CN101308344A - Color electrophotographic image forming apparatus - Google Patents
Color electrophotographic image forming apparatus Download PDFInfo
- Publication number
- CN101308344A CN101308344A CNA2008100992410A CN200810099241A CN101308344A CN 101308344 A CN101308344 A CN 101308344A CN A2008100992410 A CNA2008100992410 A CN A2008100992410A CN 200810099241 A CN200810099241 A CN 200810099241A CN 101308344 A CN101308344 A CN 101308344A
- Authority
- CN
- China
- Prior art keywords
- gear
- rotation
- revolving force
- rotating
- developing
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Landscapes
- Color Electrophotography (AREA)
- Dry Development In Electrophotography (AREA)
- Electrophotography Configuration And Component (AREA)
Abstract
A color electrophotographic image forming apparatus surely moves and stops each developing device supported by a rotary in a development position without an independent driving motor for rotating the rotary. By the rotation of the rotary, the V number of developing devices supported by the rotary are sequentially replaced and moved to the development position in which the developing device faces a photosensitive drum. A drive transmission mechanism is provided in which each time one of a M number claw portions of a trigger cam is disengaged from and engaged with a solenoid, the trigger cam makes a 1/M revolution, and once every 1/M revolution of the trigger cam, a driving force is transmitted to a rotary gear from a rotary drive gear which is rotated integrally with the trigger cam so that the rotary is stopped after rotated by an angle W which is an aliquot part of (360/V).
Description
Technical field
The present invention relates to color electrophotographic image forming apparatus, it has adopted the rotatable rotary supporting member (rotary body) that supports a plurality of developing apparatuss.
Background technology
Usually, known color electrophotographic image forming apparatus adopts the rotatable rotary supporting member (rotary body) that supports a plurality of developing apparatuss.In color electrophotographic image forming apparatus, known a kind of like this structure, wherein, pulse motor adopts independently with as the motor (referring to Japanese Patent Application Publication No.2005-227719) that rotating supporting member is rotated.Pulse motor is meshed with gear wheel in large diameter on being installed to rotating supporting member by a plurality of gears.By the rotation of gating pulse motor, the developing apparatus that is supported by rotating supporting member moves to the developing location of each developing apparatus towards photosensitive drums definitely.
As mentioned above, in traditional imaging device, control the stop position of rotating supporting member by the rotating speed of pulse motor of control controllable rotation speed.In addition, the pulse motor of controllable rotation speed and brushless electric machine price height, size are big, thereby cause that equipment cost increases, the space increases.
Summary of the invention
The object of the present invention is to provide a kind of color electrophotographic image forming apparatus, compare with the pulse motor that uses controllable rotation speed or the situation of brushless electric machine, described color electrophotographic image forming apparatus can obtain at low cost, and has improved space efficiency.
Another object of the present invention is to provide a kind of color electrophotographic image forming apparatus, wherein, is not installing under the situation that is used to make the motor that rotating supporting member rotates, and each developing apparatus that is supported by rotating supporting member can move to developing location definitely.
Another object of the present invention is to provide a kind of color electrophotographic image forming apparatus, and wherein, the member that revolving force is passed to (for example, delivery roll, fixing device and transfer belt) can utilize the revolving force of the motor that makes the rotating supporting member rotation to be rotated.
Another object of the present invention is to provide a kind of color electrophotographic image forming apparatus, compares with the pulse motor that uses controllable rotation speed or the situation of brushless electric machine, and described color electrophotographic image forming apparatus can size reduces and with the low cost manufacturing.
To achieve these goals, typical structure of the present invention is the color electrophotographic image forming apparatus that is used for forming image on recording medium, and it comprises:
Electrophotographic photosensitive element;
The rotatable rotary supporting member, it supports a plurality of developing apparatuss that are formed at the latent electrostatic image developing on the electrophotographic photosensitive element that are used to make;
Motor;
To pass to the revolving force transfer unit of rotating supporting member from the revolving force of motor, described revolving force transfer unit has and stops to receive from the halted state of the transmission of the revolving force of motor and receive duty from the transmission of the revolving force of motor, wherein, under described duty, the revolving force transfer unit receives from the revolving force of motor so that rotating supporting member is rotated, thus make described a plurality of developing apparatuss each sequentially move to the developing location that makes latent electrostatic image developing.
According to the present invention, a kind of color electrophotographic image forming apparatus can be provided, to compare with the pulse motor that uses controllable rotation speed or the situation of brushless electric machine, described color electrophotographic image forming apparatus can provide and improve space efficiency at low cost.
In addition, according to the present invention, can provide a kind of color electrophotographic image forming apparatus, wherein, even without the motor that is used to rotating supporting member is rotated, each developing apparatus that is supported by rotating supporting member also can move to developing location definitely.
In addition, according to the present invention, can provide a kind of color electrophotographic image forming apparatus, wherein, the member that revolving force is passed to (for example, delivery roll, fixing device and transfer belt) can be rotated by the revolving force that makes the motor that rotating supporting member rotates.
In addition, according to the present invention, can provide a kind of color electrophotographic image forming apparatus, compare with the situation of using pulse motor or brushless electric machine, described color electrophotographic image forming apparatus can size dwindle, and with the low cost manufacturing.
Further feature of the present invention will become apparent by the exemplary embodiment that hereinafter describes with reference to the accompanying drawings.
Description of drawings
Fig. 1 is the cut-open view as the structure of the laser beam printer of electrophotographic image forming example of the present invention;
Fig. 2 is the front view according to the structure of the drive transmission mechanism of the embodiment of the invention 1;
Fig. 3 is the right side view according to the drive transmission mechanism of the embodiment of the invention 1;
Fig. 4 is the front view according to another example of the drive transmission mechanism of the embodiment of the invention 1;
Fig. 5 is the front view according to the structure of the drive transmission mechanism of the embodiment of the invention 2;
Fig. 6 is the right side view according to the drive transmission mechanism of the embodiment of the invention 2;
Fig. 7 is the front view according to the structure of the drive transmission mechanism of the embodiment of the invention 3;
Fig. 8 is the right side view according to the drive transmission mechanism of the embodiment of the invention 3.
Embodiment
Hereinafter, describe the preferred embodiments of the present invention with reference to the accompanying drawings.Should be noted that size, material, structure and the positioned opposite of parts described in the embodiment can suitably change according to various situations and the structure of using equipment of the present invention below.Therefore, the following examples should not be construed as and limit the scope of the invention, but make except the situation of specified otherwise.
(embodiment 1)
Color electrophotographic image forming apparatus according to embodiment 1 is described below.In this case, the color laser beam printer that comprises four developing apparatuss describes as the example of color electrophotographic image forming apparatus.Fig. 1 is the cut-open view of color laser beam printer.
The imaging operation of color laser beam printer at first, is described.As shown in Figure 1, imaging device has electrophotographic photosensitive element 2 (hereinafter, being called photosensitive drums).Charging roller 3, exposure device 4, a V developing apparatus 18a are arranged to 18d (V is a natural number, is 4 in this example) and cleaning device 6 in photosensitive drums 2 arranged around.Charging roller 3 is the charging devices that make photosensitive drums 2 uniform charging.Exposure device 4 is by utilize laser beam irradiation photosensitive drums 2 to form the exposure device of electrostatic latent image according to image information.Developing apparatus 18a is to utilize the developer of respective color to make the visual developing apparatus of the sub-image that is formed on the photosensitive drums 2 by development to 18d.Notice that in embodiment 1, corresponding color is yellow, magenta, cyan and black.Developing apparatus 18a holds the yellow developer (not shown), and developing apparatus 18b holds pinkish red developer (not shown), and developing apparatus 18c holds the blue developer (not shown), and developing apparatus 18d holds the black reagent (not shown).Each developing apparatus 18a utilizes developer (not shown) separately to make the image development that is formed on the photosensitive drums 2 to 18d.In addition, cleaning device 6 is cleaning devices of removing the residual developer on the photosensitive drums 2.
At first, photosensitive drums 2 is synchronous with the rotation of intermediate transfer belt 7 (member that revolving force is passed to), so along the direction shown in the arrow (counterclockwise) rotation among Fig. 1.Charge equably by charging roller 3 in the surface of photosensitive drums 2, and photosensitive drums 2 is subjected to irradiation from exposure device 4 with the formation yellow image.By this process, yellow electrostatic latent image is formed on the photosensitive drums 2.
With the formation of yellow electrostatic latent image simultaneously, rotatable and can support described four developing apparatus 18a and rotate by utilizing drive transmission mechanism (describing after a while) center on a 105b to the rotary body (rotating supporting member) 105 of 18d.Therefore, rotary body 105 rotations, yellow developing apparatus 18a is arranged in the developing location 18Y (Fig. 4) of this yellow developing apparatus 18a towards photosensitive drums 2.Notice that rotary body 105 is rotatable rotary supporting members.In addition, a plurality of developing apparatus 18a equally spaced are supported on the rotary body 105 along its sense of rotation C (Fig. 2 and 4) to 18d.
But rotary body 105 also can not be equally spaced to support a plurality of developing apparatus 18a to 18d.For example, under the situation that the size of developing apparatus differs from one another, rotary body 105 only needs support each developing apparatus with the interval of deciding on the size of each developing apparatus.In this case, the angle rotation of rotary body 105 to decide on the size of each developing apparatus.
In addition, in order yellow developer to be attached to be formed on the sub-image on the photosensitive drums 2, to apply with photosensitive drums 2 for developer roll 182a and have the identical charging polarity and the voltage of same potential substantially.By this process, yellow developer is attached on the sub-image, thereby makes image development.That is to say that the yellow developer image is formed on the photosensitive drums 2.
After this, impose on the first transfer roll 81 that is arranged in intermediate transfer belt 7 inboards with the opposite polarity voltage of developer.Thereby the yellow developer image that is formed on the photosensitive drums 2 is transferred on the intermediate transfer belt 7 for the first time.
When the first transfer printing of aforesaid yellow developer image finished, magenta, cyan and black developing device (18b is to 18d) sequentially were positioned developing location 18Y place by the rotation of rotary body 105.Then, identical with the situation of yellow, the sub-image that sequentially carries out magenta, cyan and black forms, develops and first transfer printing.Therefore, four of respective color developer images superpose on intermediate transfer belt 7.
In this process, secondary transfer roller 82 keeps and intermediate transfer belt 7 non-contacting states.Meanwhile, the cleaning unit 9 that is used to remove the residual developer on the intermediate transfer belt 7 also keeps and intermediate transfer belt 7 contactless states.
Simultaneously, the sheet material S as recording medium is contained in the feeding box 51 that is arranged at the equipment bottom with stack manner.By the rotation of feed rolls 52, each sheet material S is from 51 feedings of feeding box, and is simultaneously separated from one another.Sheet material S is fed into a pair of registration roller 53 (member that a pair of delivery roll, revolving force are passed to).This delivers to part between intermediate transfer belt 7 and transfer roll 82 to registration roller 53 with the sheet material S of feeding.Simultaneously, transfer roll 82 keeps contacting (being in state shown in Figure 1) with intermediate transfer belt 7 pressure.
In addition, impose on transfer roll 82 with the opposite polarity voltage of developer.As mentioned above, in the developer image transfer printing together (secondary transfer printing) of four respective color of stack on the intermediate transfer belt 7 to the surface of feeding sheet material S.
Transfer printing has the sheet material S of developer image to be sent to fixing device 54 (photographic fixing instrument, the member that fixing device, revolving force are passed to) on it.In fixing device 54, sheet material S is heated pressurization.Then, the developer image fixing on sheet material S, thereby coloured image is formed on the sheet material S.After this, sheet material S is disposed to the discharge unit that is formed on the loam cake 55 through fixing device 54.
Now, with reference to Fig. 2 and 3, the drive transmission mechanism that makes rotary body 105 rotations is described.Fig. 2 is the front view of drive transmission mechanism structure, and Fig. 3 is the right side view that drive transmission mechanism shown in Figure 2 is observed from the right side.Notice that Fig. 2 does not show main body frame shown in Figure 3 171 and 172.In addition, Fig. 3 does not show photosensitive drums shown in Figure 22, intermediate transfer belt 7 and transfer roll 81.
Drive transmission mechanism shown in Fig. 2 and 3 makes rotary body 105 around axle 105b rotation.Therefore, drive transmission mechanism in turn makes four developing apparatus 18a that supported by rotary body 105 move to 18d and makes the developing location 18Y place of each developing apparatus towards photosensitive drums 2.
The structure of drive transmission mechanism is described hereinafter.
Driven wheel (drive member) 173 is rotatably supported with respect to imaging equipment body A.Driven wheel 173 receives the revolving force from motor M (drive source) simultaneously along a direction (being arrow A indicated direction among Fig. 2 in this example) rotation.Note, as long as can transmit revolving force, the revolving force transfer device that is used for passing to from the revolving force of motor M driven wheel 173 can suitably be constructed as follows: (revolving force transmission mechanism M1 Fig. 4) can divide for this reason to be used for that revolving force is passed to the gear etc. of a pair of registration roller (a pair of delivery roll) 53; Alternatively, (revolving force transmission mechanism M2 Fig. 4) can divide for this reason to be used for that revolving force is passed to the gear etc. of photosensitive drums 2.In addition, (revolving force transmission mechanism M4 Fig. 4) can divide for this reason to be used for that revolving force is passed to the gear etc. of fixing device 54.In embodiment 1, the revolving force transmission mechanism M3 (Fig. 3) by between two parties passes to driven wheel 173 from the revolving force of the uncontrollable commutator machine M of rotating speed.
In this case, revolving force transmission mechanism M1 is not limited to gear train to M4, but can be for for example member of band, as long as these members can transmit revolving force.
Simultaneously, revolving force was delivered to and member that rotate when the revolving force that receives from motor M is not limited to said structure.As the member that revolving force was delivered to, can be the delivery roll (registration roller) 53 that is used for transmitting sheet material S, be used for be transferred to developer image fixing on the sheet material S on sheet material fixing device 54 and photosensitive drums 2 at least any one.
In addition, the example that is used for the revolving force from motor M is passed to the revolving force transmission mechanism of the member that revolving force will be delivered to comprises revolving force transmission mechanism M1, M2 and M3.
In addition, motor M is not limited to commutator machine, but can be for example motor of stepper motor, direct-current commutating machine and brushless DC electric machine.In embodiment 1,, can use any motor more cheaper than pulse motor price with same output although can not control each rotating speed of motor.In addition, under situation about having with the identical output of pulse motor, the size of these motors is less than pulse motor.Therefore, in embodiment 1, effectively utilized the advantage of these motors.
The developing apparatus 18a that is supported by rotary body 105 has developer roll 182a respectively to 182d to 18d.Each developer roll 182a is made by elastic component and has a predetermined elasticity to 182d.Each developer roll 182a is keeping and is making image development when photosensitive drums 2 pressure contact to 182d.
Be provided with triggering cam 101 by parallel pin on the axle 108.Therefore, cam 101 and axle 108 rotation synchronously.Cam 101 has claw (bonding part) 101a that M (supposition M is a natural number, is 1 in this example) can engage with electrical operating device, which has (describing after a while).Note cam (rotating member) 101 and gear 104 unitary rotation.
Here with the example of extension spring as triggering spring 103, the one end is fixed on the equipment body A, and the other end can be rotatably set on the cam 101.Spring 103 is the biasing members (elastic component) that are used at cam sense of rotation (being direction shown in Fig. 2 arrow B in this embodiment) bias voltage cam 101.
Solenoid (engagement member) 102 is fixed on the equipment body A.Solenoid 102 will be arranged at claw (bonding part) the 101a locking on the cam 101.Utilize this structure,, prevented that cam 101 from rotating along direction shown in the arrow B (Fig. 2) by the elasticity of spring 103.In this case, solenoid 102 engages separably with claw (bonding part) 101a on being arranged at cam 101, so that stop the rotation of cam 101.
In addition, can voltage be imposed on solenoid 102 from control module C (Fig. 4) as control device.Solenoid 102 is to apply the electrical operating device, which has (engagement member) that opens/close according to voltage.Applying voltage by control module C to solenoid 102 causes solenoid 102 and claw 101a to separate.Therefore, cam 101 rotates along direction shown in the arrow B by the elasticity of spring 103.When the voltage that imposes on solenoid 102 cut off, solenoid 102 engaged with claw 101a.Like this, rotation that can adjustment cam 101.
In addition, axle 108 is provided with local no gear 106.Local no gear 106 is fixed to the side of cam 101.That is to say that in embodiment 1, local no gear 106 and triggering cam 101 are one.In addition, local no gear 106 is not complete gear.As shown in Figure 2, under the situation that the rotation of cam 101 is regulated by solenoid 102, the tooth of local no gear 106 is partly cut (no toothed portion), so that do not engage with gear 173.That is to say, gear 106 has the gear parts 106a that can engage with gear 173, and have M no toothed portion 106b (being 1 in this example), described no toothed portion under solenoid 102 and situation that the claw 101a that triggers cam 101 engages towards driven wheel 173.Gear (the second transmission gear member) 106 revolving forces with gear (drive member) 173 pass to cam 101, described gear 173 when the revolving force that receives from motor M along a direction rotation.
Therefore, cam 101, driven wheel 104, local no gear 106 and axle 108 are integral with one another, thereby around axle 108 rotations.Drive transmission mechanism is made of above-mentioned member.
In addition, in this drive transmission mechanism, natural number X, M, Y and V are set at, and to make (X/M) be the aliquot part of (Y/V).
In this example, when applying voltage for solenoid 102, the claw 101a and the solenoid 102 that trigger cam 101 break away from.Therefore, eliminated the constraining force of the solenoid 102 that acts on the cam 101, so cam 101 rotates along direction shown in the arrow B by the pulling force (biasing force, elastic force) of spring 103.Therefore, do not have gear 106 rotations with the part that cam 101 is synchronous, thereby the gear parts 106a of local no gear 106 is engaged with driven wheel 173.That is to say, apply voltage for solenoid 102 and cause drive transmission mechanism to rotate synchronously along direction shown in the arrow B among Fig. 2 thereupon.In addition, suppose that it is t1 that drive transmission mechanism revolves the required time of turning around, the time of applying voltage for solenoid 102 is t2, and the response time of solenoid 102 is 0, and when satisfying t1＞t2, drive transmission mechanism revolves and turns around.Therefore, cam 101 is locked by solenoid 102, thereby stops operating.That is to say that whenever the claw 101a and solenoid 102 disengagings of cam 101, cam 101 is along the rotation of direction shown in arrow B 1/M circle (being 1 circle in this example).And then rotation stops.Further, when solenoid 102 engaged with claw 101a, cam 101 stopped the rotation.
Simultaneously, gear 104 engages with gear 105a.Therefore, according to the rotation of gear 106, rotary body 105 also rotates along direction shown in the arrow C (Fig. 2).In this case, the developing apparatus of four kinds of colors (18a is to 18d) moves to developing location 18Y (situation shown in Figure 2) successively.For this reason, the number of teeth Y that supposes gear 105a is four times of number of teeth X of driven wheel 104.For example, the number of teeth Y of gear 105a is 80, and then the number of teeth X of driven wheel 104 is 20.Notice that at developing location 18Y, developer roll 182 keeps contacting with photosensitive drums 2 pressure.
In this case, when give solenoid 102 apply voltage reach time t2 (＜t1) time, next developing apparatus 18b is rotated body 105 and moves to developing location 18Y and stop at this.In addition, when after developing apparatus 18b develops, developing by developing apparatus 18c, voltage impose on once more solenoid 102 reach time t2 (＜t1).Therefore, next developing apparatus 18c is rotated body 105 and moves to developing location 18Y and stop at this.
Simultaneously, as mentioned above, the number of teeth Y that supposes gear 105a is four times of number of teeth X of driven wheel 104.But, can adopt any number, as long as multiple is 4 natural several times.For example, the number of teeth Y that supposes gear 105a is 120, and then the number of teeth X of driven wheel 104 is 15 (120: 15=8: 1,8 times).In this case, time enough at interval under, give solenoid 102 application time t2 (＜t1) voltage for twice; Alternatively, under the condition that satisfies t1＜t2＜2 * t1, give the voltage of solenoid 102 application time t2.Therefore, developing apparatus 18a can sequentially move to developing location 18Y to 18d.And then developing apparatus 18a can stop at developing location 18Y to 18d.Note, apply voltage for solenoid 102 and control by control module C (Fig. 4).
In addition, support developing apparatus 18a stops in the following way to the rotation of the rotary body 105 of 18d: at first, the voltage that imposes on solenoid 102 disconnects, thereby solenoid 102 is engaged with claw 101a.Subsequently, as shown in Figure 2, rotary body 105 does not have gear 106 in the part no toothed portion 106b stops the rotation towards the position of driven wheel 173.
To make (X/M) be that the drive transmission mechanism of the aliquot part of (Y/V) can be constructed as follows to nature numerical value by being set at like that as mentioned above: that is to say, whenever cam 101 rotation 1/M circles, revolving force (driving force) passes to gear 105a from the driven wheel 104 with the rotation of cam 101 one.Like this, rotary body 105 can stop after having rotated angle W, and described angle W is the aliquot part of (360/V).
That is to say, in embodiment 1, can independent setting make rotary body 105 rotations so that accurately determine the motor of the controllable rotation speed of rotary body 105 positions.In embodiment 1, even in the structure of the motor that does not have independently to be provided with controllable rotation speed, the developing apparatus that is installed on the rotary body 105 also can move to developing location definitely, stops at this subsequently.That is to say, can realize that size reduces the equipment that reduces with cost.In addition, even without the motor of the independent controllable rotation speed that is provided with, each developing apparatus that is installed on the rotary body also can move to developing location definitely, stops at this subsequently.
In addition, as mentioned above, the number of teeth X of the number of teeth Y of gear 105a and driven wheel 104 is set at 4N (N be 2 or bigger natural number).Therefore, except each developer roll 182a to 182d keep with photosensitive drums 2 pressure position contacting (developing location), rotary body 105 can stop at each developer roll 182a to 182d not with photosensitive drums 2 position contacting places.
That is to say that in embodiment 1, rotary body 105 stops around axle 105b from developing location 18Y rotation 45 degree.Therefore, developing apparatus 18a each developer roll 182a that can stop at them to 18d is to holding fix 18X place that 182d does not contact with photosensitive drums 2.Fig. 4 has shown that rotary body 105 rotations 45 degree stop, and developing apparatus 18a moves to holding fix 18X to stop at this state from developing location 18Y subsequently.
In this case, developer roll 182a to 182d can not with situation that photosensitive drums 2 contacts under stand-by.Therefore, even outside developing process, can prevent that also photosensitive drums 2 or developer roll 182a from contacting to a certain degree the wearing and tearing that cause owing to developer roll with the pressure of photosensitive drums 2 to 182d.
In addition, although supposed four look developing apparatuss here, this equipment also can be three looks or two colour patterns.In this case, the number of teeth Y of gear 105a is set at the number of teeth X of rotary body driven wheel 104 2 * P times (P is a natural number) or 3 * Q times (Q is a natural number), thereby can obtain identical effect.This is suitable equally under the situation of the five colors or more color types.Incidentally, under the situation of trichroism and two colour patterns, there are three developing apparatuss and two developing apparatuss to be installed on the rotary body 105 respectively.
In addition, Fig. 2 has shown the single claw 101a (bonding part) that triggers cam 101.Yet as shown in Figure 4, uniformly-spaced (equal angles) is provided with a plurality of claw 101a.For example, Fig. 4 has shown two the no toothed portion 106b1 and the 106b2 of two claw 101a and 101b and local no gear 106, and they are correspondingly setting each other.When the ratio of the number of teeth Y of the number of teeth X of driven wheel 104 and driven wheel 105a was 1: 2, rotary body 105 can rotate 1/4 circle to be stopped.That is to say that four look developing apparatuss sequentially rotate to developing location so that stop at this.
Here, the number of teeth of supposing driven wheel 104 is X, and the number of teeth of rotary body gear 105a is Y, and the number of the claw 101a of cam 101 is M.Therefore, rotary body 105 can be rotated in and satisfy 360/ (angle (spacing) W that obtains under X * M/Y)=W ° the condition and stopping.Notice that stop at developing location in order to make each V look developing apparatus, W should be the aliquot part of (360/V).
As mentioned above, in embodiment 1, drive transmission mechanism has revolving force transfer unit X, and this unit can reach and stop from the halted state of the transmission of the revolving force of motor M and carry out duty from the transmission of the revolving force of motor M.In working order down, when the revolving force of receiving from motor M, revolving force transfer unit X makes rotary body 105 rotation scheduled volumes, so that developing apparatus 18a sequentially moves to developing location 18Y to 18d.Here, revolving force transfer unit X comprises gear 173, gear 106, gear 104, gear 105a, cam 101, solenoid 102 and spring 103.
Notice that under development state as shown in Figure 2, if voltage does not impose on solenoid 102, rotary body 105 is regulated so that do not rotate along direction shown in the arrow C (Fig. 2) by solenoid 102.In addition, cam 101 is also biased in the opposite direction with side shown in the arrow C by the elasticity edge of triggering spring 103.Therefore, rotary body 105 can not rotate under the situation of the counteracting power that does not have elastic force.Certainly, spring 103 applies enough elastic force to prevent that rotary body 105 is along rotating in the opposite direction with side shown in the arrow C.That is to say that under development state shown in Figure 2, rotary body 105 is in stationary state, thereby can develop reliably.
(embodiment 2)
Next, with reference to Fig. 5 and 6, the another kind of drive transmission mechanism that is used to make rotary body 105 rotations is described.Fig. 5 is the front schematic view of drive transmission mechanism structure, and Fig. 6 is the right side view that drive transmission mechanism shown in Figure 5 is observed from the right side.Notice that Fig. 5 does not show main body frame shown in Figure 6 171 and 172.Simultaneously, Fig. 6 does not show photosensitive drums shown in Figure 52, transfer belt 7 and transfer roll 81.Note, in embodiment 2 and 3, no longer to have with embodiment 1 as mentioned above in the member of identical function be described and show.
In drive transmission mechanism according to embodiment 2, different with embodiment 1, increased torque transmitter 111, shifting slide gear 112 has replaced local no gear 106, and has omitted triggering spring 103.
The example of torque transmitter 111 comprises torque limiter.Torque transmitter 111 rotatably is provided with respect to axle 108, and comprises fixation side (fixed part) 111a and slippage side (slippage part) 111b.Fixation side 111a engages with shifting slide gear 112, so that rotate synchronously with slide gear 112.Slippage side 111b engages with triggering cam 101, so that rotate synchronously with triggering cam 101.Although fixation side 111a and slippage side 111b be rotation synchronously with one another usually, fixation side 111a and slippage side 111b slippage when the moment of torsion that produces between fixation side 111a and slippage side 111b is not less than predetermined torque T, and rotation no longer synchronously with one another.
As mentioned above, because the revolving force that shifting slide gear 112 receives from driven wheel 173, so shifting slide gear 112 rotates along direction shown in (among Fig. 5) arrow B with fixation side 111a.Simultaneously, slippage side 111b, cam 101, driven wheel 104 and axle 108 receive revolving force, so that along the rotation of direction shown in (among Fig. 5) arrow B.Yet the claw 101a of cam 101 is by solenoid 102 lockings.Therefore, the fixation side 111a of torque transmitter 111 and slippage side 111b are in slip state, and the revolving force that passes to the shifting slide gear 112 of cam 101 interrupts, and makes drive transmission mechanism stop the rotation.
In this state, when applying voltage for solenoid 102, claw 101a and solenoid 102 break away from.Then, fixation side 111a and slippage side 111b rotation synchronized with each other.Therefore, the revolving force of shifting slide gear 112 passes to cam 101, thereby makes the drive transmission mechanism rotation.That is to say that cam 101, driven wheel 104, axle 108, torque transmitter 111 and shifting slide gear 112 rotate along direction shown in the arrow B (Fig. 5) each other integratedly.Therefore, rotary body 105 can rotate.Operation subsequently is identical with embodiment 1.
As mentioned above, in embodiment 2, drive transmission mechanism has revolving force supply unit Y, and this unit can reach and stop from the halted state of the transmission of the revolving force of motor M and carry out duty from the transmission of the revolving force of motor M.In working order down, when the revolving force that receives from motor M, revolving force transfer unit Y makes rotary body 105 rotation scheduled volumes, so that developing apparatus 18a sequentially moves to developing location 18Y to 18d.Here, revolving force transfer unit Y comprises gear 173, gear 112, gear 104, gear 105a and solenoid 102.
In embodiment 2, can obtain the effect identical with embodiment 1.
In addition, when the moment of torsion that between fixation side 111a and slippage side 111b, applies greater than predetermined torque T, fixation side 111a and slippage side 111b slippage.Therefore, though at rotary body 105 because under the inner situation of stopping up foreign matter and can not rotating, impose on solenoid 102 so that during rotary body 105 rotations at voltage, fixation side 111a and slippage side 111b slippage.For this reason, set driving torque (torque),, thereby prevented that equipment body is damaged so that it is not transmitted from the drive source (not shown) greater than T.
(embodiment 3)
Next, with reference to Fig. 7 and 8, the another kind of drive transmission mechanism that is used to make rotary body 105 rotations is described.Fig. 7 is the front schematic view of drive transmission mechanism structure, and Fig. 8 is the right side view that drive transmission mechanism shown in Figure 7 is observed from the right side.Notice that Fig. 8 does not show photosensitive drums, intermediate transfer belt, first transfer roll etc.In addition, in embodiment 3, although rotary body 105 along with embodiment 1 and 2 in side's rotation in the opposite direction, suppose aspect development, not have problems.
Drive transmission mechanism shown in Fig. 7 and 8 makes rotary body 105 rotations, thereby four developing apparatus 18a that supported by rotary body 105 are sequentially switched to 18d, so that move to the developing location of each developing apparatus towards photosensitive drums 2.The structure of this drive transmission mechanism has been described hereinafter.
In addition, the claw 121a of cam 121 to four no toothed portion 126b of 121d and gear 126 be set in the corresponding position of developing location on.
Triggering lever 123 is the leverage components that engage with the leader 122a of bias voltage cam 122.The axle 125 that lever 123 is compassingly set on the equipment body rotatably is provided with.
The revolving force that rotary body driven wheel (drive member) 127 receives from the drive source (not shown), and along constantly rotation of a direction (direction shown in the arrow F among Fig. 7).Notice that as mentioned above, as long as the drive source (not shown) has revolving force, drive source is suitable for when obtaining in the following manner: the gear of driving delivery roll (not shown) etc. can be divided for this reason; Alternatively, the gear that drives photosensitive drums 2 can be divided for this reason.
Above-mentioned member constitutes drive transmission mechanism.Whenever the claw 121a of cam 121 when 121d and solenoid 102 break away from, with cam 121 synchronously the gear parts 126a of the gears 126 of rotation engage with driven wheel 127.Then, it is angle W of the aliquot part of (360/V) that drive transmission mechanism makes rotary body 105 rotations, and rotary body 105 is stopped.
Under situation shown in Figure 7, solenoid 102 engages with the claw 121a of cam 121.Utilize this structure, the no toothed portion 126b of gear 126 is positioned to towards driven wheel 127, makes revolving force not pass to gear 126.Therefore, the rotation of drive transmission mechanism stops.In addition, under situation shown in Figure 7, developer roll 182 elasticity keep contacting with photosensitive drums (not shown) pressure.
Under this situation, when applying voltage for solenoid 102 to reach the schedule time, the claw 121a of cam 121 and solenoid 102 disengagings.Therefore, trigger elastic force (biasing force) that lever 123 utilizes biasing spring 124 along direction shown in the arrow D (Fig. 7) to bias voltage cam 122 bias voltages.Therefore, cam 121 rotations make the gear parts 126a of gear 126 engage with driven wheel 127, rotate along direction one shown in the arrow D thereby make by the bias voltage cam 122, cam 121 and the rotary body 105 that trigger lever 123 bias voltages.Then, gear parts 126a engages with driven wheel 127, rotates to next no toothed portion 126b subsequently.After this, cam 121 makes bias voltage cam 122, cam 121 and rotary body 105 stop by solenoid 102 lockings.That is to say that each developing apparatus subsequently is rotated body 105 and moves to developing location so that stop.
As mentioned above, in embodiment 3, solenoid 102 (engagement member) engages with claw (bonding part) 121a, thereby the rotation of cam 121 (rotating member) is stopped.Utilize this structure, the halted state that the revolving force transmission of drive transmission mechanism can reach to be made from gear (drive member) 127 to gear (second transmits gear part) 126 stops and making gear 126 receive the duty that is rotated when revolving force from gear 127 transmits according to the rotation of cam 121.In addition, in working order down, rotary body 105 rotation scheduled volumes, thus make developing apparatus 18a sequentially move to developing location 18Y to 18d.
In addition, in embodiment 3, drive transmission mechanism has revolving force transfer unit Z, and this unit can reach and stop from the halted state of the transmission of the revolving force of motor M and carry out duty from the transmission of the revolving force of motor M.In working order down, when the revolving force that receives from motor M, revolving force transfer unit Z makes rotary body 105 rotation scheduled volumes, so that developing apparatus 18a sequentially moves to developing location 18Y to 18d.Here, revolving force transfer unit Z comprises gear 127, gear 126, cam 121, cam 122 and solenoid 102.
Even utilize said structure, also can obtain and embodiment 1 and 2 identical effects.That is to say, even under the situation of the drive motor that does not have the independent controllable rotation speed that is provided with, also can control the rotation of rotary body.
Notice, in embodiment 3, sequentially move that four claw 121a arrange to 126d difference equal angles to 121d and four no toothed portion 126a in order to make four developing apparatuss with respective color.Yet these members only need to be provided with in 4 * N part (N is a natural number).In addition, as described in embodiment 1 and 2, these members only need to be provided with in 3 * N part (N is a natural number) under the situation of three kinds of colors, only need to be provided with in 2 * N part (N is a natural number) under the situation of two kinds of colors.This also is suitable under the situation of five kinds or more colors.
In aforesaid embodiment 1 to 3, solenoid 102 is controlled by unit C.
In addition, in embodiment 1 to 3, the member that is used to transmit revolving force is not limited to gear.The example of the gear part that is suitable for using comprises gear, cog belt and the driving-belt that can transmit revolving force.
Further, in embodiment 1 to 3,, thereby simplify the control of motor even motor M also continues rotation under halted state.
In addition, in embodiment 1 to 3, not only make rotary body 105 rotations from the revolving force of motor M, and the member that revolving force is passed to after passing to it, rotates revolving force.In this case, the example of the member that is passed to of revolving force comprises the delivery roll (registration roller) 53 that is used for transmitting sheet material S, is used to make the fixing device 54 of the developer image fixing that is transferred on the sheet material S and is used for sending sheet material S to photosensitive drums 2 so that make at least a of the developer image that is formed on the photosensitive drums 2 transfer belt 7 to the sheet material S.
In addition, in each embodiment, printer is as the example of electrophotographic image forming.But, the invention is not restricted to this.The present invention is applicable to other electrophotographic image forming, for example duplicating machine, facsimile recorder or have the multi-purpose machine of the combination function of these machines.In addition, in imaging device,, be superimposed upon over each other to be transferred on the intermediate transfer member by adopting intermediate transfer member (band) as example the developer image sequence of each color, subsequently, the developer image that remains on the intermediate transfer member is transferred on the recording medium together.But, the invention is not restricted to this.The present invention wherein, by adopting the recording medium bearing carrier, is superimposed upon over each other to be transferred on the recording medium that is carried on the recording medium bearing carrier also applicable to such electrophotographic image forming the developer image sequence of every kind of color.Can obtain identical effect by applying the present invention to this imaging device.
Although invention has been described with reference to exemplary embodiment, should be appreciated that to the invention is not restricted to disclosed exemplary embodiment.The scope of following claim is interpreted as the explanation of broad sense, so that contain all this class modification and equivalent structure and functions.
Claims (14)
1. color electrophotographic image forming apparatus that is used on recording medium forming image, described color electrophotographic image forming apparatus comprises:
Electrophotographic photosensitive element;
The rotatable rotary supporting member, it supports a plurality of developing apparatuss, and these a plurality of developing apparatuss are used to make the latent electrostatic image developing that is formed on the electrophotographic photosensitive element;
Motor;
To pass to the revolving force transfer unit of rotating supporting member from the revolving force of motor, described revolving force transfer unit has and stops to receive from the halted state of the transmission of the revolving force of motor and receive duty from the transmission of the revolving force of motor, wherein, in described duty, the revolving force transfer unit receives from the revolving force of motor so that rotating supporting member is rotated, thus make described a plurality of developing apparatuss each sequentially move to the developing location that makes latent electrostatic image developing.
2. color electrophotographic image forming apparatus that is used on recording medium forming image, described color electrophotographic image forming apparatus comprises:
Electrophotographic photosensitive element;
The rotatable rotary supporting member, it supports a plurality of developing apparatuss, and these a plurality of developing apparatuss are used to make the latent electrostatic image developing that is formed on the electrophotographic photosensitive element;
The gear part of rotating supporting member, itself and rotating supporting member are rotated integratedly;
The first transmission gear member, it engages with the gear part of rotating supporting member;
Rotating member, itself and the first transmission gear member one are rotated;
Engagement member, it engages separably with bonding part on being arranged on rotating member, is used to make rotating member to stop the rotation; With
The second transmission gear member, it is used for will passing to rotating member along the rotation of driving component power of a direction rotation when the revolving force that receives from motor,
Wherein, described color electrophotographic image forming apparatus have engagement member engage with the bonding part so that the rotation of rotating member when stopping the second transmission gear member stop to receive halted state from the transmission of rotation of driving component power, duty with the rotation when receiving of the second transmission gear member when rotating member rotates from the transmission of rotation of driving component power, wherein, under described duty, rotating supporting member is rotated so that each of described a plurality of developing apparatuss sequentially moves to the developing location that makes latent electrostatic image developing.
3. color electrophotographic image forming apparatus as claimed in claim 2, wherein, motor continues rotation under described halted state.
4. color electrophotographic image forming apparatus as claimed in claim 3, wherein, drive member is rotated when the revolving force that receives from motor, the gear part of revolving force by the second transmission gear member and rotating supporting member passes to rotating supporting member so that the rotating supporting member rotation, and pass to member that revolving force is passed to so that the member rotation that revolving force is passed to from the revolving force of motor.
5. color electrophotographic image forming apparatus as claimed in claim 4, wherein, the member that is passed to of revolving force comprise the delivery roll that is used for conveying recording medium, be used for be transferred to developer image fixing on the recording medium to the recording medium fixing device and at least one of electrophotographic photosensitive element.
6. color electrophotographic image forming apparatus as claimed in claim 3, wherein, the second transmission gear member is local no gear, drive member is a gear, engagement member is an electrical operating device, which has, the no gear in described part have can with as the gear parts of the gear engagement of drive member and under electrical operating device, which has and state that the bonding part of rotating member engages towards M no toothed portion as the gear of drive member, wherein, described color electrophotographic image forming apparatus comprises along the elastic component of sense of rotation bias voltage rotating member, wherein, when bonding part and electrical operating device, which has disengaging, rotating member rotation so that the gear parts of local no gear by elastic component elastic force and as the gear engagement of drive member, and the revolving force as the gear of drive member passes through gear parts, the gear part of rotating supporting member and the first transmission gear member make the rotating supporting member rotation, and wherein, when electrical operating device, which has engages with the bonding part, the rotation of the position rotating member of the no toothed portion that does not have gear in the part towards as the gear of drive member the time stops, and makes that the revolving force as the gear of drive member does not pass to the second transmission gear member.
7. color electrophotographic image forming apparatus that is used on recording medium forming image, described color electrophotographic image forming apparatus comprises:
Electrophotographic photosensitive element;
The rotatable rotary supporting member, it supports a plurality of developing apparatuss, and these a plurality of developing apparatuss are used to make the latent electrostatic image developing that is formed on the electrophotographic photosensitive element;
Motor;
The member that revolving force is passed to, it rotates when the revolving force that receives from motor;
The revolving force transmission mechanism, it will pass to the member that revolving force is passed to from the revolving force of motor; With
To pass to the revolving force transfer unit of rotating supporting member from the revolving force of motor, described revolving force transfer unit has and stops to receive from the halted state of the transmission of the revolving force of motor and receive duty from the transmission of the revolving force of motor, wherein, in described duty, the revolving force transfer unit receives from the revolving force of motor so that rotating supporting member is rotated, thus make described a plurality of developing apparatuss each sequentially move to the developing location that makes latent electrostatic image developing.
8. color electrophotographic image forming apparatus as claimed in claim 7, wherein, motor continues rotation under described halted state.
9. color electrophotographic image forming apparatus as claimed in claim 8, wherein, the member that is passed to of revolving force comprise the delivery roll that is used for conveying recording medium, be used for be transferred to developer image fixing on the recording medium to the recording medium fixing device and at least one of electrophotographic photosensitive element.
10. color electrophotographic image forming apparatus that is used on recording medium forming image, described color electrophotographic image forming apparatus comprises:
Electrophotographic photosensitive element;
Rotatable rotary supporting member, its support are used for and will be formed on V (V is a natural number) developing apparatus of the latent electrostatic image developing on the electrophotographic photosensitive element;
Electrical operating device, which has;
Rotating member, it has M the bonding part (M is a natural number) that can engage with electrical operating device, which has; With
Drive transmission mechanism, it comprises the transmission gear of (X is a natural number) that has X tooth and the rotating supporting member gear with Y tooth (Y is a natural number), revolving force is delivered to described transmission gear from the drive member along a direction rotation, described rotating supporting member gear engage with transmission gear in case with the rotating supporting member unitary rotation, the relation that it is the aliquot part of (Y/V) that described each natural value is set at satisfied (X/M)
Wherein, when one of bonding part breaks away from electrical operating device, which has, rotating member rotation 1/M circle, and when in a single day every rotation 1/M encloses, revolving force is passed to the rotating supporting member gear from the transmission gear with the rotation of rotating member one, and rotating supporting member stops after being the angle W of aliquot part of (360/V) having rotated, thus make described a plurality of developing apparatuss each sequentially move to the developing location that makes latent electrostatic image developing.
11. color electrophotographic image forming apparatus as claimed in claim 10, wherein, described drive transmission mechanism comprises:
Local no gear, its have the gear parts that can engage with drive member and when engaging one of in the bonding part of electrical operating device, which has and rotating member towards M no toothed portion of drive member; With
Elastic component, it is along sense of rotation bias voltage rotating member, and
Wherein, when one of bonding part broke away from electrical operating device, which has, rotating member rotation was so that the gear parts of local no gear passes through the elastic force of elastic component engages with drive member; With
When electrical operating device, which has engaged with one of bonding part, the rotation of the position rotating member of one of the no toothed portion that does not have gear in the part during towards drive member stopped.
12. color electrophotographic image forming apparatus as claimed in claim 10, wherein, described drive transmission mechanism comprises:
Shifting slide gear, it engages with described drive member; With
Torque transmitter, it has the fixed part that engages with shifting slide gear and when engaging with rotating member and the fixed part slippage part of rotation synchronously, wherein, when generation was not less than the moment of torsion of predetermined torque between fixed part and slipping part branch, fixed part and the slippage of slippage part were so that rotation synchronously with one another;
Wherein, when one of bonding part broke away from electrical operating device, which has, fixed part and the rotation synchronously with one another of slippage part made the revolving force of shifting slide gear pass to rotating member so that rotating member rotates, and
When electrical operating device, which has engages with one of bonding part, the slippage each other of fixed part and slippage part, with the revolving force of blocking-up shifting slide gear in order to avoid revolving force is passed to rotating member, thereby make the rotation of rotating member stop.
13. a color electrophotographic image forming apparatus that is used for forming image on recording medium, described color electrophotographic image forming apparatus comprises:
Electrophotographic photosensitive element;
Rotatable rotary supporting member, its support are used to make V (V the is a natural number) developing apparatus that is formed on the latent electrostatic image developing on the electrophotographic photosensitive element;
Electrical operating device, which has;
Rotating member, it has V the bonding part that can engage with electrical operating device, which has, and rotates integratedly with rotating supporting member;
The drive transmission mechanism that comprises the rotating supporting member gear, described rotating supporting member gear have the gear parts that can engage with drive member along the rotation of direction and under electrical operating device, which has and state that the bonding part engages towards V no toothed portion of drive member, described rotating supporting member gear and rotating supporting member are rotated integratedly, and bonding part and no toothed portion are set to respectively and the corresponding position of developing location;
Wherein, when one of bonding part breaks away from electrical operating device, which has, with rotating member synchronously the gear parts and the drive member of the rotating supporting member gear of rotation engage, make the rotating supporting member rotation be (360/V) aliquot part angle W and stop.
14. color electrophotographic image forming apparatus as claimed in claim 13, wherein, described drive transmission mechanism comprises:
Guide member, itself and rotating member rotate synchronously, and have V leader;
Leverage component, it engages with the leader of guide member; With
Biasing member, it is used for the bias voltage leverage component so that rotating member is biased along sense of rotation,
Wherein, when one of bonding part broke away from electrical operating device, which has, along the sense of rotation bias voltage, and the rotating member rotation made the gear parts of rotating supporting member gear engage with drive member to the biasing force of leverage component by biasing member with guide member, and
When electrical operating device, which has engages with one of bonding part, stop in the rotation of the position rotating member of one of no toothed portion of rotating supporting member gear during towards drive member.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2007128983 | 2007-05-15 | ||
| JP2007-128983 | 2007-05-15 | ||
| JP2008-112000 | 2008-04-23 | ||
| JP2008112000A JP4267052B2 (en) | 2007-05-15 | 2008-04-23 | Color electrophotographic image forming apparatus |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101308344A true CN101308344A (en) | 2008-11-19 |
| CN101308344B CN101308344B (en) | 2010-08-04 |
Family
ID=40124834
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100992410A Expired - Fee Related CN101308344B (en) | 2007-05-15 | 2008-05-15 | Color electrophotographic image forming apparatus |
Country Status (2)
| Country | Link |
|---|---|
| JP (1) | JP4267052B2 (en) |
| CN (1) | CN101308344B (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989055A (en) * | 2009-07-30 | 2011-03-23 | 佳能株式会社 | Driving device and image forming apparatus |
| CN102298283A (en) * | 2010-06-25 | 2011-12-28 | 富士施乐株式会社 | Image forming apparatus |
| CN102576204A (en) * | 2010-08-17 | 2012-07-11 | 佳能株式会社 | Image forming device |
| CN103946753A (en) * | 2011-11-17 | 2014-07-23 | 佳能株式会社 | Driving force transmission apparatus and image forming apparatus using the same |
| CN107239029A (en) * | 2016-03-28 | 2017-10-10 | 兄弟工业株式会社 | Delevoping cartridge |
| CN110308634A (en) * | 2013-09-12 | 2019-10-08 | 佳能株式会社 | Box, drum unit, power receiving part and flange unit |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP5339130B2 (en) * | 2009-01-19 | 2013-11-13 | 富士ゼロックス株式会社 | Image forming apparatus |
| JP2011047993A (en) | 2009-08-25 | 2011-03-10 | Fuji Xerox Co Ltd | Developing device and image forming apparatus |
| JP5594073B2 (en) * | 2010-11-09 | 2014-09-24 | 富士ゼロックス株式会社 | Developing device and image forming apparatus |
| JP7073132B2 (en) * | 2018-02-14 | 2022-05-23 | キヤノン株式会社 | Drive device and image forming device |
-
2008
- 2008-04-23 JP JP2008112000A patent/JP4267052B2/en not_active Expired - Fee Related
- 2008-05-15 CN CN2008100992410A patent/CN101308344B/en not_active Expired - Fee Related
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101989055B (en) * | 2009-07-30 | 2014-04-02 | 佳能株式会社 | Driving device and image forming apparatus |
| US8428494B2 (en) | 2009-07-30 | 2013-04-23 | Canon Kabushiki Kaisha | Driving device and image forming apparatus |
| CN101989055A (en) * | 2009-07-30 | 2011-03-23 | 佳能株式会社 | Driving device and image forming apparatus |
| CN102298283A (en) * | 2010-06-25 | 2011-12-28 | 富士施乐株式会社 | Image forming apparatus |
| CN102298283B (en) * | 2010-06-25 | 2015-04-22 | 富士施乐株式会社 | Image forming apparatus |
| US8670695B2 (en) | 2010-08-17 | 2014-03-11 | Canon Kabushiki Kaisha | Image forming apparatus |
| CN102576204B (en) * | 2010-08-17 | 2015-04-15 | 佳能株式会社 | Image forming device |
| CN102576204A (en) * | 2010-08-17 | 2012-07-11 | 佳能株式会社 | Image forming device |
| CN103946753A (en) * | 2011-11-17 | 2014-07-23 | 佳能株式会社 | Driving force transmission apparatus and image forming apparatus using the same |
| CN103946753B (en) * | 2011-11-17 | 2017-08-08 | 佳能株式会社 | Drive force transfering device and the imaging device using the device |
| CN107253623A (en) * | 2011-11-17 | 2017-10-17 | 佳能株式会社 | Drive force transfering device and the imaging device using the device |
| CN107253623B (en) * | 2011-11-17 | 2019-05-31 | 佳能株式会社 | Driving force transmission device and the imaging device for using the device |
| CN110308634A (en) * | 2013-09-12 | 2019-10-08 | 佳能株式会社 | Box, drum unit, power receiving part and flange unit |
| US11199807B2 (en) | 2013-09-12 | 2021-12-14 | Canon Kabushiki Kaisha | Cartridge and drum unit for electrophotographic image forming apparatus |
| US11579561B2 (en) | 2013-09-12 | 2023-02-14 | Canon Kabushiki Kaisha | Cartridge and drum unit for electrophotographic image forming apparatus |
| US12066786B2 (en) | 2013-09-12 | 2024-08-20 | Canon Kabushiki Kaisha | Cartridge and drum unit for electrophotographic image forming apparatus |
| CN107239029A (en) * | 2016-03-28 | 2017-10-10 | 兄弟工业株式会社 | Delevoping cartridge |
| US10649395B2 (en) | 2016-03-28 | 2020-05-12 | Brother Kogyo Kabushiki Kaisha | Developing cartridge comprising mechanism for information detection |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2008310302A (en) | 2008-12-25 |
| CN101308344B (en) | 2010-08-04 |
| JP4267052B2 (en) | 2009-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101308344B (en) | Color electrophotographic image forming apparatus | |
| CN101266432B (en) | Image forming apparatus and power transmission device thereof | |
| US8027618B2 (en) | Color electrophotographic image forming apparatus including a rotary drive transmission mechanism | |
| CN100524068C (en) | Drive connection mechanism, and image forming apparatus having the drive connection mechanism | |
| US8900088B2 (en) | Clutch mechanism and image forming apparatus including same | |
| CN101661241B (en) | Image forming apparatus | |
| JP6136835B2 (en) | Drive switching device and image forming apparatus | |
| US7983600B2 (en) | Image forming apparatus | |
| JPH04348368A (en) | Rotary type developing device | |
| US5452064A (en) | Image forming apparatus having a transfer member rotatable in synchronism with a photosensitive member | |
| CN102707599A (en) | Image forming apparatus, and related methods | |
| US5828934A (en) | Driving device of developing units and toner replenishing units for use in image forming apparatus | |
| JP2001147618A (en) | Image forming device | |
| US20160062272A1 (en) | Image forming apparatus | |
| JPH0411030B2 (en) | ||
| CN103105757A (en) | Drive unit, and image forming apparatus and process cartridge incorporating same | |
| JP5448311B2 (en) | Drive transmission device and image forming apparatus using the same | |
| CN102298302A (en) | Image forming device | |
| US11526113B2 (en) | Image forming apparatus | |
| US6118465A (en) | Synchronous band drive for an inline color printer | |
| JPH06258884A (en) | Image forming device | |
| JP2009025610A (en) | Drive switching unit and image forming apparatus | |
| JP3212757B2 (en) | Multicolor image forming device | |
| JP2007187786A (en) | Image forming apparatus | |
| JP3352327B2 (en) | Color image forming equipment |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100804 Termination date: 20160515 |