CN101556453B - Developing cartridge of image forming apparatus - Google Patents
Developing cartridge of image forming apparatus Download PDFInfo
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- CN101556453B CN101556453B CN 200910145258 CN200910145258A CN101556453B CN 101556453 B CN101556453 B CN 101556453B CN 200910145258 CN200910145258 CN 200910145258 CN 200910145258 A CN200910145258 A CN 200910145258A CN 101556453 B CN101556453 B CN 101556453B
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Abstract
A developer cartridge provided in an image-forming device has a developer side casing that includes a toner-accommodating chamber and a developing chamber; and a plate wall disposed in the developing chamber for partitioning a thickness-regulating blade from the toner-accommodating chamber. When a thickness-regulating blade scrapes excess charged toner off the developing roller, the plate wall prevents this charged toner from returning to the toner-accommodating chamber. A flexible wiper for cleaning toner detection windows is attached to an agitator for stirring toner in the toner-accommodating chamber via a fixing member. The fixing member includes a support plate and a gripping plate disposed opposite each other with a slit formed therebetween. The wiper is inserted into the slit and isfixed to the fixing member when a boss protruding from a restricting plate becomes inserted into a through-hole formed in the wiper.
Description
The application is dividing an application of following application,
The applying date of original application: on April 26th, 2006,
The application number of original application: 2006100792754,
The denomination of invention of original application: the developer box that is used for image processing system.
Quoting alternately of related application
The application requires the Japanese patent application 2005-128502 of proposition on April 26th, 2005, the Japanese patent application 2005-138729 that on May 11st, 2005 proposed, the Japanese patent application 2005-164321 that the Japanese patent application 2005-140893 that on May 13rd, 2005 proposed and on June 3rd, 2005 propose is as right of priority, and its content here is incorporated among the application by reference.
Technical field
A kind of image processing system of relate generally to of the present invention, for example laser printer more particularly, relates to the developer box and the handle box that are installed on the image processing system.
Background technology
Conventional electrofax figure forms device, as adopt laser printer non magnetic, the unimodule developing method, and generally comprise photosensitive drum, form electrostatic latent image thereon, with be used for triboelectric charging and be photosensitive drum supply toner so that at the developer box of photosensitive drum formation electrostatic latent image.
A kind of like this developer box that Japanese patent application No. 2000-275948 discloses comprises be used to the toner container cavity that holds toner, is used for the development chamber that holds feed rolls, developer roll and thickness adjustment sheet.Partition wall forms uncoveredly therein, and developer box is divided into toner container cavity and development chamber.
Such developer box also comprises and is provided in the stirrer that is used for stirring toner in it in the toner container cavity.The toner that stirrer stirs is by uncoveredly discharging to the development chamber of forming at partition wall.When toner between two rollers during by triboelectric charging, feed rolls with the color powder feeding of discharging to developer roll.The thickness adjustment sheet strikes off the extra charged toner of transmitting at developer roll, thereby carries the developer thin layer on the surface of developer roll.
The developing apparatus that the Japanese patent application literary composition 2000-250296 of this shop discloses comprises that the relative both sides that are arranged on the toner container cavity are for detection of the transparency window that remains toner.Cleaning element further is arranged on and is used for clean window on the stirrer.
The developer box apparatus that Japanese patent application No. 2005-24811 discloses has the support section of hollow slot part and restricted part to support the axle of stirrer, and this groove partly has guide portion (guiding portion) and deep (deepest portion).When stirrer was installed, the axle of stirrer was booted down to deep along the guide portion of groove, passes restricted part, was limited part in deep and kept (maintain).
The developer box of above-mentioned routine has multiple shortcoming.A shortcoming is that the thickness adjustment sheet is contained in the development chamber from the unnecessary charged toner that developing roller surface strikes off, and sometimes gets back to the toner container cavity.Because when the ratio of first charged toner and uncharged toner increased, when to the toner triboelectric charging between feed rolls and the developer roll, charging control difficult caused picture quality to reduce.Therefore, wish that many and fast as far as possible supply has been used for the toner of development by first charging.
Another shortcoming is that the member amount that requirement is used for cleaning element is fixed in stirrer increases, so that installation process is more complicated.Further,, be difficult to cleaning element is peeled off to recycle from stirrer fixedly the time by double-side band when cleaning element.
Have above-mentioned structure for supporting stirrer shaft, when slipping over restricted part, have because when shaft flexing, large load is loaded the danger that axle may be destroyed.
The another one shortcoming is uncovered by forming at the shell of above-mentioned developer box, is used for exposing (exposing) developer roll, uncovered neighboring inevitable a little less than.Therefore, when installing or removing developer box, when the user clamps near uncovered shell, casing deformation (deflection), this may cause the destruction of developer roll or force the space that toner forms between developer roll and shell out.
Summary of the invention
Consider aforementioned content, the purpose of this invention is to provide the developer box that can prevent that picture quality from reducing.
Another object of the present invention provides has the developer box that is fixed to the cleaning element of agitating member by simple structure.
Of the present invention again when another purpose provides in stirrer is installed to developer box, reduce the developer box of the risk of damaging stirrer shaft.
Another object of the present invention has provided to open wide on it and mouthful has been reinforced, and keeps reliably the shell in the accurate space on developer roll and uncovered limit.
Another object of the present invention provides a kind of handle box and the image processing system of one developer box in achieving the above object at least is installed.
Above and other reaches by developer box, and developer box comprises:
The developer-accommodating chamber of receiving photographic developer;
The developer that carries developer carries member;
To be contained in the developer charging in the developer-accommodating chamber and be fed to the delivery member that developer carries member;
Carry the member pressure contact in contact portion and developer, carry the thickness adjustment means of the thickness of the toner that carries on the member to be adjusted in developer;
Bottom and top are arranged, and be disposed in the wall between developer-accommodating chamber and the thickness adjustment means, the top of wall is located in the position than the more close delivery member in bottom of wall, wall separates the thickness adjustment means from the developer-accommodating chamber, so that the distance between delivery member and the wall top is shorter than delivery member and carries distance between the contact portion that member contacts at thickness adjustment means and developer.
Have such structure, the wall that is arranged between developer-accommodating chamber and the thickness adjustment means separates the thickness adjustment means from the developer-accommodating chamber.Wall is arranged to distance between delivery member and the wall top and is shorter than delivery member and carries distance between the contact portion that member contacts at thickness adjustment means and developer.Therefore, when the thickness adjustment means unnecessary developer being carried member from developer strikes off, when being carried at developer and carrying development thickness on the member with adjusting, remain in developer between thickness adjustment means and the wall and can be supplied to again developer and carry member, and be conditioned by the pressure contact (pressing contact) of thickness adjustment means.As a result, the developer owing to being struck off by the thickness adjustment means namely, carries the developer of static, can be prevented from turning back to the developer-accommodating chamber, and in order to stop the reduction of picture quality, controlling reliably the developer charging becomes possibility.
The present invention can carry out triboelectric charging to developer reliably.Further, the delivery member developer that can be easy to charge first turns back to developer and carries member, and the uncharged developer feeding that also will be contained in easily in the developer-accommodating chamber carries member to developer.
Another aspect of the present invention provides developer box, and it comprises:
The developer-accommodating chamber of receiving photographic developer;
At least one detection remains in the window of the amount of developer in the developer-accommodating chamber;
The cleaning element of clean window;
Stirring is contained in the agitating member of the developer in the developer-accommodating chamber; With
Be arranged on the agitating member, and wherein be formed with the slit fixed component of (slit), when cleaning element was inserted into the slit, fixed component was fixed cleaning element.
Have such structure, insert cleaning element by the slit from fixed component, cleaning element is fixed to agitating member by fixed component.This structure has been eliminated needs to be used for the fixedly extra section of cleaning element and agitating member, so that cleaning element can be fixed to agitating member by simple installation process.Therefore, this has reduced the number of components that needs clearly, and has improved the efficient of fitting operation.And then because cleaning element is fixed to fixed component by inserting from the slit, cleaning element also can be easy to remove, and has improved the suitability that cleaning element is recycled.
Another aspect of the present invention provides developer box, and it comprises:
The developer-accommodating chamber of receiving photographic developer;
Have stirrer shaft, and be disposed in the stirrer of inside, developer-accommodating chamber; With
Support the axle support unit of at least one end of stirrer shaft, this axle support unit comprises:
In the inwall in developer-accommodating chamber, be formed groove, and the retaining part stirrer shaft of rotatable maintenance stirrer shaft;
Open guiding groove at one end, and with the stirrer shaft guiding to retaining part; With
Restriction remains on the restricted part of the stirrer shaft motion boundary between guiding groove and retaining part in the retaining part, guiding groove from respect on the recessed direction of retaining part the inside in developer-accommodating chamber than the narrower location guide stirrer shaft of retaining part towards restriction section.
Since guiding groove with stirrer shaft from the narrower location guide of the support section of the recessed direction of inwall internal ratio to restricted part, when in developer box, stirrer shaft being installed, the stirrer shaft requirement is less from the deflection that guiding groove slips over restricted part, thereby reduce the load that is applied on the stirrer shaft, and reduce the destroyed risk of stirrer shaft.And then because the opposing stirrer shaft is little from the resistibility that guiding groove slips over restricted part, stirrer shaft can be easy to install.
According to a further aspect in the invention, provide a kind of developer box, having comprised:
Have outer surface, and the developer that carries developer thereon carries member;
Have and be formed at wherein uncovered, and support the shell that developer carries member in uncovered exposure position, uncovered have an edge; With
Be formed basically box-like, and along uncovered edge placement, be used for the strenthening member of strengthened edge.
This structure provides carries member along developer and is exposed to the shell that uncovered edge wherein has the box-like footing, thereby has effectively reinforced uncovered edge, and this intensity of shell is lower.Further, because footing is formed box-like, the thickness that is provided with the shell of footing can equal the thickness in the zone beyond the shell footing, has reduced in molded (molding) process and to have carried the possibility of the relative surface depression (sinks) of member with developer.Therefore, when keeping developer and carrying the accurate slit at member and uncovered edge, the uncovered of shell can be reinforced reliably.
When the user clamped shell near uncovered, said structure had stoped the distortion of shell, thereby had effectively stoped the destruction of developer roll, and had stoped the air gap leakage of developer from the formation between developer roll and the shell.
Description of drawings
In conjunction with the drawings with following description, feature of the present invention, advantage and other purpose will become obviously, wherein:
Fig. 1 is the side cross-sectional view as the laser printer of image processing system of the present invention;
Fig. 2 A is the side cross-sectional view of the handle box that uses of laser printer shown in Figure 1;
Fig. 2 B is the side cross-sectional view that can use in laser printer shown in Figure 1 as the handle box that substitutes of the handle box shown in Fig. 2 A;
Fig. 3 is the backside perspective view according to developer box of the present invention;
Fig. 4 is the rear view of developer box;
Fig. 5 is the side view of developer box;
Fig. 6 is the upward view of developer box;
Fig. 7 is the side cross-sectional view of the uncovered amplification than low edge that forms in the shell of developer;
Fig. 8 is the cross-sectional side view of the uncovered amplification than low edge that forms in the shell of the developer of routine;
Fig. 9 is the distortion according to embodiment, the side cross-sectional view of the uncovered amplification than low edge that forms in the shell of Fig. 7;
Figure 10 is another distortion according to embodiment, the side cross-sectional view of the uncovered amplification than low edge that forms in the shell of Fig. 7;
Figure 11 is the side cross-sectional view in the laser printer of Fig. 1 development chamber of using;
Figure 12 shows that the development chamber is near the side cross-sectional view of the amplification of the part of feed rolls, developer roll, thickness adjustment sheet and wooden partition (plate wall);
Figure 13 is the cross-sectional view of developer box A-A along the line among Figure 11;
Figure 14 be among Figure 11 developer box when the top cover open mode from the skeleton view of developer box front;
Figure 15 is the side cross-sectional view of the developer box that uses of the laser printer of Fig. 1;
Figure 16 is the skeleton view of stirrer in the developer box;
Figure 17 is the vertical view of stirrer;
Figure 18 is the cross-sectional view of the part that stirrer is indicated by line B-B among Figure 17;
Figure 19 is the cross-sectional view of the part that stirrer is indicated by line C-C among Figure 17;
Figure 20 is the skeleton view that shows the axle head that the front stirrer of wiper is installed;
Figure 21 is the skeleton view of the axle head of stirrer behind the demonstration installation wiper;
Figure 22 is the vertical view that shows the stirrer axle head;
Figure 23 is the upward view that shows the stirrer axle head;
Figure 24 A is indicated in wiper to be inserted into the rear cross-sectional view that the process of wiper directly is installed in the slit;
Figure 24 B indicates the cross-sectional view that the process of wiper is installed when wiper further is inserted in the slit;
Figure 24 C is indicated in the cross-sectional view that the process of wiper is installed after wiper is inserted in the slit fully;
Figure 25 A is the vertical view according to the wiper of the distortion of embodiment;
Figure 25 B is the cross-sectional view that the wiper of demonstration Figure 25 A is installed to fixed component;
Figure 26 is the distortion according to embodiment, is provided with the skeleton view of the stirrer of guided plate;
Figure 27 shows to remain on the interior stirrer shaft of axle support unit at the skeleton view of the inside, developer-accommodating chamber of developer box;
Figure 28 is the central cross section figure that does not have the developer box of stirrer;
Figure 29 shows when stirrer shaft is removed the skeleton view of the axle support unit of seeing from inside, developer-accommodating chamber;
Figure 30 is the cross-sectional view of developer box D-D along the line among Figure 28.
Embodiment
The general structure of laser printer will be described.As shown in Figure 1, laser printer 1 comprises main casing 2 Hes as image processing system of the present invention, and the feed-in unit 4 of the supply paper 3 in main casing 2 is at the image formation unit 5 of 4 paper of supplying, the 3 formation images from the feed-in unit.
(1) main casing
Laser printer 1 comprises that also a sidewall that is formed on main casing 2 is used for inserting and removing the access hole 6 of handle box 20 described later, and can be at the protecgulum 7 of access hole 6 opening and closing.Protecgulum 7 is rotatably supported by the lid axle 8 that the base by protecgulum 7 is inserted into.Therefore, when protecgulum 7 is rotated when closing around lid axle 8, protecgulum 7 covers access hole 6, as shown in fig. 1.When protecgulum 7 was rotated to be opened around lid axle 8, access hole 6 was exposed, and makes handle box 20 be installed into or to remove from main casing 2 by access hole 6.
In the following description, protecgulum 7 be mounted a side of laser printer 1 thereon and when handle box 20 is installed into main casing 2 respective side of handle box 20 will be referred to as " front side ", and opposition side will be referred to as " rear side ".
(2) feed-in unit
Feed-in unit 4 comprises the paper tray 9 that can insert or remove from the bottom of main casing 2 on fore-and-aft direction, be arranged in separate roller 10 and the separating pad 11 of the front end top of paper tray 9, and be arranged in the feed-in roller 12 of rear side of separate roller 10 of the upstream of separating pad 11 with respect to the direction of transfer (hereinafter referred to as " paper direction of transfer ") of paper 3.Feed-in unit 4 also comprise except be arranged in upper the place ahead of separate roller 10 and on the paper direction of transfer paper cleaning roller 13 in the downstream of separate roller 10, and be arranged in the pinch roll 14 of the relative position of paper cleaning roller 13.
The paper bang path reverses direction of paper 3 forms U-shaped basically near paper cleaning roller 13 towards the rear side of laser printer 1 on the feed side.Feed-in roller 4 also comprises and being arranged in respect to a pair of registration rollers 15 of paper direction of transfer below the handle box 20 in the more downstream of the U-shaped portion of paper bang path.
Pressboard 16 is arranged on paper tray 9 interior paper 3 with the support stack state.Pressboard 16 is in its back-end by pivotal support, so that front end can be pivotally lowered into stop position (resting position) by pivot, wherein pressboard 16 leans against on the base plate of paper tray 9, and can be pivoted upwardly to the feed-in position, wherein pressboard 16 upwards forms the gradient from the rear end to the front end.
The front portion that lever 17 is arranged on paper tray 9 is used for upwards promoting the front end of pressboard 16.The rear end of lever 17 pivotally is supported on the lever shaft 18 in the position below the front end of pressboard 16, so that the horizontal level that the front end of lever 17 can be placed along the base plate of paper tray 9 at lever 17, and lever 17 upwards promotes, and pivot rotates between the obliquity of pressboard 16.When driving force was imported into lever shaft 18, lever 17 was around lever shaft 18 rotations, and the front end of lever 17 is converted into the feed-in position with the front end lifting of pressboard 16 with pressboard 16.
When pressboard 16 during in the feed-in position, the top paper that is stacked on the paper 3 on the pressboard 16 is being pressed against feed-in roller 12.Feed-in roller 12 beginnings of rotation are to the paper of feed-in paper 3 between separate roller 10 and the separating pad 11.
When paper tray 9 was removed from main casing 2, pressboard 16 was to sinking to (settle into) stop position.When pressboard 16 during at stop position, paper 3 can be stacked on the pressboard 16.
When feed-in roller 12 during to separation point position sheets 3, and paper is when beginning to insert between separate roller 10 and the separating pad 11, and the separate roller 10 of rotation separates and a ground feed-in paper 3.Every paper of the paper 3 of separate roller 10 feed-ins is by between paper cleaning roller 13 and the pinch roll 14.After paper cleaning roller 13 removed the paper dust from paper 3, the U-shaped paper bang path of paper on the feed side transmitted, thus in main casing 2 reverses direction, and be passed to registration rollers 15.
Behind alignment paper 3, registration rollers 15 is passed to transfer position between photosensitive drums 28 and the aftermentioned transfer roll 31 with paper 3, and the toner image that forms in this position photosensitive drums 28 is transferred on the paper 3.
(3) image formation unit
Image formation unit 5 comprises scanning element 19, handle box 20 and fixation unit 21.
(a) scanning element
Scanning element 19 is disposed in the top of main casing 2 and comprises lasing light emitter (not diagram), the polygon mirror 22 that can be driven in rotation, f θ lens 23, catoptron 24, lens 25, and catoptron 26.Lasing light emitter is based on view data Emission Lasers bundle.Shown in the dotted line among Fig. 1, laser beam by f θ lens 23, is reflected mirror 24 reflections by polygon mirror 22 deflections, and then scioptics 25 are reflected mirror 26 reflection downwards with on the surface that shines the photosensitive drums 28 in the handle box 20.
(b) handle box
Shown in Fig. 2 A, handle box 20 is arranged in the main casing 2 of scanning element 19 belows, and can be installed into or remove from body shell 2 by access hole 6.Handle box 20 comprises bulging box 27 and the developer box 30 that is removably mounted on the bulging box 27.
Drum box 27 comprises bulging side shell 76 Hes, the photosensitive drums 28 in drum side shell 76, grid-control formula corona charging device 29, transfer roll 31 and cleaning element 32.
In drum box 27, be formed for sheets 3 to uncovered 113 (the pre-drum opening) of front drum of the transfer position of drum box 27 inside, and be used for paper 3 is handed to from the transfer position back kick uncovered 114 (the post-drum opening 114) of rear drum of bulging box 27 outsides.Front drum uncovered 113 is arranged on the front side of the transfer position of developer box 30 belows, to allow in drum box 27 connection (communication) of inside and outside axial (hereinafter to be referred as " axially ") along transfer roll 31.Rear drum uncovered 114 is formed on by transfer position, in contrast to the rear side of the transfer position of front drum uncovered 113, to provide along the 27 inside and outside connections vertically of drum box.
This toner and coloring agent, such as carbon black, or wax, the adjuvant that reaches silicon dioxide and so on mixes to improve liquidity.The mean diameter of toner particle is about 6-10 micron.
Turning axle 46 is supported on basically in the sidewall 69 at toner container cavity 41 centers by rotatable.Agitating member 47 is arranged on the turning axle 46.Motor (not having diagram) produces and is imported into turning axle 46 to drive the driving force of turning axle 46 rotations.Then, agitating member 47 is mobile at circular path around turning axle 46 by toner container cavity 41, and stirs the toner that is contained in the toner container cavity 41.When agitating member 47 stirred toner, some toners were by discharging to feed rolls 37 on fore-and-aft direction in uncovered 43 of demarcation strip 40 interior formation.
Feed rolls 37 is disposed in uncovered 43 back and comprises and led the metal roller shaft 50 that foam roller 51 that foamed material forms covers by electricity.Roll shaft 50 rotatably is supported in the two side 69 of the shell 36 in the development chamber 42.Feed rolls 37 is driven in rotation by the driving force that is input to roll shaft 50 by motor (not having diagram).
When developer box 30 was installed into bulging box 27, developer roll 38 from it front end was relative with photosensitive drums 28 diagonal angles.In other words, below vertical centre backward the rear portion of outstanding developer roll 38 farthest contact with photosensitive drums 28.
Be fed on the developer roll 38 by rotation feed rolls 37 by uncovered 43 toners of discharging.Simultaneously, toner between feed rolls 37 and developer roll 38 by the forward triboelectric charging.When developer roll 38 rotation, be supplied to developer roll 38 between the rubber rollers 53 of toner process developer roll 38 and the pressure section 55 of thickness adjustment sheet 39, thereby keep developer roll 38 lip-deep toners to have unified thickness.
When photosensitive drums 28 rotation, charger 29 utilizes uniform positive electrode with the surface charging of photosensitive drums 28.Next, the laser beam of launching from scanning element 19 by high-velocity scanning, forms the electrostatic latent image corresponding to the image that will form at paper 3 on the surface of photosensitive drums 28.
Next, when developer roll 38 rotation, the positive charged toner of carrying on developer roll 38 surfaces begins to contact with photosensitive drums 28, and is supplied to by the surf zone of the photosensitive drums 28 of the positive charge of laser beam lithography, and, therefore electronegative potential is arranged.By such method, the electrostatic latent image on the photosensitive drums 28 is converted into visual image according to reverse developing process (reverse developingprocess), so that toner image is carried on the surface of photosensitive drums 28.
Next, when registration rollers 15 process front drums uncovered 113, and pass transfer position between photosensitive drums 28 and the transfer roll 31 when paper 3 transmission is advanced bulging box 27, the lip-deep toner image that is carried at the surface of photosensitive drums 28 is transferred on the paper 3 by the transfer bias that is applied to transfer roll 31.After toner image was transferred, paper 3 was by rear drum uncovered 114 and be passed out bulging box 27, and is passed to fixation unit 21.
The toner that remains in behind the transfer operation on the photosensitive drums 28 is developed roller 38 recovery.Further, the cleaning brush that is deposited in the cleaned member 32 of paper dirt on the photosensitive drums 28 58 from paper 3 reclaims.
(c) fixation unit
Fixation unit 21 is disposed in the rear side of handle box 20 and comprises fixed frame 59; Warm-up mill 60 and the pressure roll 61 that is arranged in the fixed frame 59.
Warm-up mill 60 comprises that the surface is coated with the metal tube of fluororesin, and is placed on the Halogen lamp LED that is used for heating in the metal tube.Warm-up mill 60 is by the drive force rotation from motor (not having to show) input.
Pressure roll 61 is placed on below and the pressure contact warm-up mill 60 relative with warm-up mill 60.The metal roller shaft that the roller that pressure roll 61 is formed by elastomeric material covers consists of.Pressure roll 61 is followed the rotary actuation of warm-up mill 60.
In fixation unit 21, in the time of between paper 3 is by warm-up mill 60 and pressure roll 61, transfer position be transferred on the paper 3 toner image by heat by photographic fixing to paper 3.After toner image is arrived paper 3 by photographic fixing, discharge pallet 62 sheets 3 that warm-up mill 60 and pressure roll 61 continue along outlet end paper bang path to the top surface that is formed on main casing 2.
The paper bang path of outlet end from fixation unit 21 be directed to discharge pallet 62 and be basically U-shaped and the direction of transfer that is used for counter-rotating paper 3 to the direction towards the front portion of laser printer 1.A pair of delivery roll 63 is disposed in mid point along outlet end paper bang path, and a pair of distributing roller 64 is disposed in the downstream end of same paths.
Therefore, through behind the fixation unit 21, paper 3 is passed along outlet end paper bang path, here delivery roll 63 receive and sheets 3 to distributing roller 64, and distributing roller 64 then receives and discharges paper 3 to discharging on the pallet 62.
Next, the structure relevant with the shell of developer box will be described.
As shown in Fig. 2 A and 3, the shell 36 of developer box 30 has box-shape, rear side be open wide and integrally be provided with roof 70, antetheca 72, above-mentioned two sidewalls 69 and diapire 71.Open region at rear side is uncovered 94.
As shown in Figure 3, the back edge of the uncovered 94 rear support members 111 by installation component 109, sidewall 69 and the back edge of diapire 71 limit.When observing from rear side, uncovered 94 is rectangles and extend at Width basically.Developer roll 38 is disposed in uncovered 94 and is exposed therefrom.As shown in Figure 5, developer roll 38 is supported on the shell 36 so that gives prominence to housings 36 by uncovered 94 when observing from the side.The patchhole 121 of position is formed in each sidewall 69 rear end of shell 36 toward each other on Width.The roll shaft 52 of developer roll 38 is through patchhole 121 and inserts so that developer roll 38 rotatably is supported on the shell 36, and the vertical centre section of rubber rollers 53 is by the farthest of uncovered 94 outstanding shells 36 simultaneously.
Shown in Fig. 2 A, roof 70 is plate shape and the top that plays a part isolation toner container cavity 41 and development chamber 42 in vertical view.
As shown in Fig. 3 and 5, sidewall 69 is plate shape and the sidepiece that plays a part isolation toner container cavity 41 and development chamber 42.Sidewall 69 is rotatably supporting rotating shaft 46, roll shaft 50 and roll shaft 52 also.
As shown in Fig. 2 A, diapire 71 plays a part the bottom in isolation toner container cavity 41 and development chamber 42.Diapire 71 integrally is provided with front diapire 74, central wall 75 and rear diapire 76.
Front diapire 74 has the basically semi-circular cross-section with the rotate path of stirrer 45 in the pigment container cavity 41.Central wall 75 is arranged on the rear side of front diapire 74 and has basically semi-circular cross-sections along with the peripheral surface of the feed rolls 37 in the development chamber 42.
Rear diapire 76 is arranged on the rear side of central wall 75 and has the flanged plate shape that slopes downwardly into the rear portion.The back of rear diapire 76 is formed in the bottom 68 of uncovered 94 the lower limb that extends on the Width of shell 36.
As shown in Figure 3, be arranged on one of sidewall 69 that consists of shell 36 for the gear mechanism that drives turning axle 46, roll shaft 50 and roll shaft 52 rotations (not having to show) with for the gear cap 79 of covering gear mechanism.Two part rear walls 73 be arranged on shell 36 uncovered 94 in bottom 68 on.
Part rear wall 73 is disposed in the transverse end of bottom 68 and is spaced apart at Width.Part rear wall 73 extends upward from two transverse end of following 68.Be cut off to form L shaped basically in the rear view in the bottom of each laterally inboard part rear wall 73.
Reinforcing portion 80 is arranged in uncovered 94 the bottom 68.
Reinforcing portion 80 extends and is installed in the cutting out section of part rear wall 73 between two part rear walls 73 along bottom 68.Reinforcing portion 80 is formed and is integrally provided roof 82, antetheca 85, diapire 83 and two sidewalls 84 continuously from uncovered 94 bottom 68.Reinforcing portion 80 is box-shaped and unlimited at rear side.Especially, form basically three sides of rectangle with the meet at right angles xsect of the reinforcing portion 80 that obtains of Width, do not have rear side.
As shown in Fig. 3 and 7, roof 82 is set up and forms continuously with it along following 68.Roof 82 is outstanding backward.Antetheca 85 by basic terrain imaging along following 68 elongated rectangular and from the front of roof 82 to downward-extension.Diapire 83 also has along the basically elongated rectangular shape of bottom's extension and is placed facing to roof 82 in the vertical direction.Diapire 83 is from the downwards following of antetheca 85 and the tiltedly extension that retreats.
As shown in FIG. 3, thus two transverse end that sidewall 84 has rectangular-plate-shaped basically and is disposed in roof 82, antetheca 85 and diapire 83 face with each other at Width.
As shown in Figure 7, antetheca 85 connects the front end of antethecas 82 and diapire 83, forms three sides of the rectangle that opens wide backwards with the meet at right angles xsect of the reinforcing portion 80 that obtains of Width.Further, as shown in Figure 3, two sidewalls 84 connect two widthwise edges of roof 82 to each widthwise edge of antetheca 85 and diapire 83, form the box-like that opens wide backward.
Integrally be provided with backward step section 97 and be placed on diagonally the front step section 98 in the place ahead in the backward step section 97 in the part of the bottom 68 above the reinforcing portion 80 as shown in FIG. 7.Have such structure, have stepped form with the meet at right angles xsect of the bottom 68 that obtains of Width.
101 top margin is formed end face 102 continuously from the rear surface.On the xsect that obtains meeting at right angles with Width, top surface 102 has the plate shape that 101 top margin makes progress and extends forward from the rear surface diagonally.
Lower thin slice 87 (film) is arranged on the top surface 102 of bottom 68.Lower thin slice 87 is formed by the polyethylene terephthalate thin slice of the shape of rectangular sheet basically.As shown in Fig. 2 A and 7, the latter half of lower thin slice 87 is fixed to the surface of top surface 102.
Especially, as shown in Figure 7, the back that lower thin slice 87 is arranged to lower thin slice 87 flushes with the rear surface 101 of bottom 68.More particularly, as the reference of fore-and-aft direction, the latter half of lower thin slice 87 is fixed to top surface 102 with double-side band or this type of thing (not illustrating) to use the back (limit that is formed by rear surface 101 and top surface 102) of top surface 102.As a result, the rear end face of lower thin slice 87 is positioned and flushes with reference on the fore-and-aft direction.
As shown in Fig. 2 A, lower thin slice 87 be positioned and so that latter half is fixed to top surface 102 and first half obliquely upwards and the lower surface that extends forward to contact developer roll 38.Like this, lower thin slice 87 stop following 68 and developer roll 38 between the space and prevent that toner from passing through this air gap leakage.
As shown in Fig. 3 and 6, guiding elements 81 is arranged on the shell 36 of developer box 30.Guiding elements 81 is outstanding and be plate shape downwards from diapire 71, extends upward in front and back.Guiding elements 81 is layout spaced in parallel to each other on Width.As shown in Fig. 2 A, each guiding elements 81 is outstanding and have the rear end 105 that is connected to antetheca 85 and diapire 83 downwards from rear diapire 76 and central wall 75, and front end 104 is connected to front diapire 74.Each guiding elements 81 is integrally formed with diapire 83, antetheca 85, rear diapire 76, central wall 75 and front diapire 74.Each guiding elements 81 also has bottom 106, and straight the extension forward then in its rear end from diapire 83 makes progress and the rear end of bend forward with diapire before contacting 74 below central wall 75 slightly.
As shown in Figure 3, guiding elements reinforcing portion 86 is provided for reinforcing guiding elements 81.As shown in Fig. 2 A and 6, guiding elements reinforcing portion 86 has plate shape and extends at Width.Thereby guiding elements reinforcing portion 86 is intersecting with the front and back mid point of each guiding elements 81 basically with on the rectangular direction of fore-and-aft direction from central wall 75 is outstanding downwards.Guiding elements reinforcing portion 86 connects guiding elements 81 and reinforces guiding elements 81 at Width.
In the developer box 30 of above-described embodiment, the box-like reinforcing portion 80 of rear portion opened is set up along uncovered 94 bottom 68.Reinforcing portion 80 is reinforced uncovered 94 bottom 68 effectively, and it is the weak section in the shell 36.By forming the box-like reinforcing portion 80 of opening wide to rear side, might the zone of reinforcing portion 80 with in except other zone of reinforcing portion 80, form shell 36 with uniform thickness to reduce development (sinks developing) possibility of the depression in the lip-deep molding process relative with the developer roll 38 that is formed continuously with reinforcing portion 80, namely, following 68 top surface 102.Therefore, reinforcing portion 80 is stiffened shell 36 uncovered 94 reliably, and, can keep the accurate space between the bottom 68 of developer roll 38 and uncovered 94.
In the developer box 30 in the embodiment of above-mentioned explanation, the xsect of the reinforcing portion 80 that meets at right angles with Width and obtain is the rectangular shapes with three sides, be convenient in molding process reinforcing portion 80 remove and so that reinforcing portion 80 can easily be formed box-like.Therefore, stiffened shell 36 is uncovered 94 reliably, simplifies simultaneously molding process.
In the developer box 30 in the embodiment of explanation, reinforcing portion 80 is extended at the Width of developer roll 38, namely, and the Width of the shell 36 in the bottom 68 along uncovered 94.Reinforcing portion 80 prevents shell 30 distortion when the user catches shell 36 near uncovered 94, thereby effectively prevents the damage of developer roll 38 and the generation of the toner leakage between developer roll 38 and the shell 36.
Lower thin slice 87 in the developer box 30 in the embodiment of explanation stops and is formed on uncovered 94 bottom 68 and the space between the developer roll 38, prevents that toner from passing through this air gap leakage.Further, the reinforcing portion 80 that is arranged on following 68 is formed box-like, so that it is less at the top surface 102 of the bottom 68 relative with developer roll 38 possibility of depression to occur during the moulding.As a result, top surface 102 can be formed smooth surface, so that lower thin slice 87 can be fixed to smooth top surface 102 accurately.
When following 68 are formed simple rectangular cross section, in the traditional structure as shown in Figure 8, if lower thin slice 87 is fixed on following 68 by the back of the lower thin slice 87 that aligns and following 68 back, among Fig. 8 shown in the solid line, if following 68 another parts of contact, lower thin slice 87 easy (susceptible) peels off (peel off) from following 68.On the other hand, if lower thin slice 87 is fixed to than the position in the farther bottom 68 forward, back, as shown in phantom in Figure 8, might reduce the risk that the top surface of lower thin slice from following 68 peels off, but be used for lower thin slice 87 is fixed to clear and definite reference point on following 68.As a result, can not reliably lower thin slice 87 be fixed on following 68 along Width, reduce the installation accuracy of lower thin slice 87.
Yet in the developer box 30 in the embodiment of explanation, following 68 have the step shape of cross section that is made of backward step section 97 and front step section 98.Back by the lower thin slice 87 that aligns and setting than backward step section 97 back of farther front step section 98 forward, namely, by the upstream side on uncovered 94 directions of leaking, lower thin slice 87 is fixed on following 68 at toner.Therefore, if backward step section 97 another parts of contact, because lower thin slice 87 is fixed in the front step section 98 of the front that is arranged in backward step section 97, lower thin slice 87 more impossible top surfaces 102 are from peeling off.And naming a person for a particular job as a reference with the back of front step section 98, lower thin slice 87 is fixed in the front step section 98 so that lower thin slice 87 can be fixed reliably along top surface 102.
In the developer box 30 in the embodiment of explanation, developer roll 38 is by uncovered 94 outstanding shells 36.Therefore, when developer box 30 is installed on the bulging box 27, developer roll 38 can be from the position of front side, top facing to photosensitive drums 28 so that the part of developer roll 38 contacts photosensitive drums 28 by uncovered 94 below the outstanding vertical centre in farthest.This structure can increase the degree of freedom of setting device layout, can produce compacter device.This structure also can be divided the space that is used in following 68 formation reinforcing portion 80.
In the developer box 30 in the embodiment of explanation, when paper 3 was passed into bulging box 27 by front drum uncovered 113, guiding elements 81 was formed to guide paper 3 to the transfer position between photosensitive drums 28 and the transfer roll 31 with reinforcing portion 80 continuously.Therefore, guiding elements 81 can guide paper 3 to transfer position smoothly, and further stiffened shell 36 uncovered 94.
Further, guiding elements 81 forms along the rectangular fore-and-aft direction of direction with reinforcing portion 80 extensions.Guiding elements 81 has separating that the interval gets at Width.Therefore, guiding elements 81 can guide reliably paper 3 to transfer position and reduce the frictional resistance that produces between paper 3 and the guiding elements 81.
The handle box 20 of the embodiment of above-mentioned explanation and laser printer 1 comprise and are provided with the developer box 30 that is formed on uncovered 94 reinforcing portion 80 of shell 36 for reinforcing.Therefore, developer box 30 increases the rigidity of handle box 20 and laser printer 1.
In the example of above-mentioned explanation, developer box 30 is detachably mounted on the bulging box 27 to form handle box 20, and handle box 20 is detachably mounted in the main casing 2.Yet, also photosensitive drums 28, charger 29, transfer roll 31, cleaning element 32 and this class A of geometric unitA might be set in main casing 2, and remove drum box 27, and developer box 30 removably is installed in main casing 2.
In the embodiment of above-mentioned explanation, meet at right angles with Width and the xsect of the reinforcing portion 80 that obtains forms three sides of the rectangle that opens wide backwards, as shown in Figure 7.Yet reinforcing portion of the present invention does not need to have this shape of cross section, if reinforcing portion has box-like.For example, roof 82, diapire 83 are connected the back of (do not have show) and can be connected by rear wall 95 in Fig. 9 with sidewall, as shown in Figure 9.Have this structure, meet at right angles with Width and the xsect of the reinforcing portion that obtains is rectangle sealing, hollow.
Selectively, as shown in Figure 10, reinforcing portion 80 can form by the front that connects roof 82 and diapire 83, and the xsect of the reinforcing portion that obtains so that meet at right angles with Width forms the V-arrangement that opens wide backward.
As shown in fig. 1, developer box 30 is detachably mounted in the bulging side shell 76.Therefore, when handle box 20 was installed in the main casing 2, by at first opening protecgulum 7 and then inserting developer box 30 and at handle box 20 developer box 30 is installed by access hole 6, developer box 30 can be installed in the main casing 2.
As shown in Figure 11, developer box 30 comprise developer side shell 36 and, the developer roll 38 in developer side shell 36, feed rolls 37, thickness adjustment sheet 39 and wooden partition 49.
Shown in Figure 11 and 14, developer side shell 36 is formed the box-like that rear side opens wide.Developer side shell 36 comprises top cover 70 and main casing 87.The peristome that is formed on rear side is rear uncovered 94.
Rear uncovered 94 are limited by the rear support member 111 of installation component 109 described later and the back of sidewall 69 and diapire 71.Rear uncovered 94 is rectangle and extend (hereinafter, Width is with expression and fore-and-aft direction and the rectangular direction of vertical direction) at Width basically in rear view.
Top cover is plate shape in vertical view, and opens and closes above toner container cavity 41 described later and development chamber 42.Top cover 70 is integrally formed with top, wooden partition 49 and a plurality of front and back described later rib 88 and the cross rib 89 of partition wall 40 described later.
Front and back rib 88 is plate shapes and parallel to each other, and (seeing Figure 11) extends upward along front and back on top cover 70 when top cover 70 is assembled on the main casing 87.As shown in Figure 14, it is spaced parallel to each other that front and back rib 88 is arranged on the lower surface of the top cover 70 relative with the inside of developer side shell 36 broad ways.Two front end before and after teat 90 is placed on forward in the rib 88, two front and back ribs 88 are arranged as the transverse center of the most close top cover 70 with the front near top cover 70.
Also be set up stage portion 91 near two centres at fore-and-aft direction in the front and back rib 88 of the transverse end of top cover 70.The back step 93 of the back of close top cover 70 is arranged on the rear end of these stage portion 91, forms narrow ledge structure along fore-and-aft direction.Further, side direction teat 100 is formed on from narrow ledge structure Width outwards on the immediate front and back of the widthwise edge rib 88 of outstanding top cover 70.
Front diapire 77 has the basically semi-circular cross-sections with the rotate path of the stirrer described later 45 in the pigment container cavity 41.
Rear diapire 79 is arranged on the rear side of front diapire 77 and has backward towards the flanged plate shape that has a down dip.
When from top view, open top 95 is similar to be installed on these external edge to the shape of the external edge of the grid that is formed by the front and back rib 88 that intersects on the top cover 70 and cross rib 89.Stage portion 96 is formed on two sidewalls 69 of the sidepiece that consists of open top 95, is used for installing loosely when top cover 70 is mounted on the main casing 87 stage portion 91 from two nearest front and back ribs 88 of the outside widthwise edge of top cover 70.
Shown in Figure 11 and 14, can be closed with the edge joint of blade installation portion 73 in transverse end by the hook portion that the back of top cover 70 and each back step 93 form, transverse end is formed by the top surface of blade installation portion 73 and front surface and has L shaped xsect to locate the back of top cover 70 with respect to the back of main casing 87 when assembling.Then top cover 70 rotates around the abutment between the limit of hook portion and blade installation portion 73 with the direction of arrow among Figure 14, until the grid that is formed by the front and back rib 88 that intersects and cross rib 89 is implemented in the top that forms in the main casing 87 uncovered 95, thereby finish the assembling process of top cover 70 on main casing 87.
Contact with blade installation portion 73 by placing back step 93 in this assembling process, top cover 70 can be positioned with respect to the main casing 87 on the back.Further, during the inside surface of the sidewall 69 of the side direction teat 100 contact formation main casings 87 when be arranged on outermost front and back rib 88 at Width on, top cover 70 can be positioned with respect to main casing 87 on Width.Be arranged on the inside surface that forward teat 90 on the front and back rib 88 at place, two bosoms contact the antetheca 72 that consists of main casing 87 subsequently, to locate top covers 70 with respect to the main casing 87 in the front side.As a result, top cover 70 can not have being assemblied on the main casing 87 of motion by between.
Be used for the gear mechanism 81 of driving stirrer turning axle 46, supply roll shaft 50 and 52 rotations of development roll shaft and be arranged on one of sidewall 69 of formation developer side shell 36 for the gear cap 82 that covers gear mechanism 81.
Position in the middle of partition wall 40 is arranged on the fore-and-aft direction in the developer side shell 36 is used for separating at fore-and-aft direction the inside of developer side shell 36.Uncovered 43 penetrate the zone line of partition wall 40 to allow the connection between toner container cavity 41 and the development chamber 42.Bottom the past diapire 77 of partition wall 40 and the coupling part of central wall 78 form.The top of partition wall 40 is formed on the top cover 70 with vertically facing to the bottom of partition wall 40 at Width, and is formed with uncovered 43 between the two.Partition wall 40 is from top cover 70 vertically to downward-extension, and the bottom of partition wall 40 is connected to top cover 70 along the fore-and-aft direction of top cover 70 in identical with stage portion 91 basically position.
As shown in Figure 11, the toner container cavity takes up space in the front side of the shell 36 of being separated by partition wall 40.Toner container cavity 41 is filled the toner with positive charge non-magnetic, one-component.
Be used for filling uncovered two sidewalls 69 that are formed on the developer side shell 36 that limits toner container cavity 41 of color powder feeding of toner to toner container cavity 41.Color powder feeding is uncovered to be sealed with cover 35.
Feed rolls 37 is disposed in uncovered 43 the back of top of the central wall 78 in development chamber 42.Feed rolls 37 faces toward developer roll 38 so that the top of feed rolls 37 is lower than the top margin of the bottom of partition wall 40 diagonally from lower front side.
Feed rolls 37 comprises the metal roller shaft 50 of sponge roller 51 coverings that formed by conductive foams.Feed rolls 37 is supported in the sidewall 69 of developer side shell 36 and with developer roll 38 and contacts, so that both be compressed to a certain degree.Especially, through hole 122 position respect to one another on Width is arranged in each sidewall 69.Supply roll shaft 50 is inserted into through hole 122 so that feed rolls 37 rotatably is supported in the developer side shell 36.
Driving force from motor (not having diagram) is transfused to supply roll shaft 50 to drive feed rolls 37 rotations.Feed rolls 37 is along counterclockwise rotation among Figure 11 so that the outer surface of feed rolls 37 moves along the reverse direction of developer roll 38 on the contact point between two rollers.
It is over top in feed rolls 37 that developer roll 38 is arranged to the first half of developer roll 38 basically.Developer roll 38 has than the large diameter of feed rolls 37 and comprises metal developing roll shaft 52 above-mentioned, and covers the rubber rollers 53 that is formed by conductive rubber material of development roll shaft 52.Rubber rollers 53 is more particularly formed by conduction urethanes (urethane) rubber or the silicon rubber or the materials that contain meticulous carbon granule, and its surface scribbles urethane rubber or fluorine silicon rubber.Development roll shaft 52 is supported in the sidewall 69 of the developer side shell 36 in the development chamber 42.
Thereby developer roll 38 is supported in the sidewall 69 by rear uncovered 94 outstanding developer side shells 36.More particularly, through hole 121 is being formed in two sidewalls 69 of developer side shell 36 near the position of developer side shell 36 rear ends, and on Width toward each other.Development roll shaft 52 is inserted through through hole 121 so that developer roll 38 rotatably is supported in the developer side shell 36, and the vertical centre section of rubber rollers 53 is by rear uncovered 94 farthest that are projected into outside the developer side shell 36.
It is the main blade member 54 that the metal leaf spring of rectangle consists of that thickness adjustment sheet 39 is included in the front view (seeing Figure 13), and is arranged on the pressure section 55 on the top of main blade member 54.Main blade member 54 comprises upper end 83, and it is mounted in the bottom in the blade installation portion 73, and lower end 84, and it is the top that pressure section 55 is set.Pressure section 55 has semi-circular cross-section and is formed by electrically insulating silicone rubber.
As shown in Figure 13, thickness adjustment sheet 39 extends at Width along the rear surface of blade installation portion 73.As shown in Figure 11, installation component 109 is fixed to the upper end 83 of main blade member 54 rear surface of the blade installation portion 73 in the rear end that two transverse end are supported on sidewall 69.
Therefore, main blade member 54 is arranged to upper end 83 and is supported on downwards towards the rear surface of the blade installation portion 73 of top rake, and lower end 84 83 extends towards the place ahead downwards to feed rolls 37 diagonally from the upper end conversely, near developer roll 38 and wooden partition therebetween 49.Therefore, thickness adjustment sheet 39 is the 83 84 downward and forward extensions to the lower end from the upper end, and close wooden partition 49 gradually.
The bottom 85 of wooden partition 49 is connected to the top of partition wall 40 and the basal surface of the top cover 70 between the blade installation portion 73.The free end 86 of wooden partition 49 from the bottom 85 towards feed rolls 37 vertically to downward-extension.On fore-and-aft direction, the free end 86 of wooden partition 49 is positioned between the front of the contact site X of pressure section 55 contact developer rolls 38 (seeing Figure 12) of thickness adjustment sheet 39 and feed rolls 37.Especially, the sponge roller 51 of feed rolls 37 vertically aligns in the bottom 85 of wooden partition 49.
Therefore, wooden partition 49 is from top to bottom vertically to downward-extension so that pressure section 55 and the feed rolls 37 of free end 86 close thickness adjustment sheets 39.With respect to vertical direction, the free end 86 of wooden partition 49 extends below pressure section 55 and is separated from feed rolls 37.Further, upper end 83 and the bottom 85 of thickness adjustment sheet 39 and wooden partition 49 are supported on the top cover 70 respectively, and lower end separately 84 and free end 86 extend towards feed rolls 37.Therefore, top cover 70, thickness adjustment sheet 39 and wooden partition 49 form (that is, towards feed rolls 37) xsect of narrowing down to the bottom and are rectangular shape basically.Here, the free end 86 of the lower end 84 of thickness adjustment sheet 39 and wooden partition 49 is separated on fore-and-aft direction slightly.
As shown in Figure 12, the free end 86 of wooden partition 49 is positioned so that the bee-line A between the surface of the sponge roller 51 on the free end 86 of wooden partition 49 and the feed rolls 37 is shorter than the bee-line B between the surface of the contact site X of the pressure section 55 contact developer rolls 38 of thickness adjustment sheet 39 and sponge roller 51.
Therefore, as shown in Figure 13, the free end 86 of wooden partition 49 is located in the contact site X below of the pressure section 55 contact developer rolls 38 of thickness adjustment sheet 39.
When driving force from motor (not diagram) when being transfused to stirrer turning axle 46, stirrer turning axle 46 is driven along the rotation of the clockwise direction among Figure 11 so that agitating member 47 moves with the circular direction around stirrer turning axle 46 by toner container cavity 41.Like this, agitating member 47 stir the toner that is contained in the toner container cavity 41 and by uncovered 43 to the development chamber 42 some toners of discharge.
42 toners of discharging are supplied on the developer roll 38 by the feed rolls 37 of rotating to the development chamber by uncovered 43.At this moment because the surface of two rollers moves with opposite direction at contact point, toner between feed rolls 37 and developer roll 38 by the forward triboelectric charging.Along with the rotation of developer roll 38, be supplied to toner on the developer roll 38 is moved upwards up to the pressure section 55 contact developer rolls 38 of thickness adjustment sheet 39 above the sidepiece of feed rolls 37 contact site X from feed rolls 37.At this contact site X, between the pressure section 55 of toner process thickness adjustment sheet 39 and the rubber rollers 53 of developer roll 38.At this moment, in order to keep the thin layer of uniform thickness on the surface of rubber rollers 53, the excess enthalpy part of toner is peeled off in pressure section 55.
In above-mentioned developer box 30, wooden partition 49 is disposed between thickness adjustment sheet 39 and the partition wall 40 and is used for thickness adjustment sheet 39 is separated from toner container cavity 41 above feed rolls 37.It is shorter than the bee-line B between the sponge roller 51 of the contact site X of the pressure section 55 contact developer rolls 38 of thickness adjustment sheet 39 and feed rolls 37 that the free end 86 of wooden partition 49 is positioned as the free end 86 of wooden partition 49 and the bee-line A between the sponge roller 51 on the feed rolls 37.
Toner rotates so that the forward triboelectric charging between the developer roll 38 that contact area moves with opposite direction of the surface of roller in feed rolls 37 with equidirectional.Along with the rotation of developer roll 38, the toner of some chargings arrives contact site X.At this moment, thickness adjustment sheet 39 peels off unnecessary charged toner to form the thin layer of uniform thickness at developer roll 38.The unnecessary toner that is peeled off by thickness adjustment sheet 39 can be maintained between thickness adjustment sheet 39 and the wooden partition 49 and can be carried at again the surface of developer roll 38 and regulated by thickness adjustment sheet 39.
As a result, because the unnecessary toner that is peeled off by thickness adjustment sheet 39 can be prevented from getting back to toner container cavity 41, so the charging that might control reliably toner is to prevent the decline of picture quality.
Further, in the developer box 30 of the embodiment of explanation, partition wall 40 is disposed in the developer side shell 36 centre on the fore-and-aft direction so that developer side shell 36 is separated into toner container cavity 41 and development chamber 42, and wooden partition 49 is disposed in the development chamber 42.Therefore, when toner flowed from the zone between thickness adjustment sheet 39 and the wooden partition 49, partition wall 40 can prevent from being got back to toner container cavity 41 by the unnecessary charged toner that thickness adjustment sheet 39 peels off.
Therefore, charged toner can be maintained in the development chamber 42, thereby prevents that further charged toner from turning back to toner container cavity 41.As a result, might control more reliably the charging of toner and further prevent the decline of picture quality.
Further, wooden partition 40 is arranged to such an extent that bottom 85 is connected to the top cover 70 of developer side shell 36, and free end 86 is disposed in the contact site X of pressure section 55 contact developer rolls 38 of thickness adjustment sheet 39 and feed rolls 37 between the front side on the fore-and-aft direction.
Have such structure, even when the unnecessary charged toner of being peeled off by thickness adjustment sheet 39 flows and flows forward from the free end 86 of wooden partition 49 along wooden partition 49, charged toner begins to contact supplies the feed rolls 37 of toner to the developer roll 38 again.Therefore, by simple structure, charged toner is securely held between thickness adjustment sheet 39 and the wooden partition 49, thereby prevents that reliably charged toner from turning back to toner container cavity 41.
In the developer box 30 of embodiment of explanation, thickness adjustment sheet 39 from the upper end 83 to the lower end 84 little by little near wooden partition 49, and be arranged in the rubber rollers 53 of pressure section 55 by the Elastic Strength Pressure contact developer roll 38 of main blade member 54 on the lower end 84.Therefore, such simple structure can prevent from flowing through the free end 86 of wooden partition 49 in the unnecessary charged toner that contact site X is peeled off by the pressure section 55 of thickness adjustment sheet 39 towards toner container cavity 41 reliably, thereby prevents that further charged toner from turning back to toner container cavity 41.
Further, in above-mentioned developer side shell 36, the front and back rib 88 that intersects and cross rib 89 are arranged on the top cover 70 to form trellis.In addition, forward teat 90 in front near top cover 70 is disposed in from the front end of two nearest front and back ribs 88 of the transverse center of top cover 70, and stage portion 91 and side direction teat 100 are arranged on two nearest front and back ribs 88 of the outside widthwise edge of top cover 70, and back step 93 is disposed in the rear end of two front and back ribs 88.
Have such structure, the outmost limit of the grid that is formed by the front and back rib 88 that intersects and cross rib 89 be implemented in the top uncovered 95 so that forward teat 90, side direction teat 100 and back step 93 contact the corresponding inside on top uncovered 95 surperficial.Therefore, top cover 70 can be installed in accurately on the main casing 87 so that be arranged on wooden partition 49 on the top cover 70 and can be arranged in accurately desirable position in the developer side shell 36.
Be disposed in from the back step 93 of the rear end of two nearest front and back ribs 88 of the widthwise edge of top cover 70, be supported on position on the sidewall 69 at blade installation portion 73, namely, with respect to the position that transverse center has high rigidity, the transverse end of contactor blade installation portion 73.Therefore, this structure reaches stable location, has improved the assembly precision of top cover 70 on main casing 87.
Further, be disposed in the forward teat 90 of the front end of ribs 88 before and after nearest two of the transverse center of top cover 70 at the lateral centre contact antetheca 72 near antetheca 72, antetheca 72 has less rigidity and more likely more crooked than the end of the antetheca 72 that is supported by sidewall 69 herein.Therefore, this structure can prevent the bending of gear cap 82 on transverse center.
When the size Control of the contact area between top cover 70 and main casing 87 must be by strict implement, as mentioned above, the effort that reaches this control can not be local being reduced owing to control.
In the developer box 30 of embodiment of explanation, because is moving with the direction with the surface opposite of developer roll 38 with the zone of developer roll 38 contacts on the surface of feed rolls 37, toner can be by reliably triboelectric charging.Further, developer roll 38 rotation is so that mobile backward in the first half of developer roll 38 from the toner of feed rolls 37 supplies, thereby toner moves up to arrive the contact site X of the pressure section 55 contact developer rolls 38 of thickness adjustment sheet 39 above the sidepiece of feed rolls 37.Therefore, because the contact area of the surperficial between of feed rolls 37 and the surperficial counter motion of developer roll 38, the surface of feed rolls 37 is also backward motion of half part thereon also.Therefore, feed rolls 37 can easily be returned the unnecessary charged toner of having been peeled off by thickness adjustment sheet 39 to developer roll 38, and feed rolls 37 can also easily be supplied the uncharged toner that is contained in the toner container cavity 41 to developer roll 38.
In the embodiment of above-mentioned explanation, developer box 30 is detachably mounted on the bulging box 27 to form handle box 20, and handle box 20 is detachably mounted in the main shell 2.Yet, also photosensitive drums 28, charger 29, transfer roll 31, cleaning element 32 and this base part might be set in main casing 2, and remove drum box 27, and developer box 30 removably is installed in main shell 2.Also might remove bulging box 27 and developer box 30 and photosensitive drums 28, charger 29 transfer rolls 31, cleaning element 32 and this base part are set in main shell 2, also have simultaneously toner container cavity 41, developer roll 38, feed rolls 37, thickness adjustment sheet 39 and wooden partition 49.
Comprise that the toner sensor (not having diagram) of light-emitting component and light receiving element is disposed in the outside of shell 36, relative with toner detection window 44.The detection light that light-emitting component sends enters toner container cavity 41 by one of toner detection window 44.By after the toner container cavity 41, survey light and discharge and received by light receiving element by another toner detection window 44.Detect the detection time that light stirs the toner in the toner container cavity 41 by two toner detection windows 44 and following stirrer 45 by measuring, the toner sensor is configured to detect the amount that remains in the toner in the toner container cavity 41.
Next,, according to the embodiment of an explanation stirrer 45 and wiper 48 are described in detail to 24C with reference to Figure 16.
Except above-mentioned turning axle 46, agitating member 47 and grid 49, as shown in Figure 16, stirrer 45 also comprises every tabula rasa 89 and guided plate 90.
Agitating member 47 comprises the sheet support member 65 that outwards extends radially from turning axle 46, and is installed in the thin slice 66 on the sheet support member 65.Sheet support member 65 comprise a plurality of on the Width of turning axle 46 the spaced transverse slat that separates (cross plate) 68 each other, and be connected to the sheet support plate 69 of turning axle 46 by transverse slat 68.Each transverse slat 68 has the bottom that is connected to turning axle 46 and radially stretches out from it.
As shown in Figure 16, thin slice 66 is fixed to sheet support plate 69 with respect to the bearing of trend of transverse slat 68 with predetermined obtuse angle.As shown in Figure 17, broad ways just forms in transverse slat 68 integral body of outermost transverse slat 68 inboards on tabula rasa 89 same transverse end that are positioned at turning axle 46.As shown in Figure 16, every tabula rasa 89 have plate shape and with the rectangular plane of the axial direction of turning axle 46 in extend.Play a part to intercept at regular intervals the detection light that is sent by the toner sensor every tabula rasa 89, to increase the accuracy of detection of residue toner.
Guided plate 90 on the direction relative with the direction of thin slice 66 from turning axle 46 outside radial extensions.Guided plate 90 has the rectangular-plate-shaped of uniform thickness basically and is formed on the axial centre zone of turning axle 46, extends in the direction relative with the bearing of trend of transverse slat 68.When stirrer 45 rotation, guided plate 90 plays a part on its Width at toner container cavity 41 interior uniform distribution toners, and saves bit by bit toner so that toner flows towards two transverse end of toner container cavity 41.
As shown in figure 23, the first cut portion 76 is formed in the back up pad 72.The first cut portion 76 is U-shaped basically in upward view.The first cut portion 76 is formed on along back up pad 72 from turning axle 46 parts that are extended the relative back up pad 72 of direction and clamping plate 73 of extending.The first cut portion 76 from respect to the downstream end on the direction of insertion of wiper 48 (turning axle 46 axially on inside end) towards the upstream extremity of direction of insertion (towards turning axle 46 axially on the outside).Here, be extended direction and comprise that bottom from the back up pad 72 that is connected to turning axle 46 is to the free-ended direction of back up pad 72 and the direction from the top to the bottom.
As shown in Figure 20 and 22, the first cut portion 76 is round the central part 77 of back up pad 72.The projection 78 that is arranged on the central part 77 faces toward on the direction of clamping plate 73 inwardly outstanding in back up pad 72.
As shown in Figure 18 and 19, clamping plate 73 from the mid point of back up pad 72 on bearing of trend to its top across and pass space corresponding to the thickness of wiper 48 facing to back up pad 72.
As shown in Figure 20 and 22, clamping plate 73 are formed in the part relative with the first cut portion 76 and are U-shaped basically in vertical view, identical with the first cut portion 76 approx in shape.The second cut portion 79 be formed on be formed on back up pad 72 in the zone of the relative clamping plate 73 of central part 77 in and surrounded by clamping plate 73.
The part of the clamping plate 73 that extend at the bearing of trend of back up pad 72 along the upstream side of the second cut portion 79 on direction of insertion is as pressure plare 80.Pressure plare 80 plays a part to prevent that wiper 48 from floating back up pad 72.
Connecting wall 74 is parallel to each other on the direction of insertion and separated from one another with the pre-fixed gap corresponding to the width of wiper 48 on the bearing of trend of back up pad 72.Connecting wall 74 is connected to back up pad 72 two ends of clamping plate 73 on bearing of trend.
Have such structure, the slit 81 that is used for reception wiper 48 is formed on fixed component 49 and supported plate 72, clamping plate 73 and connecting wall 74 restrictions.
The sheet support member 65 of turning axle 46, agitating member 47, fixed component 49, integrally formed by the hard synthetic resin such as ABS resin every the guided plate 90 of tabula rasa 89 and stirrer 45, and thin slice 66 is thin slices of the softness that formed by the resin such as polyethylene terephthalate (polyethylene terephthalate).
As shown in Figure 20, wiper 48 is plate shapes and is rectangle basically in vertical view.Wiper 48 is formed by the elastic component such as the softness of amino ester rubber (urethane rubber).
As shown in Figure 19, wiper 48 be formed with the bearing of trend that is formed on the slit 81 in the fixed component 49 on the essentially identical width of width (with direction of insertion and the rectangular direction of thickness direction on the size of wiper 48).Coexist back up pad 72 of the thickness of wiper 48 is identical basically in the face of the uncovered width that is formed by slit 81 on the direction of clamping plate 73, as shown in Figure 18 and 19.The degree of depth in slit 81 about twice of growing up on the Length Ratio direction of insertion of wiper on the direction of insertion is shown in Figure 18 and 21.
Next, the process of installation wiper 48 is described with reference to Fig. 7,8 and 11 in fixed component 49.
As illustrated in fig. 20, wiper 48 is positioned facing to slit 81 and is inserted into slit 81 along the direction of arrow.Figure 24 A is to the process of 24C explanation with wiper 48 inserted into gaps 81.The downstream end of wiper 48 along direction of insertion by the pressure plare 80 of back up pad 72 and clamping plate 73 between after, as shown in Figure 24 A, downstream end contact projection 78.When wiper 48 was further inserted into, wiper 48 bendings were so that the downstream end of wiper 48 slips over projection 78, as shown in Figure 24 B.As shown in Figure 24 C, wiper 48 has been inserted into until downstream end contact confinement plate 75, and it prevents on direction of insertion further mobile downstream.At this moment, projection 78 is received in logical uncovered 84 so that penetrate wiper 48 at identical thickness direction.When projection 78 was received in logical uncovered 84, wiper 48 was inserted between back up pad 72 and the clamping plate 73, therefore, is installed in the fixed component 49.
When wiper 48 was installed in the fixed component 49, as shown in Figure 21, projection 78 was inserted through through hole 84, prevents that wiper 48 is removed from fixed component 49.Further, pressure plare 80 restriction wipers 48 rise from back up pad 72, thereby wiper 48 is fixed in the fixed component 49.
Yet, using the sharp-pointed needle-like fishhook 85 shown in the virtual image among Figure 24 C, wiper 48 can be removed from fixed component 49.Fishhook 85 is inserted through fishhook insertion section 82 and between the recess 83 of the downstream end of wiper on the direction of insertion 48 and back up pad 72, so that the downstream end of wiper 48 is lifted from back up pad 72.In this state, through hole 84 can be lifted from projection 78 so that wiper 48 can be pulled out subsequently slit 81 and be removed from fixed component 49.
In above-mentioned stirrer 45, in the slit 81 that is inserted into fixed component 49, wiper 48 is fixed on the fixed component 49, therefore, is fixed to by fixed component 49 on the agitating member 47 of stirrer 45.Further, fixed component 49 is integrally formed with agitating member 47.Therefore, by not needing special parts such as double-sided belt or thrust nut with the simple assembling to the agitating member 47 of fixing wiper 48, wiper 48 can be fixed on the agitating member 47.Therefore, such structure decrease the parts that need quantity and improved the efficient of assembly manipulation.Further, owing to be fixed on the fixed component 49 by inserted into gap 81 wipers 48, wiper 48 can easily be removed, so that wiper 48 is more suitable for reclaiming.
Further, with respect to wiper 48 be inserted into therebetween back up pad 72 and the relative section of clamping plate 73, be formed in the back up pad 72 facing to the first cut portion 76 of clamping plate 73, and be formed in the clamping plate 73 facing to the second cut portion 79 of back up pad 72.In other words, only have back up pad 72 and one of clamping plate 73 be formed on wiper 48 be inserted into therebetween back up pad 72 and the relative section of clamping plate 73, thereby when moulded support plate 72 and clamping plate 73, be convenient to removing of member.Further, the toner that enters slit 81 can easily be eliminated between payback period.
When wiper 48 was inserted into the slit 81 that is formed in the fixed component 49, projection 78 was inserted into the through hole 84 that is formed in the wiper 48, thereby more safely wiper 48 is fixed on the fixed component 49, and by extending, to agitating member 47.
When wiper 48 is inserted into fixed component 49 downstream, the direction guiding wiper 48 that the inclined surface 86 of projection 78 is tilting.Downstream end at wiper 48 slips at protruding 78 o'clock, and projection 78 begins to insert the through hole 84 of wiper 48.This structure can be installed wiper 48 smoothly.
After projection 78 was inserted into the through hole 84 of wiper 48, because the downstream of inclined surface 86 on the direction that removes wiper 48 of projection 78, projection 78 prevented removing of wiper 48.
Further, when wiper 48 was installed in the fixed component 49, pressure plare 80 restriction wipers 48 floated back up pad 72, thereby prevent reliably the through hole 84 slippage projections 78 of wiper 48.Like this, wiper 48 can firmly be fixed.
Further, when being installed in wiper 48 in the fixed component 49, confinement plate 75 restriction wipers 48 are inserted too much downstream, thus reliably fixedly wiper 48 in the precalculated position.
In order to remove wiper 48 from fixed component 49, fishhook 85 is inserted through fishhook insertion section 82, so that development chamber 42 can be easy to divest from back up pad 72.Like this, be convenient to reclaim.
Further, because wiper 48 forms by resilient material such as the urethane rubber of softness, wiper 48 is easily crooked when being installed into or removing from fixed component 49, makes logical uncovered 84 can be embedded into or remove from projection 78.As a result, this structure is convenient to wiper 48 inserted into gaps 81 and can be improved the efficient of assembly manipulation.This structure also is convenient to wiper 48 and 81 is removed from the slit, makes wiper 48 be more suitable for reclaiming.
Because the developer box 30 of the embodiment of explanation can be consisted of and more efficient assembling process can be provided by parts still less, as mentioned above, the handle box 20 of developer box 30 and be equipped with the laser printer 1 of handle box 20 can be with lower cost manufactured and be more suitable for reclaiming is equipped with.
By using the slit 81 that is used for wiper 48 is inserted fixed component 49 with fixedly wiper 48 is to the structure of fixed component 49 in toner container cavity 41, above-mentioned developer box 30 has following effect.By eliminating the needs of this particular component, this structure prevents from entering the toner that is supplied to develop that is contained in the toner container cavity 41 from the mishmash of double-sided belt or other particular component.Further, this mechanism prevents the chemical reaction between the tack coat of toner and double-sided belt.
In the embodiment of above-mentioned explanation, on projection 78 pressure plares 80 that are disposed on back up pad 72 and the clamping plate 73.Yet projection 78 can change into and being disposed on the clamping plate 73, and pressure plare 80 is disposed on the back up pad 72.
In the embodiment of above-mentioned explanation, through hole 84 is formed in the wiper 48 to insert projection 78.Yet the acceptance division of the present invention that is used for reception projection 78 needs not to be through hole 84, if acceptance division can be received in the projection 78 that is inserted on the thickness direction of wiper 48.For example, be that (cut through) wiper 48 can be run through at thickness direction in the slit 87 of basically U-shaped in vertical view, as shown in Figure 25 A.Have this structure, groove 87 can be received in inserts the projection 78 of wearing wiper 48 on the Width, as illustrated among Figure 25 B.
Further, in the embodiment of above-mentioned explanation, the guided plate 90 of stirrer 45 has been formed uniform thickness.Yet, might change in the central area (with respect to the Width of turning axle 46) into and form thicker and become thinner guided plate 90 towards transverse end (outer end of turning axle 46 on Width).When toner was stirred in stirrer 45 rotations, the surface of striking off the guided plate 90 of toner was formed the surface of inclination, and the central part of guided plate 90 is at upstream side in the sense of rotation of stirrer 45 from the teeth outwards, and 90 two transverse end of guided plate are in the downstream.
The guided plate 90 that is formed in this way can guide toner towards more smooth the flowing of cross side of toner container cavity 41.Therefore, guided plate 90 can distribute toner more equably on the Width of toner container cavity 41 in toner container cavity 41.
Notice that thin slice 66 and wiper 48 are from omitting the stirrer 45 shown in Figure 26.
Next, will be described in detail to 30 axle support units 250 with reference to Figure 27.As will be described in detail below, axle support unit 250 is disposed in the inwall in developer-accommodating chamber 222.Axle support unit 250 comprises for the guiding groove 250 that stirrer shaft 223a is installed, and is used for rotatably keeping the maintaining part 250b (seeing Figure 28) of stirrer shaft 223a.
The end of stirrer shaft 223a is rotatably remained on the through hole (not diagram) in the inwall that is formed on the developer-accommodating chamber 222 relative with the inwall that is provided with axle support unit 250.The same side of stirrer shaft 223a is implemented into gear (not diagram).The motor (not diagram) that is arranged in the laser printer 1 arrives stirrer shaft 223a by gear transmission driving force.
As shown in Figure 27, the other end of stirrer shaft 223a is rotatably remained in the axle support unit 250.As shown in Figure 28 and 30, axle support unit 250 comprises for the maintaining part 250b that rotatably keeps stirrer shaft 223a, be used for towards maintaining part 250b guide downwards stirrer shaft 223a the end guiding groove 250a and between maintaining part 250b and guiding groove 250a, form the border and be used for the 250c of restriction section that moves upward that restriction remains on the stirrer shaft 223a of maintaining part 250b.
As shown in Figure 30, maintaining part 250b and guiding groove 250a form recessed portion in the inwall in developer-accommodating chamber 222.Recessed guiding groove 250a is more shallow than recessed maintaining part 250b in recessed direction as shown in figure 30.
When developer-accommodating chamber 222 that stirrer 223 is packed into was interior, guiding groove 250a had the axial plane effects on surface 501a that faces mutually with the axle head of stirrer shaft 223a.Axial plane effects on surface 501a is tilting downwards and with the direction of recessed opposite direction.
The 250c of restriction section has the inclined surface 501c that forms continuously with axial plane effects on surface 501a.Inclined surface 501c is downward-sloping, namely, towards maintaining part 250b and with the direction of recessed opposite direction on away from axial plane effects on surface 501a.
Introducing surface 254 also is formed on the inwall in developer-accommodating chamber 222.Introduce surface 254 and tilt along the recessed direction towards guiding groove 250a from the position darker than guiding groove 250a, and form continuously with uncovered limit 502a in the top of axial plane effects on surface 501a.
As shown in Figure 28, guiding groove 250a has be used to being limited in stirrer shaft 223a by the side surface 503a of the motion of stirrer shaft 223a on the rectangular direction of channeling direction of maintaining part 250b guiding.Space 250e is formed between the side surface 503a and the 250c of restriction section of guiding groove 250a.Space 250e is less than the diameter of stirrer shaft 223a.
The axial direction with stirrer shaft 223a meet at right angles and on the xsect that obtains maintaining part 250b have polygon-shaped.In this embodiment, maintaining part 250b is square basically at this xsect.
With the rectangular direction of the channeling direction of stirrer shaft 223a on the width of guiding groove 250a and maintaining part 250b be identical.
As shown in Figure 27, transparent window 251 (only shows one in Figure 27; Another is arranged in the inwall in the developer-accommodating chamber 222 relative with the wall that is provided with axle support unit 250) be arranged in the sidewall in developer-accommodating chamber 222.The light source (do not have show) that is arranged in developer box 216 outsides is used for detecting residue toner amount in the developer-accommodating chamber 222 by transparent window 251 transmitting beam.For clean transparent window 251, soft wiper 253 is disposed in and is used for contacting slidably transparent window 251 on the stirrer 223 when stirrer 223 rotation.Chamfered portion 260 is formed on the limit by the axle support unit 250 of wiper 253 contact of softness.
Next, with reference to Figure 30, the operation that stirrer 223 is installed in developer-accommodating chamber 222 will be described.At first, the end of stirrer shaft 223a is implemented into the through hole (not diagram) that is formed in the developer-accommodating chamber 222.Next, the other end of stirrer 223 is lowered with limit 502a and contacts.The other end of guiding groove 250a guiding stirrer shaft 223a is towards the 250c of restriction section when stirrer shaft 223a is crooked.Next, the other end of stirrer shaft 223a is guided downward along inclined surface 501c, forces like this other end of stirrer shaft 223a to be moved upwards up to the 50c of restriction section in the direction facing to recessed direction.When the other end of stirrer shaft 223a is pushed down, the end slips over the 250c of restriction section and is installed into maintaining part 250b.At this moment, stirrer shaft 223a recovers straight extension.
Owing to the guiding groove 250a on the inwall that is formed on developer-accommodating chamber 222 is narrower than maintaining part 250b on recessed direction, stirrer shaft 223a can be directed from narrow position towards the 250c of restriction section.Reduce like this amount that stirrer shaft 223a must bending slips over the 250c of restriction section, thus with compare with the load that maintaining part 250b applies when recessed direction is formed same depth as guiding groove 250a, reduced the load that is applied to stirrer shaft 223a.
Since the 250c of restriction section have be connected to for downward-sloping and with the direction of recessed opposite direction on the inclined surface 501c of axial plane effects on surface 501a, stirrer shaft 223a slight curvature when the end of stirrer shaft 223a slips over the 250c of restriction section.As a result, this structure can reduce the load that is applied on the stirrer shaft 223a.
The inwall in developer-accommodating chamber 222 comprises to the introducing surface 254 that guiding groove 250a tilts and the open end that is connected to the top of axial plane effects on surface 501a.Therefore, stirrer shaft 223a can be directed to the open end at the top of axial plane effects on surface 501a smoothly.
Meet at right angles and on the xsect that obtains at the axial direction with stirrer shaft 223a, maintaining part 250b is square basically.Therefore, the outer surface point of stirrer shaft 223a contact maintaining part 250b reduces being created in the outer surface of stirrer shaft 223a and the friction force between the maintaining part 250b.
By with the rectangular direction of the channeling direction of stirrer shaft 223a on form guiding groove 250a and maintaining part 250b with identical width, the space that guiding groove 250a is required is minimum.
The axial plane effects on surface 501a of guiding groove 250a with the direction of recessed opposite direction on downward-sloping.Have such structure, in the time of in being installed in developer-accommodating chamber 222, stirrer shaft 223a is by more crooked, and therefore less load is applied on the stirrer shaft 223a.
Although described the present invention with reference to specific embodiments, under the condition that does not deviate from scope of the present invention, can do various distortion for those skilled in the art.
Claims (8)
1. developer box comprises:
Developer with the outer surface that carries developer carries roller, and described developer carries roller and is configured to around the turning axle rotation; With
Have the position that wherein is formed with uncovered and the exposure in uncovered and support the shell that developer carries roller, uncovered have at upwardly extending edge, the side that is parallel to described turning axle, described shell comprises strenthening member, described strenthening member substantially formed box-like and with uncovered edge whole installation to reinforce described edge
Described strenthening member and the first wall (82), the second wall (83), the 3rd wall (84) and wall (84) whole installation, described the first wall (82) has first end and second end relative with described first end along the direction that described uncovered described edge extends and extends at described the first wall, described the second wall (83) extends along described uncovered described edge, towards described the first wall, and the direction of extending at described the second wall has the 3rd end and four end relative with described the 3rd end, described the 3rd wall (84) connects described first end and described the 3rd end, and described wall (84) connects described the second end and described the 4th end;
Wherein strenthening member further comprises the 5th wall (85), and described the 5th wall (85) is along described uncovered described edge extension and connect described the first wall and described the second wall,
Wherein said the first wall, described the second wall and described the 5th wall with the xsect of the direction quadrature that extends along uncovered longitudinal edge in form three limits of rectangle.
2. developer box as claimed in claim 1, wherein said the first wall and described the second wall extend along the turning axle of developer roll.
3. developer box as claimed in claim 1 further comprises being arranged on the uncovered edge and in order to prevent that developer is configured to stop the sheet members in described space by the air gap leakage that uncovered limit and developer carry between the roller.
4. developer box as claimed in claim 3, wherein uncovered edge with the xsect of the direction quadrature that extends along uncovered edge in have the stepped form that comprises a plurality of steps; And wherein sheet members is fixed on than the step of developer from the downstream of the direction of uncovered leakage and is positioned on the step of upstream, thereby aligns with the downstream edge of this upstream step.
5. developer box as claimed in claim 1, thus wherein developer to carry roller supported in the enclosure by being formed on uncovered being projected into outside the shell wherein.
6. developer box as claimed in claim 1, its housing comprise with strenthening member and forming continuously and when the guiding elements of leader record medium when being carried at developer and carrying developer image that the developer on the roller forms and be transferred on the recording medium.
7. developer box as claimed in claim 6 wherein arranges a plurality of guiding elements, and guiding elements arranges on the direction that the bearing of trend with strenthening member intersects at intervals.
8. imaging device comprises:
The developer box acceptance division; With
Developer box as claimed in claim 1, wherein developer box is detachably mounted in the developer box acceptance division.
Applications Claiming Priority (12)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2005128502 | 2005-04-26 | ||
| JP2005128502A JP4586620B2 (en) | 2005-04-26 | 2005-04-26 | Developing cartridge, process cartridge, and image forming apparatus |
| JP2005-128502 | 2005-04-26 | ||
| JP2005138729A JP2006317623A (en) | 2005-05-11 | 2005-05-11 | Developing cartridge, process cartridge, and image forming apparatus |
| JP2005138729 | 2005-05-11 | ||
| JP2005-138729 | 2005-05-11 | ||
| JP2005140893 | 2005-05-13 | ||
| JP2005-140893 | 2005-05-13 | ||
| JP2005140893A JP2006317754A (en) | 2005-05-13 | 2005-05-13 | Developing cartridge and image forming apparatus |
| JP2005164321A JP2006337839A (en) | 2005-06-03 | 2005-06-03 | Developing cartridge, process cartridge and image forming apparatus |
| JP2005164321 | 2005-06-03 | ||
| JP2005-164321 | 2005-06-03 |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100792754A Division CN100514217C (en) | 2005-04-26 | 2006-04-26 | Developer cartridge for image-forming device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101556453A CN101556453A (en) | 2009-10-14 |
| CN101556453B true CN101556453B (en) | 2013-05-01 |
Family
ID=37195160
Family Applications (4)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100792754A Active CN100514217C (en) | 2005-04-26 | 2006-04-26 | Developer cartridge for image-forming device |
| CN 200910145248 Active CN101561648B (en) | 2005-04-26 | 2006-04-26 | Developer cartridge for image forming device |
| CN 200910145258 Active CN101556453B (en) | 2005-04-26 | 2006-04-26 | Developing cartridge of image forming apparatus |
| CN 200620112676 Expired - Lifetime CN200965624Y (en) | 2005-04-26 | 2006-04-26 | Photographic developer box for image forming device |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2006100792754A Active CN100514217C (en) | 2005-04-26 | 2006-04-26 | Developer cartridge for image-forming device |
| CN 200910145248 Active CN101561648B (en) | 2005-04-26 | 2006-04-26 | Developer cartridge for image forming device |
Family Applications After (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620112676 Expired - Lifetime CN200965624Y (en) | 2005-04-26 | 2006-04-26 | Photographic developer box for image forming device |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4586620B2 (en) |
| CN (4) | CN100514217C (en) |
Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4586620B2 (en) * | 2005-04-26 | 2010-11-24 | ブラザー工業株式会社 | Developing cartridge, process cartridge, and image forming apparatus |
| JP4586916B2 (en) | 2008-09-29 | 2010-11-24 | ブラザー工業株式会社 | Stirring member and developing cartridge |
| JP5299045B2 (en) * | 2009-04-14 | 2013-09-25 | ブラザー工業株式会社 | Stirring member and developing cartridge |
| US8515309B2 (en) | 2009-12-25 | 2013-08-20 | Brother Kogyo Kabushiki Kaisha | Process cartridge, developing cartridge and image forming apparatus |
| JP5418314B2 (en) * | 2009-12-25 | 2014-02-19 | ブラザー工業株式会社 | Developing device and image forming apparatus |
| CN201638008U (en) * | 2010-03-03 | 2010-11-17 | 珠海天威飞马打印耗材有限公司 | Carbon powder box and treatment box |
| JP5888139B2 (en) | 2011-07-08 | 2016-03-16 | ブラザー工業株式会社 | Developer container and image forming apparatus |
| JP6341106B2 (en) * | 2015-01-30 | 2018-06-13 | ブラザー工業株式会社 | Developer cartridge |
| JP6582972B2 (en) * | 2015-12-25 | 2019-10-02 | ブラザー工業株式会社 | Developer cartridge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485244A (en) * | 1992-08-03 | 1996-01-16 | Star Micronics Co., Ltd. | Electrophotographic apparatus with freely openable upper and lower housings |
| US6304735B1 (en) * | 1999-06-22 | 2001-10-16 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus having an electrically charged paper dust removing brush |
| CN200965624Y (en) * | 2005-04-26 | 2007-10-24 | 兄弟工业株式会社 | Photographic developer box for image forming device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08123192A (en) * | 1994-10-19 | 1996-05-17 | Fuji Xerox Co Ltd | Developing device |
| JPH0988443A (en) * | 1995-09-20 | 1997-03-31 | Kawai Musical Instr Mfg Co Ltd | Woody door and manufacturing therefor |
| US6360288B1 (en) * | 1997-10-17 | 2002-03-19 | Sun Microsystems, Inc. | Method and modules for control of pipelines carrying data using pipelines carrying control signals |
| JP4277370B2 (en) * | 1999-06-21 | 2009-06-10 | ブラザー工業株式会社 | Image forming apparatus and developing apparatus |
| JP2000250296A (en) * | 1999-02-24 | 2000-09-14 | Brother Ind Ltd | Developing device and image forming device |
| US6337956B1 (en) * | 1999-02-24 | 2002-01-08 | Brother Kogyo Kabushiki Kaisha | Developing device having toner agitation member and cleaning member cleaning light transmission window |
| JP2002367695A (en) * | 2001-06-06 | 2002-12-20 | Sumitomo Wiring Syst Ltd | Card edge connector |
| JP3995441B2 (en) * | 2001-10-12 | 2007-10-24 | 日本電産コパル株式会社 | Imaging device |
| JP2003280475A (en) * | 2002-03-25 | 2003-10-02 | Toyo Tire & Rubber Co Ltd | Blade structure for image forming apparatus, blade member loaded therewith and manufacturing method of blade structure for image forming apparatus |
-
2005
- 2005-04-26 JP JP2005128502A patent/JP4586620B2/en active Active
-
2006
- 2006-04-26 CN CNB2006100792754A patent/CN100514217C/en active Active
- 2006-04-26 CN CN 200910145248 patent/CN101561648B/en active Active
- 2006-04-26 CN CN 200910145258 patent/CN101556453B/en active Active
- 2006-04-26 CN CN 200620112676 patent/CN200965624Y/en not_active Expired - Lifetime
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5485244A (en) * | 1992-08-03 | 1996-01-16 | Star Micronics Co., Ltd. | Electrophotographic apparatus with freely openable upper and lower housings |
| US6304735B1 (en) * | 1999-06-22 | 2001-10-16 | Brother Kogyo Kabushiki Kaisha | Image forming apparatus having an electrically charged paper dust removing brush |
| CN200965624Y (en) * | 2005-04-26 | 2007-10-24 | 兄弟工业株式会社 | Photographic developer box for image forming device |
Non-Patent Citations (1)
| Title |
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| JP特开2005-70159A 2005.03.17 |
Also Published As
| Publication number | Publication date |
|---|---|
| CN200965624Y (en) | 2007-10-24 |
| CN100514217C (en) | 2009-07-15 |
| CN101561648A (en) | 2009-10-21 |
| JP2006308688A (en) | 2006-11-09 |
| JP4586620B2 (en) | 2010-11-24 |
| CN1854935A (en) | 2006-11-01 |
| CN101561648B (en) | 2013-01-02 |
| CN101556453A (en) | 2009-10-14 |
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