CN1092126C - Method and device for paper feeding - Google Patents
Method and device for paper feeding Download PDFInfo
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- CN1092126C CN1092126C CN98106001A CN98106001A CN1092126C CN 1092126 C CN1092126 C CN 1092126C CN 98106001 A CN98106001 A CN 98106001A CN 98106001 A CN98106001 A CN 98106001A CN 1092126 C CN1092126 C CN 1092126C
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- paper
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/65—Apparatus which relate to the handling of copy material
- G03G15/6502—Supplying of sheet copy material; Cassettes therefor
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- Sheets, Magazines, And Separation Thereof (AREA)
Abstract
The invention relates to a method and apparatus of paper supply. Papers 9 on a paper tray 8 are delivered by an oscillatable pickup roller, manipulated sheet by sheet by a separation part which consists of a feed roller and a separate roller. A release lever 12 is operated to the pickup roller, while a pressure lever 15 is operated to the separate roller. The release lever 12 and the pressure lever 15 are connected by a link 14. When the paper tray 8 is drawn out from the main body, the pickup pressure and the separating pressure are released by the cooperative operation of the release lever 12 and the pressure lever 15. It can be able to prevent falling-off of papers when a paper tray is drawn out, while realizing miniaturizing and reducing the cost of the device.
Description
Technical field
The present invention relates to be applicable to the paper feed of duplicator, facsimile apparatus, chopping machine, printer etc., relate in particular to green phase and paper is connect from freely paper carrying roll dispatch be positioned in paper on the paper pallet of releasably being located at image forming device body, connect from freely the disengagement gear paper feed of paper supply one by one by paper feed roller and separate roller.
Background technology
Be positioned in paper on the paper pallet by the paper carrying roll dispatch, separating one by one by the separated part that constitutes by paper feed roller and separate roller in the paper feeding method and device of paper, when pulling out the paper pallet from image forming device body, in order to prevent that paper breaks away from the paper pallet, must make paper carrying roll leave paper, and make separate roller leave paper feed roller.
In paper feeding method and device in the past, the releasing of paper carrying roll pressure is that for example the spy opens clear 59-57841 communique, spy to open clear 59-69328 communique disclosed like that, control by on/off screw actuator (solenoid), when non-action and during loading and unloading paper pallet, make paper carrying roll leave paper.
In addition, the releasing of separating pressure also be for example the spy to open flat 6-183600 communique disclosed like that, control by the on/off screw actuator, when non-action and when loading and unloading the paper pallet, the roller of separated part is left.
As mentioned above, in the past paper feeding method and device, control the pressurization of the pressurization of removing paper carrying roll and separate roller by the on/off screw actuator, like this, can hinder equipment miniaturization and cost degradation.
Open strictly according to the facts shown in the clear 60-122732 communique, though also can remove separating pressure by loading and unloading paper pallet,, as mentioned above, it is not enough only removing separating pressure.
Summary of the invention
The present invention puts forward in view of the existing problem of above-mentioned prior art, first purpose of the present invention is, a kind of paper feed is provided, operation interlock with loading and unloading paper pallet, remove paper injection pressure and separating pressure, with miniaturization of simple structure implement device and cost degradation, and can prevent that when pulling out the paper pallet paper from coming off from the paper pallet.
Second purpose of the present invention is to provide a kind of paper feed, and at least one side and the turning gear of its holdout device form as one, and can realize inexpensive devices with simpler structure.
The 3rd purpose of the present invention is to provide a kind of pivoting part and paper injection pressure drag locking apparatus to form one and pivoting part and separating pressure holdout device interlock, can realizes the paper feed of inexpensive devices with simple structure.
The 4th purpose of the present invention is to provide a kind of can realize the paper feed that cost degradation, while reliability are improved with simple structure.
The 5th purpose of the present invention is to provide a kind of paper feed, and it can be carried extraneous position at paper and remove paper injection pressure at an easy rate, when pulling out the paper pallet, can not tangle paper, can further improve the reliability of device.
To achieve these goals, the present invention proposes a kind of paper feed, comprising:
Releasably be arranged on the paper pallet in the image processing system; Dispatch is positioned in the paper carrying roll of paper in the paper pallet, and this paper carrying roll can contact with the paper in being contained in the paper pallet or separate; Be positioned at the paper feed roller in paper carrying roll paper feeding direction downstream; Be oppositely arranged with paper feed roller, also can be in contact with it and the separate roller that separates, this separate roller and paper feed roller constitute disengagement gear, are used for many ground and separate the paper of discharging; It is characterized in that, also comprise:
The paper injection pressure device that paper carrying roll and paper is joined exert pressure;
The paper injection pressure drag locking apparatus that stops paper injection pressure;
The pressure device that separates that above-mentioned separate roller and paper feed roller is joined exert pressure;
The separating pressure holdout device that stops separating pressure;
The rotating pivoting part by the operation of loading and unloading above-mentioned paper pallet;
When pulling out above-mentioned paper pallet above-mentioned pivoting part is composed tax with elastic force with the elastic force device;
Make the linkage of at least one side's interlock of above-mentioned pivoting part and above-mentioned paper injection pressure drag locking apparatus or separating pressure holdout device.
According to paper feed of the present invention, its feature is that also above-mentioned linkage makes above-mentioned pivoting part and separating pressure holdout device interlock, and above-mentioned pivoting part and above-mentioned paper injection pressure drag locking apparatus form as one.
According to paper feed of the present invention, its feature also is:
Also comprise the paper injection arm, be provided with the supported end that is rotatably mounted in the image processing system, this paper injection arm can rotate around this supported end, and described paper carrying roll is arranged on an end relative with supported end on the paper injection arm;
Above-mentioned paper injection pressure device is the paper injection pressing spring, and it acts on the described paper injection arm, makes the paper injection arm be applied in elastic force;
Above-mentioned paper injection pressure drag locking apparatus comprises the paper injection pressure drag locking apparatus that is formed on the above-mentioned paper injection arm and the paper injection pressure drag locking apparatus on the following relieving rod;
Above-mentioned pivoting part is a relieving rod, and it comprises: be arranged on the axis of revolution in the relieving rod, this relieving rod can rotate around axis of revolution; Paper injection pressure drag locking apparatus on the paper injection pressure drag locking apparatus, itself and described paper injection arm is oppositely arranged, along with the rotation of relieving rod can or separate with the contact of paper injection pressure drag locking apparatus; Be positioned at the protuberance of relieving rod end, when described paper pallet is put into image processing system, contact and backed down with described paper pallet side wall;
Above-mentioned separation pressure device comprises pressure rod and pressing spring, and pressure rod is used for making described separate roller to separate with described paper feed roller or contacts, and it comprises: be arranged on the axis of revolution in the described pressure rod, this pressure rod can rotate around axis of revolution; Be formed on the support at pressure rod one end place, make the contact of separate roller and paper feed roller along with the rotation of pressure rod or separate; Pressing spring acts on the described pressure rod, makes described pressure rod be applied in elastic force;
The wedge portion that above-mentioned separating pressure holdout device is a connecting rod, connecting rod one end is connected with described relieving rod, and the other end acts on the described pressure rod separably;
Above-mentioned tax is to remove spring with the elastic force device, and it acts on the described connecting rod, makes described connecting rod be applied in elastic force.
Above-mentioned linkage comprises the pin that is located at the relieving rod end and is located at the slotted hole of connecting rod one end, above-mentioned pin and slotted hole tabling.
According to paper feed of the present invention, its feature is that also described paper injection pressing spring applies elastic force along the direction that described paper carrying roll is contacted with paper.
According to paper feed of the present invention, its feature also is, described releasing spring acts on the described relieving rod through described connecting rod, and the paper injection pressure drag locking apparatus on the relieving rod is contacted with paper injection pressure drag locking apparatus on the paper injection arm, and described connecting rod is contacted with described pressure rod.
According to paper feed of the present invention, its feature is that also described pressing spring acts on the described pressure rod, and described separate roller is contacted with paper feed roller.
According to paper feed of the present invention, its feature is that also the elastic force of described releasing spring is greater than the elastic force of paper injection pressing spring and the generation of described pressing spring.
According to paper feed of the present invention, its feature is that also the paper injection pressure drag locking apparatus of described relieving rod and the paper injection pressure drag locking apparatus on the paper injection arm are the inclined-planes.
To achieve these goals, the present invention proposes another kind of paper feed, comprising:
Releasably be arranged on the paper pallet in the image processing system; Dispatch is positioned in the paper carrying roll of paper in the paper pallet, and this paper carrying roll can contact with the paper in being contained in the paper pallet or separate; Be positioned at the paper feed roller in paper carrying roll paper feeding direction downstream; Be oppositely arranged with paper feed roller, also can be in contact with it and the separate roller that separates, this separate roller and paper feed roller constitute disengagement gear, are used for many ground and separate the paper of discharging; It is characterized in that, also comprise:
The paper injection pressure device that paper carrying roll and paper is joined exert pressure;
The paper injection pressure drag locking apparatus that stops paper injection pressure;
The pressure device that separates that above-mentioned separate roller and paper feed roller is joined exert pressure;
The separating pressure holdout device that stops separating pressure;
The rotating pivoting part by the operation of loading and unloading above-mentioned paper pallet;
When pulling out above-mentioned paper pallet above-mentioned pivoting part is composed tax with elastic force with the elastic force device;
At least one side of above-mentioned pivoting part and above-mentioned paper injection pressure drag locking apparatus or separating pressure holdout device is become one.
According to paper feed of the present invention, its feature also is, above-mentioned pivoting part and above-mentioned separating pressure holdout device are formed as one, and above-mentioned separating pressure holdout device joins with the axle that drives above-mentioned separate roller, and its material is the oil-containing polyacetal.
According to paper feed of the present invention, its feature also is:
Also comprise the paper injection arm, be provided with the supported end that is rotatably mounted in the image processing system, this paper injection arm can rotate around this supported end, and described paper carrying roll is arranged on an end relative with supported end on the paper injection arm;
Above-mentioned paper injection pressure device is the paper injection pressing spring, and it acts on the described paper injection arm, makes the paper injection arm be applied in elastic force;
Above-mentioned paper injection pressure drag locking apparatus comprises the paper injection pressure drag locking apparatus that is formed on the above-mentioned paper injection arm and the paper injection pressure drag locking apparatus on the following relieving rod;
Above-mentioned pivoting part is a relieving rod, and it comprises: be arranged on the axis of revolution in the relieving rod, this relieving rod can rotate around axis of revolution; Paper injection pressure drag locking apparatus on the paper injection pressure drag locking apparatus, itself and described paper injection arm is oppositely arranged, along with the rotation of relieving rod can or separate with the contact of paper injection pressure drag locking apparatus; Be positioned at the protuberance of relieving rod end, when described paper pallet is put into image processing system, contact and backed down with described paper pallet side wall; The camming surface that extends out from described relieving rod, when described paper pallet when image processing system takes out, this camming surface cooperates with separate roller, and separate roller is separated with paper feed roller;
Above-mentioned separation pressure device comprises pressure rod and pressing spring, and pressure rod is used for making described separate roller to contact with described paper feed roller, and it comprises: be arranged on the axis of revolution in the described pressure rod, this pressure rod can rotate around axis of revolution; Be formed on the support at pressure rod one end place, it cooperates with separate roller, and separate roller is contacted with paper feed roller; Pressing spring acts on the described pressure rod, makes described pressure rod be applied in elastic force;
Above-mentioned tax is to remove spring with the elastic force device, and it acts on the described relieving rod, makes described relieving rod be applied in elastic force.
According to paper feed of the present invention, its feature also is, described releasing action of the spring makes the paper injection pressure drag locking apparatus on the relieving rod contact with paper injection pressure drag locking apparatus on the paper injection arm on described relieving rod, and described camming surface is separated separate roller and paper feed roller simultaneously.
According to paper feed of the present invention, its feature also is, the support unit of the above-mentioned paper carrying roll of supporting and the paper guiding parts of guiding paper are formed as one, and above-mentioned paper injection pressure drag locking apparatus and above-mentioned paper guiding parts join, and make the lifting of above-mentioned paper guiding parts.
The following describes effect of the present invention.
According to paper feed of the present invention,, remove paper injection pressure and separating pressure, and, when pulling out the paper pallet, can prevent that paper from coming off from the paper pallet with miniaturization of simple structure implement device and cost degradation with the operation interlock of loading and unloading paper pallet.
According to paper feed of the present invention, at least one side and the pivoting part of holdout device form as one, so can realize inexpensive devices with simpler structure.
According to paper feed of the present invention, pivoting part and paper injection pressure drag locking apparatus form as one, and make turning gear and separating pressure holdout device interlock, so can realize inexpensive devices with simple structure.
According to device of the present invention, pivoting part and separating pressure holdout device form as one, and the separating pressure holdout device joins with the axle that drives separate roller, and its material is the oil-containing polyacetal, so can realize cost degradation with simple structure, reliability is improved simultaneously.
According to device of the present invention, paper carrying roll support unit and paper guiding parts form as one, paper injection pressure drag locking apparatus and paper guiding parts join, make the lifting of paper guiding parts, so be easy to remove paper injection pressure in the extraneous position of paper conveyance, when pulling out the paper pallet, the paper guiding parts also breaks away from, therefore can not tangle paper, the reliability of device is further enhanced.
Description of drawings
Brief Description Of Drawings is as follows:
Fig. 1 is the oblique drawing of paper supply assembly that expression relates to the paper feed main portion of the present invention the 1st embodiment;
Fig. 2 is the B-B cutaway view of Fig. 1;
Fig. 3 is paper carrying roll, paper feed roller, the gear mechanism of separate roller and the oblique drawing of pressure cancel system of paper supply assembly in the presentation graphs 1;
Fig. 4 is the oblique drawing of separate roller part and separating pressure cancel system;
Fig. 5 is the whole oblique drawing of separating pressure and the cancel system of paper carrying roll pressure;
Fig. 6 is a separating pressure cancel system planar view;
Fig. 7 is the lateral plan of the separating pressure cancel system represented among Fig. 6;
Fig. 8 is the lateral plan of paper carrying roll pressure cancel system, state when state when wherein Fig. 8 a represents the releasing of paper carrying roll pressure, Fig. 8 b are represented the paper carrying roll pressurization;
Fig. 9 is the separate roller part of the expression paper feed that relates to the present invention the 2nd embodiment and the oblique drawing of separating pressure cancel system;
Figure 10 is the partial plan layout of separating pressure cancel system among the 2nd embodiment;
Figure 11 a, Figure 11 b are the C-C section-drawings of Figure 10.
The specific embodiment
Below, with reference to the description of drawings embodiments of the invention.
Fig. 1-8 expression the present invention the 1st embodiment, the paper supply assembly A in Fig. 1 is the paper feed single-piece main portion of representing among Fig. 2 that comprises paper pallet 8.In box-shaped shell 1, be provided with paper carrying roll 2, paper feed roller 3 and separate roller 4.Paper injection arm 5 is by the axle 3a supporting (with reference to Fig. 2,3) of paper feed roller 3, axle 3a around center steering freely, by making its revolution, paper carrying roll 2 can move to Fig. 1 realize shown in position shown in position and the imaginary line.
On the other hand, as shown in Figure 4, separate roller 4 is located at the end of a 4a, and this separate roller 4 can be with the other end of axle 4a, be that bearing 4d is that fulcrum is swung at above-below direction.The axle 4b of axle 4a and setting in parallel mutually with gear is connected, will be from giving prominence to the drive transmitting imported at the exterior gear of paper supply assembly A to separate roller 4.
Integrally formed guide plate 6 on paper injection arm 5 is used for paper being provided with inclined-plane 6a (with reference to Fig. 3) in its end from paper carrying roll 2 guiding paper feed rollers 3.
Be provided with relieving rod 12 below inclined-plane 6a, it is a pivoting part.As shown in Figure 5, this relieving rod 12 is Japanese " ヘ " word shape, and there is axis of revolution 12a at its center, is being supported with freely rotating.Relieving rod 12 ends towards below be provided with pin 12b, be provided with projection 12d, protuberance 12f at the other end, on projection 12d, form inclined-plane 12e with the inclined-plane 6a subtend of above-mentioned guide plate 6.
As Fig. 5-shown in Figure 7, relieving rod 12 be provided with connecting rod 14 by, lining downside, the one end is provided with the slotted hole 14a (with reference to Fig. 6) chimeric with pin 12b.Also be provided with and be fixed on the chimeric guide groove 14b of pilot pin 17 on the housing 1, connecting rod 14 along this guide groove 14b toward Fig. 6, left and right directions shown in Figure 7 moves freely.
Also be provided with hook portion 14c on the connecting rod 14, connecting rod 14 often composed with elastic force towards the right of Fig. 6, Fig. 7 by removing spring 13.Like this, relieving rod 12 is also composed with elastic force towards anticlockwise direction (the imaginary line position of Fig. 6).Be provided with the 14d of wedge portion down in end, with the arm 15c subtend of pressure rod 15 described later with slotted hole 14a opposition side.
As Fig. 4-shown in Figure 7, below the axle 4a of separate roller 4, be provided with the pressure rod 15 of " L " word shape, its wraparound rotating shaft 15a be center steering freely, by the bearing 4c on the support 15b bolster 4a of end.Form arm 15c at other end on even keel, with the 14d of the wedge portion subtend of above-mentioned connecting rod 14.Furtherly, also be provided with hook portion 15d (with reference to Fig. 7),, make pressure rod 15 under resilient force, up push bearing 4c by the drawing of pressing spring 16.
The following describes the paper supply action of the paper feed of the 1st embodiment.
During paper feeding, paper carrying roll 2 is positioned at Fig. 2 position (imaginary line of Fig. 1), and by the elastic force of spring 5b, above-mentioned paper carrying roll 2 contacts are positioned in the top paper of the paper 9 in the paper pallet 8.By there not being graphic drive source that the axle 3a of paper feed roller is turned round towards anticlockwise direction, then also turn round with the paper feed roller 3 identical anticlockwise directions of doing by gear 7 paper carrying rolls 2, paper is sent towards paper feed roller 3.The paper that arrives paper feed roller 3 is seized on both sides by the arms by paper feed roller 3 and separate roller 4, owing to make the rotating paper feed roller 3 of anticlockwise direction, right is advanced in Fig. 2.At this moment, never graphic drive source axle drive shaft 4b, 4a and gear provided thereon, thus drive separate roller 4, it is turned round towards anticlockwise direction.
The following describes paper injection pressure, the pressurization of separating pressure, the releasing action of present embodiment.
Fig. 3-Fig. 7 and Fig. 8 b represent to be provided with the state of paper pallet 8, and relieving rod 12 overcomes from the elastic force of removing spring 13, and its protuberance 12f is pressed on the paper pallet 8.
At this moment, shown in Fig. 8 b, the inclined-plane 12e of relieving rod 12 leaves the inclined-plane 6a of guide plate 6, and paper injection arm 5 is composed with elastic force by paper injection pressing spring 5b, makes paper carrying roll 2 contact and pressurize with paper.Connecting rod 14 because of the pin 12b that is located at relieving rod 12 ends toward the left of Fig. 6, Fig. 7 to moving, the 14d of wedge portion leaves the arm 15c of pressure rod 15, the pressure rod of being composed with elastic force towards the clockwise direction of Fig. 7 owing to pressing spring 16 15 up pushes bearing 4c, makes separate roller 4 and paper feed roller 3 join.Become the state that paper injection pressure, separating pressure all are applied in, paper supply becomes possibility.
When replenishing paper etc. paper pallet 8 is pulled out, because paper pallet 8 leaves the protuberance 12f of relieving rod 12, relieving rod 12 moves to the imaginary line position of Fig. 6 because of the elastic force of removing spring 13.
At this moment, shown in Fig. 8 a, the inclined-plane 6a crimping of the inclined-plane 12e of relieving rod 12 and guide plate 6 becomes guide plate 6 and is pushed to the top state.Overcome the elastic force of paper injection pressing spring 5b and be pushed to the top with the paper injection arm 5 of guide plate 6 one, thereby paper carrying roll 2 leaves paper.Connecting rod 14 moves toward the right of Fig. 6, Fig. 7 because of the pin 12b that is located at relieving rod 12 ends.
The arm 15c of 14d of wedge portion and pressure rod 15 joins, and overcomes the elastic force of separating pressing spring 16 and makes the anticlockwise direction revolution of pressure rod 15 towards Fig. 7.Bearing 4c also descends because of support 15b, and separate roller 4 leaves paper feed roller 3.Like this, become all disarm states of paper injection pressure, separating pressure, the paper 9 in the paper pallet 8 is outside pallet is pulled to device.
Much less, the elastic force of removing spring 13 is greater than the elastic force that is formed by paper injection pressing spring 5b and separation pressing spring 16, in addition, the bed knife when not having graphic anchor fitting that paper pallet 8 is set is greater than by removing the spring 13 caused elastic forces that bar 12 is moved toward Fig. 6 imaginary line directions.
In the above-described embodiments, though pivoting part (relieving rod 12) and separating pressure holdout device (14d of wedge portion of connecting rod 14) serial verb construction are illustrated, but, the present invention is not limited to this, as long as make at least one side's interlock in pivoting part (relieving rod 12) and paper injection pressure drag locking apparatus or the separating pressure holdout device.
In above-mentioned this embodiment, owing to be provided with the paper pallet 8 that releasably is arranged on the image processing system, dispatch is positioned in the paper carrying roll 2 of paper in the paper pallet 8, the paper injection pressure device (paper injection pressing spring 5b) that makes paper carrying roll 2 and paper join and exert pressure, the paper injection pressure drag locking apparatus (inclined-plane 12e) that stops paper injection pressure, the disengagement gear that is constituted by paper feed roller 3 and separate roller 4 that is used for the paper of many ground separate discharging, what separate roller 4 and paper feed roller 3 are joined exert pressure separates pressure device (pressure rod 15, pressing spring 16), the separating pressure holdout device (14d of wedge portion of connecting rod 14) that stops separating pressure, the rotating relieving rod 12 by the operation of loading and unloading paper pallet 8, the releasing spring of when pulling out paper pallet 8 relieving rod 12 being composed with elastic force 13, make the relieving rod 12 and the linkage of at least one side's interlock of paper injection pressure drag locking apparatus or separating pressure holdout device (14d of wedge portion of connecting rod 14) (sell 12b, slotted hole 14a), therefore can with the charge and discharge operations interlock of paper pallet 8, remove paper injection pressure and separating pressure, and with miniaturization of simple structure implement device and cost degradation, paper comes off from paper pallet 8 when preventing to pull out paper pallet 8.
In addition, in above-mentioned this embodiment, be provided with the paper pallet 8 that releasably is arranged on the image processing system, dispatch is positioned in the paper carrying roll 2 of paper in the paper pallet 8, the paper injection pressure device (paper injection pressing spring 5b) that makes paper carrying roll 2 and paper join and exert pressure, the paper injection pressure drag locking apparatus (inclined-plane 12e) that stops paper injection pressure, the disengagement gear that is constituted by paper feed roller 3 and separate roller 4 that is used for the paper of many ground separate discharging, what separate roller 4 and paper feed roller 3 are joined exert pressure separates pressure device (pressure rod 15, pressing spring 16), the separating pressure holdout device (14d of wedge portion of connecting rod 14) that stops separating pressure, the rotating relieving rod 12 by the operation of loading and unloading paper pallet 8, the releasing spring of when pulling out paper pallet 8 relieving rod 12 being composed with elastic force 13, relieving rod 12 and paper injection pressure drag locking apparatus (inclined-plane 12e) are formed as one, also be provided with linkage (pin 12b, slotted hole 14a), therefore can make relieving rod 12 and separating pressure holdout device (14d of wedge portion of connecting rod 14) interlock, can realize inexpensive devices with simple structure.
The following describes the present invention the 2nd embodiment, only the part different with the 1st embodiment described.
As shown in Figure 9, relieving rod 112 roughly is " L " word shape, with the axis of revolution 112a that is in jut be center steering freely.112e, the 112f of one end of " L " word shape arm are identical with 12e, the 12f of the 1st embodiment, form the camming surface 112g that vertically extends and bend to wedge-like at the other end.Thereunder form hook portion 112h, owing to hang over the releasing spring 113 on the above-mentioned hook portion 112h, relieving rod 112 is composed with elastic force towards anticlockwise direction.It is different with the 1st embodiment that pressure rod 115 does not have the arm this point.
About the action aspect, the method that the axle 4a of separate roller 4 is descended is different with the 1st embodiment.When settling paper pallet 8, relieving rod 112 becomes Figure 11 a state, and camming surface 112g separates with axle 4a, and when pulling out paper pallet 8, camming surface 112g and axle 4a join, and shown in Figure 11 b, depress a 4a by the shape of camming surface 112g.Like this, separate roller 4 leaves paper feed roller 3, and separating pressure is disengaged.
Still can be delivered to the sort of structure occasion of a 4a pulling out under paper pallet 8 states to drive, the camming surface 112g and the axis of revolution of relieving rod 112 have slide relative, therefore, and making such as the material that the most handy sliding is good, for example oil-containing polyacetal.
In above-mentioned the 2nd embodiment, be provided with the paper pallet 8 that releasably is arranged on the image processing system, dispatch is positioned in the paper carrying roll 2 of paper in the paper pallet 8, the paper injection pressure device (paper injection pressing spring 5b) that makes paper carrying roll 2 and paper join and exert pressure, the paper injection pressure drag locking apparatus (inclined-plane 112e) that stops paper injection pressure, the disengagement gear that is constituted by paper feed roller 3 and separate roller 4 that is used for the paper of many ground separate discharging, what separate roller 4 and paper feed roller 3 are joined exert pressure separates pressure device (pressure rod 115, pressing spring 16), the separating pressure holdout device (camming surface 112g) that stops separating pressure, the rotating relieving rod 112 by the operation of loading and unloading paper pallet 8, the releasing spring of when pulling out paper pallet 8 relieving rod 112 being composed with elastic force 113, relieving rod 112 and separating pressure holdout device (camming surface 112g) are formed as one, and separating pressure holdout device (camming surface 112g) joins with the axle 4a that drives separate roller 4, its material is the oil-containing polyacetal, therefore, can realize low cost with simple structure, can improve reliability simultaneously.
In the various embodiments described above, owing to be provided with the paper pallet 8 that releasably is arranged on the image processing system, dispatch is positioned in the paper carrying roll 2 of paper in the paper pallet 8, the paper injection pressure device (paper injection pressing spring 5b) that makes paper carrying roll 2 and paper join and exert pressure, paper injection pressure drag locking apparatus (the inclined-plane 12e that stops paper injection pressure, 112e), the disengagement gear that is constituted by paper feed roller 3 and separate roller 4 that is used for the paper of many ground separate discharging, what separate roller 4 and paper feed roller 3 are joined exert pressure separates pressure device (pressure rod 15,115, pressing spring 16), separating pressure holdout device (the 14d of wedge portion of connecting rod 14 that stops separating pressure, camming surface 112g), the rotating relieving rod 12 by the operation of loading and unloading paper pallet 8,112, when pulling out paper pallet 8 to relieving rod 12,112 compose the releasing spring 13 with elastic force, 113, make relieving rod 12,112 with paper injection pressure drag locking apparatus (inclined-plane 12e, 112e) or at least one square the becoming one of separating pressure holdout device (camming surface 112g), therefore can realize inexpensive devices with simpler structure.
In the various embodiments described above, the support unit (paper injection arm 5) of supporting paper carrying roll 2 forms as one with the paper guiding parts (guide plate 6) of guiding paper, paper injection pressure drag locking apparatus (inclined-plane 12e, 112e) joins with paper guiding parts (guide plate 6), make paper guiding parts (guide plate 6) lifting, remove paper injection pressure at the extraneous location solution of paper conveyance easily, paper guiding parts when pulling out the paper pallet (guide plate 6) also breaks away from, therefore, can not tangle paper, device reliability is further enhanced.
Claims (15)
1. paper feed comprises:
Releasably be arranged on the paper pallet (8) in the image processing system;
Dispatch is positioned in the paper carrying roll (2) of paper in the paper pallet, and this paper carrying roll (2) can contact with the paper in being contained in paper pallet (8) or separate;
Be positioned at the paper feed roller (3) in paper carrying roll (2) paper feeding direction downstream;
Be oppositely arranged with paper feed roller (3), also can be in contact with it and the separate roller that separates (4), this separate roller (4) constitutes disengagement gear with paper feed roller (3), is used for the paper that many ground separate discharge;
It is characterized in that, also comprise:
The paper injection pressure device that makes paper carrying roll (2) and paper join and exert pressure;
The paper injection pressure drag locking apparatus that stops paper injection pressure;
The pressure device that separates that makes above-mentioned separate roller (4) and paper feed roller (3) join and exert pressure;
The separating pressure holdout device that stops separating pressure;
The rotating pivoting part by the operation of loading and unloading above-mentioned paper pallet (8);
When pulling out above-mentioned paper pallet above-mentioned pivoting part is composed tax with elastic force with the elastic force device;
Make the linkage of at least one side's interlock of above-mentioned pivoting part and above-mentioned paper injection pressure drag locking apparatus or separating pressure holdout device.
2. according to the paper feed described in the claim 1, it is characterized in that above-mentioned linkage makes above-mentioned pivoting part and separating pressure holdout device interlock, and above-mentioned pivoting part and above-mentioned paper injection pressure drag locking apparatus form as one.
3. according to the paper feed described in the claim 2, it is characterized in that:
Also comprise paper injection arm (5), be provided with the supported end that is rotatably mounted in the image processing system, this paper injection arm (5) can rotate around this supported end, and described paper carrying roll (2) is arranged on paper injection arm (5) and goes up an end relative with supported end;
Above-mentioned paper injection pressure device is paper injection pressing spring (5b), and it acts on the described paper injection arm (5), makes paper injection arm (5) be applied in elastic force;
Above-mentioned paper injection pressure drag locking apparatus comprises the paper injection pressure drag locking apparatus (6a) that is formed on the above-mentioned paper injection arm (5) and the paper injection pressure drag locking apparatus (12e) on the following relieving rod (12);
Above-mentioned pivoting part is relieving rod (12), and it comprises: be arranged on the axis of revolution (12a) in the relieving rod, this relieving rod can rotate around axis of revolution; Paper injection pressure drag locking apparatus (6a) on the paper injection pressure drag locking apparatus (12e), itself and described paper injection arm (5) is oppositely arranged, along with the rotation of relieving rod can or separate with paper injection pressure drag locking apparatus (6a) contact; Be positioned at the protuberance (12f) of relieving rod end, when described paper pallet (8) is put into image processing system, contact and backed down with described paper pallet side wall;
Above-mentioned separation pressure device comprises pressure rod (15) and pressing spring (16), pressure rod (15) is used for making described separate roller (4) to separate with described paper feed roller (3) or contacts, it comprises: be arranged on the axis of revolution (15a) in the described pressure rod, this pressure rod can rotate around axis of revolution; Be formed on the support (15b) at pressure rod (15) one end places, make the contact of separate roller (4) and paper feed roller (3) along with the rotation of pressure rod or separate; Pressing spring (16) acts on the described pressure rod, makes described pressure rod be applied in elastic force;
Above-mentioned separating pressure holdout device is the wedge portion (14d) of connecting rod (14), and connecting rod (14) one ends are connected with described relieving rod (12), and the other end acts on the described pressure rod (15) separably;
Above-mentioned tax is to remove spring (13) with the elastic force device, and it acts on the described connecting rod (14), makes described connecting rod (14) be applied in elastic force.
Above-mentioned linkage comprises pin (12b) that is located at relieving rod (12) end and the slotted hole (14a) that is located at connecting rod (14) one ends, above-mentioned pin (12b) and slotted hole (14a) tabling.
4. according to the paper feed described in the claim 3, it is characterized in that described paper injection pressing spring (5b) applies elastic force along the direction that described paper carrying roll (2) is contacted with paper.
5. according to the paper feed described in the claim 4, it is characterized in that, described releasing spring (13) acts on the described relieving rod (12) through described connecting rod (14), paper injection pressure drag locking apparatus (12e) on the relieving rod (12) is contacted with paper injection pressure drag locking apparatus (6a) on the paper injection arm (5), described connecting rod (14) is contacted with described pressure rod (15).
6. according to the paper feed described in the claim 3, it is characterized in that described pressing spring (16) acts on the described pressure rod (15), described separate roller (4) is contacted with paper feed roller (3).
7. according to the paper feed described in the claim 6, it is characterized in that the elastic force of described releasing spring (13) is greater than the elastic force of paper injection pressing spring (5b) and described pressing spring (16) generation.
8. according to the paper feed described in the claim 1, it is characterized in that the paper injection pressure drag locking apparatus (6a) on the paper injection pressure drag locking apparatus (12e) of described relieving rod (12) and the paper injection arm (5) is the inclined-plane.
9. paper feed comprises:
Releasably be arranged on the paper pallet (8) in the image processing system;
Dispatch is positioned in the paper carrying roll (2) of paper in the paper pallet, and this paper carrying roll (2) can contact with the paper in being contained in paper pallet (8) or separate;
Be positioned at the paper feed roller (3) in paper carrying roll (2) paper feeding direction downstream;
Be oppositely arranged with paper feed roller (3), also can be in contact with it and the separate roller that separates (4), this separate roller (4) constitutes disengagement gear with paper feed roller (3), is used for the paper that many ground separate discharge;
It is characterized in that, also comprise:
The paper injection pressure device that makes paper carrying roll (2) and paper join and exert pressure;
The paper injection pressure drag locking apparatus that stops paper injection pressure;
The pressure device that separates that makes above-mentioned separate roller (4) and paper feed roller (3) join and exert pressure;
The separating pressure holdout device that stops separating pressure;
The rotating pivoting part by the operation of loading and unloading above-mentioned paper pallet (8);
When pulling out above-mentioned paper pallet above-mentioned pivoting part is composed tax with elastic force with the elastic force device;
At least one side of above-mentioned pivoting part and above-mentioned paper injection pressure drag locking apparatus or separating pressure holdout device is become one.
10. according to the paper feed described in the claim 9, it is characterized in that, above-mentioned pivoting part and above-mentioned separating pressure holdout device are formed as one, above-mentioned separating pressure holdout device joins with the axle that drives above-mentioned separate roller, and its material is the oil-containing polyacetal.
11. the paper feed according to described in the claim 10 is characterized in that:
Also comprise paper injection arm (5), be provided with the supported end that is rotatably mounted in the image processing system, this paper injection arm (5) can rotate around this supported end, and described paper carrying roll (2) is arranged on paper injection arm (5) and goes up an end relative with supported end;
Above-mentioned paper injection pressure device is paper injection pressing spring (5b), and it acts on the described paper injection arm (5), makes paper injection arm (5) be applied in elastic force;
Above-mentioned paper injection pressure drag locking apparatus comprises the paper injection pressure drag locking apparatus (6a) that is formed on the above-mentioned paper injection arm (5) and the paper injection pressure drag locking apparatus (112e) on the following relieving rod (112);
Above-mentioned pivoting part is relieving rod (112), and it comprises: be arranged on the axis of revolution (112a) in the relieving rod, this relieving rod can rotate around axis of revolution; Paper injection pressure drag locking apparatus (6a) on the paper injection pressure drag locking apparatus (112e), itself and described paper injection arm (5) is oppositely arranged, along with the rotation of relieving rod can or separate with paper injection pressure drag locking apparatus (6a) contact; Be positioned at the protuberance (112f) of relieving rod end, when described paper pallet (8) is put into image processing system, contact and backed down with described paper pallet side wall; The camming surface (112g) that extends out from described relieving rod, when described paper pallet (8) when image processing system takes out, this camming surface (112g) cooperates with separate roller (4), and separate roller (4) is separated with paper feed roller (3);
Above-mentioned separation pressure device comprises pressure rod (115) and pressing spring (16), pressure rod (115) is used for making described separate roller (4) to contact with described paper feed roller (3), it comprises: be arranged on the axis of revolution (15a) in the described pressure rod, this pressure rod can rotate around axis of revolution; Be formed on the support (15b) at pressure rod (115) one end places, it cooperates with separate roller (4), and separate roller (4) is contacted with paper feed roller (3); Pressing spring (16) acts on the described pressure rod, makes described pressure rod be applied in elastic force;
Above-mentioned tax is to remove spring (113) with the elastic force device, and it acts on the described relieving rod (112), makes described relieving rod (112) be applied in elastic force.
12. the paper feed according to described in the claim 11 is characterized in that, described paper injection pressing spring (5b) applies elastic force along the direction that described paper carrying roll (2) is contacted with paper.
13. according to the paper feed described in the claim 12, it is characterized in that, described releasing spring (113) acts on the described relieving rod (112), paper injection pressure drag locking apparatus (112e) on the relieving rod (112) is contacted with paper injection pressure drag locking apparatus (6a) on the paper injection arm (5), and described camming surface (112g) is separated separate roller (4) and paper feed roller (3) simultaneously.
14. the paper feed according to described in the claim 11 is characterized in that, described pressing spring (16) acts on the described pressure rod (115), and described separate roller (4) is contacted with paper feed roller (3).
15. according to the paper feed described in claim 1 or 9, it is characterized in that, the support unit of the above-mentioned paper carrying roll of supporting and the paper guiding parts of guiding paper are formed as one, and above-mentioned paper injection pressure drag locking apparatus and above-mentioned paper guiding parts join, and make the lifting of above-mentioned paper guiding parts.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP04911797A JP3479429B2 (en) | 1997-03-04 | 1997-03-04 | Paper feeder |
| JP049117/97 | 1997-03-04 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1192421A CN1192421A (en) | 1998-09-09 |
| CN1092126C true CN1092126C (en) | 2002-10-09 |
Family
ID=12822129
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN98106001A Expired - Lifetime CN1092126C (en) | 1997-03-04 | 1998-03-04 | Method and device for paper feeding |
Country Status (3)
| Country | Link |
|---|---|
| JP (1) | JP3479429B2 (en) |
| KR (1) | KR100286805B1 (en) |
| CN (1) | CN1092126C (en) |
Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8123211B2 (en) * | 2008-07-10 | 2012-02-28 | Kabushiki Kaisha Toshiba | Pickup roller lifting and lowering mechanism in paper feeding unit and image forming apparatus including the pickup roller lifting and lowering mechanism |
| CN102020126B (en) * | 2009-09-11 | 2012-12-05 | 致伸科技股份有限公司 | Paper feeding device with paper holding/releasing structure |
| JP2011173681A (en) | 2010-02-24 | 2011-09-08 | Brother Industries Ltd | Sheet feeding device and image forming apparatus |
| JP5229266B2 (en) | 2010-04-28 | 2013-07-03 | ブラザー工業株式会社 | Paper feeding device and recording device |
| JP5909440B2 (en) * | 2012-12-28 | 2016-04-26 | 京セラドキュメントソリューションズ株式会社 | Sheet conveying apparatus and image forming apparatus provided with the same |
| JP6120788B2 (en) * | 2014-02-25 | 2017-04-26 | 京セラドキュメントソリューションズ株式会社 | Sheet feeding device and image forming apparatus |
| JP6870492B2 (en) * | 2017-06-22 | 2021-05-12 | 京セラドキュメントソリューションズ株式会社 | Sheet feeding unit and image forming device equipped with it |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3525600A1 (en) * | 1985-07-18 | 1987-01-22 | Srka Suedd Spezialdruckerei He | Feed device of a high-speed printer |
| DE4221844A1 (en) * | 1991-07-05 | 1993-01-07 | Asahi Optical Co Ltd | Manual single sheet feed cassette for printer, copier, or facsimile - has cover that can be tilted to allow manual insertion of sheet from top of stack to engage feed roller |
| EP0372294B1 (en) * | 1988-11-25 | 1995-02-01 | Mita Industrial Co., Ltd. | Paper feeding device |
| EP0514179B1 (en) * | 1991-05-17 | 1996-11-13 | Xerox Corporation | Sheet handling assembly |
-
1997
- 1997-03-04 JP JP04911797A patent/JP3479429B2/en not_active Expired - Lifetime
-
1998
- 1998-03-04 CN CN98106001A patent/CN1092126C/en not_active Expired - Lifetime
- 1998-03-04 KR KR1019980007156A patent/KR100286805B1/en not_active IP Right Cessation
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3525600A1 (en) * | 1985-07-18 | 1987-01-22 | Srka Suedd Spezialdruckerei He | Feed device of a high-speed printer |
| EP0372294B1 (en) * | 1988-11-25 | 1995-02-01 | Mita Industrial Co., Ltd. | Paper feeding device |
| EP0514179B1 (en) * | 1991-05-17 | 1996-11-13 | Xerox Corporation | Sheet handling assembly |
| DE4221844A1 (en) * | 1991-07-05 | 1993-01-07 | Asahi Optical Co Ltd | Manual single sheet feed cassette for printer, copier, or facsimile - has cover that can be tilted to allow manual insertion of sheet from top of stack to engage feed roller |
Also Published As
| Publication number | Publication date |
|---|---|
| JP3479429B2 (en) | 2003-12-15 |
| JPH10245131A (en) | 1998-09-14 |
| CN1192421A (en) | 1998-09-09 |
| KR19980079900A (en) | 1998-11-25 |
| KR100286805B1 (en) | 2001-04-16 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20021009 |