JPS60256265A - Document carrying equipment - Google Patents

Abstract

PURPOSE:To attain ease of carrying of a thin and a thick original to the reading section by moving independently an original plate and an original feeding equipment respectively to the main body equipment. CONSTITUTION:One end of the original platen 3 is supported by a pedestal platen 23 in the main body 1 via a slide rail 22 provided in the reciprocating direction of the platen 3, the ridge this side of the plate 3 is inserted and supported to a guide rail 24 arranged in the reciprocating direction of the platen 3 to the main body 1 and guided along the rail. Then the platen 3 is slidable along the rails 22, 24 toward the reciprocating directions (a), (b) but not moving in a direction at right angles to the directions (a), (b). Moreover, the original feeding device 2 is slidable along the rail 27 in the directions (a), (b) similarly but not moving in a direction at right angles to the (a), (b).

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a device for conveying documents to a reading position in a device for reading and processing documents of a copying machine φ facsimile.

[Conventional technology and problems]

In recent years, various document reading and processing devices have become popular for transmitting information.
It has become widely used even in small businesses. In order to streamline and automate the work of such processing devices as much as possible, various devices for automatically transporting documents to the document reading position of the processing devices have been developed and put into practical use.

The information to be transmitted includes a thin sheet document and a thick document, such as a book document. There is a need for a document reading and processing device that can be used for both types of documents, and is also required to be small in size, simple in handling operations, inspection and maintenance, and low in cost.

The biggest bottleneck in meeting the above requirements lies in the switching of the conveyance of sheet (thin) originals and book (thick) originals to the reading section.

[Purpose, structure, and effect of the invention]

This invention was developed with the aim of obtaining something that does not have such problems.
1, a platen glass or document table 3 that reciprocates to convey documents to the reading position 8, and a document feeder i2 that feeds a sheet document 0 (S) (FIG. 2) toward the document table 3. Consists of three parts. It also includes switching means 38, 43, and 44 for switching between sheet document processing and book document processing,
For sheet originals, use the sheet original feeder i! i2 is connected to the main unit 1 and stopped, and the sheet original 0 (S) is sent from the sheet original feeding device M2 toward the original table 3 which is reciprocating.

In the case of a book document, the sheet document feeder 2 reciprocates together with the document table 3 to feed the book document 0 (B) (FIG. 7) placed on the document table 3. 411 is constructed so as to be held and conveyed by the device 2.

Further, the document feeder 2 supports the document table 3 through a guide member 27 that can move only in the reciprocating direction and the direction of movement, and also supports the document table 3 and the document feeder 2 in the main body device l.
It is constructed so that it can move independently with respect to l.

In the embodiment of the present invention, the document feeder 2 is supported on the document table 3 via the guide rail 27. However, the document feeder 2 may be supported on the main body Ml via the guide rail 27. The invention is workable.

By configuring as shown in letter L, a document conveying device that can be used for both sheet mode and book mode can be constructed easily and compactly. Then, just switch the mode and operate 8-38.
Mechanical conversion of sheet original conveyance and two-way original conveyance is performed, and I'if reverse cutting to book sheets can be performed immediately, and the operation is simple and inexpensive.

Although the present invention is applied to various document reading devices, it is particularly applicable to electronic copying machines and is extremely suitable for miniaturizing the electronic copying machines.

〔Example〕

An embodiment in which the present invention is applied to an electronic copying machine will be described below.

FIG. 1 is an external perspective view, and FIG. 2 is a vertical 11-plane view.
The equipment is a copying machine with a moving manuscript table (hereinafter referred to as a copying machine), 2
3 is a document feeding device, and 3 is a transparent document table that is connected to the copying machine body by means of cable interlocking or binion rack interlocking, as shown in Figure 1.
The solid line water level t in FIG. 2 is set as the home position, and the pump is driven forward a to the left in the figure as shown by the two-dot chain line, and when it reaches the end point of the forward movement, it is driven back to the initial home position. The reciprocating drive mechanism is omitted from the drawings because a well-known mechanism can be used as appropriate.

When copying a sheet original (hereinafter referred to as sheet mode), the original feeding device 2 is fixed to the copying machine main body l side by switching means 38 and 43, which will be described later. A sheet document 0 (S) (Fig. 2) inserted into the paper feed port 5 with one side of the document feeder t2 as the paper feed tray 4 is guided to the document table 3 that moves to the left and subjected to slit exposure. When the document table moves back, the document tray 6
sent to.

In the case of copying a book or other thick original (hereinafter referred to as book mode), the switching means 38-44 reversely fixes the original feeder 2 to the original platen 3 side. The paper discharge tray 6 is rotated around the hinge portion 6a as shown by the two-dot chain line in FIG. 6, and folded onto the paper feed tray 4. With the document feeding device 2 temporarily raised from the document table 31- around the shaft 45 as shown by the two-dot chain line in FIG.
B) (FIG. 7) The device 2 is placed on top as a document holder, and the document feeding device 2 is also reciprocated integrally with the document table 3.

A document processing mechanism is housed in the copying machine main body l as shown in the second figure. This example shows an example of an electronic copying mechanism.
Slit exposure section 8, original illumination lamps 8a, reflection mirror 9. ~94, imaging lens 10, photosensitive drum 11, chargers 12 and 13, developing section 14. Transfer section 15, cleaning section 16, transfer paper feeding section 17, transfer paper guides 18 and 19,
It consists of a fixing device 20 and a tray 21.

FIG. 3 and FIG. 5 are cross-sectional side views taken along the line ■--■ and the line V--V in FIG. 1, respectively. One side of the document table 3 (the opposite side in FIG. 1) is supported by a receiving plate 23 in the main body 1 via an Accuride rail 22 arranged in the reciprocating direction of the document table 3, and the front side of the document table 30 is As shown in Figs. 1.5 to 7, the edges of the original plate 3 are fitted into and supported by guide rails 24 disposed in the main body 1 in the direction of reciprocating movement of the document table 3, and are guided along the rails. 25 is manuscript table 3
It is a frame plate attached to one side of the frame and extended laterally.

An Accuride rail 27 is also fixed to the frame plate 25, and a bottom plate 39 of the document feeder 2 is fixedly supported on this rail.

The document table 3 has rails 22- in the forward direction a and backward direction.
24, but is immovable in the direction a@b, which is the self-direction angle. Also, the document feeder 2
Similarly, it is possible to slide along the rail 27 in the asb direction, but it is immovable in the direction perpendicular to the ab direction.

In other words, the document table 3 and the document feeder 2 can each independently slide in a direction relative to the main body 1 of the copying machine, but remain immovable in a direction perpendicular to the direction 1.

Reference numerals 26 (Figs. 1, 5, 6, and 7) indicate a pair of positioning rollers provided on the left and right sides of the front side of the document feeder 2. Also, 2
Reference numeral 8 denotes a pair of cams extending from the bottom plate 39, and one pair is provided on the left and right sides. Reference numeral 29 denotes a pair of guides formed in a part of the document feeding device 2, and a pair of guides are formed on the left and right sides of the rear side of the position facing the cam 28.

Reference numeral 7 designates a sheet mode book mode switching shaft, which is formed by a pair of left and right cut pieces 39a, 39a ( As shown in FIG. 8), the document table 3 is rotatably supported by a bearing with its axis parallel to the direction of reciprocating movement of the document table 3.

39b and 39b are bearings mounted on the cut and raised pieces 39ae and 39a.

Reference numeral 38 denotes a mode switching lever fixed approximately at the center of the mode switching shaft 7, and the shaft 7 is rotated clockwise or counterclockwise by this lever.

A total of four opening/closing oscillating plates 42 (Fig. 8), two on each end of the shaft 7, are fixedly attached to the left and right ends of the shaft 7. are each link 4
0 is connected via a shaft 41. The other ends of the left and right links 40 are connected to the document feeder 2 via a shaft 45.

The document table 3 and the document feeder 2 are positioned at the home position shown by the solid lines in Figures 1 and 2. Push and move them by hand to position them at their respective home positions.When the document table 3 is located at the home position, this is detected by the home position sensor (sensor 101 of the control circuit in FIG. 16).
When the mode is changed and the 8-38 is rotated clockwise in FIG. Four parts 43A of the main body side fixing member 43 fixed to the main body l side
(FIGS. 3-4), and as a result, the document feeder 2 becomes immovably latched to the copying machine main body 1 side 18.

Also, by this switching, the protrusion 38C of the switching lever 38 detects that the seat mode detection micro switch 463 attached to the bottom plate 39 has been switched to the seat mode OWL, and inputs it to the control circuit Zoo (FIG. 16). be done.

Part-1- As the holding lever 38 is switched to the seat mode S position and rotated, the shaft 7 and the opening/closing swing plate 4 fixed to the shaft are rotated.
2 rotates clockwise. As a result, the opening/closing swing plate 42 is placed in the 1-direction upright position as shown in FIG. The entire portion is pulled toward the shaft 7 side, the positioning roller 26 is placed on the guide rail 241-, and the guide 29 is placed on the cam 281-, so that the document feeder 2
The height direction of the platen glass 3 is determined. In this state, a gap 31 is created between the pressure bonding seat 30 provided in the document feeder 2 and the document table 3.

Conversely, when the mode switching lever 38 is rotated counterclockwise in FIG.
A is removed from the recess 43A of the fixing member 43 on the copying machine main body 1 side, but another protrusion 38B of the lever 38
As a result, the document feeder 2 is disengaged from the copying machine main body l side, and conversely is locked to the document table 3 side. Become. Also, due to this switching, the protrusion 38D of the switching lever 38
When the book mode detection microswitch 46B attached to the bottom plate 39 is turned ONL, it is detected that the book mode has been switched to the book mode and is inputted to the control circuit 100.

On the other hand, as the switching lever 38 is switched to the book mode B position, the shaft 7 and the opening/closing swing plate 42 are rotated counterclockwise. As a result, the opening/closing swing plate 42 changes from the upward standing position shown in FIG. 5 to the sideways falling position shown in FIG. 2 on the document table 3 side is entirely pushed and moved in the direction away from the shaft 7 side, and the positioning roller 2
6 comes off from the top of the guide rail 24 and falls down, and the guide 29 comes off from the top of the cam 28 and falls down. The fruiting device 42 is changed from the state shown in FIG. 5 to the state where the pressure bonding sheet 30 is in contact with the surface of the document table 3 as shown in FIG. 6.

On the outer surfaces of the left and right ends of the opening/closing rocking plate 42 fixed to the mode switching shaft 7, there are horizontal bins 42 as shown in Figures 8 and 9.
a, and install a trouble spring 4 between each bottle and the bottom plate 39.
2b is stretched. This trouble spring causes the switching lever 38 to be set to the sheet mode S position or the book mode B.
The cutting state of the position is stably maintained.

That is, when in sheet mode S, the document feeder 2 is locked to the copying machine main body L side and reciprocated only about the document table 3, and in this case, the sheet document is transferred between the document table 3 and the pressure-bonded sheet 30 of the document feeder w2. There is a gap between the document feeder 2 and the press sheet 30 so that the document feeder 2 can pass smoothly between the document table 3 and the press sheet 30, and so as not to cause a contact sliding load between the document table 3 and the press sheet 30 when the document table 3 moves back and forth. 31. When in book mode B, the document feeder 2 is locked to the document table 3 side and reciprocated together with the document table 3. In this case, the document feeder 2 is moved in order to bring the book document into close contact with the document table 3. The pressure bonding sheet 30 surface is configured to be displaced in a direction in which it comes into contact with the document table 3 surface.

Fig. 1O is an enlarged sectional view of the document conveyance and ejection roller mechanism portion of the document feeder 2, Fig. 11 is a sectional view of the section taken along line XI-XI in Fig. 1O, and Fig. 12 is the section shown in Fig. 10 - ■ - cutting line. 13 is a rear view of the drive system.

In FIG. 11, 51 and 52 are the front side plate and rear side plate of the document feeder 2, respectively, and the front arm support shaft 53. and a rear arm support shaft 532 are fixedly provided. In addition, each arm support shaft 53. - At 532, there is a conveyance roller arm 54. @
542 is swingably supported. The conveyance roller 56 is fixed to the conveyance roller shaft 55. The conveyance roller 55 is connected to the conveyance roller arm 54. - Rotatably supported by 542. Conveyance roller arm 54. A conveyance roller spring 57 (FIG. 10) is applied to each of Φ542, and presses the conveyance roller 56 against the surface of the document table 3.

A paper discharge drive arm 58 and an idler gear 59 (see p. 811@13) are supported on the rear arm support shaft 532. Further, a paper ejection drive shaft 60 is fixedly mounted on the paper ejection drive arm 58, and an idler gear 5 is connected to the shaft 60.
A paper ejection drive and a reroller 61, which are integrally constructed with a gear 61a meshing with a gear 9, are rotatably supported. A friction plate 62 is attached to the frame plate 251- in the direction of reciprocating movement of the document table 3.

The paper discharge drive and reroller 61 are in contact with this friction plate 62-1-, and are rotated by the reciprocating movement of the document table 3.

Reference numeral 63 denotes a paper ejection roller shaft, on which a paper ejection roller 64 and a paper ejection gear 65 made of an elastic material such as sponge are fixedly mounted. The paper ejection gear 65 meshes with the idler gear 59, and drives the paper ejection and reroller 61 as the document table 3 reciprocates.
The rotation of gear 61aΦ idler gear 59 and paper discharge gear 65
It is transmitted to the paper discharge roller 64 via the pot shaft 63, and the roller 64 rotates.

66 (Figs. 10, 12, and 13) is the paper feed roller shaft;
A paper feed roller 67 and a paper feed gear 68 are fixedly installed, and are supported by bearings on a rotating shaft between the front side plate 51 and the rear side plate 52. A document holding arm 69 is rotatably engaged with the paper feed roller shaft 66, and the document holding arm 69 rotatably supports a document holding roller shaft 71 on which a document holding roller 70 is fixed. are doing. A document presser lever 72 (FIG. 1O) is attached to the document presser arm 69, and presses the document presser roller 70 against the surface of the document table 3.

A paper feed drive shaft 74 is fixed to the paper feed drive arm 73 (Figs. 12-13) rotatably supported by the paper feed roller shaft 66-t-. is paper feed gear 6
A gear 75a meshed with the gear 75a, a paper feed drive integrated with the gear 75a, and a reroller 75 are rotatably supported.

The paper feed drive and reroller 75 are the same as the above-mentioned paper ejection drive and reroller 6.
1, it is in contact with the "-" surface of the friction plate 62, and the original platen 3
The rotation is transmitted to the paper feed roller 67 via the gear 75a, the gear 68, and the shaft 66, and the roller 67 is rotationally driven.

In other words, as will be described later, in the sheet mode, the conveyance roller 56 and document holding roller 70 that press the sheet document against the surface of the document table 3 simply transfer and rotate the document table 3 surface as the document table 3 reciprocates to hold the document. Press the document onto the platen surface and eject roller 64
The No. 11 paper feed rollers 67 are provided separately from the conveyance roller 56 and the document holding roller 70, respectively, and are driven to rotate by receiving power transmission from the rerollers 61 and 75 and a drive for converting the forward motion of the document table 3 into rotational motion. With this configuration, the original is conveyed together with the original table 3 without any misalignment on the surface of the original table.

Reference numeral 76 (Fig. 10) is a paper feed swing shaft, and on the shaft there is a plate spring 78 that supports the paper feed roller 77 and a registration shutter 79.
are integrally provided. In addition, the paper feed swing shaft 76 ]-
A paper feed swing arm 80 (FIG. 13) is fixedly attached to the paper feed swing arm 80 (FIG. 13). This paper feed swing arm is engaged with a paper feed plunger link 82 that is engaged with a paper feed plunger 81, and is swung around a shaft 76 when the paper feed plunger 81 is turned on and off. Therefore, when the paper feed plunger 81 is off, the leaf spring 78
The registration shutter 79 is held in a first attitude shown by a solid line in FIG. 10, and when turned on, is held in a second attitude shown by a two-dot chain line. In the first position, the paper feed roller 77 is held upward from the above-mentioned paper feed roller 67.
Further, the tip of the registration shutter 79 is located at the sheet exit portion of the sheet feeding sheet path 5a extending from the sheet feeding port 5 to the document table 3, so that the sheet exit portion is closed. In the second position, the paper feed roller 77 descends relative to the paper feed roller 67 and is held in contact with the paper feed roller, and the tip of the registration shutter 79 escapes from the sheet exit portion of the paper feed sheet path 5a. The sheet exit section is held open by the movement.

Reference numeral 83 (FIG. 10) denotes, for example, a reflective optical sensor for detecting the presence or absence of a document, which is disposed in the paper feed sheet path 5a.

Reference numeral 84 denotes a sheet original scooping shaft, and a sheet original scooping sheet 85 is attached to and supported by the shaft. As will be described later, this scooping sheet 85 serves to separate the read-processed sheet original from the original table 3 in the sheet mode. 86 (FIG. 13) is a scooping swing arm fixedly attached to the scooping shaft 84. This arm 686 is engaged with a scooping plunger link 88 that is engaged with a scooping plunger 87, and swings about the shaft 84 when the scooping plunger 87 is turned on and off. When the plunger 87 is off, the tip of the scooping sheet 85 is held in the first position shown by the solid line in FIG. The tip is held in a second attitude in which it is in contact with the surface of the document table 3. The scooping sheet 85 is made of an elastic sheet-like material such as a Mylar sheet (polyethylene terephthalate sheet) so that it contacts the surface 1- of the document table 3 uniformly over its entire width.

By constructing the sheet document scooping means with the elastic sheet-like body 85 in this way, it is possible to reliably and smoothly peel off the sheet document that is in close contact with the document table 3F without damaging the document.

Regarding this sheet document scooping sheet 85, if the tangent line of the sheet to the document table 3 is perpendicular to the reciprocating direction of the document table 3, the edge end surface of the full width of the sheet document will be at the tip of the document document table 85. It is conceivable that the entire width of the document may hit the edge surface at once, causing an equilibrium impact on the document, causing damage to the edge of the document or misalignment of the document.

Therefore, in this example, as shown in FIG. 14, a tangent 301 between the scooping sheet 85 and the document table 3 is at a certain angle .theta. In other words, original 0 (S) and scooping sheet 85
Adjust the angle θ so that the documents collide smoothly and the original is scooped up.
is the provision. Especially the first corner part 3
04 has a larger angle θ'.

In this way, by attaching the scooping means at an angle to the edge line of the document so that the document and the scooping means do not collide with the full width at once, the document is always scooped smoothly from the document table.

Further, the positional relationship in the depth direction between the scooping sheet 85 and the document is such that the back wall on the paper feed tray is configured such that the back edge of the document is always located at the steeply angled portion 304 of the scooping sheet. .

The platen glass 3, which is a document table, has a surface that has a coefficient of friction greater than the friction coefficient between the document O(S) and the conveyance roller 56 and document holding roller 70, which are auxiliary means for pressing the document onto the document table surface, as shown by reference numeral 3a in FIG. , a transparent material layer (friction sheet layer) is formed of a material that increases the coefficient of friction between the document and the document table. This layer 3a is formed by laminating, for example, a Mylar sheet with a thickness of 1 bar so thin that it does not affect the image. Alternatively, the surface of the document table 3 may be directly coated with a material having a high friction coefficient, such as a To (indium oxide salt) film.

By forming such a layer 3a, even if the device vibrates and the document holding means vibrates against the document table, the document does not stick to the document table side due to the frictional force with the above-mentioned material layer. No misalignment will occur.

The transparent document table is not limited to glass, and any material that can be used as a document table, such as transparent plastic, can be used.

A Sheet document processing (sheet mode) (1) Rotate the paper output tray 6 to the left side of the document feeder M2 around the hinge part 6a (Figure 1) as shown by the solid line in Figures 1, 2, and 10. . With the document table 3 and the document feeder 2 located at the home position, the mode switching lever 38 is set to sheet mode 5 (elffi).As described above, the document feeder 2 is moved to the copying machine main body l side. The control circuit 1 indicates that the microswitch 46S, which is immovably locked (Fig. 3), has been turned on and switched to the seat mode.
Human power is sent to oo. The paper feed plunger 81 is in the off state, so the leaf spring 78 and the registration shutter 79 are in the first
The paper feed roller 77 is held in the first position shown by the solid line in FIG. in a state. The scooping plunger 87 is in the OFF state, and therefore the scooping sheet 85 is held in the position (2) shown by the solid line in FIG.

(2) Place the sheet original 0 (SN Fig. 2) to be copied on the paper feed tray 41- of the document feeder 2 with the image side facing C, and place the leading edge of the original on the paper feed tray 41- of the document feeder 2. 5
a until the leading edge of the original touches the registration shear 2 tough 9. This document insertion is done by sensor 83.
, and a signal indicating the presence of an original is input to the control circuit lOO.

(3) The number of copies, paper size, copy magnification, copy image density, and other copy conditions are set using the operation panel 93 of the copying machine main body l. These setting conditions are input to the control circuit 100. Then, the copy start button 93a is turned on.

(4) Forward drive a of the document table 3 is started. At the same time, the paper feed plunger 81 is turned on, the paper feed roller 77 pinches the leading edge of the document inserted into the paper feed sheet path 5a and is pressed against the paper feed roller 67, and the registration shutter 7
9 is released (second posture state shown by two-dot chain line in Figure 1O)
, the paper feed drive and the reroller 7 accompanying the forward movement a of the document table 3
5 transfers the friction plate 62-1-, its rotational force is transmitted to the paper feed roller 67, and the roller 67 begins to rotate in the document drawing direction. Due to the rotational force of the paper feed roller 67, the document is synchronously conveyed from the paper feed sheet path 5a to the surface of the document table 3 at the same speed as the forward movement speed of the document table 3, and the original is sequentially brought into close contact with the document table 3. The document is conveyed in the forward movement direction of the document table 3 together with the document table 3 without any slippage between it and the document table surface. 56, the original platen 3
It is further conveyed while being held down by the surface. In this way, as the document passes through the slit [tip section 8 together with the active document table 3, the downward image surface of the document is sequentially subjected to slit exposure processing from the leading edge of the document to the trailing edge, and the copying process of the document image is performed. This is executed by the copying mechanism inside the copying machine main body l.

As the document progresses with the forward movement a of the document table 3, when the trailing edge of the document passes the sensor 83 position, the sensor 83 detects the passage, and the signal is sent to the control circuit 100. is input.

Then, timer 1 starts from that signal point! ! 1st road is started. The timer circuit is connected to the timer circuit when the document is conveyed as the document table 3 continues to move forward from the time of the signal marked -I-, and the trailing edge of the document passes through the slit exposure section 8 and is transferred to the conveyance roller 56.
The timer time is set to the required conveyance time until reaching a position Q (FIG. 10, a position where the conveyance roller 56 is not completely removed) slightly before the conveyance roller 56. When the predetermined timer time elapses after the sensor 83 detects that the trailing edge of the document has passed the sensor 83 position,
The forward movement a of the document table 3 is stopped. Therefore, the document passes through the slit exposure section 8 stirrup in sequence from the front end to the rear end after the forward movement of the document table 3 starts and until the forward movement is stopped like two sets. Exposure processing is performed on the entire surface.

In other words, the document detecting sensor 83 and the timer described in -1- detect the length (length and size in the feeding direction) of the document sent from the document feeder M2 to the document table 3, and accordingly the document table 3
The forward movement length of is controlled in size. In other words, the forward movement of the document table 3 is controlled only by the necessary forward movement distance depending on the size of the document. Therefore, there is no wasted operation or wasted operation time of the document table 3, and the time for one document processing cycle is shortened.

The original document table 3 whose forward movement a has been stopped is then switched to the backward movement, and the exposed original document is also transported in the backward movement together with the backward movement document table 3 without being pressed by the conveying roller 56.

The number of copies preset here is 1 (single copy)
In this case, the scooping plunger 87 is turned on at the same time as the document table 3 starts to be driven back, and the scooping sheet 85 is turned on.
is converted and held in the second position shown by the two-dot chain line in FIG. As a result, the exposed original is deflected and guided by the scooping sheet 85 from the surface of the document table 3 into the discharge sheet path 89, and enters the sheet path 89 as the document table 3 moves backward a. The paper ejection roller 64 is rotationally driven in the paper ejection direction by the paper ejection drive and the relocation of the reroller 61 on the friction plate 62 as described above with the backward movement of the document table 3.1. L stack paper sheet pass 8
The exposed document 4 that has entered the interior of the document tray 61- is further conveyed by the rotating paper ejection roller 64, and is placed on the paper ejection tray 61- with the image side facing upward until the document table 3 returns to its initial home position. It is discharged. The document table 3 which has returned to the home position enters a standby state until the next document is placed and the copy start button 93a is pressed. When the document table 3 returns to the home position and waits, the paper feed plunger 81 is turned off, and the scooping plunger 87 is also turned off, causing the plate spring 78 (paper feed roller 77), φ registration shutter 79, and The scooping sheets 85 are each returned to the initial first position and held.

In addition, on the side of the copying machine main body, the copying cycle has been completed by the time the originals are ejected onto the output tray 6 as in the case of the second set, and the copies are placed in the copy tray 21 with the image side facing up. be discharged. That is, both the original document and its copy are discharged to the paper discharge tray 6 and the copy tray 21-, respectively, with the image surface facing upward.

Further, when the preset number of copies is a plurality of copies (multi-copy), the scooping plunger 87 is held in the off state even if the backward drive of the document table 3 is started. That is, the scooping sheet 85 continues to be held in the first attitude with its leading end separated from the document table 3. Therefore, in this case, when the document table 3 moves back, the document on the top surface of the document table 3 is also conveyed to the gap 31 between the document table 3 and the pressure-bonded sheet 30 of the document feeder 2, and the document presser roller 70 is pressed on the way. The document is pressed against the surface of the document table 3 and further conveyed together with the reciprocating document table 3. The document table 3 moves back to the initial home position and is stopped. Subsequently, the drive is again switched to forward drive a. Note that the distance between the conveying roller 56 and the document holding roller 70 is shorter than the minimum length of the original document on the document table 3-H, so during the backward movement process of the document table 3, at least one roller is always pressed against the document table. Even when the document table 3 returns to the home position, the leading edge of the document is at position R in FIG.
Since the document is pressed against the surface of the document table 3, the document does not slide and shift its position relative to the surface of the document table 3.

As the document table 3 is driven forward again a, the -1- document is also conveyed in the forward direction of the document together with the document table 3, passes sequentially through the slit exposure section 8, and is subjected to the second exposure process. done,
Copying processing for two sheets lI is executed on the copying machine main body l side. For the forward movement of the document table 3 after the second sheet ■, the movement length in the first copying process is stored in the control circuit 100, and the forward movement is performed by the forward movement length. Thereafter, by repeatedly reciprocating the original platen 3 for the set number of copies, the slit exposure of the original is repeated, and a plurality of copies are set on the copy tray 21-t, all of which are sequentially oriented in the image plane L-. is discharged.

Then, when the final action a of the original platen 3 is completed and the original platen 3 is then turned into a backward movement, the scooping plunger 87 is turned on at the same time, and from then on, the original is moved in the same manner as in the case of the single copy described above. is ejected onto the paper ejection tray 6'' with the image surface -L. The document table 3, which has finally returned to its home position, enters a standby state until the next document is set and the copy start button 93a is pressed. Also, the plate spring 7, the spring 78, and the registration shutter 79 are connected to the paper feed plunger 81.
When the scooping plunger 87 is turned off, the scooping sheet 85 is also returned to its initial first position and held.

FIG. 16 is a block diagram showing a circuit for performing the above-mentioned operation, and shows a well-known one-chip microcomputer (hereinafter referred to as MC0M) 100 with built-in ROM, RAM, etc.
The input boats P0 to P4 of MC0M100 include the copy start button 93a,
A home position sensor 101 that detects whether the document table 3 of the copying machine is at a predetermined position. Said sheet/thick document switching microswitch 46S/46B, document feeder 2
A signal from a document detection sensor 83 located inside is input.

Also, from the output port Fo=Fs, each driver D6
-D3 to turn on and off the forward drive mechanism 102 and backward drive mechanism 103 that drive the document table 3, which is a load, and the scoop plunger 87 and paper feed plunger 81 in the document feeder. An output signal is output.

Reading these input signals or turning on/off the load is done by M.
It is controlled according to a program stored in ROM in COMI 00. That is, when the switching lever 38 is set to sheet mode FS and the switch 46S is turned on (step 105 in FIG. 17A), the sheet original O(S) is inserted along the tray 4 from the paper feed slot 5 until the leading edge hits the shutter 79, and the light is emitted. The sensor 83 detects the presence of paper (step 106), and the start button 93a is turned on to start the sheet mode copying operation (step 107), which turns on the forward drive of the document table 3 and turns on the paper feed plunger 81 (shutter 79 opens) (17th B). Figure step 200).

Step 201 = [Forward timer] → start/end,
Document glass forward drive off.

Step 202 = [Setting number of copies] - 1 If NO, the scooping plunger 87 is turned off and the original platen back-drive drive is turned on.

Step 203 = Home position detection, backward drive OFF Step 204 = [Set number of copies] If -1 = 0, the scooping plunger 87 is turned on and the copying operation ends (END).

When copying a plurality of sheets at once, the scooping plunger 87 is inactivated (remains off) in step 202, and when the number of sheets to be copied is #0 in step 204, the process returns to step 200, and the operation is repeated until the number of sheets reaches O.

B. Thick Original Processing (Book Mode) (1) Fold the paper discharge tray 6 to 42 of the paper feed tray 4 as shown by the two-dot chain line in FIG. 1, and set the mode switching lever 38 to the book mode B position. As a result, as described above, the document feeder 2 is locked to the document table 3 side, and the document table 3 and the document feeder 2 become integrally capable of forward and backward movement.

Further, as shown in FIG. 6, the original pressing sheet 30 of the original feeding device 2 is brought into close contact with the upper surface of the original table 3. The fact that the microswitch 46B has been turned on and the book mode has been switched is input to the control circuit lOO. Paper feed plunger 81
and scooping plunger 87 are always kept off in this mode.

(2) Move the document feeder 2 to the shaft 4 as shown by the two-dot chain line in Figure 6.
Open and raise the document table 3 from one side with 5 in the center, and place the thick document 0 (B) to be copied at a predetermined position on the document table 3 side 1-1 with the image side to be copied facing downward. Then, as shown in FIG. 7, the opened holder M2 is placed over it as a document holder.

(3) Set various required copying conditions using the operation panel 93 of the copying machine main body 1, and then turn on the copy start button 93a.

(4) Then, the document table 3 will be placed on top of the thick document 0 (B
) and the document feeder are mounted, the forward movement a is started.

Due to the forward movement a of the document table 3, the downward image surface of the thick document set in the first position sequentially passes through the three-two exposure section 8 from the front end to the rear end, and is exposed to the image of the document. The copying process is executed by the copying mechanism within the copying machine main body 1.

For example, after the document table 3 has moved forward a distance corresponding to the size of the copy paper being used, it changes to the backward movement and returns to the initial home position.In the case of single copy 1, it then enters a standby state, and in the case of multi-copy, it returns to the initial home position. After the reciprocating drive is repeated for the number of days corresponding to the set number of copies, it enters a standby state.

[Brief explanation of the drawing]

The drawings show an apparatus according to an embodiment of the present invention, and FIG. 1 is an external perspective view, FIG. 2 is a longitudinal sectional front view including the main body of the copying machine, and FIG. 3 is a sectional view taken along the line m-■ in FIG. 1. Figure 4 is a cross-sectional view of the engaging protrusion and the engaging recess, Figure 5 is a cross-sectional view taken along line V-V in Figure 1, Figure 6 is the same view when converted to book mode, Figure 7 is the thick Figure 8 is a plan view of the mode switching lever mechanism, Figure 9 is an enlarged side view of the trouble spring part, and Figure 1O is an enlarged cross section of the sheet document conveyance φ discharge roller mechanism. Figure 11 is a cross-sectional view of the cross-cut line in Figure 10, Figure 12 is a cross-sectional view of the double line in Figure 10, Figure 13 is a rear view of the drive system, and Figure 14 is the manuscript. FIG. 15 is a sectional view of the scooping sheet portion, FIG. 16 is a block diagram of a control circuit, and FIGS. 17A and 17B are flowcharts thereof. 2 1 is the main unit, 2 is the document feeder, 3 is the reciprocating document table,
8 is a document reading position, and 38 is a sheet/book document feed switching lever. ? B 90-2562G5 (10) 11 Sho GO-256265 (11) 18 Kai Sho GO-2562 G5 (13 N

Claims (1)

[Claims] (1) Consists of a main unit that reads and processes documents, a document table that is placed on top of the main device and moves back and forth to transport documents to the reading position, and a document feeder that feeds thin documents toward the document table, The document feeding device is supported via a guide member that is movable only in a direction parallel to the reciprocating direction of the document table, and the document table and the document feeding device are configured to be movable independently with respect to the main body device. A document conveying device characterized by: