CN1051160C - Process cartridge, method for assembling process cartridge and image forming apparatus - Google Patents

Abstract

To provide an absorptive body utilized for a disposable diaper etc., and with excellent dimensional stability. An absorptive body contains a pulp and a water absorptive polymer and is prepd. by mixing 5-20wt.% thermoplastic fibrous material to the pump and 5-20wt.% high m.p. fiber with a m.p. being higher than that for the thermoplastic fibrous material to the pulp and thermoforming the mixture at a temp. where the thermoplastic fibrous material is fused.

Description

Handle the method and the image device of magazine, assembling processing magazine

The image device that the present invention relates to handle the method for magazine, assembling processing magazine and have this processing magazine.Said image device can be such as laser beam printer, Xerox, telewriter, word processor etc.

In resembling this class image device of printer, carry out selectivity exposure by image carrier and form latent image uniform charged, with toner the toner video is transferred on the recording chart successively then, this latent image is developed, thereby with picture record on recording chart.In this kind equipment,, just must replenish new toner whenever toner-out or inefficacy.Not only yet replenish the operation trouble of toner and always cause environmental pollution.In addition, also must the various elements of periodic maintenance.

For this reason, the what is called that photosensitive drums, charger, developing mechanism, cleaning mechanism etc. integrally are contained in the magazine shell is handled magazine, be removably mounted in the image device, thereby can carry out the parts that replenish or change end of life of toner, and make maintenance become more convenient.Such processing magazine has proposed and has been put to practicality, and for example U.S. Patent No. 3985,436; 4,500,195; 4,540,268 and 4,267,710 disclosed persons.

When being contained in this processing magazine in the image device, the electric contact of image device and the electric contact sliding contact of handling magazine, with image carrier electrical ground.This sliding contact between the electric contact makes to produce load along the direction of insertion of magazine.

On the other hand, in using the laser beam printer of handling magazine, leak, in the light path of laser, be provided with the device (laser shutter) of openable blocking laser light path for fear of the laser of this equipment except that the imaging effect.For this laser shutter of opening and closing, handle magazine and be provided with the projection that this laser shutter of keying is used, when a processing magazine was inserted printer, this projection was close to a certain position of occluding device and laser shutter is opened.When projection is close to occluding device, just produce load along the magazine direction of insertion.

In addition, when selfimaging equipment is pulled down the processing magazine, adopt over cap to hide the part that image carrier has exposed, prevent that it is impaired.When the processing magazine is inserted image device, make over cap be close to a certain position of image device, just can open this over cap.In inserting processing magazine process, open this over cap, also can produce load along handling the magazine direction of insertion.

As mentioned above, when inserting in the image device, can produce various loads to the processing magazine along this magazine direction of insertion.Rock so tend to take place some when just worrying the installation and removal magazine, thereby the performance accuracy of magazine is loaded in infringement.

The object of the present invention is to provide a kind of method and image device of handling magazine, this processing magazine of assembling, in the process of magazine insertion image device, realize handling the stability of magazine.

Another object of the present invention is to provide a kind of method and image device of handling magazine, this processing magazine of assembling, can reduce some that will handle magazine in the magazine insertion image device process and rock.

Another purpose of the present invention is to provide a kind of method and image device of handling magazine, this processing magazine of assembling, makes their compact in size.

A further object of the present invention provides a kind of method and image device of handling magazine, this processing magazine of assembling, one of them space can be used to effectively install and opens and closes used mechanism such as laser shutter, and can reduce when handling magazine with respect to the image device loading and unloading some rock.

A further object of the present invention provides a kind of method and image device of handling magazine, this processing magazine of assembling, when handling magazine with respect to the image device loading and unloading, produce load at two axle heads of image carrier and rock, thereby mount and dismount magazine reposefully with some that reduces magazine.

By way of parenthesis, owing to during with respect to image device loading and unloading magazine, handle the electric-conductor of magazine and the sliding contact of image device electric contact, produce load.On the other hand, since the other end of image carrier away from electric-conductor, so will produce the load of opening laser shutter.

Fig. 1 is equipped with the longitudinal diagram of the image device of handling magazine;

Fig. 2 is the skeleton view of image device;

Fig. 3 is a cross-sectional view of handling magazine;

Fig. 4 is a skeleton view of handling magazine;

Fig. 5 is the partial view of left rail spare;

Fig. 6 is the partial view of right rail guide piece;

Fig. 7 is the exploded view that the magazine framework is handled in expression;

Fig. 8 A is the longitudinal sectional drawing of photosensitive drums;

Fig. 8 B is the transverse cross-sectional view of photosensitive drums;

Fig. 9 is the skeleton view of the electric-conductor that contacts with metal shaft;

Figure 10 is the view of charging roller and bearing thereof;

Figure 11 is the decomposition diagram that shows overlapping relation between bloated sheet and toner leakage preventing sealing;

Figure 12 shows that developing blade, toner leakage preventing sealing and the position of expanding between the sheet concern;

Figure 13 A is the cut-open view along A-A line among Figure 11;

Figure 13 B is the cut-open view along B-B line among Figure 11;

Figure 14 A and 14B show the situation that the sheet that expands is bent;

Figure 15 shows that sharp-pointed rib penetrates the amplification profile of development scraping blade situation;

Figure 16 is the sectional view that shows the bonding agent protuberance of the silk that is used to discharge;

Figure 17 A shows the situation of the bonding agent protuberance of bonding discharge silk;

Figure 17 B shows that the bonding agent of protuberance is flattened cunning; And

Figure 17 C shows the situation that has installed sealing additional;

Figure 18 A shows does not have crooked discharge silk; Figure 18 B shows crooked discharge silk;

Figure 19 shows the situation that epiphragma is pulled out obliquely from handle magazine;

Figure 20 is the relation that shows between epiphragma and toner leakage preventing seal when epiphragma tilts to pull out;

Figure 21 shows apart from one side of toner leakage preventing sealing the anti-perspective view that tears sheet that toner leakage preventing seals is housed at certain intervals;

Figure 22 shows photosensitive drums, the various sizes of developing cylinder and charging roller;

Figure 23 shows the various sizes of charging roller;

Figure 24 shows the toner leakage preventing sealing and is positioned at the planimetric map of the dividing plate at cleaning balde two ends;

Figure 25 is the skeleton view that shows the toner leakage preventing sealing and be positioned at cleaning balde two endplates;

Figure 26 is the view that explanation is contained in the toner leakage preventing sealing method of cleaning balde end;

Figure 27 is the view of explanation developing frame release method;

Figure 28 is the view of explanation cleaning framework release method;

Figure 29 is to use ultra-sonic welded with toner framework and developing frame step of connecting figure;

Figure 30 shows along laterally being formed on toner framework and the developing frame and the inner positioning boss and the view of pilot hole;

Figure 31 shows longitudinally to be formed on toning framework and the developing frame and the inner positioning boss and the view of pilot hole;

Figure 32 A shows that the toner framework is contained in the situation on the installing plate; Figure 32 B shows that the cleaning framework is contained in the situation on the installing plate;

Figure 33 shows the step that the toner framework is installed by an automatic equipment;

Figure 34 shows the step that the cleaning framework is installed by an automatic equipment;

Figure 35 and 36 shows when the cleaning framework is placed on the table top, situation or structure that photosensitive drums does not contact with this table top;

Figure 37 shows when the toner development framework is placed on the table top, developing cylinder not with this table top contacting structure;

Figure 38 shows the partial, exploded perspective view that connects toner framework and cleaning frame method with web member;

Figure 39 A is the skeleton view when web member is set up; Figure 39 B is the cut-open view when web member is set up;

Figure 40 is the fragmentary, perspective view that handles the magazine left side;

Figure 41 handles pack into the longitudinal diagram of image device of magazine;

Figure 42-the 45th handles pack into the local amplification profile of image device of magazine;

Figure 46 handles the local amplification profile of magazine when image device is pulled down;

Figure 47 is the skeleton view of switch laser tripper;

Figure 48 is the skeleton view that has the grip part of cross rib;

Figure 49 is the skeleton view with the grasped grip part;

Figure 50 shows the skeleton view of the grip part that has groove;

Figure 51 shows the skeleton view of the grip part that has projection;

Figure 52 is the fragmentary, perspective view of each connecting point position on the display process magazine;

Figure 53 is the planimetric map that shows each connecting point position on the image device;

Figure 54 is the sectional view that concerns between expression contact and the contact pin;

Figure 55 is the testing circuit that detects the toner surplus;

Figure 56 is that toning dosage and toner surplus detect the graph of a relation between voltage;

Figure 57 is that the embodiment of the invention is handled the circuit that magazine is installed with the phase inverter inspection;

Figure 58 has the digital signal inspection to handle the circuit that magazine is installed;

Figure 59 is the functional block diagram of control device;

Figure 60 is the decomposition diagram that shows cleaning framework inner structure;

Figure 61 and 62 is views of the used bearing of charging roller among another embodiment;

Figure 63 is the skeleton view of the used bearing of charging roller among the another embodiment;

Figure 64 is the mechanism that prevents the contact element distortion among another embodiment;

Figure 65 is the mechanism that prevents the contact element distortion among the another embodiment;

Figure 66 be on the developing frame second rib by the embodiment of sharpening;

Figure 67 A is that the discharge silk curves semicircular view;

Figure 67 B is that the discharge silk curves trapezoidal view;

Figure 68 is the embodiment that opening is arranged on the developing frame, the discharge silk is inserted this opening can prevent the unsteady of silk that discharge;

Figure 69 is the embodiment that a circular hole is arranged on developing frame, the discharge silk is inserted this circular hole can prevent the unsteady of silk that discharge.

At first, with reference to description of drawings according to the processing magazine of first embodiment and use the image device of this processing magazine.

(below be that the generality of handling magazine and having an image device of this processings magazine is illustrated):

The one-piece construction of image device is described first.Fig. 1 is the longitudinal diagram that the laser copier of handling magazine is housed about a kind of situation of the present invention, and Fig. 2 is the skeleton view of laser copier, and Fig. 3 is a cross-sectional view of handling magazine, and Fig. 4 is a skeleton view of handling magazine.

As shown in Figure 1, be irradiated onto from the video of optical system 1 accordingly with video information in image device A and photosensitive drums (as a kind of image carrier) gone up form latent image, latent image is developed by developer (hereinafter being called " toner ") and forms toner image.When forming toner image, conveying device 3 is delivered to the imaging station of handling magazine B with recording medium 2, at imaging station transfer device 4 toner image that is formed on the photosensitive drums is transferred on the recording medium 2.Then, recording medium 2 is sent to fixing device 5, the toner image that is transferred at this place by photographic fixing on recording medium.Then, recording medium is sent to output area 6.

As shown in Figure 3, in being provided with the processing magazine B of imaging station, the photosensitive drums of 8 pairs of rotations of charging device (a kind of image carrier) 7 uniform charging.Passing developing apparatus 10 from the video light of optical system 1 is visible toner image with this developable latent image.Toner image is transferred on the recording medium 2 then.In addition, after transfer printing, cleaning device 11 is removed the residual toner of staying on the photosensitive drums 7.

Handling magazine B comprises: the toner framework 12 that has conduct first framework of toner storer, have the developing frame 13 of conduct second framework of developing cylinder, and the cleaning framework 14 that has conduct the 3rd framework of photosensitive drums 7, cleaning device 11 and like.Among Fig. 2, label 15a represents operation part, wherein is provided with the duplicating number and inserts key, and density is inserted key, examination seal key, and (hereinafter will illustrate) magazine is changed pilot lamp and similar key.

Each parts of imaging device A and dress processing magazine B thereon will be described below all sidedly.

{ image device }:

To the optical system of relevant image device A be described successively below, conveying device, transfer device, fixing device and magazine erecting device.

(optical system):

Optical system 1 according to from the video information of external device (ED) with the video rayed on photosensitive drums 7.As shown in Figure 1, optical system comprises and contains polygon mirror 1b, scan module 1c, and condenser lens 1d, the optical unit 1a of catoptron 1e and laser diode 1f, this optical unit are positioned at the framework 15 of device A.

When for example the image signal of computing machine, word processor and similar device (being the main frame 62 among Figure 59) arrived from external device (ED), laser diode 1f sent light according to this image signal, and this light is launched into polygon mirror 1b as video light.Scan module 1c makes polygon mirror 1b high speed rotating, and impinged upon on the photosensitive drums 7 by video light line focus lens 1d and the catoptron 1e that polygon mirror reflects, so video light is in exposure of photosensitive drums 7 surface selectivity ground and then formation and the corresponding latent image of video information on photosensitive drums 7.

(recording medium conveying apparatus):

The following describes carry or the input recording medium (as, OHP thin slice, film or analog) 2 conveying device 3.Conveying device 3 in the illustrated embodiment both can manually have been failed the defeated paper of the also available box of paper.As shown in Figure 1, when manually failing paper, one or more paper recording medium 2 is placed on the sheet feed stacker 3a, starts imaging operation then.Recording medium 2 among the sheet feed stacker 3a is sent into image device by getting paper bowl 3b.When being placed with many recording mediums 2 in the sheet feed stacker, pair of separated roller 3c1,3c2 can separate recording medium and carry one by one, withstand gap between pair of registration rollers 3d1,3d2 until foremost recording medium.Paired alignment roller 3d1,3d2 rotates according to imaging operation recording medium 2 delivered to the imaging station.After the imaging, recording medium 2 is sent to fixing device 5, then delivers to the guide rail 3g of output area 6, leader record medium 2 not only between fixing device and middle conveying roller but also between the outlet roller of intermediate calender rolls and pairing by middle conveying roller 3e and a pair of outlet roller 3f1,3f2.

Sheet feed stacker 3a comprises an inner part 3a1 and an exterior part 3a2.Inner part 3a1 is positioned at the inside of exterior part 3a2 when not working.As shown in Figure 2, the part of exterior part 3a2 constitution equipment framework 15.

Carry for box paper, the bottom in framework 15 have lay carton 3h lay district's (as shown in Figure 1).In the time need not manually failing paper, be positioned at that the recording medium 2 of laying district carton 3h is rotated get paper bowl 3i with send into roller 3j from medium 2 uppermost one take out and deliver to paired alignment roller 3d1,3d2 one by one.In paired alignment roller 3d1, the downstream of 3d2, recording medium is carried in the mode identical with manually defeated paper.Sensor 3k is used for detecting having or not of the interior recording medium 2 of carton 3h.

(transfer device):

As shown in Figure 1, the transfer device 4 that the toner image on the photosensitive drums 7 is transferred on the recording medium 2 comprises transfer roll 4.Particularly recording medium 2 is abutted against with being contained in the last photosensitive drums 7 of handling magazine B of erecting device (hereinafter will illustrate) by transfer roll 4, the voltage that polarity is opposite with toner image on the photosensitive drums 7 is added on the transfer roll 4 (being the DC current by the DC voltage control of about 1000V in an embodiment) and the toner image on the photosensitive drums 7 is transferred on the recording medium 2.

(fixing device):

Fixing device 5 is being fixed on recording medium 2 by the toner image that transfer roll 4 making alives are transferred on the recording medium 2.As shown in Figure 1, fixing device comprises rotation driven roller 5a and near driven roller 5a and include the driven fixing roller 5b of well heater 5c.When the recording medium 2 that is transferred toner image at the imaging station passes between driven roller 5a and the fixing roller 5b, recording medium is subjected to roller 5a, the heat against pressure that produces and fixing roller 5b heating generation between 5b is so the toner image that is transferred is fixed on the recording medium 2.

(magazine erecting device):

Be used to install the inside that the magazine erecting device of handling magazine B is positioned at image device A.Open open/close cap 16 and can install or pull down processing magazine B.Through the top that hinge 16a open/close cap 16 is equipped with framework 15 rotationally.As illustrated in Figures 5 and 6, left rail 17 and right guide rail 18 are attached on the madial wall.Guide rail 17,18 has the first guide rail 17a, the 18a that tilts to the front lower place and is positioned at the second guide rail 17b, the 18a of first guide rail top and is positioned at the second guide rail 17b, the 18b of first guide rail top.Guide rail 17a, 17b and 18a, 18b are symmetrical set.Bearing seat 17c, the 18c (hereinafter explanation) that support the bulging bearing of handling magazine B are respectively formed at the end of the first guide rail 17a, 18a, and intermediate step 17b1,18b1 are respectively formed on the second guide rail 17b, the 18b.

Left rail 17 has a magazine swing stabilizer guide rail 17d who is positioned at second guide rail 17b top.Right guide rail 18 has one to be positioned at the shutter pattern 18d that second guide rail 18b top is used to open and close the bulging shutter 35 of handling magazine B.

Pressure piece 19 is positioned at the top of swing stabilizer guide rail 17d and shutter pattern 18d, and this pressure piece makes the processing magazine B biased downward of loading onto through turning round coil spring 19a.Make the supporter 20 of handling magazine B location be positioned at the front side (along the front side of magazine direction of insertion) of left and right rail 17,18.

After opening open/close cap 16, can the magazine B image device of packing into will be handled by the first and second guide rail 17a of left and right rail 17,18,18a, 17b, 18b guiding.The installation of handling magazine will be illustrated after the magazine structure is handled in explanation.

{ processing magazine }

The following describes each parts of the processing magazine B of the image device of packing into.

Handle magazine 3 and comprise an image carrier and at least one treating apparatus.This treating apparatus can be the charging device to the image carrier surface charging, makes the developable latent image on the image carrier and forms the developing apparatus of toner image, removes cleaning device and the similar device of staying the residual toner on the image carrier.As shown in Figure 3, the processing magazine B of embodiment comprises charging device 8, exposure region 9, the developing apparatus 10 and the cleaning device 11 that develop with toner, they all are provided with around the electro-photographic light-sensitive drum 7 as image carrier, and said apparatus is enclosed in the housing that is made of toner framework 12, developing frame 13 and cleaning framework 14 and of forming on the framework 15 that removably is contained in image device handles magazine B unit.

To introduce photosensitive drums 7 in detail successively below, charging device 8, exposure region 9, developing apparatus 10 and cleaning device 11 etc. are handled the parts of magazine B.

(photosensitive drums):

Photosensitive drums 7 among the embodiment comprises aluminum cylindrical drum substrate 7a and the organic photosensitive layer 7b that overlays on the bulging substrate periphery.As shown in Figure 7, when the driving force that is contained in cleaning framework 14 and image device drive motor 71 (seeing Figure 59) when photosensitive drums 7 passed to and is contained in photosensitive drums 7-vertically the cross helical gear 7c (seeing Fig. 8 A) of end goes up, drum 7 was rotated according to the direction of imaging operation along arrow shown in Figure 1.

Shown in the longitudinal sectional drawing among Fig. 8 A, photosensitive drums-vertically the boss 7b1 of the gear flange 7b of end inserts the bearing 14a of framework 14, with being fixed in metal shaft (being the iron axle among the embodiment) 21 holes of inserting on the resin cross helical gear 7c that is contained in the bulging other end and axle 21 photosensitive drums 7 is contained on the cleaning framework 14 rotationally simultaneously with being contained in.Axle 21 with axis body 21a and flange 21b is through being fixed to framework 14 with screw thread with flange 21b and being installed on the framework 14.The gear flange 7d that comprises spur gear passes to photosensitive drums 7 transfer roll 4 and roller 4 is rotated through the revolving force from image device of cross helical gear 7c acquisition.

Metal shaft 21 is electric-conductors, (making with phosphor bronze among the embodiment) another electric-conductor 22 contacts with the inside surface of aluminum drum substrate 7a at that end of the photosensitive drums that metal shaft 21 is inserted, like this, when inserting photosensitive drums, metal shaft 21 just joins with electric-conductor 22.Make photosensitive drums 7 be grounded to image device through electric-conductor 22 and metal shaft 21 thus, as mentioned below.As shown in Figure 9, electric-conductor 22 is fixed on the boss 7c2 on the flange 7c1 side of cross helical gear 7c, and electric-conductor 22 has a hole or the opening 22a that metal shaft 21 is inserted.Resilient contact element 22b also puts in opening 22a.When inserting opening, metal shaft 21 just also contacts with it against living in contact element 22b.Electric-conductor 22 upper edge left and right directions respectively stretch out a pair of hock 22c.When flange 7c1 inserted photosensitive drums 7, pawl 22c contacted with the inside surface of photosensitive drums 7.

In imaging operation, be added with the surperficial uniform charging of 8 pairs of photosensitive drums 7 of charging roller of alternating current-direct current superimposed voltage during photosensitive drums 7 rotations.At this moment, for making the surperficial uniform charging of photosensitive drums 7, best mode with the combined-voltage stack is given charging roller 8 making alives and is improved the frequency of alternating voltage.But when the alternating voltage frequency surpasses 200Hz, because the vibration of photosensitive drums 7 and charging roller 8 will produce so-called " charging noise ".

When charging roller 8 is applied alternating voltage, can produce electrostatic attraction between photosensitive drums 7 and the charging roller 8, therefore this gravitation make charging roller 8 be attracted to photosensitive drums 7 and the generation elastic deformation at the minimum and maximum value grow of alternating voltage.This electrostatic attraction the intermediate value place of alternating voltage a little less than, this moment, charging roller 8 was by the restoring force of elastic deformation and leave photosensitive drums 7.So photosensitive drums 7 and charging roller 8 are added the frequency of alternating voltage frequency to double and are vibrated.When charging roller 8 was attracted to photosensitive drums 7, roller was hindered with the rotation of drum, so owing to (as producing with finger friction wet glass) stick slip produces vibration; This vibration can produce the charging noise.

According to embodiment, shown in the sectional view of Fig. 8 A and 8B, for reducing the vibration of photosensitive drums 7, the one filling member 7e that is made of rigid body or elastic body is housed at photosensitive drums 7 longitudinal middle parts.The material of filling member 7e can be the metal of for example aluminium, brass or the artificial stone of cement, gypsum for example, or the rubber of natural rubber and analog for example.For the consideration to throughput rate, processibility and weight and cost, the material of filling member should be selected from above-mentioned material.In an embodiment, the heavily about 120g of aluminum filling member 7e.

The shape of filling member 7e or profile can be solid post or open column (as shown in Figure 8, the filling member among the embodiment is a solid post).For example, the external diameter of filling member 7e is than the little 100 μ m of internal diameter of photosensitive drums 7, part 7e is inserted hollow bulging substrate 7a and makes the filling member photosensitive drums of packing into.At this moment, maximal clearance between drum substrate 7a and the filling member 7e is 100 μ m, cementing agent (as, cyanoacrylate class, epoxy resin or analog) be added in the outside surface of filling member or the inside surface of drum substrate 7a can be bonded to filling member 7e on the inside surface of bulging substrate 7a.

As mentioned above, can make photosensitive drums 7 smooth rotation behind the filling member 7e that in photosensitive drums 7, packs into, rotate the vibration that produces because of photosensitive drums when this has just eliminated imaging operation.So, still can suppress the noise that charges even improve the frequency that is added in alternating voltage on the charging roller 8.

(charging device):

Charging device is used for the surface charging to photosensitive drums 7.In an embodiment, used openly said contact-type mise-a-la-masse method among the Jap.P. JP63-149669.As shown in figure 10, charging roller 8 is contained on the cleaning framework 14 rotationally.Charging roller 8 comprises a metal roller shaft 8a, around the elastic conducting layer of metal roller shaft, and around a high impedance elastic layer of conductive layer, and around the diaphragm of high impedance layer.Elastic conducting layer has the EPSM of carbon dust or the elastic rubber layer of NBR system to constitute by disperse, and its effect is that bias voltage is added on the roll shaft 8a.The high impedance elastic layer has the chemglaze of a small amount of fine conductive powder (as carbon dust) to constitute by disperse, even its effect is to have high conductivity, for example, when having a pin hole and photosensitive drums 7 relative, the leakage current of photosensitive drums 7 is prevented the rapid decline of bias voltage by restriction when charging roller.Diaphragm is made of N-methyl methoxy Geordie dragon, and its effect is to prevent that when the plastic material of conductive elastic layer and/or high impedance elastic layer contacts with photographic layer photosensitive drums 7 surfaces are worn.

Roll shaft 8a can be contained on the framework 14 towards photosensitive drums 7 slidably through bearing 23,24, and photosensitive drums 7 makes charging roller 8 contact with photosensitive drums 7 thereby spring 25 makes the bearing deflection.

In imaging operation, the rotation of photosensitive drums 7 drives charging roller 8 rotations, as mentioned above the combined-voltage that superposes is added on the charging roller 8 simultaneously, and photosensitive drums 7 surfaces are just by uniform charging like this.The end in contact of rubber-like Metal Contact part 26 and metal roller shaft 8a can be added on the charging roller 8 voltage from image device.

The adjustment part 14b that prevents contact element 26 distortion is formed on the cleaning framework 14, even there is the power in left side among the sensing Figure 10 that produces because of the whereabouts of handling magazine B or analog to be added on the roll shaft 8a like this, because adjustment part 14b has withstood contact element 26, so part 26 can not produce elastic deformation.Because the axially-movable (pointing to the left side of Figure 10) of limited part 14b restriction charging roller 8 is so charging roller 8 always remains on the photosensitive drums 7.

Work in the location of 24 pairs of charging roller 8 other ends of bearing.As shown in figure 10, bearing 24 has a hook-type pawl 24a who is connected as a single entity with it.The other end of the roll shaft 8a of charging roller 8 withstand pawl 24a then charging roller 8 axially-movable of (Figure 10) to the right be limited.Bearing 24 is made by the polyacetal resin with good resistance to abrasion (POM), makes the relative metal roller shaft 9a of bearing have good sliding.

As mentioned above, thus the two ends of roll shaft 8a lean antifriction bearing 24 and contact element 26 respectively makes roll shaft keep not contacting with framework 14 with the axially-movable of restriction charging roller 8.If make the end of roll shaft 8a directly lean the axially-movable that framework 14 limits charging roller 8, then framework 14 must have for example polyphenylene oxide resin (PPO) making of material of good resistance to abrasion with relative metal roller shaft 8a.Otherwise as shown in the Examples, if roll shaft 8a does not directly contact the resistance to abrasion that just needn't strengthen framework 14 with framework 14.Therefore, the material of framework 14 is not with PPO but used more cheap polystyrene resin (PS), so that reduce the manufacturing cost of handling magazine B in an embodiment.

The material of bearing 24 is not limited only to poly-place urea formaldehyde, also other material that has high-wearing feature as nylon and relative metal roller shaft 8a.

According to embodiment, impose on charging roller 8 so that the voltage that photosensitive drums 7 is charged has the DC component VDC1 of AC compounent Vpp peace treaty-670V of about 1800V, and can realize constant current control.

(exposure region):

The effect of exposure region 9 is to use the video light from optical system 1 that photosensitive drums is exposed so that form electrostatic latent image on the photosensitive drums 7 by charging roller 8 uniform charging.As shown in Figure 4, exposure region is made of the opening 9 of an end face that is formed on 14 of developing frame 13 and cleaning frameworks, and video light can pass this opening.That is to say, constitute exposure region 9 by rectangular notch 9a on the developing frame 13 end face 13r and the roof 14n that covers the cleaning framework 14 of a notch 9a part.

(developing apparatus):

Developing apparatus makes the electrostatic latent image that had before formed on photosensitive drums by exposure become visible toner image with toner.Although image device A both can use magnetic color tuner also can use nonmagnetic toner, what the processing magazine B in the image device of packing in the illustrated embodiment was contained is a kind of magnetic color tuner of single component magnetic developer.

The magnetic color tuner of using in the development operation is made binding resin with polystyrene resin, but the most handy styrene acrylic resin.The colouring material that can add magnetic color tuner can be the carbon black of using always, copper phthalocyanine, iron oxide black or similar material.

The contained magnetic fine grained of magnetic color tuner is by making by magnetized material in magnetic field, and these materials can be ferromagnetic metal powders, as iron, cobalt, nickel, or alloy or compound such as magnetic iron ore or ferrite.

As shown in Figure 3, the developing apparatus 10 that uses toner to form toner image has toner storer 10a and toner conveying member 10b that toner is sent that is positioned at the toner storer of a storage toner, and this conveying member rotates along direction shown in the arrow.Send toner and rotate the developing cylinder 10d that includes a magnet 10c and can on developing cylinder, form toner thin layer.When this toner layer forms on developing cylinder 10d, because the friction between toner and the developing cylinder 10d just can obtain being enough to make the triboelectric charging electric charge of the electrostatic latent image development on the photosensitive drums 7.The development scraping blade of regulating toner layer thickness is leaning the surface of developing cylinder 10d.

In an embodiment, the development bias voltage that applies is the DC component VDC2 of AC compounent Vpp peace treaty-500V of about 1600V.The DC component VDC2 of this development bias voltage and and the straight component VDC1 of aforesaid charging bias voltage between relation in, becoming as numerical value (VDC1-VDC2) will cause the defect of image blurring greater than-50V (becoming big to pros).

Toner storer 10a and toner conveying member 10b are formed on the toner framework 12, and developing cylinder 10d and developing blade 10e are installed on the developing frame 13.Vertical contact site of framework 12,13 welds each other with ultrasonic soldering, thereby these frameworks are connected as a single entity.

When having the developing cylinder 10d of toner layer and photosensitive drums 7 location, a little gap (about 250 μ m) is arranged each other.For this reason, in an embodiment the overall diameter of (as shown in figure 11) each contact ring 10f all with the corresponding value in above-mentioned gap greater than the overall diameter of developing cylinder 10d and be installed near the toner developing cylinder 10d diaxon end and form zone outside distinguishing.On contact ring and the photosensitive drums 7 latent image form outside the district part against.

One (spiral) gear 10g is contained in the axle head of developing cylinder 10d, and gear 10g can rotate with developing cylinder 10d like this.When developing frame 13 was connected to cleaning framework 14, the cross helical gear 7c engagement of gear 10g and photosensitive drums 7 was rotated so the rotation of photosensitive drums 7 drives developing cylinder 10d.In addition, a gear 10g and a gear (not shown) engagement that is connected toner conveying member 10b can be passed to toner conveying member 10b to the revolving force of photosensitive drums 7.

In imaging operation, rotation with toner conveying member 10b of said structure is delivered to developing cylinder 10d with the toner among the storer 10a, and on developing cylinder, form toner layer with constant thickness by developing blade 10e, be transferred on the electrostatic latent image that is formed on the photosensitive drums 7 at the toner on the developing cylinder afterwards.Only apply toner and can on developing cylinder 10d, form toner layer to the carbon coating area of developing cylinder 10d, along the photographic layer district on vertical (axle) directions of photosensitive drums 7, (b) charging zone that produces of charging roller 8 should be chosen as (a)＞(b)＞(c) with (c) relation between the formation of the toner on the developing cylinder 10d is distinguished for (a).

Toner among the storer 10a must be avoided from leaking between developing cylinder 10d and the developing frame 13.For this reason, as shown in figure 11, in an embodiment, be positioned at developing frame 13 and allow toner to pass and two longitudinal ends that are sent to the opening 13a of developing cylinder 10d are provided with toner leakage preventing resilient seal 10h, the bottom of the opening 13a that contacts in the total length with developing cylinder 10d is provided with the elasticity sheet 10i that expands.

Each toner leakage preventing sealing 10h all equates with the thickness of step on position and the developing frame 13 lower limb 13o, and like this, when toner leakage preventing sealed 10h and adheres on the developing frame 13, the upper surface that seals 10h was the same with lower limb 13o flat.Bloated sheet 10i is adhered to the upper surface of lower limb 13o with the double sticky tape (not shown).Expand (vertically) length of sheet 10i greater than opening 13a longitudinal length, the sheet that expands two vertically end is overlapping with toner leakage preventing sealing 10h, expand sheet a free margins of Width with suitable against power along the circumferential surface of its length roof pressure at developing cylinder 10d.

The overlapping relation that expands between sheet and toner leakage preventing sealing will be described in detail in detail below.As shown in figure 12, because the thick approximately 13mm of developing blade 10c, two vertical ends of developing blade 10e can not to seal 10h overlapping with toner leakage preventing, this make developing blade end and each toner seal between generation one little gap 10k.And toner leakage preventing sealing 10h and bloated sheet 10i are overlapping in the axial area of gap 10k outside.

Therefore, when developing cylinder 10d go up to form toner layer, toner tm passed gap 10k and is bonded on the developing cylinder 10d with the shape of projection.Owing to be provided with toner agent leakproof seal 10h in the toner tm district of rotation, toner tm is inhaled into toner storer 10a by the sheet 10i that expands, thereby has avoided toner to spill from magazine.

Figure 13 A is the sectional view along A-A line among Figure 11, the sectional view of B-B line among Figure 13 B Figure 11.As shown in FIG. 13A, toner leakage preventing sealing 10h does not closely contact in the overlay region agley with bloated sheet 10i, and parallel to each other.Shown in Figure 14 A and 14B, if crooked bloated sheet 10i does not closely contact with the toner leakage preventing sealing, toner just may be from the clearance leakage between sealing and bloated sheet.Yet, because the sheet 10i that expands in an embodiment is not crooked and closely contact with toner sealing 10h, therefore the danger that toner spills can not take place.

In an embodiment, the upper surface of toner leakage preventing sealing 10h defines the expand free margins of sheet 10i and the contact angle between the developing cylinder 10d circumferential surface, and there is not accuracy error in the upper surface of toner leakage preventing sealing.Sheet 10i keeps straight owing in use expand, and the contact angle of the sheet 10i that expands remains unchanged for a long time, and therefore, the toner that is stored among the toner storer 10a is difficult to spill between sheet 10i and the developing cylinder 10d from expanding.

Another of leaking for toner may be that toner spills between developing blade 10e and developing frame 13.For avoiding this defective, shown in Fig. 3 and 14, three longitudinal rib 13b, 13c, 13d are formed on the part that developing frame 13 and developing blade 10e lean in an embodiment, such first and second rib 13b, 13c withstand developing blade 10e, are scraper plate fabricated section 10j and second rib 13d leans the sheet metal that is used to install developing blade 10e.The free margins of second rib 13c that leans developing blade 10e is by sharpening, and when first rib 13b leans developing blade 10e and the 3rd rib 13d when leaning scraper plate fabricated section 10j, second rib 13c is just inserted the developing blade that thick 1.3mm is made by rubber by the limit of sharpening.

The sharp edge of second rib 13c is bent, and the center section on this limit slightly protrudes from the two ends on this limit in the vertical.When being installed to developing blade 10e on the developing frame 13, fix with screw thread because of the part near the scraper plate fabricated section 10j on two vertical limits, the vertical center section that is installed in the developing blade on the scraper plate fabricated section may produce skew.But, according to said structure, both made the skew of scraper plate center section, because the limit of second rib 13c is bent to the shape that center section protrudes from two ends (in can the processing magazine of usefulness A4 size paper recording picture, this protrusion amount is preferably 0.1-0.5mm), so rib 13c can guarantee its whole vertical limit insertion developing blade 10e.Correspondingly, there is not the gap between developing frame 13 and the scraper plate 10e, thereby avoids toner between scraper plate and developing frame, to leak.

Produce the gap between because of second rib 13c and developing blade 10e and cause toner when spilling therebetween, the 3rd rib 13d that leans scraper plate fabricated section 10j can prevent the leakage of toner.Because second rib 13c and relative the 3rd rib 13d in contact region between the developing blade 10e and the contact region between the scraper plate fabricated section 10j are offset (being misalignment) with the amount of suitable developing blade 10e thickness, so toner is difficult to spill magazine from two contact regions that reach between the 3rd rib 13d and the scraper plate fabricated section 10j between second rib 13c and the developing blade 10e.

In the developing apparatus shown in the embodiment 10, have one to be used for detecting the toner surplus testing agency that toner storer 10a remains toner.Shown in Figure 11 and 15, this mechanism comprises the metal discharge silk 27 of a bonding pad the passage from toner storer 10a to developing cylinder 10d and toner framework 12 and developing frame 13.Voltage is added between the discharge silk 27 and the developing cylinder 10d as second electrode as first electrode.At this moment, if there is the then interelectrode static capacity of toner to increase between the electrode, otherwise, if the then interelectrode static capacity of no toner reduces.So the variation that detects static capacity by control section 60 (seeing Figure 59) can detect the toner surplus.Can measure the state of " no toner " with the electric signal of representing static capacity and predetermined reference point comparison.When control section 60 was measured " no toner " state, one was used to point out just luminous need the replacing with prompting operation person of the lamp of changing the processing magazine to handle magazine B.Hereinafter also explanation is used to detect the physical circuit of toner surplus.

For the bonding pad between toner framework 12 and the developing frame 13, because vertically welding on the bonding pad, so toner can not spill from vertical bonding pad.But, as shown in figure 11, because for the toner that prevents to handle toner storer 10a among the magazine B leaks, epiphragma 28 covers the opening 12e that is positioned on the toner framework 12 hermetically, and a free end of epiphragma 28 by (between the framework 12,13) laterally the bonding pad to exposing outside so that this free end that the operator can hold epiphragma 28 when the work is opened a mouthful 12e, therefore, laterally the bonding pad can not be welded.So, leak from the horizontal bonding pad of 13 of toner framework 12 and developing frames for preventing toner, toner leakage preventing sealing 29 is housed in this horizontal bonding pad.

As mentioned above, because apply voltage will for discharge silk or line 27,, and one contact 27a is arranged at the external part of discharge silk so an end of discharge silk 27 must be protruding by the bonding pad of 12,13 of frameworks.For this reason, it is protruding that discharge silk 27 must pass the horizontal bonding pad (between toner framework 12 and developing frame 13) that is bonded with toner leakage preventing sealing 29.As shown in figure 16, for discharge silk 27 is installed with aforesaid way, the cementing agent 30 of for example silicone is coated on the groove 13e surface on developing frame 13 bonding pads, then the discharge silk being inserted groove can adhere to discharge silk 27 on the developing frame 13.As shown in figure 16, when discharge silk 27 injected groove 13e, the cementing agent 30 that is coated in groove 13e surface protruded from groove and expands.If cementing agent 30 solidifies under swelling state, both made toner leakage preventing sealing 29 adhere to that sealing 29 still can not closely contact with developing frame 13 fully on the framework 13, so normal generation one gap 31.Though this gap 31 is very little,,, toner spills so still may passing gap 31 because toner contains very thin particle.

In order to eliminate this defective, in Figure 17 A illustrated embodiment.After 27 reeves of discharge silk are had the groove 13e of cementing agent 30, use rod member or analog shown in Figure 17 B on discharge silk 27 and along this discharge silk (promptly intactly covering the silk 27 that discharges), the cementing agent of expansion from groove 13e to be flattened.Like this, shown in Figure 17 C, when toner leakage preventing sealing 29 adhered on the framework 13, sealing 29 can be without any closely contacting with (being connected) surface of developing frame 13 with gap, thereby fully avoid toner to leak.Shown in Figure 17 B, on the expansion cementing agent 30 of leveling, can add new cementing agent and entirely cover discharge silk 27.

The contact 27a of discharge silk 27 is to exposing outside.So the exposed portions serve mistake of the silk 27 that will discharge probably during the operator installs and removes processing magazine B is hit on object.Shown in Figure 18 A, because the toner leakage preventing of thick about 4mm sealing 29 is to be made and had elasticity by the foaming urethane, so when the exposed portions serve of discharge threads 27 is answered back to something, discharge and threads 27 float from developing frame 13 probably.Simultaneously, between framework 13 and discharge silk 27, can a little gap 32 occur and cause that toner leaks.For avoiding this deficiency, shown in the embodiment of Figure 18 B, a bend 27b who points to the L type of toner framework 12 from developing frame 13 is arranged on the discharge silk 27 in the bonding pad between toner framework 12 and developing frame 13.At bend 27b place, because about 1mm has upwards been compressed in the thick sealing 29 of 4mm, so do not produce elastic deformation.Correspondingly, bump the exposed division component that acts on discharge silk 27 as above-mentioned hitting, discharge silk 27 can not float from the groove 13e of developing frame 13.Simultaneously, because of the gap shown in Figure 18 A not occurring, the danger that toner leaks also can be avoided.

(toner leakage preventing sealing):

The following describes toner leakage preventing sealing 29.Toner leakage preventing sealing 29 is bonded at two longitudinal ends of the opening 12e of toner framework 12 with double sticky tape.As shown in figure 11, be stained with thick about 0.01-1mm, a width on the upper surface of toner leakage preventing sealing 29 that the operator extracts epiphragma 23 1 sides out and be narrower than and seal 29 the anti-sheet 29a that tears being positioned at.

Anti-reason of tearing sheet 29a be installed be since in use the operator must extract epiphragma 28 out so that open the opening 12e that handles magazine B with hand.In this case, if the operator along film extract out direction (corresponding to opening 12e vertically) pull epiphragma 28 then problem can not take place.Yet, as shown in figure 19, when the direction of extracting direction tilt alpha angle with relative film out is extracted epiphragma out, as shown in figure 20, because of in a direction (among Figure 20, direction upwards) goes up and draw narrowed width or the wrinkle that diaphragm makes epiphragma 28 in, will the rub toner leakage preventing sealing 29 and often tear (shaded area) part of sealing 29 of the wrinkle part of diaphragm.If toner leakage preventing sealing 29 is torn or tear fracture, toner will spill from splitting and the operator's that makes dirty hand or fall into the image device recording medium out of the press of making dirty.

As shown in the Examples, when by being bonded at anti-in the toner leakage preventing sealing 29 when tearing sheet 29a and pulling out epiphragma 28, if produce wrinkle when pulling out, because the anti-sheet 29a protection sealing 29 of tearing is arranged, sealing 29 can not be torn.Therefore, no matter what direction to pull out epiphragma 28 and can not cause that all toner leaks along.

The side of opening 12e install along the width of sealing 29 anti-tear sheet 29a after, when epiphragma 28 is drawn out, anti-ly tears the toner that sheet 29a can will be bonded on the epiphragma 28 and wipe the possibility that this film 28 that is drawn out with regard to the hand of having removed the operator is made dirty off.

When toner framework 12 and developing frame 13 are welded together each other, because toner leakage preventing sealing 29 and anti-ly tear that sheet 29a is clipped in therebetween securely and vertically hold (top and bottom among Figure 14) fixing by two on the framework 12,13, thus sheet 29a can with sealing 29 disengagements.The anti-material that tears the most handy anti-epiphragma 28 frictions well of sheet 29a is made, for example, and tygon terephthalate or high density polyethylene.

As shown in figure 21, when width tore sheet 29a and adheres in the sealing 29 less than toner leakage preventing sealing 29 anti-, the bonding location of sheet 29a is extracted direction out along film, and to leave the distance of the limit 29b of toner leakage preventing sealing 29 be U.Like this, when epiphragma 28 was drawn out of, limit 29b can more effectively wipe the toner that is bonded on the film 28 off.When this distance is 5mm or more hour, in the process of extracting epiphragma 28 out, can not degenerate for the anti-effect of tearing of toner leakage preventing sealing 29.

As mentioned above, the anti-width that tears sheet 29a can be not less than the width of toner leakage preventing sealing 29, and this print just can adhere on the whole surface of sealing 29.

(sizes of photosensitive drums and other each parts):

Various sizes and the relation of the position between these parts below in conjunction with photosensitive drums 7, charging roller 8 and developing cylinder 10d among accompanying drawing 22 and the 23 explanation embodiment.But the present invention is not limited to these examples, and other suitable size and positioning relation also can adopt.

(1) number of teeth 32 of cross helical gear 7c;

(2) the about 31.85mm of the diameter of cross helical gear 7c (D1);

(3) the about 9.8mm of the width of cross helical gear 7c (W1);

(4) number of teeth 43 of gear flange 7d;

(5) the about 32mm of the diameter of gear flange 7d (D2);

(6) the about 5.6mm of the width of gear flange 7d (W2);

(7) the about 254mm of the length of photosensitive drums 7 (L1):

(8) photoreceptor on the photosensitive drums 7

The about 250mm of the length of coating area (L2);

(9) the about 30mm of the diameter of photosensitive drums 7 (D3); (10) metal shaft 21 of photosensitive drums 7

The about 10mm of diameter (D4); (11) the about 246mm of the length of developing cylinder 10d (L3); (12) developing cylinder 10d goes up the carbon coating area

The about 216mm of length (L4); (13) the about 16mm of the diameter of developing cylinder 10d (D5); (14) the about 16.5mm of the external diameter of contact ring 10f (D6); (15) the about 12mm of the length of contact ring 10f (L5); (16) the about 9mm of the length of contact ring 10f (L6); (17) the bulging contact site of contact ring 10f

The about 16.7mm of external diameter (D7); (18) the bulging contact site of contact ring 10f

The about 0.3mm of thickness (E1); (19) the bulging contact site of contact ring 10f

The about 4mm of width (W3); (20) number of teeth 17 of developing gear 10g; (21) the about 18.1mm of the diameter of developing gear 10g (D8); (22) the about 8.3mm of the width of developing gear 10g (W4); (23) charging bias voltage contact 49

The about 7mm of length (L7); (24) charging bias voltage contact 49

The about 7.8mm of width (W5); (25) charging bias voltage contact 48

The about 6mm of length (L8);

(26) charging bias voltage contact 48

The about 9.4mm of width (W6);

(27) contact of discharge silk 27

The about 2mm of the diameter of 27a (D9):

(28) contact of discharge silk 27

The about 15.5mm of the width of 27a (W7);

(29) the about 251mm of the length of charging roller 8 (L8);

(30) charging roller 8 live parts

The about 225mm of the length of (rubber part) (L9);

(31) the about 12mm of the diameter of charging roller 8 (D10);

(32) the about 12mm of the length of roll shaft 8a (L10);

(33) the about 6mm of the diameter of roll shaft 8a (D11);

Gear 7c here and developing gear 10g are so-called cross helical gears.When gear 7c was driven from the power of image device, the photosensitive drums 7 that is fitted together with gear 7c was added in the thrust on the gear 7c.So photosensitive drums 7 is offset and leans on cleaning framework 14 by this thrust along this thrust direction, like this, photosensitive drums is promptly along this thrust direction location.

(cleaning device):

After the image conversion on the photosensitive drums 7 is to the recording medium 2, the toner that cleaning device 11 will be stayed on the photosensitive drums 7 is removed at transfer device 4.As shown in Figure 3, cleaning device 11 comprises that one contacts and strike off the cleaning balde 11a that stays toner on the drum 7 with photosensitive drums 7 surface, one is positioned at scraper plate 11a bottom and photosensitive drums 7 surfaces and contacts and be used to block the used toner storer 11c that soaks the used toner that sheet 11b and collection be blocked that is struck off toner.Allow the used toner on the photosensitive drums 7 to slip over the sheet 11b that soaks that photosensitive drums 7 surfaces slightly contact, and will guide the direction (that is, guiding used toner storer 11c into) of leaving photosensitive drums 7 surfaces into by the toner that scraper plate 11a removes.

10e is similar to developing blade, and cleaning balde 11a is made by rubber and analog and adhered on the scraper plate fabricated section 11b with double sticky tape.This scraper plate fabricated section is fixed on screw on the cleaning framework 14.To soak sheet 11b with double sticky tape and adhere to soaking on sheet bonding surface (edge part) 11c1 of used toner storer 11c.

Must prevent that used toner among the used toner storer 11c is from the two vertically leakages between end and the relative cleaning framework 14 of cleaning balde 11a.For this reason, be in the two longitudinal ends bonding toner leakage preventing sealing of scraper plate 11a.But, toner just may spill from the seam between sealing and scraper plate if the toner leakage preventing sealing can not fully closely contact then with cleaning balde 11a.Equally, if the toner leakage preventing sealing can not closely contact with the sheet adhesive surface 11c1 that soaks of used toner storer 11c, then toner can spill from the seam between sealing and this adhesive surface.

For avoiding this deficiency, as shown in figure 24, in an embodiment, toner leakage preventing sealing 11e is arranged on two of cleaning balde 11a and vertically holds.Hereinafter will describe the part that sealing 11e is set in detail.Shown in Figure 24 and 25, sealing 11e is adhered to the both ends of used toner storer 11c, and two longitudinal ends of cleaning balde 11a are bonding with sealing 11e simultaneously.Dividing plate 11c3 is positioned at the upper surface 11c2 of used toner storer 11c and contacts with corresponding sealing 11e.

The following describes the installation method of toner leakage preventing sealing 11e.Earlier cleaning balde 11a is installed on the cleaning framework 14, then as shown in figure 26, sealing 11e is installed with the limit S2 of sealing and the tight mode that contacts of two vertical limit S1 of cleaning balde 11a.In this assembling, if the width W 1 of sealing 11e, then seals the low limit T1 of 11e greater than the distance L 0 of soaking between sheet bonding surface 11c1 and cleaning balde 11a and soaks between sheet bonding surface 1,1c1 one gap can appear.Thereby cause toner to leak.For avoiding this point, in an embodiment, should make distance L 0 greater than width L1 (gap of L0＞L1), X when giving compression of sealing 11e simultaneously.In this case, sealing 11e must be adhered to the dash area T2 that leans at this adhesive surface of low limit T1 that soaks sheet adhesive surface 11c1 and sealing 11e; As shown in the Examples, owing to be provided with dividing plate 11c3, used toner can not leak when the slip of sheet adhesive surface is soaked on the edge.So the decrement X that just can make sealing 11e in the gap is zero substantially.

(framework):

The following describes and constitute the framework of handling magazine B housing.As shown in Figure 7, the housing of handling magazine B is by toner framework 12, and developing frame 13 and cleaning framework 14 constitute.Toner framework 12 and developing frame 13 weld each other to one and form toner development framework C.Described again mode below the toner development framework C is connected to cleaning framework 14 and forms the housing of handling magazine B.Have drawn from polystyrene resin and of framework 12,13,14 among the embodiment by injection moulding.When the charge characteristic of the charge characteristic of framework 12,13,14 material therefors and toner component is close, had both made then that toner and framework friction can not produce unusual electric charge because of friction produces electricity during imaging yet, thereby prevented that image quality from degenerating.

At (article " surface aggregate thing and static " shown in the example of the following table 1 of this one side, " surface film MOLECULE DESIGN " 5 volumes, Japan surface association publishes, Yuji Mutata work), because framework all is identical styrene families with material polystyrene and toner component styrene-acrylonitrile copolymer and has similar charge characteristic, both made the friction of toner and framework also can not produce unusual electric charge.The implication of " styrene family " promptly is to contain 60% or more styrene in stock.

Table 1 (charging system) (anode) contains the silicone elastomer of silica-filled thing

|

| the Pyrex of the flexible sponge polished surface of cotton polyurethane elastomer styrene acrylonitrile copolymer (adhesive material of toner among the embodiment) styrene-butadiene-copolymer polystyrene (material of embodiment middle frame) polyisobutylene polycarbamate of cellulose sponge braiding

|

| teflon (negative terminal)

As shown in Figure 7, toner storer 12a and toner conveying member 10b are arranged in toner framework 12.Shown in Fig. 3 and 4, the one group of longitudinal rib 12d that is formed on toner framework 12 outside surfaces constitutes a grip part.The width that is formed on the rib 12d on toner framework 12 outside surfaces gradually changes and has constituted complete R shape structure.When magazine B is handled in dismounting on image device A, because of operator's not slippage of grip part of grasping toner framework 12 easily, so improved the operability of magazine B dismounting.

As shown in Figure 7, developing cylinder 10d and developing blade 10e are positioned on the developing frame 13.As shown in figure 11, use screw when developing blade 10e is installed and fix before this fabricated section, should make the relative developing frame of scraper plate fabricated section 10j 13 location.For this reason, on the scraper plate fabricated section 13f of developing frame 13, be provided with vertical boss 13g, on scraper plate fabricated section 10j, be provided with the hole simultaneously, can make the relative framework of fabricated section 13 location like this in order to insert positioning boss 13g.Shown in Fig. 7 and 11, with so that framework 13 connects the positioning boss 13i (as shown in figure 11, these positioning boss are positioned at two vertical ends of developing frame 13) of toner frameworks 12 vertically stretches out from the joint face 13h of developing frame 13.Boss 13i is inserted the pilot hole 12c be positioned on the toner framework 12 can make the junction of 12 of developing frame 13 and toner frameworks locate.

In an embodiment, as shown in figure 27, should make the joint face 13h of scraper plate installed surface 13f and developing frame 13 parallel to each other.Like this, when making developing frame 13 with injection moulding, because the boss 13g of location scraper plate and the boss 13i of location toner framework are parallel to each other, and therefore behind forming operation, have only along left and right direction mould 33 separated from one another and promptly like a cork in type framework are taken out from mould.

As shown in Figure 7, the cleaning balde 11a of photosensitive drums 7, charging roller 8, cleaning device 11, soak sheet 11b and used toner storer 11c and all be positioned on the cleaning framework 14.When as the installation of above-mentioned developing blade 10e cleaning balde 11a being installed to cleaning frame when returning on 14, two longitudinal ends that are bonded with the scraper plate fabricated section 11d of cleaning balde are fixed on the framework 14 by screw.But, before fixed screw, scraper plate fabricated section 11d needs relative framework 14 location.For this reason, as shown in figure 28, on the scraper plate installed surface 14c of framework 14, be provided with vertical positioning boss 14d, and on scraper plate fabricated section 11d, be provided with the hole (not shown) that can insert boss 14d, so just can make this fabricated section clean the framework location relatively.In this cooperation, scraper plate installed surface 14c is designed to the stripping direction (sensing of arrow among Figure 28) perpendicular to mould 34.Like this and since the positioning boss 14d on the scraper plate installed surface 14c to stretch out direction parallel with the stripping direction of mould 34, so can simplify the design of mould 34.

Bulging shutter 35 shown in Figure 3 is contained on the cleaning framework 14 rotationally.Drum shutter 35 is used to open and close an opening, faces transfer roll 4 by this opening photosensitive drums 7.As mentioned below, install to image device A when going up when handling magazine B, the drum shutter is opened automatically, and pulls down when handling magazine B from image device A, and the drum shutter is closed automatically.

(the toner frame return and developing frame between welding):

Now explanation toner frame returns 12 and the welding of development frame between returning.Framework 12,13 connection each other is by the ultra-sonic welded seam.In other words, as shown in figure 29, cover the opening 12e of toner framework 12 at epiphragma 28 after, pack into the recess 75a of receiver member 75 of toner framework 12, will be that the separable epiphragma of one is extracted handle 12f out and is bent downwardly with framework 12 structures then.Afterwards, developing frame 13 and toner framework 12 is overlapping, and with compressing member 76 from top pressure developing frame 13.Under this situation, in the time of on ultrasound wave being added in toner framework 12 and developing frame 13, the rib 13S (see figure 7) that is positioned on the joint face of toner framework 12 is soldered, thereby framework 12,13 is interconnected.

When ultrasound wave was added on the framework, (among Figure 29 shown in the arrow J) is normal on the Width of framework produced distortion.But, in an embodiment, as shown in figure 11, because developing frame 13 is provided with longitudinal rib 13t and the scraper plate fabricated section 10j that is equipped with on the developing frame is made by sheet metal, therefore, developing frame has enough intensity resistances to deformation.In addition, owing to do not have stiffening rib on the toner framework 12, so the intensity of toner framework is low and often yielding.But in an embodiment, shown in Fig. 7 and 11, chimb 12g is formed on the two long limits (upper and lower side of right opening 12e length direction) of toner framework 12.Distance between the chimb 12g equals the length L 13 of the joint face Width of developing frame 13 substantially, so the joint face 13h of developing frame 13 can be located between the chimb 12g.

Like this, when with ultrasonic soldering framework 12,13 being connected as a single entity, the joint face 13h of developing frame 13 is contained between the chimb of toner framework 12, and the positioning boss 13i of developing frame 13 packs among the pilot hole 12c of toner framework 12.So the vibration that produces because of ultrasonic soldering is difficult to make the toner frame deformation, thereby has avoided the skew between the framework 12,13.In other words, because the joint face 13h of developing frame is contained between the chimb 12g on the framework 12 along the upper and lower limit of toner framework 12, make the motion of toner framework 12 be subjected to developing frame 13 restrictions, therefore, the Width that had both made upper and lower vibration be added to toner framework 12 can not cause the skew of 12,13 of toner frame deformation and frameworks yet.

In an embodiment, because all frameworks are made (polystyrene resin) by same material, so framework 12,13 weldering during for one, welding between the framework 12,13 and strength of joint can obviously strengthen.Owing to developing frame 13 is not welded on the cleaning framework 14, so consider just needn't use and toner framework 12 and developing frame 13 identical materials making cleaning framework 14 from the angle that improves welding and strength of joint.

In an embodiment, the positioning boss 13i that only is positioned at the developing frame 13 on long limit of developing frame as mentioned above also can be set on two long limits of developing frame 13.Be provided with like this, when welding operation, can more effectively prevent the distortion of toner agent framework 12 and developing frame 13 and the skew between the framework 12,13.

As shown in figure 31, when when (being used to insert this positioning boss), can more effectively preventing the skew between frame deformation and the framework along the pilot hole 12c of the positioning boss (not shown) that vertically is arranged side by side a plurality of developing frames of framework and toner framework 12.When being provided with like this, can dispense above-mentioned two chimb 12g that are positioned on toner framework 12 Widths.

(being convenient to handle the magazine assembled construction):

When magazine B is handled in assembling, toner conveying member 10b is contained on the toner framework 12, cover the opening 12e of the toner storer 10a that fills toner with epiphragma 28, and discharge threads 27 is loaded onto.Then, developing frame 13 is welded on the toner framework.Then, developing cylinder 10d and like are packed into developing frame 13.Subsequently, the toner development framework C of the assembly that contains developing frame 13 and toner framework 12 is placed on the erecting frame securely, and with each parts framework C (referring to Figure 33) that packs into.In an embodiment, shown in Figure 32 A, at the certain position of toner framework 12 a pilot hole 12a is arranged, the end 12b of framework 12 makes the plane.Fabricated section 36a on the erecting frame 36 is inserted pilot hole 12a can be fixing with toner framework 12, so just made things convenient for the assembling such as developing cylinder 10d, developing blade 10e and like, thereby improved the operability of assembling.

The situation that cleaning balde 11a and like are assembled on the cleaning framework 14 is similar to above-mentioned situation.In an embodiment, shown in Figure 32 B, the plane is made in the bottom of cleaning framework 14, on the bottom of cleaning framework a pilot hole 14e is arranged.In the time of on scraper plate 11a and like being installed to cleaning framework 14, can cleaning framework 14 is fixing like a cork as long as the mounting boss 37a on the erecting frame 37 is inserted pilot hole 14e, so just made things convenient for assembling, thereby improved the operability of assembling such as cleaning balde 11a and like.

Automatically assemble below in conjunction with description of drawings.

As shown in figure 33, at first for the assembling of toner, developer framework C relative to the assembly fixture 36 that moves along direction shown in the arrow toward conveying roller 36b, step 1. the boss 36a of assembly fixture 36 insert the pilot hole 12a of toner framework 12, in step 2. developing blade is installed, in step 3. with the fixing developing blade 10e of screw.4. step assembles developing cylinder 10d, step 5., fixing developing cylinder, 6. step is taken off toner development framework C and framework C is sent into next procedure.After taking off toner development framework C, assembly fixture 36 past following boost lines are returned and are restarted step 1..

As mentioned above, on toner framework 12, be provided with (erecting frame 36 of packing into) thus assembled portion just can be omitted the assembling of the clamping step simplification toner framework 12 of clamping toner framework 12.

The following describes cleaning framework 14 relative to the assembly fixture that moves through conveying roller 37b along the arrow direction.As shown in figure 34, step 1., the boss 37a of assembly fixture 37 inserts the pilot hole 14e of cleaning framework 14, step 2., bonding soaking levied 11b, step 3., cleaning balde 11a is installed, step 4., with the fixing cleaning balde 11a of screw, step is 5., photosensitive drums 7 is installed, step 6., 7. fixing photosensitive drums, step are taken off the cleaning framework 14 that assembles and framework 14 are sent into next procedure.After taking off cleaning framework 14, erecting frame 37 returns and restarts step 1. through following boost line.

C is similar to the toner development framework, (erecting frame 37 of packing into) assembled portion is set on cleaning framework 14 cleans the clamping step of framework 14 and simplify the assembling of cleaning framework 14 with regard to omitting clamping.As shown in Figure 4, cleaning framework 14 is provided with locked groove 14o.When assembling automatically, assembly machine is clamped this locked groove can make the cleaning framework move between each station.

Also can carry out the assembling of toner framework 12 and cleaning framework 14 with the device outside the automatic assembling machine.For example,, can increase work efficiency greatly at simple this framework of assembly line hand assembled with simple tools as if 36,37 of erecting frames of use.

After each parts is loaded into the toner development framework C and cleaning framework 14 that is made of toner framework 12 and developing frame 13 assembly integral body, toner development framework C is connected on the cleaning framework 14.During connection, framework often is placed on the stand., be contained in photosensitive drums 7 on the cleaning framework 14 and the developing cylinder 10d that is contained on the developing frame 13 and all outwards exposing to the open air before framework 14 is connected with cleaning at toner development framework C.Therefore, these parts can be collided and damaged with stand very much.Especially photosensitive drums 7 this in imaging operation, be used for the most important parts of imaging, all can make the imaging distortion or degenerate and reduce image quality even the drum surface is subjected to microlesion.Therefore, in assembling or similar operation, when being placed in the framework that the framework of photosensitive drums 7 is housed or developing cylinder 10d is housed on the stand, the operator must pay close attention to photosensitive drums 7 or developing cylinder 10d be contacted with stand.

In an embodiment, as shown in figure 35, being equipped with on the limit of cleaning framework 14 1 openends of photosensitive drums 7 has protuberance 14f.Photosensitive drums 7 be positioned at from line between the end of protuberance 14f inwards (towards the cleaning framework 14).In this structure, shown in Figure 35 and 36, when cleaning framework 14 when being placed on the stand, protuberance 14f contacts with this stand and photosensitive drums 7 does not contact with this stand, thereby has avoided the damage on photosensitive drums 7 surfaces.

Similarly, as shown in figure 37, protuberance 13j is formed on the limit of an openend of the toner development framework C that developing cylinder 10d is housed.Developing cylinder 10d is positioned at from line between the end of protuberance 13j (towards developing frame 13) inwards.In this structure, when the developing frame 13 that is connected as a single entity with toner framework 12 was positioned on the stand, protuberance 13j contacted with this stand and developing cylinder 10d does not contact with this stand.

In this structure and since developing frame 13 or cleaning framework 14 when being placed on the stand developing cylinder 10d or photosensitive drums 7 contact with this stand, can prevent that then photosensitive drums 7 and like are being damaged unintentionally, thus the operability that improvement is assembled.With said structure each parts toner framework 12 of packing into, after developing frame 13 and the cleaning framework 14, developing frame 13 is connected on the cleaning framework 14 so that magazine B is handled in assembling.As shown in figure 38, connect by web member 38 between the framework 13,14.The following describes the connection between the framework 13,14.

In Figure 38, web member 38 comprises that one is threaded the matrix 38a of hole 38b, a rod member 38c and a spring fabricated section 38d, and screw 39 passes screw thread 38b and is tightened, and part 38c, 38d are positioned at the both sides of threaded hole 38b.Rod member 38c comes off from the connection boss (hereinafter will illustrate) that matrix 38a stretches out downwards to prevent developing frame 13.Spring fabricated section 38d is parallel with rod member 38c, and the spring 38e of a downward outreach greater than rod member 38c arranged on its free end.Arm 13k is positioned at developing frame and vertically holds for 13 liang, and a connection boss 13m crosses out on each arm 13k.A spring is accepted the upper surface that groove is positioned at each arm 13k.

In addition, the connection groove 14g that connects boss 13m that is used to pack into is positioned at cleaning framework 14.Securing member 14h is positioned on each groove 14g.Securing member 14h comprises a pilot hole 14i that can insert the rod member 38c of web member 38, the nut 14j and the through hole 14k that can stretch into spring 38e that can be screwed into screw 39.

Shown in Figure 39 A and 39B, for connecting toner development framework C and cleaning framework 14, the connection boss 13m of developing frame 13 is inserted the corresponding groove 14g that connects on the cleaning framework 14 deeply, then web member 38 is fastened on securing member 14h.In other words, the equal load hole 14i of each rod member of web member 38, the spring 38e spring that passes through hole 14k and be compressed against developing frame 13 is accepted among the groove 13h.In this case, screw 39 is screwed into threaded hole 38b and being tightened on the nut 14j.

Toner development framework C is connected to each other so that do relative rotation around connecting boss 13m with cleaning framework 14 in the above described manner, has so just finished the assembling of handling magazine B.When framework 13,14 interconnected, contact ring 10f leaned at the circumferential surface of photosensitive drums 7 so that limit the position of photosensitive drums 7 and developing cylinder 10d.The elastic force of pressing spring 38e makes developing cylinder 10d deflection photosensitive drums 7 (in an embodiment, the elastic force of spring 38e is chosen as 2Kg and tries hard to recommend moving developing cylinder 10d with about tool 1Kg).When toner development framework C is connected on the cleaning framework 14, be positioned at the cross helical gear 7C and the gear 10g engagement that is positioned at developing cylinder 10d end of photosensitive drums 7 ends.

As shown in the Examples, in the syndeton between toner development framework C and cleaning framework 14, install, connect outwards (or inside) stretching, extension of boss 13m because toner development framework C energy edge connects the direction of groove 14g.Therefore, framework 13,14 is (thrust direction) location relatively vertically, so can save the thrust block.

Because web member 38 inserts from the top and be fastened, toner development framework C can be pushed down when web member 38 is fastened.Generally after the toner development framework is connected to the cleaning framework, need to hook framework and framework is close to mutually with tension spring, this just need reserve the space of laying spring, and it is also pretty troublesome to hook the operation of spring.Can and save the space of laying tension spring without tension spring in the embodiment of the present application.In addition, when unclamping screw 39 framework being taken apart each other, the pressure of the spring 38e of pressurized is released, so because of not existing thrust block framework to be opened at an easy rate.

(mounting structure of magazine):

The following describes and be contained in structure on the image device A handling magazine B.

Reach narration above as illustrated in Figures 5 and 6, the left rail 17 with first and second guide rail 17a, 17b is formed on the framework 15 of image device with the right guide rail 18 with first and second guide rail 18a, 18b.Corresponding with these guide rails, shown in Fig. 4 (right flank of display process magazine B) and Figure 40 (left surface of display process magazine), stretch out from the left and right side of the cleaning framework 14 of processing magazine B symmetrically on bearing 14a and axle 21 (by the first guide rail 17a, a 18a guiding) left side/right side.Be positioned at the top of bearing 14a and axle 20 by the rib that the stretches out 40 left sides/right symmetry of the second guide rail 17b, 18b guiding.

Pressure face 41 is positioned at 14 liang of upper surfaces of vertically holding of cleaning framework, and the pressure face of being pressed by pressure piece 19 is contained on the framework 15 of image device.Also be useful on the detent 42 of the web member of accepting web member 20 and being used to locate in addition.As shown in Figure 4, additional ribs 43 stretches out and is positioned at the top of the rib 40 of protrusion from the right flank of cleaning framework 14.Connecting rod 35a is used to open and close bulging shutter 35.Connecting rod 35a is corresponding with the mounting or dismounting mobile phase of handling magazine B around the rotation of axle, thereby opens and closes the bulging shutter 35 that links to each other with this connecting rod.Opening and closing of drum shutter will be explained below.

Handle the installation and removal of the relative image device A of magazine B below referring to Figure 41 to 44 explanation.Similarly locate by left and right guide rail 17,18 although handle the left and right side of magazine B, for simplicity's sake, only right guide rail 18 is done following explanation.

At first as shown in figure 41, behind the open/close cap 16 of opening imaging device framework 15, the axle 21 of handling magazine B is contained on the first guide rail 18a, the rib 40 that protrudes is contained on the second guide rail 18b.Then as shown in figure 42, will handle the framework 15 of magazine insertion equipment along guide rail 18a, 18b sliding axle 21 and the rib 40 that protrudes.Like this, the pressure face 41 of processing magazine B is made processing magazine B insert this framework by pressure piece 19 compressings of framework 15 and leans on the second guide rail 18b.

Then, as shown in figure 43, when the rib 40 that protrudes surpassed the second guide rail 18b, the pressure of pressure piece 19 makes handled magazine B fine rotation and axle 21 is supported on the first guide rail 18a in the counterclockwise direction.As shown in figure 44, when processing magazine B was further inserted, magazine B also further rotated in the counterclockwise direction, so the web member 20 of framework 15 and detent 42 engagements of handling magazine B.Subsequently, as shown in figure 45, when the operator decontrols when handling magazine, the axle 21 of handling magazine B falls into bearing 18c by own wt.At this moment, web member 20 meshes fully with detent, makes to handle pack into the framework 15 of image device and pushed down by pressure piece 19 of magazine B.At this moment, the engagement of the cross helical gear 7c of photosensitive drums 7 and the driven wheel (see figure 6) in the framework 15 is so that transmit driving force.When processing magazine B is installed, handle 19 pairs of pressure of handling magazine B of whereabouts athletic meeting relief pressure spare of magazine B.Therefore, the sensation that the operator who handles magazine B has " click clatter " is installed, this just makes the operator be easy to assert that the processing magazine has been installed into the installation site.

Joint face 20a, the 42a of the detent 42 of the web member 20 of device framework 15 and processing magazine B are parallel to each other.Like this, when web member 20 installed on the framework 15, joint face 20a was horizontal.Its result can make the design of web member 20 and the installation of this web member on framework 15 simplify, thus the generation of stopping scale error substantially.Therefore, make that correctly will handling becomes on the framework 15 that magazine installs to image device is easy to.

Adorn a roller 19b on each pressure piece 19, make, be subjected to the sliding resistance minimum on the processing magazine that roller 19b oppresses when handling that magazine B is offset and pressure piece 19 when pressing pressure face 41.In addition, in an embodiment, when the pressure face 41 of the processing magazine B that is pressed by roller 19a is the ridged surface structure, because of having reduced contact area so can further reduce sliding resistance.

As shown in figs. 1 and 4, it is substantially parallel with the installation direction of handling magazine B to make the upper surface of flat processing magazine B basically.Like this, handle the installing space of magazine in the image device framework 15 and just can do as far as possible for a short time, handle simultaneously some space among the magazine B (as, be used for the space of toner storer and used toner storer) can be fully utilized.

On the other hand, as shown in figure 46, when magazine B is handled in dismounting, handle magazine B and make the rib 40 of protrusion break away from the step 18b1 of the second guide rail 18b, so can in statu quo extract out and unload with handling magazine along (arrow a indication) and hour hands direction fine rotation.Be rotated when excessive along inhour when handling magazine B, then additional ribs 43 (see figure 4)s can lean shutter template 18d (for left rail 17, the rib 40 of protrusion leans (see figure 5) on the constrained vibration guide rail) and go up with restriction and handle magazine along counterclockwise rotation.When the processing magazine is installed, be inserted between the second guide rail 18b and the shutter template 13d in the additional ribs 43 of handling the magazine right side, the rib 40 of the protrusion on the left of the processing magazine is inserted in the second guide rail 17b and limits between the guide rail 17d.Like this, handle magazine B dress, path is restricted when tearing open, thus make the dress of handling magazine B, tear open more steady.

(drum shutter open/close structure):

Drum shutter 35 is with respect to handling the magazine dress, tearing motion open and be opened and closed.Below just describe opening/closed operation of drum shutter in detail.

As shown in Figure 4, the bulging shutter 35 that has arm 35b is installed around axle 35c rotationally, and connecting rod 35a is contained in a 35c rotationally and goes up so that move with arm 35b.So, thereby connecting rod 35a when rotation arm 35b also rotates bulging shutter 35 is opened and closed.Connecting rod boss 35d stretches out from arm 35b.Act on mutually with drum shutter template 18d and connecting rod 35a and connecting rod boss 35d and can make bulging shutter 35 opening and closing.The opening and closing of drum shutter when illustrating that below in conjunction with Figure 41 to 45 will handle magazine B packs image device A into.

Shown in Figure 41 to 45, the shutter module 18d that is positioned on the right guide rail 18 has the first template 18d1 and second a template 18d2 who meshes with connecting rod boss 35d who meshes with connecting rod 35a.Pitch angle basic and in order to the second guide rail 18b of the rib 40 of the protrusion of boot process magazine B, the pitch angle of the first template 18d1 equates that the pitch angle of the while second template 18d2 is greater than the pitch angle of the first template 18d1.

As shown in figure 41, when processing magazine B being inserted and promote, connecting rod 35a is by the first template 18d1 of shutter template 18d engagement (as shown in figure 42) and connecting rod 35a is rotated around axle 35c.The result rotates arm 35b and opens bulging shutter 35; But, this moment drum shutter is not all opened and only is in so-called half-open position.As shown in figure 43, when further pushing magazine B, the rotation of arm 35b makes between the connecting rod 35a and the first template 18d1 and breaks away from, makes between the connecting rod boss 35d and the second template 18d2 simultaneously and mesh.As shown in figure 45, when processing magazine B packed into fully, drum shutter 35 was all opened so that the recording medium of carrying below magazine 2 is not hindered by the drum shutter.

When extracting out will handle magazine B when image device A pulls down from state shown in Figure 45 handling magazine B, be locked in the elastic force of turning round coil spring 35e on the arm 35b making bulging shutter 18d successively by connecting rod boss 35d and connecting rod 35a engagement, thereby close bulging shutter with above-mentioned opposite order.

Above-mentioned bulging shutter 35 is used to protect photosensitive drums 7.In an embodiment, except that drum shutter 35, in image device A, also be provided with laser shutter.This laser shutter constitutes a laser optical path occluding device to prevent that the laser from optical system 1 leaks and shines on the photosensitive drums 7 from (image device) optical unit 1a under equipment inoperative condition.

(laser optical path occluding device):

The following describes the structure of laser optical path occluding device.As shown in figure 47, an opening 1a1 is arranged on the optical unit 1a, laser passes opening 1a1 and can impinge upon on the photosensitive drums 7, and the laser shutter 46 that is curved by sheet metal can cover opening 1a1.Laser shutter 46 has the shutter section 46a and the shaft portion 46b who is positioned at the shutter section left side that contain crooked metal sheet, and both structures are one.Laser shutter 46 is contained on the framework 15 of image device rotationally through axle 46c.

Near the left rail 17 of boot process magazine B, arm 47 is rotatably mounted around axle 47a.Arm 47 have one can be by the free end of the connecting rod 46b of laser shutter 46 engagement.When on the framework 15 that magazine B is installed to equipment, arm 47 leans the end of handling magazine B and locatees.

In this structure, when will handle magazine B insertion by left and right rail guidance the time, open/close part along the pushing of direction shown in arrow arm 47 among Figure 47 for one of magazine B.Like this, the free end of arm 47 connecting rod of shifting laser shutter 46 onto makes shutter section 46b rotate along direction shown in the arrow b.So optical unit 1a rotates along direction shown in the arrow b.So the opening 1a1 of optical unit 1a is opened laser can be impinged upon on the photosensitive drums 7.

The bias force that draws spring that is contained on the connecting rod 46b of laser shutter 46 makes laser shutter 46 always be driven to the closing direction of opening 1a1.Like this, when the operator pulls down when handling magazine B from image device A, because the driving force of arm 47 is eliminated, laser shutter 46 is just automatically closed opening 1a1 with the elastic force of spring 47.

Therefore, unless packing image device into when carrying out the video recording operation, all can not impinge upon on photosensitive drums 7 and the like from the laser of optical unit 1a handling a magazine B.Because the connecting rod 46b that is used to open and close laser shutter 46 is with near arm 47 all is positioned at left rail 17 and relative with right guide rail 18, this is fully taken the space that these parts are installed.Therefore, make the space be effectively utilized and reduce the size of equipment.In an embodiment, as shown in figure 48, the distance of free-ended one section about 5-6mm of magazine is left in the position that boss 14m leans arm 47.

(skew of grip part):

As shown in figure 48, when the operator installs to image device A when going up handling magazine B, be positioned at the boss 14m that handles a magazine B left side (longitudinally or axially) shoulder and promote to be positioned at arm 47 (being used to open and close laser shutter 46) on the image device framework.Meanwhile, metal shaft 21 (the about 10mm of diameter X1, the about 5mm of overhang X2) is connected with the ground connection web member (electric contact) 51 that has elasticity and be positioned on the device framework from handling magazine B right side and stretching out and be used as drum ground connection.In addition, the connecting rod that is positioned at magazine B right side leans the shutter template 18d of framework to open bulging shutter 35.

Like this, when magazine B is installed, for opening vertical bias force that laser shutter 46, one pressure are added in magazine B left side with antagonistic spring 47b.On the other hand, the right side of handling magazine B is subjected to one because contacting between metal shaft 21 and the ground connection web member 51 makes pressure that rubber-like web member 51 is out of shape and one resist the pressure of the bias force of turning round coil spring 35e for opening bulging shutter 35.In an embodiment, be used to open the power maximum of bulging shutter 35 in the above-mentioned pressure.Therefore, when magazine inserted, this magazine was subjected to the pressure skew from the C2 of this magazine longitudinal center.

So in an embodiment, as shown in figure 48, the position of rib 12d is provided with the C1 of longitudinal center of these ribs (constituting the grip part of magazine B) is moved to a lateral deviation of connecting rod 35a that is provided with bulging shutter 35 and metal shaft (electric-conductor) 21 from the C2 of longitudinal center that handles magazine B.In other words, in an embodiment, the C1 of longitudinal center of rib 12d is from the about 10mm of center C 2 skews of the vertical long L11 (about 300mm) that handles magazine B (when handling magazine B and pack image device A into, the C1 of longitudinal center of rib 12d is offset about 10mm from the about 10mm of recording medium transfer passage off-centring or from the longitudinal center of the photosensitive drums 7 of processing magazine B).

Use said structure, as shown in figure 49, when handling a magazine B and pack image device A into, the right side of the operator grasping magazine B C2 of longitudinal center, promptly be provided with bulging shutter 35 connecting rod 35a a side and this magazine is inserted this equipment.When operating like this, the side that vertically is provided with connecting rod 35a of magazine B is subjected to a power that is slightly larger than other side.Because the biasing of power will make the pressure that opens and closes drum shutter 35 eliminate, thereby make magazine B can not rock the level and smooth image device A of insertion in ground and structure is as a whole.In addition, because rib 12d is parallel with the photosensitive drums 7 along vertical setting of magazine B, when grasping rib 12d inserted this magazine, the direction of insertion that vertically is easy to magazine of magazine kept vertical, therefore during inserting magazine, was easy to eliminate rocking that this magazine two vertically holds.

Except constituting the grip part with rib 12d shown in Figure 48, also available being positioned at the groove 73 on the framework or using the boss or the chimb 74 that are positioned on the framework shown in Figure 51 to constitute grip part as shown in figure 50.That is to say that grip part can be made of any structure that the operator is convenient to grasping.

Certainly, the position of grip part is provided with to be not limited in and is offset to the connecting rod 35a that is provided with bulging shutter 35 and the example of metal shaft 21 1 sides in the embodiments of the invention.Greater than the pressure of antagonistic spring 47b bias force with when making the pressure of web member 51 distortion, the position of grip part is arranged on the side that deflection is provided with boss 14m such as, the pressure of and opposing wind spring 35e bias force very strong at the elastic force of the spring 47b of laser shutter 46.In this set, in the time will handling magazine and pack image device into, grip part should be arranged on is partial to the side that framework is subjected to bumping because of the top between the parts of image device and framework the bigger assembling resistance that produces.

(to the explanation of electric contact):

Be presented in the electrical connection between each parts when handling magazine B and packing image device into below.

When processing magazine B packed image device A into, each contact on each contact on the processing magazine B and the framework 15 of image device joined, and processing magazine B is constituted with image device be electrically connected.In other words, shown in Figure 52, the end that is arranged in discharge silk 27 as conductor is used to detect the contact 27a (embodiment of toner surplus, make by stainless steel) expose from the bottom of developing frame 13, simultaneously the development bias voltage contact 48 (embodiment is made by stainless steel) that is used for adding the development bias voltage to developing cylinder 10d as conductor also exposes.In addition, the charging bias voltage contact 49 that adds the bias voltage that charges to charging roller 8 with conductor (using stainless steel among the embodiment) being used for of making exposes from cleaning framework 14 bottoms.With respect to photosensitive drums 7, the contact 27a and the development bias voltage contact 48 of discharge silk 27 are positioned at a side, and the inclined to one side electric contact 49 that charges is positioned at opposite side.Charging bias voltage contact 49 is one (Figure 10) with contact 26 structures.

With regard to these contacts (as shown in figure 35) with respect to regard to the transfer roll 4, discharge wire connection point 50 that is connected with the contact 27a of discharge silk 27 when packing processing magazine B into and the development bias voltage attachment plug 50b that is connected with development bias voltage contact 48 are set at a side of recording medium transporting direction, and the charging bias voltage attachment plug 50c that is connected with charging bias voltage contact 49 is arranged on opposite side.Shown in Figure 54, the attachment plug 50b, the 50c that are contained among the seat cover 50d can stretch out but this cover that can not slip away from this cover.These attachment plugs are upwards promoted by spring 50f and are electrically connected with wiring on being positioned at electric substrate 50e.Seat cover 50d is contained on the electric substrate 50e through spring 50f.In the contact 48,49 that leans attachment plug 50b, 50c, charging bias voltage contact 49 constitutes one to have straight line portion and is connected the arc of sweep between straight line portion, and makes sweep be positioned at the side of the pivot hinge 16a of open/close cap 16.Like this, pack into handle magazine B after, when open/close cap 16 around hinge 16a when direction shown in the arrow C is closed, the charging bias voltage contact 49 of the most close hinge 16a and radius of gyration minimum can smoothly be connected with attachment plug 50c effectively.

The axle 21 of supporting photosensitive drums 7 one ends is made of metal, and photosensitive drums 7 needs through metal shaft 21 ground connection.For this reason, shown in Fig. 6 and 48, when install handling magazine B, have a slice spring and be positioned at through the earthing member chassis ground 51 of framework 15 on the supporting part 18a of right guide rail 18 of bolster 21.Like this, when packing this magazine into, axle 21 is connected with earthing member 51.

The setting of electric contact is described referring to Figure 22 below.As shown in figure 22, contact 48,49 is arranged on the side that photosensitive drums 7 is unkitted cross helical gear 7c, and is positioned at opposite side on the photosensitive drums 7 as the metal shaft 21 of drum earthing member.In that direction is promptly on recording medium transporting direction longitudinally perpendicular to photosensitive drums 7, development bias voltage contact 48 is positioned at the side of photosensitive drums towards developing apparatus 10, and charging bias voltage contact 49 is positioned at opposite side.Metal shaft 21 as the drum earthing member is stretched out framework 14 and is on the rotation centerline of photosensitive drums 7.

Development bias voltage contact 48 and charging bias voltage contact 49 relative photosensitive drums 7 are vertically along a line setting, and are positioned at the both sides of gear flange (spur gear) 7d and photosensitive drums 7.Simultaneously, contact 48,49 is set at the inboard of vertical gear flange 7d outer face of photosensitive drums 7.Thereby above-mentioned setting can reduce to handle the volume that the longitudinal size of magazine B dwindles this processing magazine.

As mentioned above, charging bias voltage contact 49 is outwardly-bent.In other words, packing into when handling magazine, a straight line of contact 49 partly becomes leading end and contact from this straight line portion bending.Use this structure, when processing magazine B is packed into image device A, both made the contact angle between the charging bias voltage attachment plug 50c of charging bias voltage contact 49 and image device skew occur, this skew will be eliminated and charging bias voltage contact 49 be leaned really effectively with the bias voltage attachment plug 50c that charges contact.Though when processing magazine B was packed into image device A, charging bias voltage contact 49 quilts can not damage this contact 49 and attachment plug 50c to prelocalization when this processing magazine operation is installed.

In addition, the contact 27a that is used for detecting the discharge silk 27 of the toner storer 10a toner surplus that is in image device one side developing apparatus 10 is positioned at relative photosensitive drums 7 the same side longitudinally with development bias voltage contact 48, and at the interval of the cross side (towards developing apparatus) of photosensitive drums 7 and photosensitive drums 7 greater than development bias voltage contact 48.

When using above-mentioned contact to be provided with, owing to charging bias voltage contact 49 separates with earthing member metal shaft 21, thus there is not the danger that produces floating capacitance, thereby make the stable deviation of charging of avoiding of charging voltage.In other words, if the drum ground contact is near other contact, then discharge lines and the contact that is provided with around the drum ground contact and similarly will produce floating capacitance between other contact, its result can make and be used for developing, deviation appears in the alternating voltage of charging and the detection of toner surplus.Particularly when the charging roller that contacts with photosensitive drums 7 charges to drum 7, control owing to implement constant current, if alternating voltage will make image quality degenerate because of floating capacitance fluctuates.Otherwise,, thereby make alternating voltage keep the stable or normal deviation of charging of avoiding if use the contact among the embodiment to be provided with the elimination floating capacitance.

In addition, because development bias voltage contact 48 and charging bias voltage contact were located at the both sides of photosensitive drums 7 in 49 minutes, this has just been avoided the electrical interference between these contacts.

In view of the above, in an embodiment, when magazine B is handled in assembling,, simultaneously charging bias voltage contact 49 is installed to a relative side of rousing axial metal shaft 21 relatively along axially installing on the cleaning framework 14 of supporting photosensitive drums 7 of drum 7 relatively from drum 7 outwardly directed steering handle metal shaft 21.Again development bias voltage contact 48 is installed on the toner development framework C of supporting developing apparatus 10.When cleaning framework 14 interconnects with toner development framework C, contact 48 be in photosensitive drums 7 axially on.Afterwards, framework 14 and C are connected to each other and handle magazine B so that assemble.

(the toner surplus detects and the magazine mounting testing circuit):

The following describes the toner surplus and detect and handle the magazine installation and measuring.In this equipment, as mentioned above, according to the toner surplus among the change-detection processing magazine B of discharge silk 27 on the magazine and the static capacity between the developing cylinder 10d.For this reason, be provided with the circuit shown in Figure 55 in this equipment.

Shown in Figure 55, developing cylinder 10d constitutes an equivalent capacitor with discharge silk 27.High-voltage power supply HV applies a rectangular-wave alternating-current voltage (V for developing cylinder 10d _Pp=about 1600V).From the high pressure of high-voltage power supply HV have the rising and the descending branch of rectangle and be developed a 10d and discharge silk 27 between electrostatic capacitance and resistance R 1, R2 be shaped as and derive from waveform ANT.Diode D1 is a catching diode with negative output.First peak holding circuit that derivation waveform ANT is made up of operational amplifier OA1, diode D2 and capacitor C1 by resistance R 1, R2 dividing potential drop and quilt carries out peak detection, and is converted into a DC clean number.Resistance R 3 is used to make capacitor C1 discharge.

Electrostatic capacitance between developing cylinder 10d and the discharge silk 27 depends on the toning dosage that exists between developing cylinder 10d and the discharge silk 27.In other words, when the specific inductive capacity between two conductors increased, the electrostatic capacitance between this two conductor also increased.Therefore, when toning dosage reduced down, because the specific inductive capacity between conductor reduces, electrostatic capacitance also reduces, when toning dosage reduced, the voltage that first peak holding circuit detects just reduced.

On the other hand, be added to developing cylinder 10d from the output of high-voltage power supply HV and the derivation circuit formed by reference capacitor C2, resistance R 4, resistance R 5 (volume resistance) and resistance R 6 on.Diode D3 is the catching diode with negative output.Second peak holding circuit that the derivation waveform that is detected by resistance R 5 is made up of operational amplifier OA2, diode D4, capacitor C3 and discharge resistance R7 is converted to the DC signal.Adjust volume resistance R5 so that the output of second peak holding circuit becomes the reference voltage (being about 2.7V in an embodiment) that needs.

The output (electromotive force one reference voltage of capacitor C3) of the relatively output of first peak holding circuit of comparator C O1 (electromotive force one and the toner surplus of capacitor C1 are worth accordingly) and second peak holding circuit is also exported one and is represented the toner residual signal.Like this, when between developing cylinder 10d and the discharge silk 27 enough toner surpluses being arranged, the electromotive force of capacitor C1 becomes high level greater than the electromotive force of capacitor C3 and the output of comparator C O1.When the toning amount of 27 of developing cylinder 10d and discharge silks reduced, the electromotive force of capacitor C1 descended.When the electromotive force of capacitor C1 was lower than the electromotive force of capacitor C3, the output of this comparer became low level.Therefore, can detect the toner surplus according to detection to comparer CO1 output.

Whether also need detect processing magazine B in an embodiment is installed on the image device A.In other words, shown in Figure 55, when the electromotive force of capacitor C1 became less than reference potential E when (being about 1V in an embodiment), the output of comparator C O2 becomes low level, and this just shows that handling magazine B does not install on the image device A.

For example, when power connection, control the controller of this equipment and export the rectangle exchange current to developing cylinder 10d from high-voltage power supply HV.But, the image device A if processing magazine B does not pack into is owing to photosensitive drums 7, developing cylinder 10d and discharge silk 27 all are not in the circuit of Figure 55, so control signal is not imported into operational amplifier OA1.At this moment, the electromotive force vanishing of capacitor C1.So, when not having the toner agent in the magazine, just can detect the existence of handling magazine B/do not exist by the electromotive force that reference potential E is adjusted to the Relative Zero level and the positive voltage of certain surplus is arranged and make electromotive force E be lower than capacitor C1.

The voltage relationship that the toner surplus detects between level and the magazine installation and measuring level is shown among Figure 56.In Figure 56, the detection reference voltage (electromotive force of capacitor C3) that being used for the toner surplus has/do not have can be set an alarming value in order to represent that recording toning dosage is not enough.In an embodiment, be to be as the criterion with the situation that has about 20g toner between developing cylinder 10d and the discharge silk 27 to reach (in the mill) a certain electrostatic capacitance (about 7.5pF) by adjustment volume resistance R5 and regulate this reference voltage.The detection reference voltage that is used for magazine and is equipped with/does not have can be by resistance to the dividing potential drop of supply voltage and obtain.

In the circuit of Figure 55, use comparator C O2 to detect having/not having of magazine.Available commutator IN1, IN2 with suitable amplitude limit value replaces comparator C O2 in Figure 57.In this case, must adjust from discharge silk 27 by resistance R 1, R2, R4, R5, R6 and detect magnitude of voltage, so just make that the output of commutator IN1, IN2 does not become low level when having toner in the magazine.

In addition, the detection that has/do not have about magazine, shown in Figure 58, when the output of capacitor C1 when an isolated amplifier BA is sent to controller and carries out the A/D conversion, this detection will be more reliable.

(control section):

Control system below in conjunction with the summary of the functional block diagram shown in Figure 59 image device A.

In Figure 59, the control section 60 of controlling whole image device comprises the ROM of the CPU of microcomputer, the control program that stores CPU and various data and the RAM that also can keep in various data as the workspace of CPU.

The signal that control section 60 receives from the sensor groups 61 of the sensor that comprises holding paper sensor and similar sensor.This control section also receives in the magazine signal that the toner surplus 61a of testing agency that static capacity according to 27 of developing cylinder 10d and discharge silks detects the toner surplus sends.In addition, this control section from main frame 62 for example also receives, computing machine, the image signal of word processor or similar devices.

According to the various processing procedures of these signal controlling part 60 controls for example, exposure 63, charging 64 (charging roller 8 and likes), develop 65 (developing cylinder 10d and likes), transfer printing 66 (transfer roll 4 and like), photographic fixing 67 (fixing roller 56 and like) and recording medium are carried 68 (alignment roller 3d1,3d2, outlet roller 3f1,3f2 and likes).This control section is also controlled main drive motor 71 by writing down the counter 70 that this control section is added to the umber of pulse on the driver 69.

In an embodiment, control section 60 also receives expression toner testing result for the signal of no toner and start indication and change alarm 72 of this processing magazine (for example, turn on the light or start hummer).

(imaging operation):

The following describes and handle pack into imaging operation behind the image device A of magazine B.

As shown in Figure 1, when pack into sheet feed stacker 3a and sensor (not shown) of recording medium 2 detects packing into maybe when the box 3h that recording medium 2 is housed is loaded into and pushes copy start key of this recording medium, pickup roller 3b or 3i begin to rotate, and alignment roller 3d1, the 3d2 of Pei Dui separate roller 3c1,3c2 and pairing rotate so that recording medium 2 is delivered to the imaging station simultaneously.Synchronous with this conveying step to alignment roller 3d1,3d2, photosensitive drums 7 is along direction of arrow rotation among Fig. 1, also through adding the charging bias voltage for charging roller 8 and making photosensitive drums 7 surperficial uniform charging.Subsequently, impinge upon on the photosensitive drums 7 through exposed portion 9, thereby on drum, form and the corresponding latent image of this video from optical system 1 and the corresponding laser of image signal.

When latent image formed, the developing apparatus 10 among the processing magazine B is actuated to rotate toner conveying member 10b made the toner among the reagent storage device 10a output to developing cylinder 10d, and forms toner layer on tube 10d.The voltage identical with electromotive force is added to developing cylinder 10d and make the latent image on the photosensitive drums 7 become visible toner image with the charging polarity of photosensitive drums 7.Recording medium 2 is delivered between photosensitive drums 7 and the transfer roll 4, and be added on the transfer roll 4 with the opposite polarity voltage of toner, the toner image on the photosensitive drums 7 just is transferred on the recording medium 2 like this.After the transfer printing, photosensitive drums 7 continues to rotate along the direction of arrow among Fig. 1, and simultaneously, the residue toner on the photosensitive drums 7 is cleaned, and scraper plate 11a wipes off and taken in used toner storer 10c.

In addition, the recording medium 2 that has the transfer printing toner image is sent to fixing device 5, makes the toner image photographic fixing at this place on recording medium 2 with heat and pressure.Afterwards, outlet roller 3e, 3f1,3f2 deliver to output area 6 with recording medium 2.About fixing device, in an embodiment, in the device that uses so-called hot fixation type, also can use the fixing device of other type, for example the pressure-type fixing device.

(handling the recovery of magazine):

According to embodiment the recovery of handling magazine is described below.Living, this magazine goes out of use during toner exhaustion in handling magazine.It is together discarded that like this, still spendable parts such as roller are also handled magazine with this.Recently, for the consideration to the protection of earth environment, not according to discarded various electric equipment of old way and electronic equipment, the parts of these equipment must be beneficial to economize on resources by reuse (upgrade or reuse), the energy and minimizing dust.

So the parts of those long service life in according to the processing magazine of embodiment are as still being used behind charging part, development part or the toner exhaustion of cleaning device in magazine.Therefore, wherein available parts are collected and reclaimed to the processing magazine of using up toner at present.

The following describes the program that magazine reclaims of handling.This program comprises the following steps that (1) collects, (2) classification, and decompose (3), and (4) are selected, (5) cleaning, (6) check, ressemble (7).These steps are described in detail in detail below.

(1) collect:

By user and maintenance personal delivering to the collection center with the processing magazine of crossing.

(2) classification:

The processing magazine with crossing of collecting the center of respectively collecting is transported to the magazine recovery plant, and according to the processing magazine classification of type to collecting.

(3) decompose:

Classified processing magazine is resolved into big parts.

(4) select:

Check parts that this is big so that select or be divided into available parts and because of loss on transmission or the life-span disabled parts that expire.

(5) cleaning:

Only cleaning selects qualified parts with the new parts as recovery.

(6) check:

After the cleaning, check each parts whether fully to have its original function and whether can being reused.

(7) ressemble:

Re-assembly a new processing magazine with the parts that are up to the standards.

In recovery, charging roller 8, developing cylinder 10d and similarity piece can be reused through ressembling, and framework 12,13,14 then is crushed to material use.If framework 12,13,14 is made of different materials, when these frameworks were forced together, different materials just mixed, and this certainly will will reduce the mechanical property of the material that is reused.Therefore, every kind of framework 12,13,14 must be independent or crushed respectively.But, owing to needing that toner framework and developing frame welded together are separated from each other through cutting, will make the reclaimer trouble that becomes.But, like aforesaid embodiment is said, toner framework 12, developing frame 13 and cleaning framework 14 all are to adopt same material (polystyrene resin), so both made and framework 12,13,14 is crushed together and become granule, its mechanical property can not reduce yet, thereby can improve reclaimer.

In an embodiment, because the frame material polystyrene resin is a kind of material similar to the toner component (both all is phenylethylenes), therefore, both made because of cleaning thoroughly is bonded on the framework toner, the mechanical property of squeezing the frame material that obtains after broken can not reduce as the different materials mixing yet.

Because cleaning framework 14 can separate with toner development framework C, so mainly dividing broken these frameworks of don't push just needn't use and toner development framework identical materials manufacturing cleaning framework, but when using these frameworks of the made similar to the toner component materials, framework is cleaned in the most handy material identical manufacturing with toner development framework C.But, cleaning framework 14 must have enough intensity and supports photosensitive drums 7 and similarity piece.When cleaning framework 14 usefulness were made with toner development framework C identical materials polystyrene resin, the physical strength of this cleaning framework was less than the physical strength of the cleaning framework of being made by polyphenylene oxide (PPO) or polyhenylene ether (PPE) but as shown in the Examples.Therefore, shown in Figure 60, clean framework 14 in an embodiment and be provided with a upper wall 14n who is used to cover photosensitive drums 7 top between the two side 14P of the rotating shaft that is used to support photosensitive drums 7 (Fig. 4,7 and 47-51), with reinforced sidewall 14P.

The next door 14q that is located on the used toner storer 11c is divided into many chambeies to this memory inside, is provided with stiffening rib 14r in the side in the next door in each chamber to strengthen the cleaning framework.Next door 14q limits the lengthwise movement of toner mistake in the used toner storer 11c thereby can prevent that used toner from leaking from used toner storer 11c.Strengthen cleaning framework 14 as stated above and just make when using with toner development framework C identical materials (polystyrene resin) manufacturing cleaning framework 14, framework 14 can obtain enough physical strengths.

[other embodiment]

The following describes other embodiment of each parts of aforementioned processing magazine and image device.

(charging device):

In the aforementioned embodiment, the carrying plane 24a that the end of roll shaft 8a is leaned bearing 24 can limit moving axially of charging roller 8.In a further embodiment, shown in Figure 61 and 62, the end of charging roll shaft 8a can be by bearing 52 supportings with cylinder chamber 52a.In this structure, when among charging roll shaft 8a trend Figure 61 during arrow points, the end face of charging roll shaft 8a will be withstood by the bottom 52b in chamber 52, thereby to this roller location.Therefore, this structure can reach the effect identical with previous embodiment.The most handy similar to the bearing 24 in the previous embodiment material that metal is had a good sliding of bearing 52 for example polyacetal resin is made.

Shown in Figure 63, on bearing 52, can open a lateral slot 52c, the roll shaft 8a that will charge in groove 52c elastic deformation firmly inserts bearing 52.This structure can be improved the assembling of charging roller 8.When processing magazine B is installed, if make being directed downwards of groove 52c, a spot of smear metal was stayed among the cylinder chamber 52a, owing to these smear metals can drop out chamber 52a through groove 52c, so the charging roll shaft is stably rotated in the 52a of chamber.

Structure with bearing 24 or 52 supporting charging roll shaft 8a, one end has been described in the aforementioned embodiment.Also can support developing cylinder 10d and similarity piece with bearing 24 or 52.

In first embodiment,, be provided with limited part 14b for preventing from when charging roll shaft 8a moves, to cause the elastic deformation of contact 26.In another embodiment shown in Figure 64, a rib 53 is set as limited part at cleaning framework 14, available hot pressing or similar approach are fixed on contact 26 on the rib 53.When using this structure, if charging roller 3 is subjected to the power P shown in the arrow among Figure 64, contact 26 will not produce bigger distortion because of leaning rib 53.Therefore, in use, both made because of magazine comes off in transportation to produce power P and also can not damage contact 26.

Shown in Figure 65, available double sticky tape will be bonded to the side of rib 53 by the cushion pad 54 of rubber or analog system and this cushion pad is between rib 53 and the contact 26.Use this structure, when charging roller 8 is subjected to time spent of doing of the P of power shown in the arrow, cushion pad 54 can prevent that contact 26 from producing elastic deformations.If the contact end is not to contact with the end face of the roll shaft 8a that rotates abreast, then contact 26 will cause vibration and/or noise because of off-centre takes place with contacting of roll shaft 8a end face.But can eliminate vibration owing to be provided with cushion pad 54 in an embodiment, thereby avoid the noise generation.

(developing apparatus):

In aforementioned first embodiment, as shown in figure 15,3 rib 13b, 13c, 13d are set on the developing frame 13, the sharp-pointed wedge shape of second rib 13c is thrust developing blade 10e.Shown in the example of Figure 66, the end of second rib 13c needs not to be wedge shape, can be made into sharp-pointed arrow-shaped, and the tip place of this rib 13c can very effectively lean on developing blade 10e.

In first embodiment, as shown in figure 18, when the exposed portions serve of discharge silk 27 is subjected to impacting, is positioned at sweep 27b on the discharge silk 27 silk 27 the recess 13e that can prevent to discharge and floats from developing frame 13.The shape of sweep 27b is not limited in situation shown in Figure 180, and it can also be trapezoidal shown in half garden shape shown in Figure 67 A or Figure 67 B.

In order to prevent that discharge silk 27 from floating, shown in Figure 68, replace sweep 27b with the opening 13P that is arranged on the developing frame 13.Discharge silk 27 can pass opening 13P.Use this structure, when discharge silk 27 was subjected among Figure 68 the external force shown in the arrow, discharge silk 27 can not float from developing frame 13 yet, therefore, had avoided generation breach or slit between developing frame 13 and toner leakage preventing sealing 29.

In addition, chamber, a garden 13q with diameter of restriction discharge silk 27 passages is set on developing frame 13 replaces opening 13P (shown in Figure 69), discharge silk 27 can pass cylinder chamber 13q.Use the situation of this structure similar to opening 13P, when discharge silk 27 was subjected among Figure 69 the external force shown in the arrow, discharge silk 27 can not float from developing frame 13.

In first embodiment, the location of developing cylinder 10d on its rotation direction is described.This location also can be similar with the location of the charging roller 8 shown in Figure 61 to 63, leans a bearing by an end that makes the developing cylinder rotating shaft and realize, this bearing can be a cylindricality.When not only using developing cylinder 10d but also using nonmagnetic toner, then need on developing cylinder 10d, form toner layer with an applicator roll.In this structure, can make an end of this applicator roll lean one and have the bearing of said structure and locate this applicator roll.

(cleaning device):

In the aforementioned embodiment, shown in Figure 12,13A and 13B, to overlapping being described of expand the sheet 10i and the agent leakproof seal 10h that stealthily substitutes.This structure among Figure 12,13A and the 13B can be considered according to the relation between cleaning device (cleaning balde 11a soaks sheet 11b, toner leakage preventing sealing 11e) and the photosensitive drums 7.In other words, soaking sheet 11b can vertically hold the toner leakage preventing sealing 11e of outside overlapping with cleaning balde 11a two.

(other):

Processing magazine of the present invention not only is suitable for forming above-mentioned monochromatic video, and also can form polychrome video (for example, double-colored video, three look videos or panchromatic video) by a plurality of developing apparatuss 10 are set.

As developing method, common double component magnetic brush development method, pouring liquid development method, contact development method or cloud and mist development method all can use.

About charging device, in first embodiment, when using so-called contact-type charging device, one contains three tungsten filament walls by the metal cap sealing such as aluminium, can be put to use thereby the negative ions that produces by tungsten filament is added high pressure is transferred to the common charging device of the surperficial uniform charging that makes photosensitive drums 7 on the photosensitive drums 7.

Charging device can also be scraper plate (charging scraper plate) type, insert type, piece type, bar type or silk thread type except aforesaid roll shape.

The cleaning device that is used to remove residual toner on image carrier such as the photosensitive drums 7 can be made of scraper plate, hairbrush and/or magnetic brush.

Can use organic semiconductor (OPC) about image carrier, amorphous silicon (A-Si), selenium (Se), zinc paste (ZnO) or cadmium sulfide (CdS) as photoreceptor.The shape of image carrier is not limited to cydariform, also with shape.

Handle magazine B and comprise electric photography photoreceptor and at least one treating apparatus as image carrier.Handle magazine can constitute one contain an image carrier and a charging device can dismounting on an image device integral unit, or constitute one contain an image carrier and a developing apparatus can dismounting on an image device integral unit, or constitute one contain an image carrier and a cleaning device can dismounting on an image device integral unit, or constitute one contain an image carrier and two or more treating apparatus can dismounting on an image device integral unit as the aforementioned.

In other words, handle magazine constitute one contain an electric photography photoreceptor and a charging device, a developing apparatus or a cleaning device can dismounting on an image device integral unit, or constitute one contain at least one device in an electric photography photoreceptor and charging device, developing apparatus and the cleaning device can dismounting on an image device integral unit, or constitute one contain an electric photography photoreceptor and at least one developing apparatus can dismounting on an image device integral unit.

Image device in the aforementioned embodiment is a laser copier.But the present invention is not limited in laser copier.The present invention also can be used for for example LED duplicating machine of other image device, electricity photography duplicating machine, fasystem or word processor.

As previously mentioned, all adopt same material owing to constitute the framework of handling the magazine housing among the present invention, therefore, the welding between the framework is firm reliable.

Because it is similar to toner to constitute the material of framework, therefore when the recovery magazine, both made on the crushed frame material and be stained with toner, the mechanical property of this material can not resemble different materials when mixing and degenerate yet.So, when reclaiming, just will framework apart not open, simplified clean operation.

Because it is similar to the charge characteristic of developer to constitute the charge characteristic of frame material, thus unusual charging in imaging operation with regard to not taking place to cause because of developer friction framework, thus make the video of acquisition have high-quality.

As mentioned above, according to the present invention, be contained in magazine framework both sides owing to be used for bulging shutter that the opening and closing image carrier uses and the mechanism of laser shutter, thereby can effectively utilize the space, thereby make the compact in size of image device.

In addition, because substantially the same at the load of magazine both sides generation along the magazine direction of insertion when with respect to image device loading and unloading magazine, some that just might reduce in the loading and unloading magazine process rocked, thereby improves installation accuracy.

By a little as seen, the present invention can provide a kind of method and image device of handling magazine, this processing magazine of assembling, can realize handling the stability that magazine loads and unloads.

Claims (20)

1. the processing magazine (B) on the main body that is installed in image device (A) removably, this processing magazine comprises:

A framework (12,13,14);

One be arranged on photoreceptor on the described framework (7,7a, 7b);

At least one charging device that described photoreceptor is worked (8), developing apparatus (10) or cleaning device (11), wherein said charging device charges to described photoreceptor, described developing apparatus will be formed on an image development on the described photoreceptor, and described cleaning device is removed the remaining toner on the described photoreceptor;

A ground contact (21), be used for contacting with a electric contact (51) on the described image device main body, and make described photoreceptor be electrically grounded to described main body when described processing magazine installs on the main body of described image device, described ground contact is located on the described framework of an axial side of described photoreceptor;

One is abutted against parts (14m), this is abutted against parts and is used for being close to a laser optical path occluding device (46 on the main body that is arranged on described image device when described processing magazine is installed on the described main body, 46a, 46b, 46c, 47,47a 47b), and opens laser optical path (1a1), this is abutted against on the described framework of axial opposite side that parts are located at described photoreceptor

Wherein, described processing magazine is installed on the described main body in removable mode on the direction that an axis direction with described photoreceptor intersects;

Wherein, in the process that described processing magazine is installed on the described main body, described ground contact and the described parts that are abutted against contact with described electric contact and described laser optical path occluding device respectively.

2. processing magazine as claimed in claim 1, wherein, described being abutted against on the boss that parts are arranged on described framework.

3. processing magazine as claimed in claim 2 wherein, protrudes on the direction that the installation direction of described boss when installing on the described main body with described processing magazine intersects.

4. as claim 2 or 3 described processing magazines, wherein said boss is positioned at the upper part of described framework, and described upper part is located at position upwards when described processing magazine is installed on the described main body.

5. as claim 2,3 or 4 described processing magazines,, describedly be abutted against the arm (47) that parts abut against described laser optical path occluding device wherein in the vertical position of the about 5-6mm of end of the inside described processing magazine of distance.

6. as claim 1,2 or 3 described processing magazines, wherein, described ground contact is provided with coaxially with a photosensitive drum as described photoreceptor.

7. processing magazine as claimed in claim 6, wherein, described ground contact is made of metal, and makes an integral body with a drum axle (21) of described photosensitive drum; Described drum axle is used for described photosensitive drum is supported on described framework.

8. processing magazine as claimed in claim 7, wherein, described ground contact is an outer face of described drum axle.

9. as claim 1,2 or 3 described processing magazines, wherein,

Described framework comprises a cleaning framework (14), a developing frame (13) and a toner framework (12), described cleaning framework links to each other with a whole coupling part of described developing frame and described toner framework in the mode that can swing, described clean frame supports described photoreceptor, described charging device and described cleaning device, described developing frame supports described developing apparatus, described toner framework has a toner retaining part (10a), employed toner when being used to preserve described developing apparatus and developing, and grip portions (12d, 73,74), the operator can hold described processing magazine by this grip portions, wherein said processing magazine is installed on the described main body as follows, promptly makes described cleaning framework in front, and described toner framework is positioned at the back.

10. processing magazine as claimed in claim 9, wherein said framework have one makes illumination to described photoreceptor and form first opening (9) of a latent image and one thereon and be used to make developed image from described photoreceptor to be transferred to second opening on the transfer materials (2).

11. as claim 1,2 or 3 described processing magazines, wherein, described laser optical path occluding device comprises a laser shutter (46) and an arm (47), when described when being abutted against parts and being close to described arm, by move this laser shutter of described arm open an optical unit (1, the 1a) opening (1a1) on.

12. as claim 1,2 or 3 described processing magazines, also comprise: be used to protect the bulging shutter (35) of a transfer area on the described photoreceptor and one to be arranged on shutter opening device (35a the same side, that be used to open described bulging shutter with described ground contact, 35, b, 35c, 35d); In described processing magazine was packed the process of described main body into, the fixture (18d2) that described shutter opening device is set on the main body was close to and moves, thereby described bulging shutter is opened.

13. as claim 1,2 or 3 described processing magazines, also comprise a cross helical gear (7c) that is arranged on described ground contact the same side, wherein when described processing magazine installs on the described main body, described cross helical gear receives a driving force from main body and rotates a photosensitive drums as described photoreceptor.

14. processing magazine as claimed in claim 1, wherein, when described processing magazine is inserted in the cavity and arrives the working position with this cavity of described ground contact in the contact component (51) of a corresponding side sliding friction takes place contacts with electric, thereby when making described magazine be in the working position with respect to described image device ground connection;

The described parts that are abutted against stretch out from described frame facet, when described handle box is inserted in the described image device and arrives the working position, describedly be abutted against the cavity opposite side driver unit (47 that parts were configured to and were provided as described laser optical path occluding device at a bullet top formula laser beam tripper, 47a) be meshed, this tripper be pushed into an open position of revolting this bullet top formula laser beam tripper;

Like this, when described processing magazine is inserted in this equipment, and when arriving the working position, friction between described ground contact and the contact component acts on the described processing magazine in a side of the described framework of a described end of described photoreceptor, and the spring force of described tripper acts on the described processing magazine at the opposite side of the described framework of the described other end of described photoreceptor.

15. as claim 1 or 14 described processing magazines, the wherein said parts that are abutted against are arranged on top as a turning axle of a photosensitive drums of described photoreceptor.

16. processing magazine as claimed in claim 15, wherein said photosensitive drums also have a spur gear (7d) that is arranged on the described opposite side of described framework, are used for driving a transfer roll of this image device.

17. processing magazine as claimed in claim 7 also comprises a contacted conducting piece of an inside surface (22) with described drum.

18. an image device, this image device have a main body, can pack into removably one on this main body and handle magazine, to form an image on a recording medium, described image device comprises:

(a) the laser beam emitter (1,1a);

(b) the laser optical path occluding device (46,46a, 46b, 47,47a, 47b), this device has an equipment that is used to block the light path of the laser beam of sending from described laser beam emitter and is abutted against parts;

(c) can install removably an erecting device of handling magazine (18c), this processing magazine comprises for 18a, 18b:

A framework;

A photoreceptor that is arranged on the described framework;

The charging device that at least one works to described photoreceptor, developing apparatus or cleaning device, wherein said charging device is described photoreceptor charging, and described developing apparatus will be formed on an image development on the described photoreceptor, and described cleaning device is removed the remaining toner on the described photoreceptor;

A ground contact, this contact is used for contacting with a electric contact on the described image device main body, when described processing magazine installs on the described main body of described image device, make described photoreceptor be electrically grounded to described main body, described ground contact is located on the described framework of an axial side of described photoreceptor;

A magazine is abutted against parts, this is abutted against parts and is used for being close to the described laser optical path occluding device that is arranged on the described image device main body when described processing magazine is installed on the described main body, and laser optical path is opened, described being abutted against on the described framework of axial opposite side that parts are located at described photoreceptor;

Wherein, described processing magazine is installed on the described main body in removable mode on the direction that an axis direction with described photoreceptor intersects;

In the process that described processing magazine is installed on the described main body, described ground contact and the described parts that are abutted against contact with described electric contact and described laser optical path occluding device respectively.

19. image device as claimed in claim 18, wherein, described electric contact has a sheet spring.

20. equipment as claimed in claim 18, the parts (18d2) that also comprise the side in the cavity of a described end that is arranged on described photoreceptor, when the processing magazine is inserted in the cavity, described parts rouse tripper with a bullet top formula on the described processing magazine and are meshed, to open a bulging shutter on this magazine.

Images