JPH0423778A - Device for neatly arranging sheet width in sheet carrying device - Google Patents

Abstract

PURPOSE:To improve copy productivity by providing a first sheet width regulating member which makes contact with a sheet width to regulate the width, and a second sheet width regulating member which has a sheet width regulating surface above the first member, is movable in the cross direction of the sheet, and makes contact with a carried sheet width to regulate the width. CONSTITUTION:When double copy mode is set, the size of a sheet is selected, and a copy button is pushed on, a first regulating plate 23A and a second regulating plates 24A are moved from home positions to preset positions according to the set sheet size. To the determined positions, they are pulse-driven by a pulse motor M from the home positions and moved through a gear system. At this time, a space (b) between the recessed parts 27A1, 27B1 of racks 27A, 27B and slide blocks 25A, 25B is determined so that the space of the regulating plate 24A is set in width narrower than (L+alpha), while the space of the regulating plate 23A is (L+alpha). After the above operation is terminated, the pulse motor M is driven so that the space of the regulating plate 24A is (L+alpha+beta).

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a conveying device for sheet-like paper used in image recording devices such as electrophotographic copying machines, printing devices, etc., and particularly relates to a conveying device for sheet-like paper used in image recording devices such as electrophotographic copying machines, printing devices, etc. A paper transport device that sequentially transports the sheets of paper into the top layer of a paper stack placed on a paper stack, and then takes out the bottom layer of the paper stack and feeds it to the processing name, e.g. is an automatic duplex recording mode that can record images on both sides of recording paper, an automatic multiplex recording mode that can form multiple images on one side of recording paper, or a recording paper circulation conveyance device. The present invention relates to an improvement in a circulation type automatic document feeder, etc., which circulates and feeds a document to be copied from a processing section to a document holder.

[Background of the invention]

Generally, in image recording devices such as electrophotographic copying machines, printing devices, and the like, various techniques have been proposed for automatic double-sided recording devices that can perform not only single-sided recording but also double-sided recording on recording paper.

In conventional automatic double-sided recording devices, after an image is recorded on one side of the paper in the image processing section, the paper is temporarily stocked in the middle, and then the paper is conveyed again and sent to the image forming section. , such an automatic paper circulation conveyance device is disclosed in Japanese Patent Application Laid-open No. 59-82247 and Japanese Patent Application Laid-open No. 59-11.
It is disclosed in various publications such as No. 4227 and Japanese Unexamined Patent Publication No. 60-2241.

Such an automatic duplex copying device changes the direction of recording paper (copy paper) that has been copied on one side in the transfer section, conveys it below the transfer section, stores it in a part of the stuffer, and sends out the paper again to move it upward. The paper is conveyed, the direction is changed, and the paper is supplied to the transfer section, and the other side of the paper is copied.

In the recording paper conveying device of the automatic duplex recording device as described above, the sheets must be aligned accurately before the sheets are sequentially fed and stacked on the intermediate tray and sent to the image forming section. . If the paper is re-fed and sent to the image forming unit with incorrect paper alignment, it may cause transport failure.
: When recording multiple images on the front side of the recording paper, there will be a positional shift between the first and second copied images, and when recording on both sides of the recording paper, there will be a misalignment between the front and back copied images. occurs.

In order to prevent the recording sheets from being misaligned, it is necessary to restrict both sides of the recording sheets carried and stacked on the intermediate tray to prevent misalignment, and to re-feed the sheets after accurately aligning them.

The left and right σ of the intermediate tray that regulates both sides of the recording paper mentioned above!
If the paper width regulating member is set at a fixed position for each paper width, the recording paper entering here will not be in a fixed direction and will hit the paper width regulating member, resulting in poor conveyance or paper failure. This results in paper irregularities such as curling up and skewing. In order to prevent this, if the guide interval of the paper width regulating member is widened, the paper alignment will become inconsistent.

In order to eliminate these drawbacks, one or both of the paper width regulating members can be made movable, and when paper enters the intermediate tray, the paper width regulating member is retracted to the outside to make it slightly wider, and the paper is moved to the intermediate tray. Once the paper is placed on the top, one or both of the paper width regulating members can be moved, and when the recording paper enters the intermediate tray, the paper width regulating plate is moved inward and the left and right sides of the paper are slightly compressed to align the paper. It is desirable to do so.

[Problem to be solved by the invention]

In the above-mentioned copying apparatus, after all the sheets of recording paper on which the first side has been recorded are ejected from the copying apparatus main body into the automatic paper reversing and conveying unit (ADU), the ADU is
The stack of recording sheets is aligned on the paper stacker, and after preparation for feeding is completed, paper feeding is started and the sheets are sent to the transfer section again to form a copy image on the second side of the recording sheet. was.

For this reason, it takes time to prepare for switching after copying the first side of the recording paper and before starting copying the second side, resulting in a decrease in copy productivity.

Therefore, while the recording paper on which the first side of the recording paper has been copied is sent from the transfer unit to the ADU, the recording paper on which the first side has been copied and which has been stacked in the ADU passes through the transfer unit and is transferred to the second side.
It is desirable to improve copy productivity by transporting the recording paper so as to start double-sided copying.

However, in order to re-feed the recording sheets while arranging them in the ADU stacker, it is necessary to
As disclosed in Publication No. 41, since the paper feed operation and paper alignment operation for refeeding cannot be performed at the same time, the paper interval for refeeding is adjusted so that these refeeding operations can be performed separately. controlled and changed. Therefore, it takes time to change the paper spacing, resulting in a reduction in copy productivity.

[Means to solve the problem]

The present invention is a paper alignment device that simplifies the control of the operation of stacking paper on the top layer of a stack of paper sheets on a stacker in a paper conveyance device and feeding the paper from the bottom layer, and improves productivity by eliminating waiting time. The purpose is to provide the following.

The paper width aligning device of the paper conveyance device according to the present invention achieves the above object, while sequentially carrying the sheet-shaped sheets discharged from the processing section to the top layer of the sheet stack placed on the sheet stacking table. The paper transport device that carries out the bottom layer of the paper stack and feeds it to the processing section is movable in the paper width direction that is almost perpendicular to the feeding direction of the various sizes of paper stacked on the paper stacking table. a first sheet width regulating member that is driven to contact the paper width to regulate the width; and a paper width regulating surface above the first paper width regulating member; It can be moved in the width direction of the paper being carried above.
The present invention is characterized in that it includes a second paper width regulating member that contacts and regulates the width of the carried paper.

Further, the paper width aligning device according to the present invention is characterized in that the second paper width regulating member has a movement range in which it can operate independently of movement of the first paper width regulating member.

Furthermore, the paper width alignment device according to the present invention is provided with a sensor for detecting passage of the paper on the upstream side of the paper loading table in the paper transport direction, and the second paper width regulation is performed by detecting passage of the trailing edge of the paper by the sensor. It is characterized by controlling the members to be movable.

Furthermore, in the paper width aligning device according to the present invention, the guide surface interval of the second paper width regulating member is set to be wider than the paper width before the paper is fed onto the paper loading table, and the paper width is adjusted by the sensor. After the trailing edge is detected, the second sheet width regulating member is drive-controlled so that the guide surface interval is smaller than the sheet width.

〔Example〕

Hereinafter, embodiments according to the second invention will be described in detail with reference to the accompanying drawings.

FIG. 1i) is an overall configuration diagram of an image recording apparatus (for example, an electrophotographic copying machine) according to the present invention. In the figure, the copying machine main body 100 includes a scanning exposure section A, an image forming section B, a recording paper supply section C1, a paper feeding section D, a transport section E, a fixing section F, a paper ejection section G,
Paper output tray H1 Automatic double-sided recording paper reversal conveyance device (
ADU) J, (•) In the figure, the dashed-dotted line indicates the conveyance path of the recording paper P.

Furthermore, on the top surface of the copying machine main body 100, there is an automatic document folding I.
: A functional automatic document feeder (RADF) K is installed.

The conveyance process of copy paper P will be explained with reference to FIG.

By the operation of the automatic document feeder (RADF) K, the original is sent to the original platen glass (platen exposure section) of the copying machine main body 100 and stopped, and then the original image is exposed by the scanning exposure section A. A copy image is formed by B. At the same time, the recording paper P sent out from the recording paper supply section C is transferred to the transfer section of the image forming section B, where the copy image is transferred and fixed at the fixing section F, and then to the paper ejection section. By the switching means G, the sheets are loaded on the sheet loading table (stamecha) of the sheet reversing conveyance unit (ADU) J for backside recording via the star/carrying introduction section.

FIG. 9 is a sectional view of the reversing conveyance unit (ADU) J. The reversing conveyance device J is composed of a recording paper introducing means 10, an intermediate tray unit 20, and a paper refeeding means 30.

The recording paper introduction means 10 includes transport rollers 11.12,
Kite board 13. Elastic wire for recording paper guide +4.15
, a leading edge paper aligning roller 16, a recording paper trailing edge passage detection sensor F' S l , and a drive mechanism (not shown). The conveyance rollers 11 and 12 consist of lower drive rollers IIA and +2A connected to a drive source, and upper driven rollers 11A and 12A that are in pressure contact with the drive rollers and rotate as a result.

The elastic wires 14 and 15 prevent the recording paper P advanced onto the intermediate tray main body 21 from curling upward and overcoming a movable damper 22, which will be described later.

The leading edge paper aligning roller 16 is rotated by gear connection to a swing shaft 17 connected to a drive source (not shown), and is rotated by a movable swing 1. It is supported by the arm 18 and swings. The roller 16 presses and rotates the recording paper P conveyed onto the intermediate tray main body 21.
It abuts against the movable stopper 22.

The intermediate tray unit 20 includes a tray body 21, a movable stopper 22, first paper width regulating members 23A and 23B, and a second
The paper width regulating member 24A, 24B, and a drive mechanism.

The movable stopper 22 is moved by a driving means (not shown) in accordance with the size of the recording paper P to be conveyed, and stops at a predetermined position to align the paper in the traveling direction.

FIG. 1 is an external perspective view of the intermediate tray unit 20, FIG. 2 is a partially cutaway perspective view of the intermediate tray unit, FIG. 3 is a perspective view of the unit as seen from the bottom side, and FIG. 4 is a plan view of the unit. , FIG. 5 is a side sectional view, FIG. 6 is a partial detailed sectional view, FIG. 7 is a partial perspective view, and FIG. 8 is an exploded perspective view.

One first paper width regulating member 23A is composed of a plurality of upright surface portions (two in the figure) 23Al, 23Al, and a bottom sliding plate portion 23A2 integral with these. The sliding plate ffi 23A2 is screwed onto the upper surface of the sliding block 25A. The slide block 25A is fitted into a recess 27A1 of a rack (linear gear) 27A, is movable along its inner wall 21Al, and is biased by a spring 26A in a direction perpendicular to the moving direction of the rack 25A. has been done. As shown in FIGS. 6 and 7, the spring 26A is connected to one inner wall 21AI of the long groove portion 21A of the intermediate tray main body 21 and the slide block 2.
5A, and applies a sliding resistance force (braking force) to the slide block 25A when the rank 27A moves.

The rank 27A is linearly driven by rotation of a pinion gear Gl attached to a DC reversible pulse motor M and two-stage gears G 2 and G 3 that mesh with the pinion gear Gl,
It linearly reciprocates along the long groove portion 21A of the intermediate tray main body 21.

The other first sheet width regulating member 23B is formed symmetrically with the above-mentioned one regulating member 23A, and similarly to the above, the regulating member 2 is moved along the long groove portion 21B by the rack 27B.
It reciprocates linearly symmetrically with 3B. 25B is fitted into the recess 27B1 of the rank 27B, and the spring 26B1 is inserted into the recess 27B1 of the rank 27B.
Two biased slide blocks perform the same function as 25A. The slide block 25A.

The moving direction length of 25B is the concave portion 27A I of racks 27A and 27B.

27B1, respectively, to form a gap.

6th [! 18 and as shown in FIG.
The convex portions 27A2 on both sides of the concave portion 27A1 at 7^ above 211Pfr have both side end surfaces aligned with the long groove portions 2+A.
lj: Can be inserted and slid, and the bottom plate portion 24A3 of the second sheet width regulating member 24A is fixed to the upper surface thereof with screws.

The second paper width regulating member 24A includes a plurality of upright surface portions (two portions in the figure) 24AI, 24AI, and an inclined surface portion 24A2.
．． 24A2 and the bottom plate portion 24A3 are integrally formed. The upper ends of the upright surface portion 24A1 and the inclined surface portion 24A2 are connected to the upright surface portion 2 of the first sheet width regulating member 23A.
It is set at a higher position above 3A1.

Similarly, the other rack 27B is also formed opposite to the rack 27A, and is integrated with the second paper width regulating member 24B.

As shown in FIG. 3, a home position detection plate 2B is fixed to a part of the lower surface of the ridge 27B. On the other hand, a position sensor PS2 is attached to a holding plate l2 (not shown) which is integral with the lower surface of the intermediate tray main body 21. The position sensor PS2 is, for example, a translucent optical coupling element (photointerrupter) that combines a light emitting diode and a phototransistor. The position sensor PS2
The home position/reverse detection plate 23 is placed in the photodetection recess so that it can pass through without contact, and the switch is turned on and off when the detection plate 28 crosses it.

Here, the detection plate 28 is arranged at such a position that the position sensor PS3 is always turned off when the size is below the A4 size, and turned on when the size exceeds the A4 size.

Next, the operation of the paper width aligning device of the paper reversing conveyance device according to the present invention will be described.

(1) First, the home position setting operation will be explained.

When the CPU issues a command to stop the paper width regulating member of the intermediate tray unit 20 at the home position, ■When the position sensor PS2 is turned on (when installed for A4 size or larger), the above command is executed. The pulse motor M is driven by the second paper width regulating member (hereinafter, the second paper width regulating member).
The racks 27A and 27B are operated inward so that the interval between the racks 24A and 24B becomes narrower, and when the position sensor PS2 detects passage of the home position setting position, the racks 27A and 27B are turned off and stopped.

At this time, the first paper width regulating member (hereinafter referred to as the first regulating plate) is a slide pro that is integrated with 23A and 23B.
5A and 25B are concave portions 27Al and 27B of the racks 27^ and 27B that are integrated with the second regulating plates 24A and 24B.
1, the second regulating plates 24A, 24
The first regulating plates 23A and 23B move together with the first regulating plates 23A and 23B.
It stops at a position where the distance between the upright surfaces 23A1 and 23B1 is L, (equivalent to 4-size paper) 1σ. At this time, each upright surface portion 24A1.2 of the second regulating plate 24A, 24B
The interval of 4BI is narrower than the above (L.+σ) (for example,

(approximately equal to).

Reference] ■When the position sensor PS2 is off (when installed on A4 size or smaller), the pulse motor M is driven by the above command, and the second regulating plate 24A24B is spread outward to move the rack 27A, 27B is activated.

Then, the position sensor PS detects the passing of the home position setting position.
2 is detected and turned on, widen it by a certain amount Z f-(
After that (overrun), it is reversed again and moves in a direction to narrow the distance between the two regulating plates, and is stopped when it reaches the home position where the detection plate 28 crosses the position sensor PS2. During this interval widening operation, the slide blocks 25A, 25B, which are integrated with the first regulating plates 23A, 23B,
Fig. 5(A)
The distance between the upright surfaces 23A1.
The distance between the upright surfaces 24A1 and 24B1 of 4B is even narrower. Therefore, as in the above operation, after expanding the gap by more than the gap, the second regulating plates 24A and 24B are closed (see Fig. 5).
B) By turning off the position sensor PS2 at the home position, the vertical distance between the first regulating plates 23^ and 23B becomes L.
It becomes 0+a. Here, the second regulating plate 24A.

The constant overrun amount 2 during expansion of 24B is set to be equal to or larger than the above interval.

By performing the above operations (2) and (2), the first regulating plate 23A.

23B can be accurately stopped at the home position.

Here, we set the home position to the A4 size width because A4 size paper is the size that is generally copied the most, and the maximum size (A3 size) and minimum size (85 size) of the paper to be recorded. ) is advantageous in that the time required to move the width regulating plate to each size can be reduced. However, depending on the case, the home position may be changed to the maximum size, minimum size, or other size.

(ii) Paper size setting operation■Double-sided copy mode is set and paper (transfer paper) P is 1
is selected and the copy button is turned on.
The regulation plates 23A, 23B and the second regulation plates 24A, 24B are
The paper moves from the home bomb to a predetermined position according to the set paper size.

To reach this predetermined position, the paper is moved from the home position through a gear system by driving pulses with the pulse motor M. At this time, as mentioned above, the direction in which the interval between the paper width regulating plates is narrowed is Move in one direction for the number of pulses and then stop. As explained in (1) above, the direction in which the gap between the paper width regulating plates is widened is to overrun by a certain amount 2 to widen it, then reverse it to narrow the gap, and then stop at the set paper size position. . At this time, each paper width regulating plate is set to the first regulating plate 23A as shown in FIG. 6(B).
, 23B is (L↓a), while the width of the second regulating plates 24A, 24B is set at a narrower position than (L + α). 2
The gaps between 7A1 and 27B1 and the slide blocks 25A and 25B are determined. The above interval difference σ is generally 0
~61WI11. For example, in the case of A4 size paper, the paper width is 297mm, and (L+a) is 299mm.
(a-2mm).

(2) After the above operation is completed, the pulse motor M is driven so that the distance between the second regulating plates 24A, 24B becomes (L+a+β), and the second regulating plates 24A, 24B are expanded outward.

At this time, the tea 2 regulating plates 24A and 24B are arranged at a distance of (L+σ
+β), the first regulating plates 23A, 23B
The recesses 2 of the racks 27A and 27B should be
7A Determine the gap formed in I27B1. Here, the second regulating plates 24A, 24B are the first regulating plates 23A, 2
This means that it is possible to move from the interval shown in Figure 6 (B) to the interval (L + σ + β) shown in Figure 6 (A) while maintaining the interval (L + σ) of 3B and stopping. .

The above-mentioned interval difference β is set to -2 to 10 mm1 for boat fishing.

For example, in the case of the above-mentioned A4 size paper, the paper width is 29
This second regulating plate 24A2 set (L ± σ + β) to 305 m1 for 7 mm (α-2 mm, β-6 mm).
The standby operation is completed by setting the interval of 4B to (L + σ + β).

(iii) Alignment operation When a sheet of paper width W is discharged by the conveyance roller 12 shown in FIG. , the detection sensor PS2 detects whether the trailing edge of the paper has passed. Then, after a certain period of time has passed based on when the trailing edge of the paper passes,
And, before the next sheet is ejected, the second regulating plates 24A and 24B are pressed at least once as shown in FIG. 6(B).
After adjusting the paper width by reducing the width at the spacing shown in J, continue to adjust the spacing (L + σ) shown in Figure 6 (A'').
+β) and enters a standby state. Said second regulation plate 24A
, 24B, one sheet of paper discharged from the conveyance roller 12 is moved to the inclined surface portion 24A2 of the second regulating plate 24A, 24B located above the first regulating plate 23A, 23B.
, 24B2, and further upright surface portions 24A1.
24Bl, the width of the paper is aligned to a predetermined position, and the second regulating plates 24A, 24B subsequently widen the gap and move to retreat, causing the paper to fall downward and first regulating plates 23A, 23.
B's upright surface portion 23Al.

It is placed within the 23B10 interval (L+σ).

The interval reduction/enlargement operation by the second regulating plates 24A, 24B is performed for each sheet of paper discharged from the conveyance roller 12 and sent to the intermediate tray unit 20, and aligned.
Repeat this.

For paper that has undergone the above paper alignment operation at least once,
They are stacked with their widths regulated between the first regulating plates 23A and 23B.

(iv) Feed Ratio Operation When the paper alignment operation described in (ii) above is completed, a refeed ready signal from the reversing conveyance device it (ADU) J is output to the copying machine main body 100.

Upon generation of the ready signal, the paper refeeding means 3 shown in FIG.
0 or start is possible.

The paper refeeding means 30 is provided near the left end of the intermediate tray unit 20, and includes a feeding section, a friction separation paper feeding section, a second paper feeding section,
It is composed of a reversing conveyance means, and bottom-feeds the recording sheets P stored and stacked on the intermediate tray unit 20 by switch-banking them in a direction opposite to the carrying direction.

The feeding section includes a pickup roller 3 that can rotate in one direction.
1 and the tip of the recording paper P on the pink up roller 31 @
(left end) with a predetermined pressure.

The friction separation paper feeding section is composed of a feed roller 33 driven in a fixed position, and a reverse roller 34 that is in pressure contact with the feed roller 33 and has a one-way crank or a built-in torque limiter.

After single-sided copying is completed, when the double-sided copy button is operated, the pressing lever 32 swings and descends to press the recording paper P stacked on the pickup roller 31.

Next, the bi/quaso roller 3I is driven and rotated, and the recording paper P is sent out in the direction of the arrow by the pressure lever 32 and the pinch pressure, and the leading end of the recording paper P is sent to the nip position between the feed roller 33 and the reverse roller 34. In this two/pu position,
Multi-sheet feeding prevention effect by the foot roller 33 that rotates and the reverse roller 34 that is driven and pressurized in the opposite direction to the traveling direction of the recording paper P via a torque limiter! From here,
Only the bottommost sheet of recording paper is sent out in the direction of the arrow.

At this time, it was sent to the bottom. Recording paper is @I regulation board 23
A and 23B are always regulated by the interval (L + α), and during this bottom feed operation, the second regulation plates 24A and 24B located above it or the width direction by the above-mentioned paper alignment operation (ii) There is no problem even if you move the paper stack, feed the handle to the top layer of the paper stack, and perform width alignment, and it is possible to simultaneously align the width of the upper paper that has been fed in and feed the bottom paper at the same time. It is.

The second paper feeding means includes a drive roller 35 and a drive roller 35.
It is composed of a driven roller 36 that rotates under pressure contact with the recording paper leading edge detection sensor PS3, and conveys the recording paper sent out from the friction separation paper feed section to the lower intermediate conveyance roller pair 38A via the guide plate 37.

On the downstream side of the intermediate tray unit 20 in the conveyance direction, there are a plurality of pairs of intermediate conveyance rollers 38A that can be driven and rotated.

38B, 38C1, a reversing conveyance means consisting of a lower conveyance guide plate 39A and a curved guide plate 39B is provided. (See Figure 10) The recording paper fed downward from the second paper feeding means is
It is conveyed in the horizontal direction while being held by the conveyance rollers 38A, enters along the gap between the guide plates 39A, and then enters the intermediate conveyance roller 3
8B, passes through the curved guide plate 39B, and is carried out from the reversing conveyance unit (ADU) J by the intermediate conveyance roller 38C near the upper exit.

The recording paper P carried out from the reversing conveyance device J passes through intermediate conveyance rollers 41, 42 and registration rollers 43, and after an image is formed on the back side of the recording paper P, the conveyance direction is changed or the paper discharge section G is set to eject the paper. The paper is ejected onto the paper ejection tray H via the
It will be placed. Subsequently, the upper recording sheets in the intermediate tray main body 21 are also sequentially fed forward, pass through the conveyance path, and are stacked on the sheet discharge tray H.

The double-sided recording paper reversing conveyance device J is formed into a unit, and slide rail members 1 are provided on both sides of the unit housing 1010.
02.102 is provided, and the bow can be extended from the copying machine main body 100.

〔Effect of the invention〕

As described above, the paper width alignment device of the paper feeder according to the present invention has a stacker unit that refeeds paper that has been once docked to a tray unit that can load a stack of paper.
The paper to be fed into the tray and stacked is easily introduced with the upper second paper width regulating member slightly open, and then width alignment is performed by reducing the interval between the regulating members. When the sheets are lowered and further placed stationary on the l-lay surface, the first sheet width regulating member located below at a distance approximately equal to the sheet width ensures that the sheets are aligned and that they remain in this state until just before re-feeding. maintained. Therefore, it is possible to simultaneously align the widths of the upper sheets that have not been fed onto the tray and feed them from the bottom, thereby eliminating waiting time and improving copy productivity.

Furthermore, since the paper on the tray is accurately positioned, images can be formed on both sides in the correct position.

Furthermore, it is possible to refeed and feed the paper reliably and accurately without problems such as poor paper transport (jamming), meandering, folding of the leading edge, or slippage, and stable paper refeeding is possible even during high-speed double-sided copying. became.

[Brief explanation of the drawing]

The first section is an external perspective view of the intermediate tray unit according to the present invention, FIG. 2 is a partially cutaway perspective view of the unit, the third section is a perspective view of the unit as seen from the bottom side, and FIG. Plan view of the unit, FIG. 5 is a side sectional view of the unit, FIG. 6 is a partial detailed sectional view, FIG. 7 is a partial perspective view, FIG. 8 is an exploded perspective view thereof, and FIG. 9 is paper reversal conveyance. A sectional view of the apparatus, FIG. 10, is an overall configuration diagram of an image recording apparatus according to the present invention. IO... Recording paper introduction means +1. ! 2... Conveyance roller 20... Intermediate tray unit 21 - Intermediate tray main body 23A, 23B... First paper width regulating member (first
Regulation plate) 23A1...Upright surface portions 24A, 24B...Second paper width regulating member (second regulation plate) 24A1/Upright surface portion 24A2...Slanted surface portion 2
5A, 25B...Slide blocks 26A, 26
B...Spring 27A 27B...Rack 28
・Ohm position detection plate 30 ・Paper refeeding means ) 00 ・Paper reversing conveyance unit (ADU) of the copying machine body L, , L ・Interval M ・Pulse motor PSl
・Recording paper trailing edge passage detection sensor PS2...Position sensor
b... Gap

Claims (4)

[Claims] (1) While sequentially transporting the sheet-like paper discharged from the processing section to the top layer of the paper stack placed on the paper loading table,
The paper transport device that carries out the bottom layer of the paper stack and feeds it to the processing section is movable in the paper width direction that is almost perpendicular to the feeding direction of the various sizes of paper stacked on the paper stacking table. a first paper width regulating member that is driven by the paper width and contacts the paper width to regulate the width; and a paper width regulating surface is provided above the first paper width regulating member, and the paper bundle is ejected from the processing section. A paper width alignment device for a paper transport device, comprising a second paper width regulating member that is movable in the width direction of the paper carried above and contacts the width of the carried paper to regulate the width. (2) The paper conveying device according to claim 1, wherein the second paper width regulating member has a movement range that is movable independently of movement of the first paper width regulating member. Paper width alignment device. (3) A sensor for detecting the passage of paper is provided on the upstream side of the paper mounting table in the paper transport direction, and the second paper width regulating member is movably controlled by the sensor detecting passage of the trailing edge of the paper. A paper width alignment device for a paper transport device according to claim 1 or 2, characterized in that: (4) The guide surface interval of the second paper width regulating member is set to be wider than the paper width before the paper is fed onto the paper loading table, and after the trailing edge of the paper is detected by the sensor, 4. The sheet width alignment device for a sheet conveying device according to claim 1, wherein the second sheet width regulating member is drive-controlled so that the guide surface interval is smaller than the sheet width.