CN106325024B - Developing apparatus and image forming apparatus - Google Patents
Developing apparatus and image forming apparatus Download PDFInfo
- Publication number
- CN106325024B CN106325024B CN201510379327.9A CN201510379327A CN106325024B CN 106325024 B CN106325024 B CN 106325024B CN 201510379327 A CN201510379327 A CN 201510379327A CN 106325024 B CN106325024 B CN 106325024B
- Authority
- CN
- China
- Prior art keywords
- reverse rotation
- developer
- drive motor
- pages
- sleeve
- 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.)
- Expired - Fee Related
Links
Classifications
-
- 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
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Dry Development In Electrophotography (AREA)
Abstract
A kind of developing apparatus and image forming apparatus, the developing apparatus include developing apparatus main body container, developer of the storage comprising toner and carrier；The developer being set in developing apparatus main body container is discharged in outlet；Screw part is set in developing apparatus main body container, conveys developer and it is discharged from outlet；Screw drive motor carries out positive reverse rotation control to the screw part；Developing parts, bearing developer make toner be attached to the photoreceptor with sub-image to develop, and have revolvable development sleeve and fixed magnetite；Sleeve drive motor carries out positive reverse rotation control to development sleeve；Limiting component is oppositely arranged with development sleeve, and the developer that developing parts are carried is limited to predetermined thickness；Motor rotation control unit controls the rotation of screw drive motor and sleeve drive motor, so that reverse rotation amount of the reverse rotation amount of screw part caused by screw drive motor less than development sleeve caused by sleeve drive motor.
Description
Technical field
Dress is formed using the image that there is the two-component developer of toner and carrier to develop the present invention relates to a kind of
It sets.
Background technique
In the image forming apparatus (Multi-Functional Peripheral) of binary development electrofax mode
In, visual image is needed in medium (with paper or resin flake), which is to make to be formed in conduct by toner
Obtained from image development on the photoreceptor of image carrier.Under normal circumstances, aobvious using the binary of toner and carrier
The developing apparatus of shadow agent (also having the case where being only called developer below) feeds the toner consumed due to developing operation.In coloured silk
In the image forming apparatus of color, above-mentioned developing apparatus corresponds respectively to each yellow (Y), pinkish red (C), cyan (M), black (K)
Toner and be arranged.
The developer of such colors used in image forming apparatus, by image formation movement in developing apparatus
The screw part of rotation is recycled, so that toner will not be unevenly distributed.By making a part deformation of the screw part, thus
Promote to be detained in the moving process of developer, by the developer of the delay from the outward opening for the position for being set to specified altitude
Discharge.Carry out the discharge of developer as a result,.
In addition, using the aobvious of built-in fixed magnetite in above-mentioned developing apparatus in order to guide developer to photosensitive drums
Shadow sleeve.Attract the developer recycled by screw part by the fixation magnetite in the development sleeve, and passes through development set
The toner development that the developer is included is to be formed in diving for photosensitive drum surface to the surface of photosensitive drums by the rotation guidance of cylinder
Picture, to realize visualization.Later, developer is incorporated in following for above-mentioned screw part by the rotation of development sleeve again
Ring region.
But the developer that is attracted of the development sleeve is to be directed onto the amount of the developer of photosensitive drum surface to be set as advising
It is quantitative, therefore, it is necessary to limit its height, therefore, it is provided with doctor.
But using the toner melted at low temperature, it is stagnant at the back side of doctor that developer can be generated
It stays or developer condenses the phenomenon that adhering to behind doctor upon application of pressure.The attachment developer in order to prevent, holds
It exercises the blender for carrying out common positive rotation and development sleeve temporarily carries out reverse rotation, makes the developer near the doctor back side
The control (reversing control) left.The reverse controls the provisional execution after common printed end.
It is carried out in general, the rotation of above-mentioned development sleeve is synchronous with the rotation of blender.But have the following problems: logical
It crosses in image forming apparatus of the reverse rotation as described above to take out the construction of developer, does not consume the development of toner even
Device, the height of developer also can gradually lower.Such problems is due to making to develop by screw part as described above
When agent movement, progress reverse rotation control, developer is mobile and generation to opposite direction relative to screw part.
Summary of the invention
Even if the present invention provides a kind of screw part progress reverse rotation, the race way of the screw part of development sleeve side
The height of developer will not reduce, thus, thus caused by the few image forming apparatus of image deterioration.
Developing apparatus involved in an embodiment of the present invention, comprising: developing apparatus main body container, storage include toner
And the developer of carrier；The developer being set in the developing apparatus main body container is discharged in outlet；Screw part, if
It is placed in the developing apparatus main body container, conveys the developer and the developer is discharged from the outlet；Screw rod
Driving motor carries out rotation control to the screw part, it is made to carry out positive rotation and reverse rotation；Developing parts, described in carrying
Developer makes the toner be attached to the photoreceptor with sub-image to develop, and the developing parts have revolvable development
Sleeve and fixed magnetite；Sleeve drive motor carries out rotation control to the development sleeve, it is made to carry out positive rotation and inverse rotation
Turn；Limiting component is oppositely arranged with the development sleeve, and the developer that the developing parts are carried is limited to provide
Thickness；Motor rotation control unit controls the rotation of the screw drive motor and the sleeve drive motor, so that described
The reverse rotation amount of the screw part caused by screw drive motor is less than the development set caused by the sleeve drive motor
The reverse rotation amount of cylinder.
Image forming apparatus involved in an embodiment of the present invention, comprising: development section, to the electrostatic for being formed in photoreceptor
Sub-image develops；The image to develop in the development section is needed on recording medium by transfer section；And fixing section, make to pass through
The transfer section is needed on the fixing of the image in recording medium.Wherein, the development section includes developing apparatus main body container, storage
Developer comprising toner and carrier；The developer being set in the developing apparatus main body container is discharged in outlet；Spiral shell
Rod unit is set in the developing apparatus main body container, conveys the developer and by the developer from the outlet
Discharge；Screw drive motor carries out rotation control to the screw part, it is made to carry out positive rotation and reverse rotation；Developing parts,
The developer is carried, so that the toner is attached to the photoreceptor with sub-image to develop, the developing parts have and can revolve
The development sleeve and fixed magnetite turned；Sleeve drive motor carries out rotation control to the development sleeve, it is made to carry out positive rotation
And reverse rotation；Limiting component is oppositely arranged with the development sleeve, and the developer that the developing parts are carried limits
It is made as defined thickness；Motor rotation control unit controls the rotation of the screw drive motor and the sleeve drive motor,
So that the reverse rotation amount of the screw part caused by the screw drive motor is less than institute caused by the sleeve drive motor
State the reverse rotation amount of development sleeve.
A feature of the present invention is: being provided separately driving screw part with the sleeve drive motor of driving development sleeve
Screw drive motor.
In following embodiment, the rotation of the screw drive motor and the sleeve drive motor is controlled, with
Make the reverse rotation amount of screw part caused by screw drive motor less than the development sleeve caused by the sleeve drive motor
Reverse rotation amount.
Specifically, corresponding to each printing work terminates, make development sleeve reverse rotation, if having reached defined printing
Number of pages also makes screw part carry out reverse rotation then while making development sleeve carry out reverse rotation.In this way, making screw part
Reverse rotation amount is less than the reverse rotation amount of development sleeve.
Detailed description of the invention
Fig. 1 is the figure for showing the overall structure of color image forming device of an embodiment.
Fig. 2 is the figure for showing the assorted general processing unit in an embodiment.
Fig. 3 is to convey developer by the positive rotation of screw part for illustrating in the developing room of an embodiment
State figure.
Fig. 4 is to convey developer by the reverse rotation of screw part for illustrating in the developing room of an embodiment
State figure.
Fig. 5 is shown in the image forming apparatus of an embodiment, and the rotation of development sleeve and screw part is carried out
The figure of the configuration example of the motor rotation control unit of control.
Fig. 6 is the height change for showing the developer for making screw part with development sleeve when the phase same time carrying out reverse rotation
Figure.
Fig. 7 is to show the showing when reverse rotation of screw part being made to be less than the reverse rotation of development sleeve in one embodiment
The figure of the height change of shadow agent.
Fig. 8 is the figure shown for the process for illustrating the movement of an embodiment.
Specific embodiment
In the following, being illustrated referring to attached drawing to an embodiment.
(overall structure of image forming apparatus)
Fig. 1 is the figure for showing the schematic configuration of color image forming device for the developing apparatus for being applicable in an embodiment.Such as
Shown in Fig. 1, in the inside of the main body shell 20 of image forming apparatus 10, be set side by side with yellow (Y), pinkish red (C), cyan (M),
The processing unit 30 of black (K).Assorted processing unit construction having the same.
Each processing unit 30Y, 30M, 30C, 30K are set side by side relative to intermediate transfer belt 50, have and are write from light
Enter photoreceptor 60Y, 60C, 60M that the light beam of device 40Y, 40M, 40C, 40K (being expressed as 40 together in the figure) irradiated,
60K。
Throughout manage unit 30Y, 30C, 30M, 30K in, using from be disposed above toner bottle 32Y, 32C, 32M,
32K provide yellow, magenta, cyan, black different colours toner, to form the toner figure of respective different colours
Picture.Toner bottle 32Y, 32C, 32M, 32K are pacified in a manner of the toner bottle that can more renew if toner is used up respectively
Dress is that can dismount.Each processing unit 30Y, 30C, 30M, 30K be it is general, therefore, in Fig. 2 omit indicate color symbol
Label be illustrated.
As shown in Fig. 2, processing unit 30 is made of photo-conductor unit 70 and developing apparatus 80, which has
The photoreceptor 60 being driven in rotation towards arrow direction.Photo-conductor unit 70 has 90 He of cleaning device around photoreceptor 60
Charging system 92.
Photoreceptor 60 is provided with photosensitive layer on cylindric outer peripheral surface, in printing by driving motor rotation (not shown)
Driving.The outer peripheral surface of photoreceptor 60 is irradiated in by the light beam projected from optical writing device, thus in the outer peripheral surface of photoreceptor 60
The corresponding electrostatic latent image of upper write-in image.
Developing apparatus 80 toner of photoreceptor 60 is supplied.It is photosensitive to being written in by the toner supplied
The electrostatic latent image of the outer peripheral surface of body 60 develops, so that the electrostatic latent image on photoreceptor 60 is visualized as toner image.
Optical writing device 40 does not illustrate in Fig. 2, still, such as makes laser by polygon prism based on image information on one side
Polarisation is on one side irradiated each photoreceptor 60 by multiple lens, thus to be scanned.
Back to Fig. 1, intermediate transfer belt 50 is, for example, the cricoid band for forming resin film or rubber as matrix, is turned
Print the toner image being formed on photoreceptor 60.The intermediate transfer belt 50 is supported by roller 100,110,120 and to arrow direction
Rotation driving.In the inner peripheral surface side of intermediate transfer belt 50, i.e. in the inside of ring, be provided with for making the tone on each photoreceptor 60
Agent image is needed on four primary transfer rollers 130Y, 130C, 130M, 130K on intermediate transfer belt 50.
Intermediate transfer belt 50 be clamped in primary transfer roller 130Y, 130C, 130M, 130K and photoreceptor 60Y, 60C, 60M,
Between 60K, to form primary transfer gap.Primary transfer roller 130Y, 130C, 130M, 130K are set as being connected to intermediate transfer
With 50 inside.Be applied with primary transfer bias on these primary transfer rollers, due to photoreceptor 60Y, 60C, 60M, 60K
Potential difference, the toner image of photoreceptor 60Y, 60C, 60M, 60K are needed on the surface of intermediate transfer belt 50.
In this way, the toner image formed on each photoreceptor 60Y, 60C, 60M, 60K by successively, be overlappingly needed on centre
In transfer belt 50, to form colored toner image on intermediate transfer belt 50.In addition, in the periphery of intermediate transfer belt 50
Surface side, i.e. in the outside of ring, be provided with residual toner, the paper powder etc. for cleaning the outer peripheral surface for being attached to intermediate transfer belt 50
Cleaning section 140.
The lower section of four processing units 30Y, 30C, 30M, 30K and optical writing device 40 in main body shell 20, if
It is equipped with the first sheet feed stacker 151, the second sheet feed stacker 152 for medium (printing) P for keeping for example of different sizes to be laminated.Layer
It is folded be held in the first sheet feed stacker 151, the medium P in the second sheet feed stacker 152 by paper feed roller since positioned at it is uppermost with paper
Successively carry out paper supply.
In main body shell 20, it is formed with and leaves and carry out from the first sheet feed stacker 151, the second sheet feed stacker 152 for conveying
The transport path 170 of the medium P of paper supply.Therefore, the medium P for being accommodated in each sheet feed stacker 151,152 is revolved by multiple paper feed rollers
Turn driving and taken out page by page since being located at uppermost medium, is conveyed along transport path 170.
Conveying roller 180, contraposition roller 180r, transfer roll 190, fixing device 200, paper discharge are provided on transport path 170
Roller 210 etc..The pumped (conveying) medium P since the first sheet feed stacker 151 or the second sheet feed stacker 152.120 He of roller that intermediate transfer belt 50 passes through
Secondary transfer printing gap is formed between transfer roll 190.The toner image for each colour being needed on intermediate transfer belt 50 is passing through
It is secondary transferred during secondary transfer printing gap on medium P.
It is driven by contraposition roller 180r by intermittently rotation, the medium P stopped being admitted to 50 He of intermediate transfer belt
The transfer position that transfer roll 190 clamps.Also, color during medium P passes through the transfer position, on intermediate transfer belt 50
Toner image is needed on medium P.These form secondary transfer printing device.
Fixing device 200 applies heat and pressure to the medium P transferred with toner image, melts toner, makes tone
Agent image is fixed on medium P.Fixing device 200 is by being built-in with 201 He of pressure roller of pyrotoxin such as fixing heater 201a
Tape cell 202 is fixed to constitute.
Moreover, fixing tape cell 202 by fixing belt 204, be built-in with the heating roller of pyrotoxin such as fixing heater 203a
203, driven roller 206 etc. is constituted.Fixing belt 204 is rotated in the counterclockwise direction due to driven roller 206, is heated the heating of roller 203
And maintain certain temperature.Pressure roller 201 is also rotated in a clockwise direction, and is heated by internal pyrotoxin and is maintained certain temperature
Degree.Fixing belt 204 is abutted with pressure roller 201, forms fixing gap.
Medium P is transferred the panchromatic tone carried on intermediate transfer belt 50 during through secondary transfer printing region
Agent image is transported to fixing device 200 later.Medium P is by fixing device 200, to be fixed processing toner image.
Later, medium P is expelled on the discharge tray 220 for the upper surface part for being formed in main body shell 20 by exit roller 210.
(composition of developing apparatus, movement)
As shown in Fig. 2, processing unit 30 has photo-conductor unit 70 and developing apparatus 80.Photo-conductor unit 70 is in photoreceptor
60 side is configured with cleaning device 90, is configured with Charging system 92 in the lower section of photoreceptor 60.
Photoreceptor 60 only reduces in the region surface current potential exposed by laser L and forms electrostatic latent image.Electrostatic latent image passes through
Photoreceptor 60 rotates and is transported to the developing regional opposite with the developer roll 82 of developing apparatus 80.
Developer roll 82 is the developer carrier of bearing developer, is set to the developing apparatus 80 opposite with photoreceptor 60
The opening portion of developing room 84 has nonmagnetic development sleeve 88 and is built in the fixation magnetite 89 of development sleeve 88.Fixed magnetic
For stone 89 without rotation, the magnetic medium for being included to developer carries out magnetic absorption to recycle.In addition, under developer roll 82
Side is provided with the wiping that the thickness for being attached to the toner on the surface (development sleeve 88) of developer roll 82 is limited in predetermined size
Knife 83.Also, the toner for having passed through doctor 83 is transported to the surface of photoreceptor 60.
It is transported to transfer position from the medium P being discharged with paper disc, from the tone of intermediate transfer belt 50 secondary transfer printing colour
Agent image.It is transported to fixing device 200 transferred with the medium P of toner image, passes through heating and pressure fixing toner
Image.Then, discharge fixing has the medium P of toner image.
On the other hand, after the transfer of the toner image for medium P terminates, remain in the tone on photoreceptor 60
Agent is removed by cleaning device 90.Photoreceptor 60 returns to original state, and becomes the standby mode that image is formed next time.By anti-
Processing movement more than multiple, forms to be carried out continuously image.
Developing apparatus 80 includes developing room 84, and there are two transport paths for tool；And developer roll 82, it is set as from the development
First transport path 84-1 of room 84 exposes a part.There is the screw rod of stirring, conveying developer in the first transport path 84-1
Component 230.
As shown in Fig. 2, development sleeve 88 is driven by sleeve drive motor 88m.Screw part 230 and screw part 250
It is driven in the same direction together by screw drive motor 235m.On the other hand, photoreceptor 60 is by the driving (not shown) of other motors.
(supply of developer and the conveying of developer)
Fig. 3 is the brief configuration figure for the first transport path 84-1 for illustrating to convey the mechanism of developer.Although in Fig. 3
In do not illustrate, still, there is convey developer to reverse direction the in the rear side of the transport path 84-1 of developing room 84
Two transport path 84-2.In the second transport path 84-2, there is the screw part 250 and, for example, base of stirring, conveying developer
The toner concentration sensor 252 of toner concentration is detected in the measurement of the magnetic susceptibility of developer.
From toner bottle 32 to 270 filling developer of developer supply mouth.It is fed in developer container from supply mouth 270
Developer enters the first transport path 84-1 of front side from the second left end transport path 84-2 of rear side, is based on screw part 230
The direction arrow 33a rotation and recycled, be stirred conveying to the right from left.It is set to the second transport path 84-2's
The diameter of screw part 250 is certain.Based on the positive rotation for the screw part 250 for being set to the second transport path 84-2,
Rear side conveys developer from right to left.
Attracted in the first transport path 84-1 by the developed sleeve 88 of developer that screw part 230 stirs.
The toner concentration sensor 252 for being set to the second transport path 84-2 of developing room 84 exports in developer container
Measurement signal corresponding to toner remaining amount (concentration sensor detection voltage).In addition, being additionally provided with detection in developing room 84
The developer temperature sensor 260 of the temperature of developer in developer container.
Based on the output from toner concentration sensor 252, pass through development from developer supply device (not shown)
Agent feeds the filling developer into developer container of mouth 270.For example, signal is controlled based on toner supply, to indicate more than toner
It time corresponding to the measurement signal of the toner concentration sensor 252 of amount, is mended from developer supply device into developer container
To developer.
The toner and carrier (developer) supplied from developer supply mouth 270 is transported to the first transport path 84-1,
By the positive rotation in the direction arrow 33a of screw part 230, conveyed to the direction arrow 33b.
The screw part 230 of the first transport path 84-1 is set in screw configuration, still, part of it is provided with pitch
The small part (coarse pitch part) 34 of big and screw rod diameter.The position of specified altitude h above it, is provided with developer
Outlet 35.
When it is byed to convey while being stirred that developer is along the direction of arrow 33b, in the coarse pitch part 34, due to aobvious
The conveying speed of shadow agent is slack-off, and therefore, developer rises on the portion.Dotted line in Fig. 3 indicates that conveyed developer is whole
Outer surface line.
It is that developer locally rises the result is that the near top of the riser portions a part of developer from outlet 35 be discharged
To outside.Developer is discharged using the spilling for the developer locally put aside for the mechanism, and therefore, machine is discharged in referred to as spilling developer
Structure.
(soft bonding phenomenon)
But when scraping developer by doctor as described above, it is solidifying to be easy the generation developer on doctor
Knot attachment, i.e. so-called soft bonding phenomenon.For example, if with machine body temperature 45., 50 DEG C, lettering rate 1% to 8% carries out
Page 4000 or so of continuous printing can generate soft bonding phenomenon.Due to the phenomenon, can occur white wire on the image.
Then, the attachment of developer caused by the soft bonding phenomenon in order to prevent makes sleeve drive motor 88m carry out inverse rotation
Turn, to make development sleeve 88 along counter-rotating.By the reverse rotation, make aobvious on the development sleeve 88 relative to doctor 83
The moving direction of shadow agent is on the contrary, to prevent the attachment of toner caused by soft bonding.
In the prior art, sleeve drive motor 235m is synchronous with screw drive motor 88m, make both sides motor simultaneously into
Row reverse rotation.
In this way, pass through the reverse rotation of sleeve drive motor 235m, so that screw part 230,250 is made to carry out reverse rotation, the
One transport path 84-1, developer in the second transport path 84-2 moving direction become reverse.Fig. 4 is to show the developer
Along the figure of reverse transported state.I.e., the screw part 230 of the first transport path 84-1 is along side shown in arrow 36a
To positive rotation is carried out, developer is conveyed along direction shown in arrow 36b.
(the excessive discharge of developer and its countermeasure)
But due to the reverse conveying of the developer, as shown in figure 4, in the coarse pitch part 34 of screw part, developer
The height h of rising increase (k > h), the amount for the developer being discharged from outlet 35 increases, in the colors using O-level
In the unit of the toner of YCMK, if detecting that toner concentration is reduced by toner concentration sensor 252, supply
To developer.But if colored print is carried out in the state of in contrast less using toner according to printing state
Brush, and printing work terminates the reverse rotation for carrying out screw drive motor every time, then and the toner will not be reduced, therefore not mended
To developer, then developer can be discharged too much, so that the height of developer reduces.
Fig. 6 is the figure for showing the height transition of developer in the prior art.X-axis takes printing number of pages, and Y-axis takes developer
Highly.It i.e., in this case, is to show always to make screw drive motor 235m and sleeve drive motor 88m reverse rotation simultaneously
When developer height h figure.Straight line 63, which is shown, absolutely not makes screw drive motor 235m and screw drive motor 88m inverse
The height of developer when rotation.Straight line 64 shows the height of developer required when will not generate picture noise.Based on data
Line 65 show and terminate corresponding to each printing work, when making screw drive motor 235m and screw drive motor 88m reverse rotation
Developer height.Based on line 65 shown in fig. 6 it is understood that the height of developer is several if printing number of pages increases
Linearly reduce.
In view of this, Fig. 7 is the figure of the height transition of the developer in the case where showing one embodiment of the present invention.
I.e., sleeve drive motor 88m in this case, is made to terminate to carry out reverse rotation in each printing work, still, screw drive electricity
The printing that machine 235m then corresponds to regulation number of pages makes its reverse rotation.
Line 75 based on data is shown: sleeve drive motor 88m, which corresponds to each printing work, to be terminated and carries out reverse rotation,
The height of developer when screw drive motor 235m corresponds to regulation number of pages (such as S pages) and carries out reverse rotation.Such as the Fig. 7
Shown in line 75, the height of developer can be constant.
Fig. 5 is the motor rotation control for showing the rotation of screw drive motor and control screw drive motor of an embodiment
The figure of the configuration example in portion processed.The motor rotation control unit includes the printing page count 501 counted to printing number of pages；
Screw rod reverse rotation number of pages configuration part 502, presets the printing number of pages for making screw part reverse rotation；Number of pages comparing section 503, to double
The printing number of pages of side is compared；Sleeve drive motor control unit 504；And screw drive motor control unit 505.
Number of pages comparing section 503 is will to print counting number of pages and the screw rod reverse rotation number of pages configuration part 502 of page count 501
The circuit that the screw rod reverse rotation number of pages of middle setting is compared.Sleeve drive motor control unit 504 is control sleeve driving motor
The positive rotation of 88m and the circuit of reverse rotation.Screw drive motor control unit 505 is the dextrorotation for controlling screw drive motor 235m
Turn and reverse rotation circuit.
The reverse rotation of development sleeve caused by screw part caused by screw drive motor 235m and sleeve drive motor 88m
Amount is the execution number that the control of stipulated time reverse rotation is carried out in motor rotation control unit.It is controlled by sleeve drive motor
Portion 504 and screw drive motor control unit 505 are converted to reverse rotation amount from reverse rotation number of pages and export.
In addition, for ease of understand, functionally illustrate these circuits, in fact, can also by ROM, RAM etc. come
Carry out storage calculation process.
(action specification based on flow chart)
In the following, being illustrated based on flow chart shown in Fig. 8 to the movement of above embodiment.Start image forming apparatus
Movement, firstly, in A801, in screw rod reverse rotation number of pages configuration part 502, operator inputs setting screw rod reverse rotation page
Number.Initial value can be preset.
Then, in A802, the actual printing treatment in image forming apparatus is executed, in A803, in printing number of pages
Printing number of pages is counted in counter 501.
Then, in A804, a series of printing work is detected whether processing is over.If printing work is not over,
A802 is then returned to, executes printing treatment again.
On the other hand, if finishing printing work in A804, add up printing number of pages in A805.In A806,
Whether the counting number of pages for comparing detection printing page count 501 in number of pages comparing section 503 has reached in screw rod reverse rotation page
Preset defined screw rod reverse rotation number of pages in number configuration part 502.If counting number of pages is not up to screw rod reverse rotation number of pages
(being no in A806) then indicates that sleeve reverse rotation controls signal to sleeve drive motor control unit 504.At this point, sleeve drives
Motor carries out reverse rotation, and development sleeve is only made to carry out reverse rotation (A807).
On the other hand, in A806, if detecting the counting page of printing page count 501 by number of pages comparing section 503
Number, which has reached screw rod reverse rotation number of pages (being yes in A806), makes development sleeve reverse rotation then in A808, then, in A809
Screw part is set also to carry out reverse rotation.At this point, number of pages comparing section 503 is electric to sleeve drive motor control unit 504 and screw drive
Machine control unit 505 sends reverse rotation instruction control signal.In addition, the sequence of A808 and A809 also can be interchanged.
In A810, the count value of resetting printing page count returns to A802.
In this way, corresponding to each printing work terminates to correspond to regulation number of pages every time to carry out the reverse rotation of development sleeve
Printing terminate to carry out the reverse rotation of screw part.Therefore, the reverse rotation of screw part becomes the reverse rotation than development sleeve
Number it is few, even if the case where height of developer reduces, is also seldom in the case where the few printing of the consumption of toner.Cause
This, can prevent the deterioration that image is printed as caused by the reduction of developer height.
(effect, variation of the invention etc.)
According to above embodiment, even if screw part carries out reverse rotation, the developer height of riser portions will not be reduced,
Thus, it is possible to obtain the image forming apparatus that the image deterioration thus constituted is few.
But the composition for making developer rise to specified altitude not only can be change as embodiment described above directly
Diameter is also possible to make other compositions of screw part deformation etc..
In addition, in the above-described embodiment, following situations is illustrated: at the end of printing work, driving sleeve
Dynamic motor reverse rotation makes screw drive motor and sleeve when terminating in printing work and printing number of pages and reached regulation number of pages
Driving motor reverse rotation.
But the present invention is not limited in such case, generally, as long as carrying out the reverse rotation time than sleeve drive motor
The reverse rotation of the few screw drive motor of number.
In general, keeping the defined printing number of pages of screw rod reverse rotation more, during this period, multiple printing work will do it.Cause
This, as long as in fact, corresponding to each printing work terminates to make sleeve drive motor reverse rotation, corresponding to above-mentioned defined printing
Number of pages makes screw drive motor reverse rotation.
In addition, the reverse rotation amount of screw part and development sleeve refer to it is (corresponding to every secondary control inverse in the stipulated time
The time of rotation) carry out reverse rotation control execution number.
Notwithstanding certain embodiments, but these embodiments are only used as example to present, and are not intended to limit hair
Bright range.In fact, the new device and method of described in the text can be implemented with various other ways, other described in the text
Various omissions, displacement, the deformation of device and method, all without departing from the objective of invention.The following claims and their equivalents are intended to
Comprising falling into the variant in the scope of the present invention and objective.
Claims (6)
1. a kind of developing apparatus comprising:
Developing apparatus main body container, developer of the storage comprising toner and carrier；
The developer being set in the developing apparatus main body container is discharged in outlet；
Screw part is set in the developing apparatus main body container, conveys the developer and by the developer from described
Outlet discharge；
Screw drive motor carries out rotation control to the screw part, it is made to carry out positive rotation and reverse rotation；
Developing parts carry the developer, so that the toner is attached to the photoreceptor with sub-image to develop, the development
Component has revolvable development sleeve and fixed magnetite；Sleeve drive motor carries out rotation control to the development sleeve, makes
It carries out positive rotation and reverse rotation；
Limiting component is oppositely arranged with the development sleeve, and the developer that the developing parts are carried is limited to pre-
Determine thickness；And
Motor rotation control unit controls the rotation of the screw drive motor and the sleeve drive motor, so that the spiral shell
The reverse rotation amount of the screw part caused by bar driving motor is less than the development sleeve caused by the sleeve drive motor
Reverse rotation amount,
The reverse rotation amount is that the execution for the control that the screw part or the development sleeve carry out predetermined time reverse rotation is secondary
Number,
The motor rotation control unit, which corresponds to each printing work, terminates described caused by carrying out the sleeve drive motor show
The reverse rotation of shadow sleeve, when the reverse rotation number of pages and the printing work for reaching preset screw part are over,
Carry out the reverse rotation of the screw part caused by the screw drive motor.
2. developing apparatus according to claim 1, which is characterized in that
The motor rotation control unit includes printing page count, counts to the printing number of pages of medium；Screw rod reverse rotation
Number of pages configuration part can preset the number of pages for the medium for making the screw part carry out reverse rotation；And number of pages compares
Portion carries out reverse rotation with the screw part is made to the printing number of pages for the medium that the printing page count is counted
The number of pages of the medium is compared.
3. developing apparatus according to claim 2, which is characterized in that
The motor rotation control unit also includes screw drive motor control unit, is detecting institute by the number of pages comparing section
The printing number of pages for stating the medium that printing page count is counted has reached the institute for making the screw part carry out reverse rotation
When giving an account of the number of pages of matter, Xiang Suoshu screw drive motor sends control signal, so that the screw part carries out reverse rotation.
4. a kind of image forming apparatus comprising:
Development section develops to the electrostatic latent image for being formed in photoreceptor；
The image to develop in the development section is needed on recording medium by transfer section；And
Fixing section is fixed the image being needed in recording medium by the transfer section,
Wherein, the development section includes
Developing apparatus main body container, developer of the storage comprising toner and carrier；Outlet, discharge are set to the development
Developer in apparatus main body container；Screw part is set in the developing apparatus main body container, conveys the developer simultaneously
The developer is discharged from the outlet；
Screw drive motor carries out rotation control to the screw part, it is made to carry out positive rotation and reverse rotation；
Developing parts carry the developer, so that the toner is attached to the photoreceptor with sub-image to develop, the development
Component has revolvable development sleeve and fixed magnetite；
Sleeve drive motor carries out rotation control to the development sleeve, it is made to carry out positive rotation and reverse rotation；
Limiting component is oppositely arranged with the development sleeve, and the developer that the developing parts are carried is limited to pre-
Determine thickness；And
Motor rotation control unit controls the rotation of the screw drive motor and the sleeve drive motor, so that the spiral shell
The reverse rotation amount of the screw part caused by bar driving motor is less than the development sleeve caused by the sleeve drive motor
Reverse rotation amount, the reverse rotation amount is the control that the screw part or the development sleeve carry out predetermined time reverse rotation
Number is executed,
The motor rotation control unit of the development section, which corresponds to each printing work, to be terminated to carry out the sleeve drive motor
The reverse rotation of the caused development sleeve is in each printing work and is more than preset printing number of pages
When, carry out the reverse rotation of the screw part caused by the screw drive motor.
5. image forming apparatus according to claim 4, which is characterized in that
The motor rotation control unit of the development section includes printing page count, counts to the printing number of pages of medium
Number；Screw rod reverse rotation number of pages configuration part can preset the number of pages for the medium for making the screw part carry out reverse rotation；With
And number of pages comparing section, the printing number of pages of the medium that the printing page count is counted and is made the screw part into
The number of pages of the medium of row reverse rotation is compared.
6. image forming apparatus according to claim 5, which is characterized in that
The motor rotation control unit of the development section also includes screw drive motor control unit, is passing through the number of pages ratio
Compared with portion detect the printing number of pages of the medium that the printing page count is counted reached make the screw part into
When the number of pages of the medium of row reverse rotation, Xiang Suoshu screw drive motor send control signal so that the screw part into
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 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106325024A CN106325024A (en) | 2017-01-11 |
| CN106325024B true CN106325024B (en) | 2019-08-09 |
Family
ID=57726724
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510379327.9A Expired - Fee Related CN106325024B (en) | 2015-07-01 | 2015-07-01 | Developing apparatus and image forming apparatus |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN106325024B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2022076372A (en) * | 2020-11-09 | 2022-05-19 | キヤノン株式会社 | Image forming apparatus |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2014139629A (en) * | 2013-01-21 | 2014-07-31 | Kyocera Document Solutions Inc | Developing device and image forming apparatus including the same |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8892011B2 (en) * | 2011-07-29 | 2014-11-18 | Brother Kogyo Kabushiki Kaisha | Developing apparatus having thickness regulating member |
-
2015
- 2015-07-01 CN CN201510379327.9A patent/CN106325024B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| JP2014139629A (en) * | 2013-01-21 | 2014-07-31 | Kyocera Document Solutions Inc | Developing device and image forming apparatus including the same |
Also Published As
| Publication number | Publication date |
|---|---|
| CN106325024A (en) | 2017-01-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103257552B (en) | Image forming apparatus | |
| CN104238319B (en) | Image forming apparatus | |
| CN103376713B (en) | Image processing system | |
| US20130343784A1 (en) | Developing unit and image forming apparatus including the same | |
| CN108693742A (en) | Developing apparatus | |
| JP2005345858A (en) | Development device and image-forming apparatus | |
| JP2008033171A (en) | Toner storage container, developing device and image forming apparatus having them | |
| CN106325024B (en) | Developing apparatus and image forming apparatus | |
| US20080089724A1 (en) | Developing roller, and developing device and image-forming apparatus using the same | |
| JP6014575B2 (en) | Image forming apparatus | |
| JP2006337605A (en) | Image forming apparatus | |
| JP2012037557A (en) | Developing device, process unit and image forming device | |
| JP2011191401A (en) | Sheet forming method and sheet forming apparatus | |
| JP5779706B2 (en) | Developing device and image forming apparatus including the same | |
| JP6170874B2 (en) | Developing device, developing method, and image forming apparatus | |
| US9008524B2 (en) | Image forming device having a toner supply control portion | |
| JP3846465B2 (en) | Developing device and image forming apparatus | |
| JP4385809B2 (en) | Image forming apparatus and image forming method | |
| CN103513540B (en) | Developing apparatus and possess the image processing system of this developing apparatus | |
| JP2006072076A (en) | Developing device and image forming apparatus | |
| JP2007334075A (en) | Image forming apparatus | |
| JP3846466B2 (en) | Developing device and image forming apparatus | |
| JP2006047456A (en) | Developing device and image forming apparatus | |
| JP3846467B2 (en) | Developing device and image forming apparatus | |
| JP6314852B2 (en) | Developing device and image forming apparatus having the same |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| 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: 20190809 |