CN106970510A - Image processing system and control device - Google Patents
Image processing system and control device Download PDFInfo
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- CN106970510A CN106970510A CN201610024174.0A CN201610024174A CN106970510A CN 106970510 A CN106970510 A CN 106970510A CN 201610024174 A CN201610024174 A CN 201610024174A CN 106970510 A CN106970510 A CN 106970510A
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- signal
- laser
- timing
- timing signal
- polygon mirror
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/04—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material
- G03G15/043—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure
- G03G15/0435—Apparatus for electrographic processes using a charge pattern for exposing, i.e. imagewise exposure by optically projecting the original image on a photoconductive recording material with means for controlling illumination or exposure by introducing an optical element in the optical path, e.g. a filter
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- G—PHYSICS
- G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
- G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
- G03G15/00—Apparatus for electrographic processes using a charge pattern
- G03G15/22—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20
- G03G15/23—Apparatus for electrographic processes using a charge pattern involving the combination of more than one step according to groups G03G13/02 - G03G13/20 specially adapted for copying both sides of an original or for copying on both sides of a recording or image-receiving material
- G03G15/231—Arrangements for copying on both sides of a recording or image-receiving material
- G03G15/232—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member
- G03G15/234—Arrangements for copying on both sides of a recording or image-receiving material using a single reusable electrographic recording member by inverting and refeeding the image receiving material with an image on one face to the recording member to transfer a second image on its second face, e.g. by using a duplex tray; Details of duplex trays or inverters
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Facsimile Scanning Arrangements (AREA)
Abstract
A kind of image processing system and control device, it includes：First signal generation portion, generates the first timing signal；Secondary signal generating unit, generates second timing signal；Laser control signal output section, exports the laser control signal generated based on first timing signal；Laser Driven portion, laser is exported based on the laser control signal to polygon mirror；Beam sensor, detects the laser reflected by the polygon mirror；Measurement portion, based on the timing that the laser is detected by the beam sensor, obtains the rotating speed data for the rotary speed for representing the polygon mirror；And output control part, first signal generation portion is changed the frequency of first timing signal.During first signal generation portion changes the frequency of first timing signal, the laser control signal output section exports the laser control signal generated based on the second timing signal to the Laser Driven portion.
Description
Technical field
The present invention relates to image processing system and control device.
Background technology
The image processing system of electrofax mode has the fuser being fixed on toner on sheet material.
When sheet material is by fuser, somewhat shunk exposed to high temperature.
Possess dual-side printing unit image processing system can by one action to the surface of sheet material and
Printed at the back side.Generally, the printing at the back side be by toner to the surface of sheet material it is fixing after immediately
Carry out.Therefore, back up can be shunk by sheet material and be influenceed.If image processing system is not considering
Sheet material carries out back up in the case of shrinking, then image multiplying power can occurs on the surface and the back side of sheet material
Difference.
Image difference of magnification can be by the size in surface and back side adjustment printing image to eliminate.Make
For the method for the size of adjustment printing image, it may be considered that timing signal (for example, pixel clock)
The change of the rotary speed of change and polygon mirror.But, in the case of making in this way,
When being switched to back up by surface printing, or, when being switched to surface printing by back up,
Need the stable confirmation processing of the rotary speed of hand-off process and polygon mirror for being timed signal.
If expending the time in these processing, the productivity ratio printed can be substantially reduced.
The content of the invention
The image processing system of one mode, including：First signal generation portion, generates the first timing signal；
Secondary signal generating unit, generates second timing signal；Laser control signal output section, output is based on institute
The laser control signal stated the first timing signal and generated；Laser Driven portion, based on the laser controlling
Signal exports laser to polygon mirror；Beam sensor, what detection was reflected by the polygon mirror
The laser；Measurement portion, based on the timing that the laser is detected by the beam sensor, is obtained
Represent the rotating speed data of the rotary speed of the polygon mirror；And output control part, make institute
The frequency that the first signal generation portion changes first timing signal is stated, in first signal generation portion
During the frequency for changing first timing signal, the laser control signal output section is swashed to described
The laser control signal that the output of optical drive portion is generated based on the second timing signal.
The control device of another way, including：First signal generation portion, generates the first timing signal；
Secondary signal generating unit, generates second timing signal；Laser control signal output section, will be based on described
First timing signal and the laser control signal that generates is exported to Laser Driven portion, the Laser Driven portion to
Polygon mirror exports laser；Measurement portion, based on the timing that the laser is detected by beam sensor,
The rotary speed of the polygon mirror is measured, beam sensor detection is anti-by the polygon mirror
The laser penetrated；And output control part, first signal generation portion is changed described first and determine
When signal frequency, change the phase of the frequency of first timing signal in first signal generation portion
Between, the laser control signal output section is believed to Laser Driven portion output based on the described second timing
Number and generate laser control signal.
Brief description of the drawings
Fig. 1 is the block diagram of image processing system.
Fig. 2 is the figure of the composition for the Printing Department for showing embodiment one.
Fig. 3 A are the top views of the exposure portion of embodiment one.
Fig. 3 B are the side views of the exposure portion of embodiment one.
Fig. 4 A are the block diagrams of the signal processing part of embodiment one.
Fig. 4 B are the block diagrams of laser control signal output section.
Fig. 5 is the flow chart of the image multiplying power adjustment processing of embodiment one.
Fig. 6 is the flow chart of the timing signal exception processes of embodiment one.
Fig. 7 is the flow chart of the rotary speed exception processes of embodiment one.
Fig. 8 is the figure of the composition for the Printing Department for showing embodiment two.
Fig. 9 A are the top views of the exposure portion of embodiment one.
Fig. 9 B are the side views of the exposure portion of embodiment one.
Figure 10 is the block diagram of the signal processing part of embodiment one.
Figure 11 is the flow chart of the image multiplying power adjustment processing of embodiment one.
Figure 12 is the flow chart of the timing signal exception processes of embodiment one.
Embodiment
Hereinafter, referring to the drawings, the mode for carrying out an invention is illustrated.In addition, in figure, it is right
Identical or equivalent part mark identical reference.
(embodiment one)
Fig. 1 is the block diagram of image processing system 1.Image processing system 1 be duplicator, printer,
Facsimile machine etc. possesses the device of printing functionality.Image processing system 1 possesses dual-side printing unit, can be with
The two sides of sheet material is printed by one action.As shown in figure 1, image processing system 1 possesses
Image processing part 10, Printing Department 20, signal processing part 30, control unit 40.
Image processing part 10 is made up of processing units such as processors.Image processing part 10 will be obtained from user
The view data taken is converted to data mode set in advance, is exported to signal processing part 30.With
Under explanation in, by the data referred to as picture number exported from image processing part 10 to signal processing part 30
According to D.
Printing Department 20 is that the toner image formed on the circumferential surface by photosensitive drums is directly transferred in piece
The printing equipment of direct transfer modes on material S.Fig. 2 is an example of the composition of Printing Department 20.
Printing Department 20 possesses image formation station 21, fixing section 22, exposure portion 23.
Image formation station 21 is the transfer device that toner image is transferred to sheet material S.Image is formed
Stand 21 possess photosensitive drums 211, it is powered charger 212, developing apparatus 213, transfer roll 214, clear
Clean device 215.
Photosensitive drums 211 are the image-carriers of drum type.The circumferential surface of photosensitive drums 211 is configured with powered fill
Electrical equipment 212, developing apparatus 213, transfer roll 214 and cleaning device 215.
Powered charger 212 is the charged device for making photosensitive drums 211 powered.Powered charger 212 makes sense
The circumferential surface uniform charged of light drum 211.
Developing apparatus 213 is the device in the circumferential surface formation toner image of photosensitive drums 211.It is aobvious
213 pairs of image device is formed with the circumferential surface supply toner of the photosensitive drums 211 of electrostatic latent image.Thus,
Toner is adsorbed on electrostatic latent image, so that in the circumferential surface formation toner image of photosensitive drums 211.
Transfer roll 214 is that the toner image of the circumferential surface of photosensitive drums 211 is transferred on sheet material S
Bias roller.Pass through supply unit (not shown) with the voltage of the powered polarity reversed polarity of toner image
It is applied on transfer roll 214.The toner image of the circumferential surface of photosensitive drums 211 passes through the reversed polarity
Voltage be transferred on sheet material S.
Cleaning device 215 is the device for the circumferential surface for cleaning photosensitive drums 211.Cleaning device 215 from
The circumferential surface of photosensitive drums 211 removes residual toner.
Fixing section 22 is to be transferred to the device that sheet material S toner image is fixed on sheet material S.
Fixing section 22 is by applying the heating roller 221 of heat to sheet material S and applying stressed pressure to sheet material S
Power roller 222 is constituted.Be transferred to heat that sheet material S toner image applied by heating roller 221 and
Pressure roll 222 apply pressure and be fixed on sheet material S.
Exposure portion 23 is the device in the circumferential surface formation electrostatic latent image of photosensitive drums 211.Exposure portion
23 based on the laser control signal LS sent from signal processing part 30, optionally to powered photosensitive
The circumferential surface irradiation laser LB of drum 211.Thus, form quiet in the circumferential surface of photosensitive drums 211
Electric latent image.
Fig. 3 A are the top views of exposure portion 23.Also, Fig. 3 B are the side views of exposure portion 23.
As shown in Figure 3A, exposure portion 23 possesses Laser Driven portion 232, polygon mirror 233, F θ lens
234th, F θ lens 235, mirror 236, beam sensor (BD sensors) 237.Moreover, such as
Shown in Fig. 3 B, exposure portion 23 possesses polygon mirror drive division 231.
Polygon mirror drive division 231 is the device for rotating polygon mirror 233.Polygon mirror
Drive division 231 possesses motor (hereinafter referred to as polygon mirror motor.).Reflected by multiaspect
The work of body motor, polygon mirror 233 is horizontally rotated as shown in Figure 3A.Multiaspect
Reflector drive division 231 can change the rotary speed of polygon mirror motor.Polygon mirror drives
The rotary speed that portion 231 makes polygon mirror 233 to be specified by control unit 40 rotates.
Laser Driven portion 232 is the drive circuit for driving semiconductor laser LD.Laser Driven portion 232
Drive semiconductor laser LD and laser is exported to polygon mirror 233.The structure of Laser Driven portion 232
As receiving laser control signal LS from signal processing part 30.Figure is included in laser control signal LS
As data-signal.Laser Driven portion 232 controls semiconductor laser LD's based on viewdata signal
Luminous timing.
In addition, Laser Driven portion 232 possesses the APC (Automatic for automatically controlling laser power
Power Control, automated power control) function.Except view data in laser control signal LS
APC timing signals are also included beyond signal.Laser Driven portion 232 is represented by APC timing signals
Timing perform APC.
Polygon mirror 233 is the laser exported from semiconductor laser LD is inclined to main scanning direction
Device.Main scanning direction refers to the direction vertical with the direction of the rotation of photosensitive drums 211.Multiaspect reflects
Body 233 is that multiple mirrors are arranged to polygon-shaped prism.In addition, in figure 3 a, multiaspect is anti-
The shape of beam 233 is in octagon, but the shape of polygon mirror 233 is not limited to octagon.
Polygon mirror 233 is rotated at a high speed by the driving of polygon mirror drive division 231.Pass through
The rotation of polygon mirror 233, the circumferential surface of photosensitive drums 211 is repeatedly by laser scanning.Photosensitive
The pixel that a minute surface is a line is formed on drum 211.
F θ lens 234 and F θ lens 235 be used in photosensitive drums 211 constant-speed scanning by multiaspect
The lens for the laser that reflector 233 reflects.The laser reflected by polygon mirror 233 is saturating by F θ
Mirror 234 and F θ lens 235 are irradiated to the circumferential surface of photosensitive drums 211.Irradiate the powered of part
It is eliminated, thus in the circumferential surface formation electrostatic latent image of photosensitive drums 211.
Mirror 236 is that every scanning a line reflects the laser light to once (that is, the multiaspect of beam sensor 237
Reflector 233 often rotates the amount of minute surface one at a time) mirror.Mirror 236 is configured positioned at laser
Scanning range in and be photosensitive drums 211 scanning range outside position.
Beam sensor 237 is the optical sensor that every scanning a line detects a laser.Present embodiment
In, beam sensor 237 is configured to the laser that detection is reflected by mirror 236.Beam sensor 237
Based on testing result generation beam detection (BD；Beam Detector) signal, and to shown in Fig. 1
Signal processing part 30 export.
Signal processing part 30 is the various signals that processing is inputted from image processing part 10 and Printing Department 20
Circuit.Fig. 4 A are the block diagrams of signal processing part 30.Signal processing part 30 possess oscillator 31,
Signal generation portion 32, signal generation portion 33, laser control signal output section 34, measurement portion 35.
Oscillator 31 is the circuit that clock signal clk is supplied to each portion of signal processing part 30.Shake
Device 31 is swung to be made up of such as crystal oscillator.
Signal generation portion 32 is that generation exports timing signal TS1 to laser control signal output section 34
Circuit.Signal generation portion 32 plays a role as the first signal generation portion.Signal generation portion 32 is by example
As PLL (Phase Locked Loop, phaselocked loop) circuit is constituted.Inputted to signal generation portion 32
There are signal beam detection and clock signal clk.It is timely that signal generation portion 32 is based on signal beam detection
Clock signal CLK generation timing signals TS1.
In timing signal TS1 (main scanning synchronizing signal is also referred to as comprising horizontal-drive signal.) and pixel
Clock signal.Horizontal-drive signal is the signal synchronous with the scanning of a line.In addition, pixel clock is believed
Number it is the signal synchronous with the scanning of a pixel.
Signal generation portion 32 is based on signal beam detection and generates horizontal-drive signal.For example, signal is given birth to
Fluctuation is reduced from signal beam detection by using PLL circuit into portion 32 and horizontal synchronization letter is generated
Number.In addition, signal generation portion 32, which is based on clock signal clk, generates pixel clock signal.For example,
When signal generation portion 32 changes the frequency next life pixel of clock signal clk by using PLL circuit
Clock signal.In addition, signal generation portion 32 can be by the frequency shift of pixel clock into desired frequency.
Signal generation portion 32 is by the frequency shift of pixel clock into the frequency specified by control unit 40.
Signal generation portion 33 is the timing signal TS2 that generation is exported to laser control signal output section 34
Circuit.Signal generation portion 32 plays a role as secondary signal generating unit.Signal generation portion 33 by
Such as PLL (Phase Locked Loop, phaselocked loop) circuit is constituted.It is defeated to signal generation portion 33
Enter to have signal beam detection and clock signal clk.Signal generation portion 33 be based on signal beam detection and
Clock signal clk generation timing signal TS2.
Horizontal-drive signal and pixel clock signal are included in timing signal TS2.Horizontal-drive signal and
The generation method of pixel clock signal is believed with timing signal TS1 horizontal-drive signal and pixel clock
Number generation method it is identical.In addition, signal generation portion 33 can be by signal beam detection directly as water
Flat synchronizing signal.In this case, signal beam detection can not also by signal generation portion 33, and
Directly inputted to laser control signal output section 34.
Laser control signal output section 34 is to the output laser control signal LS of Laser Driven portion 232
Circuit.There is timing signal TS1 and timing signal TS2 to the input of laser control signal output section 34.
In addition, being inputted to laser control signal output section 34 has the view data exported from image processing part 10
D.Laser control signal output section 34 is based on these input signals generation laser control signal LS.
Viewdata signal and APC timing signals are included in laser control signal LS.Picture number it is believed that
Number it is the signal for view data to be informed to Laser Driven portion 232.Say as an example, picture number it is believed that
Number it is the frequency pwm signal consistent with pixel clock.The a cycle of pwm signal is equivalent to one
Individual pixel.Laser control signal output section 34 changes in a cycle pwm signal according to pixel value
Connection during and disconnect during.
APC timing signals are the signals for APC execution timing to be informed to Laser Driven portion 232.
APC execution timing signal is such as timing pulse signal consistent with horizontal-drive signal.Laser control
Signal output portion 34 processed is based on horizontal-drive signal and generates APC timing signals.
In addition, used to generate laser control signal LS timing signal (pixel clock, with
And horizontal-drive signal) can be timing signal TS1 or timing signal TS2.Laser control
Control of the signal output portion 34 based on control unit 40 processed, will in order to generate laser control signal LS and
The timing signal used is converted into any one in timing signal TS1 and timing signal TS2.
Fig. 4 B are an examples of the composition of laser control signal output section 34.Laser control signal is defeated
Go out portion 34 and possess LS generative circuits 341, LS generative circuits 342, selector 343.LS generation electricity
Road 341 is the circuit that laser control signal LS is generated based on timing signal TS1.LS generative circuits
342 be the circuit that laser control signal LS is generated based on timing signal TS2.Selector 343 be by
The output of laser control signal output section 34 is converted into the output and LS generations of LS generative circuits 341
The circuit of any one in the output of circuit 342.Laser control signal output section 34 is by based on control
The control in portion 40 processed makes selector 343 work, by the output in Laser Driven portion 232 (laser control
Signal LS processed) it is converted into the output of LS generative circuits 341 and the output of LS generative circuits 342
Any one.
In addition, in the following description, by the signal generated based on timing signal TS1 (if
Fig. 4 B example, is the output of LS generative circuits 341) it is referred to as signal A, it will be believed based on timing
Number TS2 and the signal (being the output of LS generative circuits 342 if Fig. 4 B example) generated
Referred to as signal B.Laser control signal output section 34 be at least by Printing Department 20 on sheet material S shape
During image, the device that signal A is exported as laser control signal LS.
Fig. 4 A are returned to, measurement portion 35 is the circuit for the rotary speed for measuring polygon mirror.To signal
The input of generating unit 33 has signal beam detection and clock signal clk.Signal generation portion 33 is based on light beam
Signal and clock signal clk are detected, the laser detection interval of measuring beam sensor 237 is (that is, more
Face reflector 233 rotates the time of a minute surface).Measurement portion 35 regard measurement result as rotary speed
Information RS, the control unit 40 shown in Fig. 1 is exported.
In addition, clock signal clk is that the pulse spacing included in signal is detected for measuring beam
The signal at (laser detection interval).Therefore, the clock signal for being input to measurement portion 35 can not also
It must be the clock signal clk generated by oscillator 31.For example, being input to the clock of measurement portion 35
Signal can also be the pixel clock signal generated by signal generation portion 33.
Control unit 40 is the processing units such as processor.Control unit 40 is used as control image processing system 1
Control device function.Control unit 40 is stored in ROM (Read (not shown) by basis
Only Memory, read-only storage) or RAM (Random Access Memory, are deposited at random
Take device) program work, realization includes image multiplying power adjustment processing described later, at rotary speed change
Various work including reason and timing signal exception processes.As shown in figure 1, control unit 40 passes through
Worked according to said procedure, the function as judging part 41, output control part 42.For this
A little work, image multiplying power adjustment processing, rotary speed exception processes and the timing signal that will be described below
Described in the explanation of exception processes.
Next, the work to the image processing system 1 with this composition is illustrated.
If occurring the switching at surface and the back side, control unit 40 starts image multiplying power adjustment processing.Separately
Outside, laser control signal output section 34 start image multiplying power adjustment processing when, using signal A as
Laser control signal LS is exported.Signal A is the laser controlling letter generated based on timing signal TS1
Number.Hereinafter, the flow chart of reference picture 5, is illustrated to image multiplying power adjustment processing.
The instruction of output control part 42 laser control signal output section 34 is by the defeated of Laser Driven portion 232
Come from signal A and switch to signal B (ACT101).As described above, signal A is believed based on timing
Number TS1 and the signal generated, signal B is the signal generated based on timing signal TS2.Laser
If control signal output section 34 receives instruction from output control part 42, output is switched from signal A
To signal B.
After the completion of switching, control unit 40 starts timing signal exception processes and rotary speed exception processes.
Control unit 40 is timed signal exception processes and rotary speed exception processes (ACT102) simultaneously.
Hereinafter, timing signal exception processes and rotary speed exception processes are illustrated.First to timing
Signal exception processes are illustrated.Timing signal exception processes are to be used to be given birth to by signal generation portion 32
Into timing signal TS1 be changed to meet the timing of the image multiplying power after adjustment.Fig. 6 is timing signal
The flow chart of exception processes.
The command signal generating unit 32 of output control part 42 stops timing signal TS1 output
(ACT201).If signal generation portion 32 receives instruction from output control part 42, stop timing and believe
Number TS1 output.The timing signal TS1 that signal generation portion 32 stops can be pixel clock letter
Number.
In addition, the output of laser control signal output section 34 switches to signal B from signal A.Letter
Number B is based on timing signal TS2 and generated.Therefore, even if signal generation portion 32 stopped timing and believe
Number TS1 output, laser control signal output section 34 also can continue to laser control signal LS's
Output.As a result, Laser Driven portion 232 is during timing signal exception processes, it can also continue half
Conductor laser LD driving.
Next, output control part 42 sets the frequency of pixel clock signal to signal generation portion 32
(ACT202).In addition, using horizontal-drive signal as eliminating fluctuation from signal beam detection
Signal when, the frequency of horizontal-drive signal becomes automatically together with the change of the frequency of signal beam detection
Change.Therefore, output control part 42 can not change the setting related to horizontal-drive signal, keep
As former state.
After the completion of setting, the command signal generating unit 32 of output control part 42 restarts timing signal
TS1 output (ACT203).If signal generation portion 32 is received from output control part 42 and instructed,
Restart the generation of pixel clock signal.The frequency of pixel clock signal is set as in ACT203
Fixed frequency.Then, signal generation portion 32 believes the pixel clock signal generated and horizontal synchronization
Number exported as timing signal TS1 to laser control signal output section 34.
Next, it is judged that portion 41 is timed the signal TS1 stable wait of output.Specifically,
Judging part 41 judge since command signal generating unit 32 again timing signal TS1 output, if
By time set in advance (ACT204).(ACT204 when without setting time：It is no),
Judging part 41 repeats ACT204, untill by setting time.
If by setting time (ACT204：It is), then judging part 41 is adjusted to image multiplying power is performed
The notifications stop timing signal exception processes (ACT205) of processing.After notice is finished, control unit
40 with regard to stop timing signal exception processes.
Next, being illustrated to rotary speed exception processes.Rotary speed exception processes are to be used to incite somebody to action
The rotary speed of polygon mirror 233 is changed to meet the place of the rotary speed of the image multiplying power after adjustment
Reason.Fig. 7 is the flow chart of rotary speed exception processes.
The instruction polygon mirror of output control part 42 drive division 231 changes the rotation of polygon mirror 233
Rotary speed (ACT301).If polygon mirror drive division 231 is received from output control part 42 and instructed,
Then start the change of the rotary speed of polygon mirror 233.
Next, it is judged that portion 41 obtains rotating speed data RS (ACT302) from measurement portion 35.
As described above, rotating speed data RS is the laser detection interval of beam sensor 237.
Next, it is judged that portion 41 is based on the rotating speed data RS obtained in ACT302, judge many
Whether the rotary speed of face reflector 233 stablizes (ACT303).For example, judging part 41 judges
Whether the rotary speed of the polygon mirror 233 shown in rotating speed data RS is set in advance
Time, it is continued in velocity interval set in advance.(the ACT303 when rotary speed is unstable：
It is no), judging part 41 repeats ACT302 and ACT303, untill rotary speed is stable.
(ACT303 after rotary speed is stable：It is), 41 pairs of judging part is performed at image multiplying power adjustment
The notifications of reason terminate rotary speed exception processes (ACT304).After notice is finished, control unit 40
Terminate rotary speed exception processes.
The flow of Fig. 5 image multiplying power adjustment processing is returned to, judging part 41 judges that timing signal is changed
Whether processing and rotary speed exception processes all terminate (ACT103).At the end of processing not
(ACT103：It is no), judging part 41 repeats ACT103, untill processing all terminates.
(ACT103 at the end of processing：It is), the instruction laser control signal output of output control part 42
Portion 34 will switch to signal A (ACT104) to the output in Laser Driven portion 232 from signal B.Swash
If optical control signal output section 34 receives from output control part 42 and instructed, output is cut from signal B
Shift to signal A.Thus, exported from semiconductor laser LD and meet swashing for the image multiplying power after adjustment
Light.
After the completion of switching, control unit 40 terminates image multiplying power adjustment processing.Control unit 40 is terminating to scheme
After multiplying power adjustment processing, Printing Department 20 is controlled, image is formed on sheet material S.
According to present embodiment, because image processing system 1 possesses signal generation portion 33, therefore, figure
As the adjustment of multiplying power is without for a long time.Assuming that signal processing part 30 does not have signal generation portion 33.
In this case, laser control signal output section 34 changes the frequency of pixel clock in signal generation portion 32
During rate, from Anywhere can not all receive timing signal, therefore, it is impossible to export laser control signal
LS.If laser control signal LS can not be exported, Laser Driven portion 232 cannot drive and partly lead
Body laser LD.Consequently, it is possible to laser cannot be exported from semiconductor laser LD, therefore light
Beam sensor 237 cannot detect laser.As a result, signal beam detection can not be output to measurement portion
35.Because measurement portion 35 measures the rotary speed of polygon mirror 233 based on signal beam detection,
Therefore, measurement portion 35 can not export rotating speed data RS to control unit 40.Due to control unit 40
The rotary speed of polygon mirror 233 can not be learnt, it is thus impossible to carry out rotary speed exception processes.
As a result, before the change of the frequency of the completion of laser control signal output section 34 pixel clock, control
Portion 40 processed must not be not to wait for the execution of rotary speed exception processes.Consequently, it is possible to image processing system 1
Need to take a long time in the adjustment of image multiplying power.
But, the image processing system 1 of present embodiment is given birth to except generating timing signal TS1 signal
Into beyond portion 32, it is also equipped with generating timing signal TS2 signal generation portion 33.Moreover, laser control
Signal output portion 34 processed is during signal generation portion 32 stops timing signal TS1 supply, based on fixed
When signal TS2 continue laser control signal LS output.Therefore, image processing system 1 is in pixel
Also the change of the rotary speed of polygon mirror 233 can be performed during the frequency change of clock, therefore,
It need not be taken a long time in the adjustment of image multiplying power.
(embodiment two)
In embodiment one, Printing Department 20 is the printing equipment of direct transfer modes, but Printing Department
20 can also be the printing equipment of intermediate transfer mode.Hereinafter, to possessing the printing of four company's series systems
The image processing system 1 in portion 20 is illustrated.
Image processing system 1 possesses image processing part 10, Printing Department 20, signal processing part 30, control
Portion 40 processed.The composition and embodiment one of image processing part 10 and control unit 40 is identical, therefore omits
Its description.
Printing Department 20 is combination yellow (Y), pinkish red (M), cyan (C), four kinds of black (K)
The toner of color and on sheet material reproducing color therewith 4 connect series systems printing equipment.Fig. 8 is print
One example of the composition of brush portion 20.Printing Department 20 possess image formation station 21y, 21m, 21c,
21k, fixing section 22, exposure portion 23, intermediate transfer belt 241, transfer belt roller 242a, 242b and
Secondary transfer roller 243.
Intermediate transfer belt 241 is to form various face by image formation station 21y, 21m, 21c, 21k
The intermediate transfer medium of the toner image of color.
Transfer belt roller 242a, 242b is the roller for rotating intermediate transfer belt 241.
Secondary transfer roller 243 is that the toner image on the surface of intermediate transfer belt 241 is transferred into piece
Bias roller on material S.
Fig. 9 A are the top views of exposure portion 23.In addition, Fig. 9 B are the side views of exposure portion 23.
As shown in Figure 9 A, exposure portion 23 possesses Laser Driven portion 232, polygon mirror 233, F θ lens
234th, F θ lens 235, mirror 236, beam sensor 237 and mirror 238.In addition, such as Fig. 9 B
Shown, exposure portion 23 possesses polygon mirror drive division 231 and mirror 239.
The exposure portion 23 of embodiment two be configured with four semiconductor laser LDy, LDm, LDc,
LDk.Semiconductor laser LDy, LDm, LDc, LDk correspond respectively to image formation station 21y,
21m、21c、21k.Semiconductor laser LDy, LDm, LDc, LDk export respectively laser LBy,
LBm、LBc、LBk.To Laser Driven portion 232 input have laser control signal LSy, LSm,
LSc、LSk.Laser control signal LSy, LSm, LSc, LSk are namely for control semiconductor
Laser LDy, LDm, LDc, LDk signal.
Mirror 238 is to multiaspect for the laser for exporting semiconductor laser LDm, LDc, LDk
The mirror that reflector 233 reflects.Mirror 238 is made up of multiple mirrors.Multiple mirrors are arranged respectively at
Position corresponding with semiconductor laser LDm, LDc, LDk.
Mirror 239 is to will transmit through the mirror that the laser of F θ lens 234,235 reflects to photosensitive drums 211.
Mirror 239 is made up of multiple mirrors.Multiple mirrors be arranged respectively at semiconductor laser LDm,
The corresponding position of LDc, LDk.
The other compositions and embodiment one of Printing Department 20 are identical.
Figure 10 is the block diagram of signal processing part 30.Signal processing part 30 possesses oscillator 31, signal
Generating unit 32y, 32m, 32c, 32k, signal generation portion 33, laser control signal output section 34y,
34m, 34c, 34k and measurement portion 35.
Signal generation portion 32y, 32m, 32c, 32k are yellow (Y), pinkish red (M), green grass or young crops respectively
Color (C), the corresponding signal generation portion of black (K).Signal generation portion 32y, 32m, 32c, 32k
Respectively as the first signal generation portion function.
From signal generation portion 32y, 32m, 32c, 32k export respectively timing signal TSy, TSm,
TSc、TSk.It is same with the timing signal TS of embodiment one, timing signal TSy, TSm, TSc,
Pixel clock signal and horizontal-drive signal are included in TSk.Timing signal TSy, TSm, TSc,
TSk is respectively as the first timing signal function.
Laser control signal output section 34y, 34m, 34c, 34k are respectively and yellow (Y), magenta
(M), cyan (C), the corresponding laser control signal output section of black (K).
To laser control signal output section 34y, 34m, 34c, 34k difference input image data Dy,
Dm、Dc、Dk.View data Dy, Dm, Dc, Dk be respectively with yellow (Y), pinkish red (M),
Cyan (C), the corresponding view data of black (K).These view data are from image processing part 10
Output.
From laser control signal output section, 34y, 34m, 34c, 34k export laser control signal respectively
LSy、LSm、LSc、LSk.Laser control signal LSy, LSm, LSc, LSk are respectively and Huang
Color (Y), pinkish red (M), cyan (C), the corresponding laser control signal of black (K).These
Laser control signal is output to Laser Driven portion 232.
The other compositions and embodiment one of signal processing part 30 are identical.
Next, the work to the image processing system 1 with this composition is illustrated.
If occurring the switching at surface and the back side, control unit 40 starts image multiplying power adjustment processing.Separately
Outside, laser control signal output section 34y, 34m, 34c, 34k are starting image multiplying power adjustment processing
When, signal A is exported as laser control signal.Hereinafter, the flow chart of reference picture 11, to figure
As multiplying power adjustment processing is illustrated.
The instruction of output control part 42 laser control signal output section 34y, 34m, 34c, 34k will be to swashing
The output in optical drive portion 232 switches to signal B (ACT401) from signal A.Laser control signal is defeated
Instruct, will export from signal if going out portion 34y, 34m, 34c, 34k and being received from output control part 42
A switches to signal B.
After the completion of switching, control unit 40 starts timing signal exception processes and rotary speed exception processes.
Control unit 40 is timed signal exception processes and rotary speed exception processes (ACT402) simultaneously.
Further, since rotary speed exception processes and embodiment one are identical, therefore, omit to its
Explanation.Hereinafter, timing signal exception processes are illustrated.Figure 12 is timing signal exception processes
Flow chart.
Output control part 42 command signal generating unit 32y, 32m, 32c, 32k stop timing signal
TSy, TSm, TSc, TSk output (ACT501).If signal generation portion 32 is from output control
Portion 42 receives order, then stops timing signal TSy, TSm, TSc, TSk output.
Next, output control part 42 sets pixel to signal generation portion 32y, 32m, 32c, 32k
The frequency (ACT502) of clock signal.
After setting terminates, output control part 42 command signal generating unit 32y, 32m, 32c, 32k
Start timing signal TSy, TSm, TSc, TSk output (ACT503) again.Signal generation portion
If 32y, 32m, 32c, 32k receive instruction from output control part 42, then start timing signal
TSy, TSm, TSc, TSk output.
Next, it is judged that portion 41 is judged since the output of timing signal instruction again, if pass through
Setting time (ACT504).If without setting time (ACT504：It is no), then judging part 41
ACT504 is repeated, untill by setting time.
If by setting time (ACT504：It is), then 41 pairs of judging part performs the adjustment of image multiplying power
The notifications stop timing signal exception processes (ACT505) of processing.After the completion of notice, control unit
40 stop timing signal exception processes.
The flow of Figure 11 image multiplying power adjustment processing is returned to, judging part 41 judges that timing signal is changed
Whether processing and rotary speed exception processes all terminate (ACT403).At the end of processing not
(ACT403：It is no), judging part 41 repeats ACT403, untill processing all terminates.
(the ACT403 at the end of processing：It is), the instruction laser control signal of output control part 42 is defeated
Letter will be switched to the output in Laser Driven portion 232 from signal B by going out portion 34y, 34m, 34c, 34k
Number A (ACT404).If laser control signal output section 34y, 34m, 34c, 34k is controlled from output
Portion 42 processed receives instruction, then output is switched into signal A from signal B.
After the completion of switching, control unit 40 terminates image multiplying power adjustment processing.
According to present embodiment, even if Printing Department 20 is intermediate transfer mode, it can also obtain and real
Apply the same effect of mode one.
In addition, above-mentioned embodiment is an example, can there are numerous variations and application.
For example, embodiment one, two is to regard Printing Department 20 as direct transfer modes and series system
What the printing equipment of (intermediate transfer mode) was illustrated, but Printing Department 20 is not limited to direct transfer
Mode and series system (intermediate transfer mode).
In addition, embodiment one, two be the rotating speed data RS that will be obtained by measurement portion 35 as
What the laser detection interval of beam sensor 237 was illustrated, but rotating speed data RS is not limited to
Laser detection interval.For example, the multiaspect that measurement portion 35 will can also be calculated by laser detection interval
The rotation number of the time per unit of reflector 233 is used as rotating speed data RS.
In addition, image processing system 1 can also have deceleration mode.Deceleration mode is by every one
The minute surface of individual use polygon mirror, and cause the rotary speed of photosensitive drums 211 to be 1/2, make printing
The pattern of speed reduction.When deceleration mode is used to print ground paper, wish the work of image processing system 1
Make noise it is Jing Yin when.
Under deceleration mode, the first signal generation portion (signal generation portion 32,32y, 32m, 32c, 32k)
By the way that the pulse of signal beam detection is rejected at interval of one, horizontal-drive signal is generated.The
One signal generation portion believes 2 doubling times at laser detection interval as horizontal synchronization under deceleration mode
Number cycle.Secondary signal generating unit (signal generation portion 33) can also be by the week at laser detection interval
Cycle of the phase directly as horizontal-drive signal.
Even if image processing system 1 works under deceleration mode, secondary signal generating unit (signal generation
Portion 33) and the work of measurement portion 35 do not change, thus also can with embodiment one and embodiment party
Work identical work shown in formula two carries out the adjustment of image multiplying power.
Special computer can be passed through by controlling the control device of the image processing system 1 of present embodiment
System is realized, can also be realized by conventional computer system.Control device can be built in figure
As forming apparatus 100 computer (processor) or be externally controlled image processing system
100 computer.Alternatively, it is also possible to which said procedure to be stored in the service possessed on the networks such as network
In the hard disk unit of device device so that computer etc. can be downloaded to.
Although the description of embodiments of the present invention, but these embodiments are intended only as example and disclosed
, it is not intended that limit the scope of invention.These new embodiments can be carried out in other various modes
Implement, various omissions can be carried out without departing from the spirit and scope of the invention, replaces, change.
These embodiments and its deformation be included in the scope and spirit of the present invention, and be included in right will
Ask in invention and its equivalent scope described in book.
Claims (10)
1. a kind of image processing system, including：
First signal generation portion, generates the first timing signal；
Secondary signal generating unit, generates second timing signal；
Laser control signal output section, what output was generated based on first timing signal swashs
Optical control signal；
Laser Driven portion, laser is exported based on the laser control signal to polygon mirror；
Beam sensor, detects the laser reflected by the polygon mirror；
Measurement portion, based on the timing that the laser is detected by the beam sensor, is obtained
Represent the rotating speed data of the rotary speed of the polygon mirror；And
Output control part, makes first signal generation portion change first timing signal
Frequency,
During first signal generation portion changes the frequency of first timing signal,
The laser control signal output section is to Laser Driven portion output based on the described second timing
Signal and the laser control signal generated.
2. image processing system according to claim 1, wherein,
Horizontal-drive signal is included in first timing signal,
Whenever a minute surface of the laser by the polygon mirror, the light beam is passed
Sensor detects the once laser, is exported testing result as signal beam detection,
First signal generation portion is based on the signal beam detection and generates the horizontal synchronization
Signal.
3. image processing system according to claim 2, wherein,
The first pixel is also included in first timing signal in addition to the horizontal-drive signal
Clock,
The second pixel clock is included in the second timing signal,
The laser control signal output section is based on first pixel clock and the level is same
Laser control signal described in signal output is walked, and changes described in first signal generation portion
During the frequency of first timing signal, examined based on second pixel clock and the light beam
Survey laser control signal described in signal output.
4. image processing system according to claim 2, wherein,
Described image forming apparatus possesses subtracting that the minute surface of polygon mirror is used every one
Fast mode,
Under the deceleration mode, first signal generation portion will pass through the beam detection
2 doubling times of the assay intervals for the laser that signal judges are used as the horizontal-drive signal
Cycle.
5. image processing system according to claim 1, wherein,
The rotating speed data is the laser detection interval of the beam sensor.
6. a kind of control device, including：
First signal generation portion, generates the first timing signal；
Secondary signal generating unit, generates second timing signal；
Laser control signal output section, the laser that will be generated based on first timing signal
Control signal is exported to Laser Driven portion, and the Laser Driven portion exports laser to polygon mirror；
Measurement portion, based on the timing that the laser is detected by beam sensor, measurement is described
The rotary speed of polygon mirror, beam sensor detection is reflected by the polygon mirror
The laser；And
Output control part, makes first signal generation portion change first timing signal
Frequency,
During first signal generation portion changes the frequency of first timing signal,
The laser control signal output section is to Laser Driven portion output based on the described second timing
Signal and the laser control signal generated.
7. control device according to claim 6, wherein,
Horizontal-drive signal is included in first timing signal,
Whenever a minute surface of the laser by the polygon mirror, the light beam is passed
Sensor detects the once laser, is exported testing result as signal beam detection,
First signal generation portion is based on the signal beam detection and generates the horizontal synchronization
Signal.
8. control device according to claim 7, wherein,
The first pixel is also included in first timing signal in addition to the horizontal-drive signal
Clock,
The second pixel clock is included in the second timing signal,
The laser control signal output section is based on first pixel clock and the level is same
Laser control signal described in signal output is walked, and changes described in first signal generation portion
During the frequency of first timing signal, examined based on second pixel clock and the light beam
Survey laser control signal described in signal output.
9. control device according to claim 7, wherein,
The control device possesses the minute surface of polygon mirror every the deceleration used a mould
Formula,
Under the deceleration mode, first signal generation portion will pass through the beam detection
2 doubling times of the assay intervals for the laser that signal judges are used as the horizontal-drive signal
Cycle.
10. control device according to claim 6, wherein,
The rotating speed data is the laser detection interval of the beam sensor.
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| CN201610024174.0A CN106970510A (en) | 2016-01-14 | 2016-01-14 | Image processing system and control device |
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| CN201610024174.0A CN106970510A (en) | 2016-01-14 | 2016-01-14 | Image processing system and control device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114740218A (en) * | 2022-04-19 | 2022-07-12 | 江苏亮点光电科技有限公司 | Method for measuring speed by laser |
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| CN1936721A (en) * | 2005-09-21 | 2007-03-28 | 柯尼卡美能达商用科技株式会社 | Image forming apparatus |
| CN100584629C (en) * | 2004-03-22 | 2010-01-27 | 株式会社东芝 | Light beam scanning apparatus and image forming apparatus |
| CN103823346A (en) * | 2012-11-16 | 2014-05-28 | 三星电子株式会社 | Image forming apparatus and method of forming image thereof |
| JP2014189005A (en) * | 2013-03-28 | 2014-10-06 | Kyocera Document Solutions Inc | Image formation device |
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| CN100584629C (en) * | 2004-03-22 | 2010-01-27 | 株式会社东芝 | Light beam scanning apparatus and image forming apparatus |
| CN1936721A (en) * | 2005-09-21 | 2007-03-28 | 柯尼卡美能达商用科技株式会社 | Image forming apparatus |
| CN103823346A (en) * | 2012-11-16 | 2014-05-28 | 三星电子株式会社 | Image forming apparatus and method of forming image thereof |
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Application publication date: 20170721 |