CN101276176B - Feeding device and image forming apparatus - Google Patents

Feeding device and image forming apparatus Download PDF

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Publication number
CN101276176B
CN101276176B CN2008100900419A CN200810090041A CN101276176B CN 101276176 B CN101276176 B CN 101276176B CN 2008100900419 A CN2008100900419 A CN 2008100900419A CN 200810090041 A CN200810090041 A CN 200810090041A CN 101276176 B CN101276176 B CN 101276176B
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CN
China
Prior art keywords
paper
pressing plate
supply
held
supply arrangement
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2008100900419A
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Chinese (zh)
Other versions
CN101276176A (en
Inventor
木村正治
谷口匡
藤田正彦
桂典史
大石真嗣
浅川昌也
深田泰章
难波丰明
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Sharp Corp
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Sharp Corp
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Filing date
Publication date
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Publication of CN101276176A publication Critical patent/CN101276176A/en
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Publication of CN101276176B publication Critical patent/CN101276176B/en
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H3/00—Separating articles from piles
    • B65H3/46—Supplementary devices or measures to assist separation or prevent double feed
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/08—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device
    • B65H1/14—Supports or magazines for piles from which articles are to be separated with means for advancing the articles to present the articles to the separating device comprising positively-acting mechanical devices
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H1/00—Supports or magazines for piles from which articles are to be separated
    • B65H1/26—Supports or magazines for piles from which articles are to be separated with auxiliary supports to facilitate introduction or renewal of the pile
    • B65H1/266—Support fully or partially removable from the handling machine, e.g. cassette, drawer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2405/00—Parts for holding the handled material
    • B65H2405/10—Cassettes, holders, bins, decks, trays, supports or magazines for sheets stacked substantially horizontally
    • B65H2405/11—Parts and details thereof
    • B65H2405/115—Cover

Abstract

A feeding device according to the present invention holds a pile of sheets of paper in it. Feed force so acts selectively on a specified region of the upper side of the held top sheet as to feed the held sheets one after one in a feed direction. The feeding device includes a flat press plate and a support. The press plate is not smaller in the feed direction and the cross directions perpendicular to the feed direction than the maximum size of the sheets which can be held in the main body. The press plate is not larger in the feed and cross directions than the inner size of the main body. The press plate has a first opening formed over the specified region. The press plate is supported vertically movably above the held sheets by the support.

Description

Supply arrangement and image processing system
Background technology
Image processing system or another Device for treating paper comprise supply arrangement (feeding device), and supply arrangement comprises feed cassette.Feed cassette holds plurality of sheets of paper and opens.The paper supply arrangement is supplied with the paper that holds as requested seriatim.Usually, the paper supply arrangement of Device for treating paper from feed cassette with downward sequentially feeding paper.
Before the feed cassette of Device for treating paper held paper, they were wound onto in the airtight material, so that have low humidity.If this device is laid in a humid environment, the paper that is contained in the feed cassette absorbs the moisture and the too wet that may become.In this case, the top paper in the feed cassette, it is easy to be exposed to moist environment most, full out absorbs moisture, and the order of falling below the bottom paper in the box absorbs moisture.
When the top paper moisturized, its surface nature changed, thereby its frictional resistance reduces.This makes this top paper be easy to misdelivery.To the paper (printing paper) of coating, because the SiO of the coating on the paper 2Or other bleach is than the cellulose of paper or more moisture absorption of composition in addition, and this phenomenon takes place significantly.The paper of coating is generally used for coloured image formation etc.
The conventional feed cassette of image processing system is equipped with thermal source, with the dehumidifying of the paper in the box, is misdelivered owing to become wet thereby prevent them.Dehumidifying by the thermal source consumption that not only increases electric power, and make and be difficult to control thermal value.If thermal source is energized the heat that produces constant basis, depend on that environment that the quantity of paper in the feed cassette or type, this device are laid and environment may change etc., the quantity of heat may be too much.The heat of crossing volume makes paper become dry, thereby they may be out of shape or variable color.
JP H05-188715A discloses inflatable and contractile lid, respectively is used for covering the paper that feed cassette holds.Each lid is set to prevent that foreign matter from entering relevant box and preventing fault during supplying with paper from box.Exist at interval between the top paper in each lid and relevant box.This makes some lids can not prevent that relevant top paper is exposed to environment at interval.Therefore, can not prevent reliably that paper from becoming wet.
Summary of the invention
The object of the present invention is to provide a kind of feed cassette, even the number of paper that is contained in the box changes, the top paper that described feed cassette also prevents to be contained in wherein is exposed to environment, and described feed cassette prevents paper because change is wet and misdelivered.Another object of the present invention is to provide the image processing system that is equipped with this feed cassette.
Holding plurality of sheets of paper therein according to feed cassette of the present invention opens.Supply power optionally puts on the specific region of upside of the top paper that is held, thereby supplies with the paper that is held seriatim in a direction of feed.Feed cassette comprises flat clamp and support member.Pressing plate is in the direction of the supply and be not less than the full-size that can be contained in the paper in the main body in a lateral direction perpendicular to the direction of the supply.Pressing plate is in the direction of the supply and be not more than the inside dimension of main body in a lateral direction.Pressing plate has first opening that is formed on the top, specific region.But pressing plate by the support member vertical moving be supported on the paper that holds.
Description of drawings
Fig. 1 is the schematic elevational view according to the image processing system of the embodiment of the invention;
Fig. 2 is the side cross-sectional view of the feed cassette of this device;
Fig. 3 is the vertical view of the pressing plate of feed cassette;
Fig. 4 A and 4B are the side cross-sectional view of feed cassette, show when the number of paper that holds in the box changes the displacement how angledly of the parts of pressing plate; With
Fig. 5 is the vertical view of the pressing plate of feed cassette according to another embodiment of the present invention.
Embodiment
With reference to figure 1, will describe image processing system 100 below in detail according to the embodiment of the invention.Device 100 mainly comprises scanner 200, image forming part 300 and paper supply arrangement 400.
Scanner 200 comprises automatic document feeder 201, the first original copy platform 202, the second original copy platform 203, the first catoptron base portion 204, the second catoptron base portion 205, lens 206 and charge (CCD) 207.
Document feeder 201 seriatim supplies to exit tray 212 with original copy from original copy pallet 211 via the second original copy platform 203.Document feeder 201 is supported for the upside that covers the first original copy platform 202 pivotly at its trailing edge place.Leading edge by rising document feeder 201 can manually be placed on original copy on the first original copy platform 202 to expose the upside of this platform.
Original copy platform 202 and 203 is hard glass plates.Catoptron base portion 204 and 205 can flatly move below original copy platform 202 and 203.The translational speed of the second catoptron base portion 205 be the first catoptron base portion 204 translational speed 1/2.The first catoptron base portion, the 204 carrying light source and first catoptrons.The second catoptron base portion, 205 carrying second catoptron and the 3rd catoptrons.
Supply to the image on the original copy of the second original copy platform, 203 tops by document feeder 201, read with the first catoptron base portion 204 that is parked under this platform.On the second original copy platform 203 times, the light source on the first catoptron base portion 204 is to the original copy emission light by this platform.Light by this original copy reflection is reflected to the second catoptron base portion 205 by first catoptron on the first catoptron base portion 204 subsequently.
Be placed on the image on the original copy on the first original copy platform 202, be used in the catoptron base portion 204 and 205 that moves horizontally under this platform and read.On the first original copy platform 202 times, the original copy emission light of the light source on the first catoptron base portion 204 on this platform.Light by this original copy reflection is reflected to the second catoptron base portion 205 by first catoptron on the first catoptron base portion 204 subsequently.
No matter whether document feeder 201 uses, the light that is reflected by this original copy incides on the CCD207 via lens 206 by the second and the 3rd catoptron on the second catoptron base portion 205, and it is constant that optical path length keeps.
CCD207 is based on the light quantity output electric signal by this original copy reflection.This electric signal is input in the image forming part 300 as view data.
Image forming part 300 comprises treating stations 30.Treating stations 30 comprises photosensitive drums 31, charger 32, exposure sources 33, developing apparatus 34, transfer belt 35, drum clearer 36 and fixation facility 37.
Photosensitive drums 31 has the photographic layer on the cylindrical surface that is formed on it, and rotates with the clockwise direction of Fig. 1.
Charger 32 charges to specific electromotive force equably with the cylindrical surface of photosensitive drums 31.Charger 32 can or have roller or the contact type charger of brush for contact-less charger.
Exposure sources 33 is based on the cylindrical surface of using rayed photosensitive drums 31 from the view data of scanner 200.Light conductivity in the photographic layer of drum 31 forms electrostatic latent image on the illuminated surface of drum 31.Exposure sources 33 axially scans the drum surface of drum 31 with the laser beam with the view data modulation by means of polygonal mirror.Exposure sources 33 can replace with the exposure sources with EL, led array or other luminaire.
Developing apparatus 34 is supplied to the cylindrical surface of photosensitive drums 31 with toner, thereby electrostatic latent image is converted to visual toner image.
Transfer belt 35 is in photosensitive drums 31 lower roll cocycles running and have about 1 * 10 9With 1 * 10 13Resistivity between the Ω cm.
Transfer roll 35A is supported on transfer belt 35 inboards, and is biased into the cylindrical surface crimping with photosensitive drums 31.Transfer belt 35A is corresponding to transfer apparatus of the present invention.With transfer voltage to putting on transfer roll 35A, so that form transfer electric field in the transfer area 35B on the feed path 11 below drum 31.
Be transferred on the paper by the crack between drum and the transfer belt 35 by the toner image of photosensitive drums 31 carrying.
Band clearer 35C removes toner, paper dirt and other dust that sticks on the transfer belt 35.
Be transferred to behind the paper that photosensitive drums is passed through for 31 times from the part on drum surface at toner image, drum clearer 36 is removed left toner on this part on drum surface.
Treating stations 30 also comprises thermistor 39, and thermistor 39 is corresponding to temperature sensor of the present invention, with the temperature in the sensing apparatus 100.Thermistor 39 is arranged in the airflow of the downstream of fixation facility 37 by fan 40 generations of device 100.Thermistor 39 can sensing apparatus temperature in 100, described temperature raises by the heat from fixation facility 37 radiation.
Fixation facility 37 comprises warm-up mill 37A and pressure roller 37B.Warm-up mill 37A is equipped with heating lamp therein, with it is heated to can fusion by the toner on the paper of the roll gap between roller 37A and the 37B temperature.Pressure roller 37B is biased into the crimping with warm-up mill 37A, thereby pushes the paper by roll gap.As a result, be transferred to toner image photographic fixing thereon on this paper.
Paper supply arrangement 400 comprises feed cassette 401-404 and manual supply tray 405.Each of feed cassette 401-404 held the paper (recording medium) of a size.The size that supply tray 405 supports are of little use or the paper of quality.
Paper supply arrangement 400 is supplied with paper seriatim from one of feed cassette 401-404 or manual supply tray 405.The paper of supplying with from supply arrangement 400 supplies to treating stations 30 by feed path 11 then.
With reference to figure 2, supply arrangement of the present invention is that feed cassette 403 comprises main body 1, back up pad 2, pivot plate 3, rear end guide 4, a pair of front end guide 5, an opposite side guide 6 and pressing plate 7.
Box body 1 is the open-topped rectangular parallelepiped of hollow and holds plurality of sheets of paper therein and open.Back up pad 2, pivot plate 3, end guide 4 and 5, limit guide 6 and pressing plate 7 are positioned at box body 1.
Feed mechanism 410 is supplied with the paper in the box body 1 seriatim with downward order to supply with direction X.Feed mechanism 410 comprises pick-up roller 411, donor rollers 412, separating plate 413 and is with 414.Donor rollers 412 is rotated and rotating band 414 with the counter clockwise direction of Fig. 2.With 414 pick-up roller 411 is rotated with identical direction.
When feed mechanism 410 is supplied with paper, pick-up roller 411 around donor rollers 412 to bottom offset, so that the specific region of the upside of the top paper in the cylindrical surface of pick-up roller 411 and the box body 1 contacts.Pick-up roller 411 rotates, and its cylindrical surface contacts with the top paper, applies supply power on paper, so that to supply with direction X the crack of paper between donor rollers 412 and separating plate 413 supplied with.
If pick-up roller 411 is once supplied with two or more paper, only the top paper passes through the crack between donor rollers 412 and the separating plate 413, and other paper stops by the friction force between its (they) and the plate 413.
Back up pad 2 is shorter than the minimum dimension that can be contained in the paper in the box body 1 on direction of the supply X.Back up pad 2 2A place in its back-end is supported on the bottom of box body 1 pivotly.Paper is accommodated in the box body 1, and bottom paper is positioned partially on the back up pad 2.
Pivot plate 3 is positioned at back up pad 2 times, and is supported on pivotly on the bottom of box body 1 at its front end 3A place.From the torque of motor (not shown) around the front end 3A of pivot plate with direction C biased pivotable plate 3 so that the rear end of pivot plate 3 with back up pad 2 around the rear end 2A of back up pad with opposite direction D displacement.Can use spring to replace this motor.
Rear end guide 4 can be on the bottom of box body 1 supplying with direction X and opposite direction to-and-fro movement, and keep in touch, thereby regulate the position of paper with the paper rear end in the box body.
Front end guide 5 can vertically move in box body 1.Before the head of guide 5 keep in touch with the anterior angle upside of top paper in the box body 1.Front end guide 5 separates the top paper with other paper in the box body 1.
Side guide 6 can be with transverse direction Y (as Fig. 3) to-and-fro movement perpendicular to direction of the supply X on the bottom of box body 1, and keeps in touch with the side of paper in the box body, thereby regulates the position of paper.
Rear end guide 4 and side guide 6 can be according to the size of paper in the box body at the bottom of box body 1 top offsets.
With reference to figure 3, pressing plate 7 is an essentially rectangular peace.Pressing plate 7 is not less than the full-size that can be contained in the paper in the box body 1 on direction X and Y.Pressing plate 7 is not more than the inside dimension of box body 1 on above-mentioned direction.Pressing plate 7 has the first opening 7B, support openings 7C, a pair of second opening 7D and a pair of the 3rd opening 7E.
The first opening 7B forms above the upside specific region of the top of box body 1 paper.When pick-up roller 411 centered on donor rollers 412 to bottom offset, pick-up roller 411 was by the first opening 7B, so that the cylindrical surface of this roller contacts with the described zone of top paper.Because the roller surface contacts with the top paper, the rotation of pick-up roller 411 applies supply power on paper.
Rear end guide 4 is vertically by support openings 7C, and this has limited moving forward and backward of pressing plate 7, and this plate vertically moves in box body 1.The top of rear end guide 4 exposes, so that this guide is easy to extract by support openings 7C.Therefore, pressing plate 7 can upwards be removed from rear end guide 4.Rear end guide 4 is as support member of the present invention.
Replacedly, box body 1 can be equipped with support member on the one side, but the part of pressing plate 7 and this support member vertical moving engage.In this case, rear end guide 4 is not as support member.
Each of front end guide 5 can vertically move through one of second opening 7D.Each of side guide 6 vertically extends through one of the 3rd opening 7E.
When pressing plate 7 when box body 1 is removed, paper is placed in the box body.Subsequently, pressing plate 7 is placed on the top paper in the box body 1, and support openings 7C engages with rear end guide 4.This allows pressing plate 7 vertically to move.Do not have external force to be applied on the pressing plate 7, the weight of this plate makes it rest on the paper of top.
Except the place that paper exposes by opening 7B-7E, the top paper in the box body 1 covers by pressing plate 7.As a result, the roughly Zone Full of top paper is not exposed to environment.This prevents that the top paper from becoming wet and making pick-up roller 411 to skid and misdeliver paper in wet environment on this paper.
Along with the number of paper in the box body 1 reduces, back up pad 2 makes the front portion of paper tilt with this direction with direction D (Fig. 2) displacement.If it is flat that pressing plate 7 keeps, it may be not with box body 1 in the upside of top paper closely contact.
Pressing plate 7 comprises the bend 7A that extends across pressing plate with transverse direction Y.Bend 7A is divided into front and rear with pressing plate 7, and the angle between the front and rear can change.Even when the anterior inclination angle of the paper in the box body 1 changed, shown in Fig. 4 A and 4B, the extensive area of the top paper that pressing plate 7 and box body are interior closely contacted.
Bend 7A is made by the flexible material that has length-specific on direction X.Elastic component can adhere to the downside of pressing plate 7, so that this plate can cover the top paper in the box body 1 more reliably.
Pressing plate 7 can be made by transparent material.This makes can visually observe paper type in the box body 1 and state and need not remove pressing plate 7.
Fig. 5 shows the pressing plate 71 of feed cassette according to another embodiment of the present invention.Pressing plate 71 has a fore edge 71B and an offside otch 71E, and it corresponds respectively to the first opening 7B and the 3rd opening 7E of pressing plate 7.
Two embodiment have adopted the image processing system of illustration Device for treating paper to describe.Yet the present invention can be applied to hold other Device for treating paper that plurality of sheets of paper is opened similarly except that image processing system.
Though the present invention so describes, obvious the present invention is modification in many ways.This modification does not think to depart from the spirit and scope of the present invention, and all this modifications that it will be apparent to those skilled in the art are included in the scope of following claims.

Claims (7)

1. supply arrangement comprises:
Main body is used for holding plurality of sheets of paper therein and opens;
Wherein, supply power optionally is applied on the upside specific region of the top paper that is held, thereby supplies with the paper that is held seriatim in a direction of feed;
Pressing plate is configured as tabular, is not less than the full-size that can be contained in the paper in the described main body in the direction of the supply with perpendicular to the length in a lateral direction of the direction of the supply, and is not more than the inside dimension of described main body;
Described pressing plate has first opening that forms above described specific region; With
Support member is supported on the paper top that is held with described pressing plate, so that pressing plate can vertically move,
Wherein said pressing plate comprises bend, and described bend extends across this pressing plate at the pars intermedia upper edge of the direction of the supply of pressing plate horizontal direction.
2. supply arrangement according to claim 1, wherein said pressing plate can upwards be removed from described support member.
3. supply arrangement according to claim 1, wherein said support member are the upstream mobile in a direction of feed rear end guides of paper that restriction is held.
4. supply arrangement according to claim 1 also comprises:
The front end guide is used for contacting with the forward corner in the downstream in a direction of feed of the upside of the top paper that is held;
Described pressing plate has second opening, and described front end guide is vertically by described second opening.
5. supply arrangement according to claim 1 also comprises:
The side guide is used for contacting with the side parallel with the direction of the supply of the paper that is held;
Described pressing plate has the 3rd opening, and described side guide is vertically by described the 3rd opening.
6. supply arrangement according to claim 1, wherein said pressing plate is made by transparent material.
7. an image processing system comprises the image forming part that is used for forming image on paper, and described paper is from supplying with according to any one described supply arrangement of claim 1-6.
CN2008100900419A 2007-03-29 2008-03-31 Feeding device and image forming apparatus Expired - Fee Related CN101276176B (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP2007-088003 2007-03-29
JP2007088003A JP2008247503A (en) 2007-03-29 2007-03-29 Paper feeding cassette and image forming device

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Publication Number Publication Date
CN101276176A CN101276176A (en) 2008-10-01
CN101276176B true CN101276176B (en) 2011-05-04

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JP (1) JP2008247503A (en)
CN (1) CN101276176B (en)

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Publication number Priority date Publication date Assignee Title
US9965751B1 (en) 2016-12-29 2018-05-08 Capital One Services, Llc Mobile device multi-feed scanner

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1572684A (en) * 2003-06-10 2005-02-02 三洋电机株式会社 Paper feed tray and printer furnished with the tray
CN1661486A (en) * 2004-02-27 2005-08-31 佳能株式会社 Sheet feeding apparatus and sheet processing apparatus

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2726223A1 (en) * 1994-10-28 1996-05-03 Canon Kk SHEET LOADING CASSETTE COMPRISING A LIFTING PLATE AND A LID HAVING A PUSH AREA FOR LOWERING THE LIFTING PLATE
JP4021278B2 (en) * 2002-08-09 2007-12-12 株式会社湯山製作所 Automatic paper feeder
JP4238994B2 (en) * 2003-12-26 2009-03-18 ブラザー工業株式会社 Sheet-like member conveying apparatus and information processing apparatus having the conveying apparatus

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1572684A (en) * 2003-06-10 2005-02-02 三洋电机株式会社 Paper feed tray and printer furnished with the tray
CN1661486A (en) * 2004-02-27 2005-08-31 佳能株式会社 Sheet feeding apparatus and sheet processing apparatus

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JP2008247503A (en) 2008-10-16
US20080237978A1 (en) 2008-10-02

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Granted publication date: 20110504