CN1437076A

CN1437076A - Universal powder box

Info

Publication number: CN1437076A
Application number: CN 02102284
Authority: CN
Inventors: 丁雪平; 刘剑平; 吴连俊
Original assignee: Print Rite Unicorn Image Products Co Ltd
Current assignee: Print Rite Unicorn Image Products Co Ltd
Priority date: 2002-02-05
Filing date: 2002-02-05
Publication date: 2003-08-20
Anticipated expiration: 2022-02-05
Also published as: CN1328630C

Abstract

The universal powder box is the development powder supply device for laser printer. The universal powder box includes one box with powder bin and cover, one stirrer inside the powder bin, one powder feeding roller in the outlet of the powder bin, one developing roller contacting with the powder feeding roller and one locking device for the powder box to be set in and taken out from the sensitive drum. The cover has one upper planar surface, and after being installed, the plane is located below one corresponding raised edge of the printer. In the roller end gear combination outside one side wall of the box, there are two with driving force driving position. The powder box is suitable for several types of printer.

Description

Universal powder box

Technical field

The present invention relates to use the electrograving process equipment of electric charge figure, the particularly feeding mechanism of laser printer contrasting power.

Background technology

The principle of work of monochromatic laser printer is summarized as follows: the text graphic information conversion of computing machine being sent here by laser instrument generates laser beam, and after a series of optical systems along the axis uniform speed scanning photosensitive drums of the photosensitive drums of having filled electricity and having pivoted, thereby form and the corresponding electrostatic latent image of input information, develop successively then, transfer printing, photographic fixing, from but obtain printout.Chinese patent application 99121002.6 discloses a kind of image process unit of being combined separably by photosensitive drums box and powder box, has a photosensitive drums and a transfer roll in the photosensitive drums box at least, and powder storehouse, puddle support, powder feeding roller and developer roll etc. are arranged in the powder box.Powder box based on this principle of work all has a power intake that drives tumbler rotation in the powder box promptly to drive the position, for the powder box that prevents a certain model is installed on the different model printer mistakenly, not only drive the bit position difference, and, cover also just like Fig. 5, projection 33 shown in Figure 6 at powder box, Fig. 6 is that the master of existing powder box looks synoptic diagram, and Fig. 5 is the left view of Fig. 6, projection 33 is interrupted on the length direction of powder box, and it is positioned at the upper back of box body on the side-looking direction.The lid lower surface of putting into mouthful at the printer image process unit then has downward projection, and it constitutes the engagement shapes with projection 33 when closing, and the different of the projection at two places length in the vertical and position have avoided the powder box shift to install effectively.

Summary of the invention

By market survey, find that the printer and the employed image process unit of models such as LJ2312P, LJ2412P, LJ8212N, LJ6112MFP, LJ6112MFC, LJ6212MFC, Brother-HL1240, HL1250, HL1650 have a common characteristic at least, be exactly: the development principle of work of image process unit is identical; The structure and the size of photosensitive drums box are basic identical; Matching relationship when photosensitive drums and developer roll work is identical; Though the power drive position of powder box is different, mainly is arranged in two fixing positions.Therefore, can think the general character that promptly has structure roughly the same that cooperates of above-mentioned printer and powder box has exclusive individual character mutually again, and they have formed a specific family of laser printer image process unit.Can design a kind of powder box structure, make its can by all printers of this family compatibility, and guarantee that good print quality has become the present invention will solve major subjects.

Another problem that will solve of the present invention is to propose a new locking and placing device, makes the versatility of powder box stronger.

For this reason, powder box provided by the invention is identical with prior art on primary structure, comprise a box body and a lid that has the powder storehouse, be bearing between the box body opposing sidewalls and be positioned at the stirring apparatus in powder storehouse, powder feeding roller that is bearing between the box body opposing sidewalls and is positioned at exit, powder storehouse, one are bearing between the box body opposing sidewalls and the developer roll that contacts with powder feeding roller, and box body also has guiding, locking and placing device outward.Main creation point of the present invention is that the upper surface of lid is a plane substantially, and this plane is positioned under the lower edge of the corresponding lid of printer lower surface projection after the installation, in addition, in each the roller end gear set outside box side wall, has two to have the driving position that power is subjected to mouth.

By such scheme as seen, powder box provided by the present invention is put into mouth when putting into by the image process unit of the mentioned arbitrary model printer in front, all can be in place and fixing by guide piece and locking and placing device, because powder box lid is one to be the structure on plane substantially, and being positioned at image process unit puts under the flap lower surface projection, so when guaranteeing big as far as possible capacity, solved the problem of printer cover that allow to specific powder box approval; Again because powder box has two gears to have driving force to be subjected to mouth in gear set, two specific driving positions are promptly arranged, therefore, the powder box the sort of printer that drives the position of packing into no matter, can both receive power reliably and carry out work, solve the problem of printer power output that allow specific powder box approval.

The beneficial effect that the present invention brings thus: help manufacturer and businessman, made things convenient for printer user.Concerning producer, adopt powder box provided by the invention to mean and saved the mould different production lines required with different product; Concerning businessman, reduced the kind of product, reduced the sales force is carried out the technical training amount of complicated powder box type and printer pairing and sells the mistake phenomenon, that is to say to have made things convenient for sale; Printer user has also in use obtained facility, and the powder box and the printer that have not had to buy do not match the worry that can't install.

Be further to improve versatility, locking and placing device can adopt elastic spring and two ends that hook is arranged and put with the hinged lock of box body rear wall that bar is supporting to be finished.

Description of drawings

Fig. 1 is the front view of embodiment one;

Fig. 2 is the A-A cut-open view of Fig. 1;

Fig. 3 is the right view of Fig. 1;

Fig. 4 is the shaft side decomposition figure of power drive position;

Fig. 5 is the structural representation of an existing side of powder box;

Fig. 6 is the front view of existing powder box.

Elaborate below in conjunction with embodiment provided by the invention and accompanying drawing:

Embodiment

Referring to Fig. 1, lid 1 upper surface is smooth plane, and left end has the development roll shaft to extend naturally and the conductive shaft 34 that forms, and right-hand member is a gear set.

Referring to Fig. 2; box body 2 and lid 1 inner chamber that surrounds comprise a powder storehouse 3; a stirring apparatus is arranged in the powder storehouse; stirring apparatus is made of shaft 6 and the puddle support 4 that is fixed on the axle; shaft is bearing on two sidewalls 5 of box body 2; there is a meal outlet 7 in airtight powder storehouse 3 fully; there are the powder feeding roller 8 and the developer roll 9 that are bearing in 5 of two sides in meal outlet 7 belows; expand and cover 10 and before the powder box installation is used, seal powder box and developer roll 9 protective effects; when using, installation removed; the groundwork principle of powder box is as follows; during power drive, puddle support 4 constantly stirs the developer in the powder storehouse 3 and can flow out by higher meal outlet 7 from the position, and flows to developer roll 9 through powder feeding roller 8; again according to latent image on the photosensitive drums need transmit, thereby finish the work of powder box.

Referring to Fig. 3, right side wall external fixation at powder box has the bearing seat 11 that drives the position, its make that driven wheel can move steadily, also have position of driving 13 and coaxial with it gear on the sidewall, the bull wheel engagement of this gear and duplex carrier gear 12, the steamboat of carrier gear 12 and 19 engagements of the shaft end gear of shaft, the driving position 23 on carrier gear 20 and this gear shaft also is contained on the sidewall, and bull wheel, powder feeding roller shaft end gear 21 and the developer roll shaft end gear 22 of its while with carrier gear 12 meshes.When driving position 13 receives driving force, by its coaxial gear driven gear 12 bull wheels, gear 19 and gear 20 successively, gear 20 and gear 21 and gear 22 engagements; When driving position 23 received driving force, the gear 12 of leading up to was passed to gear 19, and

gear

20 and 21 are passed in another road, can make the powder box operate as normal thereby no matter drive position input power from that.

In addition, the fixing end of elastic spring 17 in the bottom of box body, the curvature of elastic spring 17 is greater than the curvature of box body in the corresponding position, its another free end contacts with the box body rear wall, when powder box was packed the photosensitive drums box into, the developer roll of front end contacted with photosensitive drums, and 17 of the elastic springs of rear end squeeze between box body and photosensitive drums box body, produce extruding force forward, make the front and back positioning stablity of powder box.Lock is put bar 15 and is hinged on the box body rear wall, between itself and the box body torsion spring 14 is housed, the lock that has a hook end 18 is put bar 15 two extreme positions, one is locking bit shown in Figure 3, when being in this position, torsion spring 14 internal force minimums, hook 18 are hooked in the lockhole on the photosensitive drums box plate, and the relative photosensitive drums box of powder box can not be moved up and down; Another is that manpower is pressed when locking the release pressing plate 16 of putting bar 15 one, overcomes the internal force of torsion spring 14, makes lock put bar and turn to the position that hook 18 is thrown off lockholes around hinge clockwise in Fig. 3, thereby discharge powder box with respect to the constraint of photosensitive drums box at above-below direction.

Referring to Fig. 4, there is the

gear shaft rod

26,31 of one that the

gear

27,20 that has

driving position

13,23 is installed respectively on the box side wall, two

axis holes

28 and 29 should be arranged on the bearing seat 11 mutually, its assembling back is fastening by three

screws

24,25,30.For making powder box behind the photosensitive drums box of packing into, can be resisted against the other end shown in Figure 4, front end at box side wall is provided with an elastomer block 32, the arced terminus of elastomer block 32 is flexibly oppressed the sidewall at the photosensitive drums box in the powder box box body enters the process of photosensitive drums box, play slide-and-guide on the one hand, after in place, make the conductive shaft 34 among Fig. 1 keep best electrically connecting on the other hand with printer.

Claims

1, universal powder box, comprise a box body and a lid that has the powder storehouse, be bearing between the box body opposing sidewalls and be positioned at the stirring apparatus in powder storehouse, powder feeding roller that is bearing between the box body opposing sidewalls and is positioned at exit, powder storehouse, one are bearing between the box body opposing sidewalls and the developer roll that contacts with powder feeding roller, and make powder box can enter the guide piece and the locking and placing device of photosensitive drums box smoothly;

It is characterized in that: the upper surface of lid is a plane substantially, and this plane is positioned under the lower edge of the corresponding lid of printer lower surface projection after the installation, in each the roller end gear set outside box side wall, has two to have the driving position that power is subjected to mouth.

2, universal powder box according to claim 1 is characterized in that: described locking and placing device is constructed as follows:

One end is fixed on box body bottom, and the other end is free end and the elastic spring that contacts with the box body rear wall;

There is hook at two ends and puts bar with the hinged lock of box body rear wall.

3, universal powder box according to claim 1 and 2 is characterized in that: lock is put between bar and the box body rear wall and is equipped with torsion spring.