CN106325024A - Developing device and multi-functional peripheral - Google Patents
Developing device and multi-functional peripheral Download PDFInfo
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- CN106325024A CN106325024A CN201510379327.9A CN201510379327A CN106325024A CN 106325024 A CN106325024 A CN 106325024A CN 201510379327 A CN201510379327 A CN 201510379327A CN 106325024 A CN106325024 A CN 106325024A
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- Prior art keywords
- reverse rotation
- developing
- pages
- sleeve
- drive motor
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/06—Apparatus for electrographic processes using a charge pattern for developing
- G03G15/08—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer
- G03G15/0806—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller
- G03G15/0815—Apparatus for electrographic processes using a charge pattern for developing using a solid developer, e.g. powder developer on a donor element, e.g. belt, roller characterised by the developer handling means after the developing zone and before the supply, e.g. developer recovering roller
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- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
The invention relates to a developing device and a multi-functional peripheral. The developing device comprises a developing device main body container, a discharge hole, a screw part, a screw driving motor, a developing part, a sleeve driving motor, a limiting part and a motor rotation control part, wherein the developing device main body container is used for accommodating a developing agent containing a toner and a carrier, the discharge hole is used for discharging the developing agent arranged in the developing device main body container, the screw part is arranged in the developing device main body container, the developing part is used for bearing the developing agent and making the toner attached onto a light sensing body with a latent image for developing and is provided with a developing sleeve capable of rotating and a fixed magnet, the sleeve driving motor is used for controlling positive and reverse rotation of the developing sleeve, the limiting part is arranged opposite to the developing sleeve and is used for limiting the developing agent borne by the developing part to a preset thickness, and the motor rotation control part is used for controlling rotation of the screw driving motor and the sleeve driving motor so that the reverse rotation quantity, caused by the screw driving motor, of the screw part is smaller than the reverse rotation quantity cased by the sleeve driving motor.
Description
Technical field
The present invention relates to a kind of employing and have what the two-component developer of toner and carrier carried out developing
Image processing system.
Background technology
Image processing system (Multi-Functional in binary development electrofax mode
Peripheral), in, visual image is needed on medium (paper using or resin flake), this Visual Graph
Seem to make to be formed at by toner to obtain as the image development on the photoreceptor of image carrier
's.Generally, the two-component developer of toner and carrier is used (to be the most also only called aobvious
The situation of shadow agent) developing unit feed the toner that consumes due to developing operation.At colored figure
As being formed in device, above-mentioned developing unit corresponds respectively to each yellow (Y), pinkish red (C), cyan
(M), the toner of black (K) and arrange.
The developing agent of such colors that image processing system is used, by image in developing unit
The screw part rotated in formation action is circulated, so that toner will not skewness.By making this
The part deformation of screw part, thus promote to be detained, by this delay in the moving process of developing agent
Developing agent from be arranged at specified altitude position outward opening discharge.Thus, developing agent is carried out
Discharge.
Additionally, in above-mentioned developing unit, and in order to developing agent guiding is used built-in solid to photosensitive drums
Determine the development sleeve of Magnetitum.Attract to be followed by screw part by the fixing Magnetitum in this development sleeve
The developing agent of ring, and guide the surface to photosensitive drums, by this developing agent institute by rotating of development sleeve
The toner development comprised is the sub-image being formed at photosensitive drum surface, thus realizes visualization.Afterwards,
Developing agent is incorporated in the race way of above-mentioned screw part again by the rotation of development sleeve.
But, the developing agent that this development sleeve is attracted is the developing agent being directed onto photosensitive drum surface
Amount is set as ormal weight, accordingly, it would be desirable to limit its height, therefore, is provided with doctor.
But, in the case of using toner melted at low temperatures, developing agent can be produced at wiping
The phenomenon that the back side of cutter is detained or developing agent condenses attachment after doctor when applying pressure.
In order to prevent this attachment developing agent, perform to make to carry out the agitator of common positive rotation and development sleeve faces
Shi Jinhang reverse rotation, make the control (reverse and control) that the developing agent near the doctor back side leaves.Should
Reverse controls provisional execution after common printed end.
Generally, the rotation of above-mentioned development sleeve and the rotation of agitator synchronize to carry out.But, exist with
Lower problem: in taken out the image processing system of structure of developing agent by reverse rotation as described above,
Even if not consuming the developing unit of toner, the height of developing agent also can gradually lower.Such ask
When topic is owing to being made developer movement by screw part, being carried out reverse rotation control as described above,
Developing agent moves to opposite direction relative to screw part and produces.
Summary of the invention
Even if the present invention provides a kind of screw part to carry out reverse rotation, the screw part of development sleeve side
The height of the developing agent of race way also will not reduce, thus, the figure that the image deterioration that thus causes is few
As forming device.
Developing unit involved by an embodiment of the present invention, has: developing unit main body container, receives
Receive the developing agent comprising toner and carrier；Outlet, discharges and is arranged at described developing unit main body
Developing agent in container；Screw part, is arranged in described developing unit main body container, and conveying is described
Described developing agent is also discharged by developing agent from described outlet；Screw drive motor, to this screw part
Carry out Spin Control so that it is carry out positive rotation and reverse rotation；Developing parts, carries described developing agent,
Making described toner be attached to have the photoreceptor of sub-image with development, described developing parts has and can rotate
Development sleeve and fixing Magnetitum；Sleeve drive motor, carries out Spin Control to described development sleeve,
It is made to carry out positive rotation and reverse rotation；Limiting part, is oppositely arranged with described development sleeve, by institute
State the described developing agent that developing parts carried and be limited to the thickness of regulation；Motor rotation control unit, control
Make described screw drive motor and the rotation of described sleeve drive motor, so that described screw drive is electric
The reverse rotation amount of the described screw part that power traction rises is described aobvious less than what described sleeve drive motor caused
The reverse rotation amount of shadow sleeve.
Image processing system involved by an embodiment of the present invention, has: development section, to being formed at
The electrostatic latent image of photoreceptor develops；Transfer section, is needed on the image of development in this development section
Record medium；And fixing section, make the image being needed on record medium by this transfer section fixing.
Wherein, described development section has: developing unit main body container, and collecting bag is containing toner and carrier
Developing agent；Outlet, discharges and is arranged at the developing agent in described developing unit main body container；Threaded shank
Part, is arranged in described developing unit main body container, carry described developing agent and by described developing agent from
Described outlet is discharged；Screw drive motor, carries out Spin Control to this screw part so that it is carry out
Positive rotation and reverse rotation；Developing parts, carries described developing agent, makes described toner be attached to tool
Having the photoreceptor of sub-image with development, described developing parts has revolvable development sleeve and fixing Magnetitum；
Sleeve drive motor, carries out Spin Control to described development sleeve so that it is carry out positive rotation and inverse rotation
Turn；Limiting part, is oppositely arranged with described development sleeve, described developing parts is carried described in
Developing agent is limited to the thickness of regulation；Motor rotation control unit, control described screw drive motor and
The rotation of described sleeve drive motor, so that the described screw part that causes of described screw drive motor
The reverse rotation amount of the described development sleeve that reverse rotation amount causes less than described sleeve drive motor.
A feature of the present invention is: is provided separately with the sleeve drive motor driving development sleeve and drives
The screw drive motor of dynamic screw part.
In following embodiment, control described screw drive motor and described sleeve drive motor
Rotation so that the reverse rotation amount of screw part that screw drive motor causes drives less than described sleeve
The reverse rotation amount of the described development sleeve that motor causes.
Specifically, terminate corresponding to each printing work, make development sleeve reverse rotation, if reached
The printing number of pages of regulation, then, while making development sleeve carry out reverse rotation, also make screw part enter
Row reverse rotation.So, the reverse rotation amount reverse rotation amount less than development sleeve of screw part is made.
Accompanying drawing explanation
Fig. 1 is the figure being monolithically fabricated of the color image forming device illustrating an embodiment.
Fig. 2 is the figure of the processing unit illustrating that the colors in an embodiment are general.
Fig. 3 is for illustrating in the developing room of an embodiment, being transferred by the dextrorotation of screw part
The figure of the state of conveying developing agent.
Fig. 4 is for explanation in the developing room of an embodiment, is come by the reverse rotation of screw part
The figure of the state of conveying developing agent.
Fig. 5 is to be shown in the image processing system of an embodiment, carries out development sleeve and screw rod
The figure of the configuration example of the motor rotation control unit of the Spin Control of parts.
Fig. 6 is to illustrate the development making screw part and development sleeve when the phase same time carries out reverse rotation
The figure of the height change of agent.
Fig. 7 is to illustrate in one embodiment, makes the reverse rotation of screw part be less than the inverse of development sleeve
The figure of the height change of developing agent during rotation.
Fig. 8 is the figure of the flow process illustrating the action for an embodiment is described.
Detailed description of the invention
Below, referring to the drawings an embodiment is illustrated.
(being monolithically fabricated of image processing system)
Fig. 1 is the outline of the color image forming device illustrating the developing unit being suitable for an embodiment
The figure constituted.As it is shown in figure 1, the inside of the body shell 20 at image processing system 10, side by side
It is provided with yellow (Y), pinkish red (C), cyan (M), the processing unit 30 of black (K).Respectively
The processing unit of color has identical structure.
Each processing unit 30Y, 30M, 30C, 30K are set up in parallel relative to intermediate transfer belt 50,
Have and come from optical writing device 40Y, 40M, 40C, 40K and (in the drawings, be expressed as in the lump
40) photoreceptor 60Y, 60C, 60M, 60K that light beam is irradiated.
Throughout in reason unit 30Y, 30C, 30M, 30K, use from the tone being disposed above
The yellow of agent bottle 32Y, 32C, 32M, 32K offer, magenta, cyan, the different colours of black
Toner, thus form the toner image of respective different colours.Toner bottle 32Y, 32C,
If 32M, 32K use up by toner respectively, can be installed as with in the way of the toner bottle that more renews
Can dismount.Each processing unit 30Y, 30C, 30M, 30K are general, therefore, at Fig. 2
The middle labelling omitting the symbol representing color illustrates.
As in figure 2 it is shown, processing unit 30 is made up of photo-conductor unit 70 and developing unit 80, should
Photo-conductor unit 70 has the photoreceptor 60 being driven in rotation towards the direction of arrow.Photo-conductor unit 70
There is around photoreceptor 60 cleaning device 90 and Charging system 92.
Photoreceptor 60 is provided with photosensitive layer on cylindric outer peripheral face, is driven motor when printing
(not shown) rotates and drives.It is irradiated in photoreceptor 60 by the light beam penetrated from optical writing device
Outer peripheral face, thus on the outer peripheral face of photoreceptor 60, write the electrostatic latent image that image is corresponding.
Developing unit 80 carries out supplying for the toner of photoreceptor 60.Pass through supplied toner
The electrostatic latent image of the outer peripheral face being written in photoreceptor 60 is developed, thus quiet on photoreceptor 60
Electricity sub-image is visualized as toner image.
Optical writing device 40 does not the most illustrate, but, such as lead to based on image information
Cross polygon prism and make laser polarization light, by multiple lens, each photoreceptor 60 is irradiated, thus
It is scanned.
Returning to Fig. 1, resin molding or rubber are e.g. formed by intermediate transfer belt 50 as matrix
Ring-type band, transfer be formed at the toner image on photoreceptor 60.This intermediate transfer belt 50 quilt
Roller 100,110,120 supports and rotates to the direction of arrow and drives.Inner circumferential at intermediate transfer belt 50
Side, face, i.e. in the inner side of ring, be provided with for making the toner image on each photoreceptor 60 be needed on
Four primary transfer roller 130Y, 130C, 130M, 130K on intermediate transfer belt 50.
Intermediate transfer belt 50 be clamped in primary transfer roller 130Y, 130C, 130M, 130K and
Between photoreceptor 60Y, 60C, 60M, 60K, thus form primary transfer gap.Primary transfer roller
130Y, 130C, 130M, 130K are set to be connected to the inner side of intermediate transfer belt 50.At these
Be applied with on primary transfer roller primary transfer bias, due to photoreceptor 60Y, 60C, 60M, 60K
Potential difference, the toner image of photoreceptor 60Y, 60C, 60M, 60K is needed on middle turning
Print is with on the surface of 50.
So, the toner image of the upper formation of each photoreceptor 60Y, 60C, 60M, 60K by successively,
It is needed on overlappingly on intermediate transfer belt 50, thus on intermediate transfer belt 50, forms the tone of colour
Agent image.Additionally, in the outer peripheral face side of intermediate transfer belt 50, i.e. in the outside of ring, be provided with use
The cleaning section 140 of the residual toner of outer peripheral face of intermediate transfer belt 50, paper powder etc. it is attached in cleaning.
Four processing units 30Y, 30C, 30M, 30K in body shell 20 and light write
The lower section of device 40, is provided with medium (printing) P such as varied in size for stacking holding
First sheet feed stacker the 151, second sheet feed stacker 152.Stacking is held in the first sheet feed stacker 151, second and supplies
Medium P in paper disc 152 starts to carry out successively paper supply by paper feed roller from being positioned at uppermost paper using.
In body shell 20, it is formed for conveying from first sheet feed stacker the 151, second sheet feed stacker
152 leave and carry out the transport path 170 of the medium P of paper supply.Therefore, be accommodated in each sheet feed stacker 151,
The medium P of 152 be driven in rotation by multiple paper feed rollers and from be positioned at uppermost medium start by by
Page takes out, and carries along transport path 170.
Transport path 170 is provided with conveying roller 180, para-position roller 180r, transfer roll 190, determines
Image device 200, exit roller 210 etc..Start defeated from the first sheet feed stacker 151 or the second sheet feed stacker 152
Send medium P.Secondary transfer printing is formed between roller 120 and transfer roll 190 that intermediate transfer belt 50 passes through
Gap.The toner image of each colour being needed on intermediate transfer belt 50 is by secondary transfer printing gap
During be secondary transferred on medium P.
Driving is intermittently rotated, during the medium P stopped being admitted to by para-position roller 180r
Between transfer belt 50 and transfer roll 190 clamping transfer position.Further, at medium P by this transfer
During position, the toner image on intermediate transfer belt 50 is needed on medium P.These shapes
Become secondary transfer printing device.
Fixing device 200 applies heat and pressure to the medium P transferred with toner image, makes tone
Agent melts, and makes toner image fixing on medium P.Fixing device 200 is by being built-in with pyrotoxin example
Backer roll 201 and fixing band unit 202 such as fixing heater 201a are constituted.
And, fixing band unit 202 by fixing band 204, be built-in with pyrotoxin such as fixing heater
The heating roller 203 of 203a, driving roller 206 etc. are constituted.Fixing band 204 is edge due to driving roller 206
Counterclockwise rotating, heated roller 203 heats and maintains uniform temperature.Backer roll 201 also edge
It is rotated clockwise, is heated by internal pyrotoxin and maintain uniform temperature.Fixing band 204 with
Backer roll 201 abuts, and forms fixing gap.
Medium P is transferred during by secondary transfer printing region on intermediate transfer belt 50 and is carried
Panchromatic toner image, be transported to fixing device 200 afterwards.Medium P passes through fixing device
200, thus it is fixed process toner image.Afterwards, medium P is expelled to shape by exit roller 210
Become on the discharge tray 220 of upper surface part of body shell 20.
(composition of developing unit, action)
As in figure 2 it is shown, processing unit 30 has photo-conductor unit 70 and developing unit 80.Photosensitive
Body unit 70 is configured with cleaning device 90 in the side of photoreceptor 60, joins in the lower section of photoreceptor 60
It is equipped with Charging system 92.
Photoreceptor 60 only reduces at the region surface current potential exposed by laser L and forms electrostatic latent image.
Electrostatic latent image is rotated by photoreceptor 60 and is transported to relative with the developer roll 82 of developing unit 80
Developing regional.
Developer roll 82 is the developer carrier of bearing developer, is arranged at relative with photoreceptor 60
The peristome of the developing room 84 of developing unit 80, has nonmagnetic development sleeve 88 and is built in
The fixing Magnetitum 89 of development sleeve 88.Fixing Magnetitum 89 does not rotates, and is comprised developing agent
Magnetic medium carries out magnetic absorption and reclaims.Additionally, in the downside of developer roll 82, be provided with attached
The thickness of the toner the surface in developer roll 82 (development sleeve 88) is limited in given size
Doctor 83.Further, the toner having passed through doctor 83 is transported to the surface of photoreceptor 60.
It is transported to transfer position from the medium P discharged with paper disc, turns for 50 2 times from intermediate transfer belt
The toner image that print is colored.Medium P transferred with toner image is transported to fixing device 200,
By heating and pressure fixing toner image.Then, the fixing medium having toner image is discharged
P。
On the other hand, after the transfer of the toner image for medium P terminates, sense is remained in
The cleaned device of toner 90 in body of light 60 is removed.Photoreceptor 60 returns to original state, becomes
The holding state formed for image next time.By repeatedly above process action, it is carried out continuously figure
As being formed.
Developing unit 80 has: developing room 84, has two transport paths；And developer roll 82,
It is set to the first transport path 84-1 from this developing room 84 and exposes a part.At the first transport path
84-1 has stirring, the screw part 230 of conveying developing agent.
As in figure 2 it is shown, development sleeve 88 is driven by sleeve drive motor 88m.Screw part 230
And screw part 250 is driven the most in the same direction by screw drive motor 235m.On the other hand,
Photoreceptor 60 is driven by other motors (not shown).
(supply of developing agent and the conveying of developing agent)
Fig. 3 is the brief configuration for illustrating to carry the first transport path 84-1 of the mechanism of developing agent
Figure.Although the most not illustrating, but, after this transport path 84-1 of developing room 84
Side has the second transport path 84-2 carried by developing agent to reverse direction.At the second transport path 84-2,
There is stirring, the screw part 250 of conveying developing agent and the survey of such as based on developing agent magnetic susceptibility
The fixed toner concentration sensor 252 detecting toner concentration.
From toner bottle 32 to developer supply mouth 270 filling developer.Feed from supply mouth 270
Developing agent in developer container from rear side second transport path 84-2 left end enter on front side of first
Transport path 84-1, the rotation in arrow 33a direction based on screw part 230 and be circulated, from
Left is stirred conveying to right.It is arranged at screw part 250 straight of the second transport path 84-2
Footpath is certain.Positive rotation based on the screw part 250 being arranged at the second transport path 84-2,
At rear side, developing agent is carried from right to left.
The developed sleeve of developing agent 88 stirred by screw part 230 at the first transport path 84-1 is inhaled
Draw.
The toner concentration sensor 252 of the second transport path 84-2 being arranged at developing room 84 exports
Mensuration signal (concentration sensor detection voltage) corresponding to toner remaining amount in developer container.This
Outward, in developing room 84, the developing agent of the temperature of the developing agent being additionally provided with in detection developer container
Temperature sensor 260.
Based on coming from the output of toner concentration sensor 252, (do not scheme from developer supply device
Show) by developer supply mouth 270 filling developer in developer container.Such as, based on toner
Supply control signal, to represent the mensuration signal institute of the toner concentration sensor 252 of toner remaining amount
The corresponding time, from developer supply device to filling developer in developer container.
It is defeated that the toner supplied from developer supply mouth 270 and carrier (developing agent) are transported to first
Send path 84-1, by the positive rotation in the arrow 33a direction of screw part 230, by conveying to arrow
33b direction.
It is arranged at the screw part 230 of the first transport path 84-1 in screw configuration, but, one
Part is provided with the part (coarse pitch part) 34 that big and screw rod the diameter of pitch is little.Above it
The position of specified altitude h, is provided with the outlet 35 of developing agent.
When developing agent is stirred while being carried along the direction of arrow 33b, in this coarse pitch portion
Dividing 34, owing to the transporting velocity of developing agent is slack-off, therefore, developing agent rises on the portion.Fig. 3
In dotted line represent the outer surface line that carried developing agent is overall.
The result that developing agent local rises is that a part of developing agent of the near top of this riser portions is from row
Outlet 35 is discharged to the outside.This mechanism utilizes the spilling of the developing agent of local savings to discharge developing agent,
Therefore, it is referred to as overflowing developing agent output mechanism.
(soft bonding phenomenon)
But, when scraping developing agent by doctor as described above, easily produce on doctor
Raw developing agent condenses attachment, the most so-called soft bonding phenomenon.Such as, if with machine body temperature 45.,
50 DEG C, lettering rate 1% to 8% carry out the continuous printing of about page 4000, all can produce soft bonding
Phenomenon.Due to this phenomenon, white wire can occur on image.
Then, in order to prevent the attachment of developing agent that this soft bonding phenomenon causes, sleeve drive motor is made
88m carries out reverse rotation, so that development sleeve 88 is along counter-rotating.By this reverse rotation, make phase
Moving direction for the developing agent on the development sleeve 88 of doctor 83 is contrary, thus prevents soft viscous
The attachment of the toner that knot causes.
In the prior art, sleeve drive motor 235m and screw drive motor 88m synchronize, and make
The motor of both sides carries out reverse rotation simultaneously.
So, by the reverse rotation of sleeve drive motor 235m, so that screw part 230,250
Carry out reverse rotation, the movement of the developing agent in the first transport path 84-1, the second transport path 84-2
Direction becomes reverse.Fig. 4 is the figure illustrating this developing agent along the state inversely carried.I.e.,
The screw part 230 of one transport path 84-1 carries out positive rotation along the direction shown in arrow 36a, aobvious
Shadow agent is carried along the direction shown in arrow 36b.
(too much discharging and countermeasure of developing agent)
But, due to the reverse conveying of this developing agent, as shown in Figure 4, at the coarse pitch of screw part
Part 34, the height h of the rising of developing agent increases (k ＞ h), the developing agent discharged from outlet 35
Amount increase, use O-level assorted YCMK toner unit in, if passed through
Toner concentration sensor 252 detects that toner concentration is the most reduced, then supply developing agent.But,
If according to printing state, carry out colored printing when the most less using toner,
And printing work terminates all to carry out the reverse rotation of screw drive motor every time, then this toner will not subtract
Few, the most not filling developer, then can discharge developing agent too much, thus the height reduction of developing agent.
Fig. 6 is the figure of the height transition illustrating developing agent of the prior art.X-axis takes printing number of pages,
Y-axis takes the height of developing agent.I.e., in this case, it is to illustrate always to make screw drive motor 235m
Figure with the height h of developing agent during sleeve drive motor 88m reverse rotation simultaneously.Straight line 63 illustrates
Entirely without developing agent when making screw drive motor 235m and screw drive motor 88m reverse rotation
Highly.Straight line 64 illustrates the height of developing agent required when will not produce picture noise.Based on data
Line 65 illustrate and terminate corresponding to each printing work, make screw drive motor 235m and screw drive
The height of developing agent during motor 88m reverse rotation.Based on the line 65 shown in Fig. 6 it is understood that
If printing number of pages increases, then the height of developing agent the most linearly reduces.
Being directed to this, Fig. 7 is the height illustrating the developing agent in the case of one embodiment of the present invention
The figure of transition.I.e., in this case, sleeve drive motor 88m is made to terminate at each printing work
Carry out reverse rotation, but, screw drive motor 235m then corresponds to the printing of regulation number of pages and makes it
Reverse rotation.
Lines 75 based on data illustrate: sleeve drive motor 88m terminates corresponding to each printing work
And carrying out reverse rotation, screw drive motor 235m is carried out corresponding to regulation number of pages (such as S page)
The height of developing agent during reverse rotation.As shown in the line 75 of this Fig. 7, the height of developing agent can be
Constant.
Fig. 5 is to illustrate the screw drive motor of an embodiment and control the rotation of screw drive motor
The figure of configuration example of motor rotation control unit.This motor rotation control unit has: enter printing number of pages
The printed leaves counter 501 of row counting；Screw rod reverse rotation number of pages configuration part 502, presets and makes
The printing number of pages of screw part reverse rotation；Number of pages comparing section 503, compares the printing number of pages of both sides
Relatively；Sleeve drive motor control portion 504；And screw drive motor control portion 505.
Number of pages comparing section 503 is by the counting number of pages of printed leaves counter 501 and screw rod reverse rotation page
The circuit that the screw rod reverse rotation number of pages set in number configuration part 502 compares.Sleeve drive motor control
Portion 504 processed is positive rotation and the circuit of reverse rotation controlling sleeve drive motor 88m.Screw drive
Motor controling part 505 is positive rotation and the circuit of reverse rotation controlling screw drive motor 235m.
It is aobvious that screw part that screw drive motor 235m causes and sleeve drive motor 88m cause
The reverse rotation amount of shadow sleeve is to carry out the control of stipulated time reverse rotation in motor rotation control unit
Perform number of times.By sleeve drive motor control portion 504 and screw drive motor control portion 505,
Be converted to reverse rotation amount from reverse rotation number of pages and export.
Additionally, for ease of understanding, functionally illustrate these circuit, it practice, can also lead to
Cross ROM, RAM etc. to carry out storing calculation process.
(action specification based on flow chart)
Below, based on the flow chart shown in Fig. 8, the action of above-mentioned embodiment is illustrated.Start
The action of image processing system, first, in A801, in screw rod reverse rotation number of pages configuration part 502
In, operator inputs setting screw rod reverse rotation number of pages.Initial value can be preset.
Then, in A802, perform the actual printing treatment in image processing system, at A803
In, in printed leaves counter 501, printing number of pages is counted.
Then, in A804, detect whether a series of printing work is over.If printing
Work is not over, then return to A802, again perform printing treatment.
On the other hand, if finishing printing work in A804, then accumulative printing in A805
Number of pages.In A806, number of pages comparing section 503 compares detection printed leaves counter 501
Whether counting number of pages has reached the spiral shell of regulation set in advance in screw rod reverse rotation number of pages configuration part 502
Bar reverse rotation number of pages.If counting number of pages is not up to screw rod reverse rotation number of pages (being no in A806),
Then indicate sleeve reverse rotation control signal to sleeve drive motor control portion 504.Now, sleeve drives
Motor carries out reverse rotation, only makes development sleeve carry out reverse rotation (A807).
On the other hand, in A806, if printed leaves counting number being detected by number of pages comparing section 503
The counting number of pages of device 501 has reached screw rod reverse rotation number of pages (being yes at A806), then in A808,
Make development sleeve reverse rotation, then, make screw part be also carried out reverse rotation in A809.Now,
Number of pages comparing section 503 is to sleeve drive motor control portion 504 and 505, screw drive motor control portion
Reverse rotation is sent to indicate control signal.Additionally, the order of A808 and A809 can also be exchanged.
In A810, reset the count value of printed leaves counter, return to A802.
So, terminate to carry out the reverse rotation of development sleeve corresponding to each printing work, corresponding to every
The printing of secondary regulation number of pages terminates to carry out the reverse rotation of screw part.Therefore, the inverse rotation of screw part
Change fewer than the number of times of the reverse rotation of development sleeve, even if in the few printing of the consumption of toner
In the case of, the situation of the height reduction of developing agent is the most little.Accordingly it is possible to prevent owing to developing agent is high
The deterioration of the printing image that the reduction of degree causes.
(effect of the present invention, variation etc.)
According to above-mentioned embodiment, even if screw part carries out reverse rotation, the developing agent height of riser portions
Also will not reduce, thus, it is possible to obtain the image processing system that the image deterioration that thus constitutes is few.
But, the composition making developing agent rise to specified altitude be possible not only to be as above-mentioned embodiment that
Sample changes diameter, it is also possible to be other compositions making screw part deformation etc..
Additionally, in the above-described embodiment, situations below is illustrated: terminate at printing work
Time, make sleeve drive motor reverse rotation, terminate and print number of pages to have reached regulation number of pages at printing work
Time, make screw drive motor and sleeve drive motor reverse rotation.
But, the present invention is not limited in this situation, usually, as long as carrying out driving electricity than sleeve
The reverse rotation of the screw drive motor that the reverse rotation number of times of machine is few.
Generally, the printing number of pages making the regulation of screw rod reverse rotation is more, during this period, can carry out repeatedly
Printing work.Therefore, as long as it practice, terminating to make sleeve drive motor corresponding to each printing work
Reverse rotation, the printing number of pages corresponding to above-mentioned regulation makes screw drive motor reverse rotation.
Additionally, the reverse rotation amount of screw part and development sleeve refers at stipulated time (every secondary control
The time of corresponding reverse rotation) carry out the execution number of times of the control of reverse rotation.
Notwithstanding some embodiment, but these embodiments are only used as example presents, not
It is intended to limit the scope of invention.It practice, new device and method described in literary composition can be each with other
Kind of mode is implemented, additionally the apparatus and method described in literary composition various omissions, replace, deform, the most not
Depart from the objective of invention.Claims and equivalent thereof be intended to comprise fall into the scope of the present invention and
Variant in objective.
Claims (10)
1. a developing unit, it is characterised in that have:
Developing unit main body container, collecting bag contains toner and the developing agent of carrier；
Outlet, discharges and is arranged at the developing agent in described developing unit main body container；
Screw part, is arranged in described developing unit main body container, carries described developing agent
And described developing agent is discharged from described outlet；
Screw drive motor, carries out Spin Control to this screw part so that it is carry out positive rotation
And reverse rotation；
Developing parts, carries described developing agent, makes described toner be attached to have sub-image
Photoreceptor is with development, and described developing parts has revolvable development sleeve and fixing Magnetitum；
Sleeve drive motor, carries out Spin Control to described development sleeve so that it is carry out dextrorotation
Turn and reverse rotation；
Limiting part, is oppositely arranged with described development sleeve, is carried by described developing parts
Described developing agent be limited to predetermined thickness；And
Motor rotation control unit, controls described screw drive motor and described sleeve drives electricity
The rotation of machine, so that the reverse rotation amount of described screw part that described screw drive motor causes
Reverse rotation amount less than the described development sleeve that described sleeve drive motor causes.
Developing unit the most according to claim 1, it is characterised in that
Described reverse rotation amount is described screw part or described development sleeve carries out the scheduled time
The execution number of times of the control of reverse rotation.
Developing unit the most according to claim 2, it is characterised in that
Described motor rotation control unit terminates to carry out described sleeve corresponding to each printing work
The reverse rotation of the described development sleeve that driving motor causes, is reaching threaded shank set in advance
When the reverse rotation number of pages of part and described printing work are over, carry out described screw drive electricity
The reverse rotation of the described screw part that power traction rises.
Developing unit the most according to claim 3, it is characterised in that
Described motor rotation control unit has: printed leaves counter, the printed leaves to medium
Number counts；Screw rod reverse rotation number of pages configuration part, it is possible to preset and make described threaded shank
Part carries out the number of pages of the described medium of reverse rotation；And number of pages comparing section, to described printed leaves
The printing number of pages of the described medium that counter is counted carries out inverse rotation with making described screw part
The number of pages of the described medium turned compares.
Developing unit the most according to claim 4, it is characterised in that
Described motor rotation control unit also has: screw drive motor control portion, passing through
State the printing of the described medium that number of pages comparing section detects that described printed leaves counter counted
When number of pages has reached to make the number of pages of described medium that described screw part carries out reverse rotation, to institute
State screw drive motor and send control signal, so that described screw part carries out reverse rotation.
6. an image processing system, it is characterised in that have:
Development section, develops to the electrostatic latent image being formed at photoreceptor；
Transfer section, is needed on record medium by the image of development in this development section；And
Fixing section, makes the image being needed on record medium by this transfer section fixing,
Wherein, described development section has:
Developing unit main body container, collecting bag contains toner and the developing agent of carrier；
Outlet, discharges and is arranged at the developing agent in described developing unit main body container；
Screw part, is arranged in described developing unit main body container, carries described aobvious
Described developing agent is also discharged by shadow agent from described outlet；
Screw drive motor, carries out Spin Control to this screw part so that it is just carrying out
Rotate and reverse rotation；
Developing parts, carries described developing agent, makes described toner be attached to have latent
The photoreceptor of picture is with development, and described developing parts has revolvable development sleeve and fixes
Magnetitum；
Sleeve drive motor, carries out Spin Control to described development sleeve so that it is carry out
Positive rotation and reverse rotation；
Limiting part, is oppositely arranged with described development sleeve, by described developing parts institute
The described developing agent of carrying is limited to predetermined thickness；And
Motor rotation control unit, controls described screw drive motor and described sleeve drives
The rotation of galvanic electricity machine, so that the described screw part that causes of described screw drive motor is inverse
The reverse rotation amount of the described development sleeve that rotation amount causes less than described sleeve drive motor.
Image processing system the most according to claim 6, it is characterised in that
Described reverse rotation amount is described screw part or described development sleeve carries out the scheduled time
The execution number of times of the control of reverse rotation.
Image processing system the most according to claim 7, it is characterised in that
The described motor rotation control unit of described development section terminates corresponding to each printing work
Carry out the reverse rotation of the described development sleeve that described sleeve drive motor causes, the most described
When printing work is over and exceedes printing number of pages set in advance, carry out described screw rod and drive
The reverse rotation of the described screw part that galvanic electricity power traction rises.
Image processing system the most according to claim 8, it is characterised in that
The described motor rotation control unit of described development section has: printed leaves counter, right
The printing number of pages of medium counts；Screw rod reverse rotation number of pages configuration part, can preset and make
Described screw part carries out the number of pages of the described medium of reverse rotation；And number of pages comparing section, right
The printing number of pages of the described medium that described printed leaves counter is counted with make described threaded shank
The number of pages of the described medium that part carries out reverse rotation compares.
Image processing system the most according to claim 9, it is characterised in that
The described motor rotation control unit of described development section also has: screw drive motor controls
Portion, is detecting, by described number of pages comparing section, the institute that described printed leaves counter is counted
Give an account of the described medium that the printing number of pages of matter reached to make described screw part carry out reverse rotation
During number of pages, send control signal to described screw drive motor, so that described screw part enters
Row reverse rotation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379327.9A CN106325024B (en) | 2015-07-01 | 2015-07-01 | Developing apparatus and image forming apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510379327.9A CN106325024B (en) | 2015-07-01 | 2015-07-01 | Developing apparatus and image forming apparatus |
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| Publication Number | Publication Date |
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| CN106325024A true CN106325024A (en) | 2017-01-11 |
| CN106325024B CN106325024B (en) | 2019-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201510379327.9A Expired - Fee Related CN106325024B (en) | 2015-07-01 | 2015-07-01 | Developing apparatus and image forming apparatus |
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| CN (1) | CN106325024B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114460825A (en) * | 2020-11-09 | 2022-05-10 | 佳能株式会社 | Image forming apparatus with a plurality of image forming units |
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| JP2007156323A (en) * | 2005-12-08 | 2007-06-21 | Fuji Xerox Co Ltd | Image forming device |
| JP2009036786A (en) * | 2007-07-31 | 2009-02-19 | Kyocera Mita Corp | Developing device and image forming apparatus with the same |
| CN101498910A (en) * | 2008-01-28 | 2009-08-05 | 株式会社理光 | Process cartridge including developing unit and incorporated in image forming apparatus |
| CN101515140A (en) * | 2007-12-28 | 2009-08-26 | 株式会社理光 | Powder transport screw, and development device, process unit and image-forming apparatus |
| CN101989054A (en) * | 2009-07-29 | 2011-03-23 | 株式会社理光 | Image forming apparatus |
| US20130028640A1 (en) * | 2011-07-29 | 2013-01-31 | Brother Kogyo Kabushiki Kaisha | Developing apparatus having thickness regulating member |
| JP2014139629A (en) * | 2013-01-21 | 2014-07-31 | Kyocera Document Solutions Inc | Developing device and image forming apparatus including the same |
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2015
- 2015-07-01 CN CN201510379327.9A patent/CN106325024B/en not_active Expired - Fee Related
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| JP2007156323A (en) * | 2005-12-08 | 2007-06-21 | Fuji Xerox Co Ltd | Image forming device |
| JP2009036786A (en) * | 2007-07-31 | 2009-02-19 | Kyocera Mita Corp | Developing device and image forming apparatus with the same |
| CN101515140A (en) * | 2007-12-28 | 2009-08-26 | 株式会社理光 | Powder transport screw, and development device, process unit and image-forming apparatus |
| CN101498910A (en) * | 2008-01-28 | 2009-08-05 | 株式会社理光 | Process cartridge including developing unit and incorporated in image forming apparatus |
| CN101989054A (en) * | 2009-07-29 | 2011-03-23 | 株式会社理光 | Image forming apparatus |
| US20130028640A1 (en) * | 2011-07-29 | 2013-01-31 | Brother Kogyo Kabushiki Kaisha | Developing apparatus having thickness regulating member |
| JP2014139629A (en) * | 2013-01-21 | 2014-07-31 | Kyocera Document Solutions Inc | Developing device and image forming apparatus including the same |
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| CN114460825A (en) * | 2020-11-09 | 2022-05-10 | 佳能株式会社 | Image forming apparatus with a plurality of image forming units |
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| CN106325024B (en) | 2019-08-09 |
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