CN103969978B - Image stabilization control method in image processing system and image processing system - Google Patents
Image stabilization control method in image processing system and image processing system Download PDFInfo
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- CN103969978B CN103969978B CN201410008602.1A CN201410008602A CN103969978B CN 103969978 B CN103969978 B CN 103969978B CN 201410008602 A CN201410008602 A CN 201410008602A CN 103969978 B CN103969978 B CN 103969978B
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Abstract
The present invention provides the image stabilization control method in a kind of image processing system and image processing system.Wherein, image stabilization information storage part stores respectively and is defined table, and the pattern image concentration of the pattern image corresponding to specifying is defined as the adjusted value of the development contrast current potential of the difference of developing bias current potential and charged bias；The change higher limit of the development contrast current potential in image stabilization control during the execution of continuous printing task；And the last setting value of development contrast current potential.During development contrast current potential adjustment portion image stabilization during continuous printing tasks carrying controls, based on the adjusted value acquired by pattern image concentration and in the case of the difference of once setting value exceedes change higher limit, development contrast current potential is adjusted to the difference new adjusted value less than change higher limit.
Description
Technical field
Embodiments of the present invention relate to the image stabilization control method in image processing system and image processing system.
Background technology
In recent years, the requirement for the higher image quality of image processing system improves constantly.Additionally, color image forming device
Universal the most constantly advance.Color image forming device is such as by by Y(yellow), M(magenta), C(cyan), K(black)
The toner of four colors overlaps on transfer printing body successively, thus shows full-colour image on transfer printing body.Therefore, though each tone
Between the color of agent, gray scale only has the least deviation, and the image quality of final image also can produce change.For image processing system
In change over, environmental change, it is also very important for always gray scale being remained fixing.Then, in order to keep ash
Degree property and inquired into various image stabilization control method.
Usually, in this image stabilization controls, claimed as being formed in the transfer belt of image carrier or paper
For test toner labelling (pattern image) of toner speckle (patch), by optical pickocff, (toner adhesion amount passes
Sensor) detect its image color.Further, the detection signal of optically-based sensor, adjust developing bias, for constituting exposure
The intensity driving signal of the LED of device or output timing, be adjusted to the toner image of each color by image forming conditions
Concentration is appropriate.This image stabilization controls when being when the power on of image processing system, the switch of cap etc. with desired
Timing is carried out.
Citation
Patent documentation
Patent documentation 1: Japanese Patent Laid-Open 2013-3342 publication
Summary of the invention
The problem that invention is to be solved
But, in the case of performing continuous printing task after the long-term untapped state of device, due to time long at once
Between placement cause the charged characteristic of the toner in developing unit to change, therefore, from the change of the image that printing starts
Bigger than normal conditions.If start image stabilization the most in this case to control, even the most same continuous printing
Task, before and after also there is the execution that image stabilization controls, the difference of image color become big problem.
Then, in view of above-mentioned problem of the prior art, the problem of the present invention is the long-time image placed is formed dress
Put, even if in the case of starting image stabilization control in the execution of continuous printing task, it is also possible to by image stabilization control
The difference of the image color before and after system execution suppresses less.
Solve the means of problem
According to the image processing system involved by an embodiment of the invention, image formation process portion is based on by figure
Developing bias current potential set in advance and charged bias as the execution of Stabilization Control, perform image on photoreceptor
Formation processes.Pattern image concentration, during the execution that image stabilization controls, detects in image formation processes
The pattern image concentration of the pattern image of the regulation formed.Image stabilization information storage part has stored respectively: definition table, corresponding
The development contrast current potential of the difference of the exposure portion current potential of developing bias current potential and photoreceptor it is defined as in pattern image concentration
Adjusted value；The change upper limit of the development contrast current potential in image stabilization control during the execution of continuous printing task
Value；And the last setting by development contrast current potential determined by the execution of the last image stabilization control
Value.During development contrast current potential adjustment portion image stabilization during the execution of continuous printing task controls, based on figure
In the case of case image color to exceed change higher limit with reference to the difference of the adjusted value acquired by definition table and last setting value,
Development contrast current potential is adjusted to the difference new adjusted value less than change higher limit.
Accompanying drawing explanation
Fig. 1 is the cross section being monolithically fabricated example illustrating the image processing system involved by an embodiment of the invention
Figure.
Fig. 2 is the outline of the relation illustrating the equipment controlled in the image processing system shown in Fig. 1 for image stabilization
Figure.
Fig. 3 is to illustrate that the image processing system shown in Fig. 1 controls the block diagram of the function possessed about image stabilization.
Fig. 4 is the flow chart of the flow process illustrating the image stabilization control in the image processing system shown in Fig. 1.
Fig. 5 is the figure of the execution example illustrating the image stabilization control in the image processing system shown in Fig. 1.
Detailed description of the invention
Below, with reference to the accompanying drawings embodiments of the present invention are described in detail.Fig. 1 is the enforcement illustrating the present invention
The sectional view being monolithically fabricated example of the image processing system involved by mode.As it is shown in figure 1, the image of present embodiment forms dress
Putting is the multi-function peripheral (MFP:Multifunction Peripheral) of four series systems.Image processing system has
Having: image forming part 1, output image information is as the output image being such as referred to as hard copy or printout；Paper supplies
To portion 2, the paper (output medium) to the arbitrary dimension that the supply of this image forming part 1 exports for image；And image reading
Portion 3, its be using in image forming part 1 as image formed object image information as view data from object (
Face, referred to as original copy) scanning device that obtains.Image reading unit 3 is by for loading the transparent glass platen 3a of original copy, for irradiating
The light source 3b of original copy and constituting from the reflecting mirror 3c of the light of original copy reflection for reflection.
Additionally, the upper side at image processing system is provided with auto document feeder (ADF:Auto Document
Feeder) 4.In the case of original copy is lamellar, the reading of the auto document feeder 4 image information in image reading unit 3
After taking end, the original copy finishing to read is discharged to drain position from reading position, and next original copy is guided to reading
Fetch bit is put.Additionally, be provided with the beginning for indicating the image in image forming part 1 to be formed, image on image processing system
Reading part 3 reads the control panel 5 that the image information of original copy starts.
Below, the composition of image forming part 1 is illustrated.Upper side at image forming part 1 has been arranged side by side tone
Agent box 10Y～10K.Toner cartridge 10Y～10K is accommodated with Y(yellow in the way of each receiving a kind of color), M(magenta),
C(cyan), K(black) toner, developing unit 14Y～14K described later is fed toner successively.Additionally, toner cartridge
10Y～10K can dismount relative to the box maintaining body 10 of the face side being arranged on image forming part 1.
Image forming part 1 is made up of four image formation units split according to Y, M, C, K colors, has: as being used for
Keep photoconductor drum 11Y～11K of the image carrier of latent image；Used according to write by irradiating to these photoconductor drums 11Y～11K
The exposure device 12 that view data and the laser modulated are constituted to LED12Y～12K forming latent image；Make photoconductor drum 11Y～
Homogeneous charged Charging system 13Y～13K of 11K；For making to be formed at the development of the developable latent image on photoconductor drum 11Y～11K
Device 14Y～14K；By the image of the toner (developing agent) of development on photoconductor drum 11Y～11K (hereinafter referred to as " tone
Agent image ") transfer belt 15 that keeps is carried out with laminated arrangement；And for removing the residual on photoconductor drum 11Y～11K respectively
Photoreceptor cleaner 16Y～16K of the attachments such as toner.
And, image forming part 1 has: transfer device 17, is transferred in by the toner image being layered in transfer belt 15
Such as not through the common paper process especially or be on the lamellar output medium such as OHP sheet of transparent resin sheet；
And fixing device 18, the toner image being transferred to be transferred on medium is fixed on output medium.
Driving roller 15a that transfer belt 15 is used for making transfer belt 15 drive, the backing roll 15b of secondary transfer printing, for making
The tension force put in transfer belt 15 is set up by the jockey pulley 15c fixed.Additionally, across transfer belt 15 and driving roller 15a
On relative position, transfer belt cleaning device 15d abuts configuration with transfer belt 15.
At the position (hereinafter, referred to as " primary transfer portion ") that transfer belt 15 abuts with photoconductor drum 11Y～11K, with from one
The mode that photoconductor drum 11Y～11K is crimped by the rear side of secondary transfer section, is each configured with transfer roll 17Y～17K.
Additionally, transfer device 17(is hereinafter, referred to as " secondary transfer section ") with the rear side (inner side) being arranged at transfer belt 15
Backing roll 15b relative, abut configuration in the toner loading end side (outside) of transfer belt 15 with transfer belt 15.
Each photoconductor drum 11Y～11K keeps will be by being accommodated with yellow (Y), magenta (M), cyan (C), black respectively
(K) developing unit 14Y～14K of the toner of color realizes visualizing the electrostatic latent image (toner of the color of (development)
Image), but, the order of its arrangement is the order being defined as regulation according to image formation process, the characteristic of toner.Turn
Print with the 15 each face keeping developing unit 14Y～14K of photoconductor drum 11Y～11K and correspondence to be formed according to formation order
The toner image of color.
Additionally, be configured between the 4th website (station) and the secondary transfer section of most downstream in primary transfer portion, if
It is equipped with toner adhesion amount sensor 20.The sensor that toner adhesion amount sensor 20 is discussed further below: it is to transfer belt 15
On irradiation luminous amount P of toner0LED light, detect from toner image reflection light quantity P1, based on P0And P1Relation come
Detection toner adhesion amount, carries out the correction of the image color of image formation unit in each color.
The outputs such as paper, when transfer device 17 secondary transfer printing toner image, are situated between by paper supply unit 2 with the timing of regulation
Matter supplies to transfer device 17.It is arranged at the output medium of the box storage arbitrary dimension of multiple box insert port 31.According to image shape
The action become, pickup roller 32 takes out output medium.The toner image that the size of output medium and image forming part 1 are formed
Size is corresponding.Separating mechanism 33 for the output medium stoping pickup roller 32 to take out from box be two or more than.Multiple conveyings
The output medium being limited to one by separating mechanism 33 is carried by roller 34 to adjustment roller 35.Adjustment roller 35 and transfer device 17 are from turning
Output medium is as one man delivered to transfer device 17 and contacts with transfer belt 15 by the print timing with 15 secondary transfer printing toner images
Transfer position.Additionally, box insert port 31, pickup roller 32 and separating mechanism 33 are prepared with multiple as required, box can be appointed
Meaning is installed on different insert ports.
Fixing device 18 has fixing roller 18a and backer roll 18b in the downstream in ADF direction.Transferred with toner image
The output medium of (developer image) such as makes toner figure by being warming up to the fixing roller 18a and backer roll 18b of 180 DEG C
As melted, thus fixing image information.
Fig. 2 is relation general being shown in the image processing system shown in Fig. 1 the device controlled for image stabilization
Sketch map.
Controlling device 101 is the control device for controlling to constitute the action of each several part of image processing system.As control
Device 101 processed can use CPU(Central Processing Unit: CPU), can perform equal with CPU
MPU(Micro Processing Unit: the microprocessing unit of calculation process) etc..Control device 101 by I/O port 108
Obtain the toner adhesion amount detected by toner adhesion amount sensor 20, based on this sensor values and storage device 102
Information controls charged bias voltage value, developing bias value and the transfer bias of the condition processed as image formation by each color
Magnitude of voltage etc..Charged bias voltage is the voltage supplied to Charging system 13Y～13K from live power device 130, this band Denso
Put 13Y～13K for paying the current potential (surface potential) of regulation to each photoconductor drum 11Y～11K.Developing bias voltage be from
The voltage of the developer roll supply that developing bias supply device 140 is comprised to developing unit 14Y～14K.Transfer bias voltage is
The voltage supplied to transfer roll 17Y～17K from transfer bias supply unit 170, this transfer roll 17Y～17K is from transfer belt 15
Photoconductor drum 11Y～11K is crimped by rear side.The control of above-mentioned voltage with corresponding to view data (print data) by exposing
The laser power that electro-optical device 12 provides is carried out independently.
Below, control to be briefly described to the image stabilization controlling device 101.Control device 101 be judged as completely
Foot image stabilization control entry condition in the case of, control for Charging system 13Y～13K, developing unit 14Y～14K,
The high pressure of transfer roll (primary transfer device) 17Y～17K applies.Then, exposure device 12 photoconductor drum 11Y～11K is entered
Row exposure, thus on photoconductor drum 11Y～11K, form electrostatic latent image, developing unit 14Y～14K it is developed, from
And form toner image.The toner image being formed on photoconductor drum 11Y～11K is by turning as primary transfer device
Print roller 17Y～17K is transferred in transfer belt 15, and is provided by the position of toner adhesion amount sensor 20.Control dress
Put 101 detecting, by toner adhesion amount sensor 20, the toner image passed through and be judged as that the toner not being appropriate is attached
In the case of the amount of wearing, change puts on Charging system 13Y～13K and the voltage of developing unit 14Y～14K.Further, repeat identical
Action until obtaining appropriate toner adhesion amount.
Storage device 102 is to store for performing the program of each process of image processing system, definition data, various sensing
The storage device of the detected value etc. of device, such as by RAM(Random Access Memory: random access memory), ROM
(Read only Memory: read only memory), DRAM(Dynamic Random Access Memory: dynamic randon access
Memorizer), SRAM(Static Random Access Memory: static RAM), VRAM(Video RAM:
Video RAM), flash memory etc. constitutes.
Fig. 3 is to illustrate that the image processing system shown in Fig. 1 controls the block diagram of the function possessed about image stabilization.As
Shown in this figure, image processing system possess image formation process portion 201, count section 202, image stabilization information storage part 203,
Image stabilization controls judging part 204, pattern image concentration 205 and development contrast current potential adjustment portion 206.
Image formation process portion 201 is developing bias current potential set in advance based on the execution controlled by image stabilization
And charged bias, photoconductor drum 11Y～11K performs image formation and processes.It is formed in image formation processes
Image in transfer belt 15 has and paper carries out secondary transfer printing prints image and do not carry out the image stabilization control of secondary transfer printing
Two kinds of pattern image processed.The accumulation lettering that count section 202 counts respectively, store in image formation process portion 201 is opened
Number, corresponding to the lettering number of lettering movement time and print job.
Image stabilization information storage part 203 stores the image being defined table, performing in continuous printing task process respectively
The execution that change higher limit A of the development contrast current potential in Stabilization Control and the last image stabilization control
Last setting value Vc0 of development contrast current potential, wherein, definition table is corresponding to pattern image concentration 205 detection
Pattern image concentration is defined as the development contrast of the difference of the exposure portion current potential of developing bias current potential and photoconductor drum 11Y～11K
The adjusted value Vc1 of degree current potential.In the present embodiment, change higher limit A of development contrast current potential is defined as the last time and sets
Less than the 10% of definite value Vc0.
There is the image of two patterns for the following stated steady additionally, image stabilization information storage part 203 stores respectively
The entry condition information that fixedization controls, i.e., simplifying mode, wherein, development contrast current potential adjustment portion 206 is dense based on pattern image
Degree, with reference to definition table, is only adjusted to adjusted value once by development contrast current potential；And integrated pattern, wherein, it is repeated aobvious
The adjustment of shadow contrast current potential, until the pattern image concentration of pattern image concentration 205 detection reaches normal concentration.Open
Dynamic conditional information is preferably defined as: reach when image processing system has been connected power supply or beyond continuous printing task
In the case of the accumulation printing number of regulation, perform integrated pattern, during the execution of continuous printing task, due to in short-term
Between can terminate to process, thus perform simplifying mode.
Image stabilization controls accumulation lettering number, the image processing system that judging part 204 is counted based on count section 202
The connection situation etc. of power supply, it may be judged whether meet each image stabilization control of storage in image stabilization information storage part 203
System entry condition, and based on this judged result control image formation process portion 201, pattern image concentration 205 with
And the action in development contrast current potential adjustment portion 206.
Pattern image concentration 205, during the execution that image stabilization controls, detects and processes in image formation
In the pattern image concentration of the pattern image of regulation that is formed in transfer belt 15.Development contrast current potential adjustment portion 206 is even
During image stabilization during the execution of continuous print job controls, to believe with reference to image stabilization based on pattern image concentration
The adjusted value Vc1 acquired by definition table and the poor Δ Vc of last setting value Vc0 in breath storage part 203 exceed change higher limit
In the case of A, the development contrast current potential Vc of printing is adjusted to the poor Δ Vc new adjustment less than change higher limit A
Value.
Fig. 4 is the flow chart of the flow process illustrating the image stabilization control in the image processing system shown in Fig. 1.
In Act101, image stabilization control judging part 204 counted based on count section 202 accumulation lettering number,
The connection situation etc. of the power supply of image processing system, it may be judged whether meet and be stored in image stabilization information storage part 203
The entry condition that each image stabilization controls.Here, in the case of being judged as meeting entry condition (Act101: yes), then enter
Enter Act102.On the contrary, in the case of being judged as being unsatisfactory for entry condition (Act101: no), then Act115 is entered.
In Act102, development contrast current potential adjustment portion 206 believes with reference to image stabilization based on pattern image concentration
The definition table of breath storage part 203, determines the adjusted value Vc1 of development contrast current potential.
In Act103, it is that continuous printing is appointed that image stabilization control judging part 204 to judge that image stabilization controls whether
It is engaged in executory startup.Here, in the case of the startup in being judged as YES continuous printing tasks carrying (Act103: yes), then
Enter Act104.On the contrary, when being judged as it not being startup in continuous printing tasks carrying, being i.e. power on or even
In the case of the startup of the accumulation printing number having reached regulation in the print job outside continuous print job (Act103: no),
Then enter Act114.
In Act104, continuous printing task is interrupted in image formation process portion 201.Such as, control at image stabilization
Starting number condition is in the case of number 100 is printed in accumulation, startup 200 when being 50 if in accumulation printing number
Continuous printing task, then the printing the 50th, the 150th terminates to start image stabilization control afterwards, and interrupts continuously
Print job.
In Act105, development contrast current potential adjustment portion 206 is with reference to image stabilization information storage part 203, in acquirement
Development contrast current potential Vc0 determined by the execution that image stabilization once controls.
In Act106, development contrast current potential adjustment portion 206 calculates the adjusted value Vc1 and upper of development contrast current potential
The poor Δ Vc=|Vc1-Vc0| of development contrast current potential Vc0 determined by the control of secondary image stabilization.
In Act107, development contrast current potential adjustment portion 206, with reference to image stabilization information storage part 203, obtains figure
Change higher limit A as the development contrast current potential in Stabilization Control.Here, if image stabilization control in development contrast
Change higher limit A of degree current potential is the 5%(A=Vc0/ of development contrast current potential Vc0 determined by last image stabilization controls
100 × 5) value.
In Act108, development contrast current potential adjustment portion 206 judges whether the poor Δ Vc calculated in Act106 is development
Below change higher limit A of contrast current potential.Here, it is being judged as that difference Δ Vc is change higher limit A of development contrast current potential
In the case of below (Act108: yes), then enter Act109.On the contrary, it is being judged as that difference Δ Vc exceedes development contrast current potential
In the case of change higher limit A (Act108: no), then enter Act110.
In Act109, the development contrast current potential Vc of printing is set as by development contrast current potential adjustment portion 206
The adjusted value Vc1 of development contrast current potential determined by Act102, carries out the adjustment of development contrast current potential.
In Act110, development contrast current potential adjustment portion 206 judges development contrast electricity determined by Act102
Whether the adjusted value Vc1 of position exceedes last setting value Vc0.Here, surpass at the adjusted value Vc1 being judged as development contrast current potential
Cross in the case of last setting value Vc0 (Act110: yes), then enter Act111.On the contrary, it is being judged as development contrast current potential
Adjusted value Vc1 be in the case of below last setting value Vc0 (Act110: no), then enter Act112.
In Act111, it is Vc=that development contrast current potential adjustment portion 206 calculates the development contrast current potential Vc of printing
Vc0+A, carries out the adjustment of development contrast current potential.
In Act112, it is Vc=that development contrast current potential adjustment portion 206 calculates the development contrast current potential Vc of printing
Vc0-A, carries out the adjustment of development contrast current potential.
In Act113, image formation process portion 201 is based on adjusted printing in Act109, Act111 or Act112
Development contrast current potential Vc, be again started up continuous printing task, enter Act115.
In Act114, development contrast current potential Vc is remained last setting by development contrast current potential adjustment portion 206
Value Vc0, and enter Act115.
In Act115, image stabilization controls judging part 204 and judges whether executory task terminates.Here, sentencing
Breaking (Act115: yes) in the case of being over for executory task, end processes.On the contrary, it is being judged as executory
Be engaged in unclosed in the case of (Act115: no), then return Act101.
Fig. 5 is the figure of the execution example illustrating the image stabilization control in the image processing system shown in Fig. 1.At this figure
In, the state change of the epimere in figure is illustrated that situation, the shape of hypomere that development contrast current potential reduces when printing starts
State change is illustrated that the situation that development contrast current potential increases when printing starts.
First, the state change to epimere illustrates.Fig. 5 (A) shows with image stabilization control during power on
The execution of system and the development contrast current potential Vc0=400 that determines start the adjustment of development contrast current potential when printing.
Fig. 5 (B) show the continuous printing task when Fig. 5 (A) execution way in start primary image
Stabilization Control and toner adhesion amount many in the case of the adjustment of development contrast current potential.Here, suppose that development contrast
Current potential adjustment portion 206 obtains 350 tune being used as making the toner adhesion amount development contrast current potential consistent with desired value
Whole value Vc1.Determined by last image stabilization controls, last setting value Vc0 of development contrast current potential is 400,
Therefore, change higher limit A of development contrast current potential during image stabilization controls be 20(A=Vc0/100 × 5=400/100 ×
5).Additionally, the poor Δ Vc of the adjusted value Vc1 of last setting value Vc0 of development contrast current potential and development contrast current potential is
50(Δ Vc=400-350).Accordingly, because difference Δ Vc is more than change higher limit A, so calculate the development contrast of printing
Current potential Vc is 380(Vc=Vc0-A=400-20), and be adjusted.
Fig. 5 (C) shows and starts second time when Fig. 5 (B) in the execution way of same continuous printing task
The adjustment of the development contrast current potential in the case of image stabilization control.Here, suppose that development contrast current potential adjustment portion 206
Obtain the 370 adjusted value Vc1 being used as making the toner adhesion amount development contrast current potential consistent with desired value.Due to upper
Determined by image stabilization control once, last setting value Vc0 of development contrast current potential is 380, and therefore, image is steady
Change higher limit A of the development contrast current potential in fixedization control is 19(A=Vc0/100 × 5=380/100 × 5).Additionally, it is aobvious
The poor Δ Vc of last setting value Vc0 of shadow contrast current potential and the adjusted value Vc1 of development contrast current potential is 10(Δ Vc=
380-370).Accordingly, because difference Δ Vc is less than A, so the development contrast current potential Vc of printing is adjusted to Vc=Vc1=370.
Between Fig. 5 (B) and Fig. 5 (C), the variation of development contrast current potential is suppressed the least, therefore, when Fig. 5 (B)
The paper of rear printing the and initially difference of the image color of the paper of printing is suppressed the least when Fig. 5 (C).
Then, the state change to hypomere illustrates.Fig. 5 (D) shows the continuous printing when Fig. 5 (A)
The performing of task way starts primary image stabilization control and toner adhesion amount few in the case of development contrast
The adjustment of current potential.Here, suppose that development contrast current potential adjustment portion 206 obtain 460 be used as make toner adhesion amount with
The adjusted value Vc1 of the development contrast current potential that desired value is consistent.Develop determined by last image stabilization controls right
It is 400 than last setting value Vc0 of degree current potential, therefore, in the change of the development contrast current potential in image stabilization control
Limit value A is 20(A=Vc0/100 × 5=400/100 × 5).Additionally, last setting value Vc0 of development contrast current potential and development
The poor Δ Vc of the adjusted value Vc1 of contrast current potential is 60(Δ Vc=460-400).Accordingly, because difference Δ Vc is more than A, so will print
The development contrast current potential Vc of brush is adjusted to 420(Vc=Vc0+A=400+20).
Fig. 5 (E) shows and starts second time when Fig. 5 (D) in the execution way of same continuous printing task
The adjustment of the development contrast current potential in the case of image stabilization control.Here, suppose that development contrast current potential adjustment portion 206
Obtain the 440 adjusted value Vc1 being used as making the toner adhesion amount development contrast current potential consistent with desired value.Due to upper
Determined by image stabilization control once, last setting value Vc0 of development contrast current potential is 420, and therefore, image is steady
Change higher limit A of the development contrast current potential in fixedization control is 21(A=Vc0/100 × 5=420/100 × 5).Additionally, it is aobvious
The poor Δ Vc of last setting value Vc0 of shadow contrast current potential and the adjusted value Vc1 of development contrast current potential is 20(Δ Vc=
440-420).Accordingly, because difference Δ Vc is less than A, so the development contrast current potential Vc of printing is adjusted to 440(Vc=
Vc1).Between Fig. 5 (D) and Fig. 5 (E), the variation of development contrast current potential is suppressed the least, therefore, at the shape of Fig. 5 (D)
The difference of the image color of the paper finally printed under state and the paper initially printed when Fig. 5 (E) is suppressed the least.
So, according to the image processing system involved by present embodiment, the image stabilization control in continuous printing way
During the execution made, it is not that the target of the directly development contrast current potential that reflection obtains from the toner adhesion amount of pattern image is adjusted
Whole value, but confirm the difference of image-forming condition determined by the execution that the image stabilization with the last time controls, with steady at image
Before and after fixedization controls, image-forming condition will not once change the biggest mode, and the amount of change of image-forming condition is set restriction.Therefore,
Even if in the case of starting image stabilization control during the execution of continuous printing task, it is also possible to by image stabilization control
The difference of the image color before and after the execution of system suppresses less.
Above, several embodiments of the invention is illustrated, but, these embodiments are only used as example, and
The non-scope for limiting invention.These new embodiments can also be implemented by other various modes, without departing from sending out
In the range of bright objective, various omission can be carried out, replace, change.These embodiments and deformation thereof are included in the model of invention
Enclose and in objective, be included in the range of the invention described in claims and equivalent thereof meanwhile.
Description of reference numerals
1 image forming part
11,11Y, 11M, 11C, 11K photoconductor drum
13,13Y, 13M, 13C, 13K Charging system
14,14Y, 14M, 14C, 14K developing unit
15 transfer belt
15d transfer belt cleaning device
16,16Y, 16M, 16C, 16K photoreceptor cleaner
17 transfer devices
17Y, 17M, 17C, 17K transfer roll
20 toner adhesion amount sensors
101 control device 102 stores device
201 image formation process portion 202 count section
203 image stabilization information storage parts
204 image stabilizations control judging part
205 pattern image concentration
206 development contrast current potential adjustment portions.
Claims (7)
1. an image processing system, it is characterised in that including:
Image formation process portion, developing bias current potential set in advance and band based on the execution controlled by image stabilization
Electrical bias current potential, performs image formation on photoreceptor and processes；
Pattern image concentration, during the execution that described image stabilization controls, detection is at described image formation
The pattern image concentration of the pattern image of the regulation formed in reason；
Image stabilization information storage part, storage has respectively: definition table, is defined as described corresponding to described pattern image concentration
The adjusted value of the development contrast current potential of the difference of the exposure portion current potential of developing bias current potential and described photoreceptor；Continuous printing task
Execution during described image stabilization control in the change higher limit of described development contrast current potential；And pass through
The last setting value of described development contrast current potential determined by the execution that nearly image stabilization once controls；And
Development contrast current potential adjustment portion, the described image stabilization during the execution of described continuous printing task controls
In, come based on described pattern image concentration with reference to the described adjusted value acquired by described definition table and described on once setting value
Difference exceed described change higher limit in the case of, described development contrast current potential is adjusted by described development contrast current potential adjustment portion
The whole new adjusted value being less than described change higher limit for described difference,
Wherein, described image stabilization information storage part stores the image stabilization of two patterns for the following stated respectively
The entry condition information controlled, i.e., simplifying mode, wherein, described development contrast current potential adjustment portion is based on described pattern image
Concentration is come with reference to described definition table, only described development contrast current potential is adjusted to described adjusted value once；And integrated pattern,
Wherein, described adjustment is repeated, until the described pattern image concentration of described pattern image concentration detection reaches rule
Determine concentration.
Image processing system the most according to claim 1, it is characterised in that:
In described image stabilization information storage part, the change higher limit of described development contrast current potential is defined as on described
Less than the 10% of setting value.
Image processing system the most according to claim 1 and 2, it is characterised in that also include:
Count section, the accumulation lettering number count respectively, stored in described image formation process portion, corresponding to lettering movement time
And the lettering number of print job.
Image processing system the most according to claim 3, it is characterised in that also include:
Image stabilization controls judging part, the described accumulation lettering number counted based on described count section or described image and is formed
The connection situation of the power supply of device, it may be judged whether meet each image stabilization of storage in described image stabilization information storage part
The entry condition controlled, and control described image formation process portion, described pattern image concentration based on judged result
And the action in described development contrast current potential adjustment portion.
5. the image stabilization control method in an image processing system, it is characterised in that have:
Image forming step, the developing bias current potential set in advance and charged based on the execution controlled by image stabilization
Bias, performs image formation on photoreceptor and processes；
Pattern image concentration detecting step, during the execution that described image stabilization controls, detection is formed at described image
The pattern image concentration of the pattern image of the regulation formed in process；
Adjusted value acquisition step, carrys out the definition table with reference to regulation based on the described pattern image concentration detected, obtains as institute
State the adjusted value of the development contrast current potential of the difference of the exposure portion current potential of developing bias current potential and described photoreceptor；And
Development contrast current potential set-up procedure, during the described image stabilization during the execution of continuous printing task controls,
At described adjusted value with by described development contrast electricity determined by the execution of the last described image stabilization control
In the case of the difference of the last setting value of position exceedes the change higher limit of regulation, described development contrast current potential is adjusted to institute
State the difference new adjusted value less than described change higher limit,
Wherein, the definition table of described regulation is stored in the image stabilization information storage part in described image processing system,
Described image stabilization information storage part stores the image stabilization of two patterns for the following stated respectively and controls
Entry condition information, i.e., simplifying mode, wherein, come with reference to described definition table based on described pattern image concentration, only once will
Described development contrast current potential is adjusted to described adjusted value；And integrated pattern, wherein, described adjustment is repeated, until institute
State pattern image concentration and reach normal concentration.
Image stabilization control method in image processing system the most according to claim 5, it is characterised in that
The change higher limit of described development contrast current potential is predefined less than 10% into described last setting value.
Image stabilization control method in image processing system the most according to claim 5, it is characterised in that also have
Have:
Image stabilization controls to judge step, connecing of the power supply of accumulation lettering number based on counting or described image processing system
Logical situation, it may be judged whether meet the trip bar that in described image stabilization information storage part, each image stabilization of storage controls
Part, to control the action of each several part in described image processing system based on judged result.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2013011412A JP2014142509A (en) | 2013-01-24 | 2013-01-24 | Image forming apparatus and image stabilization control method in image forming apparatus |
| JP2013-011412 | 2013-01-24 |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103969978A CN103969978A (en) | 2014-08-06 |
| CN103969978B true CN103969978B (en) | 2016-10-05 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201410008602.1A Expired - Fee Related CN103969978B (en) | 2013-01-24 | 2014-01-08 | Image stabilization control method in image processing system and image processing system |
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| Country | Link |
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| JP (1) | JP2014142509A (en) |
| CN (1) | CN103969978B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3250963B1 (en) | 2015-01-29 | 2022-03-16 | HP Indigo B.V. | Electrostatic printing system with charged voltage dependent on developer voltage |
Family Cites Families (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH05323743A (en) * | 1992-05-19 | 1993-12-07 | Minolta Camera Co Ltd | Image forming device |
| JP4363035B2 (en) * | 2002-12-16 | 2009-11-11 | 富士ゼロックス株式会社 | Image forming apparatus |
| JP4089681B2 (en) * | 2004-10-20 | 2008-05-28 | コニカミノルタビジネステクノロジーズ株式会社 | Image forming apparatus |
| JP5064833B2 (en) * | 2007-02-23 | 2012-10-31 | キヤノン株式会社 | Image forming apparatus |
| JP2013003342A (en) * | 2011-06-16 | 2013-01-07 | Konica Minolta Business Technologies Inc | Image forming apparatus and image stabilizing-control method |
-
2013
- 2013-01-24 JP JP2013011412A patent/JP2014142509A/en active Pending
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| JP2014142509A (en) | 2014-08-07 |
| CN103969978A (en) | 2014-08-06 |
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