JPS5979261A - Manual paper feeding device in copying machine - Google Patents

Abstract

PURPOSE:To set exactly and automatically a placing position of manual feeding copying paper by providing a carrying means for feeding the manual feeding copying paper into the same position as the regular time. CONSTITUTION:A manual feeding plate 21 is installed to an installing part 3 of a copying machine body 2 and plugs 33, 34 are connected. Manual feeding optional size single leaf copying paper 38 is placed on a placing face 21d, is fed a little by a finger, etc., a deflection is formed a little by pressing its tip against a contact part of a feed roll 23 and a driven roll 25, a sensor lever 22 is depressed by the tip edge part, and a sensor 22 is operated. By the sensor detection 22, a motor 28 is driven, and the paper 38 which is made to conform with the reference line is fed onto a feeding path face 21e by the rolls 23, 25. Subsequently, the manual feeding paper 38 is fed in so that a rotation of this motor 28 becomes almost the same as the tip position of copying paper in a cassette in case when a regular cassette is used.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention provides a method for manually feeding single sheet copy paper of any size in a copying machine that automatically feeds paper using a manual paper feeder in a copying machine, and more specifically, a paper feed cassette. The present invention relates to a manual paper feeder i1 for paper feeding.

As is well known, in a cassette copying machine that uses a paper feed cassette, in addition to normal automatic paper feeding using a paper feed cassette that stores a large number of single-sized copy sheets, it is also possible to copy single sheets of any size (( (Feed paper manually, Qr i
Interrupt copying may be performed by feeding paper other than continuous automatic feeding from a paper cassette, which is called LV manual feeding.

When performing manual paper feeding on a cassette copying machine, copy paper of any size is manually inserted into the copying machine from the paper feed cassette installation part of the copying machine. The leading edge of the copy paper must be placed at the same position as the leading edge of the copy paper in the cassette when a normal paper feed cassette is used. This means that, like the copy paper in the cassette, manually fed copy paper is fed toward the copy position inside the copy machine by a paper feed roller that is driven in response to a paper feed signal issued by pressing the copy operation button. This is to ensure that the leading edge of the manually fed copy paper is directly below the paper feed roller and must be inserted in a position where the turning roller will come into contact with the paper feed roller when it is driven and lowered. It is.

However, since the leading edge of the copy paper is located inside the copying machine, it cannot be visually confirmed from the outside.

Therefore, in the past, a plate or stand (hereinafter referred to as manual feed stand) was used to place the copy paper for manual feeding, and the rear end of the copy paper was inserted into the manual feed stand (aligning it with the IJ digit mark). Operations were common.

Next, to explain the conventional manual feed stand in more detail with reference to FIGS. 1.2, as is well known, the cassette copying machine 1 has the following features:
61 below one side 2a of the copying machine main body 2! A paper feeding unit 3 is provided, and a paper feeding cassette 4 is detachably mounted to the paper feeding cassette mounting unit 3. The upper surface of the copying machine main body 2 is a transparent document placement surface 2b (see FIG. 2), and the document placement surface is suppressed by a document cover 5. As shown in FIG. 2, a photosensitive drum 6 is disposed in the copying machine main body 2 below the document placement surface 2b. A static latent image of the original M placed on the placement surface 2b is formed. Around the upper Me photosensitive drum 6, a developing device 7, a transfer corona discharger 8, a stripping corona discharger 9, etc. are sequentially arranged along the rotational direction of the photosensitive drum 6 as indicated by arrow A. has been done.

On the other hand, in the paper feed cassette 4, a large number of copy papers 10 cut into standard paper sizes are stacked and stored on a push-up plate 11, and are pushed up by a spring 12 at the tip of the push-up plate 11. As a result, the leading edge of the stacked copy sheets 10 is pushed upward. This pushed up copy paper 10
Both corner portions of the uppermost copy paper abut against the separation claws 13, and are regulated so that the contact position with the paper feed roller 14 is at a constant height.

Further, an opening 4a for sending out central paper is provided near the tip of the top surface of the paper feed cassette 4, and the paper feed roller 14
descends into this opening 4a and comes into contact with the uppermost copy sheet,
The VX is designed to feed this into the copying machine.

The paper feed roller 14 is rotatably attached to the optical width 1flf of the swing arm 15, and is normally located above the opening 11a. Then, when a paper feed signal is issued by pressing the copy operation button of the copying machine, the swing arm 15 moves downward in response to this, and the rotating paper feed roller 14 opens LI ITI! Enter 4a,
The uppermost copy paper is brought into contact with the white paper and sent out to the outside of the cassette 4. The fed copy paper is transferred to a synchronizing registration roller lea, 16 consisting of a pair of upper and lower feeding rollers.
．． The photosensitive drum 6 and the transfer corona discharger 8 are connected by b.
It will be sent between. Here, the image of the document f which has been toner-developed by the developing device 7 is transferred onto copy paper by a transfer corona discharger 8, and the copy paper onto which the original pail image has been transferred is transferred to a drum 6 by a peeling corona discharger 9. A pair of upper and lower heat fixing rollers 17a are peeled off from the rollers 17a.

171). The fixed copy paper is sent out onto a paper discharge tray 1B attached to the lower part of the other side surface 2C of the copying machine main body 2.

Cassette like this)? J1 photo machine 1 is configured,
As shown in FIGS. 1 and 2, the manual feed table 20 is mounted on the paper feed cassette 4 through the opening 1 of the cassette mounting section 3. This manual feed stand 20 is formed of a single flat plate, and on top of it [111] there is a reference F mark 20a for aligning the horizontal position of the copy paper to be manually fed, and a paper trailing edge mark for aligning the rear edge of the copy paper. 2011°20C etc. are provided. Conventional manual feed stand 20 configured in this way
According to the above, it is sufficient to manually load the copy paper to be manually fed onto the manual feed stand 20, with its reference heddle 20a and mark 20b or 20CK clear (111). Since the leading edge of the copy paper enters the copying machine body and is not visible from the outside, it is unclear whether the leading edge is accurately positioned below the paper feed roller 6.

Normally, manual paper feeding often uses non-standard sized paper, so the paper trailing edge marks 20b, 20
cR'> can only be used as a rough guide, and as a result, the leading edge of the completed copies was often misaligned. That is,
Registration rollers 16a and 16 that synchronize with the original image
There was a misalignment of the tip that could not be covered with b.

An object of the present invention is to provide a manual paper feed device for a copying machine that eliminates the drawbacks of the conventional manual feed stand and can easily and automatically set the placement position 1i'j of manual copy paper. It is in.

According to the present invention, by simply inserting manually fed copy paper of any size into the manual paper feeder, the motor automatically feeds it to a predetermined position accurately. It is very convenient as there is no need to rely on the mark or send it manually.

In addition, conventionally, the leading edge of standard-sized paper could be aligned by using marks attached to the manual feed tray, but paper larger than standard size with a binding margin at the rear edge of the paper, Alternatively, it was very difficult to align the edges of paper of a special size, but with the manual paper feeder of the present invention, it is possible to
First, these problems are solved all at once.

In addition, the feed roller part of the conveyance means in the present invention is covered to prevent dust from accumulating on the feed roller part, but if part of this cover is made transparent or translucent, the leading edge of the inserted paper can be removed. Since you can check whether the roller is set in the roller position, you can feel more secure.

Furthermore, the placement reference line on the top surface of the manual feed tray in the present invention can be raised a little higher, and in this way, the manual feed paper can be pressed against it, making it easier to set it. Ru.

The present invention will be explained below with reference to illustrated embodiments.

FIG. 3 is a perspective view of a manual paper feeder showing a first embodiment of the present invention.

The manual paper feed device of the present invention includes a manual feed stand on which single-sheet copy paper of any size for manual feeding is placed, and the single-sheet copy paper placed on the manual feed stand is automatically delivered to a predetermined paper feed position within the copying machine. It mainly consists of (1゛q).

Manual feed stand 21 in the first embodiment of the present invention shown in FIG.
The paper feed cassette 4 (see Figures 1 and 2) is constructed in the form of a closed box with a rectangular shape and the same size as that of the regular paper feed cassette 4 (see Figures 1 and 2). The paper feed cassette mounting portion 3 of the copying machine main body 2 is removably attached to the paper feed cassette 40 in place of the paper feed cassette 5.
1 has a paper detection sensor 2 inside, as shown in Figures 3-4.
2. It is formed by a lower part 111 body 21b into which the feeding roller 23 and its dynamic system are installed, and an upper half-plate-shaped closing body 21a with a curved upper surface opening of this box body 21b. A bridge-shaped cover 2IC extending at one angle with respect to the longitudinal direction of the manual feed tray 21 is integrally provided with the closing lid body 21a in the front chamber from the middle of the upper surface of the fi1 body 21a. The part of the upper surface of the closed body old a that is in front of the cover 2IC (the left part in Figs. 3 and 4) serves as a loading surface 21d for manual copying paper, and also covers the cover 2IC.
The rear part (the right part in FIGS. 3 and 4) is the feeding path surface 21e for manual copy paper, and the cover 21C
The lower portions of the front and rear walls of the paper have notches 21f and 21g, respectively, which form paper feeding paths. A driven roller 25 is rotatably supported horizontally within the cover 21C by a support shaft 24. This driven roller 25 is made of rubber or metal, and is
It is supported so that it comes into light pressure contact with the top surface of. Also, the inner diameter of this driven roller 25 is supported! It is slightly larger than the outer diameter of 1II24, and is always in contact with the feeding roller 23.
However, when copy paper is inserted, it is lifted by the thickness of the paper, making it possible to handle both thick and thin paper. [There is.

Further, an upper surface portion of the feeding roller 23 slightly protrudes from a portion of the closing lid 21a below the driven roller 25.
A window hole 2111 is formed to allow the star to shine on the outside.
The driven roller 25 comes into contact with the upper surface of the feeding row 223 protruding from inside the window hole 21h.

On the other hand, the feeding row 22 constituting the conveying means in the present invention
3, its drive system, and the paper detection sensor 22 are connected to the fourth
, 5, it is housed in the lower box body 211). That is, the feeding row 223 made of a material such as rubber having a relatively large thread count is connected to a pair of mounting ears 21 that are integrally formed upright on the bottom plate 21k of the box body 21b.
j, 21j, its supporting shaft 23a is 1111'i<
It is rotatably supported via 26a and 25b and suspended horizontally within the box body 21b. And the above-mentioned support shaft 23,
A gear wheel 27 for a micro pitch belt is fixed near the -l1llIl>iia portion of l. Further, on the bottom plate 21 near the upper six-wheel feed roller 23, a single-movement motor 28 is arranged so that its output shaft 28a is parallel to the support shaft 23a, so that JI+1! The part of the output shaft 28a of the motor 28 corresponding to the gear wheel 27 is connected to a micro pitch belt via a one-sided clutch 30 using sword-like rollers. The gear wheel 31 of the motor 28 is set aside, and a micro pitch belt 32 is looped around both gear wheels 27 and 31 once.Therefore, the 11., !1 ! The one-way clutch 30 is configured to transmit the power to the roller 23.
When the motor 28 rotates in the 11 direction in FIG. 4, the rotational driving force is transmitted to the feeding roller 23,
3 is rotated in the 11 direction at the time of disengagement, and when the motor 2B rotates in the reverse direction in the direction i1 at the time of disengaging, the motor 2B idles. Therefore, the feeding roller 23 can be controlled clockwise as desired. Further, the one-way clutch 30 may use a spring, and it goes without saying that the micro pitch belt 32 may also be replaced by a chain or a gear train.

On the front wall 21J- of the box body 21b, a plug 33 for connecting a power source to the air control circuit v13 (not shown) including the motor 28 is provided. Load the cassette into the copy machine body 2! When attached to the camera 3, the plug 33 is fitted into the Kamei connector 34 provided on the back wall 19 of the subject 1, as shown in FIG. , a compliment is provided.

Returning again to FIGS. 4 and 5, the feed row 22 inside the box body 2Ib
Near the front of 3 is the front HQ river detection sensor 22.
II)

This detection sensor 22 is a micro switch (h), and its actuator forms a sensor lever 22a. , and the half of the paper protrudes above the insertion path of the manual copy paper.When the manual copy paper is inserted between the feed roller 23 and the first drive roller 25, the paper is inserted into the feed roller 23 and the first drive roller 25, as shown in FIG. As shown in FIG.
b (5th medical examination 11a), the microswitch is closed, the sensor 22 detects that the manual paper has been inserted, and the motor is activated in the electric control circuit. It is designed to emit a 1/r signal.

In addition, the closed body 21a that constitutes the manual feed tray 21 in this way
1 box body 21b, mounting ears 21i, 21j and cover 2
1c is entirely formed by molding a synthetic resin material, and in particular, the cover 21c is transparent or semi-transparent as shown in FIG.

In this way, the driven roller 25 and the feeding roller 23 can be seen from the outside, so that the remarkable effect that the state in which the manually fed paper is inserted between the two rollers 23, 25 can be confirmed from the outside can be obtained.

Moreover, −ji of the mounting surface 21d on the upper surface of the closing lid 21R is
On the ll side, a line is attached to the placement base A of the manual paper, but in the present invention, as shown in FIG. Since it is formed of a paper sheet, it is only necessary to place the manual paper against it, and it has the advantage that it is very easy to place the sheet.

Next, to describe the operation of the manual paper feeder of the present invention configured as described above, first, the manual paper feeder 21 is connected to the sixth paper feeder.
As shown in the figure, it is attached to the cassette attachment part 3 of the photoiso body 2. Then, since the plug 33 is connected to the outlet 34, power is supplied to the manual paper feeder. Next,
As shown in FIG. 4, a manual copy sheet 3B of any size is placed on the +1/■ same side 21d. Thereafter, the sheet of paper 38 is fed a little with a finger or the like, and its tip is brought into contact with the contact portion between the feeding roller 23 and the driven roller 25, so that a slight deflection is formed. Then, the hinge lever 228 is pressed down at the leading edge of the paper 38, so the paper detection lever 22 is activated and a 1st movement signal is generated. A delay of 0.2 to 2 seconds is applied to this drive signal +4 by a +fC control circuit (not shown), and then the motor 2 is
8 starts rotating. Due to this delay, the copy paper 38 can be aligned with the reference line 31 of the paper 1 and 7 without haste. When the motor 28 rotates, its rotational driving force is transmitted to the feeding roller 23, so that the manually fed copy paper 38d is fed onto the feeding path surface 21e by the feeding roller 23 and the driven roller 225.

By the way, if the rotational speed of the motor 28 is Nr, p,
rn, the speed at which the copy paper 38 is fed will be a certain value V/ depending on the ratio of the gear wheels and the diameter of the roller.

Se r direct V/ t n rotation speed Nr of motor 28, p
, m and eC may vary slightly due to variations in roller diameter, but can be considered to be approximately constant.

Therefore, in the present invention, when a normal paper feed cassette is installed in a copying machine, the distance 1 between the leading edge position of the copy paper in the cassette and the contact point between the feed roller 23 and the driven roller 225 of the manual paper feed device is 1. If 'JII; is L-, then 1, t7n-9
−V ””/,,,2 = Tsee time only,
The motor 2B is rotated so that the feeding roller 23 is rotated. In other words, the paper detection sensor 22 detects that the manual copy paper 38 is placed on the placement surface 21d.
After a delay time of 0.2 to 2 seconds has passed after the detection of However, the position of the leading edge of the copy paper 3B at this time is the same as the leading edge position of the copy paper 10 (see Figure 2) in the cassette when a normal paper feed cassette 4 (see Figure 1.2) is used. It is said that it is almost the same as IK.

After this, place the original FR4 on the document table of the copying machine, perform operations such as adjusting the density and reduction ratio, and then press the copy start button, and the manually fed copy paper 38 will be processed as a normal copy. It is copied through the same process.

In other words, the leading edge position of manually fed copy paper selected by the manual paper feeding device of the present invention is slightly the same as the leading edge position of copy paper in a normal paper feeding cassette. When the paper feeding roller 14 is lowered and fed into the +I copying machine, the registration rollers in the copying machine work effectively, and a copied image e with a straight edge is obtained.

Also, when the manual copy paper is fed into the copying machine by the paper feed roller 14, the motor 28 of the manual paper feed device
Even if it does not rotate, the one-way clutch 3° allows the feeding roller 23 to rotate freely in the feeding direction, so there is no problem in feeding the 9n photo paper 38.

ε1-7 is a U:1 side view of the manual paper feeder CE showing the second embodiment of the present invention.-The first embodiment of the present invention shown in FIGS. 3 to 6 above. In the manual feed stand 21
The paper feed cassette of 'ITI' 7+f was formed into a closed box shape with the same shape and size, and it was equipped with a conveying means for manually fed copy paper, but in this second example, a normal paper feed cassette was used. is used as a manual feed table 41, and its upper surface is used as a loading surface 41d for manually fed copy paper and a feeding path surface 41e, and conveying means for manually fed copy paper is attached on the top surface.

That is, as explained in FIG. 1.2 above, the normal paper feed cassette 4 is formed into a rectangular box shape, and as shown in FIG. There is also a lid 4b. Therefore, if this bottom W41) is opened to store a large number of stacked standard-sized copy papers 10, and the copy paper 4b is closed, and the hook 43 is used to tack the copy paper 4b to the closed state, the stacked copy paper 10 can be stored. The MM section at the end of the paper 10 is the bottom cover 4b.
The uppermost copy paper is pushed up by the elastic push-up plate 11 fixed to the top, and both leading edge corners meet the separating claws 13, and the feeding height 14 is regulated at a constant level. ing.

As described above, the opening 4a for sending out the copy paper 10 is provided at the top 14 of the cassette 4.

In this embodiment, a means for manually feeding copy paper is provided in a slightly forward chamber on the upper surface of the conventional paper feed cassette 4 constructed as described above. That is, a pair of mounting pieces 44a and 44b are integrally erected from both side walls of the paper feed cassette 40, and the feeding roller 45 is attached to both mounting pieces 44a and 44b.
The support shaft 45a is rotatably supported.

The feed roller 45, which is rotatably suspended horizontally on the upper surface of the cassette 4, is arranged so that a part of its lower circumferential surface is light and in contact with the upper surface of the cassette 4, and its spindle 4
A micro pitch belt gear boiler 46 is fixed to the -1lIll end of 5a. A drive motor 48 is disposed above the feeding roller 45. This motor 48 has both mounting pieces 44a.

44b and is fixed to the inner surface of the ceiling wall of a bridge-like cover 418 that covers the feed row 245 by a mounting member 47. Output shaft 48 of this 1tj4 ill motor 48
In a, a micro pitch belt 5 is attached to the boiler 50 and the gear wheel 46 fixed to the spindle 45a of the roller 45.
1 is being passed.

In addition, a microswitch which is a detection sensor 52 is fixed to the inner surface of the front M'+241b of the J- cover 418, and a sensor lever 52a formed by the actuator of the switch is fixed to the inner surface of the front M'+241b of the J' cover 418. It hangs down toward the upper surface, and its tip enters into an arc-shaped recess 41c provided behind the upper surface of the cassette.

The lower portions of the front and rear walls of the cover 41a are cut out portions 41f + 41g, forming a paper feeding path, and the front portion of the cover 41a serves as a loading surface 41d for manual copy paper. , the rear portion serves as a feeding path surface 41e for manual feeding and copy paper.

An electric control circuit (not shown) is also disposed inside the cover 41a, and when the sensor 52 is activated, an electric cord is connected to the electric control circuit and the motor 45 through a plug 54 connected to an external outlet. Electrolytic corrosion is supplied through 53 ports.

The apparatus H of the second embodiment configured as described above can also automatically feed manual copy paper V to a predetermined position accurately, as in the apparatus of the first embodiment.

That is, since the paper feed cassette 4 having the manual feed tray 41 has already been removably attached to the cassette attachment portion 3 of the copying machine R'1, the plug 54 is connected to the external power source, and after [7 days]
Place a single-sheet copy paper of any size that you want to feed manually on the loading surface 41d, and when the tip of the sheet hits the space between the feeding roller 45 and the top surface of the cassette (iτI), the sensor lever 528 is also pushed by this button. The paper detection sensor 52 is activated and generates a drive signal.-This drive signal is delayed by I]1 fixed second, and then the motor 48 is operated for a certain period of time. A predetermined amount of copy paper is fed into the subject machine.

As in the second embodiment, the apparatus of the present invention can be constructed by skillfully utilizing a regular paper feeding cassette and attaching a conveyance means to it.

Further, in each of the above embodiments, the paper detection sensor 22.5
Using a micro switch as 2, feed low 223.4
5 is Kakeru! 1 (b) The timing is assumed to start ringing after the upper eye switch closes and the tip of the paper (IM) hits the feed roller, but instead of the above microswitch, , manual push-button switch ``,(ge,
After setting the leading edge of the paper against the feeding roller, the push button switch may be activated to rotate the feeding roller for a predetermined period of time. Furthermore, in the second embodiment, the motor 48 is disposed above the feed roller 45 f''L, but the motor 48 is connected to the support shaft 45aK of the feed roller 45 via a one-way clutch. In this way, the micro pitch belt is not required.

As described above, according to the present invention, it is possible to provide an extremely convenient manual paper feeder that eliminates the drawbacks of conventional ones.

[Brief explanation of the drawing]

FIG. 1 shows an example of a manual paper feeder in a conventional copying machine. FIG. 2 is a sectional view of the manual paper feeder shown in FIG. Embodiment 1: A top view of a manual paper feeder 6 in a copying machine; FIGS. Figure 61: A schematic cross-sectional view of the manual paper feeder d shown in Figure 3 above installed in a copying machine; Figure 1 is a manual paper feeder in a copying machine showing a second embodiment of the present invention; FIG. 1......7g Copy machine 2...Copy machine body 3...Paper cassette mounting section 4...
...Paper feed cassette 10 ...First draft paper 21.41 ...Manual feed stand 23.45 ...Feed roller (conveyance means) 28.4
8... Drive motor (conveying means) 38...
...Manual feed single-leaf photographic paper special h' [Applicant: Olympus Optical Industry Co., Ltd. I. Yokonto Fujikawa Seven
Part ゛・.

Claims (1)

[Scope of Claims] A paper feed cassette containing copy paper is removably attached to a paper feed cassette mounting portion of a copying machine main body, and a paper feed roller in the copying machine main body is driven in accordance with a paper feed signal, The paper feed roller is removably attached to the paper feed cassette installation part of the copying machine main body, and serves as a manual feed stand on which single sheet copy paper of any size is placed. , a conveying means provided on the manual feed table and automatically feeding the loaded single sheet copy paper to a paper feed position substantially the same as the copy paper in the paper feed cassette; 68 A manual paper feeding device characterized by the following.