copy paper in the transfer area 18
The toner image is transferred onto the copy sheet, and the toner image is fixed on one side of the copy sheet by the action of the heating and fixing roller pair 108, thus forming an image on one side of the copy sheet. Then, the copy paper is transferred from the copy paper transfer path 58 to the transfer control means 114.
Through the copy paper moving path 116 in
And is discharged to the tray 126 through the copy paper discharge path 124. Thus, a copy having an image formed on one side thereof is obtained.

When images are formed on both sides of the copy paper, first, the lower movable guide member 118 and the upper movable guide member 120 of the conveyance control unit 114 are positioned at the raised position indicated by the chain double-dashed line.
Next, when the copying process is started, the lower cassette receiving portion 50
a, a copy paper cassette 52 mounted on the intermediate cassette receiving portion 50b or the upper cassette receiving portion 50c, or a paper feeding table mechanism
The copy paper introduced from the table 80 (not shown) into the copy paper transport path 58 is transported through the copy paper transport path 58. During this time, the toner image is transferred to one surface (that is, the upper surface) of the copy paper in the transfer area 18, and the toner image is fixed on the one surface of the copy paper by the action of the heat fixing roller pair 108, and thus the one surface of the copy paper. An image is formed on.
The copy paper from the copy paper conveyance path 58 is introduced into the copy paper reverse rotation path 128 through the copy paper movement path 116 in the conveyance control means 114, and proceeds through the copy paper reverse rotation path 128. At this time, the lower surface of the copy paper comes into contact with one located above the discharge roller pair 122, which is being driven to rotate in a predetermined direction,
A slippage is created between this one discharge roller and the copy sheet, so that the copy sheet can advance in a given direction, even though such roller is rotationally driven. When the trailing edge of the copy paper passes through the downstream end of the copy paper transport path 58, that is, the nip portion of the transport roller pair 112, the reversing roller 134 provided at the upstream end of the copy paper reversing path 128 operates as indicated by a chain double-dashed line. The copy paper is pressed against the one roller of the discharge roller pair 122. In this case, the copy sheet is made to move forward and backward by the action of the one discharge roller that is being driven to rotate in the predetermined direction. Then, it is introduced into the copy paper returning path 130 through one of the rollers located below the conveying roller pair 92 and one of the guide plate pair 172, and advances through the copy paper returning path 130. The reverse rotation roller 134 in the copy paper reverse path 128 is returned to the non-acting position shown by the solid line at an appropriate time after the copy paper is introduced into the copy paper return path 130.

The copy sheet advanced through the copy sheet return path 130 is guided to the copy sheet receiving section 142 of the copy sheet retransmitting means 141, and advances on the receiving section 142 to the right in FIG. Then, the feeding roller 150 acts on the copy sheet to further feed the copy sheet to the right, and thus the leading edge of the copy sheet is brought into contact with the stop means 148 positioned at the operating position shown by the solid line. As a result, the copying paper is prevented from advancing, and the copying paper is stopped at the required position on the copying paper resending means 141. Even if the feeding roller 150 is rotated at this point, a slip is generated between the feeding roller 150 and the copy sheet, and the copy sheet is not further advanced.

When the required number of copy sheets are returned to the copy sheet retransmitting means 141 as described above, the lower movable guide member 118 and the upper movable guide member 120 of the transport control means 114 are returned to the lowered position shown by the solid line. Then, the stop means 148 in the copy paper retransmitting means 141 is positioned at the non-acting position shown by the chain double-dashed line,
By the action of the feeding roller 150 which is rotationally driven in a predetermined direction, the copy paper is re-supplied from the copy paper retransmitting means 141 to the copy paper resupply path 1
Sent to 52. The copy papers sent to the copy paper re-supply path 152 are advanced one by one through the copy paper re-supply path 152 and are supplied again to the copy paper transport path 58. As easily understood by referring to FIG. 1, such a copy sheet is turned upside down by passing through a substantially semicircular copy sheet resupply path 152, and one side on which an image has already been formed is made a bottom side. In this state, it is supplied to the copy paper conveyance path 58. Next, the copy paper is conveyed through the copy paper conveyance path 58.
At this time, the toner image is transferred to the other surface of the copy paper, that is, the upper surface in the transfer area 18, and the toner image is fixed on the copy paper by the action of the heating and fixing roller pair 108, and thus the image is formed on the other surface of the copy paper. It is formed. Next, the copy paper is introduced from the copy paper transfer path 58 to the copy paper discharge path 124 through the copy paper moving path 116 in the transfer control means 114, and is discharged to the tray 126 through the copy paper discharge path 124. Thus, a copy having an image formed on both sides is obtained.

Thus, the above-described configuration and operation of the illustrated electrostatographic copying machine is merely an example of the electrostatographic copying machine to which the present invention can be applied, and therefore a detailed description thereof will be given. It is omitted in this specification.

Copy Paper Returning Means and Related Elements Next, referring to FIGS. 2 and 4 together with FIG. 1,
The copy paper returning means 136 and its related elements will be described. The returning mechanism 138 of the illustrated copy paper returning means 136 includes a plurality of one-side elements that define one side of the upstream side of the copy paper return path 130 and a plurality of other side elements that define the other side of the upstream side. In a specific example, the plurality of one-sided elements are composed of the return roller 174, the guide plate 176, the return roller 178, the guide plate 180, the return roller 182 and the guide plate 184, and the plurality of other side elements are the return roller 186. , Guide plate 188, return roller 19
0, a guide plate 192, a return roller 194, and a guide plate 196. Further, the return control mechanism 140 is provided with a copy paper return path 130.
A plurality of one-sided elements that define one side of the downstream side and a plurality of other-sided elements that define the other side of the downstream side thereof. Member 200, return roller 202, swing member 204, and return roller 2
06, and the other side elements are the return rollers 20.
8, a guide plate 210, a return roller 212, a guide plate 214 and a return roller 216.

In such a copying machine, the downstream side portion of the copy sheet return path 130, that is, the plurality of one-side elements and the plurality of other-side elements of the return control mechanism 140 are opened. More specifically, in the specific example, the movable frame 222 is swingably mounted between the front substrate 218 and the rear substrate 220 (FIG. 2) of the copying machine. The movable frame 222 has a front wall 224 and a rear wall 226 which are arranged at intervals in the front-rear direction (the direction from the lower left to the upper right in FIG. 2, the direction perpendicular to the paper surface in FIG. 4). A protrusion 224a provided at one end of 224 is rotatably attached to the front surface (outer surface) of the front substrate 218 via a pin 228, and a protrusion 226a provided at one end of the rear wall 226 fixes the pin 230. The rear substrate 220 is rotatably mounted on the rear surface (outer surface) of the rear substrate 220. Then, a plurality of one-sided elements of the return control mechanism 140, that is, the return rollers 19 are attached to the movable frame 222 thus mounted.
8, the swing member 200, the return roller 202, the swing member 204, and the return roller 206 are mounted as required. In the specific example,
As clearly shown in FIG. 4, the guide plate 184 among the plural one-sided elements of the returning mechanism 138 is also attached to the movable frame 222. The other elements of the copy sheet returning means 136, that is, the various components of the returning mechanism 138 (excluding the guide plate 184) and the plurality of other elements of the returning control mechanism 140 are disposed between the front substrate 218 and the rear substrate 220. It is installed as required. With this configuration, when the movable frame 222 is in the closed position shown in FIG. 4, the plurality of one-side elements and the plurality of other-side elements of the return control mechanism 140 are located downstream of the copy paper return path 130 between them. The sides are defined and the copy paper is returned as required, as described below, while
When the movable frame 222 is moved to the open position shown in FIG. 5, one end of the movable frame 222, that is, the downstream end of the copy sheet return path 130 is centered, and a plurality of one-side elements of the return control mechanism 140 and a plurality of elements are provided. The space between the other side elements is opened as required.

Further, in such a copying machine, the receiving projection 146 constituting the copy paper guide member is projected from the receiving plate 144 at the operating position (the position shown by the chain double-dashed line in FIG. 4) and the receiving plate 144. Is movably mounted between the non-acting positions (the positions shown in FIG. 3 and shown by the solid line in FIG. 4) located substantially below. Mainly referring to FIGS. 2, 3 and 4, the receiving plate 144 shown is composed of a substantially flat plate member, and in a specific example, from below the downstream side of the copy sheet returning path 130. It extends substantially horizontally to the right in FIG. Support leg portions 232a and 232b extending downward are provided at both side ends of the receiving plate 144, and flange portions 234a and 234b provided at lower ends of the support leg portions 232a and 232b are required for the bottom wall of the housing 2. It is installed on the street. A rectangular oscillating body 236 is arranged below the rear portion of the receiving plate 144. Protrusions 238 and 240 that project to the lower right in FIGS. 2 and 3 and to the right in FIG. 4 are provided on both sides of one end of the oscillator 236, and one protrusion 238 is located on the front side. The support leg 232a is rotatably attached to the inner surface in the substantially central portion in the left-right direction via a pin 242, and the other protrusion 240 is disposed on the inner surface in the substantially central portion in the left-right direction via the pin 244. It is mounted so that it can freely rotate. Therefore, the oscillating body 236 oscillates between a first position shown in FIG. 2 and shown by a two-dot chain line in FIG. 4 and a second position shown in FIG. 3 and shown by a solid line in FIG. It is installed freely. Then, the swing body 236 thus mounted
A copy paper guide member including a plurality of receiving projections 146 is provided on the upper surface of the. The receiving ridge 146 in the specific example has a substantially triangular shape and is inclined downward in the feeding direction of the copy paper, and is in the front-back direction of the copying machine (direction perpendicular to the paper surface in FIGS. 1 and 4), that is, A plurality of receiving plates 144 are arranged at intervals in the width direction. Further, an elongated rectangular opening 246 is formed in the receiving plate 144 corresponding to each of the receiving projections 146. Therefore, when the oscillating body 236 is in the first position, each receiving projection 146 projects above the receiving plate 144 through the corresponding opening 246, and the operating position shown in FIG. 2 and shown by a chain double-dashed line in FIG. Be fake. Then, the upper edge of each receiving projection 146 extends below the return control mechanism 140 of the copy paper returning means 136 while inclining downward toward the copy paper feeding direction, and defines the rear portion of the copy paper receiving portion 142. To do. on the other hand,
When the oscillating body 236 is moved to the second position, each receiving protrusion 146
Are retracted substantially correspondingly below the receiving plate 144 through the corresponding openings 246 to the inactive position shown in FIG. 3 and in solid line in FIG.

The oscillating body 236 is provided with a first actuating means 248 for moving the oscillating body 236 to the first position and a blocking means 250 for preventing the swinging motion of the oscillating body 236 beyond the second position. There is. Mainly referring to FIG. 4, the first illustrated
The operating means 248 of the
One end of is attached to the shaft member 254 so as to rotate integrally therewith. The shaft member 254 is rotatably mounted on a mounting member 256 fixed to the bottom wall of the housing 2.
An operation lever 258 is further attached to the 54 so as to rotate integrally. Further, a roller 262 is rotatably attached to the other end portion (tip portion) of the operating member 252 via a short shaft 260. The operating member 252 is movable by operating the operating lever 258 between an operating position shown by a chain double-dashed line in FIG. 4 and a non-operating position shown by a solid line in FIG. Also,
The blocking means 250 shown in the figure is composed of a blocking piece 263 having a substantially L shape, and is provided with support legs 232a and 232b provided on the receiving plate 144.
Is fixed to the inner surface of the support leg 232b (see FIG. 4).
Only those provided in) are shown. Therefore, the operating lever 25
8 is operated to move the operating member 252 to the working position,
The roller 262 acts on the lower end of the oscillating body 236 and causes the oscillating body 236 to pivot about the axis extending in the front-rear direction, that is, the pins 242 and 244 in the direction indicated by the arrow 264, and thus the oscillating body 236 is held at the first position. . In order to securely hold the rocking body 236 at the first position, it is preferable that the rocking body 236 is elastically held by the action of the actuating member 252. In a specific example, an elastically deformable contact plate 266 (which constitutes an elastically deformable portion) is provided at the rear lower end of the rocking body 236 (for example, the rocking body 236 and the contact plate 266 are integrally molded of synthetic resin. When the actuating member 252 is moved to the working position, the roller 262 acts on the lower surface of the contact plate 266. Therefore, when the operating member 252 is in the above-mentioned operating position, the rocking body 236 is moved by the arrow 264 by the elastic restoring action of the contact plate 266.
Is elastically biased in the direction indicated by, and thus the rocking body 236 is elastically held in the first position. In the specific example, the upper surface of the rear end portion of the oscillating body 236 has a protrusion 2 protruding upward.
68 is provided, and therefore the protrusion 268 abuts on the lower surface of the receiving plate 144, so that the rocker 2
The pivoting movement of 36 beyond the first position is reliably prevented. On the other hand, when the operating lever 258 is operated to move the operating member 252 to the non-acting position, the roller 262 is separated from the rocking body 236, and the rocking body 236 is swung in the direction indicated by the arrow 270 by its own weight. Then, the lower end thereof comes into contact with the contact portion 263a of the blocking piece 263, so that the turning motion beyond the second position is reliably blocked, and thus the rocking body 236 is held at the second position. In order to prevent the actuating member 252 or the roller 262 from directly contacting the bottom wall of the housing 2, as shown in FIG. 4, a cushioning member that can be formed of a rubber material or the like at a required portion of the bottom wall. 272 is preferably provided so that the actuating member 252 acts on the cushioning member 272.

Further, the movable frame 222 is also provided with a second actuating means 274 for moving the movable frame 222 to the closed position.
The illustrated second actuating means 274 includes an actuating member 276, and one end of the actuating member 276 is mounted so as to rotate integrally with the shaft member 278. The shaft member 278 is rotatably mounted between a pair of support brackets 282 (only one of which is shown) attached to a column 280 of the electrostatic copying machine. The shaft member 278 includes
Further, an operation lever 284 and a stop member 286 are attached so as to rotate integrally with this. The stop member 286 in the specific example is substantially W-shaped, and has a first stop surface 288 at one end thereof.
And a second stop surface 289 at the other end.
Further, a roller 290 is rotatably attached to the other end (tip portion) of the actuating member 276 via an end shaft 287, and the roller 290 acts on the movable frame 222. Therefore, the operating lever 284 is operated to move the operating member 276 to the operating position shown in FIG. 4 (when the operating member 276 is moved to the operating position, the first stop surface 288 of the stop member 286 abuts against the support column 280, and the operating member 276 moves. The turning motion beyond the above operating position is reliably prevented),
290 acts on a connecting plate 292 provided between the front wall 224 and the rear wall 226 of the movable frame 222 and extends in the front-rear direction, that is, the direction indicated by an arrow 294 (FIG. 5) around the pins 228 and 230. The movable frame 222 is held in the closed position. Although not shown in the specific example, each of the return rollers 198, 202 and 206 of the return control mechanism 140 moves over a predetermined range in a direction toward and away from the cooperating return rollers 208, 212 and 216, respectively. Each return roller 198, 202 and 206 is further provided with a biasing spring that elastically biases the return rollers 198, 202 and 206 toward the return rollers 208, 212 and 216. Therefore, when the movable frame 222 is returned to the closed position, the return roller is returned. The rollers 198 and 208, the return rollers 202 and 212, and the return rollers 206 and 216 are held in a nip state. In order to securely hold the movable frame body 222 in the closed position, it is preferable that the movable frame body 222 is elastically held by the action of the actuating member 276, similarly to the rocking body 236. On the other hand, the operating lever 284 is operated to move the operating member 276 to the retracted position shown by the chain double-dashed line in FIG. 5 (when it is moved to the retracted position, the second stop surface 289 of the stop member 286 comes into contact with the support column 280, When the turning movement of the actuating member 276 beyond the retracted position is blocked), the movable frame 222 turns in the direction indicated by the arrow 296 by its own weight. Then, in a specific example, the connecting plate 292 of the movable frame 222 contacts the roller 290 of the second actuating means 274 in the retracted position, so that the swinging motion of the movable frame 222 beyond the open position is surely performed. It is blocked and thus the movable frame 222 is held in the open position. In the specific example, the operating member 276 is the movable frame 2
Although it also acts as a swivel preventing means for preventing a swivel motion of 22 beyond the above-mentioned open position, instead of this, a separate swivel preventive means, for example, an abutment projecting upward on the rear end upper surface of the receiving plate 144. You may make it provide a protrusion.

In the specific example, a plurality of rocking members 200 and 204 (the rocking members 200 and 204 are provided at intervals in the axial direction of the support shafts 298 and 300 (FIG. 4). An electromagnetic solenoid (not shown) is attached. When a relatively long copy sheet is returned through the copy sheet return path 130, one electromagnetic solenoid (not shown) is energized and the swing member 200 is moved to the position shown by the solid line in FIG. 1 (see FIG. 4). And the position shown in FIG. 5) to the position shown by the chain double-dashed line in FIG. Therefore, a relatively long copy sheet is guided by the lower surface of the swing member 200 and received by the upper edge of the receiving projection 146, that is, the copy sheet receiving portion 142. When an intermediate length copy sheet is returned through the copy sheet return path 130, the other electromagnetic solenoid (not shown) is energized and the swing member 204 is moved to the position shown by the solid line in FIG. It is positioned from the (position shown in FIGS. 4 and 5) to the position shown by the chain double-dashed line in FIG. Therefore, the copy paper having the intermediate length passes through the upper surface of the swing member 200 and then is guided to the lower surface of the swing member 204 to be received by the upper edge of the receiving projection 146, that is, the copy paper receiving portion 142. On the other hand, when a relatively short copy sheet is returned, the electromagnetic solenoid is not energized. Therefore, at this time, the copy paper is the swing member.
It is received by the copy paper receiving portion 142 by the action of the return roller pairs 206 and 216 through the upper surfaces of 200 and 204.

Jam Processing Operation Next, the jam processing operation when a paper jam occurs in the copy paper retransmitting means 141 or the copy paper returning path 130 will be described mainly with reference to FIGS. 4 and 5.

When a paper jam occurs in the copy paper retransmitting means 141, the operating lever 258 is operated to rotate clockwise from the angular position shown by the two-dot chain line in FIG. 4 to the angular position shown by the one-dot chain line in FIG. . Thus, the operating member 252 is also integrally rotated with the rotation of the operation lever 258, and is positioned at the non-acting position shown by the solid line in FIG. Also, the operating member
When the 252 turns like this, the oscillating body 236 becomes an arrow 27 by its own weight.
By turning in the direction indicated by 0, and a part of which turns into contact with the blocking piece 263, it is positioned at the second position shown by the solid line in FIG. When positioned in the second position, the receiving projection 146 serving as a copying paper guiding member that defines the rear portion of the copying paper receiving portion 142 is located substantially below the receiving plate 144 through the opening 246, and the copying paper receiving portion 142 is located. When the copy paper is received in, the copy paper is placed on the receiving plate 144. Thus, as can be easily understood from FIG.
A relatively large space is created above the rear part of the 142, in other words, between the rear part of the receiving plate 144 and the movable frame 222, and the jammed paper in the copy paper resending means 141 can be easily removed through this space.

Further, when a paper jam occurs in the copy paper return path 130, especially in the downstream side portion thereof, the operation lever 258 is operated to move the receiving projection 146 to the non-acting position as described above, and then further. The other operating lever 284 is operated to turn counterclockwise from the angular position shown by the solid line in FIG. 5 to the angular position shown by the chain double-dashed line in FIG. Thus, the operating member 276 is also integrally rotated with the rotation of the operation lever 284, and is positioned at the retracted position shown by the chain double-dashed line in FIG. Also, when turning to the retracted position, the movable frame 222
Also pivots in the direction indicated by arrow 296 by its own weight, and the connecting plate 292 is in the retracted position.
It is positioned in the open position indicated by the chain double-dashed line in FIG. In the open position, the plurality of one-side elements of the return control mechanism 140 move downward with respect to the plurality of other-side elements, and the return rollers 198 and 208 and the return roller 202 are provided.
And 212 and the return rollers 206 and 216 are released from the nip state, and the downstream side of the copy sheet return path 130, that is, between the plurality of one-side elements and the plurality of other-side elements of the return control mechanism 140 is required. It will be released. Thus, as can be easily understood from FIG. 5, a space is created between the plurality of one-side elements and the plurality of other-side elements, and the copy paper return path 130, especially the jammed paper in the downstream side portion thereof is passed through the space. Can be easily removed.

In the specific example, the receiving ridge 146 has the following characteristics in relation to being movable between the operating position and the non-operating position. That is, by positioning the receiving projection 146 in the non-acting position, a relatively large space is created above the rear portion of the receiving plate 144. Therefore, by effectively utilizing the space thus created, the movable frame 222 is moved to the arrow 296.
It is possible to make a relatively large turn in the direction indicated by, and it is possible to greatly open between the plurality of one-side elements and the plurality of other-side elements of the return control mechanism 140 as compared with the conventional case. The paper jammed in can be easily removed.

When the movable frame 222 is configured to be rotatable near the upper surface of the receiving plate 144 as in the specific example, the copy sheet return path 130
To release the lever, operate the operating lever 258 to
Of the other operating lever 284
Must be operated to move the movable frame 222 to the open position, and if this operation is mistaken, the lower end of the movable frame 222 comes into contact with the upper end of the receiving projection 146 in the operating position ( Such contact causes damage to the receiving projection 146 or the like, or damage to the copy paper received in the copy paper receiving portion 142). Therefore, in order to prevent such an erroneous operation and also facilitate the opening operation of the copy paper return path 130, it is desirable to configure as described later.

On the other hand, after clearing the paper jam in the copy paper return path 130, the operation lever 284 is turned in the opposite direction to the above-mentioned direction to move the operating member 276 to the working position shown by the solid line in FIG. Then, the roller 290 acts on the connecting plate 292 to rotate the movable frame 222 in the direction indicated by the arrow 294, and thus the movable frame 222 is held in the closed position by the action of the second actuating means 274. In the closed position, the plurality of one-side elements and the plurality of other-side elements of the return control mechanism 140 are held in the positional relationship shown in FIG. 4 and shown by the solid line in FIG.
The copy sheet returned through the copy sheet return path 130 can be guided to the copy sheet receiving section 142 as described above as required.

Thereafter, the operation lever 258 is pivoted in the opposite direction to the above to move the operating member 252 to the operating position shown by the chain double-dashed line in FIG. As a result, the roller 262 acts on the contact plate 266 of the rocking body 236 to pivot the rocking body 236 in the direction indicated by the arrow 264, and thus the rocking body 236 is actuated by the first actuating means 248 to move to the first position. Held in. As a result, the receiving projection 146 provided on the rocking member 236 projects above the receiving plate 144 through the corresponding opening 246, and the receiving projection 146 receives the copy sheet returned through the copy sheet returning path 130 as required.

First Modified Example Next, a first modified example will be described with reference to FIGS. 6 to 8. In the first modified example, when the movable frame is moved to the open position, the receiving projection is moved to the non-acting position. In addition, in order to facilitate understanding, in the following description, substantially the same members as those in the specific examples shown in FIGS. 1 to 5 are designated by the same reference numerals.

Mainly referring to FIG. 6, in the illustrated first modified example, the oscillating body 236 is held in the first position shown in FIG. 6 (therewith, the receiving projection 146 is formed on the receiving plate 144). The first actuating means 248 and the movable frame 222 for holding the movable frame body 222 through the opening 246 to the working position projecting upward thereof are held in the closed position shown in FIGS.
A plurality of one-sided elements and a plurality of other-sided elements of the return control mechanism 140 together with a second actuating means 274 for defining a downstream side of the copy paper return path 130). 302
The link mechanism indicated by is interposed. To explain further,
The illustrated link mechanism 302 includes a first link member 304 and a second link member 306. One end of the first link member 304 is pivotally connected to a short shaft 287 attached to the tip of the actuating member 276 of the second actuating means 274, and the other end of the first link member 304 and The second link member 306 is pivotally connected to one end of the second link member 306 via a shaft 308, and the other end of the second link member 306 is provided on a mounting member 256.
6a is pivotally connected via a shaft member 310. In the specific example, further, an arm 312 extending downward is fixed to the other end of the second link member 306, and a roller 316 is rotatably attached to the tip of this arm 312 via a short shaft 314. Has been done. Further, a working piece 318 is fixed to the shaft member 254 rotatably mounted on the mounting member 256 so as to rotate integrally therewith. The roller 316 attached to the arm 312 acts on the free end of the action piece 318. Other configurations in the first modified example are substantially the same as those of the specific example shown in FIGS. 1 to 5.

The jam handling operation in the above-described first modified example is as follows.

Mainly referring to FIG. 7 and FIG. 8, when a paper jam occurs in the copy paper retransmitting means 141 and the upper rear portion of the receiving plate 144 is opened relatively large, the operating lever 258 is operated to move the sixth lever. It is turned clockwise from the angular position shown in the figure to the angular position shown in FIG. As a result, the operating member 252 is also integrally rotated with the turning of the turning lever 258, and is positioned at the non-acting position shown in FIG. When the actuating member 252 pivots in this way, the oscillating body 236 moves in the direction
It swivels in the direction indicated by 270, and part of it turns into the contact part of the blocking piece 263.
It is held in the second position shown in FIG. 7 by contacting 263a. Thus, when positioned at the second position, the receiving projection 146 defining the rear portion of the copy paper receiving portion 142 is provided with the receiving plate 144.
Located substantially below it through an opening 246 in the. Thus, as shown in FIG.
A relatively large space is created above the rear part of the second part, in other words, between the rear part of the receiving plate 144 and the movable frame 222, and the jammed paper can be easily removed in the copy paper resending means 141 through this space.

After removing the jammed paper, the operating lever 258 is pivoted in the direction opposite to that described above to move the operating member 252 to the operating position shown in FIG. As a result, the roller 262 acts on the contact plate 266 of the rocking body 236 and swivels upward, and thus the rocking body 236 is held in the first position shown in FIG. 6 by the action of the first actuating means 248. (The protrusion 268 provided on the upper surface of the rocking body 236 comes into contact with the lower surface of the receiving plate 144 to prevent the rocking motion of the rocking body 236 beyond the first position). When the oscillating body 236 is positioned as described above, the receiving projection 146 provided on the upper surface of the oscillating body 236 protrudes above the receiving plate 144 through the corresponding opening 246 and is located in the working position as shown in FIG. The copy paper returned through the paper return path 130 is received as required.

On the other hand, when a paper jam occurs in the copy paper return path 130, especially on the downstream side thereof, and the downstream side of the copy paper return path 130 is opened, the operation lever 284 is operated to operate at the angular position shown in FIG. To the angular position shown in FIG. 8 in a clockwise direction. As a result, the operating member 276 is also integrally rotated with the rotation of the operating lever 284, and the operating member 276 is positioned at the retracted position shown in FIG. Also, the operating member 276
When swiveled, the first link member 304 and the second link member 306 are caused by the shaft member 310 being rotatably supported by the support projection 256a as shown in FIG. axis
The arms 312 are swung in directions close to each other, and in particular, the swiveling motion of the second link member 306 also swivels the arm 312 in the direction indicated by the arrow 320 (FIG. 8). When the arm 312 pivots like this, the roller 316 provided at the tip end thereof acts on the action piece 318 attached to the shaft member 254, and the actuating member 252 also does not act as shown in FIG. 8 via the action piece 318. It is located at the position (the same position as that shown in FIG. 7). When the actuating member 276 is moved to the retracted position (the second stop surface 289 of the stop member 286 abuts the support column 280, the swinging motion of the actuating member 276 beyond the retracted position is prevented). The 222 pivots in the direction indicated by the arrow 296 by its own weight, and its connecting plate 292 abuts on the roller 290 of the second actuating means 274 in the retracted position, whereby the movable frame 222 pivots beyond the open position. Is blocked, and the movable frame 222 is held in the open position. Further, when the operating member 252 is moved to the non-acting position,
In the same manner as described above, the rocking body 236 is held in the second position by contacting a part of the rocking piece 262 with the blocking piece 262.
46 is placed in a non-acting position substantially below the receiving plate 144. Therefore, by operating the operation lever 284, the movable frame body 222 is positioned at the open position and the receiving projection 146 is positioned at the non-acting position, and therefore the movable frame body 222 is positioned at the upper edge of the receiving projection stripe 146. Can be effectively avoided. When the movable frame 222 is moved to the open position, as shown in FIG. 8, a downstream side portion of the copy paper return path 130, that is, between the plurality of one side elements and the plurality of other side elements of the return control mechanism 140. Is opened as required, and the jammed paper in the copy paper return path 130, especially its downstream side, can be easily removed through the space created by the opening. As can be easily understood from the above description, the copy paper return path 130 can be opened as required by simply operating the operation lever 284. However, after operating the operation lever 258, the operation lever 284 can be opened. The copy paper return path 130 can also be operated.
Can be opened.

After clearing the paper jam in the copy paper return path 130,
The operating lever 258 is turned counterclockwise from the angular position shown in FIG. 8 to the angular position shown in FIG. As a result, the operating member 252 is also rotated with the rotation of the operating lever 258, and the operating member 252 is positioned at the operating position shown in FIG. Further, when the operating member 252 is pivoted in this way, the shaft member 2
The action piece 318 attached to the 54 is the roller attached to the arm 312.
Acting on 316, this arm 312 is caused to pivot in the direction opposite to arrow 320 (FIG. 8), and the other actuating member 276 is also shown in FIG. 6 via the second link member 306 and the first link member 304. It is located in the working position. When the actuating member 252 is moved to the working position, the roller 262 acts on the contact plate 266 and swivels upward, and the rocking body 236 is positioned at the first position, whereby the receiving projection 146 is moved to the working position. Held in position. Further, the other actuating member 276 is positioned at the working position (the first stopping surface 288 of the stopping member 286).
Of the actuating member 276 is prevented from swiveling beyond the above-mentioned working position by contacting the supporting column 280), the roller 290 acts on the connecting plate 292 to swivel upward, and the movable frame 222 is moved to the position shown in FIG. It is held in the closed position shown in. Thus,
By simply operating the operating lever 258, the receiving projection 146 can be moved to the working position and the movable frame 222 can be moved to the closed position. It should be noted that, as will be readily understood, the operation lever 252 may be rotated as described above after the operation lever 284 is operated as required.

As described above, in the first modified example, it is possible to effectively prevent the movable frame 222 from coming into contact with the receiving projection 146, and perform the jam processing operation more easily and easily. be able to.

Second Modified Example Next, a second modified example will be described with reference to FIG. In the second modified example, the following points are further improved as compared with the first modified example.

First, in the second modification, the first actuating means 24
The oscillating body 236 is configured to be held in the second position by preventing the swinging of the eight actuating member 252 beyond the retracted position (the position shown in FIG. 9). That is, the blocking means 250 'shown in the figure is composed of an abutting member 322 extending upward from the bottom wall of the housing 2, and an abutting portion 322a capable of abutting the actuating member 252 is provided at the upper end of the abutting member 322. ing. Therefore, by making contact with the contact portion 322a, the pivoting movement of the operating member 252 beyond the retracted position is reliably prevented.
With this structure, the second stop surface of the stop member 286 'can be omitted, as will be easily understood from the description below.

Secondly, in the second modified example, the action piece 318 ′ that rotates integrally with the shaft member 254 is such that the portion acting on the roller 316 is curved outward in an arc shape toward the roller 316.

Other configurations in the second modification are substantially the same as those in the first modification shown in FIGS. 6 to 8.

When the operating lever 284 is operated to rotate the operating member 276 in the clockwise direction in FIG. 9 in the second modified example, the arm 312 causes the action piece to move through the first link member 304 and the second link member 306. It acts on 318 'and this acting piece 31
The actuating member 252 is also swung clockwise in FIG. 9 via 8 '. Then, the contact member 3 of the contact member 322 is swung so as to rotate.
Abutment against 22a prevents the actuating member 252 from pivoting beyond the retracted position, thus retaining the actuating member 252 in the retracted position. When the operating member 252 is held in the retracted position, the downward swinging motion of the oscillating body 236 due to its own weight is also prevented (the roller 262 provided on the operating member 252 is the oscillating body).
By acting on the contact plate 266 of 236,
The pivoting movement of 236 beyond the second position is prevented) and the rocker 236 is positioned in the second position, whereby the receiving ridge 146 provided on the upper surface thereof is held in the inoperative position. Further, when the actuating member 252 is positioned at the retracted position, as can be easily understood from FIG. 9, the counterclockwise swinging motion of the arm 312 in FIG. 9 is also prevented, which causes the actuating member 276 to retract position. The turning motion beyond (the position shown in FIG. 9) is reliably prevented. Therefore, the operating member 27
When the roller 290 attached to 6 acts on the connecting plate 292, the swinging motion of the movable frame 222 beyond the open position (the position shown in FIG. 9) is blocked, and the movable frame 222 is required to be in the open position. Will be kept as the street.

On the other hand, as can be easily understood from FIG. 9, the operation lever
By operating 258 as desired, the oscillating body 236 is brought to the first position and thus the receiving ridge 146 to the operating position, and the movable frame body 222 is brought to the closed position in substantially the same manner as the first modification. You can fake it. At this time, in the second modification, since the portion of the action piece 318 'that acts on the roller 316 is curved outward in an arc shape toward the roller 316, the operation lever 258 is operated with a relatively small force. It is possible to turn from the angular position shown in FIG. 9 to the required angular position.

As described above, in the second modified example, the same effect as that of the first modified example can be achieved, but the configuration is somewhat simplified as compared with the first modified example. And the jam handling operation is somewhat easier.

[Brief description of drawings]

FIG. 1 is a schematic sectional view showing a specific example of an electrostatic copying machine constructed in accordance with the present invention. 2 is a perspective view showing a part of the vicinity of the rear portion of the copy sheet resending means in the electrostatic copying machine of FIG. FIG. 3 is a perspective view corresponding to FIG. 2, showing a state in which the receiving projection is in a non-acting position in the electrostatic copying machine of FIG. FIG. 4 is a solid line in the vicinity of the rear portion of the copy sheet resending means in the electrostatic copying machine of FIG. 1 when the oscillating body is in the second position, and in the first position. Sectional drawing shown by a two-dot chain line. FIG. 5 is a cross-sectional view showing the state when the movable frame body is in the closed position in the electrostatic copying machine of FIG. 1 by a solid line and the state when the movable frame body is in the open position by a chain double-dashed line. FIG. 6 is a sectional view showing the vicinity of the rear part of the copy sheet resending means of the first modified example. FIG. 7 shows that in the first modified example of FIG.
FIG. 6 is a cross-sectional view showing a state when the position is. FIG. 8 shows that the oscillating body is the second one in the first modification example of FIG.
FIG. 6 is a cross-sectional view showing the state when the movable frame body is in the open position and in the open position. FIG. 9 is a cross-sectional view showing the vicinity of the rear portion of the copy sheet retransmitting means in the second modified example with the oscillating body in the second position and the movable frame body in the open position. 2 ... Housing 48 ... Copy paper feeding means 58 ... Copy paper conveying path 130 ... Copy paper returning path 136 ... Copy paper returning means 140 ... Return control mechanism 141 ... Copy paper resending means 142 ... Copy paper receiving section 144 ... Receiving plate 146 ... Receiving line 222 ... Movable frame 236 ... Oscillating body 302 ... Link mechanism

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Kenji Sasaki, Kenji Sasaki 1-2-2, Tamatsukuri, Higashi-ku, Osaka Mita Industrial Co., Ltd. (56) References JP-A-59-211059 (JP, A) JP-A-59 -211061 (JP, A)

Claims (14)

(57) [Claims] 1. A copy paper transport path, a copy paper supply means for supplying a sheet copy paper to the copy paper transport path, a copy paper return path, and a copy paper returned through the copy paper return path. And a copy paper retransmitting means for re-supplying the received copy paper to the copy paper transport path, wherein the copy paper supplied from the copy paper supply means to the copy paper transport path passes through the copy paper transport path. An image is formed on one side of the copy paper while being conveyed, and the copy paper having the image formed on one side is selectively introduced into the copy paper return path and passed through the copy paper return path. A mold of a type in which an image is formed on the other side of the copy paper while being returned to the re-transmitting means, then re-transmitted from the copy paper re-transmitting means to the copy paper conveying path, and being re-conveyed through the copy paper conveying path. In electrocopiers; hand for resending the copy paper Includes a copy paper receiving portion that receives the copy papers returned through the copy paper returning path in a stacked state, and the copy paper receiving portion includes a receiving plate that extends substantially flat in the feeding direction of the copy papers and the receiving plate. The copying paper guide member has a plurality of receiving projections arranged at intervals in the width direction of the plate, and the copying paper guiding member has the plurality of receiving projections formed on the receiving plate. An electrostatic copying machine, wherein the electrostatic copying machine is movable between a working position protruding upward through the plurality of openings formed therein and a non-working position located substantially below the receiving plate. 2. A first position and a second position are provided below the receiving plate.
The rocking member is disposed so as to be rockable between the rocking member and the position, and the copy paper guiding member is provided on the upper surface of the rocking member. When the rocking member is in the first position, the copy paper guiding member is provided. The electrostatic copying machine according to claim 1, wherein the member is in the operating position, and when the rocking member is moved to the second position, the copy paper guiding member is moved to the non-operating position. 3. An electrostatic copying machine according to claim 2, further comprising a blocking means associated with the rocking member for blocking the swinging motion of the rocking body beyond the second position. 4. The oscillating body is further provided with first actuating means for moving the oscillating body to the first position, and by locating the first activating means in the operating position, the oscillating body is moved. The electrostatic copying machine according to claim 2, wherein the moving body is held at the first position. 5. The elastic body is provided with an elastically deformable portion, and when the first actuating means is brought to the operating position, the first operating means is moved to the first position.
5. An electrostatic copying machine according to claim 4, wherein a part of the operating means of said means acts on said elastically deformable portion, and thus said rocking body is elastically held at said first position. 6. A copy paper transport path, copy paper supply means for supplying a sheet copy paper to the copy paper transport path, a copy paper return path, and a copy paper returned through the copy paper return path. And a copy paper retransmitting means for re-supplying the received copy paper to the copy paper transport path, wherein the copy paper supplied from the copy paper supply means to the copy paper transport path passes through the copy paper transport path. An image is formed on one side of the copy paper while being conveyed, and the copy paper having the image formed on one side is selectively introduced into the copy paper return path and passes through the copy paper return path. A mold of a type in which an image is formed on the other side of the copy paper while being returned to the re-transmitting means, then re-transmitted from the copy paper re-transmitting means to the copy paper conveying path, and being re-conveyed through the copy paper conveying path. In electrocopiers; hand for resending the copy paper Includes a copy paper receiving portion for receiving the copy papers returned through the copy paper returning path in a stacked state, the copy paper receiving portion extending substantially flat in the copy paper feeding direction and the copy paper guide member. The copy paper guide member is movable between an operating position projecting upward through an opening formed in the receiving plate and a non-operating position located substantially below the receiving plate, and A downstream side portion of the copy paper return path is defined between a plurality of one-side elements and a plurality of other-side elements of the return control mechanism, and the plurality of one-side elements are in a closed position and an open position in which the one-side element is retracted from the closed position. It is mounted on a movable frame body movably mounted between and, and when the movable frame body is set to the open position, the copy paper guide member is set to the non-acting position. An electrostatic copying machine characterized by the following. 7. The receiving plate has a plurality of openings arranged at intervals in the width direction, and the copy paper guide member projects upward through the plurality of openings formed in the receiving plate. 7. An electrostatic copying machine according to claim 6, further comprising a plurality of receiving projections movable between an operating position and a non-operating position located substantially below the receiving plate. 8. A first position and a second position below the receiving plate.
The rocking member is disposed so as to be rockable between the rocking member and the position, and the copy paper guiding member is provided on the upper surface of the rocking member. When the rocking member is in the first position, the copy paper guiding member is provided. 7. The electrostatic copying machine according to claim 6, wherein the member is in the operating position, and when the rocking member is moved to the second position, the copy paper guiding member is moved to the non-operating position. 9. A first operating means for moving the oscillating body to the first position and a second operating means for moving the movable frame body to the closed position are provided, and the first operating means is provided. By setting the means in the operating position, the rocking body is held in the first position, and by setting the second operating means in the operating position, the movable frame body is held in the closed position. Further, the movable frame is moved to the open position by moving the second actuating means from the working position, and the first frame is moved with the movement of the second actuating means.
9. The electrostatic copying machine according to claim 8, wherein the actuating means is moved from the operating position so that the oscillating body is also moved to the non-operating position. 10. A link mechanism is interposed between the first actuating means and the second actuating means, and when the second actuating means is moved from the operating position, the link mechanism is actuated. 10. An electrostatic copying machine according to claim 9, wherein the first actuating means is moved from the operating position. 11. The elastic body is provided with an elastically deformable portion, and when the first actuating means is brought to the operating position, the first operating means is moved to the first position.
10. An electrostatic copying machine as set forth in claim 9, wherein a part of the operating means of said means acts on said elastically deforming portion, and thus said rocking body is elastically held at said first position. 12. The electrostatic copying machine according to claim 9, wherein the movable frame is elastically held in the closed position by the action of the second actuating means. 13. The second of the rockers in relation to the rocker.
9. The electrostatic copying machine according to claim 8, further comprising a blocking means for blocking a swinging motion exceeding the position of. 14. An electrostatic copying machine according to claim 6, further comprising a swivel preventing means for preventing swivel motion of the movable frame beyond the open position in association with the movable frame. .