CN1205593A - Deviation correcting system for scanner - Google Patents
Deviation correcting system for scanner Download PDFInfo
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- CN1205593A CN1205593A CN 98101967 CN98101967A CN1205593A CN 1205593 A CN1205593 A CN 1205593A CN 98101967 CN98101967 CN 98101967 CN 98101967 A CN98101967 A CN 98101967A CN 1205593 A CN1205593 A CN 1205593A
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Abstract
A deviation correcting system for a scanner including a central processing unit producing a control signal for reading out a correcting program for correcting a scanning deviation, and a test pattern, for printing the test pattern, for scanning the printed test pattern, and then for correcting a scanning deviation; a print driver producing a control signal for printing the test pattern produced from the central processing unit, feeding the test pattern back to a scanning position; a printing unit printing the test pattern and then feeding the test pattern back to the scanning position upon application of the control signal from the print driver; an image processing unit producing a control signal for scanning the test pattern upon application of the control signal from the central processing unit; and a shuttle scanner module scanning the test pattern and producing image data upon application of the control signal from the image processing unit.
Description
The present invention relates to a kind of deviation correcting system of scanner and the method for correct scan deviation.Or rather, the present invention relates to a kind of deviation correcting system of scanner of that in multitask system, use, the quantity correct scan data deviation by control strip (slices), and a kind of method of correct scan deviation.
Multimedia system in computer or the amusement (moving the combination with still frame, sound, music and literal etc.) is dispersed throughout in the industrialization world.Consistent with the development of multi-media computer system, have increasing function as a kind of printer of external equipment.
Below with reference to the accompanying drawings to utilizing the ink-jet principle and being described as the multitask system of facsimile machine and scanner.Fig. 1 is the block diagram of the internal circuit of a common multitask system.As shown in Figure 1, this multitask system comprises people's computer (PC) 10 one by one, is used to carry out program and the generation print data that the user selects; With a multitask system 20, it both can receive from the data output of PC10 and the information that sends from the outside also can receive the scan-data that has the file, thereby handles and print the data on the printed medium.
Following description relates to the work of multitask system 20.
If a user utilizes PC10 to produce a dozen printing certificates, then this print data is applied to printer 25 by I/F23.The print data that produces from PC10 is printed machine CPU25 processing, produces a print control signal to head driver 26 thus.Head driver 26 is according to the print control signal control ink jet-print head 27 ink jet particle on printed medium that provides.Ink jet-print head 27 is by a nozzle 27a ink jet particle with 56 nozzle 27a-1, so that form image on printed medium.On printed medium, form image according to the print data that produces from PC10 in the mode of carrying out print job.
Facsimile machine CPU21 had both received the facsimile signal from telephone wire, also received from file and read facsimile data.Facsimile machine CPU21 converts the facsimile data that provides to another data that the nozzle that is suitable for ink jet-print head 27 is provided with (not shown).Facsimile data by facsimile machine CPU21 conversion temporarily is kept in the memory of facsimile printer 22, is applied to I/F23 subsequently under the control of facsimile machine CPU21.Under the control of printer cpu 24, the facsimile data of delivering to I/F23 is stored in the line storage 24.Line storage 24 maintains and the as many data of the nozzle number of ink jet-print head 27.
The facsimile data of preserving at line storage 24 removes rasterisation (derasterized) by printer cpu 25.Can go the printer cpu 25 of rasterisation to produce a control signal that is used for this facsimile data to the facsimile data that is stored in the line storage 24.This control signal that produces from printer cpu 25 is provided to head driver 26, so that the nozzle 27a-1 of ink particle by printhead 27 is ejected on the printed medium, prints an image corresponding with this facsimile data thus.This common multitask system comprises a scanner that is used for the information of sweep record on file.Use the laser scanning method of this scanner to comprise paper feeding and dull and stereotyped laser scanning.
According to the paper feeding laser scanning, when scanner was in a stationary state, the file of carrying information was moved so that scan with vertical direction.In flat-plate laser scanning, utilize by on a flat board, strafing laser beam from the vision signal of a similar reading system or from the scanner that the digital signal of a computer is modulated.
The paper feeding laser scanning is generally used, and makes the sweep speed step-down by continuous sweep.Increased the volume of this multitask system by the scanner that the paper feeding laser scanning is installed on multitask system.
In order to address this problem, a kind of reciprocating type scanner assemblies has been proposed.That is, this reciprocating type scanner assemblies is installed in a side of the ink jet-print head of ink-jet printer, has so just reduced the whole dimension of this multitask system.This reciprocating type scanner assemblies scans the file that comprises information by the literal of file being divided into given section, to improve sweep speed.If this document is an A4 paper, it is divided into 24 sections to this reciprocating type scanner assemblies so that scanning.
Utilize the multitask system of described reciprocating type scanner assemblies that the file with information is divided into predetermined section, thereby make view data become block.Exist a kind of discontinuity in the view data that becomes bulk, this discontinuity has caused print quality decline.
Therefore, the present invention is intended to a kind of deviation correcting system of scanner, and it has been eliminated widely because the restriction of correlation technique and one or more problems that shortcoming causes.
An object of the present invention is to provide a kind of multitask system, this multitask system is by the data in the reciprocating type scanner assemblies scanning document mounted thereto, and by or move left the discontinuity of removing, thereby obtain level and smooth print data to the right by in the data of section piecemeal.
Other features and advantages of the present invention will be set forth in the following description.By describing, it is very clear that a part of feature and advantage can become, and perhaps can understand by enforcement of the present invention.Will be familiar with and reach purpose of the present invention and other advantages by the special structure people that describe in specification and claims and accompanying drawing.
In order to realize these and other advantages according to the object of the invention, such as embodiment and fully describing, the invention provides a kind of deviation correcting system of scanner, it comprises: a CPU, produce a control signal and be used to read a correction program scanning deviation is proofreaied and correct, and produce a resolution chart, be used to print this resolution chart, scan the resolution chart of this printing, be used for then the one scan deviation is proofreaied and correct; A print driver produces a control signal, is used to print the resolution chart that produces from CPU, and this resolution chart is sent back to the one scan position; A print unit is according to printing the control signal printing test figure that driver provides certainly and subsequently this resolution chart being transmitted back to scanning position; A graphics processing unit produces a control signal that is used to scan this resolution chart according to the control signal that provides from CPU; With a reciprocating type scanner assemblies, scan this resolution chart and produce view data according to the control signal that provides from graphics processing unit.
According to another aspect of the present invention, a kind of offset correction method of scanner may further comprise the steps: print a resolution chart; Scan the resolution chart of this printing; Calculate the degree of deviation that this is scanned resolution chart; Be scanned the degree of deviation of resolution chart if calculated this, determine the direction of a deviation; Proofread and correct described scanning deviation with the result of this bias direction of response.
Should be understood that above-mentioned general description and following detailed description are exemplary and explanat, is will be for providing further explanation as the invention that claim limited.
Included be used to provide the present invention is further understood and explains that together with being used to the explanation of the principle of the invention describes embodiments of the invention as the accompanying drawing of this specification part.Wherein:
Fig. 1 is the block diagram of an internal circuit of common multitask system;
Fig. 2 is the block diagram according to an internal circuit of a multitask system of the present invention;
Fig. 3 has described a scanning area that is installed in the scanner on the multitask system of the present invention;
Fig. 4 has described the control program that carries out offset correction by scanning according to of the present invention;
Fig. 5 shows the process of proofreading and correct a left avertence difference according to the present invention;
Fig. 6 is a data block figure before the left avertence difference of correction chart 5;
Fig. 7 is a data block figure after the left avertence difference at correction chart 5;
Fig. 8 has described the process of proofreading and correct a right avertence difference according to the present invention;
Fig. 9 is a data block figure before the right avertence difference of correction chart 8;
Figure 10 is a data block figure after the right avertence difference of correction chart 8.
Below with reference to the accompanying drawings the preferred embodiments of the present invention are described in detail.
Fig. 2 is the block diagram according to an internal circuit of a multitask system of the present invention.
This multitask system comprises a PC100, and it responds program generation fax or print data that a facsimile signal or is used to select; An ECP210 is used to carry out the input and output from the data of PC100 and multitask system 200 generations; A system storage 200 is used to store the control program of multitask system 200, initial setting up condition data, an offset correction program and a block graphics 200a-1; A CPU230, it is by reading the data that are stored in the system storage 220 or the whole work of program control multitask system 200, produce a control signal according to fax that provides from ECP210 or print data, if one to be used for the signal of correct scan deviation selected, signals selectedly read and print offset correction program and resolution chart 200a-1 according to this, then scanning deviation is proofreaied and correct; With a print driver 240, fax or the control signal of PC print data output according to being used to of providing from CPU230 or resolution chart 200a-1, produce one and be used to print fax or print data or resolution chart 200a-1 and it is sent back to the control signal of scanning position.
This multitask system also comprises a print unit 250, and it prints fax or print data or resolution chart 200a-1 and it is sent back to scanning position according to the control signal that provides from print driver 240; A Graphics Processing Unit 260, it is handled the control signal that is used for scanning document 200a information according to a scan control signal that provides from CPU230, or according to a resolution chart 200a-1 that control signal scanning is printed and sent back to by print unit 250 who provides from resolution chart 200a-1; A reciprocating type scanner assemblies 270, it is according to the information or the sweep test figure 200a-1 that are loaded with among the control signal scanning document 200a from graphics processing unit 260, thus the generation view data; A video memory 280, the view data that the temporary transient storage of the control signal of its response image processing unit 260 is produced by reciprocating type scanner assemblies 270; With a rasterizer (rasterizer) 290, it makes the view data rasterisation that is stored in the video memory 280 and this complex data is outputed to print driver 240 under the control of graphics processing unit 260.
Following description relates to the offset correction program in the system storage that is stored in multitask system 200.
With reference to figure 4,, comprise the following steps: to print the resolution chart 200a-1 (S210) that is stored in the system storage (Fig. 2) according to the control program of offset correction of the present invention; In case resolution chart 200a-1 is printed out, 200a-1 scans (S220) to this resolution chart; Calculating is scanned the degree of deviation (S230) of resolution chart 200a-1; Determine to make the direction (S240) of resolution chart 200a-1 deviation; With this correct scan deviation (S250) as a result of response.
Step S250 comprises following substep: if during scanning step S240 described resolution chart 200a-1 deviation left, then proofread and correct left avertence poor (S250a); If, then proofread and correct right avertence poor (S250a) with the deviation to the right of described resolution chart 200a-1 during scanning step S240
Following detailed relates to the offset correction process.
In case PC100 receives a facsimile signal that sends from the outside then provides print data and facsimile data by ECP210 to CPU230, and ECP210 is used as the parallel interface module of two-way communication.290 pairs of facsimile data rasterisations that provided of rasterizer are provided CPU230, and the data of rasterisation are provided to print driver 240.The print data that is provided to the CPU230 of multitask system 200 also is sent to print driver 240.
The charge-coupled device (CCD) that is used for reciprocating type scanner assemblies 270 has the 128-pixel size, and A4 (2551 * 2507; File 200a 300DPI) is divided into 27 scanning blocks.Like this, for one is scanned, reciprocating type scanner assemblies 270 moves horizontally after scanning one vertical row, scans a vertical row then.The level of reciprocating type scanner assemblies 270 and vertical moving are finished by LF motor 250a and CR motor 250e.27 of 270 pairs of divisions of reciprocating type scanner assemblies scan so that scan A 4 file 200a.
View data by reciprocating type scanner assemblies 270 scannings is converted to numerical data by the ADC260a of graphics processing unit 260.Graphics processing unit 260 is proofreaied and correct in light and shade, γ, per inch pixel (DPI) conversion, edge increase the weight of, image is proofreaied and correct aspect the mistake diffusion or the like.The view data that is converted to numerical data by graphics processing unit 260 is by rasterizer 290 rasterisations, and is temporarily stored in the video memory 280.Video memory 280 is used as temporary buffer.Under the control of CPU210, be sent to print driver 240 or PC100 by rasterizer 290 rasterisations and the view data that is stored in the video memory 280 by ECP210.The data that are sent to print driver 240 are printed again by print member 250, and if these data are sent to PC100, then it is stored by PC100 or is handled so that storage by a preset sequence.
Described data are pressed the address and the data/address bus displacement of arrow indication, and reciprocating type scanner assemblies 270 scans file 200a under the clock CLK control from graphics processing unit 260.According to one of general function of user-selected multitask system 200, if a signal is applied to CPU230 by the choice device (not shown) that is used to check or proofread and correct the deviation of reciprocating type scanner assemblies 270, then CPU230 carries out this program according to this signal that provides by loading the offset correction programs from system storage 220.According to this program, CPU230 is execution in step S210 at first.After packing resolution chart 200a-1 into from system storage 220, CPU230 is sent to print driver 240 to this figure by ECP210.
If calculate the degree of deviation of scan image data, at step S240, CPU230 determine this be scanned data whether to the right or left avertence poor.When this data left during deviation, CPU230 execution in step S250a, thereby the deviation left of view data during the correct scan.In addition, this is scanned deviation to the right, its execution in step S250b, thereby the deviation to the right of view data during the correct scan if CPU230 determines (S240).By the offset correction process among the clock CLK execution in step S250 that is applied to reciprocating type scanner assemblies 270, these will do more detailed description with reference to the accompanying drawings.
Fig. 5 shows the process to a pixel offset correction between first pixel in independent a slice (" a " among Fig. 3) and the 128th pixel.As shown in Figure 5, when in first pixel and the 128th pixel each was divided into 32 pixels and is converted into 8 ADC 260a (Fig. 2), it had 256 values.With 256 values of hexadecimal representation state, be divided into 00H to FFH.
Step S230 comprises following substep: being served as that a mean value is sought on the basis by final pixel in the second portion 2 of four/resolution chart 200a-1, and calculate a degree of deviation; Being served as that a mean value is sought on the basis by final pixel in the third part 3 of four/resolution chart 200a-1, and calculate a degree of deviation; Being served as that a mean value is sought on the basis by final pixel in the 4th part 4 of four/resolution chart 200a-1, and calculate a degree of deviation; Being served as that a mean value is sought on the basis by final pixel in the first 1 of four/resolution chart 200a-1, and calculate a degree of deviation; With being served as that a mean value is sought on the basis by final pixel in half of the first 1 of four/resolution chart 200a-1, and calculate a degree of deviation.
In second substep, serve as the mean value that the basis obtains one ± 2 pixels with the 64th pixel (final pixel in the second portion), when obtaining the mean value of ± 2 pixels,
1. under the situation of 00H≤mean value≤44H, carry out with third part 3 comparing;
2. under the situation of 00H≤mean value≤83H, whole deviation with 1 pixel;
3. under the situation of 84H≤mean value≤C3H, whole deviation with 1.5 pixels;
4. under the situation of C4H≤mean value≤EAH, whole deviation with 2 pixels; With
5. under the situation of EBH≤mean value≤FFH, carry out with first 1 comparing.
In the situation 1 in whole 1 pixel deviation, the situation 2 in whole 1.5 pixel deviations and the situation 3 value separately of whole 2 pixel deviations be stored in the system storage 220.In case this pixel deviate is stored in the system storage 220 fully, serves as that the basis obtains a mean value then, and other pixels and this mean value are compared with regard to size, thereby find a degree of deviation with final pixel in the second portion 2.The result of response condition 1.With final pixel in the third part 3 serves as that the basis obtains a mean value and other pixels and this mean value are compared to obtain a degree of deviation.With final pixel (the 96th pixel of third part 3) is the mean value that the basis obtains one ± 2 pixels.In case with the final pixel is the mean value that the basis obtains one ± 2 pixels,
6. under the situation of 00H≤mean value≤44H, carry out with the 4th part 4 comparing;
7. under the situation of 45H≤mean value≤83H, whole 0.75 pixel deviation is determined;
8. under the situation of 84H≤mean value≤C3H, whole 1 pixel deviation is determined;
9. under the situation of C4H≤mean value≤EAH, whole 1.25 pixel deviations are determined; With
10. under the situation of EBH≤mean value≤FFH, carry out with first 1 comparing.
In the situation 7 in whole 0.75 pixel deviation, the situation 8 in whole 1 pixel deviation and the situation 9 value separately of whole 1.25 pixel deviations be stored in the system storage 220.In case this pixel deviate is stored in the system storage 220 fully, serves as that the basis obtains a mean value then, and other pixels and this mean value are compared with regard to size, thereby find a degree of deviation with final pixel in the third part 3.The result of response condition 6.With final pixel in the 4th part 4 serves as that the basis obtains a mean value and other pixels and this mean value are compared to obtain a degree of deviation.With final pixel (the 128th pixel of the 4th part 4) is the mean value that the basis obtains one ± 2 pixels.In case with the final pixel is the mean value that the basis obtains one ± 2 pixels,
11. under the situation of 00H≤mean value≤44H, determining does not have deviation;
12. under the situation of 45H≤mean value≤83H, determining does not have deviation;
13. under the situation of 84H≤mean value≤C3H, define whole 0.75 pixel deviation;
14. under the situation of C4H≤mean value≤EAH, define whole 1 pixel deviation;
15. under the situation of EBH≤mean value≤FFH, carry out with first 1 comparing.
The result who does not have deviation in the situation 12, and in the situation 13 in whole 0.75 pixel deviation and the situation 1 each value of whole 1 pixel deviation be stored in the system storage 220.In case this pixel deviate is stored in the system storage 220 fully, response condition 5,10 and 15 accordingly result serve as that the basis obtains a mean value with final pixel in the first 1, thereby obtain a deviate.
With final pixel in the first 1 is the mean value that the basis obtains one ± 2 pixels.In case with the 32nd pixel is the mean value that the basis obtains one-10 pixel,
16. under the situation of 45H≤mean value≤83H, define whole 2 pixel deviations;
17. under the situation of 84H≤mean value≤C3H, define whole 3 pixel deviations;
18. under the situation of C4H≤mean value≤EAH, define whole 4 pixel deviations;
19. under the situation of EBH≤mean value≤FFH, execution compares with half of first 1.
In the situation 16 in whole 2 pixel deviations, the situation 17 in whole 3 pixel deviations and the situation 18 value separately of whole 4 pixel deviations be stored in the system storage 220.In case this pixel deviate is stored in the system storage 220 fully, serves as that the basis obtains a mean value then, and other pixels and this mean value are compared with regard to size, thereby find a degree of deviation with final pixel in the first 1.The result of response condition 18.With final pixel in the first 1 serves as that the basis obtains a mean value and other pixels and this mean value are compared to obtain a degree of deviation.
With the final pixel (the 16th pixel) in half of first 1 is the mean value that the basis obtains one ± 2 pixels.In case with this final pixel is the mean value that the basis obtains one ± 2 pixels,
20. under the situation of mean value≤83H, define whole 4 pixel deviations;
21. under the situation of 84H≤mean value, CPU230 will be this situation as test failure to control reciprocating type scanner assemblies 270.
By described step resolution chart 200a-1 is scanned, and utilize the view data of scanning to calculate a deviate.If the step S230 by sweep test figure 200a-1 finds a deviate, CPU230 determine this be scanned resolution chart 200a-1 whether to the right or left avertence poor.
If CPU230 determines the mean value of 238 pixels among (step S240) resolution chart 200a-1 and equal FFH, it sets a reference value so that determine resolution chart 200a-1 is deviation to the right.If CPU230 utilizes this reference value to determine its deviation left, its execution in step S250a is poor to proofread and correct left avertence.
This is scanned resolution chart 200a-1 deviation 1 pixel left if CPU230 determines (step S230), shadow data piece 3,4,37 and 38 are moved right is used for proofreading and correct, so that to being scanned by the data block in the length Q scope of the file 200a of actual scanning 1 to 40 (Fig. 6).As shown in Figure 7, shadow data piece 3,4,37 and 38 is scanned to proofread and correct described deviation.If CPU230 determines that (step S240) is scanned resolution chart 200a-1 deviation to the right, its execution in step S250b.
As shown in Figure 8, if existence deviation to the right then obtains a degree of deviation by situation 1 to 20.If CPU230 determines to pass through situation 1 to 20 resolution chart 200a-1 deviation 1 pixel to the right, shadow data piece 1,2,39 and 40 is moved to the left to be used for proofreading and correct, so that scan the data block 1 to 40 among the file 200a that remains on Fig. 9, as shown in Figure 7.
Shown in Fig. 6 and 7, if deviation left, the data corresponding with the 128th pixel to the 64 pixels of lower part are moved right so that proofread and correct.That is, a slice is further scanned in the one scan end point.When its to the right during deviation, as shown in Figures 9 and 10, the data block of the 128th pixel to the 64 pixels on the top in the length Q of file 200a is moved to the left a slice, so as with a kind of can to since the mode that the scanning deviation that the irregular scanning of reciprocating type scanner assemblies causes is proofreaied and correct proofread and correct deviation.
According to the present invention, for issuable image deviations when utilizing reciprocating type scanner assemblies that the data that are divided into piece are carried out vertical scanning is proofreaied and correct, data in the piece are moved toward a left side or right with the elimination inhomogeneities, thereby realize the print quality that possibility is best.
Those skilled in the art will be appreciated that, can make various improvement and variation to the deviation correcting system of scanner of the present invention, and can not break away from the spirit and scope of the present invention.Therefore, the present invention will cover various improvement and variation and their equivalent that falls in the unexamined claim scope.
Claims (8)
1. scanner deviation correcting system comprises:
A CPU, produce a control signal and be used to read correction program so that scanning deviation is proofreaied and correct, and produce a resolution chart, be used to print this resolution chart, scan the resolution chart of this printing, also produce then the one scan deviation is proofreaied and correct;
A print driver produces a control signal, is used to print the resolution chart that produces from CPU, and this resolution chart is fed to the one scan position;
Printing equipment is according to printing the control signal printing test figure that driver provides certainly and subsequently this resolution chart being transmitted back to scanning position;
Image processing apparatus produces a control signal that is used to scan described resolution chart according to the control signal that provides from CPU; With
A reciprocating type scanner assemblies scans this resolution chart and produces view data according to the control signal that provides from image processing apparatus.
2. according to the deviation correcting system of claim 1, further comprise a system storage, be used to store correction program and resolution chart.
3. according to the deviation correcting system of claim 1, further comprise a video memory, the control signal that responds described image processing apparatus is used to store the view data that produces from described reciprocating type scanner assemblies.
4. the offset correction method of a scanner comprises the following steps:
Print a resolution chart;
Resolution chart to this printing scans;
Calculate the degree of deviation of this resolution chart that is scanned;
Be scanned the degree of deviation of resolution chart if calculated this, determine the direction of a deviation; With
The result who responds this bias direction proofreaies and correct described scanning deviation.
5. according to the offset correction method of claim 4, wherein the method for calculation deviation degree comprises following substep:
Be mean value of basic calculation and each pixel and this mean value compared with regard to size with final pixel in the second portion of resolution chart, to calculate a degree of deviation;
Be mean value of basic calculation and each pixel and this mean value compared with regard to size with final pixel in the third part of resolution chart, to calculate a degree of deviation;
Be mean value of basic calculation and each pixel and this mean value compared with regard to size with final pixel in the 4th part of resolution chart, to calculate a degree of deviation;
Be mean value of basic calculation and each pixel and this mean value compared with regard to size with final pixel in the first of resolution chart, to calculate a degree of deviation; With
Be mean value of basic calculation and each pixel and this mean value compared with regard to size with final pixel in half of the first of resolution chart, to calculate a degree of deviation.
6. according to the offset correction method of claim 4, wherein the method for correct scan deviation comprises following substep:
If the resolution chart inclined left, the correction left avertence is poor; With
If the resolution chart inclined right, correction right avertence is poor.
7. according to the offset correction method of claim 6, wherein in the substep of proofreading and correct the left avertence difference, data block is moved right poor in order to proofread and correct left avertence.
8. according to the offset correction method of claim 6, wherein in the substep of proofreading and correct the right avertence difference, it is poor that data block is diverted from one use to another left to proofread and correct right avertence.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 98101967 CN1205593A (en) | 1997-05-22 | 1998-05-22 | Deviation correcting system for scanner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| KR19893/97 | 1997-05-22 | ||
| KR70905/97 | 1997-12-19 | ||
| CN 98101967 CN1205593A (en) | 1997-05-22 | 1998-05-22 | Deviation correcting system for scanner |
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| CN1205593A true CN1205593A (en) | 1999-01-20 |
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| CN 98101967 Pending CN1205593A (en) | 1997-05-22 | 1998-05-22 | Deviation correcting system for scanner |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100407758C (en) * | 2004-08-02 | 2008-07-30 | 精工爱普生株式会社 | Methods and systems for correcting color distortions |
| CN100466682C (en) * | 2003-12-02 | 2009-03-04 | 富士施乐株式会社 | Image forming device, pattern forming method and its program |
-
1998
- 1998-05-22 CN CN 98101967 patent/CN1205593A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100466682C (en) * | 2003-12-02 | 2009-03-04 | 富士施乐株式会社 | Image forming device, pattern forming method and its program |
| CN100407758C (en) * | 2004-08-02 | 2008-07-30 | 精工爱普生株式会社 | Methods and systems for correcting color distortions |
| US7525702B2 (en) | 2004-08-02 | 2009-04-28 | Seiko Epson Corporation | Methods and systems for correcting color distortions |
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