CN100427309C - Ink-jet head calibration method - Google Patents

Ink-jet head calibration method Download PDF

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CN100427309C
CN100427309C CN 200410101308 CN200410101308A CN100427309C CN 100427309 C CN100427309 C CN 100427309C CN 200410101308 CN200410101308 CN 200410101308 CN 200410101308 A CN200410101308 A CN 200410101308A CN 100427309 C CN100427309 C CN 100427309C
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pattern
strip
ink jet
jet head
group
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CN 200410101308
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Chinese (zh)
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CN1788998A (en )
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乐孟芬
许瑞仓
韩孝羽
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财团法人工业技术研究院
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Abstract

本发明公开了一种喷墨头校准的方法,是利用喷印一组特殊设计的测试图案,此测试图案包含陆续喷印并相互重叠的数个第一条状图样组与数个第二图样,依序侦测第一条状图样组与第二图样的重叠状态,并提取其中一个重叠状态,如此便可找出最佳对准条件,用以可达到校准喷墨头的目的,提高打印的质量。 The present invention discloses a method of calibrating an ink jet head, printing using a set of specially designed test pattern, the test pattern comprising a succession of overlapping and printing a first plurality of strip-shaped patterns and a plurality of second pattern group sequentially detecting overlapping state of the first pattern group and the second stripe pattern, and extracts an overlapping state where, so you can find the optimum alignment conditions can be achieved for the purpose of calibrating the ink jet head, enhance the printing the quality of.

Description

一种喷墨头校准的方法 A method of calibrating an ink jet head

技术领域 FIELD

本发明涉及一种喷墨头校准的方法,特别是涉及一种通过对测试图案取得重叠状态,而获得最佳对准条件的喷墨打印机的喷墨头校准的方法。 The present invention relates to a method of calibrating an ink jet head, in particular, it relates to a method of calibrating an ink jet head test pattern acquired overlapping state, to obtain optimal alignment condition of the ink jet printer.

背景技术 Background technique

一个具有打印功能的喷墨式打印机可以用来打印图像及文件,如果要打印图像数据,只要经过适当图像及半色调处理后,再通过喷墨头在媒体上往复运动,并且在媒体上所欲喷上墨滴的位置,驱动喷墨头的喷孔喷射墨滴至该处, 便完成图像的打印。 Inkjet printer having a printing function may be used to print an image file and, if you want to print image data, as long as the image properly and halftone processing, and then by the inkjet head reciprocates in the media, and the media in a desired spray ink droplets position, driving the ink jet head orifice ejecting ink droplets to the premises, the image printing is completed. 一般而言,喷墨头是由许多平行排列的喷孔所形成,如图 Generally, the ink jet head is formed by a number of orifices arranged in parallel, FIG.

1A〜图1D所示,分别代表黑色、青色、洋红及黄色喷墨头。 FIG 1A~ 1D, respectively represent black, cyan, magenta and yellow ink jet head. 为了达到相片质量(Photographicquality)的打印,在往复打印时必须先做喷墨头的对准校正,例如喷嘴11来回双向打印时的对准,或是喷嘴11与13在同一打印方向的对准以确保墨滴所打的位置是在正确的位置上。 To achieve the photo quality (Photographicquality) printing, the print must first alignment correction in the reciprocating ink jet head, for example, when the alignment of the nozzle 11 back and forth bi-directional printing, or nozzles 11 and 13 are aligned in the same direction to the printing ensure that the ink droplets by playing position is in the correct position. 通常墨滴喷射是靠位置译码器,例如光学尺产生的信号当作喷射墨滴的同步信号,当喷墨头去与回理论上到达同一个位置时,墨滴就要打在同一位置,但是,由于喷墨头有一个横向运动速率, 使得墨水击发后离开喷嘴时会横向飞行一段时间才到达纸面,对于同一个光学尺信号,上述墨滴向左飞与向右飞的现象将造成墨滴打印位置的偏移,此外, 有些打印机去回打印速度不同更是加大偏移的现象,如果没有作校正将会降低打印质量。 Typically droplet ejection position by a decoder, such as a signal generated by the optical scale synchronizing signal ejecting ink droplets, when the ink jet head and back to reach the same theoretical position, the ink droplets will hit the same position, However, since the ink jet head has a lateral rate of movement, such that after firing the ink flying laterally from the nozzle for some time before reaching the paper, for the same linear scale signals, the above-described ink droplet to fly to the left and right flying phenomenon will cause offset printing ink drop position. in addition, some go back to the printer to print at different speeds is to increase the offset phenomenon, if not for the correction will reduce print quality.

为了解决上述问题,US Pat. No.5289208提供一种喷墨头校准方法,如图2A所示,首先利用打印机第一种颜色的喷墨头沿着由左到右的方向打印出特定间隔的垂直线段10以作为参考线,再以第二种颜色的喷墨头沿着由左到右的方向打印出另一组垂直线段12,此组垂直线段12存在特定偏移量并紧邻上述第一组垂直线段IO,以作为单向不同色喷墨头的校正;或是如图2B所示, 针对同一个喷墨头作双向校正,首先沿着由左到右的方向打印出特定间隔的垂直线段14,再沿着由右到左的方向打印出不同偏移量的垂直线段16。 To solve the above problems, US Pat. No.5289208 to provide a calibration method for an ink jet head shown in Figure 2A, first, using a first color ink jet printer head to print out at specific intervals in a direction from left to right 10 vertical line as a reference line, and then to print a second color ink-jet head from left to right in a direction perpendicular to another set of the segment 12, a vertical segment 12 is present in this group specific offset and adjacent to said first set the IO vertical line, as the correct way different color ink jet head; or as shown in FIG. 2B, for the same two-way correcting ink jet head, first print in a direction perpendicular certain intervals from left to right line 14, and then print out different offsets of a vertical line segment 16 in a direction from right to left. 最后利用光学扫描装置扫描上述垂直线段10与12、 14与16,以判定最佳对准条件。 Finally, the above-described optical scanning device scans vertical line 10 and 12, 14 and 16 to determine the optimal alignment conditions.

此法必须先用光学扫描装置扫描上半部在扫描下半部,分别确定上下半部垂直线段所在位置,最后再决定最佳对准条件,速度上显得较慢。 This method must first half of the optical scanning device scans scanning the lower half, the lower half of the vertical line are determined location, and finally decide optimum alignment conditions, it is a slower speed.

此外,如图3所示,USPat.No.6390587所用的方式是在媒体上打印一组测试图案20,该测试图案20包含第一种颜色的喷墨头所打印的条块(Bar)22 及第二种颜色的喷墨头所打印的条块(Bar)24,而且上述两组条块22、 24位于同一高度并彼此交错重复排列,基本上这两组条块22、 24所形成的周期性信号在相位上应该相差180。 Further, as shown, USPat.No.6390587 manner as used in FIG. 3 is a bar (Bar) 22 to print a series of test patterns on the medium 20, the test pattern 20 comprises a first color ink jet printing head and bar (Bar) a second color inkjet printing head 24, and the above-described two strips 22, 24 at the same height and repeatedly arranged interleaved with each other, the two sets of bars substantially cycle 22, 24 is formed of the signal to be in phase difference of 180. ,最后通过光学扫描装置侦测测试图案20的反射率,以得到上述两组条块22、 24的相位差,根据该相位差用以修正双色单向打印的偏移量,可得到最佳的对准条件,同样的方法也用于同色的双向校正。 Finally, the detection by the optical scanning device 20 the reflectivity of the test pattern, the phase difference to obtain two strips 22, 24, according to the offset phase for correcting the color of unidirectional printing, the best available aligning conditions, the same method is also used with the two-way color correction. 此法必须计算出第一种的喷墨头所打印的每个条块的所在位置,再讨算第二种颜色的喷墨头所打印的每个条块的所在位置,最后再计算出二者的相位差,计算时间长且过程复杂。 This method calculates the position of each bar must be located in a first ink jet print head, and then discuss the location of each bar count of a second color inkjet print head, and finally calculate the two 's phase, calculation time and the process is complicated.

发明内容 SUMMARY

鉴于以上的问题,本发明提供一种喷墨头校准的方法,是使用一组特殊设计的测试图案,再通过对此组测试图案侦测其重叠状态,以获得最佳对准条件, 而可达到自动校正喷墨头时令其对准的目的,用以大体上解决现有技术所存在的问题。 In view of the above problems, the present invention provides a method of calibrating an ink jet head, using a specially designed set of test patterns, then the overlapping state by detecting that this set of test patterns to obtain the optimal alignment condition, but may make alignment purposes when the ink jet head reaches the automatic correction to substantially solve the problems of the prior art.

因此,为达上述目的,本发明所提供的喷墨头校准的方法,包含下列步骤: Accordingly, to achieve the above object, a method of calibrating an ink jet head according to the present invention is provided, comprising the steps of:

首先,使用喷墨打印机去喷印数个第一条状图样组,且各第一条状图样组是由 First, using an inkjet printer to print a first plurality of strip-shaped pattern group, and each group is composed of a first stripe pattern

数个平行等间距的第一条状图样所构成,然后,喷印数个第二图样,且各第二图样与各第一条状图样组分别相互重叠,再依序侦测第一条状图样组与第二图 A plurality of equally spaced parallel stripe pattern composed of a first, then a second number of printing patterns, and each pattern, and each of the first strip a second set of patterns overlap each other, respectively, and then sequentially detects the first strip and a second pattern group of FIG.

样的重叠状态,最后,分析各个重叠状态的信息,并提取其中一个重叠状态, 而找出最佳对准条件,以校准喷墨头。 Like overlapping state, and finally, analysis information of each of the overlapping state, and to extract a overlapping state, and to find the optimal alignment condition, to calibrate the ink jet head.

以下结合附图和具体实施例对本发明进行详细描述,但不作为对本发明的限定。 The present invention will be described in detail in conjunction with the accompanying drawings and the specific embodiments, but not limit the present invention.

附图说明 BRIEF DESCRIPTION

图1A〜图1D分别为现有技术黑色、青色、洋红及黄色喷墨头;图2A与图2B为现有技术不同色喷墨头的单向校正与同一色喷墨头的双向校正时的测试图案的示意图; FIG 1A~ prior art FIG. 1D, respectively, black, cyan, magenta and yellow ink-jet head; FIG. 2A and 2B is a unidirectional bidirectional correction color correction prior art ink jet head and the ink jet head of the same color a schematic diagram of the test pattern;

图3为另一现有技术喷墨头校准方法的测试图案的示意图; 图4为本发明喷墨头校准方法的流程图; FIG 3 is a schematic diagram of another conventional ink jet head test pattern calibration method art; FIG. 4 is a flowchart of the calibration method of the invention, the ink jet head;

图5A〜图5D为本发明第一实施例的使用单色喷墨头的双向校正时的测试图案的示意图; FIG 5A~ FIG. 5D is a schematic diagram of the test pattern when the monochrome ink jet head of a first embodiment of the bidirectional correcting embodiment the invention;

图6A〜图6D分别为本发明第一实施例的使用光学扫描装置读取图5A〜图5D的测试图案的平均反射率的曲线图; FIG 6A~ first embodiment of FIG. 6D are read using an optical scanning apparatus of the embodiment of FIG 5A~ graph showing the average reflectance of the test pattern of the present invention, FIG. 5D;

图7A〜图7D为本发明第二实施例的使用双色喷墨头的单向校正时的测试图案的示意图; FIG 7A~ schematic FIG 7D is used when a test pattern color ink jet head of the second embodiment of the present invention, unidirectional correction;

图8为本发明第三实施例的测试图案的示意图; A schematic diagram of the test pattern of the third embodiment of the present invention, FIG 8;

图9为本发明第四实施例的测试图案的示意图; 9 a schematic view of a fourth embodiment of a test pattern of the embodiment of the present invention;

图IO为一种易造成判断不易的测试图案的示意图; FIG schematic IO as a determination difficult test pattern easily caused;

图11A〜图IIJ为本发明使用感光组件扫描过测试图案时反射信号的理论变化值; FIG 11A~ FIG IIJ photosensitive member of the present invention changes the theoretical value when the scanned test pattern of the reflected signal;

图12为本发明根据图11A〜图IIJ所测得的信号强度曲线图; FIG 12 according to the present invention the signal intensity curve of FIG 11A~ FIG IIJ measured;

图13A〜图13J为本发明在最佳对准条件下使用感光组件扫描过测试图案 FIG 13A~ FIG. 13J photosensitive member of the present invention the test pattern is scanned under optimal alignment conditions

时反射信号的理论变化值;及 Theoretical variation of the reflected signal value; and

图14为本发明根据图13A〜图13J所测得的信号强度曲线图,并与图12 The signal strength measured graph according to FIG. 13J FIG 13A~ present invention. FIG. 14 and FIG. 12

的曲线斜率作比较。 Comparing the slope of the curve.

其中,附图标记: 16 Wherein, reference numerals: 16

10、 12、 14 10, 12, 14

11、 13 11, 13

20 20

22、 24 22, 24

30、 50、 80 30, 50, 80

32、 52、 70 32, 52, 70

40、 60、 82 40, 60, 82

42、 62、 72 42, 62, 72

99 99

D

92 94 9294

垂直线段喷嘴 Vertical nozzle segment

测试图案条块 Bar test pattern

第一条状图样组第一条状图样 A first set of the first strip pattern stripe pattern

第二条状图样感光组件S、 Sl、 Smax 斜率5S 斜率差距 The second photosensitive element stripe pattern S, Sl, Smax slope slope gap 5S

具体实施方式 detailed description

图4所示为本发明所提供的喷墨头校准的方法的流程图,其主要流程包含下列步骤:步骤100,首先,喷印数个第一条状图样组;步骤200,各第一条状图样组包含有数个平行等间距的第一条状图样;然后,喷印数个第二图样; 步骤300,各第二图样与各第一条状图样组分别相互重叠;再依序侦测第一条状图样组与第二图样的重叠状态;步骤400,最后,提取其中之一重叠状态, 而校准喷墨头。 Figure 4 flowchart of a method provided by the ink jet head of the present invention, the calibration, the main process comprising the following steps: Step 100, first, printing a plurality of first strip-shaped pattern group; step 200, each of the first shaped pattern group comprising several parallel spaced first strip pattern and the like; and, a second plurality of printing patterns; step 300, each second strip-shaped pattern with the pattern of the first group are overlapped with each other; and then sequentially detect overlapping state of the first pattern group and the second stripe pattern; step 400, and finally, extracting one overlapping state, and the ink jet head alignment.

以下通过数个实施例进一步对本发明的实施步骤作详细说明。 The following examples further by a number of the embodiments described in detail steps of the present invention. 本发明的实施例中,乃使用一台具有打印功能的喷墨打印机,当打印机侦测到有新的喷墨头被装上或是接受到使用者所下的校正指令时,打印机会自行打印测试图案。 Embodiments of the present invention is the use of an inkjet printer having a printing function, when the printer detects that the new ink jet head is mounted on the user or the correction instruction is accepted, the printer prints on their own test pattern.

图5A〜图5D所示为本发明的第一实施例使用单色喷墨头的双向校正时的测试图案的示意图,包括如下步骤:步骤IOO,乃是利用单色喷墨头先沿着由右到左的方向喷印出由数条第一条状图样32所组成的第一条状图样组30;步骤200,再沿着由左到右的方向喷印由数条第二条状图样42所组成的第二图样40;步骤300,每一个第一条状图样32与第二条状图样42都在垂直方向上呈现具有一定间距的水平线条,且上述第一条状图样32与第二条状图样42 互相交错排列,接着,以光学扫描装置读取于图5A〜图5D中每个由第一条状图样组30与第二图样40所构成的测试图案的平均反射率,如图6A〜图6D所示,来判断第一条状图样组30与第二图样40的重叠状态;步骤400,如果用于描述平均反射率的信号强度曲线的正缘的斜率S达到最大值Smax,如图6B 所示,即代表第一条状图样组30与第二图样40 FIG 5A~ FIG. 5D schematic bidirectional test pattern when correcting monochromatic ink jet head of the embodiment using the first embodiment of the present invention is shown, comprising the following steps: the IOO, but monochromatic ink jet head along a first Right-to-left direction of the printing of a first strip-shaped pattern group 30 is composed of a first number of stripe pattern consisting of 32; step 200, then the number of printing the second stripe pattern in a direction from left to right a second pattern consisting of 4240; step 300, each of the first 32 and the second stripe pattern stripe patterns having horizontal lines 42 are rendered a certain distance in the vertical direction, and said first and second stripe patterns 32 two strip patterns 42 are arranged staggered to each other, and then, to read the optical scanning apparatus in FIG. 5D, each 5A~ average reflectance of the test pattern by the first strip-shaped pattern group 30 and the second pattern 40 constituted as FIG 6A~ 6D, the first strip to determine the overlapping state of the second pattern group 30 of pattern 40; step 400, if a positive edge of the signal used to describe the intensity curve of the average reflectance maximum slope Smax S , shown in Figure 6B, which represents a first strip-shaped pattern group 30 and the second pattern 40 在垂直方向上(进纸方向)的重叠性最好,就如图6B所示,且在该预设的偏移量条件下,有喷墨头的最佳对准条件,采用该组偏移参数以确保有最佳打印质量。 In the vertical direction (paper feed direction) of the best overlap, it is shown in Figure 6B, and at the predetermined offset conditions, optimal alignment condition of the ink jet head, using the set of offset parameters to ensure the best print quality.

图7A〜图7D所示为本发明的第二实施例使用双色喷墨头的单向校正时的测试图案的示意图,包括步骤:步骤IOO,与第一实施例不同处,在于本实施例是先利用第一种颜色的喷墨头沿着由右到左的方向喷印出由数条第一条状图样52所组成的第一条状图样组50;步骤200,再利用第二种颜色的喷墨头以同方向喷印由数条第二条状图样62所组成的第二图样60;步骤300,随后也以光学扫描装置读取于图7A〜图7D中每个由第一条状图样组50与第二图样60所构成的测试图案的平均反射率,并判断第一条状图样组50与第二图样60的重叠状态;步骤400,当用于描述平均反射率的信号强度曲线的正缘的斜率达到最大值,即代表第一条状图样组50与第二图样60在垂直方向上(进纸方向)的重叠性最好,如图7B所示,并提取该组偏移参数,就可获得喷墨头的最佳对准条件,以保有最佳打印质 FIG 7A~ FIG. 7D schematic way the test pattern during correction of color ink-jet head embodiment using a second embodiment of the present invention is shown, comprising the steps of: the IOO step, different from the first embodiment, the present embodiment is that the first using a first color ink jet printing head in a direction from right to left stripe pattern of the first group consisting of the number of the first strip pattern 52 consisting of 50; step 200, then the use of a second color printing a second pattern of the ink jet head 60 by a number of second stripe pattern 62 composed of the same direction; step 300, to subsequently read each of the optical scanning apparatus 7D in FIG 7A~ by section view of a first shaped pattern group 50 and the average reflectance of the test pattern of the second pattern 60 is formed, and a first overlapping state determination pattern group 50 and the second stripe pattern 60; step 400, when the signal strength is used to describe the average reflectance the slope of the rising edge of the curve reaches the maximum value, which represents the first strip 50 is preferably set pattern and a second pattern 60 overlapping in the vertical direction (paper feed direction), 7B, and extracts the partial shifting parameter optimal alignment condition can be obtained an ink jet head, in order to maintain optimum print quality 量。 the amount.

上述实施例的喷墨头校准的方法,其第一条状图样的第一条状图样与第二图样的第二条状图样以相同宽度为例;实际上第一条状图样与第二条状图样的宽度可以不同,如图8所示,本发明的第三实施例的测试图案中,其第二条状图样72的宽度较第一条状图样70为宽。 Method of calibrating an ink jet head of the above-described embodiment, the first strip having a first pattern and a second pattern stripe pattern width of the second strip-shaped pattern in the same Example; in fact a first pattern and the second strip shaped pattern width may be different, as shown in FIG. 8, the test pattern of the third embodiment of the present invention, the width of the second strip pattern 72 than the pattern 70 is a first strip width.

或者,如图9所示为本发明的第四实施例的测试图案的示意图,其第二图样82为块状图案,并与第一条状图样组80部分重叠,可以避免如图10所示的状况,图中显示呈水平线条的第一条状图样组卯与第二图样92的第二条状图样94在水平方向上重叠,当利用读取测试图案的平均反射率来判断第一条状图样组卯与第二图样92的重叠状态时,所得到的反射信号会无法有明显的差异,而造成判断不易。 Alternatively, the test pattern is a schematic view of a fourth embodiment of the present invention is shown in FIG. 9, a second pattern 82 is a block pattern, and the overlapping portion of the first strip-shaped pattern group 80, shown in Figure 10 can be avoided condition, there is shown a first horizontal stripe pattern of lines and a second set of sockets pattern 94 of the second strip pattern 92 overlap in the horizontal direction, when using the average reflectance of the test pattern is read to determine the first overlapping state and the d-shaped pattern group 92 of the second pattern, the resulting reflected signal would not significantly different, judged easily caused.

另外要补充的是,如图11A〜图11J所示为本发明的使用感光组件99扫描过测试图案时反射信号的理论变化值;当感光组件99通过测试图案时,感光组件99会侦测到测试图案的反射信号,而获得多组反射信号组,假设在单位时间内测试图案前进一个单位距离,此处为固定数目的像素(pixel)值,而且感光组件测到的信号强度与反射光强度成正比,则感光组件99感测到的每组反射信号组可以利用对应的格子点来计数,如图UA〜图11J中,其对应的格子点个数分别为6、 20、 38、 56、 67、 63、 50、 31、 13、 3个,则可以做出信号强度与测试图案位置相关的信号强度曲线图,如图12所示。 Further to add, as shown in FIG. 11J 11A~ photosensitive member of the present invention using the 99 scanned theoretical variation value of the test pattern reflected signal; when the photosensitive member 99 through the test pattern, the photosensitive member 99 will detect test pattern reflected signal, the reflected signal to obtain a plurality of sets groups, assuming a unit time advances by one unit from the test pattern, where the value of a fixed number of pixels (pixel), and the photosensitive member measured signal strength and the intensity of the reflected light groups each reflected signal proportional to the photosensitive element 99 may be sensed by the corresponding lattice point count, as shown in FIG. 11J UA~, the number of grid points corresponding respectively 6, 20, 38, 56, 67, 63, 50, 31, 13, 3, signal intensity may be made to the graph of signal intensity associated with the position of the test pattern, as shown in Fig. 分析该曲线的斜率S1即可得知在最佳对准条件下必能找到一个斜率最大值Smax,如图13A〜 图13J所示,即为在最佳对准条件下使用感光组件99扫描过测试图案时反射信号的理论变化值,且图14所示为其信号强度与测试图案位置相关的信号强度曲线图,并显示其斜率Smax与前述斜率Sl相较之下的斜率差距SS;利用此原理,可以找出喷墨头的最佳对准参数。 Analysis of the slope of the curve S1 that will be able to find the optimal alignment condition of a maximum value Smax of slope, as shown in FIG. 13J 13A~ shown, using a photosensitive element 99 that is scanned in the optimal alignment condition theoretical variation value of the test pattern of the reflected signal, and the signal strength of the test pattern in FIG location-related signal strength graph for Figure 14, and shows the slope of the slope Smax and the SS gap Sl slope compared below; exploit principle, you can find the best alignment parameters of the inkjet head. 当实际的量测是测量纸张背景的反射信号时,该反射信号波形会反过来,但是仍以最陡峭的部分代表最佳对准条件。 When the actual measured reflection signal is measured when the paper background, the reflected signal waveform in turn, the steepest part of the representative still optimal alignment conditions.

综上所述,本发明所提供的喷墨头校准的方法是通过特殊的测试图案设计,可直接用于打印结果计算,计算过程十分简易且迅速,尤其可利用对于测试图案的反射信号的测试,并分析反射信号的正缘斜率,找出斜率最大者即可得到最佳对准条件,来达到喷墨头校准的目的,从而提高打印质量。 In summary, the calibration method of the ink jet head of the present invention are provided by a special design of the test pattern, the print result can be directly used for calculation, the calculation process is very fast and simple, in particular can be used to test for a test pattern of the reflected signal and analyzing the positive edge of the slope of the reflectivity signal, to find the greatest slope obtained optimum alignment conditions, to achieve the purpose of calibrating the ink jet head, thereby improving the print quality.

当然,本发明还可有其他多种实施例,在不背离本发明精神及其实质的情况下,熟悉本领域的技术人员当可根据本发明作出各种相应的改变和变形,但这些相应的改变和变形都应属于本发明所附的权利要求的保护范围。 Of course, the present invention may have many other embodiments without departing from the spirit and essence of the present invention, those skilled in the art can make various corresponding modifications and variations according to the present invention, these corresponding modifications and variations shall fall within the scope of the appended claims.

Claims (9)

  1. 1、一种喷墨头校准的方法,其特征在于,包含如下步骤: 喷印多个第一条状图样组,每个该第一条状图样组包含有多个平行等间距的第一条状图样; 喷印多个第二图样,每个该第二图样与每个该第一条状图样组分别相互重叠; 一个所述第一条状图样组与一个所述第二图样组成一个测试图案,光学扫描装置分别读取每个测试图案的平均反射率,以获得每个测试图案中所述第一条状图样组与所述第二图样的重叠状态,每一所述测试图案的所述平均反射率组成一对应于所述重叠状态的信号强度曲线;以及提取正缘斜率最大的信号强度曲线所对应的重叠状态对应的偏移参数,并依照该偏移参数校准该喷墨头。 1, an ink jet head alignment method comprising the steps of: printing a first plurality of strip-shaped pattern group, each pattern group comprising a first strip of the first pitch and the like of a plurality of parallel shaped pattern; printing a second plurality of patterns, each pattern, and each of the second to the first set of stripe patterns are overlapped with each other; a stripe pattern of said first group and said second test pattern consisting of a pattern, the optical scanning device are read average reflectivity of each test pattern to obtain the status of each test pattern overlapping said first strip-shaped pattern and the second pattern group, each of the test pattern of the a composition has an average reflectance corresponding to the intensity curve overlapping state signal; extracting an overlapping state and the maximum positive edge slope curve corresponding to the signal intensity corresponding to the offset parameters, and calibration of the ink jet head in accordance with the offset parameter.
  2. 2、 根据权利要求1所述的喷墨头校准的方法,其特征在于,该第一条状图样组与该第二图样由同一喷墨头以反向喷印所形成。 2, the method of calibrating an ink jet head according to claim 1, wherein the first strip and the second pattern group in a reverse pattern is formed by printing the same ink jet head.
  3. 3、 根据权利要求1所述的喷墨头校准的方法,其特征在于,该第一条状图样组与该第二图样由不同的喷墨头依序喷印所形成。 3, the method of calibrating an ink jet head according to claim 1, characterized in that the first strip pattern and the second pattern are sequentially set by the different ink jet printing head is formed.
  4. 4、 根据权利要求1所述的喷墨头校准的方法,其特征在于,各该第二图样包含有多个平行等间距的第二条状图样,并交错于该第一条状图样之间。 4. The method of calibrating an ink jet head according to claim 1, wherein each of the second pattern comprises a second strip pattern pitch of a plurality of parallel, etc., and in the interleaving pattern between the first strip .
  5. 5、 根据权利要求4所述的喷墨头校准的方法,其特征在于,该第二条状图样与该第一条状图样具有相同的间距。 5. The method of calibrating an ink jet head as claimed in claim 4, wherein the second strip-shaped pattern, and the first strip-shaped pattern having the same pitch.
  6. 6、 根据权利要求5所述的喷墨头校准的方法,其特征在于,各该第一条状图样与各该第二条状图样具有相同宽度。 6. The method of calibrating an ink jet head as claimed in claim 5, wherein each of the first strip pattern and the pattern of each of the second strip having the same width.
  7. 7、 根据权利要求1所述的喷墨头校准的方法,其特征在于,各该第二图样为一块状图样,与各该第一条状图样组部分重叠。 7. The method of calibrating an ink jet head as claimed in claim 1, wherein each of the second pattern is a block pattern, and each of the overlapped first strip portion pattern group.
  8. 8、 根据权利要求1所述的喷墨头校准的方法,其特征在于,该光学扫描装置读取多个由所述第一条状图样组与所述第二图样组成的测试图案的平均反射率,以获得所述第一条状图样组与所述第二图样的重叠状态的步骤,通过侦测各该第一条状图样组与各该第二图样的反射信号来获得该平均反射率。 8, an ink jet head according to claim calibrating method according to claim 1, wherein the average reflectance of the optical scanning device reads the plurality of stripe pattern by the first group and the second test pattern consisting of pattern step rate, to obtain the first group and the stripe pattern overlapping state of the second pattern by detecting each of the first strip pattern group and a second pattern of each of the reflected signal to obtain the average reflectance .
  9. 9、 根据权利要求8所述的喷墨头校准的方法,其特征在于,该侦测各该第一条状图样组与各该第二图样的反射信号的步骤,包含有下列步骤:依序侦测各该第--条状图样组与各该第二图样,并获得多个反射信号组; 根据各该反射信号组形成多条信号强度曲线对应于各该重叠状态;及计算各该信号强度曲线的斜率。 9, an ink jet head according to claim calibration method of claim 8, wherein each of the detection pattern of the first strip set in each step of the second reflected signal pattern, comprising the steps of: sequentially detecting each of the first - strip-shaped pattern group and each of the second pattern, and obtains a plurality of reflected signal groups; forming a plurality of signal intensity curve in accordance with each of the reflected signal is set corresponding to each of the overlapping state; and calculating each of the signal the slope of the intensity curve.
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US5289208A (en) 1991-10-31 1994-02-22 Hewlett-Packard Company Automatic print cartridge alignment sensor system
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