CN101316313B - Image reading device, image forming apparatus, and reading-unit install method - Google Patents
Image reading device, image forming apparatus, and reading-unit install method Download PDFInfo
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- CN101316313B CN101316313B CN2008101085800A CN200810108580A CN101316313B CN 101316313 B CN101316313 B CN 101316313B CN 2008101085800 A CN2008101085800 A CN 2008101085800A CN 200810108580 A CN200810108580 A CN 200810108580A CN 101316313 B CN101316313 B CN 101316313B
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Abstract
An adjusting unit adjusts an output level of digital data converted from image data, based on a correction coefficient for each color. A color correction unit performs a color-correction process of correcting a fluctuation of adjusted output level based on a color-correction parameter that differs from one image reading device to another. The correction coefficient is generated before a reading unit is installed in the image reading device such that the output level becomes a predetermined value when reading the original document without the color-correction process, and then adjusted without the color-correction process at a time of installing the reading unit.
Description
The cross reference of related application
The priority of the japanese priority document 2008-081661 that the japanese priority document 2007-145467 that the application requires to submit in Japan on May 31st, 2007 and on March 26th, 2008 submit in Japan, and by reference its full content is herein incorporated.
Technical field
The image-reading device of the view data that the present invention relates to read original copy and generate this original copy, the method that comprises the imaging device of this image-reading device and reading unit is installed in this image-reading device.
Background technology
Fig. 1 is the sketch map of typical image fetch equipment.This image-reading device reads in the image of the original copy 101 that passes through between benchmark blank (reference whiteboard) 102 and the reading unit 103.The output level of reading unit 103 depends on various factors, such as the variation of spectral characteristic in each parts in distance between concentration (density), reading unit 103 and the benchmark blank 102 of benchmark blank 102 and the reading unit 103.
When reading unit 103 read colored original, red, green and blue (RGB) value can receive first factor and second factor affecting equably.As a result, can obtain to have same hue but the image of different brightness.In addition, even when reading unit 103 reads same coloured image, because the influence of the 3rd factor can obtain the rgb value of different ratios.As a result, can obtain to have the image of the different brightness of different color harmonies.
If being set separately, redness, green and blue coefficient make and when reading the benchmark original copy, can obtain the target rgb value that then first factor and second factor can not influence output level.If based on by carrying out colour correction through the color correction parameter that reads the rgb value definition that a plurality of colored originals obtain, then the 3rd factor can not influence output level.
The technology of known relevant disclosed colour correction in following japanese patent application is open for example discloses 2004-104239 number, japanese patent application in japanese patent application and discloses 2000-059637 number, japanese patent application and disclose in 2000-216997 number disclosed.Japanese patent application discloses 2004-104239 number and discloses a kind of image-reading device; It can be optimized and reads level, makes unusable paper pass through reading level (output level of output image data) and using the difference that reads between the level of platen (platen) can be less of document feed device (sheet-through document feeder SDF).Image-reading device comprises optical-electrical converter, reads optical unit, analogy signal processing unit and modulus (AD) transducer.This optical-electrical converter will convert analog electrical signal into from the view data that original copy obtains with optical mode.This optical unit is launched light to original copy, and will be by the photoconduction of original copy reflection to optical-electrical converter.The analog signal sampling of this analogy signal processing unit to generating by this optical-electrical converter, and carry out the gain adjustment.This AD converter will be a digital signal by the analog signal conversion that this analogy signal processing unit is handled.This image-reading device has first read mode and second read mode.In this first read mode, when this read optical unit and below the original copy that does not move, moves, this read optical unit and reads this original copy.In this second read mode, when reading of not moving of original copy moved above the optical unit, this read optical unit and reads original copy.This image-reading device comprises correcting unit, and it proofreaies and correct output level, makes the output level that in this first read mode or in this second read mode, can optimize the view data of original copy.
Japanese patent application disclose disclose for 2000-059637 number a kind of through proofreading and correct since in the scanner that light source and colour filter or the like cause the variation of spectral sensitivity and the read error that causes owing to the variation of spectral sensitivity obtain the method for constant color rendering.In order to obtain constant color rendering; Based on the characteristic value through utilizing measured value that scheduled measurement unit measuring basis original copy obtains or benchmark original copy and through analyzing, suppose the spectral sensitivity characteristic of image-reading device by utilizing image-reading device to read the statistical value that image signal value that the benchmark original copy obtains calculates.Based on spectral sensitivity characteristic definition color correction parameter.Use color correction parameter to proofread and correct the picture signal that obtains by image-reading device.
Japanese patent application discloses 2000-216997 number and discloses a kind of image reading method; If wherein under the different situation that reads, obtain polytype picture signal; Then can proofread and correct so that the signal level of picture signal is mated each other through carrying out based on the predetermined difference that reads in the luminous intensity; Make not cause because the error that the characteristic of document reading unit causes, but subdue because the picture signal (image color (density) data) that the different situation that reads causes poor.In image reading method, having under some types the situation that reads of different light intensity degree, read original image, thereby obtain some types picture signal with photovoltaic.Obtain the picture characteristics value from each picture signal.Difference through using picture characteristics value eliminating tolerancing signal level is mated the signal level of each picture signal each other.
In typical read taking equipment shown in Figure 1, if carried out required correction, then output level can not receive the influence of first to the 3rd factor.
Yet, be installed in the typical image fetch equipment if after the color correction parameter of color correction circuit is set, will comprise the reading unit of color correction circuit, can not carry out suitable colour correction.This is because different with the distance between reading unit and the benchmark blank in the concentration of the concentration of benchmark blank under the state of installing and the reading unit benchmark blank when distance between the benchmark blank maybe and be provided with color correction parameter, thereby possibly change at the output level of color correction circuit input side.
In addition, disclosing 2004-104239 number, japanese patent application in japanese patent application discloses 2000-059637 number, japanese patent application and discloses the output level that disclosed conventional art in 2000-216997 number can not be proofreaied and correct the color correction circuit input side.
Summary of the invention
A target of the present invention is that part solves the said problem in the conventional art at least.
According to an aspect of the present invention, a kind of reading unit that comprises the view data that reads original copy and export this original copy and handling from the image-reading device of the graphics processing unit of the view data of this reading unit output is provided.This reading unit comprises: optical unit, and it utilizes this original copy of rayed, and receives reverberation from this original copy; Converting unit, it will convert numerical data into from the view data that reverberation obtains; Adjustment unit, its correction coefficient based on every kind of color is adjusted the output level of numerical data; And color correction unit, it is handled based on the colour correction of carrying out the fluctuation of proofreading and correct adjusted output level according to each image-reading device and different color correction parameters.Before reading unit being installed in the image-reading device, generate correction coefficient; Make do not carry out under the situation that colour correction handles, output level becomes predetermined value when reading unit reads original copy; When being installed in reading unit in the image-reading device, under the situation of not carrying out the colour correction processing, adjust this correction coefficient then; Make: this reading unit read be used for this reading unit being installed in this image-reading device before when generating the identical original copy of the original copy of this correction coefficient, this output level becomes this value of being scheduled to.
In addition, according to a further aspect in the invention, a kind of imaging device is provided, has comprised: reading unit, the view data that it reads original copy and exports this original copy; And graphics processing unit, it is handled from the view data of this reading unit output.This reading unit comprises: optical unit, and it utilizes this original copy of rayed, and receives reverberation from this original copy; Converting unit, it will convert numerical data into from the view data that reverberation obtains; Adjustment unit, its correction coefficient based on every kind of color is adjusted the output level of numerical data; And color correction unit, it is handled based on the colour correction of carrying out the fluctuation of proofreading and correct adjusted output level according to each imaging device and different color correction parameters.Before reading unit being installed in the imaging device, generate correction coefficient; Make do not carry out under the situation that colour correction handles, output level becomes predetermined value when reading unit reads original copy; When being installed in reading unit in the imaging device, under the situation of not carrying out the colour correction processing, adjust this correction coefficient then; Make: this reading unit read be used for this reading unit being installed in this imaging device before when generating the identical original copy of the original copy of this correction coefficient, this output level becomes this value of being scheduled to.
In addition; According to a further aspect in the invention; A kind of method that reading unit is installed is provided, and this reading unit utilizes the rayed original copy and receives reverberation from this original copy, will convert numerical data into from the view data that reverberation obtains; Adjust the output level of numerical data based on the correction coefficient of every kind of color, and based on according to each image-reading device and different color correction parameters is carried out the colour correction of the fluctuation of proofreading and correct adjusted output level and handled.This method comprises: generate for the first time, be included in and generate correction coefficient before being installed in reading unit in the image-reading device, make do not carry out under the situation that colour correction handles, output level becomes predetermined value when reading unit reads original copy; Generate for the second time, be included as each image-reading device and generate color correction parameter; Reading unit is installed in the image-reading device; And when being installed in reading unit in the image-reading device, under the situation of not carrying out the colour correction processing, adjust this correction coefficient, make that this output level becomes this predetermined value when reading the original copy identical with the original copy that when this generates for the first time, uses.
When combining accompanying drawing to consider,, will be better understood above-mentioned and other target, characteristic, advantage and technology and industrial significance of the present invention through reading following detailed description of the currently preferred embodiments of the present invention.
Description of drawings
Fig. 1 is the sketch map of typical image fetch equipment;
Fig. 2 is the block diagram according to the reading unit of the first embodiment of the present invention;
Fig. 3 is the block diagram of signal processing unit shown in Figure 2;
Fig. 4 is the block diagram of example that comprises the image-reading device of reading unit shown in Figure 2;
Fig. 5 is the block diagram of reading unit according to a second embodiment of the present invention;
Fig. 6 is the block diagram of the image-reading device of a third embodiment in accordance with the invention;
Fig. 7 is the sequential chart of main scanning line synchronizing signal and the relation between the average door (averagegate) of explanation view data, LSYNC;
Fig. 8 is the flow chart of handling according to the correction coefficient adjustment of the 3rd embodiment;
Fig. 9 is the mechanical schematic of optical unit shown in Figure 2; And
Figure 10 is the mechanical schematic of another example of optical unit.
Embodiment
Describe example embodiment of the present invention with reference to the accompanying drawings in detail.
Be similar to the concept structure of typical figure shown in Figure 15 picture fetch equipments according to the general structure of the image-reading device 301 of the first embodiment of the present invention.That is to say that reading unit 103 reads in the image of the original copy 101 that passes through between benchmark blank 102 and the reading unit 103.
Fig. 2 is the block diagram of reading unit 103.Reading unit 103 comprises optical unit 201, signal processing unit 202, shading correction circuit (shading-correction circuit) 203, grey balance adjustment circuit 204 and color correction circuit 205.
Fig. 3 is the block diagram of signal processing unit 202.Signal processing unit 202 comprises clamp circuit 601, sampling/maintenance (S/H) circuit 602, programmable gain amplifier 603 and modulus (AD) transducer 604.When signal processing unit 202 receives analog picture signal, the analog picture signal that AC is coupled is clamped to the internal reference electromotive force through clamp circuit 601.Utilization is sampled as the sampling pulse of the signal processing unit drive signal analog picture signal after to clamp, and the level that is kept through the analog picture signal of over-sampling by S/H circuit 602.Thus, obtain (sequential) analog picture signal of result.Programmable gain amplifier 603 utilizes predetermined gain to amplify this result's analog picture signal.Analog picture signal after AD converter 604 will amplify converts numerical data into.
For the inhomogeneous of inhomogeneous, the lens light transmittance of the sensitivity between each pixel of photo-electric conversion element and because the inhomogeneous and loss that illumination (lightning) system or optical system cause, correcting digital data in shading correction circuit 203.More specifically, through before reading original copy 101, shining benchmark blank 102 and reading white level (white-level) reference data that obtains to be used for proofreading and correct (hereinafter being called " shading data ") by the light of benchmark blank 102 reflections based on the shading of pixel.The following dateout D that calculates
Out:
D
out＝D
in/D
sh×(2
n-1) (1)
D wherein
InBefore proofreading and correct, through reading the view data that initial data obtains, D through shading
ShBe the shading data, n be bit number (for example, n=10).
Grey balance adjustment circuit 204 uses red, green and blue three correction coefficient to adjust the value (that is output level) of dateout.Three correction coefficient of definition make the output level that is used to read the benchmark original copy (being hereinafter referred to as " benchmark original copy ") that is used to adjust can be desired value separately.In order to obtain the shading data, the color correction functions of color correction circuit 205 is set to OFF and handles to skip colour correction.
For example, can calculate the dateout of using correction coefficient as follows:
D
out(R)＝D
in/D
sh×(2
n-1)×(2
n+Rref)/2
n (2)
D
out(G)＝D
in/D
sh×(2
n-1)×(2
n+Gref)/2
n (3)
D
out(B)＝D
in/D
sh×(2
n-1)×(2
n+Bref)/2
n (4)
Wherein Rref is red correction coefficient, and Gref is green correction coefficient, and Bref is blue correction coefficient.
In grey balance adjustment circuit 204 calculation equation (2) to (4) with the lower part:
×(2
n+Rref)/2
n
×(2
n+Gref)/2
n
×(2
n+Bref)/2
n
Through following equality (5) to (7) calculation correction coefficient (Rref, Gref and Bref), making can be with D
Out(R), D
Out(G) and D
Out(B) dateout is set to desired value.
Rref=2
n* D
Out(R) desired value/D
Out(R) currency-2
n(5)
Gref=2
n* D
Out(G) desired value/D
Out(G) currency-2
n(6)
Bref=2
n* D
Out(B) desired value/D
Out(B) currency-2
n(7)
For example, (shipment) is preceding dispatching from the factory, and promptly before the color correction functions of color correction circuit 205 is set under the state of OFF reading unit 103 is installed in image-reading device 301, carries out the calculating of using equality (5) to the correction coefficient of (7).After this, when reading unit 103 is installed in the image-reading device 301, be set in the color correction functions of color correction circuit 205 recomputate correction coefficient under the state of OFF.Thus, the correction coefficient before merging is adjusted into new correction coefficient.
Fig. 4 is the block diagram of example that comprises the image-reading device 301 of reading unit 103.Image-reading device 301 comprises: reading unit 103, the output unit 303 of handling the graphics processing unit 302 of the image that obtains through scanning and carrying out output image data classification or voltage level conversion.View data is sent to printer 304 from image-reading device 301, and prints to print image by printer 304.Image-reading device 301 and the printer 304 whole imaging devices that form, that is, and photocopier.
Provide the explanation of handling about the adjustment of under following situation, carrying out below: make reading unit 103 and image-reading device 301 in the different location respectively, and when making reading unit 103, be provided with the color correction parameter of color correction circuit 205.
Distance between the concentration of the benchmark blank 102 when color correction parameter is set and reading unit 103 and the benchmark blank 102 is different with the concentration and the distance between reading unit 103 and the benchmark blank 102 of benchmark blank 102 after reading unit 103 being installed in the image-reading device 301.Distance difference influences the output data value (output level) of color correction circuit 205 input sides.In order to proofread and correct output level; After being installed in reading unit 103 in the image-reading device 301; To adjust in the circuit 204 the correction coefficient Rref, Gref and the Bref that use in grey balance and be updated to the value that is recomputated to (7) by equality (5), the output level that make color correction functions in color correction circuit 205 be set under the state of OFF, to be used to read the benchmark original copy can be desired value.Preferred use same benchmark original copy to calculate before merging reading unit 103 and both correction coefficient afterwards.
Thus, the image-reading device among first embodiment after being installed in reading unit 103 in the image-reading device 301, is updated in the correction coefficient Rref, Gref and the Bref that use in the grey balance adjustment circuit 204.This makes: even reading unit 103 and image-reading device 301 are made respectively in the different location, also can obtain to be arranged in the suitable dateout of the grey balance adjustment circuit 204 before the color correction circuit 205.
Fig. 5 is the block diagram of reading unit 503 according to a second embodiment of the present invention.Reading unit 503 comprises mean place control circuit 701, and the original copy of ad-hoc location scope is average on its calculating main scanning direction.Mean place control circuit 701 is connected to grey balance adjustment circuit 204.Except mean place control circuit 701, other unit among second embodiment and the unit class among first embodiment are seemingly.Reading unit among second embodiment can be through ad-hoc location scope on the main scanning direction be set in mean place control circuit 701 the average position of on average specifying grey balance adjustment circuit 204 to calculate the benchmark original copys of original copy.What thus, can be based on that pixel position constant on the main scanning direction obtains on average comes the calculation correction coefficient.
A third embodiment in accordance with the invention, after reading unit 103 merged to image-reading device 801, image-reading device 801 was adjusted correction coefficient automatically and is calculated the average of benchmark original copy.
Fig. 6 is the block diagram of image-reading device 801.Image-reading device 801 comprises reading unit 103, graphics processing unit 302, load 810, sensor groups 820 and operating unit 800.In the 3rd embodiment, reading unit shown in Figure 2 103 is used as reading unit.
Control unit 710 comprises CPU (CPU) 711, read-only memory (ROM) 712, random-access memory (ram) 713, operating unit interface 714 and I/O (I/O) control unit 715.CPU 711 carries out various handling procedures.ROM 712 storing therein will be by the computer program of CPU 711 execution.When CPU 711 computer program, RAM 713 is used as the working region.Operating unit interface 714 obtains data via operating unit 800, and video data is sent to operating unit 800.I/O control unit 715 obtains testing result from sensor groups 820, and based on the result who is obtained control command is sent to the load such as motor 810 in the image-reading device 801.
The pupil becomes unit 720 to generate average gate signal, and being used to define will be by average part in the dateout Dout [9:0] that is generated by reading unit 103.More specifically; For example be set to the 1000th pixel through I/O control unit 715 default locations; Give tacit consent to width and be set to 64 points; And default line (line) number is set to 16, and based on main scanning line synchronizing signal (main scanning LSYNC signal), generate average door with view data clock signal synchronous (CLK signal).Fig. 7 is the sequential chart that is used to explain the relation between view data, main scanning LSYNC signal and the average door.
Door control unit 730 utilizes the average gate signal that becomes unit 720 to generate by the pupil to carry out view data D
OutThe coverage of [9:0] (masking), and be output image data D between low period in average gate signal only
Out[9:0].
The dateout D that CPU 711 calculates through door control unit 730
Out[9:0's] is average, judges correction coefficient Rref, Gref and Bref through using equality (5) to (7), make calculated on average can be desired value, and the correction coefficient of being judged is sent to grey balance adjustment circuit 204 through I/O control unit 715.
Though the pupil becomes unit 720 to use the default value of position, width and line number under the above-mentioned situation to generate average gate signal, the pupil becomes unit 720 can also use the value of operator's appointment to generate average gate signal.More specifically, the screen that on operating unit 800, shows the value of the person that is used for the checked operation person's appointment of whether hoping the assigned operation.If the value of person's appointment that the operator hopes the assigned operation, then the operator utilizes the value of a certain operator's appointment of operating unit 800 inputs.Thus, the pupil becomes unit 720 to receive the value of some operator's appointment through operating unit 800, and uses the value of those operator's appointments to generate average gate signal.
Provide explanation below about the processing of the adjustment correction coefficient carried out by the control unit of image-reading device 801 710.
Control unit 710 determines whether to receive from the operator via operating unit 800 order (step S11) of calculation correction coefficient.When receiving the order of this calculation correction coefficient (step S11 is), control unit 710 determines whether to receive from the operator via operating unit 800 order (step S12) of the value of using operator's appointed positions, width and line number.
When receiving the order of the value of using operator's appointment (step S12 is), control unit receives the value (step S13) of those operator's appointed positions, width and line number from the operator via operating unit 800.When not receiving the order of the value of using operator's appointment (step S12 denys), control unit 710 obtains the default value (step S14) of position, width and line number from the for example memory cell of ROM 712.
After this, the pupil becomes unit 720 to use the value or the default value of those operator's appointments to generate average gate signal (step S15).Door control unit 730 utilizes the average gate signal that is generated to carry out dateout D
OutThe coverage of [9:0].Control unit 710 receives dateout D through door control unit 730
Out[9:0].The CPU 711 of control unit 710 calculates the dateout D that is received
Out[9:0's] is average, thereby obtains first average (step S16).
Whether CPU 711 inspection second is on average in target zone (step S19).If second on average in target zone (step S19 is), then processing controls finishes.If second on average not in target zone (step S19 not), then repeating step S17 and S18, up to second on average in target zone till.
Thus,, after reading unit 103 is merged to image-reading device 801, can adjust correction coefficient automatically, and calculate the average of benchmark original copy according to the image-reading device 801 of the 3rd embodiment.This makes: even reading unit 103 and image-reading device 801 are made respectively in the different location, can obtain to be arranged in the suitable value of the dateout of the grey balance adjustment circuit 204 before the color correction circuit 205 with the operator's that reduces workload.In addition,, need not recomputate color correction parameter even the reading unit that will be installed in the image-reading device is made in the different location yet, and the irrelevant stable colour correction that can obtain and create conditions thus.
Provide explanation below about the optical unit 201 that uses in first to the 3rd embodiment any.
Fig. 9 is the mechanical schematic of optical unit 201.Optical unit 201 comprises first mirror 401, second mirror 402, the 3rd mirror 403, imaging len 404, as the charge-coupled device (CCD) 405 and the light source 406 of photo-electric conversion element.First mirror 401 is assemblied on first carriage (carrier) 901 with light source 406.Second mirror 402 and the 3rd mirror 403 are assemblied on second carriage 903.On sub scanning direction, in (SS direction shown in Figure 9), the process that below original copy 101, moves, read the original copy 101 that places on the exposure glass (exposure glass) 902 at first carriage 901 and second carriage 903.The ratio of the translational speed of the translational speed of first carriage 901 and second carriage 903 is 2: 1.
More specifically, when the irradiation system that comprises light source 406 was transmitted into original copy 101 with light, light was reflected by original copy, and was received by first mirror 401.Light is propagating into imaging len 404 by first mirror 401, first mirror 402 and 403 reflections of the 3rd mirror and after turning in regular turn.Light through imaging len 404 focuses on the surface of CCD 405.CCD 405 reads lip-deep optical data, converts this optical data into analog signal through opto-electronic conversion, and this analog signal is sent to signal processing unit 202.
Figure 10 is the mechanical schematic of another example of optical unit 201.Optical unit 201 shown in Figure 10 is mainly formed by contact image sensor (contact image senser CIS) 500.CIS 500 comprises Selfoc (registered trade mark) lens arra (SLA) 501, sensor IC (IC) 502 and light source 503a and 503b.The irradiation system that comprises light source 503a and 503b is transmitted into original copy 101 with light.Light by original copy 101 reflections passes through SLA 501, and focuses on the surface of sensor IC 502.
In the example of Fig. 9 and optical unit shown in Figure 10, original copy 101 moves relative to each other on sub scanning direction with optical unit 201.That is to say that optical unit 201 or original copy 101 can move on sub scanning direction.
As stated, according to an aspect of the present invention, when being installed in reading unit in the image-reading device, adjusted correction coefficient.This makes: even the output level of reading unit possibility Yian has been adorned the image-reading device of reading unit and changed, also can carry out suitable colour correction.
Though described the present invention with respect to specific embodiment; Open with clearly fully to carry out; But accompanying claims clearly falls into all modifications in the basic instruction that proposes, that it may occur to persons skilled in the art that and replacement structure not by restriction like this here but be interpreted as to comprise.
Claims (9)
1. image-reading device comprises:
Reading unit, the view data that it reads original copy and exports this original copy; And
Graphics processing unit, it is handled from this view data of this reading unit output, wherein
This reading unit comprises:
Optical unit, it utilizes this original copy of rayed, and receives reverberation from this original copy,
Converting unit, it will convert numerical data into from the view data that reverberation obtains,
Adjustment unit, its correction coefficient based on every kind of color is adjusted the output level of this numerical data, and
Color correction unit, it is handled based on the colour correction of carrying out the fluctuation of proofreading and correct adjusted output level according to each image-reading device and different color correction parameters, and
Before this reading unit being installed in this image-reading device, generate this correction coefficient; Make do not carry out under the situation that this colour correction handles, this output level becomes predetermined value when this reading unit reads this original copy; When being installed in this reading unit in this image-reading device, under the situation of not carrying out this colour correction processing, adjust this correction coefficient then; Make: this reading unit read be used for this reading unit being installed in this image-reading device before when generating the identical original copy of the original copy of this correction coefficient, this output level becomes this value of being scheduled to.
2. image-reading device according to claim 1 also comprises control unit, and it is this correction coefficient of adjustment when being installed in this reading unit in this image-reading device, under the situation of not carrying out this colour correction processing.
3. image-reading device according to claim 2 also comprises receiving element, and it receives the information about this original copy of a position range on main scanning direction, wherein
This control unit calculates the mean value of the numerical data in this position range that is received by this receiving element, and based on this this correction coefficient of mean value adjustment.
4. image-reading device according to claim 1, wherein before this reading unit being installed in this image-reading device with afterwards, generate this correction coefficient based on the output level that obtains through a same part that reads on this original copy main scanning direction.
5. image-reading device according to claim 1, wherein this optical unit comprises the focusing optical module.
6. image-reading device according to claim 1, wherein this optical unit comprises contact image sensor.
7. imaging device comprises:
Reading unit, the view data that it reads original copy and exports this original copy; And
Graphics processing unit, it is handled from this view data of this reading unit output, wherein
This reading unit comprises:
Optical unit, it utilizes this original copy of rayed, and receives reverberation from this original copy,
Converting unit, it will convert numerical data into from the view data that reverberation obtains,
Adjustment unit, its correction coefficient based on every kind of color is adjusted the output level of this numerical data, and
Color correction unit, it is handled based on the colour correction of carrying out the fluctuation of proofreading and correct adjusted output level according to each imaging device and different color correction parameters, and
Before this reading unit being installed in this imaging device, generate this correction coefficient; Make do not carry out under the situation that this colour correction handles, this output level becomes predetermined value when this reading unit reads this original copy; When being installed in this reading unit in this imaging device, under the situation of not carrying out this colour correction processing, adjust this correction coefficient then; Make: this reading unit read be used for this reading unit being installed in this imaging device before when generating the identical original copy of the original copy of this correction coefficient, this output level becomes this value of being scheduled to.
8. method that reading unit is installed; This reading unit utilizes the rayed original copy and receives reverberation from this original copy; To convert numerical data into from the view data that this reverberation obtains; Adjust the output level of this numerical data based on the correction coefficient of every kind of color, and based on according to each image-reading device and different color correction parameters is carried out the colour correction of the fluctuation of proofreading and correct adjusted output level and handled, this method comprises:
Generate for the first time, be included in and generate this correction coefficient before being installed in this reading unit in this image-reading device, make do not carry out under the situation that this colour correction handles, this output level becomes predetermined value when this reading unit reads this original copy;
Generate for the second time, be included as each image-reading device and generate color correction parameter;
This reading unit is installed in this image-reading device; And
When being installed in this reading unit in this image-reading device; This correction coefficient of adjustment under the situation of not carrying out this colour correction processing makes that this output level becomes this predetermined value when reading the original copy identical with the original copy that when this generates for the first time, uses.
9. method according to claim 8 wherein comprises based on the output level that obtains through that part of identical part that reads on the main scanning direction with the original copy that is used for when generate the first time, generating this correction coefficient and adjusts this correction coefficient not carrying out this correction coefficient of adjustment under the situation that this colour correction handles when being installed in this reading unit in this image-reading device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP145467/07 | 2007-05-31 | ||
| JP2007145467 | 2007-05-31 | ||
| JP081661/08 | 2008-03-26 | ||
| JP2008081661A JP2009010924A (en) | 2007-05-31 | 2008-03-26 | Image reading apparatus, image forming apparatus, and method of incorporating same |
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| CN101316313B true CN101316313B (en) | 2012-03-21 |
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|---|---|---|---|---|
| CN102595058A (en) * | 2011-12-01 | 2012-07-18 | 威海华菱光电有限公司 | Image data processing device |
| CN110582155A (en) * | 2018-06-08 | 2019-12-17 | 北京北方华创微电子装备有限公司 | plasma glow starting detection device and method and process chamber |
| CN113163066B (en) | 2021-03-25 | 2023-03-24 | 珠海奔图电子有限公司 | Image correction method, image forming apparatus, and storage medium |
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| JPH1132177A (en) * | 1997-07-08 | 1999-02-02 | Oki Electric Ind Co Ltd | Contact image sensor |
| JPH11112745A (en) * | 1997-10-03 | 1999-04-23 | Minolta Co Ltd | Image reader |
| JP2000307810A (en) * | 1999-04-26 | 2000-11-02 | Canon Inc | Image reader, image reading method and storage medium |
| JP2001186308A (en) * | 1999-12-27 | 2001-07-06 | Toshiba Corp | Contact image sensor |
| JP2003219085A (en) * | 2002-01-22 | 2003-07-31 | Canon Inc | Image reading method, image reading apparatus, and control apparatus |
| JP2005130207A (en) * | 2003-10-23 | 2005-05-19 | Murata Mach Ltd | Image processing apparatus |
| JP4123266B2 (en) * | 2005-10-24 | 2008-07-23 | 三菱電機株式会社 | Image sensor |
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| JP特开2000-307810A 2000.11.02 |
| JP特开2001-186308A 2001.07.06 |
| JP特开2003-219085A 2003.07.31 |
| JP特开2005-130207A 2005.05.19 |
| JP特开2007-116590A 2007.05.10 |
| JP特开平11-112745A 1999.04.23 |
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| JP2009010924A (en) | 2009-01-15 |
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