WO2012163212A1 - 盲文喷墨打印装置及打印方法 - Google Patents

盲文喷墨打印装置及打印方法 Download PDF

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WO2012163212A1
WO2012163212A1 PCT/CN2012/075013 CN2012075013W WO2012163212A1 WO 2012163212 A1 WO2012163212 A1 WO 2012163212A1 CN 2012075013 W CN2012075013 W CN 2012075013W WO 2012163212 A1 WO2012163212 A1 WO 2012163212A1
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printing
braille
module
ink
level
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PCT/CN2012/075013
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English (en)
French (fr)
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张原�
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北京美科艺数码科技发展有限公司
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Publication of WO2012163212A1 publication Critical patent/WO2012163212A1/zh

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41J—TYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J3/00—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed
    • B41J3/32—Typewriters or selective printing or marking mechanisms characterised by the purpose for which they are constructed for printing in Braille or with keyboards specially adapted for use by blind or disabled persons
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B41—PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41M—PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; COLOUR PRINTING
    • B41M3/00—Printing processes to produce particular kinds of printed work, e.g. patterns
    • B41M3/16—Braille printing

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  • the invention enjoys the priority of the Chinese prior application for the invention patent according to Article 29 of the Patent Law, the application number is 201110144961.6, and the application date is May 31, 2011, the entire contents of which are hereby incorporated by reference. .
  • the invention relates to a Braille inkjet printing device and a printing method, in particular to an inkjet printing device which adopts a plurality of printing modules with piezoelectric nozzles to form a Braille by one inkjet superposition, and the high speed and high resistance achieved by the device Abrasive and tactile Braille inkjet printing methods.
  • Braille is a text designed for the blind.
  • Blair Braille is composed of 1-6 three-dimensionally convex dots.
  • the blind person senses the meaning of Braille by touching the number and position of the bumps.
  • Braille is commonly used in public places such as elevators, packaging, and Braille books. Since Braille is often touched and squeezed, this requires Braille to be more resistant to wear.
  • the Braille International Standard stipulates that its outstanding height must be guaranteed to be no less than 1mm, and the blind person can perceive the meaning of Braille when touched.
  • the prior art mainly obtains Braille by engraving or extruding.
  • plastic and acrylic sheet materials are generally engraved into a Braille by a three-dimensional engraving machine; metal materials (such as stainless steel sheets) are generally formed by punching out convex dots to form Braille;
  • Such as books, boxes, generally through the Braille printer or printing press with mechanical impact and rolling methods to form a raised or concave Braille point, Braille books and printed products are generally used in 120g thick kraft paper of higher hardness and strength As a printing material.
  • the kraft paper used in this method needs to be made of a good wood pulp raw material, and the cost is high.
  • a special typesetting process is required, and the pressure on the paper is required to be uniform, and the method is formed by this method.
  • Braille is highly susceptible to disappearing after being stressed or read by blind people for a long time, making Braille books difficult to identify or unavailable.
  • the method of engraving and extruding to form Braille bumps has low production efficiency, high labor intensity, high cost of Braille products, and the production of Braille books is very cumbersome.
  • the object of the present invention is to provide a Braille inkjet printing with fast printing speed, uniform Braille contour rules, uniform size, smooth surface, and good wear resistance and readability.
  • Device and printing method are provided.
  • the Braille inkjet printing apparatus of the present invention comprises at least two printing modules, a curing device and a control device in accordance with the number of printing modules, the printing modules being arranged side by side along the moving direction of the printing medium, and each printing module is printed.
  • One layer of data, the printing module at the printing start position is the lowest height from the printing medium, the height of the printing module after the printing start position is gradually increased from the printing medium, and the printing module of the next level is higher than the printing module of the upper level.
  • each curing device is disposed downstream of each level of the printing module for curing the ink layer printed by the printing module; the control device is for controlling the printing module
  • the upper nozzle ejects ink droplets onto the print medium to form the desired Braille, and controls the curing device to cure the ink layer ejected onto the print medium.
  • a terminal curing device is further disposed at the terminal of the Braille inkjet printing device.
  • the distance between the curing device and the printing module can be adjusted along the moving direction of the printing medium.
  • the thickness of the ink layer printed by each level of the printing module may be the same or different, and the heights of the corresponding lower-level printing modules may be the same or different from the height of the upper-level printing module.
  • the ink layer printed by each level of the printing module has a circular shape, and the circular size printed from the printing module at the printing start position to the last-level printing module is gradually decreased.
  • the ink layer printed by each level of the printing module has a circular shape, and each of the printing modules prints the same circular size.
  • each of the printing modules is adjustable in height from the printing medium.
  • each level of print module is superimposed at the same location on the print medium.
  • At least one printing nozzle is disposed on the printing module, and a plurality of nozzle holes are disposed on the printing nozzle.
  • the curing device is a pre-curing device for pre-curing the ink droplets ejected by the printing module to form a desired ink droplet shape.
  • the pre-curing device and the final curing device are both a UV lamp or a far-infrared curing device.
  • the Braille inkjet printing method of the present invention is specifically:
  • each printing module to separately print a layer constituting the braille printing data, and control the curing device to solidify the printed image, and the plurality of layers are superimposed to form a Braille of a desired height.
  • the thickness of the ink layer printed by each level of the printing module may be the same or different, and the heights of the corresponding lower-level printing modules may be the same or different from the height of the upper-level printing module.
  • the ink layer printed by each level of the printing module has a circular shape, and the circular size printed from the printing module at the printing start position to the last-level printing module is gradually decreased.
  • the ink layer printed by each level of the printing module has a circular shape, and each of the printing modules prints the same circular size.
  • each level of print module is superimposed at the same location on the print medium.
  • the present invention has the following advantages:
  • the printing speed is fast, and is very suitable for application in an industrial production line.
  • the printing module prints a layer curing device
  • the image is solidified to prevent the ink droplets from flowing and deforming during the movement, and the contour of the dot of the Braille is guaranteed, and the dot size is uniform.
  • Braille bumps are formed by multi-layer progressively decreasing dots, and the braille bump surface is a smooth curve, which makes the Braille readability increase.
  • FIG. 1 is a schematic structural view of a Braille printing device in the prior art
  • Figure 2 is a plan view of Figure 1;
  • FIG. 3 is a schematic structural view of a Braille printing apparatus according to the present invention.
  • Figure 4 is a plan view of Figure 3;
  • Figure 5 is a schematic diagram of Braille printing control in the present invention.
  • Figure 6 is a graph showing the printing speed of the prior art Braille
  • Figure 7 is a graph showing the printing speed of Braille according to the present invention.
  • a Braille inkjet printing apparatus in one embodiment of the present invention includes five printing modules 1, 2, 3, 4, and 5, and prints modules 1, 2, 3, and 4 during printing.
  • 5 is fixedly mounted on the bracket, the printing medium 6 moves in one direction, and the printing modules 1, 2, 3, 4, 5 comprise at least one head, and the head ejects ink onto the printing medium 6 to form a desired Braille.
  • the head in the present invention is a high-resolution head to achieve one-pass printing, usually with a resolution of 300 DPI or more.
  • the spacing between the printing modules 1, 2, 3, 4, 5 is fixed along the direction of movement of the printing medium, and the height of the printing modules 1, 2, 3, 4, 5 from the printing medium 6 can be adjusted in the vertical direction.
  • the heights of the printing modules 1, 2, 3, 4, 5 from the printing medium 6 are adjusted to be unequal, and the printing modules 1, 2, 3, 4, 5 are separated from the printing medium along the moving direction of the printing medium.
  • the height of 6 is increased step by step, that is, the height of the printing module 1 at the paper feeding end is the smallest from the printing medium 6, and the height of the printing module 5 at the paper discharging end is the largest from the printing medium 6.
  • the height of the ink layer formed on the printing medium 6 by the single-pass print is x
  • the height of the printing module 1 from the printing medium 6 is Y
  • the height of the printing module 2 from the printing medium 6 is Y+x
  • the printing module 3 The height of the print medium 6 is Y+2x
  • the height of the print module 4 from the print medium 6 is Y+3x
  • the height of the print module 5 from the print medium 6 is Y+4x.
  • the number of printing modules in the Braille inkjet printing device of the present invention is determined by the height of the required Braille and the height of the single layer of ink layer.
  • the Braille printing device The number of print modules required is three. If the height of the Braille is 7x, the number of print modules required in the Braille printing device is seven, and so on.
  • the Braille inkjet printing apparatus in one embodiment of the present invention further includes a curing device in accordance with the number of printing modules, and the curing devices 11, 21, 31, 41, 51 are spaced apart from the printing modules 1 and 2 along the moving direction of the printing medium. Downstream of 3, 4, and 5, depending on the actual selected printing ink, the curing device may select a UV curing device or a far infrared curing device.
  • the Braille layer 12 ejected by the printing module 1 is pre-cured by the curing device 11
  • the Braille layer 22 ejected by the printing module 2 is superimposed on the cured Braille layer 12, and so on, until printing.
  • Modules 1, 2, 3, 4, and 5 all spray a layer of Braille, and all Braille layers 12, 22, 32, 42, 52 are superimposed to obtain a Braille of a required height, and an exit is provided at the exit end of the inkjet printing apparatus.
  • the final curing device 61 finally solidifies the printed braille, and the final curing device 61 can select a UV curing device or a far infrared curing device, wherein the final curing device 61 has a curing strength greater than that of the curing device 11, 21, 31, 41, 51. strength.
  • the curing device Since the printing module ejects the ink once during the printing process, the curing device disposed besides pre-cures the newly ejected ink droplets, thereby effectively preventing the ink from flowing, ensuring the shape of the ink droplets, and uniform in size.
  • a final curing device is disposed at the print exit end to ensure that the printed Braille is fully cured, preventing the printed image from being damaged during the delivery process due to the ink droplets being fully cured.
  • the distance between the curing device and the printing module in the moving direction of the printing medium in the present invention is adjustable to ensure the shape regularity and size uniformity of the ink droplets when different inks and printing media are used.
  • the Braille inkjet printing apparatus in a specific embodiment of the present invention further includes a control device 7, and the control device 7 controls the data distribution device 8 to distribute the Braille print data to the printing modules 1, 2, and 3. 4, 5, while the control device 7 also controls the curing device 11, 21, 31, 41, 51 to cure the printed image.
  • the specific steps of the Braille inkjet printing method of the present invention include: determining the number of layers of ink to be printed according to the height of the single layer of ink after curing and the required Braille height.
  • the number of layers of the printing ink is five layers;
  • the Braille print data is designed to be composed of a layer corresponding to the number of ink layers according to the number of layers of ink to be printed.
  • the Braille print data is composed of five layers; the Braille printing device is arranged in the same number as the number of ink layers.
  • Printing module and curing device the number of printing modules and curing devices in this example are five; the control device controls the printing modules 1, 2, 3, 4, 5 to print the layers 12, 22, 32 of the Braille printing data, respectively 42, 52, and controlling the curing device 11, 21, 31, 41, 51 to cure the printed image, the layers 12, 22, 32, 42, 52 are superimposed to form a Braille of the desired height.
  • the layers 12, 22, 32, 42, 52 printed by the printing modules 1, 2, 3, 4, 5 are superimposed on the same position on the print medium 6, and the layers 12, 22, 32, 42, 52 in the Braille print data.
  • the sizes of the dots constituting the Braille are inconsistent, and preferably, the size of the dots constituting the Braille in the layers printed by the printing modules 1, 2, 3, 4, 5 is sequentially decreased along the moving direction of the printing medium, that is, the image point 12> Figure 22>Picture 32>Picture 42>Picture 52, in addition, the dot size printed by each print module can be the same.
  • the height difference of the adjacent printing modules from the printing medium may also be set to be unequal.
  • the height of the printing module 1 from the printing medium 6 is Y
  • the height of the printing module 2 from the printing medium 6 is also Y
  • the printing module 3 The height of the printing medium 6 is Y+x
  • the height of the printing module 4 from the printing medium 6 is Y+2x
  • the height of the printing module 5 from the printing medium 6 is also Y+2x
  • the Braille circle corresponding to the Braille printing data is correspondingly
  • the invention adopts a plurality of printing modules to superimpose one inkjet printing to form a Braille of a required height, and the printing speed thereof is fast; as shown in FIG. 6, the prior art Braille inkjet printing method has an acceleration zone in each printing process. In the deceleration zone, the nozzles in the acceleration zone and the deceleration zone do not work. It is assumed that the time of the acceleration zone and the deceleration zone are both t, and the print time of the nozzle is T. Taking the five-pass printing to form the required Braille, the Braille inkjet in the prior art is used. The printing method takes 5 (T + 2t). Fig.
  • the Braille inkjet printing method of the present invention consumes T+2t. It can be seen that the Braille inkjet printing method of the present invention can greatly reduce the printing time and improve the Braille inkjet printing speed.
  • the dots constituting the Braille are sequentially reduced in each layer, and a plurality of successively reduced dots are superimposed to form a Braille of a desired height, and the surface of the Braille bump is a smooth curve, which makes the blind person feel comfortable to feel. .

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Abstract

公开了一种盲文喷墨打印装置及其打印方法。该装置包括至少两个打印模块（1，2，3，4，5），所述打印模块沿打印介质（6）运动方向并排排列，所述打印模块上设置至少一个喷头，所述喷头上设置多个喷孔；与打印模块数量一致的固化装置（11，21，31，41，51），沿打印介质运动方向，所述固化装置设置在打印模块的前方；一控制装置（7），所述控制装置用于控制打印模块上的喷头喷射墨滴于打印介质上形成所需盲文，并控制固化装置固化喷射到打印介质上的墨滴。该装置采用多个打印模块分别打印构成盲文打印数据的多个图层，并将各图层叠加于打印介质的同一位置上得到所需高度的盲文，从而打印速度快，而且各图层中构成盲文的圆点大小逐层减小，使打印的盲文表面较为光滑，提高了触摸舒适度。

Description

盲文喷墨打印装置及打印方法
本发明根据专利法第二十九条享有中国在先申请发明专利的优先权，申请号为201110144961.6，申请日为2011年5月31日，现将该专利的全部内容通过引用方式引入本发明中。
技术领域
本发明涉及一种盲文喷墨打印装置及打印方法，尤其涉及一种采用多个带压电喷头的打印模块一次喷墨叠加形成盲文的喷墨打印装置，以及采用该装置实现的高速、高耐磨性和摸读性的盲文喷墨打印方法。
背景技术
盲文是专为盲人设计的文字，布莱尔盲文是由1-6个三维凸出的圆点构成，盲人通过手指触摸凸点的个数和位置感知盲文的意思。盲文通常用在一些公共场所如电梯、包装以及盲文读物。由于盲文经常被触摸和挤压，这要求盲文的抗磨损能力较强。盲文国际标准规定其突出的高度必须保证不小于1mm，盲人才能在触摸时感知盲文的意思。现有技术主要通过雕刻或挤压的方法得到盲文，如塑料和亚克力板材料一般用三维雕刻机雕刻形成盲文；金属材料（如不锈钢板）一般通过冲压得出凸出圆点形成盲文；纸板（如书、包装箱）一般通过盲文打印机或印刷机用机械冲击和碾压等方法形成突起或凹陷的盲文点位，盲文的各种书籍和印刷制品一般在采用较高硬度和强度的120g厚牛皮纸作为承印材料。这种方法采用的牛皮纸需要上好的木浆原料制作，其造价成本高，在正反面印刷或打印时，需要特殊的排版工艺，且要求挤压在纸张上的压力均匀，采用这种方法形成的盲文在重压或者经过盲人长时间摸读后，其高度易消失，使得盲文书籍变得难以识别或不可用。总之，采用雕刻和挤压形成盲文凸点的方法生产效率低、劳动强度高、盲文制品成本高、且制作出的盲文书籍十分笨重。
随着科技的进步，出现一种通过压电喷头喷射墨滴到打印介质上并通过UV灯固化形成实体圆点。如图1和2所示，打印过程中打印小车做来回往返运动，打印介质单向运动，打印小车多次喷墨打印叠加形成所需高度的盲文，打印喷头每喷射一次墨水后，需要对打印小车的高度进行一次调整，然后通过UV灯固化后，打印喷头在原来的打印位置继续喷射墨水，直至形成所需高度的盲文。采用这种方法打印盲文其打印过程较复杂，每喷射一次墨水后都需要重新调整打印喷头的高度，打印速度较慢。
发明内容
针对现有技术存在的问题，本发明的目的在于提出一种打印速度快，盲文凸点轮廓规则、大小均匀一致，曲面圆滑，且具有较好的耐磨性和摸读性的盲文喷墨打印装置及打印方法。
为实现上述目的，本发明的盲文喷墨打印装置，包括至少两个打印模块、与打印模块数量一致的固化装置和控制装置，所述打印模块沿打印介质运动方向并排排列，每一打印模块打印一层数据，打印起始位置的打印模块距打印介质的高度最低，打印起始位置之后的打印模块距打印介质的高度逐级升高，并且下一级打印模块距上一级打印模块的升高距离与下一级打印模块打印的墨层厚度相同；每一固化装置设置在每一级打印模块的下游，用于对打印模块打印的墨层进行固化；所述控制装置用于控制打印模块上的喷头喷射墨滴于打印介质上形成所需盲文，并控制所述固化装置固化喷射到打印介质上的墨层。
进一步，在所述盲文喷墨打印装置的终端还设置有一终固化装置。
进一步，沿打印介质运动方向所述固化装置与所述打印模块之间的距离可调节。
进一步，每一级打印模块打印的墨层厚度可以相同或不同，相应的下一级打印模块距上一级打印模块的升高距离也可以相同或不同。
进一步，每一级打印模块打印的墨层形状为圆形，自打印起始位置的打印模块至最后一级打印模块所打印的圆形大小逐级递减。
进一步，每一级打印模块打印的墨层形状为圆形，且每一级打印模块打印的圆形大小相同。
进一步，所述每一打印模块距离打印介质的高度可调节。
进一步，每一级打印模块打印的图层叠加在打印介质上的同一位置处。
进一步，所述打印模块上设置至少一个打印喷头，所述打印喷头上设置多个喷孔。
进一步，所述固化装置为预固化装置，用于对打印模块喷出的墨滴进行预固化，以形成需要的墨滴形状。
进一步，所述预固化装置和终固化装置均为UV灯或远红外固化装置。
本发明的盲文喷墨打印方法，具体为：
1)根据单层墨水固化后的高度和所需的盲文高度确定需要打印墨水的层数；
2)将盲文打印数据设计成由与墨水层数一致个图层构成；
3)在盲文打印装置中设置与墨水层数相同个数的打印模块和固化装置；
4)控制各打印模块分别打印构成盲文打印数据的一个图层，并控制固化装置对已打印图像进行固化，多个图层叠加在一起形成所需高度的盲文。
进一步，每一级打印模块打印的墨层厚度可以相同或不同，相应的下一级打印模块距上一级打印模块的升高距离也可以相同或不同。
进一步，每一级打印模块打印的墨层形状为圆形，自打印起始位置的打印模块至最后一级打印模块所打印的圆形大小逐级递减。
进一步，每一级打印模块打印的墨层形状为圆形，且每一级打印模块打印的圆形大小相同。
进一步，每一级打印模块打印的图层叠加在打印介质上的同一位置处。
相对于现有技术，本发明具有如下优点：
1)采用多个打印模块一遍喷墨叠加形成盲文凸点，其打印速度快，非常适于在工业生产流水线上应用。
2)打印模块每打印一图层固化装置即刻将图像固化，防止运动过程中墨滴流动变形，保证盲文圆点轮廓规则，圆点大小均匀一致。
3)盲文凸点由多层逐级减小的圆点叠加形成，盲文凸点表面为一光滑曲线，使得盲文的可读性增加。
附图说明
图1为现有技术中盲文打印装置的结构示意图；
图2为图1的俯视图；
图3为本发明中盲文打印装置的结构示意图；
图4为图3的俯视图；
图5为本发明中盲文打印控制原理图；
图6为现有技术盲文打印速度的曲线图；
图7为本发明盲文打印速度曲线图。
具体实施方式
需要指出的是根据本发明的具体实施方式所作的任何变形，均不脱离本发明的精神以及权利要求记载的范围
下面结合附图详细说明本发明的技术方案。
如图3-4所示，本发明一个具体实施例中的盲文喷墨打印装置，包括五个打印模块1、2、3、4、5，在打印过程中打印模块1、2、3、4、5固定安装于支架上，打印介质6单向运动，打印模块1、2、3、4、5包括至少一个喷头，喷头喷射墨水到打印介质6上形成所需的盲文。本发明中的喷头为高分辨率喷头以实现one-pass打印，通常分辨率大于等于300DPI。沿打印介质运动方向，打印模块1、2、3、4、5之间的间距固定，沿竖直方向，打印模块1、2、3、4、5距离打印介质6的高度可以调节。喷头进行打印工作前，将打印模块1、2、3、4、5距离打印介质6的高度调成不等高，沿打印介质运动方向，打印模块1、2、3、4、5距离打印介质6的高度逐级增加，即进纸端的打印模块1距离打印介质6的高度最小，出纸端的打印模块5距离打印介质6的高度最大。假设喷头单遍打印在打印介质6上所形成的墨层的高度为x，打印模块1距离打印介质6的高度为Y，则打印模块2距离打印介质6的高度为Y+x，打印模块3距离打印介质6的高度为Y+2x，打印模块4距离打印介质6的高度为Y+3x，打印模块5距离打印介质6的高度为Y+4x。本发明的盲文喷墨打印装置中打印模块的数量由需要的盲文的高度和单层墨层的高度决定，如需要盲文的高度为3x，单层墨层的高度为x，则盲文打印装置中需要打印模块的数量为3个，若需要盲文的高度为7x，则盲文打印装置中需要打印模块的数量为7个，以此类推。
本发明一个具体实施例中的盲文喷墨打印装置，还包括与打印模块数量一致的固化装置，沿打印介质运动方向，固化装置11、21、31、41、51间隔设置在打印模块1、2、3、4、5的下游，根据实际选择的打印墨水，固化装置可以选择UV固化装置或者远红外固化装置。在打印过程中，打印模块1喷出的盲文图层12经固化装置11预固化后，打印模块2喷出的盲文图层22叠加在已固化的盲文图层12上，以此类推，直至打印模块1、2、3、4、5都喷射一层盲文图层，所有盲文图层12、22、32、42、52叠加即得到需要高度的盲文，在喷墨打印装置的出口端还设置有一终固化装置61，最终对打印好的盲文进行固化，终固化装置61可以选择UV固化装置或者远红外固化装置，其中终固化装置61的固化强度大于固化装置11、21、31、41、51的强度。由于在打印过程中，打印模块喷射一次墨水，其旁设置的固化装置即刻对刚喷出的墨滴进行预固化，因此能有效的防止墨水流散，保证墨滴的形状规则，且大小均匀一致。且在打印出口端设置一终固化装置以保证打印的盲文完全固化，防止由于墨滴为完全固化在收纸的过程中损坏打印图像。本发明中的固化装置与打印模块沿打印介质运动方向的距离为可调节的，以保证使用不同墨水和打印介质时，墨滴的形状规则和大小均匀性。
如图5所示，本发明一个具体实施例中的盲文喷墨打印装置中，还包括一控制装置7，控制装置7控制数据分配装置8将盲文打印数据分发给打印模块1、2、3、4、5，同时控制装置7还控制固化装置11、21、31、41、51对已打印的图像进行固化。
本发明的盲文喷墨打印方法具体步骤包括：根据单层墨水固化后的高度和所需的盲文高度确定需要打印墨水的层数，本实施例中以打印墨水的层数以五层为例；根据需要打印墨水的层数将盲文打印数据设计成由与墨水层数一致的图层构成，本实施例中盲文打印数据由五个图层构成；盲文打印装置中设置与墨水层数数量一致的打印模块和固化装置，本实例中打印模块和固化装置的数量均为五个；控制装置控制打印模块1、2、3、4、5分别打印盲文打印数据的图层12、22、32、42、52，并控制固化装置11、21、31、41、51对已打印图像进行固化，图层12、22、32、42、52叠加在一起形成所需高度的盲文。
打印模块1、2、3、4、5打印的图层12、22、32、42、52叠加在打印介质上6的同一位置处，盲文打印数据中图层12、22、32、42、52中构成盲文的圆点的大小不一致，其中优选沿打印介质运动方向，打印模块1、2、3、4、5打印的图层中构成盲文的圆点的大小依次减小，即图点12>图点22>图点32>图点42>图点52，此外每一打印模块打印的圆点大小也可以相同。
本发明中相邻打印模块距离打印介质的高度差也可以设置成不等的，如打印模块1距离打印介质6的高度为Y，则打印模块2距离打印介质6的高度也为Y，打印模块3距离打印介质6的高度为Y+x，打印模块4距离打印介质6的高度为Y+2x，打印模块5距离打印介质6的高度也为Y+2x，则相应对盲文打印数据中盲文圆点的大小做相应的修改，即图点12=图点22>图点32>图点42=图点52。
本发明采用多个打印模块一次喷墨打印叠加形成所需高度的盲文，其打印速度快；如图6所示，现有技术的盲文喷墨打印方法的每一遍打印过程中都存在加速区和减速区，在加速区和减速区喷头不工作，假设加速区和减速区的时间均为t，喷头打印时间为T，以五遍打印形成所需盲文为例，则现有技术中盲文喷墨打印方法所消耗的时间为5（T+2t）。图7为采用本发明的盲文喷墨打印方法的速度曲线图，本发明的盲文喷墨打印方法所消耗的时间为T+2t。可见采用本发明的盲文喷墨打印方法可以大大缩减打印时间，提高盲文喷墨打印速度。
本发明中的构成盲文的圆点在各图层中依次减小，多个依次减小的圆点叠加形成所需高度的盲文，盲文凸点表面为一光滑曲线，使盲人摸起来舒适感增加。
以上描述仅是本发明的一个具体实施例，在本发明构思的基础上对本发明做出的任何实施形式上的改变，均在本发明的保护范围内。

Claims (13)

  1. 盲文喷墨打印装置，其特征在于，包括至少两个打印模块、与打印模块数量一致的固化装置和控制装置，所述打印模块沿打印介质运动方向并排排列，每一打印模块打印一层数据，打印起始位置的打印模块距打印介质的高度最低，打印起始位置之后的打印模块距打印介质的高度逐级升高，并且下一级打印模块距上一级打印模块的升高距离与下一级打印模块打印的墨层厚度相同；每一固化装置设置在每一级打印模块的下游，用于对打印模块打印的墨层进行固化；所述控制装置用于控制打印模块上的喷头喷射墨滴于打印介质上形成所需盲文，并控制所述固化装置固化喷射到打印介质上的墨层。
  2. 如权利要求1所述的盲文喷墨打印装置，其特征在于，在所述盲文喷墨打印装置的终端还设置有一终固化装置。
  3. 如权利要求1所述的盲文喷墨打印装置，其特征在于，沿打印介质运动方向所述固化装置与所述打印模块之间的距离可调节 。
  4. 如权利要求1所述的盲文喷墨打印装置，其特征在于，每一级打印模块打印的墨层厚度可以相同或不同，相应的下一级打印模块距上一级打印模块的升高距离也可以相同或不同。
  5. 如权利要求4所述的盲文喷墨打印装置，其特征在于，每一级打印模块打印的墨层形状为圆形，自打印起始位置的打印模块至最后一级打印模块所打印的圆形大小逐级递减。
  6. 如权利要求4所述的盲文喷墨打印装置，其特征在于，每一级打印模块打印的墨层形状为圆形，且每一级打印模块打印的圆形大小相同
  7. 如权利要求1所述的盲文喷墨打印装置，其特征在于，每一级打印模块距离打印介质的高度可调节 。
  8. 如权利要求1所述的盲文喷墨打印装置，其特征在于，每一级打印模块打印的图层叠加在打印介质上的同一位置处 。
  9. 如权利要求1所述的盲文喷墨打印装置，其特征在于，所述固化装置为预固化装置 。
  10. 如权利要求9所述的盲文喷墨打印装置，其特征在于，所述预固化装置和终固化装置均为UV灯或远红外固化装置
  11. 盲文喷墨打印方法，具体为：
    1)根据单层墨水固化后的高度和所需的盲文高度确定需要打印墨水的层数；
    2)将盲文打印数据设计成由与墨水层数一致个图层构成；
    3)在盲文打印装置中设置与墨水层数相同个数的打印模块和固化装置；
    4)控制各打印模块分别打印构成盲文打印数据的一个图层，并控制固化装置对已打印图像进行固化，多个图层叠加在一起形成所需高度的盲文。
  12. 如权利要求11所述的盲文喷墨打印方法，其特征在于，每一级打印模块打印的墨层厚度可以相同或不同，相应的下一级打印模块距上一级打印模块的升高距离也可以相同或不同。
  13. 如权利要求12所述的盲文喷墨打印方法，其特征在于，每一级打印模块打印的墨层形状为圆形，自打印起始位置的打印模块至最后一级打印模块所打印的圆形大小逐级递减或者每一级打印模块打印的圆形大小相同。
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