CN200983077Y - Film development box for laser printer - Google Patents

Film development box for laser printer Download PDF

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Publication number
CN200983077Y
CN200983077Y CN 200620154907 CN200620154907U CN200983077Y CN 200983077 Y CN200983077 Y CN 200983077Y CN 200620154907 CN200620154907 CN 200620154907 CN 200620154907 U CN200620154907 U CN 200620154907U CN 200983077 Y CN200983077 Y CN 200983077Y
Authority
CN
China
Prior art keywords
developer roll
laser printer
delevoping cartridge
toner
bar shaped
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN 200620154907
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Chinese (zh)
Inventor
宋显堂
白利民
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Print Rite Technology Development Co Ltd of Zhuhai
Original Assignee
Print Rite Technology Development Co Ltd of Zhuhai
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Print Rite Technology Development Co Ltd of Zhuhai filed Critical Print Rite Technology Development Co Ltd of Zhuhai
Priority to CN 200620154907 priority Critical patent/CN200983077Y/en
Application granted granted Critical
Publication of CN200983077Y publication Critical patent/CN200983077Y/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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Abstract

A developing box of the utility model for laser printer comprises a carbon powder storehouse formed and surrounded by the framework of the developing box and a mixing holder, a developing roller and a thickness adjusting plate for carbon power, all of which is equipped on the framework of the developing box. The two ends of the center shaft of the developing roller are supported in the pivot hole positioned on the framework of the developing box. An airproof element is arranged between the neighborhood area of the two ends of the center shaft of the developing roller and the carbon powder storehouse. The surface of the airproof element is against to and closely touched with the cylinder face hereabout the two ends of the center shaft of the same developing roller and the surface is provided with at least a strip-like vallecular cavity which is retracting to the direction perpendicular to the direction of the center shaft of the developing roller and is mutually parallel allocated along the direction parallel to the direction of the center shaft of the developing roller. The utility model is characterized in the good performance of airproof during the process of supplying the carbon powder to the laser printer.

Description

The laser printer Delevoping cartridge
Technical field
The utility model relates to the laser printer Delevoping cartridge, and this Delevoping cartridge is removably installed on the laser printer, is used for supply toner, and then the electrostatic latent image that photosensitive drums forms is converted to the visual image that is write down by developers such as carbon dusts.
Background technology
Known laser printer Flame Image Process box, mainly by developing cell for example Delevoping cartridge and image-generating unit for example the photosensitive drums box constitute.Developing cell mainly comprises toner, puddle support, developer roll and carbon dust thickness adjusting plate, and these four parts all are arranged on the Delevoping cartridge framework.The printer that wherein has also is provided with the powder feeding roller that is used for the carbon dust that toner is stored is transported to developer roll in developing cell.Image-generating unit mainly comprises photosensitive drums and charging roller, and the two is installed on the photosensitive drums box framework.In developing cell, toner provides the storage space and the suitable carbon dust transfer passage of carbon dust; Puddle support evenly distributes the stand-by carbon dust of transporting to developer roll by the rotation of self; The carbon dust thickness adjusting plate weighs up the powder cutter again, provides carbon dust thickness adjusted function to developer roll; Developer roll is adjacent to photosensitive drums, and the charge effect that current potential there are differences by polarity is identical makes carbon dust be adsorbed in electrostatic latent image zone on the photosensitive drums.Charging roller periphery in the image-generating unit is pressed against the photosensitive drums periphery tightly, and provides charge function to photosensitive drums, makes the photosensitive drums photosensitive region carry identical and the electric charge that current potential there are differences of the charge polarity of polarity and carbon dust absorption.
Under Delevoping cartridge was packed the user mode of laser printer into, photosensitive drum surface was charged equably by charging roller.Laser scanner is launched the laser that contains image information to photosensitive drums, forms corresponding electrostatic latent image at photosensitive drum surface.Carbon dust from developer roll converts the electrostatic latent image on the photosensitive drums to visual image.Along with the rotation of photosensitive drums, replace to transfer roll at the visual image that photosensitive drum surface forms by carbon dust.Through the effect of transfer roll transfer voltage, visual image is transferred on the recording mediums such as paper, with after after warm-up mill and backer roll carry out heating and pressurizing to the visual image on the recording medium, with the visual image full solidification on recording medium.Finish a basic imaging operation like this.
Usually, the developer roll two ends are rotatably supported in respectively on the sidewall of Delevoping cartridge, and it is greater than the length of recording mediums such as paper along self axial length.Therefore, in Delevoping cartridge, the axial both ends of developer roll do not participate in normal carbon dust transmission work, only have towards the position of photosensitive drums photosensitive region and bear this task, and its both ends near zone becomes the work blind area and do not participate in the carbon dust transmittance process.Yet, because the carbon dust layer that developer roll obtains through carbon dust thickness adjusting plate modulation back, will be according to the charge property and the electromotive force height of photosensitive drum surface, adapt with the work sense of rotation of photosensitive drums, follow the work sense of rotation of developer roll to be transferred to the almost whole surface interval and the work blind area of developing comprising of photosensitive drums.Like this, require the whole outer surface of developer roll except its supporting axle head can both realize carrying carbon dust, between developer roll perform region and its supporting axle head, then must keep good sealing state, prevent carbon dust thus binding site leak to the cartridge outside, pollute working environment, perhaps reduce the carbon dust reserves.For example, U.S. Pat 6487383 discloses seal, is used to seal the bonding gap that developer roll supports the existence between axle head and the toner.This seal has the looping snail groove of continuous distribution.Under confined state, these thread grooves are tightly coating near the periphery the developer roll axle head, and the trend by screw thread self freely spreads with carbon dust or the trend of the diffusion component that formed by its deadweight matches, and drives back in the toner entering the interior carbon dust of thread groove.This spiral seal, because thread groove self has certain space, the diffusion component that carbon powder particle forms owing to deadweight still can not be by all counteractings of screw thread trend, thereby have considerable carbon dust all the time and be deposited in the thread groove, if there is slight gap in the seal of developer roll axle head, the leakage of carbon dust just becomes inevitable so.
The utility model content
The purpose of this utility model provides a kind of laser printer Delevoping cartridge, it at the developer roll axle head with the sealing problem between the toner, try hard to overcome the phenomenon that the carbon dust that may occur is deposited on the seal gap on the one hand in seal process, can realize preventing that carbon dust from leaking on the one hand again.
By the Delevoping cartridge on the laser printer of being removably installed in of above-mentioned purpose design, mainly comprise by the Delevoping cartridge framework and surround the toner that forms and be arranged at puddle support, developer roll, carbon dust thickness adjusting plate on the Delevoping cartridge framework.Developer roll is supported on respectively in the pivot hole that is provided with on the Delevoping cartridge framework by the two ends of himself axis.Near developer roll axis two ends and be respectively arranged with seal between the toner.The sealing part has with near the relatively and tight surface of contact, the face of cylinder the developer roll axis two ends, and this surface is provided with at least one to bar shaped vallecular cavity recessed perpendicular to the developer roll central axis direction and that be parallel to each other and distribute along the direction that is parallel to the developer roll axis.
Usually, aforementioned laser printer Delevoping cartridge is provided with the return port that is communicated with toner in its bar shaped vallecular cavity.On the developer roll central axis direction, this return port has at least one bar shaped vallecular cavity with the areal distribution between the developer roll stage casing.
Preferably, aforementioned laser printer Delevoping cartridge, the quantity of its bar shaped vallecular cavity is chosen as 4～10.
According to qualifications, aforementioned laser printer Delevoping cartridge, the projection view of its bar shaped vallecular cavity on the cross section of crossing the developer roll axis is rectangular.
Preferably, aforementioned laser printer Delevoping cartridge, its bar shaped vallecular cavity has complete continuous toroidal.
Outstanding good ground, aforementioned laser printer Delevoping cartridge, its bar shaped vallecular cavity only extend to window inwall that toner is used to separate developer roll along the circumferencial direction of developer roll in toner.
The utility model laser printer Delevoping cartridge is near developer roll axis two ends and be provided with seal between the toner.The sealing part is configured to have a plurality of annulars or the semicircle bar shaped vallecular cavity along developer roll axially spaced-apart independent distribution, and the surface corresponding to the developer roll face of cylinder between the adjacent vallecular cavity closely contacts with the developer roll face of cylinder.The bar shaped vallecular cavity just becomes the throttling groove like this.These throttling grooves cooperatively interact with the fluid behaviour of carbon dust, make carbon dust stream in the bar shaped vallecular cavity, form vortex and carbon powder particle is carried out throttling step by step, make it in the process of external diffusion, progressively lose the energy that it is accumulated in toner along developer roll axis two ends, and then weaken to the degree that is difficult to seepage, reach the purpose of final sealing.So, just avoided carbon dust to leak the printing that causes and polluted, helped improving print quality and reduce environmental pollution.
The drawing explanation
The cut-open view of Fig. 1 the utility model laser printer Delevoping cartridge under installment state.
Fig. 2 is used for the seal skeleton view of the utility model laser printer Delevoping cartridge.
The seal of Fig. 3 the utility model laser printer Delevoping cartridge cooperates synoptic diagram one with developer roll.
The seal of Fig. 4 the utility model laser printer Delevoping cartridge cooperates synoptic diagram two with developer roll.
Embodiment
Referring to Fig. 1, be that the utility model laser printer developing box is assemblied in laser printer 1 schematic sectional structure chart wherein, cutting plane is perpendicular to the axis of developer roll in the Delevoping cartridge among the figure.
According to Fig. 1, the imaging process of laser printer comprises following link.
By the driving of printer 1, make photosensitive drums 2 do the clockwise direction rotation along diagram dotted arrow α, utilize the cylindrical drum face uniform charging of charging roller 3 simultaneously to photosensitive drums 2.Photosensitive drums 2 is rotated in response to the activation bit that transmits in printer in good time, in the laser beam 401 terminal corresponding zones that produce with laser generating mechanism 4, the cylindrical drum face of photosensitive drums 2 is under the irradiation of the laser beam 401 that laser generating mechanism 4 produces, and forms electrostatic latent image at corresponding irradiation area.
In photosensitive drums 2 rotations, driving by printer 1, the cylindrical roll surface of developer roll 5 and the cylindrical drum face of photosensitive drums 2 keep same linear velocity to do rotation counterclockwise along diagram dotted arrow β, be uniformly distributed in the cylindrical roll surface of developer roll 5 after making the adjusting of carbon dust 601 in the toner 6, and from toner 6, taken out of to developing regional through powder delivery cutter 7.
Photosensitive drums 2 is further rotated, and the cylindrical drum face zone that carries electrostatic latent image proceeds to the developing regional that itself and developer roll 5 cylindrical roll surfaces are in contact with one another, that is carries out the zone that carbon dust transmits.Here, the carbon dust layer that developer roll 5 cylindrical roll surfaces are entrained through the adjusting of powder delivery cutter, because of there is potential difference in the electrostatic latent image region of itself and photosensitive drums 2, and be converted to the electrostatic latent image region of photosensitive drums 2 accordingly, electrostatic latent image be developed into be visual carbon dust image.Photosensitive drums 2 is further rotated, and the cylindrical drum face of carbon dust image region proceeds to transfer area.Be developed same mechanism in transfer area according to its electrostatic latent image into visual image, the carbon dust image through the effect of transfer roll 8 be switched to recording medium for example paper 11 last.The remaining carbon dust that is not transferred that remains on the photosensitive drums 2 is come off by scraping by the cleaning doctor 9 as cleaning member, and is recovered to remaining carbon dust reception room, promptly in the waste powder hopper 10.Photosensitive drums 2 through cleaning is carried out above-mentioned imaging process repeatedly with rotation mode, finally forms complete image on recording medium paper 11 surfaces.
After the image transfer printing, carry carbon dust record images medium paper 11, be passed to two fixing rollers 12,13 that are parallel to each other and place by the transport sector that is provided with in the printer, and in the roll gap between two fixing rollers 12,13, pass.In the roll gap between two fixing rollers 12,13, after the high temperature high pressure process of the carbon dust image on the recording medium paper 11 through 12,13 generations of two fixing rollers, be permanently fixed on the recording medium paper 11.Afterwards, have recording medium paper 11 through the carbon dust image of permanent photographic fixing by the transport sector transmission and be expelled to the take-up reel 14 that is arranged in the laser printer outside.
Delevoping cartridge 20 comprises developer roll 5, toner 6, puddle support 15 and powder delivery cutter 7.
Toner 6 is made of several side walls enclose, is used to hold and stores a certain amount of carbon dust 601.The admittance space that the outward appearance length while and the laser printer of toner 6 provides and the axial length of developer roll 5 adapt, and the admittance space that its outward appearance width and height and laser printer provide adapts.Toner 6 is in sealing state being loaded with under the situation of carbon dust.Toner 6 inside are provided with the puddle support 15 of its axially parallel in developer roll 5.Two axle heads of puddle support 15 are supported on respectively on two outermost end sidewalls of toner 6 perpendicular to developer roll 5 axis.Puddle support 15 can be around self axis rotation under external force drives.One of sidewall that is parallel to developer roll 5 that surrounds toner 6 axially offers strip carbon dust outlet 602 along developer roll 5.Carbon dust 601 in the toner 6 can export 602 along carbon dust and flow out to outside the toner 6 under the promotion of puddle support 15.In carbon dust outlet 602, be provided with developer roll 5.Two axle heads of developer roll 5 are rotatably supported in respectively in the pivot hole that is provided with on two outermost end sidewalls of toner 6 perpendicular to developer roll 5 axis.Developer roll 5 can be done rotation counterclockwise along diagram dotted arrow β around self axis under external force drives.Two side clearances that the cylindrical roll surface of developer roll 5 and carbon dust outlet 602 make progress in developer roll 5 footpaths can be respectively by powder delivery cutter 7 and diaphragm seal 16 sealings.
Powder delivery cutter 7 is made of support 701 and elastic spring 702.Support 701 is fixed on one of sidewall of encirclement toner 6 603, and this sidewall 603 is positioned at carbon dust outlet 602 tops along the diagram verticals.Elastic spring 702 1 ends are fixed on the support 701, and its free end stretches out from top to bottom.Under the situation of developer roll 5 location, the free end of elastic spring 702 is because of being subjected to the compressing of developer roll 5 roll surfaces, and contrary is in the sense of rotation β of developer roll 5 bending, and flexibly contact the roll surface of developer roll 5, the gap of carbon dust outlet 602 between developer roll 5 and sidewall 603 sealed, stop carbon dust to leak thus.
Diaphragm seal 16 is fixed on another sidewall 604 that surrounds toner 6, and this sidewall 604 is positioned at carbon dust outlet 602 bottoms along the diagram vertical, is actually the diapire of toner 6.Under the situation of developer roll 5 location, diaphragm seal 16 closely contacts the roll surface of developer roll 5, and the gap of carbon dust outlet 602 between developer roll 5 and sidewall 604 sealed, and stops carbon dust to leak thus.
Participate in Fig. 2,3, and in conjunction with Fig. 1, near developer roll 5 axis two ends and toner 6 be used to support between the sidewall of this two axial ends, be respectively arranged with seal 30.Seal 30 has with near the relatively and tight surfaces 301 of contact, the face of cylinder the developer roll 5 axis two ends 501, and this surface 301 is provided with four to bar shaped vallecular cavity 302 recessed perpendicular to developer roll 5 central axis direction and that be parallel to each other and distribute along the direction that is parallel to developer roll 5 axis.On the cross section through developer roll 5 axis, bar shaped vallecular cavity 302 projection views are rectangular.In bar shaped vallecular cavity 302, be provided with the return port 303 that is communicated with toner 6.On the central axis direction of developer roll 5, return port 303 has two bar shaped vallecular cavities 302 with the areal distribution between the developer roll stage casing.Be Delevoping cartridge 1 under installment state, outside along the axis of developer roll 5, return port 303 is positioned at the vertical of the 3rd bar shaped vallecular cavity 302 to bottom (seeing shown in Figure 4).Bar shaped vallecular cavity 302 extends to the inwall that toner 6 is used to separate the carbon dust outlet 602 of developer roll 5 along the circumferencial direction of developer roll 5 in toner 6 ends.Concrete manifestation is, cylindrical roll surface and carbon dust at developer roll 5 export 602 after two side clearances that developer roll 5 directly makes progress are sealed by powder delivery cutter 7 and diaphragm seal 16 respectively, powder delivery cutter 7 only extends on developer roll 5 central axis direction with the corresponding end-faces of seal 30 on this direction with diaphragm seal 16 and contacts sealing, and near the zone the developer roll 5 axis two ends is occupied by seal 30.Like this, two ends after bar shaped vallecular cavity 302 extends along the circumferencial direction of developer roll 5 in toner 6 just form with sidewall 604 with sidewall 603 respectively and contact sealing.By the bar shaped vallecular cavity 302 of sidewall 603 and sidewall 604 disjunctions thereby have semicircle or be similar to semicircular shape.Certainly, seal can be prepared to complete circle form, and then obtains the bar shaped vallecular cavity of complete continuous toroidal.At this moment, the part of seal remaines in toner 6 inside, and another part then can protrude out to carbon dust outlet 602 zones towards photosensitive drums.
Referring to Fig. 4, during work, puddle support 15 stirs the carbon dust 601 in the toner 6, makes its agglomerating youngster of not luming, and remains on homodisperse state, and it is delivered near the developer roll 5.Developer roll 5 surface adsorption carbon dusts 601 and through behind the powder delivery cutter 7 modulation thickness, developer roll 5 are carrying the carbon dust layer carbon dust exchange area corresponding with photosensitive drums 2 along β direction shown in Figure 1 precession to developer roll 5.Subsequently, the carbon dust layer is replaced to the electrostatic latent image zone of photosensitive drums 2, forms visual carbon dust image area.Along with photosensitive drums 2 along the further precession of α direction shown in Figure 1 to transfer area, visual image is transferred to paper 11 pages, finishes image transitions.In this process, the carbon dust 601 in the toner 6 passes through the upset of puddle supports 15 and has higher energy, can spread the outside to toner 6 along the gap between seal 30 and the developer roll 5, and enter bar shaped vallecular cavity 302.After this throttling barrier effect that process bar shaped vallecular cavity 302 produces, absorption diffuses into the entrained energy of carbon dust 601 in gap between seal 30 and the developer roll 5, and then the carbon dust in this gap 601 is limited in the bar shaped vallecular cavity 302, finally reenter in the toner 6 by return port 303.

Claims (6)

1. laser printer Delevoping cartridge, be removably installed on the laser printer, it comprises toner that is formed by the encirclement of Delevoping cartridge framework and the puddle support that is arranged on the Delevoping cartridge framework, developer roll, the carbon dust thickness adjusting plate, developer roll is supported on respectively in the pivot hole that is provided with on the described Delevoping cartridge framework by himself axis two ends, it is characterized in that, be respectively arranged with seal near the described developer roll axis two ends and between the described toner, described seal has with near the relatively and tight surface of contact, the face of cylinder the described developer roll axis two ends, and described surface is provided with at least one to bar shaped vallecular cavity recessed perpendicular to described developer roll central axis direction and that be parallel to each other and distribute along the direction that is parallel to described developer roll axis.
2. laser printer Delevoping cartridge according to claim 1, it is characterized in that in described bar shaped vallecular cavity, being provided with the return port that is communicated with described toner, between described the above return port of developer roll central axis direction is with described developer roll stage casing, be distributed with at least one described bar shaped vallecular cavity.
3. laser printer Delevoping cartridge according to claim 1 and 2, the quantity that it is characterized in that described bar shaped vallecular cavity is 4～10.
4. laser printer Delevoping cartridge according to claim 3 is characterized in that the projection view of described bar shaped vallecular cavity on the cross section of crossing described developer roll axis is rectangular.
5. laser printer Delevoping cartridge according to claim 4 is characterized in that described bar shaped vallecular cavity has complete continuous toroidal.
6. laser printer Delevoping cartridge according to claim 4 is characterized in that described bar shaped vallecular cavity extends to the window inwall that described toner is used to separate described developer roll along the circumferencial direction of described developer roll and ends in described toner.
CN 200620154907 2006-12-13 2006-12-13 Film development box for laser printer Expired - Fee Related CN200983077Y (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN 200620154907 CN200983077Y (en) 2006-12-13 2006-12-13 Film development box for laser printer

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200620154907 CN200983077Y (en) 2006-12-13 2006-12-13 Film development box for laser printer

Publications (1)

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CN200983077Y true CN200983077Y (en) 2007-11-28

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CN 200620154907 Expired - Fee Related CN200983077Y (en) 2006-12-13 2006-12-13 Film development box for laser printer

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CN (1) CN200983077Y (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011147262A1 (en) * 2010-05-27 2011-12-01 珠海天威飞马打印耗材有限公司 Carbon powder cartridge for laser printer
CN103472697A (en) * 2013-09-12 2013-12-25 珠海天威飞马打印耗材有限公司 Developing roller and developing box

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011147262A1 (en) * 2010-05-27 2011-12-01 珠海天威飞马打印耗材有限公司 Carbon powder cartridge for laser printer
CN103472697A (en) * 2013-09-12 2013-12-25 珠海天威飞马打印耗材有限公司 Developing roller and developing box
CN103472697B (en) * 2013-09-12 2016-05-25 珠海天威飞马打印耗材有限公司 Developer roll and Delevoping cartridge

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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

Granted publication date: 20071128

Termination date: 20141213

EXPY Termination of patent right or utility model