CN201210226Y - Carbon powder cylinder for laser printer - Google Patents
Carbon powder cylinder for laser printer Download PDFInfo
- Publication number
- CN201210226Y CN201210226Y CNU2008200487050U CN200820048705U CN201210226Y CN 201210226 Y CN201210226 Y CN 201210226Y CN U2008200487050 U CNU2008200487050 U CN U2008200487050U CN 200820048705 U CN200820048705 U CN 200820048705U CN 201210226 Y CN201210226 Y CN 201210226Y
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Abstract
The utility model relates to a carbon powder cylinder that is used for a laser printer, which comprises a powder storage cabin and a waste powder cabin. A waste powder inlet that communicates the waste powder cabin and the external environment is arranged on the waste powder cabin. When the carbon powder cylinder is installed in the printer, the inner round tube wall, which is arranged below the plumb direction, of a powder guiding element that is arranged inside the waste powder inlet is provided with a tube groove that extends in the axis direction of the powder guiding element. The bottom wall of the tube groove corresponding to the plumb direction is provided with a first elastic block. A sealing plate that is arranged inside the waste powder inlet is provided with a projection that is inserted into the tube groove. The projection is provided with a groove with the projection shape in the axis direction of the powder guiding element and corresponding to the first elastic block, and that passes through the projection in the axis direction of the powder guiding element. The carbon powder cylinder can effectively prevent the carbon powder that is remained in the waste powder inlet from falling into the laser printer.
Description
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 tubular 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.Above-mentioned developer box, also claim the carbon dust tube, 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, rotates the handle of carbon dust tube then, opens carbon dust tube powder supply port and supplies powder to developing cell, simultaneously by gear drive, make the guide member in the useless powder inlet of carbon dust tube or lead powder spare and rotate 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, process dock with the useless powder outlet of image-forming assembly after the cooperation, and meeting forms the residual so that accumulation of carbon dust in its useless powder porch usually.When the useless powder outlet of imaging assembly after the useless powder inlet of carbon dust tube is extracted out, the residual carbon dust of this part will be wandering to the outside from the useless powder porch of carbon dust tube, causes the printer environmental pollution.
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 stopped the wandering carbon dust tube outside of arriving of residual carbon dust of its useless powder porch effectively.
According to above-mentioned purpose of design, the laser printer carbon powder tube that the utility model proposes comprises and can store carbon dust and it is supplied to the handle of carbon dust turnover state in the powder-storage bin of developer roll, the waste powder hopper that can store up the remaining carbon dust that is produced by photosensitive drums and the may command powder-storage bin.On the end wall of handle, be provided with the cylindrical recessed pipe that stretches into waste powder hopper at waste powder hopper.On the cylindrical wall of this cylindrical recessed pipe, be provided with the useless powder inlet of the external environment condition that is communicated with waste powder hopper and waste powder hopper.In the tube chamber of cylindrical recessed pipe, be provided with the round tubular guidewire powder spare that can rotate around the axis of cylindrical recessed pipe.Leading on the pipe wall of powder spare, be provided with transitional pore corresponding to useless powder inlet.In leading the tube chamber of powder spare, be provided with along the central axis direction seal pad sliding back and forth of leading powder spare.Seal pad is with keeping sliding contact between the interior pipe wall of leading powder spare.One end of coil spring is fixed on the seal pad, its other end be fixed in lead powder spare along self central axis direction on first end wall of waste powder hopper.Under the carbon dust tube is installed on state in the laser printer, be positioned on the vertical pipe wall downwards leading powder spare, be provided with along leading the tube seat that powder spare central axis direction is extended.Tube seat corresponding to vertical to diapire on, be provided with first elastomer block.Be provided with the projection that inserts in the tube seat at seal pad.On projection, be provided with and leading projection of shape on the powder spare central axis direction, and connect the groove of projection self along leading powder spare central axis direction corresponding to first elastomer block.
Usually, aforementioned first elastomer block is positioned at tube seat along leading on the external port of powder spare central axis direction.
According to qualifications, aforementioned laser printer carbon dust tube, in its tube seat near lead powder spare first end wall near the connected entrance that is communicated with waste powder hopper and leads powder spare tube chamber is set.
Preferably, aforementioned laser printer carbon dust tube also comprises second elastomer block.Second elastomer block is fixed in seal pad and faces on the sidewall of waste powder hopper along leading powder spare central axis direction.The shape of second elastomer block is corresponding to seal pad.Keep interference to contact between second elastomer block and the interior pipe wall of leading powder spare.
Above-mentioned first elastomer block and second elastomer block generally all adopt the porous fibrous material preparation of sponge and so on.
The utility model laser printer carbon powder tube adopts following make, promptly under the carbon dust tube is installed on state in the laser printer, is positioned on the vertical pipe wall downwards leading powder spare, is provided with along leading the tube seat that powder spare central axis direction is extended; Tube seat corresponding to vertical to diapire on, be provided with first elastomer block; Be provided with the projection that inserts in the tube seat at seal pad; On projection, be provided with and leading projection of shape on the powder spare central axis direction, and connect the groove of projection self along leading powder spare central axis direction corresponding to first elastomer block.So, when seal pad reciprocatingly slides with the form of sliding contact in leading powder spare tube chamber, lead carbon dust in the powder spare tube chamber and will be blocked in by first elastomer block and lead in the powder spare tube chamber, and then it is wandering to carbon dust tube outside to stop the residual carbon dust of its useless powder porch.On this basis, further in tube seat near lead powder spare first end wall near the connected entrance that is communicated with waste powder hopper and leads powder spare tube chamber is set, and on seal pad fixing with lead powder spare in after the maintenance interference contacts between the pipe wall second elastomer block, aforementioned residual carbon dust will be back to the waste powder hopper from connected entrance, simultaneously, second elastomer block will and be led because interference contact and at seal pad and form damping phenomena in the powder spare between the pipe wall, coil spring is discharged lentamente to the impulse force that seal pad produces, prevent that thus seal pad from ejecting the residual carbon dust loss that causes rapidly from leading in the powder spare tube chamber.
The drawing explanation
Fig. 1 the utility model laser printer carbon powder tube skeleton view.
Fig. 2 the utility model laser printer carbon powder tube partial sectional view.
The waste powder hopper partial sectional view of Fig. 3 the utility model laser printer carbon powder tube.
Fig. 4 the utility model laser printer carbon powder tube lead powder spare and seal pad decomposition diagram one.
Fig. 5 the utility model laser printer carbon powder tube lead powder spare and seal pad decomposition diagram two.
Fig. 6 a the utility model laser printer carbon powder tube lead powder spare partial sectional view one.
Fig. 6 b the utility model laser printer carbon powder tube lead powder spare partial sectional view two.
Embodiment
Referring to Fig. 1～6, the configuration state of the utility model laser printer carbon powder tube and related components thereof or feature is shown.The task of bearing according to each building block is investigated the constitution state of carbon dust tube A, and it mainly is made up of following member: be used to hold and lay in a certain amount of carbon dust and carbon dust is transported to the developing apparatus of laser printer powder-storage bin 1, be used to collect and hold the waste powder hopper 2 of the remaining carbon dust that the photosensitive drums by laser printer produces.
Referring to Fig. 1, powder-storage bin 1 is the empty tube of the column of inner hollow.Be installed under the state of (not shown) in the laser printer at carbon dust tube A, the Lower Half xsect of powder-storage bin 1 is circular arc, and the inner chamber of its hollow is used to store carbon dust.On the post jamb of powder-storage bin 1 Lower Half, be provided with the meal outlet 101 that connects post jamb.Under carbon dust tube A was installed on state in the laser printer, the carbon dust of powder-storage bin 1 inner reserve was supplied in the developing apparatus of laser printer via meal outlet 101.Under idle state, meal outlet 101 is generally closed by powder door 102.Powder door 102 is coated on the outside post jamb of powder-storage bin 1, and it is controlled by the handle 103 that is arranged on the powder-storage bin 1 vertical end outer wall the on off state of meal outlet 101.Control relation between handle 103 and the powder door 102 is end to be plugged in the receiving slit (not shown) that is provided with on handle 103 and to realize longitudinally by powder door 102.Usually, in the inner chamber of powder-storage bin 1, also be provided with the puddle support (not shown) that is used to stir carbon dust.This puddle support rotates with the transmission gear 104 driving generations on the identical outer wall in handle 103 places by being arranged on powder-storage bin 1 a vertical end.Driven wheel 104 rotating moment are then from laser printer.
Referring to Fig. 2,3, waste powder hopper 2 also is the empty tube of the column of inner hollow, and its xsect is square substantially, and it is arranged on powder-storage bin 1 vertical other end, and its position is relative with handle 103.Powder-storage bin 1 and waste powder hopper 2 between the two by intermediate membrane 3 disjunctions to keep state of isolation between the two.Waste powder hopper 2 back to and end wall away from handle 103 on, be provided with and extend into the recessed pipe 201 of waste powder hopper 2 inner cylindrical.On the cylindrical wall of cylindrical recessed pipe 201, be provided with the useless powder inlet 202 of the external environment condition that is communicated with waste powder hopper 2 and waste powder hopper 2.The axial end wall 205 of cylindrical recessed pipe 201 is parts of the bulkhead of waste powder hopper 2, and it is kept apart cylindrical recessed pipe 201 and waste powder hopper 2 mutually.In the present embodiment, cylindrical recessed pipe 201 axially and vertically being consistent of powder-storage bin 1.The remaining carbon dust that the photosensitive drums of laser printer produces flows into waste powder hopper 2 inner preservations via useless powder inlet 202.In waste powder hopper 2 inside, the spiral fashion that is provided with the carbon dust that is used to put together is led powder frame 203.Lead powder frame 203 and produce rotation by the driving moment that the puddle support in aforementioned powder-storage bin 1 inner chamber transmits, the remaining carbon dust that photosensitive drums produces the carbon dust that flows into waste powder hopper 2 inside is guided to useless powder inlet 202 position far away in addition, so that can enter waste powder hopper 2 inside smoothly.
Referring to Fig. 2,3,4,5, in the tube chamber of cylindrical recessed pipe 201, be provided with round tubular guidewire powder spare 204.Circle tubular guidewire powder spare 204 can rotate around the axis of cylindrical recessed pipe 201.The driving force that circle tubular guidewire powder spare 204 rotates around cylindrical recessed pipe 201 axis produces by aforementioned handle 103.This driving force that is produced by handle 103 is passed to by aforementioned powder door 102 on the transmission shaft 206 that penetrates waste powder hopper 2 and connect powder door 102, is finally put on the round tubular guidewire powder spare 204 by transmission shaft 206.Leading on the pipe wall of powder spare 204, be provided with the transitional pore 207 of perforation.When circle tubular guidewire powder spare 204 when the axis of cylindrical recessed pipe 201 turns to suitable angle, transitional pore 207 is docked and connected with useless powder inlet 202, the remaining carbon dust that the photosensitive drums of laser printer produces flows to useless powder inlet 202 from transitional pore 207.
Referring to Fig. 4,5, in the tube chamber of leading powder spare 204, be provided with seal pad 208.The shape of cross section of seal pad 208 is corresponding to the tube chamber of leading powder spare 204, and it can reciprocatingly slide along the central axis direction of leading powder spare 204.The central axis direction of leading powder spare 204 with cylindrical recessed pipe 201 axially and vertically being consistent of powder-storage bin 1.The horizontal outer peripheral edges of seal pad 208 are with keeping the sliding contact state between the interior pipe wall of leading powder spare 204.Coil spring 216 longitudinally an end against or be fixed on the seal pad 208, the other end be fixed in lead powder spare 204 along self central axis direction on first end wall 209 of waste powder hopper 2.Coil spring 216 and lead fixed form between first end wall 209 of powder spare 204 can be the snapping piece 210 that column is set on first end wall 209, with coil spring 216 sleeves on snapping piece 210.
Referring to Fig. 5,6a, b, under carbon dust tube A is installed in state in the laser printer, be positioned on the vertical pipe wall downwards in leading powder spare 204, be provided with tube seat 211.Tube seat 211 extends to first end wall 209 along the central axis direction of leading powder spare 204.Tube seat 211 corresponding to vertical to diapire 212 on, be provided with first elastomer block 213.First elastomer block more than 213 adopts the porous fibrous material preparation of sponge and so on.Along the central axis direction of leading powder spare 204, first elastomer block 213 is positioned on the external port of tube seat 211.Seal pad 208 is provided with can the corresponding projection 214 that inserts in the tube seat 211.On projection 214, be provided with groove 215.Groove 215 is being led projection of shape on powder spare 204 central axis direction corresponding to first elastomer block 213.And along the central axis direction of leading powder spare 204, groove 215 connects projection 214.Tube seat 211 near first end wall 209 of leading powder spare 204 near, be provided with the connected entrance 217 that is communicated with waste powder hopper 2 and leads the tube chamber of powder spare 204.Along leading powder spare 204 central axis direction, face in seal pad 208 on the sidewall 218 of waste powder hopper 2, be fixed with second elastomer block 219 by the bonding mode of chemical adhesive.Second elastomer block 219 also adopts the porous fibrous material preparation of sponge and so on, and its shape of cross section is corresponding with seal pad 208.The lateral dimension of second elastomer block 219 is a bit larger tham seal pad 208.Like this, when seal pad 208 when the central axis direction of leading powder spare 204 reciprocatingly slides, second elastomer block 219 will with the interior pipe wall of leading powder spare 204 between form closely that interference contacts, and then to the reciprocatingly slide formation damping effect of seal pad 208 in leading the interior pipe of powder spare 204, the elasticity impulse force that 216 pairs of seal pads of coil spring 208 are produced can access slow release, and then make to be deposited in and lead that the carbon dust in the pipes has the sufficient time to flow in the tube seat 211 of leading powder spare 204 in the powder spare 204, flow in the waste powder hoppers 2 via connected entrance 217.
Claims (4)
1. laser printer carbon powder tube, comprise and to store carbon dust and it is supplied to the powder-storage bin of developer roll, can store up the handle of carbon dust turnover state in the waste powder hopper of the remaining carbon dust that produces by photosensitive drums and the described powder-storage bin of may command, described waste powder hopper is provided with the cylindrical recessed pipe that stretches into described waste powder hopper back to the end wall of described handle, the cylindrical wall of described cylindrical recessed pipe is provided with the useless powder inlet that is communicated with described waste powder hopper and external environment condition, be provided with the round tubular guidewire powder spare that can rotate in the tube chamber of described cylindrical recessed pipe around the axis of described cylindrical recessed pipe, described pipe wall of leading powder spare is provided with the transitional pore corresponding to described useless powder inlet, be provided with the central axis direction seal pad sliding back and forth of leading powder spare in the described tube chamber of leading powder spare along described, described seal pad is with keeping sliding contact between the described interior pipe wall of leading powder spare, one end of coil spring be fixed on the described seal pad and its other end be fixed in described lead powder spare along self central axis direction on first end wall of described waste powder hopper, it is characterized in that, under described carbon dust tube is installed on state in the described laser printer, the described powder spare of leading is positioned at vertical pipe wall downwards and is provided with along described and leads the tube seat that powder spare central axis direction is extended, described tube seat corresponding to vertical to diapire be provided with first elastomer block, described seal pad is provided with the projection that inserts in the described tube seat, and described projection is provided with in the described projection of shape of leading on the powder spare central axis direction and connects the groove of self corresponding to described first elastomer block and along the described powder spare central axis direction of leading.
2. according to the described laser printer carbon powder tube of claim 1, it is characterized in that described first elastomer block is positioned at described tube seat along the described external port of leading powder spare central axis direction.
3. according to the described laser printer carbon powder tube of claim 1, it is characterized in that, described tube seat described lead to be provided with near powder spare first end wall be communicated with described waste powder hopper and described connected entrance of leading powder spare tube chamber.
4. according to the described laser printer carbon powder tube of claim 1, it is characterized in that also comprising second elastomer block, described second elastomer block is fixed in described seal pad and faces on the sidewall of described waste powder hopper along the described powder spare central axis direction of leading, the shape of described second elastomer block is corresponding to described seal pad, keeps interference to contact between described second elastomer block and the described interior pipe wall of leading powder spare.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200487050U CN201210226Y (en) | 2008-05-30 | 2008-05-30 | Carbon powder cylinder for laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008200487050U CN201210226Y (en) | 2008-05-30 | 2008-05-30 | Carbon powder cylinder for laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201210226Y true CN201210226Y (en) | 2009-03-18 |
Family
ID=40480965
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008200487050U Expired - Fee Related CN201210226Y (en) | 2008-05-30 | 2008-05-30 | Carbon powder cylinder for laser printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201210226Y (en) |
-
2008
- 2008-05-30 CN CNU2008200487050U patent/CN201210226Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20090318 Termination date: 20170530 |