CN200983078Y - Film development device for laser printer - Google Patents
Film development device for laser printer Download PDFInfo
- Publication number
- CN200983078Y CN200983078Y CN 200620154908 CN200620154908U CN200983078Y CN 200983078 Y CN200983078 Y CN 200983078Y CN 200620154908 CN200620154908 CN 200620154908 CN 200620154908 U CN200620154908 U CN 200620154908U CN 200983078 Y CN200983078 Y CN 200983078Y
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- Prior art keywords
- gear
- groove
- laser printer
- developer roll
- driving lever
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- Electrophotography Configuration And Component (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The utility model relates to a developing device used for a laser printer comprising a power storehouse, a developing house and a trigger mechanism comprising a rotating detecting gear,a spring and a trigger deflector rod. The wheel axle of the detecting gear is provided with a coaxial loop with a gap whose diameter is more than the peripheral gear, a stress bearing mouth that fixedly engages with the spring and two adjacent grooves that are a first groove and a second groove are provided with the trigger deflector rod whose one end is supported in the through-whole of a hood in a slideable way, the coaxial ring enters the second groove from the first groove in a nonreversible way. The developing devise can avoid the damage caused by the impact of contact or the locking phenomenon during controlling recording the autologous employment course, thereby guaranteeing the normal operation of the laser printer.
Description
Technical field
The utility model relates to for example developing apparatus of laser printer of electrophotographic image forming, particularly has the developing apparatus that is used to transmit the powder feeding roller of carbon dust and electrostatic latent image is converted to visual image.
Background technology
Electrophotographic image forming, for example laser printer is the photosensitive drums that has predetermined potential by the laser scanning irradiation, forms electrostatic latent image on its surface.This electrostatic latent image is developed with predetermined carbon dust, and then will be transferred on the paper, the image fixing of transfer printing acquisition, become the visual image that naked eyes can be observed afterwards,---signal---conversion between the image that realizes image thus through the image that develops.
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 various purposes of design and technical thought, 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 processing unit, laser scanning mechanism and fixing roller directly are installed in the printer respectively, developer roll and transfer roll etc. are integrated into an independently developing cell, or claim developing apparatus.After processing 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.
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 at its cylindrical surface by laser scanning mechanism emitted laser bundle.
Store developer for example toner or carbon dust within it in the container that developing apparatus is established, and utilize powder feeding roller and developer roll carbon dust to be sent to the photosensitive drums that has electrostatic latent image.
The electrostatic latent image that forms on the photosensitive drums is transferred on the paper between photosensitive drums and the transfer roll by transfer roll, utilizes fixing roller that the carbon dust image on the paper is given photographic fixing at last.
Above-mentioned developing apparatus, utilize the powder storehouse to bear the storage task of carbon dust on the one hand, on the other hand, powder feeding roller and developer roll are arranged at the developing apparatus inboard simultaneously, realize that by powder feeding roller and developer roll carbon dust is transferred into developer roll and is passed to photosensitive drums from developer roll from the powder storehouse, finish the conversion between photosensitive drums electrostatic latent image and the visual image.Developing apparatus comprises the powder storehouse that is surrounded by some sidewalls on the whole.The powder storehouse is divided into to be used to store the powder-storage bin of specified developer and to be used to lay in certain carbon dust by internal partition also finishes the developing chamber that carbon dust is adsorbed in the developer roll surface therein.Powder feeding roller and developer roll are set in the developing chamber with the attitude that is parallel to each other, and its axle head is rotatably supported in respectively on the developing chamber sidewall.Wherein a part of roll surface of developer roll is exposed to outside the developing chamber sidewall window.Developing apparatus separates accumulating with the graphics processing unit at photosensitive drums place, fit assembling during installation.After the assembling of developing apparatus and graphics processing unit finishes, be exposed to the corresponding exposed bulging face adjacency of the outer development roll surface of developing chamber sidewall window with photosensitive drums on the graphics processing unit, 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.
Above-mentioned developing apparatus, its developing chamber sidewall outside surface that is used to support powder feeding roller and developer roll axle head is provided with one group of gear set that is used to transmit rotary torque.This gear set is equipped with a testing agency, is used to discern aforementioned developing apparatus and whether lives through user mode.For example, CN200410058936.6 number domestic application for a patent for invention discloses a kind of Delevoping cartridge that is installed in movably in the laser printer.It comprises that a driven wheel to Delevoping cartridge input driving force, one irreversibly do not move to detection of gear and a contact member that is formed on the detection of gear of the used position that detection of gear do not mesh with driven wheel with the original position of the driven wheel engagement driving force transmission location by detection of gear and driven wheel engagement from detection of gear.Actuator is arranged on the main frame of laser printer, and when Delevoping cartridge was installed in the main frame of laser printer, because the contact activated device of contact member, this actuator moved to the driving force transmission location with detection of gear from original position.This testing agency drives frizzen by the one-directional rotation of partial gear in predetermined angular range and is rocked to the release lock controlled position synchronously, impel printer to remove the lockup state of the respective springs form contact chip that is provided with on it, the control circuit of spring contact plate and central processing unit (CPU) is connected, entered the state of record developing apparatus work course.In this process, the rotating speed of partial gear has determined the movement velocity of frizzen, causes the corresponding speed of frizzen slow partially.In addition, partial gear formed initial engagement together with respective gears and impacts in the moment that enters mesh regional from free state, be difficult to realize steady contact, the damage that impacts, even form the state of the mutual locking of wheel between cog, so that can not remove the lockup state of printer spring contact plate.
The utility model content
The utility model purpose is to provide a kind of developing apparatus of laser printer, this developing apparatus can nimblely be removed the lockup state of the respective springs form contact chip that is provided with on the printer quickly behind the printer of packing into, the gear set that can avoid self being used for driving torque simultaneously enters the locking state.
Laser printer developing apparatus according to the above-mentioned purpose design comprises the powder-storage bin and the developing chamber that are surrounded by some sidewalls.Be provided with its axially parallel each other developer roll and powder feeding roller in the developing chamber.Two axle heads of developer roll and powder feeding roller all are rotatably supported in respectively with developer roll and axially keep on the sidewall of developing chamber of plumbness.One of the developing chamber sidewall of two axle heads of supporting developer roll and powder feeding roller outside surface is provided with one group of guard shield that is used to transmit the gear set of rotary torque and is used to hide this gear set.This developing apparatus also comprises trigger mechanism.Trigger mechanism is made up of rotatable detection of gear, spring and triggering driving lever.Its medi-spring is fixed between the inside surface of aforementioned developing chamber sidewall outside surface that is provided with gear set and guard shield.Detection of gear is rotatably supported in aforementioned and is provided with on the solid bearing that is provided with on the developing chamber sidewall outside surface of gear set, and keeps engagement with one in the gear set on its basis that axially is parallel to each other.The wheel shaft of detection of gear is provided with the coaxial annulus of diameter greater than its gear teeth periphery.The external peripheral surface of coaxial annulus is provided with at least one section along the breach that self axially connects along self circumferencial direction.Triggering driving lever is provided with fixing stressed mouthful of contacting in the force side of spring.Triggering driving lever one end is supported in the through hole that is provided with on guard shield slidably.Trigger driving lever and axially be provided with two first grooves that adjoin and second groove along developer roll.Breach on the aforementioned coaxial annulus along the width of coaxial annulus circumferencial direction greater than triggering driving lever between first groove with state the length in the same way of the part between second groove.After detection of gear entered rotation status, coaxial annulus entered second groove in mode irreversibly from first groove.
Optimally, aforementioned laser printer developing apparatus, its detection of gear is along the continuous equally distributed complete gear wheel of self its gear teeth of circumferencial direction.
According to qualifications, aforementioned laser printer developing apparatus, its triggering driving lever one end that is supported in the guard shield through hole extends axially out outside the guard shield through hole along developer roll.
Preferably, aforementioned laser printer developing apparatus, its spring are the coil springs that is in compressive state, and this spring is fixed in guard shield perpendicular on the axial inwall of developer roll with self relative end in force side.
Optionally, aforementioned laser printer developing apparatus, its spring are the coil springs that is in extended state, and this spring is fixed on the aforementioned developing chamber sidewall outside surface that is provided with gear set with self relative end in force side.
Laser printer developing apparatus of the present utility model adopts along the continuous equally distributed complete gear wheel of self its gear teeth of circumferencial direction as detection of gear.Keep engagement to obtain rotatablely moving of detection of gear by detection of gear with of the gear set that is used for transmitting driving torque, and then the synchronous rotation by being arranged at notched coaxial annulus on the detection of gear wheel shaft and the cooperation of breach, coaxial annulus in first groove that is being provided with on triggering driving lever that slidably mates is transferred in second groove that is arranged on the triggering driving lever, and the cooperation of the elastic force that the process spring produces is converted into the triggering driving lever to the displacement of coaxial annulus between first groove to the second groove and moves along the axial linearity of developer roll, impel triggering driving lever one end that is supported in the guard shield through hole to enter state within the withdrawal guard shield from the state outside the guard shield of stretching out in, and then facilitate printer to remove the lockup state of the respective springs form contact chip that is provided with on it, printer spring contact plate and corresponding control circuit are connected, entered duty.This lock control mode, the integrality of detection of gear can avoid occurring possible mesh impact between itself and the meshing gear, guarantee to trigger the driving lever smooth starting, can also obtain detection of gear with the stable contact between the meshing gear simultaneously, avoid taking place its gear teeth stuck phenomenon mutually.
The drawing explanation
Fig. 1 the utility model laser printer developing apparatus skeleton view.
Fig. 2 the utility model laser printer developing device structure decomposing schematic representation.
Fig. 3 the utility model laser printer developing apparatus guard shield position skeleton view one.
Fig. 4 the utility model laser printer developing apparatus guard shield position skeleton view two.
Fig. 5 the utility model laser printer developing apparatus guard shield position skeleton view three.
Fig. 6 the utility model laser printer developing apparatus partial structurtes synoptic diagram one.
Fig. 7 the utility model laser printer developing apparatus partial structurtes synoptic diagram two.
Fig. 8 the utility model laser printer developing apparatus partial structurtes synoptic diagram three.
Fig. 9 a the utility model laser printer developing apparatus partial structurtes synoptic diagram four.
Fig. 9 b the utility model laser printer developing apparatus partial structurtes synoptic diagram five.
Embodiment
Referring to Fig. 1～9b, show the utility model laser printer developing device structure.
See Fig. 1,2, mainly comprise the powder storehouse (not shown) that surrounds by some sidewalls on this developing apparatus A structure.The powder storehouse by internal partition be divided into be used to store specified developer for example carbon dust the powder-storage bin (not shown) and be used to lay in certain carbon dust and finish the developing chamber (not shown) that carbon dust is adsorbed in the developer roll surface therein.Powder feeding roller and developer roll are set in the developing chamber with the attitude that is parallel to each other, and their two axle heads are rotatably supported in respectively with developer roll and axially keep on the developing chamber sidewall of plumbness.Wherein a part of roll surface of developer roll is exposed to (not shown exposed part) outside the developing chamber sidewall window.Developing apparatus separates accumulating with the graphics processing unit at photosensitive drums place, fit assembling during installation.After the assembling of developing apparatus and graphics processing unit finishes, be exposed to the corresponding exposed bulging face adjacency of the outer development roll surface of developing chamber sidewall window with photosensitive drums on the graphics processing unit, 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.
On the developing chamber sidewall 101 of supporting powder feeding roller and the same direction axle head of developer roll, be provided with the guard shield 103 that is used for that the rotary torque that laser printer produces passed to the gear set 102 of tumblers such as developer roll, powder feeding roller and is used to hide gear set 102.Guard shield 103 can connected mode such as be buckled by bolt, tenon and be fixed on the developing chamber sidewall 101, and then gear set 102 is enclosed in the inner chamber that is surrounded by guard shield 103 and developing chamber sidewall 101, avoid gear set 102 to expose, perhaps be subjected to the influence of flying dust with the influence sight.Self keep the sliding contact state with the respective gears axial end in the gear set 102 by guard shield 103 simultaneously towards the surface of developing chamber sidewall 101, provide axial location to gear set 102, and then avoid the member in the gear set 102 to come off so that cause and print obstacle etc. from corresponding bearing.Under operating conditions, the rotary torque that printer produces is delivered to tumblers such as developer roll, powder feeding roller in the mode of unidirectional rotation all the time, makes that so a kind of duty all can only appear in each corresponding gear in the gear set 102, i.e. the rotation of single direction.That is only there is a kind of duty in the tumbler such as developer roll, powder feeding roller that is arranged in the powder storehouse---unidirectional rotation.Schematically show the sense of rotation α of tumblers such as developer roll, powder feeding roller among Fig. 2.
In the inner chamber that guard shield 103 and developing chamber sidewall 101 surround, be provided with a detection of gear 104 in addition, see Fig. 2,3,4,5,6,7,8.Detection of gear 104 is rotatably supported on the solid bearing that is provided with on developing chamber sidewall 101 outside surfaces, it is distributed with some gear teeth continuously equably along self circumferencial direction, and keeps intermeshing state with a transition gear 106 in the gear set 102 on its basis that axially is parallel to each other.Rotatablely moving of gear set 102 can successfully be passed to detection of gear 104 like this.On the wheel shaft of detection of gear 104, adjoin the gear teeth axial end edge of detection of gear 104, be provided with coaxial annulus 105.The diameter of coaxial annulus 105 is greater than the gear teeth periphery of detection of gear 104.Himself circumferencial direction is provided with one section along the breach 107 that self axially connects in the external peripheral surface upper edge of coaxial annulus 105.
In the inner chamber that above-mentioned guard shield 103 and developing chamber sidewall 101 surround, also be provided with coil spring 108 and trigger driving lever 109, referring to Fig. 2,3,4,5,6,7,8,9a, 9b.
Wherein, under confined state, coil spring 108 integral body are in compressive state, its end is fixed in guard shield 103 on a part of surface of developing chamber sidewall 101, with triggering the stressed mouthful 110 fixing contact that is provided with on the driving lever 109, the Conversion of energy that compressive state is accumulated is elastic force and passes to by stressed mouthful 110 and to trigger driving lever 109 other end as the force side.
Trigger driving lever 109 and approximately be clava.An end that triggers driving lever 109 slidably is supported in the through hole 112 that is provided with on guard shield 103.Under confined state, the length direction that triggers driving lever 109 is parallel to the axial of developer roll, and an aforementioned end 115 that is supported on the triggering driving lever 109 in the guard shield through hole 112 extends axially out outside the guard shield through hole 112 along developer roll.Be provided with a step 111 near the length direction middle part of triggering driving lever 109.Step 111 in the face of the sidewall of guard shield 103 is rendered as an extended plane on perpendicular to the direction that triggers driving lever 109 length, just is provided with aforementioned stressed mouthful 110 along the length direction that triggers driving levers 109 on this plane.In the present embodiment, stressed mouthful 110 shows as flat shape.The force side of coil spring 108 just is supported on the stressed mouth 110 of this flat shape.Certainly, if consider location needs to coil spring 108, prevent that it from producing offset on perpendicular to the direction that triggers driving lever 109 length, can also on step 111, be provided with and to insert the positioning cylinder in the ring in the coil spring 108, the positioning round orifice that inserts wherein for coil spring 108 also can be set on step 111.Near triggering the length direction middle part of driving lever 109, be provided with two first grooves 113 that adjoin and second groove 114.Coaxial annulus breach 107 along the width of coaxial annulus 105 circumferencial directions greater than the length in the same way that triggers the part of driving lever 109 between first groove 113 and second groove 114.The bearing of trend of first groove 113 and second groove 114 is perpendicular to the length direction that triggers driving lever 109, and before Delevoping cartridge A was loaded into laser printer, one section of coaxial annulus 105 outer shrouds was embedded in first groove 113.After Delevoping cartridge A is loaded into laser printer, the rotary torque that starts Delevoping cartridge A running is passed to detection of gear 104 by the transition gear in the gear set 102 106 and impels it to produce rotation, drive coaxial annulus 105 simultaneously and do rotation synchronously, when coaxial annulus breach 107 marches to first groove, 113 positions, and it is punctual with 107 pairs of coaxial annulus breach to trigger the part of driving lever 109 between first groove 113 and second groove 114, trigger driving lever 109 under the promotion of coil spring 108 to the advance front end of powder-storage bin direction retracting motion to the opening aligned coaxial annulus 105 of second groove 114, the front end of advancing of coaxial immediately annulus 105 penetrates second groove 114, continues with original rotation mode motion.The retracting motion that triggers driving lever 109 drives the termination retraction that is supported in the through hole 112, removes this termination to printing the lock control state of machine testing switch, makes the central processing unit of printer enter the counting duty, the work course of record developing apparatus A.
Claims (5)
1. laser printer developing apparatus, comprise the powder-storage bin and the developing chamber that surround by some sidewalls, be provided with its axially parallel each other developer roll and powder feeding roller in the described developing chamber, two axle heads of described developer roll and described powder feeding roller all are rotatably supported in respectively with described developer roll and axially keep on the sidewall of described developing chamber of plumbness, one of the described developing chamber sidewall outside surface that supports two axle heads of described developer roll and described powder feeding roller is provided with one group of guard shield that is used to transmit the gear set of rotary torque and is used to hide described gear set, it is characterized in that also comprising trigger mechanism, described trigger mechanism comprises rotatable detection of gear, spring and triggering driving lever, described spring is fixed between the inside surface of described outside surface and described guard shield, described detection of gear is rotatably supported on the solid bearing that is provided with on described outside surface and with one in the described gear set and keeps engagement on its basis that axially is parallel to each other, the wheel shaft of described detection of gear is provided with the coaxial annulus of diameter greater than the gear teeth periphery of described detection of gear, the external peripheral surface of described coaxial annulus is provided with at least one section along the breach that self axially connects along self circumferencial direction, described triggering driving lever is provided with stressed mouthful with the fixing contact in force side of described spring, described triggering driving lever one end is supported in the through hole that is provided with on described guard shield slidably, described triggering driving lever axially is provided with two first grooves that adjoin and second groove along described developer roll, described breach is along the width of the described coaxial annulus circumferencial direction length in the same way greater than the part of described triggering driving lever between described first groove and described second groove, and described coaxial annulus irreversibly enters described second groove from described first groove after described detection of gear enters rotation status.
2. according to the described laser printer developing apparatus of claim 1, it is characterized in that described detection of gear is along the continuous equally distributed complete gear wheel of self its gear teeth of circumferencial direction.
3. laser printer developing apparatus according to claim 1 and 2, described triggering driving lever one end that it is characterized in that being supported in the described guard shield through hole extends axially out outside the described guard shield through hole along described developer roll.
4. laser printer developing apparatus according to claim 3 is characterized in that described spring is the coil spring that is in compressive state, and it is fixed in described guard shield perpendicular on the axial inwall of described developer roll with the relative end in described force side.
5. according to the described laser printer developing apparatus of claim 3, it is characterized in that described spring is the coil spring that is in extended state, it is fixed on the described outside surface with the relative end in described force side.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620154908 CN200983078Y (en) | 2006-12-13 | 2006-12-13 | Film development device for laser printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620154908 CN200983078Y (en) | 2006-12-13 | 2006-12-13 | Film development device for laser printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200983078Y true CN200983078Y (en) | 2007-11-28 |
Family
ID=38910232
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620154908 Expired - Fee Related CN200983078Y (en) | 2006-12-13 | 2006-12-13 | Film development device for laser printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200983078Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149816A (en) * | 2013-03-15 | 2013-06-12 | 珠海天威飞马打印耗材有限公司 | Developing box for laser printer |
| CN103309209A (en) * | 2013-06-26 | 2013-09-18 | 珠海天威飞马打印耗材有限公司 | Developing box for laser printing machine |
| CN110764384A (en) * | 2019-09-02 | 2020-02-07 | 珠海市汇威打印机耗材有限公司 | Processing box |
-
2006
- 2006-12-13 CN CN 200620154908 patent/CN200983078Y/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103149816A (en) * | 2013-03-15 | 2013-06-12 | 珠海天威飞马打印耗材有限公司 | Developing box for laser printer |
| WO2014139304A1 (en) * | 2013-03-15 | 2014-09-18 | 珠海天威飞马打印耗材有限公司 | Developing cartridge for laser printer |
| CN103149816B (en) * | 2013-03-15 | 2014-12-17 | 珠海天威飞马打印耗材有限公司 | Developing box for laser printer |
| US9442424B2 (en) | 2013-03-15 | 2016-09-13 | Print-Rite · Unicorn Image Products Co., Ltd. Of Zhuhai | Developing cartridge for laser printer comprising a stirring wheel and an activation mechanism |
| EP2975464A4 (en) * | 2013-03-15 | 2016-11-02 | Print Rite Unicorn Image Products Co Ltd Zhuhai | Developing cartridge for laser printer |
| CN103309209A (en) * | 2013-06-26 | 2013-09-18 | 珠海天威飞马打印耗材有限公司 | Developing box for laser printing machine |
| CN103309209B (en) * | 2013-06-26 | 2015-12-09 | 珠海天威飞马打印耗材有限公司 | Developing box for laser printer |
| CN110764384A (en) * | 2019-09-02 | 2020-02-07 | 珠海市汇威打印机耗材有限公司 | Processing box |
| CN110764384B (en) * | 2019-09-02 | 2023-12-05 | 珠海市汇威精密制造有限公司 | Process 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: 20151213 |
|
| EXPY | Termination of patent right or utility model |