JPH092671A - Automatic paper feeder and recorer using the automatic paper feeder - Google Patents

Abstract

PURPOSE: To satisfy both a function of tip end stopper when loaded a recording medium and a function of separating sheet by sheet in the case of feeding paper, and to prevent a double feed and skew feed even by improperly setting the recording medium, in an automatic paper feeder having a side guide part of the recording medium. CONSTITUTION: When paper is set, a side guide stopper 231 comes into contact with a shaft part 225, and it is eccentrically placed in the periphery of a rotational center 226. A recording sheet P is loaded on a tilted pressure plate 21, and a bank part 231c of the stopper 231 suppresses at least one tip end in right/left both sides of the recording sheet P, to prevent it from dropping down. When paper is fed, the pressure plate 21 is pressed up, with the recording paper P into contact with a paper feed roller rubber 221, and the bank part 231c takes refuge from a tip end of the recording sheet P. When the paper feed roller rubber 221 is rotated to the right, a single sheet of the uppermost recording sheet P is fed. A plurality of sheets of the recording sheets P, when simultaneously fed, are separated by a separating bank 20b of a base.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an automatic sheet feeder for automatically feeding recording sheets one by one and a recording apparatus using the same.

[0002]

2. Description of the Related Art A recording device having a function such as a printer, a copying machine, a facsimile or the like, or a recording device used as an output device of a composite electronic device or a workstation including a computer or a word processor, etc. It is configured to record an image on a recording material (recording medium) such as a plastic thin plate. The recording apparatus can be classified into an ink jet type, a wire dot type, a thermal type, a laser beam type and the like according to a recording method.

In a serial type recording apparatus employing a serial scanning system in which a main scan is performed in a direction intersecting a conveying direction (sub-scanning direction) of a recording material, a recording means mounted on a carriage which moves along the recording material. The image is printed (main scanning), a predetermined amount of paper is fed (pitch transport) after printing of one line is completed, and then the image of the next line is printed on the stopped recording material again. By repeating the operation of (main scanning), recording of the entire recording material is performed. On the other hand, in a line type recording apparatus that records only by sub-scanning in the conveying direction of the recording material, the recording material is set at a predetermined recording position, and one line of recording is collectively performed, and then a predetermined amount is recorded. The paper is fed (pitch feed), and the recording of the next row is collectively performed, whereby the entire recording material is recorded.

Further, the recording medium used in the recording apparatus is
A method of manually feeding sheets one by one, or automatically and continuously by an automatic sheet feeder is known. When the recording medium is automatically and continuously fed one by one by the automatic paper feeding device, a separation claw method using a separation claw for pressing the tip corner portion of the recording medium as a separation method, the recording medium and the stacking means The friction separation method of separating by the frictional force with is widely used.

The following structure has been proposed as a development of the separation claw method. 14 (FIGS. 3, 4, and 5)
Reference) shows the configuration.

The sheet feeding unit 2 is attached to the main body with a corner of 30 ° to 60 °, and has a pressure plate 21 for loading a recording medium (hereinafter referred to as recording sheet) P and a sheet feeding roller 22 for feeding the recording sheet P. It is configured to be attached to the base 20.
A movable side guide 23 is movably provided on the pressure plate 21 to regulate the stacking position of the recording sheets P. The pressure plate 21 is rotatable around a rotation shaft coupled to the base 20, and is biased by the pressure plate spring 24 against the paper feed roller 22. A separation pad 25 made of a material having a large friction coefficient, such as an artificial leather, which prevents double feeding of the recording sheets P is provided at a portion of the pressure plate 21 facing the paper feed roller 22. Further, the base covers a corner portion of the recording sheet P in one direction,
Separation claws 26 for separating the recording sheets P one by one, a bank portion 20b integrally formed on the base 20 for separating those that cannot be used such as thick paper, and separation claws 26 at the plain paper position. , Separation claw 2 at cardboard position
Operation lever 2 for switching so that 6 does not work
8. A release cam 29 for releasing the contact between the pressure plate 21 and the sheet feeding roller 22 is provided.

In the above structure, the release cam 29 pushes down the pressure plate 21 to a predetermined position in the standby state. As a result, the contact between the pressure plate 21 and the paper feed roller 22 is released. Then, in this state, the driving force of the transport roller 36 is changed by the gears or the like to cause the paper feed roller 22 and the release cam 29 to move.
Is released, the release cam 29 separates from the pressure plate 21, so that the pressure plate 21 rises and the paper feed roller 22 and the recording sheet P come into contact with each other. As the paper feed roller 22 rotates, the recording sheet P is picked up and fed. The paper is started, separated one by one by the separation claw 26, and sent to the paper feeding unit 3. The paper feed roller 22 and the release cam 29 feed the recording sheet P to the paper feeding unit 3
It is rotated until it is fed to the feeding roller 3 and is again in a standby state in which the contact between the recording sheet P and the sheet feeding roller 22 is released.
The driving force from 6 is cut off.

With this configuration, it is easy to handle paper types such as plain paper and cardboard. It is easy to handle various paper sizes.
The structure is simple, the number of parts can be reduced, and the cost can be reduced. Further, the stacking angle of the recording sheets P is set to a predetermined angle with respect to the horizontal direction and is inclined,
It has many advantages such that the size of the main body of the apparatus can be reduced, and in particular, it contributes greatly to downsizing of the installation area.

[0009]

The structure of the carriage has the following problems.

(1) Since the bank portion 20b has both functions of a leading end stopper and a separation when the recording sheets P are stacked, the range in which the setting property and the separating property of the recording sheets P can be satisfied at the same time is small. It was a design constraint.

(2) When the user sets the recording sheet P, the movable side guide 23 is set wider than the size of the recording sheet P on which the movable side guide 23 is set, the recording sheet P is forcibly pushed in, and force is applied from above. If the recording sheet P is dropped, the leading edge of the recording sheet P may be set over the bank portion 20b, which may cause double feeding or skewing.

[0012]

According to the present invention, means for loading recording media, means for feeding recording media loaded on the loading means one by one, and recording media at the time of separate feeding In the automatic paper feeder having a side guide portion that regulates at least one end portion of the right and left sides, stopper means that regulates the leading end of the recording medium is provided in the side guide portion.

Further, one of the side guides of the automatic paper feeder is fixed and the other is movable, and separation regulating means for acting on a corner of the recording medium is provided on the fixed side guide side when the recording medium is separated. The stopper means is provided on the movable side guide side.

Further, the stopper means has a rotation center and is rotatably movable, and is retracted when the recording medium is separated, and the separating means is constituted by a rotary feeding body,
The position of the stopper portion varies depending on the rotation angle of the rotary feeding body.

Further, the amount of fluctuation of the stopper means by the feeding rotating body can be changed according to the position of the movable side guide, and the stopper means is a separation regulating means which acts when the recording medium is separated.

Further, the recording medium stacking means is inclined with respect to the horizontal direction, and the stopper means is provided with a restricting means parallel to the stacking direction of the recording media at the time of stacking.

Further, the present invention is a recording apparatus comprising the automatic paper feeding device for recording the recording information of the recording medium.

With the above means, the stopper means and the bank portion 20b can share the functions of both the front end stopper and the separation at the time of stacking the recording medium, so that the degree of freedom in design restrictions is increased. Further, even if the user makes a somewhat unreasonable setting, the recording mediums can be held at a predetermined stacking position, and thus it is possible to perform accurate feeding with less double feeding and skew feeding. Further, the amount of fluctuation of the stopper means by the feeding rotating body can be changed according to the position of the movable side guide, and the stopper means serves as a separation regulating means that operates when the recording medium is separated. Since the back tension is reduced and the stopper means acts as a separating claw only when using plain paper, it is possible to perform accurate feeding with less double feeding and skew feeding. Furthermore, the above effects can be realized with a very simple configuration.

[0019]

【Example】

<First Embodiment> A first embodiment of the present invention will be described with reference to FIGS. A recording apparatus 1 having an automatic paper feeder includes a paper feed unit 2, a paper feed unit 3, a paper discharge unit 4, a carriage unit 5, and a cleaning unit 6. Therefore, these are divided into items and the outline is described sequentially. 1 is a perspective view showing the overall configuration of the recording apparatus 1, FIG. 2 is a front view of the recording apparatus 1, and FIG. 3 is a sectional view of the configuration of the recording apparatus 1.

(A) Paper Feeding Unit The paper feeding unit 2 has a structure in which a pressure plate 21 on which the recording sheets P are stacked and a paper feeding roller 22 for feeding the recording sheets P are attached to the base 20. A movable side guide 23 is movably provided on the pressure plate 21 to regulate the stacking position of the recording sheets P. The side guide 23 is provided with a side guide stopper 231 that regulates the leading edge of the recording sheet P. The pressure plate 21 is rotatable around a rotation shaft coupled to the base 20, and is biased by the pressure plate spring 24 against the paper feed roller 22. Pressure plate 2 facing the paper feed roller 22
A separation pad 25 made of a material having a large friction coefficient, such as an artificial leather, which prevents double feeding of the recording sheets P is provided at the first portion. Further, the base 20 covers a corner portion of the recording sheet P in one direction, and the base 20 is provided with a separation claw 26 for separating the recording sheets P one by one, and a separation claw 26 such as thick paper that cannot be used. An integrally formed bank portion 31c,
An operation lever 28 for switching so that the separation claw 26 operates at the plain paper position and no separation claw 26 at the thick paper position, and a release cam 29 for releasing the contact between the pressure plate 21 and the paper feed roller 22 are provided. There is.

In the above configuration, in the standby state, the release cam 29 pushes the pressure plate 21 down to a predetermined position. As a result, the contact between the pressure plate 21 and the paper feed roller 22 is released. Then, in this state, the driving force of the transport roller 36 is changed by the gears or the like to cause the paper feed roller 22 and the release cam 29 to move.
Is released, the release cam 29 separates from the pressure plate 21, so that the pressure plate 21 rises and the paper feed roller 22 and the recording sheet P come into contact with each other. As the paper feed roller 22 rotates, the recording sheet P is picked up and fed. The paper is started, separated one by one by the separation claw 26, and sent to the paper feeding unit 3. The paper feed roller 22 and the release cam 29 feed the recording sheet P to the paper feeding unit 3
The recording sheet P is rotated until it is fed to the recording sheet P, the contact state between the recording sheet P and the sheet feeding roller 22 is released again, and the driving force from the conveyance roller 36 is cut off.

(B) Paper Feeding Section The paper feeding section 3 includes a transport roller 36 for transporting a recording sheet P and a transport roller P.
It has an E sensor 32. A driven pinch roller 37 is provided in contact with the transport roller 36. The pinch roller 37 is held by the pinch roller guide 30 and is urged by the pinch roller spring 31 to move the pinch roller 3
The conveyance force of the recording sheet P is generated by pressing 7 to the conveyance roller 36. Further, an upper guide 33 and a platen 34 for guiding the recording sheet P are arranged at the entrance of the paper feeding unit 3 to which the recording sheet P is conveyed. Further, the upper guide 33 uses PE for detecting the leading edge and the trailing edge of the sheet P.
A PE sensor lever 35 that communicates with the sensor 32 is provided. Further, a recording head 7 that forms an image based on image information is provided downstream of the transport roller 36 in the recording sheet transport direction.

In the above structure, the recording sheet P sent to the paper feeding section 3 is guided by the platen 34, the pinch roller guide 30 and the upper guide 33, and is sent to the roller pair of the conveying roller 36 and the pinch roller 37. At this time, the PE sensor lever 35 detects the leading edge of the conveyed recording sheet P, and thereby obtains the printing position of the recording sheet P. The recording sheet P is conveyed on the platen 34 by rotating a pair of rollers 36 and 37 by an LF motor (not shown).

As the recording head 7, an easily replaceable ink jet recording head integrally formed with an ink tank is used. The recording head 7 can apply heat to the ink with a heater or the like. The ink causes film boiling of the heat, and the pressure change caused by the growth or contraction of the bubbles due to the film boiling causes the ink to be ejected from the nozzles 70 of the recording head 7 to form an image on the recording sheet P.

Next, an embodiment of an ink jet type recording apparatus for a sheet fed from the sheet feeding apparatus will be described. Explaining the configuration of the sheet feeding device 301, as shown in FIG.
The sheet P is attached to the apparatus main body at an angle of 60 °, and the set sheet P is horizontally discharged after recording. The recording head 324 is configured to perform recording on the sheet P based on predetermined image information.

The recording head 324 records an ink image on the sheet P conveyed by the conveying roller and the pinch roller. As a recording unit in this apparatus, an ink jet recording system for discharging ink from a recording head for recording is used. That is, the recording head has a fine liquid discharge port (orifice), a liquid path, an energy action section provided in a part of the liquid path, and an energy generation section for generating droplet forming energy to act on the liquid in the action section. Means.

As the energy generating means for generating such energy, a recording method using an electromechanical transducer such as a piezo element, electromagnetic waves such as laser are irradiated to generate heat, and droplets are ejected by the action of the heat generation. There are a recording method using an energy generating means, a recording method using an energy generating means for heating a liquid and discharging the liquid by an electrothermal converter such as a heating element having a heating resistor.

Among them, the recording head used in the ink jet recording method for ejecting a liquid by thermal energy is
Since the liquid ejection ports (orifices) for ejecting the recording droplets to form the ejected solution droplets can be arranged at a high density, it is possible to perform high-resolution recording. Among them, the recording head using the electrothermal converter as the energy generating means can easily be made compact, and has the advantages of the IC technology and the microfabrication technology, which have been remarkably improved in the technology and the reliability in the recent semiconductor field. This is advantageous because it can be used in two parts, high-density mounting is easy, and the manufacturing cost is low.

As shown in FIG. 10, the recording unit 325 includes a carriage 326 to which the recording head 324 is attached, a guide shaft 327 for reciprocating the carriage 326 in a direction perpendicular to the sheet conveying direction, and a rear end of the carriage 326. And a timing belt 33 that holds the distance between the recording head 324 and the sheet P and transmits the drive of the carriage motor 329 to the carriage 326.
0, an idle pulley 331 that stretches the timing belt 330, a flexible substrate 332 for transmitting a head drive signal from an electric substrate to the recording head 324, and the like. The recording head 324 is a replaceable recording head that is configured integrally with an ink tank, and scans integrally with the carriage 326 to record an ink image on the sheet P conveyed on the platen.

As shown in FIG. 10, the discharge sheet portion 333 includes a discharge sheet roller 334, a transmission roller 335 for transmitting the driving of the conveying roller to the discharge sheet roller 334, a spur 336 for assisting the discharge of the sheet P, and a discharge sheet. Tray 337
Etc. are equipped. The sheet P after recording is discharged onto the sheet discharge tray 337 by the sheet discharge rollers 334 and the spurs 336 without soiling the recording surface.

The cleaning section 338, as shown in FIG. 10, is a pump 3 for cleaning the recording head 324.
39, a cap 340 for suppressing drying of the recording head 324, and a drive switching arm 341 for switching the drive from the conveying roller to the sheet feeding device 301 and the pump 339. The drive switching arm 3
41 is in the position shown in the figure except during feeding and cleaning, and fixes a planet gear (not shown) that rotates around the axis of the conveyance roller at a predetermined position, so that the conveyance roller is driven by the pump 339 and It is not transmitted to the sheet feeding device 301. Also, by moving the carriage 326,
When the drive switching arm 341 is moved in the direction of arrow A in FIG. 10, the planet gears move in accordance with the forward / reverse rotation of the transport roller, the drive is transmitted to the sheet feeding device 301 during the forward rotation of the transport roller, and during the reverse rotation. The drive is transmitted to the pump 339.

The LF motor 323 for driving the conveying rollers and the carriage motor 329 for driving the carriage 326 are stepping motors which rotate by a predetermined angle in response to a signal sent from a driver (not shown).

(C) Carriage Section The carriage section 5 has a carriage 50 for mounting the recording head 7. The recording head 7 is an ink tank-integrated removable recording head, and can be removed by scanning the hook lever 53. The carriage 50 includes a guide shaft 81 and a carriage 50 for reciprocating scanning in a direction perpendicular to the conveyance direction of the recording sheet P.
It is supported by a guide rail 82 that holds the rear end of the recording head 7 and maintains the gap between the recording head 7 and the recording sheet P.
The guide shaft 81 and the guide rail 82 are attached to the chassis 8. Also, the carriage 50
Is a carriage motor 80 attached to the chassis 8.
Is driven via the timing belt 83. The timing belt 83 is stretched and supported by an idle pulley 84. Further, the carriage 50 includes a flexible board 56 for transmitting a head signal from the electric board 9 to the recording head 7.

In the above structure, when an image is formed on the recording sheet P, the roller pair 36 and 37 convey the recording sheet P to the row position (position in the conveying direction of the recording sheet P) for image formation, and the carriage motor 80. Thus, the carriage 50 is moved to a column position for forming an image (a position perpendicular to the conveyance direction of the recording sheet P), and the recording head 7 is opposed to the image forming position. Then, the recording head 7 ejects ink toward the recording sheet P in response to a signal from the electric substrate 9 to form an image.

(D) Paper Discharging Section In the paper discharging section 4, the transmission roller 40 is in contact with the conveying roller 36, and the transmission roller 40 is in contact with the paper ejection roller 41. Therefore, the driving force of the transport roller 36 is transmitted to the discharge roller 41 via the transmission roller 40. Further, a spur 42 is in contact with the paper discharge roller 41 so that the spur 42 can rotate following the paper discharge roller 41. With the above configuration, the recording sheet P on which an image is formed by the carriage unit 5 is sandwiched in the nip between the paper discharge roller 41 and the spur 42, conveyed, and discharged to a paper discharge tray (not shown) or the like.

(E) Cleaning Unit The cleaning unit 6 applies the driving force from the pump 60 for cleaning the recording head 7 and the cap 61 and the conveying roller 36 for suppressing the drying of the recording head 7 to the paper feeding unit 2 and the pump 60. It is composed of a drive switching arm 62 for switching to. When the drive switching arm 62 is not feeding or cleaning, the planetary gear (not shown) that rotates around the shaft center of the transport roller 36 is fixed at a predetermined position, so that the drive unit 2 and the pump 60 are driven. No power is transmitted.
When the drive switching arm 62 is moved in the direction of the arrow A by moving the carriage 50, the planetary gear becomes free. Therefore, the planetary gear moves in accordance with the forward rotation and the reverse rotation of the transport roller 36, and the transport roller 36 moves. The driving force is transmitted to the sheet feeding section 2 when the sheet rotates in the normal direction, and the driving force is transmitted to the pump 60 when the sheet rotates in the reverse direction.

Next, details of each main part of the paper feeding unit 2 will be described. 4 to 9 are explanatory diagrams thereof.

The paper feed unit 2 is a unit in which the components of the paper feed unit are attached to the base 21. The paper feed unit 2 of this embodiment is based on one side of the recording sheet P, and the inside of the right side plate of the base 20 is the paper reference. In the base 20, the pressure plate 21 can be retracted as shown in FIG. 3, and a recess for forming the pressure plate spring 24 is formed at a position substantially facing the roller portion 223 of the sheet feeding roller 22. The pressure plate 21 is connected to the base 20 by pressure plate shafts 21b at the upper ends of both ends and is rotatable about the pressure plate shaft 21b.
A separation pad 25 having a relatively large friction coefficient, such as artificial leather, is provided at the position of the paper feed roller of the pressure plate 21 to prevent double feeding when the number of sheets becomes small. Both ends of the paper feed roller 22 are held by the base 20 and are rotatable. The paper feed roller 22 includes a shaft portion 225 and a roller portion 2.
23 is an integrally molded product made of plastic or the like, and is provided with a paper feed roller rubber 221 for conveying the recording sheet P around the roller portion 223. Roller part 223
Is D-shaped (or half-moon shaped), and roller rollers 222 having a radius smaller than the radius of the paper feed roller rubber 221 attached to the paper feed roller 22 by 0.5 to 3 mm are provided on the outer sides of the roller portions 223. This prevents the recording sheet P from touching the roller rubber 221 of the paper feed roller 22 except when the paper is being fed, and prevents the image from being soiled or the paper feed roller 22 from being displaced. Also, two roller parts 223 are provided, which are about 40 mm and about 170 m, respectively, based on the paper standard.
It is fixed at the m position. Therefore, the A4 size and the like are conveyed by the two roller portions 223, and the postcard and the like are conveyed by the one roller.

The switching arm 61 of the cleaning unit 6 described above.
Is moved in the direction of arrow A by the carriage unit 5 and the transport roller 36 is rotated in the normal direction, a planet gear (not shown) moves and meshes with the input gear 202 to transmit the drive to the paper feeding unit. The input gear 202 is connected to the paper feed roller 22 via idler gears 203 and 204.
The recording sheet P can be conveyed by transmitting the drive to 5 and rotating the paper feed roller 22. Further, the paper feed roller gear 205 is a clutch gear 206 and an idler gear 2
The drive is transmitted to the release cam 29 via 07. At this time, the paper feed roller 22 and the release cam 29 are configured to be in phase with each other for each rotation, and when the pressure plate 21 is released as shown in FIG. It is configured so as to face the position 21. The release cam 29 is configured to retract the pressure plate 21 from the paper feed roller 22 only during a half-moon angle of the paper feed roller 22 of about 120 °. The pressure plate 21 is retracted by pushing down the pushed-down portion 21c of the pressure plate 21. And, except the half-moon portion of the paper feed roller 22, the pressure plate 21
The recording sheet P or the pressure plates 21 and 1 when facing each other.
It is configured to come into contact with each other at a pressure of 00 to 500 g.
When the pressure plate 21 is retracted, the pressure plate cam 21 attached to the base 20 is pushed down by the cam 21d on the side closer to the push-down portion 21c of the pressure plate 21, and the pressure plate cam 211 rotates about its axis. Then, the pressure plate cam 211 pulls down the cam 21f on the outside of the left paper feed roller 22. As described above, even if the push-down portion 21c at the end of the pressure plate 21 is lowered, the pressure plate 21 does not tilt with respect to the base 20 and can be retracted substantially in parallel. The clutch spring 2 is provided inside the clutch gear 206.
06b is provided, and the spring is configured to be tightened in the direction of arrow B in FIG. 6 so as not to rotate in the reverse direction. This allows the paper feed roller 2 to be used when registration is performed.
Since 2 does not rotate due to the elasticity of the recording sheet P, good registration can be performed. Separation claw 26
Is rotatable around 26b, and basically the claw spring 2
20 to 10 on the recording sheet P or the pressure plate 21 depending on 61.
Energized at 0g. The separation claw 26 separates a so-called plain paper recording sheet P when it is fed, and is provided only on the paper reference side as shown in FIG.
It has a shape that covers the corners of a triangle. The recording sheets P can be separated one by one by receiving resistance in the triangular portion.

The operation lever 28 has two positions, a plain paper feed position and a thick paper feed position, and each position is provided at angular position intervals of about 20 ° to 50 °. At the plain paper feed position, the release cam 29 is set by the cam of the operation lever 28 so as to act on the separation claw. Therefore, when the pressure plate 21 is retracted, the separation claw 26 can be rotated upward as shown in FIGS. 3 and 6 to set the recording sheet P, and at the time of separation at the time of paper feeding, it is lowered to act on the corner portion of the recording sheet P. Then separate. At the thick paper feed position, the release cam 29 does not act on the separation claw 26, so that the separation claw 26 moves toward the pressure plate 2.
It will be urged to 1 and will not work during separation. The recording sheet P such as thick paper is separated using the separation bank 20b formed integrally with the base 20.

A movable side guide 23 that can slide left and right on the pressure plate 21 is attached so that recording sheets P of different sizes can be set on the paper reference surface. The side guide 23 is attached by sandwiching the pressure plate 21 by the elasticity of the clip 23c of the side guide 23 as shown in FIG. The side guide 23 is provided with a knob 23d for the user to operate, and the sliding resistance during the operation is set to about 250 to 1000 g.

As shown in FIG. 8, the side guide 23 has a side guide stopper 231 for regulating the leading end of the recording sheet P.
Is attached. The stopper 231 is rotatable around a shaft 231d and is biased upward by a torsion coil spring 232. The spring 232 is the side guide 2
3 is attached to the spring stopper 23b and the spring stopper 231b of the stopper 231 to operate. Then, it is held at a position where it abuts on the shaft portion 225 of the paper feed roller 22. The shaft portion 225 is eccentric, and as shown in FIG.
The stopper 231 is located above when the paper is set and when the paper is conveyed (c), and the leading edge of the recording sheet P is regulated by the bank portion 231c to prevent the recording sheet P from dropping and prevent double feeding and skew feeding. You can Further, (b) during paper feeding, the stopper 231 is pushed down by the eccentric cam of the shaft portion 225, and the bank portion 231c is pushed all the way in.
It does not cause any harm during separation.

<Second Embodiment> In the first embodiment,
The stopper 231 has a regulation portion at the leading end of the recording sheet P which is the bank portion 2.
31c only, but as shown in FIG.
The regulation portion 231e may be provided in parallel with the stacking direction of. In this case, even if the corner portion of the recording sheet P is lifted, the effect can be enhanced, such that the regulation effect can be enhanced.

The other structure is the same as that of the first embodiment.

<Third Embodiment> In the first embodiment,
Although the cam shape of the shaft portion 225 acting on the stopper 231 is one kind, it may be two kinds of configurations as shown in FIGS. For thick paper such as envelopes and postcards, stopper 2
If the leading edge of the paper is even a little on the bank portion 231c of 31, the load is large. Therefore, a thick paper corresponding cam 224 is provided on the shaft 225 corresponding to the positions of the envelope and the postcard. Since the pressing amount is larger than the cam shape of the shaft portion 225, the upper recording sheet P comes off the bank portion 231c and is easily separated.

The other structure is the same as that of the first embodiment.

[0047]

According to the first invention of the present application, the following effects are obtained.

(1) The stopper means and the bank portion 2 have both functions of a front end stopper and a separating function when a recording medium is stacked.
Since the functions can be shared with 0b, the degree of freedom in design restrictions is increased.

(2) Even if the user makes a somewhat unreasonable setting, the recording medium can be held at a predetermined stacking position, so that it is possible to perform accurate feeding with less double feeding and skew feeding.

(3) The amount of fluctuation of the stopper means by the feeding rotary member can be changed according to the position of the movable side guide, and the stopper means serves as a separation regulating means that acts when the recording medium is separated. Since the back tension is reduced and the stopper means acts as a separating claw only when using plain paper, accurate feeding can be performed with less double feeding and skew feeding.

(4) The above effects can be realized with a very simple structure.

According to the second invention of the present application, the effect of the invention according to claim 1 can be further improved by matching the fixed side guide and the movable side with the width of the recording medium.

According to the third invention of the present application, in addition to the effect of the first invention, there is an effect that the recording media are more reliably separated one by one.

According to the fourth invention of the present application, in addition to the effect of the third invention, there is an effect that the apparatus is compact and operates smoothly.

According to the fifth invention of the present application, in addition to the effect of the fourth invention, there is an effect that the stopper means is easy to operate.

According to the sixth invention of the present application,
In addition to the effect of the fifth aspect of the invention, it is possible to smoothly feed the recording medium.

According to the seventh invention of the present application, the effects of the second to sixth inventions can be further improved even if the widths of the recording media are different.

According to the eighth invention of the present application, in addition to the effects of the seventh invention, the number of parts is reduced and the structure is simplified.

According to the ninth invention of the present application,
In addition to the effect of the invention of the sixth aspect, there is an effect that the position of the recording medium having the raised corner can be regulated.

According to the tenth invention of the present application, the first
In addition to the effects of the inventions of 9 to 9, since the automatic paper feeding device and the recording device are integrated, it is convenient.

According to the eleventh invention of the present application, the first
In addition to the effect of the invention of No. 0, it is possible to arrange the liquid ejection ports (orifices) for ejecting the recording liquid droplets to form the ejected solution droplets at a high density, and therefore perform high-resolution recording. Has the effect that it is possible.

According to the twelfth invention of the present application, the first
In addition to the effects of the first aspect of the invention, the recording means can be easily made compact and the manufacturing cost can be reduced.

[Brief description of drawings]

FIG. 1 is a perspective view showing the overall configuration of a recording apparatus according to a first embodiment of the present invention.

FIG. 2 is a front view of the recording apparatus according to the first embodiment of the invention.

FIG. 3 is a configuration cross-sectional view of the recording apparatus according to the first embodiment of the present invention.

FIG. 4 is a front view of the ASF according to the first embodiment of the present invention.

FIG. 5 is a side view of the ASF according to the first embodiment of the present invention.

FIG. 6 is an exploded side view of the ASF according to the first embodiment of the present invention.

FIG. 7 is a cross-sectional view of ASF in the first embodiment of the present invention.

FIG. 8 is a configuration diagram of a side guide and a stopper in the first embodiment of the present invention.

FIG. 9 is an operation explanatory view of the side guide stopper in the first embodiment of the present invention.

FIG. 10 is a perspective view showing the overall configuration of the ink jet recording apparatus in the first embodiment of the present invention.

FIG. 11 is an operation explanatory view of the side guide stopper in the second embodiment of the present invention.

FIG. 12 is a front view of an ASF according to a third embodiment of the present invention.

FIG. 13 is an operation explanatory view of the side guide stopper in the third embodiment of the present invention.

FIG. 14 is a configuration cross-sectional view of a conventional recording device.

[Explanation of symbols]

DESCRIPTION OF SYMBOLS 1 ... Recording device 2 ... Paper feeding part 3 ... Paper feeding part 4 ... Paper discharging part 5 ... Carriage part 6 ... Cleaning part 7 ... Recording head 8 ... Chassis 9 ... Electric board 20 ... Base 20b ... Separation bank 21 ... Pressure plate 22 ... Paper feed roller 23 ... Movable side guide 24 ... Pressure plate spring 25 ... Separation pad 26 ... Separation claw 28 ... Operation lever 29 ... Release cam 36 ... Conveying roller 37 ... Pinch roller 50 ... Carriage 53 ... Hook lever 56 ... Flexible board 58 ... Paper Interval adjustment section 80 ... Carriage motor 81 ... Guide shaft 82 ... Guide rail 83 ... Timing belt 84 ... Idle pulley 221 ... Feed roller rubber 222 ... Roller roller 224 ... Thick paper compatible cam 225 ... Shaft section 231 ... Side guide stopper 231c ... Bank section 231e ... Regulator 232 ... Torsion coil spring

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tan Atming 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Yasuhiro Unozawa 3-30-2 Shimomaruko, Ota-ku, Tokyo Non-Incorporated (72) Inventor Koichi Tanno 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Makoto Karama 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc. (72) Inventor Masaya Shinmachi 3-30-2 Shimomaruko, Ota-ku, Tokyo Canon Inc.

Claims (12)

[Claims] 1. A means for loading recording media, a means for feeding the recording media loaded on the loading means one by one, and a side guide for regulating at least one end of the recording media at the time of separate feeding. An automatic sheet feeder having a section, wherein the side guide section is provided with stopper means for regulating the leading edge of the recording medium. 2. One of the side guides of the automatic paper feeder is fixed and the other is movable, and separation separation means for acting on a corner of the recording medium is provided on the fixed side guide side when separating the recording medium. The automatic paper feeder according to claim 1, wherein the stopper means is provided on the side of the movable side guide. 3. The automatic paper feeder according to claim 2, wherein the stopper means is movable and retracts when the recording medium is separated. 4. The separating means comprises a rotary feeder,
4. The automatic paper feeder according to claim 3, wherein the position of the stopper portion changes according to the rotation angle of the rotary feeding body. 5. The automatic paper feeder according to claim 4, wherein the stopper means has a rotation center and is rotatable. 6. The automatic paper feeding device according to claim 2, wherein the recording medium stacking means is inclined with respect to the horizontal direction. 7. The automatic sheet feeding device according to claim 2, wherein a variation amount of the stopper means by the feeding rotating body is changed according to a position of the movable side guide. . 8. The automatic paper feeder according to claim 7, wherein the stopper means is a separation regulating means that operates when the recording medium is separated. 9. The automatic paper feeding device according to claim 2, wherein the stopper means is provided with a regulating means parallel to the stacking direction of the recording mediums at the time of stacking. 10. A recording apparatus comprising the automatic paper feeding device according to claim 1, wherein recording information of the recording medium is recorded. 11. The recording apparatus according to claim 10, wherein the recording apparatus is an inkjet recording method in which a recording unit ejects ink in accordance with a signal to perform recording. 12. The recording device ejects ink from an ejection port by the recording means energizing an electrothermal converter in response to a signal, and the growth of bubbles caused by heating beyond film boiling by the electrothermal converter. The recording apparatus according to claim 10, wherein the recording apparatus is an inkjet method that performs recording.