CN200980117Y - A device for the automatic adjustment of halftone screen for the consistency of the printing effect of a printer - Google Patents
A device for the automatic adjustment of halftone screen for the consistency of the printing effect of a printer Download PDFInfo
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- CN200980117Y CN200980117Y CN 200620151605 CN200620151605U CN200980117Y CN 200980117 Y CN200980117 Y CN 200980117Y CN 200620151605 CN200620151605 CN 200620151605 CN 200620151605 U CN200620151605 U CN 200620151605U CN 200980117 Y CN200980117 Y CN 200980117Y
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Abstract
The utility model provides a print gaze screen self-learning automatic adjust device, which can automatically adjust the consistency of print effect of various printers, substantially composed of four basic modules as a system calculation control module, a print output module, a scanning input module, and an automatic adjust module. The utility model can resolve the gray heterogeneous of printed picture caused by print accuracy, screen suspension method, non-uniform ink powder adsorption or non-uniform selenium drum property of prior printer, or resolve the problem as inconsistency printed effects of different printers.
Description
Technical field
The utility model has related to printing screen technology, regulates the consistency of printing effect of real various printers automatically by the self study of printing screen.
Background technology
Beat/the popularizing of photocopier, promoted the development of China's office automation energetically.By the end of the end of the year 2005, the recoverable amount of China's various types of office supplies is: 1678.8 ten thousand of ink-jet printers, 5,060,000 of laser printers, 203.8 ten thousand of all-in-one multifunctional machines, 1,660,000 of photocopiers.
The beating of China/photocopier market occupies main status in the world, and global printer sales volume was 1.21 hundred million in 2005, and China has sold 7,776 ten thousand altogether, accounts for 64.3% of global sales, and wherein the domestic market is sold 8,540,000, has exported 6,922 ten thousand.2005 annual duplicating machine Toshibas reach 20% approximately in the occupation rate of market of China, sell nearly 62,000 of platform number, and China's photocopier market capacity is about 300,000.A large amount of at present important confidential information and vital document etc. all are as memory carrier with the paper medium.But along with ultrafast personal computer, high-resolution laser are beaten/invention and the commercial applications of photocopier, scanner and charge coupled device, confidential information, testimonial material, vital document are arbitrarily illegally printed, are duplicated, are spread or the like, cause a large amount of important informations of individual, enterprise and country to run off, the social politics and economy order is on the hazard.When printing, utilize the screen technology of printing can be implemented in and carry out imbedding of information on the paper medium, accomplish the encryption of classified papers, the functions such as anti-duplicating of vital document.This technology mainly changes the gray scale information of carrying out by the state of adjusting screen to be imbedded, and therefore requires than higher for the printer printing quality.
There are Toshiba, Konica Minolta, Epson, Ricoh, Canon, Hewlett-Packard, Sharp, Epson etc. in existing international famous printer producer, the printer of each family's development all has very big difference in the contain electric weight and the flowability etc. of net suspension mode, ink powder, thereby totally different to its printing effect of identical image.Amount of toner in normal use reduces and the gray scale inequality that becomes in addition, and the toner cartridge electrostatic force that causes that is damaged weakens the printing gray scale inequality that causes.Net suspension mode has ten thousand lines, frequency modulation, amplitude modulation, error diffusion etc. now, and different net suspension modes is also very big to the gray scale influence of image printing.Therefore in the digitlization that realizes printed matter, be necessary the printer of existing variety classes, model is carried out the consistency adjustment.
Summary of the invention
The purpose of this utility model is to solving the different inconsistent problems of printer printing effect, the sensitivity problem of non-uniform of transducer when having reading images at image-input device, and printer is in the uneven problem of gray value of when printing printing, proposes one and printer and image-input device linked together can carry out the self-adjusting device of self study.
For achieving the above object, technical solution of the present utility model provides a kind of printing screen self study of carrying out consistency of printing effect at various printers, self-adjusting device, this device is mainly by system's s operation control module 101, print module 102, scan module 103, AutoScreen adjusting module 104, dot matrix adjusting module 105, AutoScreen data writing module 106, AutoScreen data memory module 107, AutoScreen data read module 108, dot matrix is imbedded module 109, and several basic modules constitute, and concrete connected mode is as follows:
The two-way input/output terminal of system's s operation control module 101 respectively with print module 102, scan module 103, AutoScreen adjusting module 104 is connected, AutoScreen adjusting module 104 connects dot matrix adjustment unit 1, and wherein dot matrix adjustment unit 1 is made up of dot matrix adjusting module 105 and AutoScreen data writing module 106; Storage in the dot matrix adjustment unit is in AutoScreen data memory module 107, imbed data that the AutoScreen data read module 108 in the unit reads by dot matrix and be sent to dot matrix and imbed module 109 and handle, be connected with print module 102 again.
And the self-adjusting device of described printing screen self study is that the shape of site is adjusted according to the gray value of given standard screen site.
And, system's s operation control module 101, adjust interface 120, keyboard 121, AutoScreen adjusting module 104, dot matrix adjusting module 105, AutoScreen data writing module 106, dot matrix is imbedded module 109, and AutoScreen data read module 108 and AutoScreen storage 107 are realized by personal computer, or realize by each independent hardware chip, or mix with the hardware cell of other correlation functions.
And, described standard screen site comprises amplitude modulation screen AM screen site, frequency modulation screen FM screen site, error is disperseed the screen site, and ten thousand wire-mesh screen sites are in interior printing screen site, and the circle that comprises that can constitute the screen site, parallelogram, ring shape, triangle, linear at interior geometrics or physics figure.
The beneficial effects of the utility model are: behind the consistency of printing effect screen site self study automatic regulating apparatus that imports printer, can adjust parameter at the linked network that it is suitable that each concrete printer provides a cover, make any printer can print identical printing effect, promptly the gray scale homogeneous, to the screen dot matrix image printing effect unanimity of the specific form represented with the site.
Description of drawings
Fig. 1 is the self-adjusting system structure of device figure of the consistency of printing effect screen of printer.
Fig. 2 is a standard testing cell picture schematic diagram.
Fig. 3 is the standard testing image carries out image input back result through imageing sensor a schematic diagram.
Fig. 4 is the schematic diagram that the permutation and combination of change minimum print site realizes the method for adjustment of gray scale.
Fig. 5 is the schematic diagram that big site form is concentrated in the amplitude modulation of 4-12 level gray value.
The different form screen of Fig. 6 ring shape dot matrix is adjusted form, and gray scale is the schematic diagram of 8-12.
The 101st, system's s operation control module.
102 print modules.
The 103rd, scan module.
The 104th, the AutoScreen adjusting module.
The 105th, the dot matrix adjusting module.
The 106th, AutoScreen data writing module.
The 107th, the AutoScreen data memory module.
The 108th, the AutoScreen data read module.
The 109th, dot matrix is imbedded module.
The 120th, adjust the interface.
The 121st, keyboard.
The 1st, the dot matrix adjustment unit
The 2nd, dot matrix is imbedded the unit
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment, details are as follows to embodiment, structure, feature that foundation the utility model provides:
Screen is adjusted principle automatically
At the different gamma characteristics of different printers and different net suspension modes, adopt different adjustment processing methods, by print scanned circular treatment up to obtaining best deviation compensation.
The different gamma characteristics of printer are meant different printers, and the minimum that is printed is printed unit, and promptly a printable minimum site that goes out varies in size.The difference of the linked network form mode of printer is meant that existing net suspension mode has independent or mixed net suspension modes such as amplitude modulation, frequency modulation, ten thousand lines, error diffusion, also refers to the difference of linked network angle in addition.
Can adopt by the queueing discipline of adjusting minimum print unit for the site of light gray degree and to adjust shallow gray value.Is that the amplitude modulation form is finished than the dark gray zone by increasing single site size.For the specific form site, for example consistency of printing effect is realized by the geometric distributions of adjusting the screen dot matrix in the ring shape site of hollow.
Inhomogeneous for the printing gray scale that causes owing to reasons such as slight scuffing of the very few inequality of ink powder, toner cartridge that occurs in the normal use, can be simply by strengthening dot numbers in these zones and the site size realizes gray scales lifting.
In the given test pattern of the utility model embodiment, with the principle that four kinds of adjustment units are the automatic screen of example introduction, not only these are several, can design other forms of adjustment unit as requested.
Fig. 1 is the self-adjusting system structure of device figure of the consistency of printing effect screen of printer.Concrete adjustment principle is as follows:
(1) system's s operation control module 101 of the consistency of printing effect screen automatic regulating apparatus of printer starts printout module 102, this printout module 102 generates a width of cloth standard testing image automatically according to system parameters, and this image is made up of according to certain queueing discipline even point zone, concentrated dot area, specific form dot area, no dot area.In internal memory, note simultaneously the parameter of screen dot matrix in each zone, start the printout engine then, by tested printer prints output image.This moment, what obtain was unjustified, as to contain the feature of a printer own test pattern, and itself feature comprises: net suspension mode, ink powder situation, toner cartridge damaged condition, the comprehensive embodiment of features such as print resolution.After the printout, forward system's s operation control module 101 to.
(2) system's s operation control module 101 starts scanning engines by order notice scan module 103, automatic scan printer output image, after the been scanned, with the image data storage of scanning in internal memory.Control centre forwards 101 system's s operation control modules to.
(3) 101 system's s operation control modules start AutoScreen adjusting module 104 reads image data, and adjusting module at first carries out the image preliminary treatment, carries out image distortion correction.Positioning image carries out grid to different shape screen distributed areas and divides then.By the average gray value of white space computation paper anticipatory remark body, should be worth as the image background fiducial value, it is poor that the gray value of all pixels on the image and fiducial value are done, and its result adjusts the foundation that each regional screen dot matrix distributes as us.The adjustment criterion is as follows:
1. by the gray value Φ=φ of each screen site of altimetric image
1, φ
2..., φ
nGray value Ψ=ψ with each screen site of standard picture, screen site
1, ψ
2..., ψ
nBetween the deviate of screen site gray value, if deviate then should not adjusted in the zone, otherwise adjust this area grayscale automatically according to the deviate of this zone and standard value in standard value error allowed band, adjustment form such as Fig. 4 institute are not.
2. the specific size and the deviate auto scaling of standard value that a little bigger zone goes out according to printer prints, dot matrix adjustment form as shown in Figure 5.
3. the specific form dot matrix is adjusted form as shown in Figure 6.Each zone adjustment all is to adjust step by step, situation can not occur shaking up and down.After adjusting end, generate new test pattern, deposit in the internal memory, note the adjustment parameter simultaneously according to adjusting result parameter.AutoScreen data writing module 106 with adjusted storage in AutoScreen data memory module 107, the AutoScreen data read module 108 of imbedding unit 2 by dot matrix reads the AutoScreen view data, imbeds module 109 through dot matrix adjusted data are sent to print module 102 printouts.So far finish once and adjust.
Through above scanning, adjustment, three processes of printing repeatedly behind the several times, in allowed band, just can finish adjustment to printer up to the deviation of the gray value of every of test pattern and standard value.In the human eye resolution error, solve the inhomogenous problem of output image gray scale through above-mentioned adjusted printer output result, eliminate different printers identical image output effect disunity problem.
Fig. 2 is a standard testing cell picture schematic diagram.1 arrow indication is dot matrix zone, little site among the figure, and 2 arrows are the big site of circle dot matrix and concentrate dot matrix zone, big site that 3 arrows are white space.Concentrate big dot matrix to can be used as the sign of information " 1 ", the big dot matrix of circle can be used as the sign of information " 0 ".This standard testing image is distributed in whole fields of paper medium, constitutes a width of cloth standard testing image.After this standard testing image gone out by high-precision press printing, can compare to the deviate of the gray value of each position of measurement image transducer.
Fig. 3 is the standard testing image carries out image input back result through imageing sensor a schematic diagram.Though the standard testing image by the combination of standard testing cell picture is high-visible, but measure its concrete numerical value and just can find that the gray scale of white space is not " 0 ", the gray value of site part neither be deceived entirely, even the site of circle part become round dot individually, will make mistakes during information Recognition like this.
Fig. 4 is the schematic diagram that the permutation and combination of change minimum print site realizes the method for adjustment of gray scale.Select different sites combining form for use at the gamma characteristic of different printers.As Fig. 1 (a, b) shown in, increase gray scale by the simple dot number that increases uniformly.(c, d) oblique line with original site changes horizontal direction into, promptly changes the gamma characteristic of site by the direction that changes the site, and (e, f) e is two sites of oblique line directions increase in original site.F respectively increases a site in level and oblique line directions, promptly increases simultaneously the gamma characteristic of the dot matrix quantity change site of site again by the direction that changes the site.
Fig. 5 is the schematic diagram that the amplitude modulation AM screen of 4-12 level gray value is concentrated big site form.According to the method for Fig. 5, can concentrate the gray value of big site to carry out the increase of gray value or the adjustment that reduces to amplitude modulation AM screen.For error diffusion screen site, corresponding gray value adjustment all can be carried out with reference to the method for Fig. 5 in ten thousand wire-mesh screen sites.
Fig. 6 is the schematic diagram of ring shape specific form screen site dot matrix method of adjustment.As shown in Figure 6: being that gray value is 8 ring shape specific form screen dot matrix (a), (b) is that gray value is 10 ring shape specific form screen site dot matrix, (c) is that gray value is 12 ring shape specific form screen site dot matrix.Can carry out the increase of gray value or the adjustment of minimizing to ring shape specific form screen site dot matrix with reference to method shown in Figure 6.
Below just provided the self study of half-tone screen code, in fact the example of automatic regulating apparatus, can carry out the combination of circuits of wide range of forms with reference to above-mentioned example, and the design of various standard pictures unit.The combination of circuits of the form of sample whatsoever, as long as and whatsoever the design of the standard picture unit of sample has comprised printer, circulation adjustment between the imageing sensor makes different printers realize that the consistency of the gray scale of printing every field all belongs within the scope of the present utility model.
The utility model has the advantages of and be:
1. can realize different printers by self study, automatically adjust, realize the consistent of screen net-point printing The property.
2. can make different printers by self study, automatically adjust, print out the printed matter of same effect.
3. even in the relatively poor situation of the ratio of precision of printer, also can print out reasonable printed matter.
4. the printing effect of printer and conforming acquisition do not rely on paper surface brightness, image sensing The parameter value of device, printer.
Claims (4)
1, a kind of printing screen self study of carrying out consistency of printing effect at various printers, self-adjusting device, its feature is mainly by system's s operation control module 101, print module 102, scan module 103, AutoScreen adjusting module 104, dot matrix adjusting module 105, AutoScreen data memory module 107, dot matrix is imbedded module 109, several basic modules constitute, concrete connected mode is as follows: the two-way input/output terminal of system's s operation control module 101 respectively with print module 102, scan module 103, AutoScreen adjusting module 104 is connected, AutoScreen adjusting module 104 connects dot matrix adjustment unit 1, and wherein dot matrix adjustment unit 1 is made up of dot matrix adjusting module 105 and AutoScreen data writing module 106; Storage in the dot matrix adjustment unit is in AutoScreen data memory module 107, imbed data that the AutoScreen data read module 108 in the unit reads by dot matrix and be sent to dot matrix and imbed module 109 and handle, be connected with print module 102 again.
2, a kind of self-adjusting device of printing screen self study that carries out consistency of printing effect at various printers according to claim 1, it is characterized in that: the self-adjusting device of described printing screen self study, be that the shape of site is adjusted according to the gray value of given standard screen site.
3, a kind of self-adjusting device of printing screen self study that carries out consistency of printing effect at various printers according to claim 1, it is characterized in that: system's s operation control module 101, adjust interface 120, keyboard 121, AutoScreen adjusting module 104, dot matrix adjusting module 105, AutoScreen data writing module 106, dot matrix is imbedded module 109, AutoScreen data read module 108 and AutoScreen storage 107 are realized by personal computer, or realize by each independent hardware chip, or mix with the hardware cell of other correlation functions.
4, a kind of self-adjusting device of printing screen self study that carries out consistency of printing effect at various printers according to claim 1, it is characterized in that: described standard screen site comprises amplitude modulation screen AM screen site, frequency modulation screen FM screen site, error is disperseed the screen site, and ten thousand wire-mesh screen sites are in interior printing screen site, and the circle that comprises that can constitute the screen site, parallelogram, ring shape, triangle, linear at interior geometrics or physics figure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620151605 CN200980117Y (en) | 2006-12-08 | 2006-12-08 | A device for the automatic adjustment of halftone screen for the consistency of the printing effect of a printer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620151605 CN200980117Y (en) | 2006-12-08 | 2006-12-08 | A device for the automatic adjustment of halftone screen for the consistency of the printing effect of a printer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN200980117Y true CN200980117Y (en) | 2007-11-21 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620151605 Expired - Fee Related CN200980117Y (en) | 2006-12-08 | 2006-12-08 | A device for the automatic adjustment of halftone screen for the consistency of the printing effect of a printer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200980117Y (en) |
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2006
- 2006-12-08 CN CN 200620151605 patent/CN200980117Y/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| DD01 | Delivery of document by public notice |
Addressee: Aboluo Informatin Technology Co., Ltd., Tianjin City Document name: Notification of Passing Examination on Formalities |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20071121 Termination date: 20121208 |