CN201177737Y

CN201177737Y - Developer component

Info

Publication number: CN201177737Y
Application number: CNU2008200464063U
Authority: CN
Inventors: 金本友; 林龙
Original assignee: Print Rite Technology Development Co Ltd of Zhuhai
Current assignee: Print Rite Technology Development Co Ltd of Zhuhai
Priority date: 2008-04-11
Filing date: 2008-04-11
Publication date: 2009-01-07
Anticipated expiration: 2018-04-11

Abstract

The utility model discloses a developer cartridge, which can be matched with a drum cartridge to form a toner cartridge used for a laser imaging device. The developer cartridge comprises a developer cartridge frame with a toner hopper and a developer roller rotationally supported between the two side walls of the developer cartridge frame, wherein, a front side positioning piece assembled in the positioning guide groove of the drum cartridge in a disassembly manner and a rear positioning piece supported on the top side of the two side walls of the drum cartridge by using the developer cartridge are respectively arranged on the two side walls. Since the rear side positioning pins on the left side wall and the right side wall of the developer cartridge are eliminated, not only the structure is simplified, but also the material is saved, and the cost is also reduced; and moreover, the versatility of the developer cartridge is enhanced through the improvement, so that the developer cartridge is compatible with various drum cartridges with identical series and different models, thereby the purposes of shortening the development and production cycles and reducing the manufacturing cost can be achieved.

Description

Developing device

Technical field

The utility model relates to a kind of developing device, and this developing device can cooperate formation to be applied to the cartridge of laser image forming apparatus with the drum assembly.

Background technology

In laser image forming apparatus such as laser printer, be provided with cartridge usually as consumable part, this cartridge is laid in carbon dust on the electrostatic latent image that is formed on photosensitive drums and develops, and the carbon dust that is consumed that develops is provided by the powder storehouse in the cartridge.Above-mentioned cartridge is made of bulging assembly that is equipped with photosensitive drums and the developing device that is equipped with developer roll and powder storehouse usually, wherein, reason based on serviceable life, drum assembly and developing device can independently be sold, the user in use can buy bulging assembly or developing device assembles voluntarily according to the needs of oneself like this, and such cartridge is referred to as split type cartridge usually.

The patent No. is that the US Patent specification of US7305204 discloses a kind of split type cartridge, the preceding upper lateral part of two sidewalls of its developing device respectively be distributed with a guide member, the rear side lower part of developing device right side wall is furnished with a guide member, and each guide member is provided with a rotating major part needle rollers; The preceding upper lateral part of two sidewalls of drum assembly respectively is distributed with a guide groove, and the rear side lower part of drum assembly right side wall is furnished with a locating channel.In assembling process, the major part needle rollers on each guide member enters respectively in the corresponding locating channel, finishes cooperating of bulging assembly and developing device, and the user just can finish assembling process by shirtsleeve operation.In the bulging assembly of commercially available similar structures, the bulging assembly of homologous series different model adopts the locating channel with varying number to discern usually, and corresponding developing device has then adopted the guide member of respective numbers.As the disclosed bulging assembly embodiment of above-mentioned patent specification, then be to adopt 3 locating channels, corresponding developing device adopts 3 guide members; Also occurred having the bulging assembly of 4 guide channels in the commercially available product, same, corresponding developing device also must adopt 4 guide members.Like this, along with the increase and the variation of different model drum assembly, the structure of developing device framework also needs to change thereupon, causes producing the increase of a series of link costs of accumulating, therefore, just seem particularly important at the good developing device of a kind of versatility of bulging component design of homologous series different model.

Summary of the invention

The purpose of this utility model is to provide a kind of developing device of simple in structure, highly versatile, to reduce its manufacturing cost.

Provide a kind of developing device according to above-mentioned purpose, comprised the developing device framework that has the powder storehouse, this framework has the first side wall, second sidewall that is oppositely arranged and the diapire that connects above-mentioned two sidewalls; Rotatably be supported on the developer roll between described two sidewalls; Be respectively equipped with the keeper that can cooperate on described two sidewalls, have locating channel respectively on two sidewalls of described bulging assembly with the drum assembly; Wherein, described keeper comprises and can be assemblied in the front side keeper in the described locating channel and can utilize the deadweight of developing device to be bearing in rear side keeper on the top margin of described bulging assembly two side with removably.

Owing to cancelled the rear side register pin that is used to import locating channel in the prior art on the left side wall of above-mentioned developing device and the right side wall, change by adopting the deadweight to utilize developing device to be bearing in rear side keeper on the top margin of bulging assembly two side, not only simplify the structure, saved material and reduced cost; The more important thing is,, improved the versatility of developing device, make the multiple bulging assembly that it can compatible homologous series different model, thereby reach the reduction product development production cycle, reduce the purpose of manufacturing cost by such improvement.

Further scheme is that described front side keeper is positioned at the front upper part of the described the first side wall and second sidewall.Preferably, described front side keeper comprises first register pin that outwards protrudes out from described the first side wall and second register pin that outwards protrudes out from described second sidewall; Described first register pin and second register pin are positioned on the same axis, and this parallel axes is in the axis of described developer roll; Described first register pin or second register pin are more farther to the distance of described diapire than described developer roll to the distance of described diapire.The outer end of described first register pin and second register pin can be provided with a rotating roller respectively, can make register pin more steadily import locating channel smoothly like this.

Described rear side keeper can be arranged on the upper back of the described the first side wall or second sidewall, also can be arranged on the upper back of the described the first side wall and second sidewall; Described rear side keeper is more farther to the distance of described diapire than described front side keeper to the distance of described diapire.Described rear side keeper can adopt the location convex tendon.

Description of drawings

Fig. 1 is the stereographic map of observing from the left front of a kind of better embodiment of the utility model developing device;

Fig. 2 is the stereographic map of observing from the right front of developing device shown in Figure 1;

Fig. 3 is developing device shown in Figure 1 and a kind of released state synoptic diagram that rouses assembly;

Fig. 4 is developing device shown in Figure 3 and the assembled state synoptic diagram that rouses assembly.

Below in conjunction with the drawings and specific embodiments the utility model is described in further detail.

Embodiment

Be convenient narration, hereinafter the directed principle of each assembly is: shown in the coordinate arrow among each figure, when this assembly was packed imaging device into, a side of facing the operator was a rear side, and its opposition side is the front side; By rear side benchmark about conduct when the front side is seen.

Referring to Fig. 1 and Fig. 2, a kind of developing device 1 that removably is applied to imaging device comprises: developing device framework 2, this framework 2 have left side wall 21, right side wall 22 that is oppositely arranged and diapire 23, roof and the rear wall that connects above-mentioned two sidewalls.Developing device framework 2 inside mainly are divided into powder storehouse and developing chamber two parts, and wherein the powder storehouse is used to store the carbon dust of development usefulness, also are provided with in the powder storehouse to be used for puddle support (not shown) that carbon dust is stirred; Then be provided with parts such as powder feeding roller 3, developer roll 4 and powder delivery cutter 5 in the developing chamber, wherein powder feeding roller 3 and developer roll 4 rotatably are supported between left side wall 21 and the right side wall 22, and a part of surface of developer roll 4 is exposed to the outside.Form extruding between powder feeding roller 3 and the developer roll 4 and contact, powder feeding roller 3 is supplied to developer roll 4 by rotating the carbon dust that the powder storehouse is provided, and powder delivery cutter 5 is used to regulate the thickness of developer roll 4 surface carbon bisques.

The left side wall 21 of developing device framework 2 is provided with gear set 6, this gear set 6 drives attachment 61 by one and cooperates to accept driving force with the driving head (not shown) of imaging device, and the driving force that imaging device is imported passes to puddle support, powder feeding roller 3 and developer roll 4 respectively by each gear of gear set 6 then.

Front upper part at left side wall 21 is provided with a left register pin 211, front upper part at corresponding with it right side wall 22 also is provided with a right register pin 221, left side register pin 211 and right register pin 221 are positioned on the same axis substantially, and this parallel axes is in the axis of developer roll 4.Left side register pin 211 and right register pin 221 are equal substantially to the distance of diapire 23, and this distance is more farther to the distance of diapire 23 than developer roll 4.The outer end of left side register pin 211 and right register pin 221 is respectively equipped with a rotating roller 212 and 222.

Be provided with a left positioning bar 213 in the upper back of left side wall 21, upper back at corresponding with it right side wall 22 also is provided with a right positioning bar 223, left side positioning bar 213 and right positioning bar 223 are positioned on the same axis substantially, and this parallel axes is in the axis of developer roll 4.Left side positioning bar 213 and right positioning bar 223 are equal substantially to the distance of diapire 23, and this distance is more farther to the distance of diapire 23 than left register pin 211 or right register pin 221.

Referring to Fig. 3, a kind of assembly 7 that rouses that cooperates with above-mentioned developing device 1 comprises that one is used for waste powder hopper that useless powder reclaims and left side wall 71 that rotatably is supported in bulging assembly 7 and the photosensitive drums 8 between the right side wall.Photosensitive drums 8 by the charger uniform charging after, be exposed under the irradiation optical system of imaging device, can on photosensitive drum surface, form electrostatic latent image; This electrostatic latent image develops to the developer image by developer roll 4 again, and the developer image is transferred on the paper medium; Then, the developer image that is transferred by the hot photographic fixing of fixing member on paper; After the image transfer, the useless powder that remains on the photosensitive drum surface is recycled in the waste powder hopper by cleaning member.The drum assembly 7 left side wall 71 have locating channel 72 and a following locating channel 73 on one, with left side wall 71 relatively symmetrically, the drum assembly right side wall also have locating channel and a following locating channel on one.With regard to last locating channel 72, the one end has opening, and the other end seals, and has the rearward end 722 of a flat bottoms 721 and a circular arc at blind end.In addition, on the left side wall 71 of drum assembly, also have an opening 75, can pass for the driving head of imaging device.

Referring to Fig. 3 and Fig. 4, when above-mentioned developing device 1 assembles with drum assembly 7, left register pin 211 on the developing device left side wall imports in the last locating channel 72 of drum assembly left side wall 71 by roller 212, and finally is positioned the blind end place of locating channel 72 on this; Accordingly, the right register pin on the developing device right side wall also imports in the last locating channel of drum assembly right side wall by roller, and is positioned the blind end place of locating channel on this.When the left and right register pin of developing device 1 imports the locating channel of drum assembly and is positioned their blind ends, location convex tendon 213 on the developing device left side wall 71 utilizes the deadweight of developing device 1 to be bearing on the top margin 74 of bulging assembly left side wall 71, accordingly, location convex tendon on the developing device right side wall utilizes the deadweight of developing device to be bearing on the top margin of bulging assembly right side wall, thereby realizes the location at developing device rear portion.The opening 75 that the driving head of imaging device can pass on the bulging assembly left side wall 71 cooperates with the driving attachment 61 of developing device 1, to drive each rotatable parts on developing device 1 and the drum assembly 7.

Owing to cancelled the rear side register pin that is used to import locating channel in the prior art on the left side wall 21 of above-mentioned developing device 1 and the right side wall 22, change by the rear side that adopts the deadweight that can utilize developing device to be bearing on the top margin of bulging assembly two side and locate convex tendon, not only simplify the structure, saved material and reduced cost; The more important thing is,, improved the versatility of developing device, make the multiple bulging assembly that it can compatible homologous series different model, thereby reach the reduction product development production cycle, reduce the purpose of manufacturing cost by such improvement.

Above-described only is preferred implementation of the present utility model; under the prerequisite that does not break away from the present utility model design; part-structure to the developing device framework improves or replaces; for example only on an one sidewall, the rear side keeper is set; perhaps its front side keeper does not adopt roller to roll and imports locating channel; but adopting the structure that directly slips into locating channel, such embodiment also belongs to protection domain of the present utility model.

Claims

1, developing device comprises

The developing device framework that has the powder storehouse, this framework have the first side wall, second sidewall that is oppositely arranged and the diapire that connects above-mentioned two sidewalls;

Rotatably be supported on the developer roll between described two sidewalls;

Be respectively equipped with the keeper that can cooperate on described two sidewalls, have locating channel respectively on two sidewalls of described bulging assembly with the drum assembly;

It is characterized in that:

Described keeper comprises and can be assemblied in the front side keeper in the described locating channel and can utilize the deadweight of developing device to be bearing in rear side keeper on the sidewall top margin of described bulging assembly with removably.

2, developing device according to claim 1 is characterized in that:

Described front side keeper is positioned at the front upper part of the described the first side wall and second sidewall.

3, developing device according to claim 1 and 2 is characterized in that:

Described front side keeper comprises first register pin that outwards protrudes out from described the first side wall and second register pin that outwards protrudes out from described second sidewall.

4, developing device according to claim 3 is characterized in that:

Described first register pin and second register pin are positioned on the same axis, and this parallel axes is in the axis of described developer roll.

5, developing device according to claim 4 is characterized in that:

Described first register pin or second register pin are more farther to the distance of described diapire than described developer roll to the distance of described diapire.

6, developing device according to claim 5 is characterized in that:

The outer end of described first register pin and second register pin respectively has a rotating roller.

7, developing device according to claim 1 is characterized in that:

Described rear side keeper is arranged on the upper back of the described the first side wall or second sidewall.

8, developing device according to claim 1 is characterized in that:

Described rear side keeper is arranged on the upper back of the described the first side wall and second sidewall.

9, according to claim 7 or 8 described developing devices, it is characterized in that:

Described rear side keeper is more farther to the distance of described diapire than described front side keeper to the distance of described diapire.

10, developing device according to claim 9 is characterized in that:

Described rear side keeper is the location convex tendon.