CN201087852Y - Carbon powder barrel for laser printer - Google Patents

Abstract

The utility model relates to a carbon powder cylinder for a laser printer, which comprises a powder storage chamber, a waste powder chamber and an airproof door, wherein, a powder outlet port is arranged on the bottom wall of the powder storage chamber, and a handle is arranged on the side wall of the powder storage chamber; one end of the airproof door is fixed on the handle; the corresponding end of the airproof door can be glidingly supported to the position of the end wall of the powder chamber corresponding to the handle; a communicating port is arranged on the airproof door; the slide contact state is kept between the airproof door and the outer surface of the bottom wall around the powder outlet port in a way that the airproof door can rotate around a center shaft of the handle. The communicating port is aligned with the powder outlet port at the position of the airproof door corresponding to a first angle of the center shaft of the handle. The communicating port is staggered with the powder outlet port at the position of the airproof door corresponding to a second angle of the center shaft of the handle. The carbon powder cylinder is simple in structure, and the capacity utilization efficiency of the powder storage chamber is high.

Description

The laser printer carbon powder tube

Technical field

The utility model relates to for example carbon dust tube of laser printer of electrophotographic image forming, particularly has the puddle support that is used to transmit carbon dust, is used to store and the powder-storage bin of supply toner and being used to holds the carbon dust tube of the waste powder hopper of the remaining carbon dust that is produced by photosensitive drums.

Background technology

Electrophotographic image forming, laser printer for example, its use value is by containing the photosensitive drums that the laser beam flying irradiation that predetermined information is arranged has predetermined potential, form electrostatic latent image at photosensitive drum surface, and then the developer of this electrostatic latent image with predetermined carbon dust and so on developed, be transferred to the carbon dust image that is about to obtain on the recording medium such as paper through developing, afterwards again the image fixing of transfer printing acquisition, become the visual image that naked eyes can be observed, realize the conversion of image---signal---between the image.

Common laser printer is provided with in its casing or includes charging roller, photosensitive drums, laser scanning mechanism, developer roll, transfer roll and fixing roller etc.These constitute the unit according to manufacturer's purpose of design and technical thought separately, finally form the different parts of integrated level.For example, consider factors such as task that each parts is born and technical life, charging roller, photosensitive drums etc. is prepared into an independently image forming process unit, or claim the sensitization processing unit; Laser scanning mechanism, transfer roll and fixing roller then directly are installed in the printer respectively; Developer roll and powder feeding roller etc. are integrated into an independently developing cell, also claim developing apparatus or Delevoping cartridge.After image-generating unit and developing cell are combined into a powder box that possesses image transitions ability and image developing ability simultaneously, standby in the printer of just can packing into.Perhaps in view of holding the disposable operating characteristic of storing up carbon dust in the developing apparatus, and the developing apparatus concentrated area that comprises developer roll, powder feeding roller, powder-storage bin and waste powder hopper etc. is designed to a relatively independent replaceable member, make it with comprising the image forming process unit of charging roller, photosensitive drums or comprising that the laser printer of image forming process unit keeps dismountable movable connection method.Perhaps further powder-storage bin and waste powder hopper are combined and be designed to individual member, make it keep dismountable movable connection method with the developing cell that comprises developer roll, powder feeding roller, for in time changing carbon dust, the durability that makes full use of parts such as developer roll, photosensitive drums facilitates.

In the course of the work, photosensitive drums charges to predetermined potential by charging roller, and response is formed corresponding to the electrostatic latent image for the treatment of print image on its cylindrical surface by the irradiation of laser scanning mechanism emitted laser bundle.

Store developer for example toner, ink powder or carbon dust within it in the container that the carbon dust tube is established, and utilize powder feeding roller and developer roll that carbon dust is sent to the corresponding region that photosensitive drums has electrostatic latent image, obtain the visual carbon dust image that naked eyes can be observed.

The carbon dust image that forms on the photosensitive drums is transferred on the paper of walking between photosensitive drums and the transfer roll slit by transfer roll, utilizes fixing roller that the carbon dust image on the paper is given permanent photographic fixing at last.

For the split type carbon dust tube that obtains because of the integrated level difference, it mainly utilizes the powder-storage bin of establishing in it to bear the storage of carbon dust and is transported to the task of developer roll, moreover utilizes waste powder hopper to hold the remaining carbon dust that is produced by photosensitive drums.This split type carbon dust tube and the developing cell that comprises developer roll, powder feeding roller, and the image forming process unit at photosensitive drums place are generally taked the separately mode of accumulating, then fit assembling during installation.After carbon dust tube and developing cell, image forming process unit assembling finish, be exposed to the photosensitive region of the outer development roll surface of developing chamber sidewall window with photosensitive drums on the image forming process unit, promptly exposed drum face adjacency, the carbon dust that developer roll carries is passed to photosensitive drums in this in abutting connection with the position, finishes the conversion of electrostatic latent image and carbon dust image.

Aforementioned carbon dust tube, its waste powder hopper are provided with for remaining carbon dust and flow into the useless powder inlet in it and control this inlet and open/close state of switch mechanism, and the remaining carbon dust that is produced by photosensitive drums must just can enter in the waste powder hopper through this inlet.For example CN200610107795.1 Chinese invention patent application discloses the developer box that a kind of maintenance supplies to the developer in the print process cartridge of image forming apparatus.This developer box comprises fresh developer chamber and waste developer chamber.The indoor maintenance new reagent of new reagent.Keep discarded developer in the waste developer chamber.Inlet is formed in the waste developer chamber.Discarded developer receives in the waste developer chamber by inlet.First opens and closes member opens and closes inlet.When control member navigated to primary importance, mechanism drove first and opens and closes member to open this inlet after developer box joins print process cartridge to.When control member navigated to the second place, mechanism drove first and opens and closes member to close inlet before developer box separates from print process cartridge.This carbon dust tube is after being loaded into image-forming assembly, the useless powder inlet of its carbon dust tube is inserted in the useless powder outlet of image-forming assembly, rotate the handle of carbon dust tube then, open carbon dust tube powder supply port and supply powder to developing cell, simultaneously by gear drive, guide member in the useless powder inlet of carbon dust tube is rotated simultaneously,, receive useless powder from the useless powder outlet of image-forming assembly to open the useless powder inlet of carbon dust tube.This carbon dust tube, the diaphragm seal that state was opened/closed to its control carbon dust tube powder supply port is designed to and the coaxial cylindrical stent of carbon dust tube powder supply port.This cylindrical stent is positioned at carbon dust tube inside, and offers the strip opening with carbon dust tube powder supply port correspondence.This built-in design, make the structure of carbon dust tube be tending towards complicated, be unfavorable for simplifying the assemble flow of carbon dust tube and the production procedure of carbon dust tube component parts, and cylindrical stent certainly will occupy the volume of fresh developer chamber, so that reduce effective storage space of carbon dust.

The utility model content

The utility model purpose is to provide a kind of carbon dust tube of laser printer, and this carbon dust tube can be simplified effectively and is used to control carbon dust tube meal outlet and opens/close the structural arrangements relation of the hermatic door of state with the carbon dust tube, and can keep effective storage powder volume of powder-storage bin.

According to above-mentioned purpose, laser printer carbon powder tube of the present utility model, comprise be used to store carbon dust and with its be supplied to developer roll powder-storage bin, be used to store up the waste powder hopper and the hermatic door of the remaining carbon dust that produces by photosensitive drums.Go at the carbon dust wound packages under the state of laser printer, the diapire that powder-storage bin is parallel to developer roll is provided with along being parallel to the meal outlet that the developer roll central axis direction is extended, and powder-storage bin is provided with rotating handle perpendicular to the sidewall of developer roll.Hermatic door one end is fixed on the handle, and its opposite end is supported on the end wall of powder-storage bin position with respect to handle slidably.Hermatic door is provided with the connected entrance with the meal outlet correspondence.Between hermatic door was with the diapire outside surface around the meal outlet, the mode of can thorny handle axis rotating with hermatic door kept the sliding contact state.In the first jiao position of hermatic door with respect to the handle axis, connected entrance aligns with meal outlet.In the second jiao position of hermatic door with respect to the handle axis, connected entrance staggers with meal outlet.

Preferably, aforementioned laser printer carbon dust tube in the connected entrance of its hermatic door, along the central axis direction of handle, is provided with at least one and is used to separate this connected entrance, and upwards connect the connection strap of this connected entrance two side at the revolution of handle.

More preferably, aforementioned laser printer carbon dust tube, its hermatic door is with being lined with elastomeric pad between the diapire outside surface around the meal outlet.This elastomeric pad can use the porosint of sponge and so on.

Laser printer carbon powder tube of the present utility model, hermatic door is fixed on the handle and end wall that lays respectively at the vertical two ends of carbon dust tube, diapire outside surface around hermatic door and meal outlet between the two simultaneously, with hermatic door can be thorny the handle axis mode of rotating, keep both to be in relative sliding contact state.Like this, when hermatic door was in first jiao of position with respect to the handle axis, connected entrance alignd with meal outlet, and then powder-storage bin is fed to carbon dust in the developing room of image-generating unit via meal outlet, connected entrance.When hermatic door was in second jiao of position with respect to the handle axis, connected entrance staggered with meal outlet, and the meal outlet of powder-storage bin is able to sealed door and closes.So, the hermatic door that is arranged at carbon dust tube outside not only can not take the inner space of powder-storage bin, keep higher carbon dust carrying capacity, and make that the corresponding construction of carbon dust tube is simplified, and then help simplifying the assemble flow of carbon dust tube and the production procedure of carbon dust tube component parts.

The drawing explanation

Fig. 1 the utility model laser printer carbon powder tube skeleton view one.

Fig. 2 the utility model laser printer carbon powder tube skeleton view two.

Fig. 3 the utility model laser printer carbon powder tube fragmentary, perspective view one.

Fig. 4 the utility model laser printer carbon powder tube fragmentary, perspective view two.

Fig. 5 the utility model laser printer carbon powder tube partial structurtes decomposing schematic representation.

Fig. 6 the utility model laser printer carbon powder tube fragmentary, perspective view three.

Fig. 7 the utility model laser printer carbon powder tube partial sectional view.

The double spiral tube skeleton view one of Fig. 8 a the utility model laser printer carbon powder tube.

The double spiral tube skeleton view two of Fig. 8 b the utility model laser printer carbon powder tube.

The end shield skeleton view of Fig. 9 the utility model laser printer carbon powder tube.

Embodiment

Describe the utility model laser printer carbon powder barrel structure and the course of work thereof in detail below in conjunction with accompanying drawing.In institute's drawings attached, identical mark is used to refer to identical parts, feature or structure.Embodiment introduce in the process at concrete structure or the parts reference illustration of only understanding the utility model laser printer carbon powder tube as those skilled in the art, those skilled in the art can also make the various equivalent technologies structures that do not exceed the utility model laser printer carbon powder tube technical scope and essence under the enlightenment of this technical scheme.If it is unfavorable limiting the protection domain that the utility model laser printer carbon powder tube claim included with this exemplary illustration thus, the equivalent technologies structural scheme that obtains under the technical solutions of the utility model enlightenment still belongs to the protection domain of the utility model laser printer carbon powder tube claim.

Referring to Fig. 1～9, the configuration state of the utility model laser printer carbon powder tube and related components thereof or feature is shown.

This carbon dust tube A mainly is made up of following member: powder-storage bin 1, waste powder hopper 2.

Referring to Fig. 1,2,3,5, the plastics that powder-storage bin 1 adopts tygon and so on prepare with molding mode as starting material.Its profile is long box shape approximately.It is formed by several side walls enclose, only on the casing long side direction, form uncovered 113 (seeing shown in Figure 5), and with the end cap 102 of shape correspondence in the mode that plugs each other with uncovered 113 combinations, again through welding or bonding rear enclosed, to be formed for holding the cavity of carbon dust.Wherein, under the state of unshowned laser printer, the long side direction of long casing 103 is parallel to the developer roll central axis direction of laser printer in carbon dust tube A load map.Among Fig. 1,2, end cap 102 is buckled on the corresponding buckle 107 (shown in Fig. 1,2,3) that long casing 103 corresponding positions are provided with by several bayonet socket 106 (see figure 3)s on it, and after their butt joints, pass through welding or bonding way maintenance sealing between the two in the position that end cap 102 and long casing 103 are in contact with one another.The long bottom sidewall of this long casing 103 outwards expands and is semicylinder 101 (seeing shown in Figure 5).The axial long side direction with long casing 103 of semicylinder 101 is consistent.At the position corresponding to semicylinder 101, the inner chamber of powder-storage bin 1 also is designed to the inner chamber that its xsect is the long casing form of semi-cylindrical form.On bottom sidewall, offer the window 104 (seeing shown in Figure 5) that extends axially certain-length along semicylinder 101 corresponding to powder-storage bin 1 half-cylindrical inner chamber.This window 104 be carbon dust tube A in docking scheme during unshowned printer image-generating unit, provide the carbon dust flow channel of carbon dust and so on developer to image-generating unit, also can be described as the meal outlet of carbon dust tube A.Window 104 axially has suitable length along semicylinder 101, usually this length and not shown laser printer developing roller length adaptation, therefore, window 104 just is provided with a reinforcement 105 that connects window 104 horizontal two walls along semicylinder 101 axially spaced-apart certain distances, to prevent window 104 deformation (seeing shown in Figure 5) takes place.

Referring to Fig. 3,4, in the half-cylindrical inner chamber of powder-storage bin 1, being provided with powder-storage bin 1 half-cylindrical internal chamber wall surface keeps the carbon dust puddle support 4 of sliding contact state (among Fig. 3,4, in order more to clearly illustrate the configuration state of carbon dust puddle support 4, do not draw the long casing 103 and semicylinder 101 parts of powder-storage bin 1.The reader can in conjunction with other accompanying drawing for example Fig. 1,2,5 understand the corresponding construction feature).Carbon dust puddle support 4 has the blade 401 with the half-cylindrical cavity shape correspondence of powder-storage bin 1.Blade 401 is fixed in the rotating shaft 402, and can rotate with rotating shaft 402 under the driving of the moment of torsion that laser printer provides.Blade 401 has with the window 104 of aforementioned carbon dust flow channel as the carbon dust tube A length along semicylinder 101 axial length correspondences, and it keeps in touch between the peripheral inwall of semicylinder 101 diametric external end edges with window 104.Under the assembled state of carbon dust tube A, an end of rotating shaft 402 passes powder-storage bin 1 and is connected with the handle 403 with leverage after with the relative sidewall in end cap 102 positions.The other end of rotating shaft 402 slidably is resisted against end cap 102 on the surface of powder-storage bin 1 inner chamber, perhaps be supported on the support port 111 that end cap 102 is provided with on vertical wall of powder-storage bin 1 inner chamber (referring to shown in Figure 7), and and then cross end cap 102 and penetrate waste powder hopper 2 backs and dock coaxially with turning axle 204 described below in rotatable mode.Like this, when transmission gear 405 receives rotary torque that printers transmit when ordering about turning axle 204 rotations, carbon dust puddle support 4 drives blades 401 rotations, makes the carbon dust in powder-storage bin 1 inner chamber be in fluffy mobile state.

Referring to Fig. 5,6, utilize the On/Off state of the hermatic door 3 control windows 104 that are positioned at powder-storage bin 1 outside.Hermatic door 3 is provided with the connected entrance 303 with window 104 correspondences.Hermatic door 3 is fixed on the handle 403 in the mode that is inserted in the docking groove 406 that is provided with on handle 403 cylinders by one end 301, its opposite end 302 is supported on the end wall of position with respect to handle 403 of powder-storage bin 1 slidably, exactly, be exactly on end cap 102 (see figure 6)s of powder-storage bin 1.Hermatic door 3 with can be thorny the handle 403 axis mode of rotating, keep with being in the sliding contact state between the diapire outside surface around the window 104.Like this, when hermatic door 3 turned to first jiao of position with respect to the axis of handle 403, connected entrance 303 was with window 104 alignment, and powder-storage bin 1 is communicated with extraneous by window 104, connected entrance 303.When hermatic door 3 turned to second jiao of position with respect to the axis of handle 403, connected entrance 303 staggered with window 104, and powder-storage bin 1 is communicated with extraneous toner passage and is closed.So, it serves as the rotation that axle is made certain angle with the half-cylindrical inner chamber of powder-storage bin 1 or the center line of handle 403 that the operator can control hermatic door 3 by handle 403, the connected entrance 303 that makes hermatic door 3 overlaps or alignment with the window 104 of aforementioned carbon dust flow channel as carbon dust tube A some or all ofly, the connected entrance 303 that perhaps makes hermatic door 3 staggers fully with the window 104 of aforementioned carbon dust flow channel as carbon dust tube A, to open or to close the window 104 of aforementioned carbon dust flow channel as carbon dust tube A.Under the state that connected entrance 303 staggers fully with the window 104 as the carbon dust flow channel of carbon dust tube A, hermatic door 3 has only with forming the sealing contact between the diapire outside surface around the window 104, can prevent that just carbon dust from leaking.In order to improve hermatic door 3 with the sealing characteristics between the diapire outside surface around the window 104, lining is established the elastomeric pad 112 of sponge and so between hermatic door 3 is with the diapire outside surface around the window 104 usually.This elastomeric pad 112 is adhered on the window 104 diapire outside surface on every side usually.Consideration for enhanced leaktightness door 3 self intensity, in the connected entrance 303 of hermatic door 3, along the central axis direction of handle 403, be provided with three and be used to separate connected entrance 303, and on the rotation round direction of handle 403, connect the connection strap 304 of mouthful 303 two sides.

Referring to Fig. 3,4, in the long casing shape inner chamber of powder-storage bin 1, be provided with driving shaft 108 in addition.Driving shaft 108 extends along the casing long side direction of powder-storage bin 1, and the one end passes powder-storage bin 1 and is supported on after with the relative sidewall in end cap 102 positions on the first half gears 109.The first half gears 109 are with the second half gear 404 engagements that are arranged on the handle 403.The axis of the second half gears 404 overlaps with rotating shaft 402 axis of carbon dust puddle support 4.Like this, when the operator rotated by handle 403 control hermatic doors 3, the second half gears 404 just drove the first half gears 109 and rotate, and impel driving shaft 108 to rotate.

In end cap 102 outsides of powder-storage bin 1, be provided with the identical substantially end shield 201 of the horizontal section configuration of powder-storage bin 1.The opening of end cap 102 be exactly end shield 201 by the shape correspondence with the mode combination that plugs each other, again through welding or bonding after sealed.Among Fig. 1, end shield 201 is buckled in form on buckle 110 (see figure 3)s that end cap 102 corresponding positions are provided with by 202 (see figure 9)s of the bayonet socket on it, by snapping or be adhered on the end cap 102, and keep between the two sealing by welding or bonding way in both docking sites of end shield 201 and end cap 102, so far, end shield 201 and end cap 102 common encirclements form waste powder hopper 2, referring to Fig. 1～2,4,6,7,9.

Referring to Fig. 3,7, after end shield 201 was buckled on the end cap 102, the position corresponding to rotating shaft 402 in waste powder hopper 2 was provided with turning axle 204.Turning axle 204 1 end bearings are on the support port 205 (seeing shown in Figure 7) that is provided with on vertical wall of powder-storage bin 1 inner chamber at end cap 102, the other end passes end shield 201 behind vertical wall of powder-storage bin 1 inner chamber, be rotatably supported in end shield 201 on the sidewall 203 (seeing shown in Fig. 1,9) of powder-storage bin 1, and the extending end of this termination passes end shield 201 and is provided with transmission gear 405 with the coaxial structural integrity of turning axle 204 behind the sidewall 203 of powder-storage bin 1 thereon in a fixed manner.The task of transmission gear 405 is to receive the rotary torque that laser printer transmits, to order about turning axle 204 rotations (seeing shown in Fig. 1,3,7).

The other end of above-described driving shaft 108 is supported on end shield 201 on the sidewall 203 of powder-storage bin 1 after passing end cap 102 too.In the position of sidewall 203 supporting driving shafts 108, be provided with useless powder inlet 206.In the present embodiment, useless powder inlet 206 has following shape, and it is the through holes of offering on the cylindrical wall with the formed small column 207 of mode of recessed waste powder hopper 2 inner chambers on the sidewall 203 that circumferentially extend along small column 207.The other end of driving shaft 108 is supported on the sidewall 203, the other end that is specially driving shaft 108 is supported in jointing holes 208 (see figure 9)s that are provided with on the axial end wall of small column 207, and is fixed with guiding piece 209 (see figure 3)s on it extends end outside the jointing holes 208.Guiding piece 209 is shape cylindrical tube corresponding to the cylindrical cavity of small column 207.The tube wall of guiding piece 209 is provided with opening 210.The outer diameter of guiding piece 209 is slightly smaller than the cylindrical cavity of small column 207, and its inner diameter is a bit larger tham the useless powder outlet of the tubular that is arranged on the image-generating unit, that is guiding piece 209 is plugged within the small column 207 in the pipe.So guiding piece 209 can be done the rotation (shown in Fig. 3,7,9) of circumferencial direction in the cylindrical cavity of small column 207.In guiding piece 209 rotation processes, the useless powder inlet 206 with waste powder hopper 2 in whole rotational travel of the opening 210 on it keeps being communicated with.The task of guiding piece 209 is to drive not shown image-generating unit by rotating manner to open or close the useless powder that be arranged at image-generating unit on corresponding with useless powder transportation that produces when work with photosensitive drums and export, making the remaining carbon dust that results from the photosensitive drums be able to from then on useless powder outlet flows out or is intercepted, and then flow in the waste powder hoppers 2 via the useless powder inlet 206 of opening on the guiding piece 209 210 and waste powder hopper 2 successively, perhaps intercepted in the useless powder outlet of image-generating unit and can not be gone out from the imaging unit stream.

Like this, rotate by handle 403 control hermatic doors 3 the operator, the second half gears 404 drive in the first half gear 109 rotating process, driving shaft 108 rotates thereupon, finally order about the guiding piece 209 that is positioned at driving shaft 108 ends and also rotate synchronously, finish the task that the useless powder outlet of tubular of image-generating unit was opened or closed to aforementioned guiding piece 209.

See Fig. 7,8a, 8b, consult Fig. 1～4,9 simultaneously, in waste powder hopper 2, enter the mouth 206 verticals downwards, and on the position corresponding to semicylinder 101 axis, be provided with first spiral pipe 211 and second spiral pipe 212 in useless powder.First spiral pipe 211 and second spiral pipe 212 axially all perpendicular to the natural subsidence direction of the useless powder that in useless powder inlet 206, relies on himself gravity fall, and be parallel to the axial of semicylinder 101.The axis of first spiral pipe 211 overlaps with the axis of second spiral pipe 212.The internal diameter of first spiral pipe 211 is greater than the external diameter of second spiral pipe 212, and first spiral pipe 211 is placed on second spiral pipe, 212 peripheries in other words.The radial center of first spiral pipe 211 and second spiral pipe, 212 axial same ends is individually fixed in the radial center of turning axle 204.The spiral precession direction of first spiral pipe 211 and second spiral pipe 212 is pointed to the direction away from useless powder inlet 206 simultaneously, and in the present embodiment, the spiral precession direction of first spiral pipe 211 and second spiral pipe 212 is pointed to powder-storage bin 1 by waste powder hopper 2 simultaneously.Along the diametric(al) of first spiral pipe 211, the external margin of first spiral pipe 211, promptly its periphery corresponding partly with waste powder hopper 2 along vertical to the diapire inside surface keep in touch.So, transmission gear 405 receive rotary torque that printers transmit with the process of ordering about turning axle 204 rotations in, rotation in the same way takes place with the rotation of turning axle 204 in first spiral pipe 211 and second spiral pipe 212 simultaneously, and then the useless powder that hangs is pushed to the side that waste powder hopper 2 closes on powder-storage bin 1 place from useless powder inlet 206 in the screw propulsion mode, be in the state that does not have useless powder accumulation or few useless powder accumulation is only arranged all the time to keep waste powder hopper 2 to be positioned at the enter the mouth zone of 206 belows of useless powder.Usually, along the sedimentation direction of useless powder in the useless powder inlet 206, promptly the vertical of waste powder hopper 2 to, the integral position of first spiral pipe 211 between useless powder inlet 206 and waste powder hopper 2 along vertical to diapire between; Certainly, the ring that first spiral pipe 211 is adjusted in the position of useless powder inlet 206 also can push away its natural build-up areas to useless powder well with beyond interior and second spiral pipe, 212 rings.

Claims (3)

1. laser printer carbon powder tube, comprise and be used to store carbon dust and it is supplied to the powder-storage bin of developer roll, be used to store up the waste powder hopper and the hermatic door of the remaining carbon dust that produces by photosensitive drums, the described carbon dust wound packages of described powder-storage bin is gone into the diapire that is parallel to developer roll under the state of described laser printer and is provided with along being parallel to the meal outlet that described developer roll central axis direction is extended, the described carbon dust wound packages of described powder-storage bin goes into that the sidewall perpendicular to described developer roll is provided with rotating handle under the state of described laser printer, described hermatic door one end is fixed on the described handle and the opposite end is supported on the end wall of described powder-storage bin position with respect to described handle slidably, described hermatic door is provided with the connected entrance with described meal outlet correspondence, it is characterized in that between described hermatic door is with the described diapire outside surface around the described meal outlet, can keeping the sliding contact state around the mode that described handle axis rotates with described hermatic door, align with described meal outlet at first jiao of described connected entrance in position of described hermatic door, stagger with described meal outlet at second jiao of described connected entrance in position of described hermatic door with respect to described handle axis with respect to described handle axis.

2. laser printer carbon powder tube according to claim 1 is characterized in that being provided with at least one connection strap that is used to separate described connected entrance and upwards connects described connected entrance two side at the revolution of described handle along described handle central axis direction in the described connected entrance.

3. laser printer carbon powder tube according to claim 1 and 2 is characterized in that described hermatic door is with being lined with elastomeric pad between the described diapire outside surface around the described meal outlet.

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