CN1754694A - Platemaking method and platemaking apparatus - Google Patents

Platemaking method and platemaking apparatus Download PDF

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Publication number
CN1754694A
CN1754694A CN 200510107676 CN200510107676A CN1754694A CN 1754694 A CN1754694 A CN 1754694A CN 200510107676 CN200510107676 CN 200510107676 CN 200510107676 A CN200510107676 A CN 200510107676A CN 1754694 A CN1754694 A CN 1754694A
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engraving
beam
depth
recording material
printing plate
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CN 200510107676
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CN1754694B (en )
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小川秀明
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大日本网目版制造株式会社
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Abstract

本发明提供一种印刷版的制版方法以及印刷版的制版装置,通过精密雕刻工序和粗雕刻工序这两个工序执行雕刻,该精密雕刻工序是使用具有小的束径的精密雕刻光束,以精密雕刻像素间距照射柔性感光材料,进行雕刻直到精密雕刻光束所能达到的最大深度,该粗雕刻工序是使用具有大的束径的粗雕刻光束,以比精密雕刻像素间距大的粗雕刻像素间距照射柔性感光材料,进行雕刻直到浮凸深度。 The present invention provides a method of printing plate and printing plate means by precision engraving process and coarse engraving process performed engraving step two, the precision engraving process is a beam having a small diameter of the precision engraving beam, to precision engraving pixel pitch flexible irradiating a photosensitive material, until the maximum depth of the engraving precision engraving beam can be achieved, the step is a coarse engraving beam having a large diameter of the coarse engraving beam irradiation than the precision engraving pixel pitch larger coarse engraving pixel pitch a flexible photosensitive material, until the emboss engraving depth.

Description

印刷版的制版方法以及印刷版的制版装置 Printing plate of the apparatus and the printing plate

技术领域 FIELD

本发明涉及一种对例如柔性版等的凸版印刷版、凹版等的凹版印刷版等印刷版进行制版的印刷版的制版方法以及印刷版的制版装置。 The present invention relates to a flexographic e.g. like a relief printing plate, a gravure printing plate and the like such as gravure printing plate printing plate and the plate of the printing plate of the apparatus.

背景技术 Background technique

目前,作为这样的印刷版的制版装置,公知有例如美国专利第5327167号说明书中记载的激光雕刻机。 Conventionally, as such a printing plate apparatus, laser engraving machine is known, for example, U.S. Pat. No. 5,327,167 described in the specification. 该激光雕刻机通过利用从激光光源射出的激光束扫描记录材料,从而对记录材料的表面进行雕刻而制造凸版印刷版,具有:激光光源;用来调制从该激光光源射出的激光束的调制器(modulator);在其外周部安装有记录材料而进行旋转的记录鼓;以能够沿着与该记录鼓的轴心平行的方向移动的形式构成的、对安装在记录鼓的外周部的记录材料照射从激光光源射出的激光束的记录光头。 The laser engraving machine by scanning the recording material with a laser beam emitted from the laser light source, so that the surface of the recording material for producing relief printing plate engraving, comprising: a laser light source; a modulator for modulating a laser beam emitted from the laser light source is (Modulator); to be movable in a direction parallel to the axis of the recording drum in the form of configuration, the recording material attached to the outer circumferential portion of the recording drum; rotating the drum in the recording portion of the outer periphery of the recording material mounted from the recording head irradiating the laser light source emits a laser beam.

在这种凸版印刷版的制版装置中,基于激光光源的功率和记录材料的感度,激光束的扫描速度、即记录鼓的旋转速度被设定为能够得到的所需最大雕刻深度的值。 In such a relief printing plate device based on the power and sensitivity of the recording material of the laser light source, the rotational speed of the scanning speed of the laser beam, i.e., the recording drum is set to a desired value of the maximum depth of engraving can be obtained. 而比最大雕刻深度浅的雕刻部分,以使照射记录材料的激光束的功率降低的状态进行雕刻。 The engraving depth shallower than the maximum engraving, so that a reduced power state of irradiating a laser beam to engrave the recording material.

这时,由于在激光束进行的记录材料的雕刻中,需要比较大的功率,所以存在印刷版的制版需要较长的时间的问题。 In this case, since the recording material is engraved in the laser beam, a relatively large power, there is a printing plate takes a long time problem.

发明内容 SUMMARY

本发明的目的是提供一种能够通过有效使用激光束来缩短制版时间的印刷版的制版方法以及印刷版的制版装置。 Object of the present invention is to provide an effective by using a laser beam to shorten the time of printing plate platemaking method, and printing plate means.

上述发明的目的,是由下述方法实现的,即,一种印刷版的制版方法,通过利用从激光光源射出的、对应于图像信号而被调制的激光束扫描记录材料,从而对记录材料的表面进行雕刻而制造印刷版,其特征在于,包括:第一雕刻工序,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度;第二雕刻工序,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 The above-described object of the invention is achieved by a method, i.e. a printing plate platemaking method, by using a light emitted from the laser light source, laser beam scanning the recording material corresponding to the image signal to be modulated, so that the recording material engraving the surface of a printing plate is produced, which is characterized in that, comprising: a first engraving step using a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until the first engraving depth; a second engraving step, a bundle of a laser beam having a diameter larger than the diameter of the second beam, at a pitch larger than that of the first pixels of the second pixel pitch irradiating the recording material, until a second engraving depth deeper than the first depth.

根据这样的制版方法,通过有效使用激光束而能够缩短制版时间。 According to this plate making method, through effective use of a laser beam plate-making time can be shortened.

而且,也可以代替使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度,反之使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,使用具有比上述第一束径小的第二束径的激光束,以比上述第一像素间距小的第二像素间距照射记录材料,进行雕刻直到比上述第一深度浅的第二深度。 Further, instead of using a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until after the first engraving depth, a laser beam having a diameter larger than the first bundle of the second beam path, at a pitch larger than said first pixel pitch of pixels of the second recording material is irradiated, the second laser beam until the engraving depth deeper than the first depth, whereas using a first beam path at a first pixel pitch irradiating the recording material , until after the first engraving depth, a laser beam having a first beam diameter smaller than the beam diameter of the above-described second to the first pixel pitch smaller than the pixel pitch of the second irradiating a recording material, the first carried out until the specific engraving a second depth shallower.

在一个较佳的实施形式中,在使用小的束径的激光束的雕刻工序中,由调制器调制激光束,在使用大的束径的激光束的雕刻工序中,使激光光源脉冲振荡。 In a preferred form of embodiment, the small-diameter beam engraving step of laser beam, a laser beam modulated by the modulator, the beam diameter large engraving step of laser beam, a pulsed laser light source.

在另一个较佳的实施形式中,在使用小的束径的激光束的雕刻工序中,使激光光源连续振荡或者模拟连续振荡,在使用大的束径的激光束的雕刻工序中,用上述激光光源自身来调制激光束。 In another preferred form of embodiment, the small-diameter beam engraving step of laser beam, the laser light source or a continuous wave continuous wave simulation, using a large beam diameter of laser beam engraving step, with the above The laser light source is modulated laser beam itself.

另外,在另一个较佳的实施形式中,在使用大的束径的激光束的雕刻工序中,将上述记录材料预备加到比使用小的束径的激光束的雕刻工序高的温度。 Further, in another preferred form of embodiment, the large-diameter beam engraving step of laser beam, the recording material is preliminary added to the higher temperature than the engraving step using a small beam diameter of the laser beam.

从本发明的其他观点出发,本发明是一种印刷版的制版装置,通过利用从激光光源射出的激光束对记录材料进行扫描,从而对记录材料的表面进行雕刻而制造印刷版,其特征在于,包括:调制器,其用于调制从上述激光光源射出的激光束;记录鼓,在其外周部安装有记录材料;旋转电机,其使上述记录鼓旋转;记录光头,其以能够沿着与上述记录鼓的轴心平行的方向移动的形式构成,对安装在上述记录鼓的外周部上的记录材料照射从上述激光光源射出的激光束;移动电机,其用于使上述记录光头沿着与上述记录鼓的轴心平行的方向移动;束径变更机构,其改变从上述记录光头射出的激光束的束径;控制部,其通过控制上述调制器、上述旋转电机、上述移动电机以及上述束径变更机构,使用具有第一束径的激光束,以第一像素间距照射记录材料,进 From another aspect of the present invention, the present invention is a printing plate apparatus, by using the laser beam emitted from the laser light source scans the recording material, thereby to engrave the surface of the recording material produced printing plate, wherein comprising: a modulator for modulating the laser beam emitted from the laser light source; recording drum, is mounted in the outer circumferential portion of the recording material; rotating electric machine rotating said recording drum; a recording head, which is movable along with a direction parallel to the axis of the recording drum in the form of a mobile structure, irradiating the recording material mounted on the outer circumferential portion of the recording drum from the laser beam emitted from the laser light source; moving motor for moving the recording head along with a direction parallel to the axis of the recording drum movement; beam diameter changing mechanism which changes a beam diameter of light emitted from the optical head of the recording laser beam; a control unit, by controlling the modulator, the rotary electric machine, said moving motor and said beam diameter changing mechanism, a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, into the 雕刻直到第一深度之后,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 Until after the first engraving depth, a bundle having a diameter larger than the diameter of the laser beam of the second beam, the first pixel pitch is larger than a second pixel pitch irradiating the recording material, the above ratio until a first engraving depth the second deep depth.

从本发明的其他观点出发,本发明还具有对安装在上述记录鼓上的记录材料进行加热的加热机构,上述控制部,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,在由上述加热机构预备加热了记录材料的状态下,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 From another aspect of the present invention, the viewpoint of the present invention further comprises means for heating the recording material mounted on the recording drum heats, and the control unit, having a first beam diameter of the laser beam at a first pixel pitch irradiating the recording material , until after the first engraving depth, at the preliminary heating means by the recording material and heated, a bundle having a diameter larger than the diameter of the laser beam of the second beam, the first pixel pitch larger than second pixel pitch irradiating the recording material, until a second engraving depth deeper than the first depth.

附图说明 BRIEF DESCRIPTION

图1是表示激光雕刻机的概要的方框图。 FIG. 1 is a block diagram showing an outline of a laser engraving machine.

图2是表示记录光头和记录鼓的示意图。 FIG 2 is a diagram showing a recording drum and a recording head.

图3是表示AOM(acoustooptical modulator:声光调制器)单元的示意图。 FIG 3 is a diagram AOM: schematic units (acoustooptical modulator acousto-optic modulator).

图4是示意性表示柔性感光材料表面的形状的说明图。 FIG 4 is a schematic explanatory view showing a shape of a flexible surface of the photosensitive material.

图5是表示浮凸形状的说明图。 FIG 5 is an explanatory view showing the shape of the relief.

图6是表示制版工序的流程图。 FIG 6 is a flowchart of plate-making process.

图7是表示制版工序流程图。 FIG 7 is a flowchart of plate-making process.

图8是表示雕刻感度Y和由激光束加工的凹部的S/V比之间的关系的图。 FIG 8 is a diagram showing the relationship between the engraving sensitivity Y and S recess by the laser beam machining / V ratio.

图9是示意性表示浮凸数据的作成方法的说明图。 9 is a schematic explanatory view showing a method of creating relief data.

图10是表示基于现有的雕刻方法的雕刻状态的示意图。 FIG 10 is a schematic view showing a state based on a conventional engraving method of engraving.

图11是表示基于本发明的雕刻方法的雕刻状态的示意图。 FIG 11 is a schematic view showing a state based on the engraving of the engraving method of the present invention.

图12是表示基于本发明的雕刻方法的雕刻状态的示意图。 FIG 12 is a schematic view showing a state based on the engraving of the engraving method of the present invention.

图13是示意性表示凹版印刷版的形状的说明图。 FIG 13 is a schematic explanatory view showing a shape of intaglio printing.

图14是表示精密雕刻工序的记录光束等的说明图。 FIG 14 is an explanatory view of a recording beam precision engraving process and the like.

图15是表示第一实施形式的粗雕刻工序的记录光束的说明图。 FIG 15 is a diagram illustrating a first embodiment of the recording beam in the form of coarse engraving step.

图16是表示第二实施形式的粗雕刻工序的记录光束的说明图。 FIG 16 is a diagram illustrating a second embodiment of the recording beam in the form of coarse engraving step.

图17是表示第三实施形式的粗雕刻工序的记录光束的说明图。 FIG 17 is a diagram illustrating a third embodiment of the recording beam in the form of coarse engraving step.

图18是示意性表示柔性感光材料表面的形状的说明图。 FIG 18 is a schematic explanatory view showing a shape of a flexible surface of the photosensitive material.

具体实施方式 detailed description

下面基于附图对本发明的实施形式进行说明。 Next, embodiments of the present invention will be described based on the drawings.

在以下的说明中,首先,针对通过使用精密雕刻光束L1并以精密雕刻像素间距pp照射柔性感光材料10而进行雕刻直到最大深度dp的精密雕刻工序、和使用粗光束L2并以粗雕刻像素间距pc照射柔性感光材料10而进行雕刻直到浮凸深度d的粗雕刻工序这两个工序而执行雕刻,从而缩短制版时间的本发明的第一特征进行说明,接着,针对通过有效使用激光束而在保持高的制版精度的状态下缩短制版时间的本发明的第二个特征进行说明。 In the following description, first, for by using a precision engraving beam L1 and is precision engraving pixel pitch pp irradiating a flexible photosensitive material 10 to perform engraving up to the maximum depth dp of the precision engraving process and crude light beam L2 and coarse engraving pixel pitch pc irradiating the photosensitive material 10 and flexible feature of the present invention a first engraving the relief depth d until coarse engraving step two engraving step is performed, thereby shortening the platemaking time is described, and then, by making effective use for the laser beam shortening the platemaking time while maintaining a high precision plate making a second feature of the present invention will be described.

图1是表示作为本发明的凸版印刷版的制版装置的激光雕刻机的概要的方框图。 FIG. 1 is a block diagram a laser engraving machine, a relief printing plate of the device according to the present invention outline.

该激光雕刻机具有:记录鼓11,其外周部安装有作为凸版印刷版用的记录材料的柔性直接感光材料(以下称为“柔性感光材料”)10;记录光头12,其以能够沿着与该记录鼓11的轴心平行的方向移动的形式而构成;个人电脑13,其作为输入输出部及显示部;由气体激光器构成的激光光源14;控制装置整体的控制部15。 The laser engraving machine having: a recording drum 11, the outer peripheral portion is directly attached to a flexible photosensitive material as a recording material used for a relief printing plate (hereinafter referred to as "flexible light-sensitive material") 10; recording head 12, which is movable along with the direction of the axis of the recording drum 11 in the form of parallel movement constituted; personal computer 13, as an input-output unit and a display unit; a laser light source 14 composed of a gas laser; means 15 controls the entire control unit.

记录鼓11与旋转电机21连接,以轴22为中心进行旋转。 The recording drum 11 and the rotary electric machine 21 is connected to the rotation shaft 22 as the center. 该旋转电机21和电机驱动器23连接。 The rotary electric machine 21 and a motor driver 23 is connected. 该电机驱动器23,从控制部15接受旋转速度指令,来控制旋转电机21的旋转。 The motor driver 23, the rotation control unit 15 receives the rotational speed command, to control the rotary electric machine 21. 旋转电机21的旋转速度以及通过旋转电机21而进行旋转的记录鼓11的旋转角度位置,由编码器24测定,并把该信息发送给控制部15。 The rotational speed of the rotary electric machine 21 and the motor 21 is performed by the rotation of the rotating recording drum rotational angle position of 11, measured by the encoder 24, and transmits the information to the control unit 15.

记录光头12通过由未图示的引导装置进行引导,可以沿着与记录鼓11的轴心平行的方向移动。 By recording the optical head 12 is guided by guide means (not shown) may be moved in a direction parallel to the axis of the recording drum 11. 而且,该记录光头12被设置为与记录鼓11的轴心相平行,受到通过移动电机31而旋转的滚珠丝杠32的驱动,在与记录鼓11的轴心平行的方向上往复移动。 Further, the recording head 12 is set to be parallel to the axis of the recording drum 11, driven by a moving motor 31 to rotate the ball screw 32 to reciprocate in a direction parallel to the axis of the recording drum 11. 该移动电机31与电机驱动器33连接。 The movement motor 31 and the motor driver 33 is connected. 该电机驱动器33从控制部15接受旋转速度指令,控制移动电机31的旋转。 The rotary motor driver 33 control unit 15 receives the rotational speed command, the motor 31 controls the movement. 移动电机31的旋转速度以及通过移动电机31而移动的记录光头12的位置,由编码器34测定,并把该信息发送给控制部15。 The rotational speed of the motor 31 and movement motor 31 is moved by moving the recording position of the optical head 12, measured by the encoder 34, and transmits the information to the control unit 15.

图2是表示记录光头12和记录鼓11的示意图。 FIG 2 is a diagram showing the recording head 12 and the recording drum 11.

在该记录光头12内,设置有物镜46和预备加热机构71。 In the recording head 12, the objective lens 46 and is provided with a pre-heating means 71. 该预备加热机构71用于将安装在记录鼓11的外周部的柔性感光材料10预备加热。 The preheating means 71 for preheating the recording 10 mounted on an outer periphery of the drum portion 11 of the flexible photosensitive material. 该预备加热机构71,例如是由向安装在记录鼓11的外周部上的柔性感光材料10喷射热风的热风喷出装置、或向安装在记录鼓11的外周部上的记录材料10照射红外线的卤素灯、或者诱导加热装置构成的。 The preheating means 71, for example, by the injector 10 of the flexible photosensitive material mounted on the outer circumferential portion of the recording drum 11 hot air hot air discharging means, or irradiating the recording material mounted on the outer circumferential portion of the recording drum 11 of 10 infrared halogen, or induction heating means thereof.

再参照图1,在激光光源14的后段,配备了在其内部内置有AOM(声光调制器)72(参照图3)的AOM单元41。 Referring again to FIG 1, the rear section of the laser light source 14, equipped with a built-in inside AOM (acoustic optical modulator) 72 (see FIG. 3) of the unit 41 AOM. 该AOM单元41,通过AOM驱动器42以及切换电路65,从控制部15接受图像信号。 The AOM unit 41, by the AOM driver 42 and a switching circuit 65, receiving the image signal from the control unit 15. 从激光光源14射出的激光束,在AOM单元41被调制后,通过可变式光束扩展器51、固定在装置上的一对反光镜43、44、固定在记录光头12上的反光镜45以及物镜46,对安装在记录鼓11的外周部上的柔性感光材料10上。 The laser beam emitted from the laser light source 14, after the AOM unit 41 is modulated by the variable beam expander 51, fixed to the apparatus a pair of mirrors 43, 44, the mirror is fixed on the recording head 1245 and an objective lens 46, the flexible photosensitive material mounted on the outer peripheral portion 10 of the recording drum 11.

AOM单元41,通过电机61的驱动,可以在可调制激光束的调制位置和退避位置之间移动。 AOM unit 41, by driving the motor 61, may be moved between the modulated laser beam may be modulated position and a retracted position. 该电机61通过电机驱动器62与控制部15连接。 The motor 61 is connected via a motor driver 62 and control unit 15.

图3是表示AOM单元41的示意图。 FIG 3 is a schematic diagram showing AOM unit 41.

该AOM单元41,在其内部配置有AOM72和平行平面板73。 The AOM unit 41 is disposed inside and a plane parallel plate 73 AOM72. 该AOM单元41在不通过AOM72进行激光束的调制时,配置在图3中实线所示的退避位置。 When the unit 41 is not performed AOM modulated laser beam through AOM72, disposed in the retracted position shown in solid lines in FIG. 当需要通过AOM72进行调制时,通过电机61的驱动,AOM72移动到被配置在图3中假想线所示的位置的调制位置。 When needed modulated by AOM72, by driving the motor 61, AOM72 is arranged to move the modulated position shown in phantom line in FIG. 3. 该调制位置是AOM72被配置于激光束的光路中的位置。 The position of the optical path modulation AOM72 laser beam is arranged in position.

而且,平行平面板73在AOM单元41被配置于退避位置时,被配置于激光束的光路中。 Further, when the parallel plate 73 AOM unit 41 is disposed at the retracted position, it is disposed in the optical path of the laser beam. 该平行平面板73用于在AOM单元41被配置于退避位置时,使激光束产生与在激光束通过AOM72时产生的激光束光路的偏移相同的偏移。 The parallel plate 73 is used when the AOM unit 41 is disposed at the retracted position, so that the same laser beam path and the offset laser beam generated by the laser beam AOM72 offset.

再参照图1,可变式光束扩展器51,用于通过改变从激光光源14射出的激光束的束径,从而改变照射在柔性感光材料10上的激光束的束径。 Referring again to 1, the variable beam expander 51 diagram for the beam diameter of the beam emitted from the laser light source 14 by changing, thereby changing the beam diameter is irradiated on the photosensitive material 10 is a flexible laser beam. 该可变式光束扩展器51具有:构成光束扩展器的3对透镜52、53、54;支承这些透镜对52、53、54的支承构件55;用于通过使支承构件55移动,从而使透镜对52、53、54中的任意的透镜对配置于与AOM单元41的射出端相对向的位置的具有电机等的移动机构56。 The variable beam expander 51 has: three pairs of lenses constituting the beam expander 52, 53; supporting member for supporting the lenses 52, 53, 55; 55 for movement by the support member, so that the lens for any of the lens 52, 53, 56 in the exit end disposed at a position opposite to the AOM unit 41 having a moving mechanism such as a motor. 该移动机构56与电机驱动器57连接。 The moving mechanism 56 and the motor driver 57 is connected. 该电机驱动器57从控制部15接受指令,使透镜对52、53、54中最适于雕刻的透镜对配置于与AOM单元41的射出端相对向的位置。 The motor driver 57 receiving the instruction from the control unit 15, a lens 52, 53 of the lens most suitable for engraving exit end disposed at a position opposite to the AOM unit 41 is.

激光光源14,通过驱动器63以及激光光源控制部64与控制部15相连接。 A laser light source 14, is connected through a driver 63 and a laser light source control unit 64 and the control unit 15. 激光光源控制部64从控制部15接受后述的连续振荡或脉冲振荡的指示信号。 A signal indicative of the laser light source control unit 64 of continuous oscillation or pulse oscillation described later from the control section 15 accepts. 另外,激光光源控制部64通过切换电路65从控制部15接受图像信号。 Further, the laser light source control unit 6465 accepts an image signal from the control unit 15 through the switching circuit. 并且,切换电路65从控制部15接受把图像信号发送给激光光源控制部64、或者是发送给上述AOM驱动器42的切换信号。 Further, the signal switching circuit 65 switching control unit 15 receives the image signal is transmitted to the laser light source control unit 64, or transmitted to the driver from the AOM 42.

在该激光雕刻机中,从激光光源14射出的激光束,在AOM单元41的AOM72被调制,通过可变式光束扩展器51而改变束径后,通过反光镜43、44、45以及物镜46而从记录光头12射出。 After the laser engraving machine, laser beam emitted from the laser light source 14 in the modulated AOM AOM72 unit 41, the beam diameter is changed by the variable beam expander 51, 43,44, 45 and by the mirror objective 46 12 is emitted from the recording head. 并且,在其外周部安装有柔性感光材料10的记录鼓11处于旋转的状态下,通过使记录光头12沿着与记录鼓11的轴心平行的方向移动,从而激光束对柔性感光材料10进行扫描,进行雕刻,在柔性感光材料10上形成浮凸。 Also, in the outer periphery of the flexible portion is attached to the recording drum 11 of the photosensitive material 10 in a state rotated by the recording optical head 12 is moved in a direction parallel to the axis of the recording drum 11, so that the laser beam on the photosensitive material 10 is a flexible scan, engraving, a relief formed on the photosensitive material 10 is flexible. 但如后述那样,在不使用AOM72的情况下,激光束可由激光光源14自身调制。 However, as described later, without the use AOM72, the laser beam may be modulated laser source 14 itself.

这时,在该激光雕刻机中,通过使用具有小的束径的精密雕刻光束L1并以精密雕刻像素间距pp照射柔性感光材料10而进行雕刻直到精密雕刻光束L1所能达到的最大深度dp的精密雕刻工序、和使用具有大的束径的粗光束L2并以比精密雕刻像素间距pp大的粗雕刻像素间距pc(与网点间距相等)照射柔性感光材料10而进行雕刻直到浮凸深度d的粗雕刻工序这两个工序执行雕刻,从而缩短了制版时间。 In this case, the laser engraving machine, and engraving until the maximum depth dp precision engraving beam L1 can be achieved by using a precision engraving beam L1 having a small beam diameter and the precision engraving pixel pitch pp to irradiate the photosensitive material 10 is a flexible the crude light beam L2 precision engraving process, and having a large beam diameter and at pp larger than the precision engraving pixel pitch coarse engraving pixel pitch pc (equal to the dot pitch) irradiating a flexible photosensitive material 10 and the engraving until the relief depth d the crude engraving step performs two engraving step, thereby shortening the platemaking time.

图4是示意性表示使用该激光雕刻机进行雕刻之后的柔性感光材料10表面的形状的说明图。 FIG 4 is a schematic showing the use of laser engraving machine will be described illustrating the shape of a flexible surface of the photosensitive material 10 after the engraving. 另外,图4中(a)是在柔性感光材料10上形成在主扫描方向上的7个浮凸的平面图,图4中(b)是其截面图。 Further, in FIG. 4 (a) is formed in the main scanning direction of the photosensitive material 10 on the flexible plan view of seven reliefs, FIG. 4 (b) is a sectional view thereof. 还有,在该图中,为了方便说明,示出了从图的左侧开始形成网点面积率分别是0%、1%、1%、2%、2%、0%、0%的7个浮凸的情况。 Further, in the drawing, for convenience of illustration, the left side of FIG began to form from the dot area rate is 0%, 1%, 1%, 2%, 2%, 0%, 0% 7 floating situation convex.

如该图所示,在精密雕刻工序中,使用具有小的束径的精密雕刻光束L1。 As shown in the figure, the precision engraving process, using a precision engraving beam L1 having a small beam diameter. 而且,将该精密雕刻光束L1以精密雕刻像素间距pp照射在柔性感光材料10上,对柔性感光材料10从其表面开始直到最大深度dp进行雕刻。 Further, the precision engraving beam L1 to precision engraving pixel pitch pp is irradiated on the photosensitive material 10 is flexible, the flexible photosensitive material 10 up to a maximum depth dp from the surface of the engraving starts.

该最大深度dp,在非常小的网点面积率的浮凸彼此相邻时,使这些浮凸的边界部分的雕刻深度一致。 The maximum depth DP, embossed adjacent to each other when a very small dot area, these embossments consistent engraving depth of the boundary portion. 该最大深度dp比此小时,不能很好的表现微小的网点。 The maximum depth dp than this hour, not a good performance of small outlets. 该最大深度dp比其大也是可能的,但在这种情况下,雕刻效率恶化。 The maximum depth dp big also possible, but in this case, carving worse than its efficiency. 在该实施形式中,将网点面积率为1%的浮凸彼此相邻时的、这些浮凸的边界部分的雕刻深度设定为最大深度dp。 In this embodiment, the dot area rate of 1% when embossed adjacent to each other, the engraving depth is set boundaries of these portions in relief for the maximum depth dp.

在该精密雕刻工序中,执行从柔性感光材料10的表面到最大深度dp的、对网点的形状有直接影响的部分的雕刻。 In the precision engraving step, performed from the photosensitive surface of the flexible material 10 to the maximum depth dp has a direct impact on the shape of the dot of the engraving. 因此,作为这时的雕刻像素间距,采用比较小的精密雕刻像素间距pp,像图4中(c)示意性表示的那样,执行微小单位下的雕刻。 Therefore, engraving pixel pitch at this time, using relatively small precision engraving pixel pitch pp, as as in FIG. 4 (c) schematically showing performs engraving at the sub-unit. 这时的精密雕刻光束L1的束径,采用能够进行精密雕刻像素间距pp下的雕刻的小的束径。 The precision engraving beam L1 at this time of the beam diameter, a small beam diameter can be precision engraving pixel pitch pp to engrave the next.

在精密雕刻工序后,进行粗雕刻工序。 After the precision engraving step, coarse engraving step. 在该粗雕刻工序中,使用具有大的束径的粗雕刻光束L2。 In this step the coarse engraving, the engraving crude having a large beam diameter of the light beam L2. 并且,将该粗雕刻光束L2以粗雕刻像素间距pc而照射在柔性感光材料10上,对柔性感光材料10从上述最大深度dp到浮凸深度d为止进行雕刻。 Then, the light beam L2 coarse engraving pixel pitch pc to engrave the crude irradiated on the photosensitive material 10 is flexible, the flexible DP from the photosensitive material 10 until the maximum depth emboss engraving depth d. 这样,因为在精密雕刻工序中被雕刻的区域由粗雕刻工序再次雕刻,所以从执行粗雕刻工序后的柔性感光材料10表面开始的雕刻深度d,比精密雕刻的雕刻深度dp大。 Thus, since the precision engraving process by a thick engraved area engraved engraving step again, so that the engraving depth d from the start of the flexible surface of the photosensitive material 10 after the step of performing coarse engraving, is larger than the precision engraving DP engraving depth. 在该粗雕刻工序中,由于执行了对网点形状不直接影响的部分的雕刻,所以可以增大粗雕刻像素间距pc。 In this step the coarse engraving, the engraving is performed since no direct influence on the shape of the dot, it is possible to increase the coarse engraving pixel pitch pc.

作为这时的粗雕刻像素间距pc,可以采用网点间距w。 In this case, as a crude engraving pixel pitch pc, dot pitch w may be employed. 该粗雕刻像素间距pc可以在上述的精密雕刻像素间距pp以上、到网点间距w以下的范围内任意设定。 The coarse engraving pixel pitch pc may be in the above-pitch precision engraving pixel pp above, the dot pitch w in the range of any of the following settings. 但是,越使其接近网点间距w,雕刻效率越高。 However, to approximate the dot pitch w, the higher the efficiency of the engraving.

图5是更准确表示形成在柔性感光材料10上的浮凸形状的说明图。 FIG 5 is an explanatory view showing a more accurate relief shape on the photosensitive material 10 is formed flexible.

作为表示浮凸形状的参数,有浮凸角度θ、浮凸深度d、用于构成顶部T的台阶dt以及坪面wt。 As a parameter representing the shape of the relief, embossed with an angle [theta], relief depth d, a step dt and plateau constituting the top surface of T wt. 浮凸角度θ是在全部浮凸中共通的值。 Relief angle θ is a value common to all of the emboss. 浮凸深度d是网点百分比为零的部分中的雕刻深度。 Relief depth d is an engraving depth of the dot percentage is zero portion. 还有,台阶dt是为了改善网点扩大而设置的,坪面wt是为了增强浮凸的机械强度而设置的,而在不形成顶部T自身时,台阶dt以及坪面wt的值是零。 Further, step dt is set in order to improve dot gain, the floor surface in order to enhance the mechanical strength wt relief being provided, but not forming a top T itself, step dt and plateau value is zero plane wt. 在上述的说明中,针对省略台阶dt以及坪面wt的情况进行说明。 In the above description, it will be described for the case of omitting the step dt and plateau wt of the surface.

另外,在采用图4所示的浮凸形状时,上述的最大深度dp可由下式(1)计算。 Further, when using the emboss shape as shown in FIG. 4, above the maximum depth dp is calculated by the following formula (1).

dp=(21/2·pc/2-wt)tan(θπ/180)+dt ···(1)还有,在不形成顶部T自身时,对台阶dt以及坪面w代入零即可。 dp = (21/2 · pc / 2-wt) tan (θπ / 180) + dt ··· (1) there is, at the time T itself is not formed on top of the floor surface and the step dt is substituted zero to w.

下面,针对使用该激光雕刻机对柔性感光材料10进行雕刻的柔性印刷版的制版工序进行说明。 Next, using this laser engraving machine for flexible light-sensitive material 10 engraved flexographic printing plate-making process will be described. 图6以及图7表示制版工序的流程。 6 and 7 showing a step of making the flow.

进行柔性印刷版的制版时,首先,由操作者指定浮凸形状和屏幕线数(步骤S1)。 When flexographic printing plate, first, the operator designates the number of relief shape and a screen (step S1) line. 该浮凸形状和屏幕线数从个人电脑13被输入,而发送到控制部15。 The relief shape and number of screen lines 13 are inputted from a personal computer, transmitted to the control unit 15.

接着,根据预先指定的屏幕线数,确定网点间距w(步骤S2)。 Next, the pre-specified number of screen lines, dots determined pitch w (step S2). 该网点间距w是屏幕线数的倒数。 The dot pitch w is the inverse of the number of screen lines.

接着,运算精密雕刻工序的最大深度(步骤S3)。 Next, the maximum depth of the precision engraving operation step (step S3). 使用上述式(1)进行该运算。 The calculation performed using the above formula (1).

接着,操作者指定析像度(步骤S4)。 Next, the operator specifies the resolution (step S4). 该析像度例如从1200dpi、2400dpi、4000dpi中选择。 The resolution, for example, selected from 1200dpi, 2400dpi, 4000dpi in.

接着,根据所指定的析像度,确定精密雕刻像素间距pp(步骤S5)。 Next, according to the specified resolution, determining the precision engraving pixel pitch pp (step S5). 并且,调整精密雕刻光束L1的副扫描方向的宽度,使得精密雕刻像素间距pp与精密雕刻光束L1的副扫描方向的宽度几乎一致。 And adjusting the sub-scanning direction, L1 is the width of the precision engraving beam, such that the precision engraving pixel pitch pp and the width L1 of the sub-scanning direction is almost the same precision engraving beam.

接着,确定精密雕刻时的扫描速度v1(步骤S6)。 Next, it is determined at the precision engraving scanning speed V1 (step S6). 该扫描速度v1是基于精密雕刻像素间距pp、最大深度dp、柔性感光材料10的雕刻感度Y、从激光光源14射出并照射到柔性感光材料10上的激光束的功率P,通过下述式(2)而确定的。 The scan velocity v1 is based on the precision engraving pixel pitch pp, maximum depth DP, engraving sensitivity Y flexible photosensitive material 10, light emitted from the laser light source 14 and irradiated to the power P of the laser beam 10 on a flexible photosensitive material, by the following formula ( 2) determined.

pp·dp·v1·Y=P ···(2)这里,雕刻感度Y是用激光束的能量E除以通过激光束而被雕刻的体积V所得的值。 pp · dp · v1 · Y = P ··· (2) where Y is E engraving sensitivity value obtained by dividing the volume V to be engraved by the laser beam energy of the laser beam. 还有,激光束的能量E是从激光光源14射出并照射在柔性感光材料10上的激光束的功率和照射时间相乘所得的值。 Further, the energy E of the laser beam 14 is emitted from the laser light source and the irradiation power and the irradiation time value obtained by multiplying the laser beam on the photosensitive material 10 is flexible.

图8是表示上述雕刻感度Y、和用通过激光束而被雕刻的凹部的表面积除以体积所得的S/V比之间的关系的图。 FIG 8 is a diagram showing the relationship between the engraving sensitivity Y, and divided by the volume obtained with a surface area of ​​the recess is engraved by the laser beam S / V ratio.

在该图中,横轴表示用通过激光束而被雕刻的凹部的表面积除以体积所得的S/V比,纵轴表示由实验求得的雕刻感度。 In the figure, the horizontal axis represents a volume obtained by dividing the S / V ratio of the surface area with the concave portion is carved by a laser beam, and the vertical axis represents the experimentally determined engraving sensitivity.

从该图可以明确,与S/V大致成比例而雕刻感度的值增大(也就是感度变差)。 Clear from the figure, the S / V value substantially proportional to the engraving sensitivity is increased (i.e., sensitivity is deteriorated). 这是因为S/V比越大,相对于体积的放热量的比率就越大,就不能有效的把所提供的能量用于雕刻。 This is because the S / V ratio is larger, the ratio of the exotherm the greater volume, can not effectively provide for the energy relative to the engraving. 因此,为了有效进行雕刻,使用S/V比小的区域是有效的。 Accordingly, in order to effectively engraving using S / V is smaller than the effective area.

另外,在图8所示的图中,将雕刻感度设为Y,将S/V比设为X的情况下,下述近似式(3)成立。 Further, in FIG. FIG. 8, the engraving sensitivity is Y, the case where the S / V ratio is X, and (3) established by the following approximate expression.

Y=3.21748+0.0577759X ···(3)再参照图6及图7,接着,计算粗雕刻工序的雕刻深度dc(步骤S7)。 Y = 3.21748 + 0.0577759X ··· (3) Referring to FIG. 6 and FIG. 7, then calculates the engraving depth dc of the coarse engraving process (step S7). 该雕刻深度dc是从浮凸深度d减去精密雕刻时的最大深度dp所得的值。 The engraving depth dc is the maximum depth dp value obtained by subtracting from the precision engraving the relief depth d.

接着,确定进行粗雕刻时的粗雕刻像素间距pc(步骤S8)。 Next, it is determined at the coarse engraving coarse engraving pixel pitch pc (step S8). 该粗雕刻像素间距pc,如上所述,与网点间距w一致。 The coarse engraving pixel pitch pc, as described above, consistent with the dot pitch w.

接着,确定粗雕刻时的扫描速度v2(步骤S9)。 Next, the scanning speed is determined at the coarse engraving V2 (step S9). 该扫描速度V2与扫描速度v1的情况相同,基于粗雕刻像素间距pc、雕刻深度dc、柔性感光材料10的雕刻感度Y、从激光光源14射出并照射在柔性感光材料10上的激光束的功率P,由下述式(4)确定。 The scan speed V2 identical to the scan velocity v1 of the case, based on the coarse engraving pixel pitch pc, the engraving depth dc, engraving sensitivity Y flexible photosensitive material 10, the laser light source 14 emits and irradiates a laser beam on the flexible photosensitive material 10 power P, is determined by the following formula (4).

pc·dc·v2·Y=P ···(4)接着,根据在柔性感光材料10上应当形成的图像数据,作成表示应雕刻的浮凸形状的浮凸数据(步骤S10)。 pc · dc · v2 · Y = P ··· (4) Next, the image data on the photosensitive material 10 should be formed of flexible and made to be data showing a relief shape of the embossed engraving (step S10). 成为基础的图像数据通过在线、或者通过离线而经由个人电脑13被转送到控制部15。 Become the basis of image data by a personal computer via the off-line, 13 or 15 are transferred to the control unit. 基于该图像数据,作成浮凸数据。 Based on the image data, creating the relief data.

该浮凸数据是使各浮凸的数据重叠的数据,在互相重复的区域中,使深度更浅的数据优先。 The emboss data is the data of each relief is superimposed data, in the region of overlap and the shallower the depth of the priority data.

图9是示意性表示浮凸数据的作成方法的说明图。 9 is a schematic explanatory view showing a method of creating relief data.

该图表示形成浮凸1和浮凸2的状态。 The figure shows the state of forming a relief and embossed 2. 浮凸1和浮凸2的倾斜部接触的部位的浮凸1侧的区域使用浮凸1的浮凸数据,浮凸1和浮凸2的倾斜部接触的部位的浮凸2侧的区域使用浮凸2的浮凸数据。 Region using embossed 2 side region embossed one side of the contact portion of the embossed inclined portion 1 and relief 2 using emboss the emboss data 1, the embossed inclined portion 1 and relief 2 contact portions relief relief 2 data.

接着,根据浮凸数据作成精密雕刻用的多值数据(步骤S11)。 Next, creating multi-value data (step S11) based on the precision engraving emboss data. 该多值数据是相对于网点面积率为0%的区域执行直到最大深度dp的雕刻的多值数据。 The multi-value data with respect to the dot area rate of 0% until the execution region multivalued maximum depth dp engraving data. 该多值数据在网点面积率为0%~100%的区域中,被作成为能够在如图4中(c)所示的阶梯状上形成浮凸的倾斜部的数据。 The multi-value data dot area rate of 0% to 100% of the area is made to become the data portion can be inclined (c) forming on the relief shape as shown in step 4 in FIG.

接着,根据浮凸数据作成粗雕刻用的多值数据(步骤S12)。 Next, creating multi-value data (step S12) based on crude emboss engraving data. 该多值数据是通过相对于网点面积率为0%的区域,考虑到浮凸角度θ的基础上,以雕刻深度dc进行雕刻,从而最终进行浮凸深度d的雕刻这样的多值数据。 The multivalued data by relative area ratio of 0% dot area, taking into account the relief angle θ to engraving the engraving depth dc, so that the final multi-value data such engraving relief depth d.

接着,通过控制部15的控制而控制移动机构56,选择通过了可变式光束扩展器51的激光束成为作为精密雕刻光束L1所需要的束径这样的透镜对52、53、54(步骤S13)。 Subsequently, the moving mechanism 56 and the control by the control section 15 controlling, by the selected variable beam expander of the laser beam 51 becomes a lens such as a precision engraving beam L1 to the desired beam diameter 52, 53 (step S13 ). 由此,调整精密雕刻光束L1的副扫描方向的宽度,使得精密雕刻像素间距pp和精密雕刻光束L1的副扫描方向的宽度基本一致。 Thus, the adjustment of L1 sub-scanning direction of the precision engraving beam width, so that the width of the precision engraving pixel pitch pp precision engraving beam L1 and the sub-scanning direction is substantially uniform.

接下来进行精密雕刻(步骤14)。 Next precision engraving (step 14). 这时,控制部15通过控制电机驱动器23、33,来控制记录鼓11的旋转速度和记录光头12的移动速度,使得精密雕刻光束L1以上述的扫描速度v1对柔性感光材料10进行扫描。 In this case, the control unit 15 23 and 33 to control the recording drum by controlling the rotational speed of the drive motor 11 and the moving speed of the recording head 12, so that the precision engraving beam L1 to scan the aforementioned flexible scan velocity v1 of the photosensitive material 10. 另外,控制部15通过控制AOM驱动器42,进行直到最大深度dp的倾斜面等的雕刻。 Further, the control section 1542, until the maximum engraving depth dp of the inclined surface and the like by controlling the AOM drive.

该精密雕刻时,如后所述,AOM单元41被配置于调制位置,激光光源14通过激光光源控制部64的控制而连续振荡。 When the precision engraving, as described later, the AOM unit 41 is arranged at a position modulated, continuous wave laser light source 14 is controlled by the control unit 64 of the laser light source.

接着,通过控制部15的控制而控制移动机构56,选择通过了可变式光束扩展器51的激光束成为作为粗雕刻光束L2所需要的束径这样的透镜对52、53、54(步骤S15)。 Subsequently, the moving mechanism 56 and the control by the control section 15 controlling, by the selected variable beam expander of the laser beam 51 is such a lens become coarse engraving beam L2 as required beam diameter of 52, 53, (Step S15 ). 由此,调整粗雕刻光束L2的副扫描方向的宽度,使得粗雕刻像素间距pc和粗雕刻光束L2的副扫描方向的宽度基本一致。 Accordingly, the adjustment width of the beam engraving crude sub-scanning direction is L2, such substantially uniform width and coarse engraving pixel pitch pc in the sub-scanning direction beam L2 coarse engraving.

接下来进行粗雕刻(步骤S16)。 Next, coarse engraving (step S16). 这时,控制部15通过控制电机驱动器23、33,来控制记录鼓11的旋转速度和记录光头12的移动速度,使得粗雕刻光束L2以上述的扫描速度v2在柔性感光材料10上进行扫描。 In this case, the control unit 15 23 and 33 to control the recording drum by controlling the rotational speed of the drive motor 11 and the moving speed of the recording head 12, so that the above-described coarse engraving beam L2 to scan the scanning speed v2 on the flexible photosensitive material 10. 另外,控制部15通过控制AOM驱动器42或驱动器13,进行从最大深度dp到浮凸深度d的倾斜面等的雕刻。 Further, the control unit 1513 performs the maximum depth dp to the relief depth d of the inclined surface of the engraving and the like by controlling the AOM driver 42 or drive. 通过以上的工序,完成图4所示的浮凸的雕刻。 Through the above steps, the emboss engraving 4 shown in FIG.

该粗雕刻时,如后所述,可采用以下任意的方式。 When the coarse engraving, as described later, may take any of the following ways.

(1)使激光光源14脉冲振荡,将AOM单元41配置于退避位置。 (1) laser pulse oscillation light source 14, the AOM unit 41 is disposed in the retracted position.

(2)使激光光源14脉冲振荡,将AOM单元41配置于调制位置。 (2) a pulsed laser light source 14, the AOM modulation unit 41 is disposed at a position.

(3)使激光光源14连续振荡,将AOM单元41配置于退避位置。 (3) a continuous wave laser light source 14, the AOM unit 41 is disposed in the retracted position.

另外,该粗雕刻时,通过预备加热机构71将柔性感光材料10预备加热。 Further, when the coarse engraving, preliminary heating means 71 by a flexible photosensitive material 10 preheated.

接着,比较现有的制版方法和本发明的制版方法的雕刻时间。 Next, time comparator conventional engraving plate making method and a plate making method of the present invention. 但是,以下的比较是使激光光源14连续振荡,不进行预备加热,通过AOM72进行调制的情况。 However, the following comparison is a continuous wave laser light source 14, without preliminary heating, the modulation by AOM72.

现有的雕刻方法例如,如图10所示,使用具有和精密雕刻光束L1相同的束径的激光束,以扫描速度L(mm/s)雕刻了宽21.2μm、深500μm的凹部时的S及V用下式表示,S/V比约为98。 Conventional methods such as engraving, as shown, a laser beam having a precision engraving beam L1 and the beam diameter of the same, at a scanning speed L (mm / s) carved wide 21.2μm, S 500μm when the depth of the concave portion 10 in FIG. and represented by the formula V, S / V ratio of about 98.

S=(0.5×2+0.0212×2)·L=1.0424LV=0.5·0.0212·L=0.0106·L S = (0.5 × 2 + 0.0212 × 2) · L = 1.0424LV = 0.5 · 0.0212 · L = 0.0106 · L

而将S/V比98代入上式(3)的X时,雕刻感度Y成为9.86(J/mm3)。 And the S / V ratio X 98 is substituted into the equation (3), Y engraving sensitivity becomes 9.86 (J / mm3). 这时,当设定雕刻区域的面积为A、最大雕刻深度(浮凸深度)为d时,雕刻全区域所需的能量成为A·d·Y=9.86·A·d,当设定从激光光源14射出并照射在柔性感光材料10上的激光束的功率为P时,雕刻时间te由下式表示。 In this case, when the set region is engraved area A, the maximum engraving depth (relief depth) is d, the energy required for the whole region becomes engraving A · d · Y = 9.86 · A · d, is set when the laser and irradiating light source 14 emits a laser beam power on the photosensitive material 10 is a flexible P, the engraving time te by the following formula.

te=9.86·A·d/P当使雕刻面积A为1000000(mm2)、浮凸深度d为0.5(mm)、从激光光源14射出并照射在柔性感光材料10上的激光束的功率P为200(W)时,雕刻时间te约为6.8小时。 te = 9.86 · A · d / P when the engraving area A 1000000 (mm2), the relief depth d is 0.5 (mm), emitted from the laser light source 14 from, and irradiation power P of the laser beam 10 on a flexible photographic material when the 200 (W), about 6.8 hours engraving time te.

关于本发明的雕刻方法首先,为了进行精密雕刻,如图11所示,使用精密雕刻光束L1,以扫描速度L(mm/s)雕刻了宽21.2μm、深119.7μm的凹部时的S及V由下式表示,S/V比约为111。 About engraving method of the present invention First, for precision engraving, 11, using a precision engraving beam L1, with a scanning rate L (mm / s) carved wide 21.2μm, S, and V is the deep recess portion 119.7μm represented by the formula, S / V ratio of about 111. 而且,作为雕刻深度的119.7μm是由上述式(1)运算所得的。 Furthermore, as the depth of the engraving is 119.7μm by the above formula (1) obtained in calculation.

S=(0.1197×2+0.0212×2)·L=0.2818LV=0.1197·0.0212·L=0.00253764·L而把S/V比111输入到上式(3)的X时,雕刻感度Y成为10.7(J/mm3)。 When S = (0.1197 × 2 + 0.0212 × 2) · L = 0.2818LV = 0.1197 · 0.0212 · L = 0.00253764 · L and the S / V ratio of 111 is input to the X on the formula (3), the engraving sensitivity Y becomes 10.7 ( J / mm3). 这时,当设定雕刻区域的面积为A,最大深度为dp时,则雕刻整个区域所需的能量成为A·dp·Y=10.7·A·dp,当设定从激光光源14射出并照射在柔性感光材料10上的激光束的功率为P时,雕刻时间t1由下式表示。 At this time, the energy when the set region is engraved area A, maximum depth DP, the entire region becomes the desired engraving A · dp · Y = 10.7 · A · dp, when the light emitted from the laser light source 14 is set and irradiated power of the laser beam on the photosensitive material 10 is a flexible P, the engraving time t1 represented by the following formula.

t1=10.7·A·dp/P当使雕刻面积A为1000000(mm2)、最大深度dp为0.1197(mm)、激光光源14的功率P为200(W)时,雕刻时间t1约为1.7789小时。 When t1 = 10.7 · A · dp / P when the engraving area A 1000000 (mm2), the maximum depth dp of 0.1197 (mm), a laser light power P 14 is 200 (W), time t1 is about 1.7789 hours engraving.

接着,为了执行粗雕刻,如图12所示,使用粗雕刻光束L2,以扫描速度L(mm/s)雕刻了宽84.7μm、深308.3μm的凹部时的S及V由下式表示,S/V比约为28.9。 Next, in order to perform a coarse engraving, as shown in FIG crude engraving beam 12 L2, a scanning speed L (mm / s) carved wide 84.7μm, S, and V is the deep recess portion 308.3μm represented by the following formula, S / V ratio of about 28.9. 而且,作为雕刻深度的308.3μm是从浮凸深度d减去最大深度dp所得的,作为雕刻宽度的84.7μm是基于粗雕刻像素间距pc确定的。 Furthermore, as the depth of the engraving is 308.3μm subtracting the maximum depth dp from the resulting relief depth d, as width of 84.7μm engraving coarse engraving pixel pitch is based on the determined pc.

S=(03803×2+0.0847×2·L=0.93L S = (03803 × 2 + 0.0847 × 2 · L = 0.93L

V=0.3803·0.0854/·L=0.032211·L而当把S/V比28.9输入上式(3)的X时,雕刻感度Y成为5.18(J/mm3)。 V = 0.3803 · 0.0854 / · L = 0.032211 · L and when the S / V ratio X 28.9 input of formula (3), Y engraving sensitivity becomes 5.18 (J / mm3). 这时,当设定雕刻区域的面积为A,雕刻深度为dc时,雕刻整个区域所需的能量为A·dc·Y=5.18·A·dc,当设定从激光光源14射出并照射在柔性感光材料10上的激光束的功率为P时,雕刻时间t2由下式表示。 In this case, when setting the area of ​​the engraving area A, as the engraving depth dc, the energy required for the entire area of ​​the engraving A · dc · Y = 5.18 · A · dc, when the light emitted from the laser light source 14 is set and irradiated power of the laser beam on the photosensitive material 10 is a flexible P, the engraving time t2 represented by the following formula.

t1=5.18·A·dc/P若使雕刻面积A为1000000(mm2)、最大深度dp为0.3803(mm)、从激光光源14射出并照射在柔性感光材料10上的激光束的功率P为200(W)时,雕刻时间t2约为2.7361小时。 t1 = 5.18 · A · dc / P Ruoshi engraving area A 1000000 (mm2), the maximum depth dp of 0.3803 (mm), light emitted from the laser light source 14 and the power P of the laser beam is irradiated on the photosensitive material is a flexible 10 200 (W), the engraving time t2 is about 2.7361 hours.

从而上述精密雕刻时间t1与粗雕刻时间t2相加所得的雕刻时间t为4.515小时。 Whereby said precision engraving time t1 and time t2 is obtained by adding the coarse engraving engraving time t is 4.515 hours. 该雕刻时间t,相比于现有的雕刻时间te(6.8小时),成为大幅缩短了的时间。 The engraving time t, compared with the existing engraving time te (6.8 hours), became significantly shorten the time.

此外,虽在上述的实施形式中将作为凸版印刷版之一的柔性感光材料作为记录材料来使用,但对于凹版等的凹版印刷版,即使对记录材料通过激光雕刻而形成凹部的情况下本发明也能适用。 Further, although as the recording material used in the above-described form of embodiment of one of the photosensitive material as a flexible relief printing plate, but the gravure intaglio printing plates and the like, the present invention is to form a recess portion even in the case of the recording material by laser engraving It can be applied.

图13是示意性表示这种实施形式的凹板印刷版的形状的说明图。 FIG 13 is a schematic explanatory view showing this form of embodiment gravure plate shape.

如该图所示,在进行凹版印刷版的制版时,也是在精密雕刻工序中使用具有小的束径的精密雕刻光束L1。 As shown in FIG, during intaglio printing plate, it is the use of precision engraving beam L1 having a small beam diameter at the precision engraving process. 从而将该精密雕刻光束L1以精密雕刻像素间距pp照射在凹版印刷版上,从其表面到深度dp对凹版印刷版进行雕刻。 The precision engraving beam L1 so as to precision engraving pixel pitch pp is irradiated on the intaglio printing plate, to a depth dp from the surface of the gravure printing plate engraving.

另外,在粗雕刻工序中,使用具有大的束径的粗雕刻光束L2。 Further, in the coarse engraving step, a coarse engraving beam having a large beam diameter L2. 从而将该粗雕刻光束L2以粗雕刻像素间距pc照射在凹版印刷版上,从上述深度dp到深度d而对凹版印刷版进行雕刻。 The crude thus engraving beam L2 to the coarse engraving pixel pitch pc is irradiated on the intaglio printing plates, intaglio printing and engraving depth dp from the plate to a depth d. 这样,因为由精密雕刻工序雕刻过的区域通过粗雕刻工序而被再次雕刻,所以粗雕刻工序执行后的从凹板印刷版表面开始的雕刻深度d,比精密雕刻的雕刻深度dp大。 Thus, since the engraving process by the precision engraving area through step by coarse engraving are engraved again, the engraving depth d from the start of the printing plate surface of the gravure engraving step performed following the rough, DP is larger than the precision engraving engraving depth. 在该粗雕刻工序中,因为对不直接影响单元形状的部分进行雕刻,所以可以增大粗雕刻像素间距pc。 In this step, the coarse engraving, because the portion does not directly influence on the shape of the engraving unit, can be increased coarse engraving pixel pitch pc.

下面,针对通过有效使用激光光源而在保持高的制版精度的状态下缩短制版时间的本发明的第二个特征进行说明。 Next, a second feature for a shortened time by plate making effective use of the laser light source while maintaining high accuracy of the plate of the present invention will be described.

首先,针对激光光源14的波形进行研究。 First, studies on the waveform of the laser light source 14.

一般的激光光源,可以切换连续振荡和脉冲振荡。 General laser light source can be switched pulse oscillation and continuous oscillation. 而脉冲振荡时的峰值功率比连续振荡时的峰值功率大。 And the peak power during pulsed peak power is greater than the continuous oscillation. 例如在碳酸气体激光的情况下,脉冲振荡时的峰值功率是连续振荡时的峰值功率的数倍乃至10倍的程度,在YAG激光的情况下,脉冲振荡时的峰值功率是连续振荡时的峰值功率的100倍左右。 For example in the case where the peak value of the carbon dioxide gas laser, a pulsed peak power is several times or even 10 times the level of the peak power during continuous oscillation in the case of the YAG laser, a pulsed peak power is continuous oscillation power of about 100 times. 而在雕刻印刷版时,峰值功率越大,越能防止热量的发散而有效进行雕刻。 And when the engraved printing plate, the larger the peak power, the radiation of heat can be prevented effectively carving.

另一方面,脉冲振荡时的最大频率是100kHz左右。 On the other hand, the maximum frequency of pulsed oscillation is about 100kHz. 该频率若是上述的粗雕刻工序就足够了,但要进行精密雕刻工序则不足。 If the frequency of the above-described coarse step of engraving is sufficient, but the lack of precision in the engraving step. 因此,在粗雕刻工序中使激光光源14脉冲振荡而进行雕刻,在精密雕刻工序中,在使激光光源14连续振荡的同时,通过其他的调制器调制激光束而进行雕刻。 Accordingly, in the coarse engraving step manipulation pulsed laser source 14 and engraving, precision engraving step, in the continuous oscillation laser light source 14, while the other is carried out by engraving modulator modulates the laser beam. 由此,能够有效使用激光束,在保持高的制版精度的情况下可以缩短制版时间。 Thereby, the laser beam can be effectively used, while maintaining high accuracy of the plate platemaking time may be shortened.

下面,针对调制器的有无进行研究。 Next, conduct research on whether the modulator.

例如,AOM72可进行1MHz程度的高速调制,可是AOM72所使用的锗,激光束的透射率差,激光束在AOM72中产生百分之几的损失。 For example, AOM72 1MHz may be high-speed modulation degree, but the transmittance of germanium, the laser beam used AOM72 difference in loss of several percent of the laser beam in the AOM72. 因此,当在粗雕刻工序中利用激光光源14自身调制激光束而进行雕刻,而在精密雕刻工序中通过调制器进行调制而进行雕刻时,能够有效使用激光束,在保持高的制版精度的情况下,可以缩短制版时间。 Accordingly, when the engraving is carried out using a laser light source in the coarse engraving step 14 itself modulated laser beam, and modulating the precision engraving process by a modulator and engraving can be effectively using a laser beam, in the case of maintaining high plate-making accuracy next, it can shorten the platemaking time.

另外,也可在进行精密雕刻工序时,使激光光源14模拟连续振荡。 Further, also during step precision engraving, the laser light source 14 is continuous wave analog. 则使从该激光光源14射出的激光束通过AOM72而调制。 So that the modulated laser beam emitted from the laser light source 14 by AOM72.

作为使激光光源14模拟连续振荡的方式可考虑下面这样的方式。 As the laser light source 14 is continuous wave analog manner in such a manner can be considered below.

例如,当从驱动器63向激光光源14供给高于应答速度程度的高频的驱动信号时,虽然激光光源14脉冲振荡,但看上去是射出连续的激光束。 For example, when the drive signal is higher than the degree of the response speed from the high frequency driver 63 is supplied to the laser light source 14, although a pulse oscillation laser light source 14, but it looks like a continuous laser beam is emitted. 或者,在驱动器63对激光光源14供给高功率(デユ一テイ)的驱动信号时,也是虽然激光光源14脉冲振荡,但看上去是射出连续的激光束。 Alternatively, when the laser driver 63 supplies a high-power light source 14 (a Du Pont イ Te) of the drive signal, while the laser light source 14 is pulsed, but it looks like a continuous laser beam is emitted. 这样,使激光光源14模拟连续振荡,同时从切换电路65向AOM驱动器42提供图像信号来调制激光束,对柔性感光材料10进行精密雕刻。 Thus, the laser light source 14 is continuous wave simulation, while the image signal from the switching circuit 65 to the AOM driver 42 to modulate the laser beam, the photosensitive material 10 is flexible precision engraving.

下面针对预备加热进行研究。 The following study for pre-heating.

例如,公知使用了柔性感光材料10时,预先将柔性感光材料10加热到摄氏100度的话,提高30%左右激光束的加工效率。 For example, known to use the flexible photosensitive material 10, will advance the flexible photosensitive material 10 is heated to 100 degrees Celsius, then improve the processing efficiency of about 30% of the laser beam. 因此,若进行这样预备加热,就能够有效进行雕刻。 Therefore, when performing such preliminary heating, it is possible to effectively engraving. 但是进行了预备加热的情况下,柔性感光材料10热膨胀,其尺寸精度恶化。 But with the case where the preliminary heating, the flexible thermal expansion of the photosensitive material 10, deterioration of dimensional accuracy. 另外,在加热温度不均时,浮凸深度会产生偏差。 Further, when the heating temperature variation, the relief depth will vary. 因此,在粗雕刻工序中,进行预备加热而进行雕刻,在精密雕刻工序中,不进行预备加热,或者以比粗雕刻工序低的温度进行预备加热而进行雕刻时,能够在保持高的制版精度的情况下缩短制版时间。 Therefore, when the rough engraving step, preliminary heating was engraved in the precision engraving process, without preheating, or for pre-heating is lower than the coarse engraving process temperature engraving, it is possible to maintain a high plate-making accuracy shorten the platemaking time in the case.

基于以上前提,就对图4所示的柔性感光材料10的制版工序的实施形式进行说明。 Based on the above premise, it is the embodiment of a flexible plate-making process of the photosensitive material 10 shown in FIG. 4 will be described.

首先,关于精密雕刻工序进行说明。 First, the precision engraving process will be described. 图14是表示精密雕刻工序的记录光束等的说明图。 FIG 14 is an explanatory view of a recording beam precision engraving process and the like.

在精密雕刻工序中,如上所述,因为雕刻深度比较浅,所以扫描速度快,并且,由于像素间距小,需要提高调制频率。 In the precision engraving step, as described above, because the engraving depth is relatively shallow, so the scanning speed, and, due to the small pixel pitch, it is necessary to improve the modulation frequency. 因此,在精密雕刻工序中,将AOM单元41配置于调制位置。 Thus, the precision engraving process, the AOM modulation unit 41 is disposed at a position. 另外,通过激光光源控制部64的控制,使激光光源14连续振荡或模拟连续振荡。 Further, by controlling the laser light source control unit 64, the laser light source 14 a continuous wave continuous wave or analog. 并且,通过切换电路65,使图像信号输入到AOM驱动器42中。 Further, the switching circuit 65, an image signal is input to the AOM driver 42. 在这种情况下,如图14所示,能够把连续振荡的激光束,通过经AOM72而使调制效率变化的调制信号而调制,形成记录光束。 In this case, as illustrated, can be of the continuous wave laser beam 14, modulated by the signal AOM72 modulated modulation efficiency changes, the recording beam is formed. 于是在精密雕刻工序中,为了得到高的雕刻精度,不进行预备加热。 Thus the precision engraving step, in order to obtain a high precision engraving, without preheating.

下面,就粗雕刻工序的第一实施形式进行说明。 Hereinafter, a first embodiment will be described in the form of coarse engraving step. 图15是表示第一实施形式的粗雕刻工序的记录光束地说明图。 FIG 15 is a diagram showing a first embodiment of the recording beam coarse engraving step explained in FIG.

在粗雕刻工序中,因为雕刻深度比较深,所以扫描速度慢,并且,由于像素间距大,所以调制速度慢也可以。 In the coarse engraving process, the engraving depth because relatively deep, the scanning speed is slow, and since a large pixel pitch, the modulation speed may be slow. 因此,在该第一实施形式的粗雕刻工序中,使AOM单元41移动至退避位置。 Thus, in the first embodiment in the form of coarse engraving step, the AOM unit 41 is moved to the retracted position. 另外,通过激光光源控制部64的控制使激光光源14脉冲振荡。 Further, by controlling the laser light source control section 64 so that the laser light source 14 is pulsed. 并且,通过切换电路65,使图像信号输入到激光光源控制部64。 Further, the switching circuit 65, so that the image signal is input to the control unit 64 the laser light source. 进而,通过预备加热机构71预备加热柔性感光材料10。 Furthermore, preliminary heating means 71 by preheating the photosensitive material 10 is flexible. 在这种情况下,如图15所示,激光束由激光光源14本身调制。 In this case, as shown in Figure 15, the laser beam modulated by the laser source 14 itself. 通过这样,能够从激光光源14射出峰值功率大的脉冲振荡的激光束。 With this, a large peak power can be emitted from a pulsed laser beam from the laser light source 14. 于是,因为用激光光源14本身调制激光束,所以不会发生因AOM72导致的激光束的光量损失。 Thus, since the laser light source 14 with a modulated laser beam in itself, so it will not cause a light amount loss due AOM72 laser beam occurs. 而且,因为柔性感光材料10被预备加热,所以能有效进行雕刻。 Further, since the flexible photosensitive material 10 is preliminarily heated, it can be effectively carving. 因此,能够缩短制版时间。 Therefore, it is possible to shorten the platemaking time.

下面,针对粗雕刻工序的第二实施形式进行说明。 Next, a second embodiment for the coarse engraving process will be described. 图16是表示第二实施形式的粗雕刻工序的记录光束的说明图。 FIG 16 is a diagram illustrating a second embodiment of the recording beam in the form of coarse engraving step.

在该第二实施形式的粗雕刻工序中,使AOM单元41移动至调制位置。 In this second embodiment of the coarse engraving step, the AOM modulation unit 41 is moved to the position. 另外,通过激光光源控制部64的控制使激光光源14以一定强度脉冲振荡。 Further, by controlling the laser light source control section 64 causes the laser light source 14 at a constant intensity pulse oscillation. 并且,通过切换电路65,使图像信号输入到AOM驱动器42中。 Further, the switching circuit 65, an image signal is input to the AOM driver 42. 进而,通过预备加热机构71预备加热柔性感光材料10。 Furthermore, preliminary heating means 71 by preheating the photosensitive material 10 is flexible. 在这种情况下,如图16所示,能够通过经AOM72而使调制效率变化了的调制信号来调制以一定的输出脉冲振荡的激光束,形成记录光束。 In this case, as shown in Figure 16, the laser beam can be modulated at a constant pulse oscillation output by the changed by the modulation efficiency AOM72 modulated signal, a recording beam is formed. 这种情况下,能够从激光光源14射出峰值功率大的脉冲振荡的激光束。 In this case, a large peak power emit a pulsed laser beam from the laser light source 14. 而且,因为柔性感光材料10被预备加热了,所以能够有效进行雕刻。 Further, since the flexible photosensitive material 10 is preliminarily heated, the engraving can be effectively performed. 所以能够缩短制版时间。 It is possible to shorten the platemaking time. 另外,因为使用了AOM72的调制信号进行调制,所以能够正确调制。 Further, because of the use AOM72 modulated signal is modulated, it is possible to correctly modulated.

下面,针对粗雕刻工序的第三实施形式进行说明。 Next, a third embodiment for coarse engraving process will be described. 图17是表示第三实施形式的粗雕刻工序的记录光束的说明图。 FIG 17 is a diagram illustrating a third embodiment of the recording beam in the form of coarse engraving step.

在该第三实施形式的粗雕刻工序中,使AOM单元41移动至退避位置。 In this third embodiment in the form of coarse engraving step, the AOM unit 41 is moved to the retracted position. 另外,通过激光光源控制部64的控制,使激光光源14连续振荡。 Further, by controlling the laser light source control unit 64, the laser light source 14 continuously oscillating. 并且,通过切换电路65,使图像信号输入到激光光源控制部64中。 Further, the switching circuit 65, so that the image signal is input to the control unit 64 in the laser light source. 进而,通过预备加热机构71预备加热柔性感光材料10。 Furthermore, preliminary heating means 71 by preheating the photosensitive material 10 is flexible. 在这种情况下,如图17所示,激光束由激光光源本身调制。 In this case, as shown in FIG. 17, a laser beam modulated by the laser source itself. 这时,来自激光光源14的激光束的峰值功率虽然小,但是因为用激光光源14自身来调制激光束,所以不会发生因AOM72导致的激光束的光量损失。 At this time, the peak power of the laser beam from the laser light source 14 is small, but because the laser light source 14 itself is modulated laser beam, the light amount loss caused by AOM72 laser beam does not occur. 而且,因为柔性感光材料10被预备加热,所以能够有效进行雕刻。 Further, since the flexible photosensitive material 10 is preliminarily heated, it can be effectively carving. 所以能够缩短制版时间。 It is possible to shorten the platemaking time.

而且,在上述的实施形式中,在精密雕刻工序中,为了得到高的雕刻精度而中止预备加热。 Further, in the embodiment described above, the precision engraving process in order to obtain a high precision engraving suspended preheating. 可是,在精密雕刻工序中,通过进行比粗雕刻工序温度低的预备加热,也可以在保持高的精度的情况下有效进行雕刻。 Effective engraving case, however, the precision engraving step, performed by the coarse engraving is lower than the temperature of the preliminary heating step, it may be kept high accuracy.

然而,在粗雕刻工序中预备加热也不是必须的。 However, the coarse engraving at the preliminary heating step is not essential.

此外,在上述的实施形式中,通过将AOM72移动到退避位置,AOM72就不位于从激光光源14射出的激光的光路上。 Further, in the embodiment described above, by AOM72 moved to the retracted position, AOM72 not located on the optical path of the laser light emitted from the laser light source 14. 可是,不使AOM72本身移动,而通过设定适当的迂回光路,也可使从激光光源14射出的激光不经由AOM72,而入射到可变式光束扩展器51的透镜对52、53、54中的任意一个透镜对中。 However, without AOM72 move itself through the detour setting an appropriate light path, it can be emitted from the laser light source 14 without passing through AOM72, variable incident beam expander lens 51 pairs 52,53, 54 any one pair of lenses.

而且,上述实施形式中,虽然举例说明了对卷在记录鼓11上的片状的记录材料的雕刻,但也可以在使例如凹版缸那样的圆筒状的记录材料旋转的同时,对该记录材料表面对应于图像信号实施直接雕刻。 Further, the above-described embodiment, although the illustrated engraved roll sheet-like recording material on the recording drum 11, it may be a gravure cylinder at the same time as that the cylindrical rotary recording material, for example, the record surface of the material embodiment of the image signal corresponding to the direct engraving.

此外,在上述的实施形式中,在精密雕刻工序中射出的激光束,具有作为第一束径的小的束径,用于以作为第一像素间距的精密雕刻像素间距pp,进行雕刻直到作为第一深度的最大深度dp,在粗雕刻工序中射出的激光束,具有作为第二束径的大的束径,用于以作为第二像素间距的粗雕刻像素间距pc,进行雕刻直到作为第二深度的浮凸深度d。 Further, in the embodiment described above, the precision engraving step emitted laser beam with a small beam diameter as a first beam path, for a first pixel pitch as the precision engraving pixel pitch pp, engraving is carried out until a first depth maximum depth DP, emitted in the coarse engraving step the laser beam, the beam having a large beam diameter as the second diameter for coarse engraving pixel pitch pc is the second pixel pitch, as the engraving until two depth emboss depth d.

而且,上述的实施形式中是在精密雕刻之后进行粗雕刻。 Further, the above-described embodiment is performed after the coarse engraving precision engraving. 可是,雕刻的顺序并不限定于此。 However, the order is not limited thereto engraving. 也可以最先进行粗雕刻然后进行精密雕刻。 The first engraving can also be rough and precision carving. 在这种情况下,也能比只通过精密雕刻进行图像记录的情况缩短扫描时间。 In this case, the scanning time can be shortened than the case where only the image recording by the precision engraving. 用图18来说明。 18 will be explained with reference to FIG.

图18是示意性说明和先前使用图4说明的同样的柔性感光材料10表面的形状的说明图。 18 and FIG. 10 is a diagram illustrating the same surface of the flexible light-sensitive material using the previously described FIG. 4 is a schematic illustration of a shape. 另外,图18中(a)是在柔性感光材料10上形成在主扫描方向上的7个浮凸的平面图,图18中(b)是对柔性感光材料10进行粗雕刻之后的截面图,图18中(c)是对进行粗雕刻之后的柔性感光材料10又进行精密雕刻之后的截面图。 In addition, 18 in FIG. (A) is formed in the main scanning direction on a flexible photosensitive material 10 7 a plan view of the embossed, FIG. 18 (b) is a cross-sectional view after the flexible photosensitive material 10 coarse engraving, FIG. 18 (c) is a cross-sectional view after the flexible photosensitive material 10 after the engraving and coarse engraving precision. 还有,在图18中,为了方便说明,示出了从图的左侧开始形成网点面积率分别是0%、1%、1%、2%、2%、0%、0%的7个浮凸的情况。 Further, in FIG. 18, for convenience of illustration, the left side of FIG began to form from the dot area rate is 0%, 1%, 1%, 2%, 2%, 0%, 0% 7 floating situation convex.

在如图18中(b)所示的粗雕刻工序中,对应该只利用精密雕刻而进行雕刻的区域(即对网点形状有直接影响的区域)之外的区域进行雕刻。 In the coarse engraving step 18 shown in (b), to be performed using only the precision engraving engraved area (i.e., has a direct impact on the shape of the dot region) other than the engraving area. 即通过将粗雕刻光束L2以粗雕刻像素间距pc(与网点间距相等)照射到柔性感光材料10,从而除去图中的阴影部分。 I.e., by engraving beam L2 crude coarse engraving pixel pitch pc to irradiate the photosensitive material 10 to the flexible (equal to dot pitch), thereby removing the hatched portion in FIG. 由此形成对各浮凸的网点形状没有直接影响的倾斜面等。 Thereby forming an inclined surface would not directly affect the dot shape of each relief and the like.

这个阶段进行的雕刻的最大深度ddc,与先前用图4说明的雕刻深度dc大致相等。 The maximum depth of the engraving ddc stage of the engraving depth dc previously described with FIG. 4 is substantially equal.

另外,在该粗雕刻工序中,因为对不直接影响网点形状的部分进行雕刻,所以可以增大粗雕刻像素间距pc。 Further, this crude engraving step, because of the engraving portion does not directly affect the dot shape, it is possible to increase the coarse engraving pixel pitch pc.

而且,在进行该粗雕刻时,如先前说明的那样,可以采用以下任意方式。 Further, during the coarse engraving, as previously explained, any of the following ways may be adopted.

(1)使激光光源14脉冲振荡,把AOM单元41配置于退避位置。 (1) reacting a pulsed laser light source 14, the AOM unit 41 is disposed in the retracted position.

(2)使激光光源14脉冲振荡,把AOM单元41配置于调制位置。 (2) a pulsed laser light source 14, the AOM modulation unit 41 is disposed at a position.

(3)使激光光源14连续振荡,把AOM单元41配置于退避位置。 (3) a continuous wave laser light source 14, the AOM unit 41 is disposed in the retracted position.

另外,该粗雕刻时,通过预备加热机构71将柔性感光材料10预备加热。 Further, when the coarse engraving, preliminary heating means 71 by a flexible photosensitive material 10 preheated.

粗雕刻工序完成之后,接着将精密雕刻光束L1以比粗雕刻像素间距pc小的精密雕刻像素间距pp照射到柔性感光材料10来实施精密雕刻。 After the coarse engraving process is completed, then the precision engraving beam L1 is irradiated to the pixel pitch pc pp precision engraving smaller than the coarse engraving pixel pitch to a flexible photosensitive material 10 to a precision engraving. 这个阶段如图18中(c)所示,对于对网点形状有直接影响的区域(阴影部分a)、以及对网点形状没有影响的、通过先前的粗雕刻没有达到期望的浮凸深度d的区域(阴影部分b)实施雕刻。 18 (c), for the region directly affect the shape of the dot (hatched portion A), and no effect on the dot shape at this stage of the FIG, by previous rough engraving area does not reach the desired relief depth d (hatched part b) engraving embodiment. 这样,因为经粗雕刻工序雕刻过的区域通过精密雕刻而被再次雕刻,所以进行精密雕刻工序后的从柔性感光材料10表面开始的雕刻深度d,比粗雕刻的雕刻深度ddc大。 Thus, since the engraved region by step through coarse engraving precision engraving are engraved again, the engraving depth d from the start of the flexible surface of the photosensitive material 10 after the precision engraving step, the coarse engraving is greater than the engraving depth ddc. 而且,精密雕刻工序中的区域b的雕刻深度ddp与最大雕刻深度dp大致相等。 Further, the region b in the precision engraving process and the engraving depth ddp substantially equal to the maximum engraving depth dp. 另外,在精密雕刻中使激光光源14连续振荡或模拟连续振荡如前述那样。 Further, the laser light source 14 a continuous wave or continuous wave analog manipulation precision engraving as described above.

这样在粗雕刻之后进行精密雕刻的情况也能够形成适当的浮凸形状。 With such precision engraving after the coarse engraving can be formed of an appropriate emboss shape. 这时,在粗雕刻工序中射出的激光束,具有作为第一束径的大的束径,用于以作为第一像素间距的粗雕刻像素间距pc,进行雕刻直到作为第一深度的浮凸深度d,在精密雕刻工序中射出的激光束,具有作为第二束径的小的束径,用于以作为第二像素间距的精密雕刻像素间距pp,进行雕刻直到作为第二深度的最大深度dp。 At this time, in the coarse engraving step emitted laser beam having a large beam diameter as a first beam path, for the coarse engraving pixel pitch pc as a first pixel pitch, until the first engraving depth emboss depth d, the precision engraving step emitted laser beam with a small beam diameter of the second beam diameter for precision engraving pixel pitch in the second pixel pitch pp, until the maximum depth of the second engraving depth dp.

Claims (26)

  1. 1.一种印刷版的制版方法,通过利用从激光光源射出的、对应于图像信号而被调制的激光束扫描记录材料,从而对记录材料的表面进行雕刻而制造印刷版,其特征在于,包括:第一雕刻工序,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度;第二雕刻工序,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 1. A printing plate of the light emitted from the laser light source by using the corresponding laser beam scanning the recording material to the image signal to be modulated, so that the surface of the recording material is engraved printing plate is produced, which is characterized in that it comprises : engraving a first step, a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until the first engraving depth; a second engraving step, a second beam having a diameter larger than the first bundle of the laser beam diameter, larger than a pitch of pixels of the second pixel pitch of the first recording material is irradiated, a second engraving depth deeper than the first until depth.
  2. 2.如权利要求1所述的印刷版的制版方法,其特征在于,上述印刷版是凸版印刷版。 The method of the printing plate as claimed in claim 1, wherein said printing plate is a relief printing plate.
  3. 3.如权利要求2所述的印刷版的制版方法,其特征在于,上述第一深度是网点百分比大致为零的浮凸彼此相邻时的这些浮凸的边界部分的雕刻深度。 The method of the printing plate as claimed in claim 2, wherein said first engraving depth is the depth of the boundary portion of these reliefs of dot percentage is substantially zero when the embossments adjacent to each other.
  4. 4.如权利要求1所述的印刷版的制版方法,其特征在于,上述印刷版是凹版印刷版。 The method of the printing plate as claimed in claim 1, wherein said gravure printing plate is a printing plate.
  5. 5.如权利要求1所述的印刷版的制版方法,其特征在于,根据上述第一像素间距、上述第一深度、记录材料的感度、上述激光光源的功率来确定上述第一雕刻工序的扫描速度。 5. The method of printing plate according to claim 1, characterized in that, according to the first pixel pitch, said first depth, sensitivity of the recording material, and power of the laser light source to determine the first engraving step of scanning speed.
  6. 6.如权利要求1所述的印刷版的制版方法,其特征在于,根据上述第二像素间距、上述第二深度、记录材料的感度、上述激光光源的功率来确定上述第二雕刻工序的扫描速度。 6. The method of printing plate according to claim 1, wherein determining the second scan engraving step According to the second pixel pitch, said second depth, sensitivity of the recording material, and power of the laser light source speed.
  7. 7.如权利要求1所述的印刷版的制版方法,其特征在于,在上述第一雕刻工序中,使上述激光光源连续振荡或者模拟连续振荡,在上述第二雕刻工序中,使上述激光光源脉冲振荡。 7. The method of printing plate according to claim 1, wherein, in the first engraving step, so that the laser light source is a continuous wave continuous wave or analog, in the second engraving step, so that the laser light source pulse oscillation.
  8. 8.如权利要求1所述的印刷版的制版方法,其特征在于,在上述第一雕刻工序中,由调制器调制激光束,在上述第二雕刻工序中,由上述激光光源自身调制激光束。 8. The method of printing plate according to claim 1, wherein, in the first engraving step, the laser beam is modulated by the modulator in said second engraving step, the laser light source by the modulated laser beam itself .
  9. 9.如权利要求1所述的印刷版的制版方法,其特征在于,在上述第二雕刻工序中,将上述记录材料预备加热到比上述第一雕刻工序高的温度。 The method of the printing plate as claimed in claim 1, wherein, in said second engraving step, the recording material is preheated to higher than the temperature of the first engraving step.
  10. 10.一种印刷版的制版方法,通过利用从激光光源射出的、对应于图像信号而被调制的激光束扫描记录材料,从而对记录材料的表面进行雕刻而制造印刷版,其特征在于,包括:第一雕刻工序,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度;第二雕刻工序,使用具有比上述第一束径小的第二束径的激光束,以比上述第一像素间距小的第二像素间距照射记录材料,进行雕刻直到比上述第一深度浅的第二深度。 10. A printing plate of the light emitted from the laser light source by using the corresponding laser beam scanning the recording material to the image signal to be modulated, so that the surface of the recording material is engraved printing plate is produced, which is characterized in that it comprises : engraving a first step, a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until the first engraving depth; a second engraving step, having a diameter smaller than the first bundle of the second beam laser beam diameter, smaller than the first pixel to a second pixel pitch pitch irradiating the recording material, until a second engraving depth shallower than the first depth.
  11. 11.如权利要求10所述的印刷版的制版方法,其特征在于,上述印刷版是凸版印刷版。 11. The method of printing plate according to claim 10, wherein said printing plate is a relief printing plate.
  12. 12.如权利要求11所述的印刷版的制版方法,其特征在于,上述第二深度是网点百分比大致为零的浮凸彼此相邻时的这些浮凸的边界部分的雕刻深度。 12. The printing plate of claim 11, wherein said second engraving depth is the depth of the boundary portion in relief when substantially zero dot percentage embossed adjacent to each other.
  13. 13.如权利要求10所述的印刷版的制版方法,其特征在于,上述印刷版是凹版印刷版。 13. The method of printing plate according to claim 10, wherein said gravure printing plate is a printing plate.
  14. 14.如权利要求10所述的印刷版的制版方法,其特征在于,根据上述第一像素间距、上述第一深度、记录材料的感度、上述激光光源的功率来确定上述第一雕刻工序的扫描速度。 14. The method of printing plate according to claim 10, characterized in that, according to the first pixel pitch, said first depth, sensitivity of the recording material, and power of the laser light source to determine the first engraving step of scanning speed.
  15. 15.如权利要求10所述的印刷版的制版方法,其特征在于,根据上述第二像素间距、上述第二深度、记录材料的感度、上述激光光源的功率来确定上述第二雕刻工序的扫描速度。 15. The method of printing plate according to claim 10, characterized in that, according to the second pixel pitch, said second depth, sensitivity of the recording material, and power of the laser light source is scanned to determine the second engraving step speed.
  16. 16.如权利要求10所述的印刷版的制版方法,其特征在于,在上述第一雕刻工序中,使上述激光光源脉冲振荡,在上述第二雕刻工序中,使上述激光光源连续振荡或者模拟连续振荡。 16. The method of printing plate according to claim 10, wherein, in the first engraving step, so that the pulsed laser light source, in the second engraving step, so that the laser light source or a continuous wave analog continuous oscillation.
  17. 17.如权利要求10所述的印刷版的制版方法,其特征在于,在上述第一雕刻工序中,由上述激光光源自身调制激光束,在上述第二雕刻工序中,由调制器调制激光束。 17. The method of printing plate according to claim 10, wherein, in the first engraving step, the laser light source itself by the laser beam is modulated, in the second engraving step, the laser beam is modulated by the modulator .
  18. 18.如权利要求10所述的印刷版的制版方法,其特征在于,在上述第一雕刻工序中,将上述记录材料预备加热到比上述第二雕刻工序高的温度。 18. The method of printing plate according to claim 10, wherein, in the first engraving step, the recording material is higher than the preliminary heating temperature of the second engraving step.
  19. 19.一种印刷版的制版装置,通过利用从激光光源射出的激光束对记录材料进行扫描,从而对记录材料的表面进行雕刻而制造印刷版,其特征在于,包括:调制器,其用于调制从上述激光光源射出的激光束;记录鼓,在其外周部安装有记录材料;旋转电机,其使上述记录鼓旋转;记录光头,其以能够沿着与上述记录鼓的轴心平行的方向移动的形式构成,对安装在上述记录鼓的外周部上的记录材料照射从上述激光光源射出的激光束;移动电机,其用于使上述记录光头沿着与上述记录鼓的轴心平行的方向移动;束径变更机构,其改变从上述记录光头射出的激光束的束径;控制部,其通过控制上述调制器、上述旋转电机、上述移动电机以及上述束径变更机构,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,使用具 19. A printing plate device, by using a laser beam emitted from the laser light source scans the recording material, thereby to engrave the surface of the recording material is a printing plate is produced, which is characterized in that, comprising: a modulator for modulates the laser beam emitted from the laser light source; recording drum, is mounted in the outer circumferential portion of the recording material; rotating electric machine rotating said recording drum; a recording head, which can be parallel to a direction along the axis of the recording drum to form of a mobile structure, irradiating the recording material mounted on the outer circumferential portion of the recording drum from the laser beam emitted from the laser light source; moving motor for moving the recording head along an axis parallel to the direction of the recording drum movement; beam diameter changing mechanism which changes a beam diameter of light emitted from the optical head of the recording laser beam; a control unit, by controlling the modulator, the rotary electric machine, said moving motor and said beam diameter changing mechanism, having a first beam the diameter of the laser beam at a first pixel pitch irradiating the recording material, until after the first engraving depth, with the use of 比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 A bundle of large diameter than the first laser beam of the second beam path, a pitch greater than the first pixels of the second pixel pitch irradiating the recording material, until the second depth deeper engraving than the first depth.
  20. 20.如权利要求19所述的印刷版的制版装置,其特征在于,还具有使上述激光光源脉冲振荡及连续振荡的激光光源控制部,上述控制部,在使上述激光光源连续振荡或模拟连续振荡的状态下,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,在使上述激光光源脉冲振荡的状态下,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 20. The printing plate of the apparatus according to claim 19, wherein the laser light source further has a pulsed laser source and a control portion continuous oscillation, the control unit, so that the laser light source in a continuous wave or a quasi-continuous oscillation state, a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until after the first engraving depth, so that the laser light source in a pulsed state, a first beam having the above ratio the large diameter of the beam diameter of the second laser beam, at a pitch larger than that of the first pixels of the second pixel pitch irradiating the recording material, until the second depth deeper engraving than the first depth.
  21. 21.如权利要求19所述的印刷版的制版装置,其特征在于,还具有:用于调制从上述激光光源射出的激光束的调制器;使上述调制器在可调制激光束的调制位置和退避位置之间移动的调制器移动机构,上述控制部,在将上述调制器配置于调制位置的状态下,使用具有第一束径的激光束,通过由上述调制器调制后的激光束而以第一像素间距照射记录材料,进行雕刻直到第一深度之后,在将上述调制器配置于退避位置的状态下,使用具有比上述第一束径大的第二束径的激光束,通过由上述激光光源自身调制后的激光束而以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 21. The printing plate of the apparatus according to claim 19, wherein, further comprising: a modulator for modulating a laser beam emitted from the laser light source; contacting said modulator modulating the position of the laser beam may be modulated and modulator moving mechanism between a retracted position, said control unit, when the modulator is configured to modulate the above-described position, a laser beam having a first beam diameter, and by the laser beam to the modulator modulates the a first pixel pitch of the recording material is irradiated, a laser beam until after the first engraving depth, at the said modulator disposed in the retracted position, a bundle having a diameter larger than the diameter of the second beam, by the above-described a laser beam after the laser light source itself modulated at a pitch larger than that of the first pixels of the second pixel pitch irradiating the recording material, until the second depth deeper engraving than the first depth.
  22. 22.如权利要求19所述的印刷版的制版装置,其特征在于,还具有对安装在上述记录鼓上的记录材料进行加热的加热机构,上述控制部,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,在由上述加热机构预备加热了记录材料的状态下,使用具有比上述第一束径大的第二束径的激光束,以比上述第一像素间距大的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 22. The printing plate of the apparatus according to claim 19, wherein further comprising means for heating the recording material mounted on the recording drum heats, and the control unit, having a first beam diameter of the laser beam at a first pixel pitch irradiating the recording material, until after the first engraving depth, at the preliminary heating means by the recording material is heated state, a laser beam having a diameter larger than the first bundle of the second beam path, at a pitch larger than that of the first pixels of the second pixel pitch irradiating the recording material, until a second engraving depth deeper than the first depth.
  23. 23.一种印刷版的制版装置,通过利用从激光光源射出的激光束对记录材料进行扫描,从而对记录材料的表面进行雕刻而制造印刷版,其特征在于,包括:调制器,其用于调制从上述激光光源射出的激光束;记录鼓,在其外周部安装有记录材料;旋转电机,其使上述记录鼓旋转;记录光头,其以能够沿着与上述记录鼓的轴心平行的方向移动的形式构成,对安装在上述记录鼓的外周部上的记录材料照射从上述激光光源射出的激光束;移动电机,其用于使上述记录光头沿着与上述记录鼓的轴心平行的方向移动;束径变更机构,其改变从上述记录光头射出的激光束的束径;控制部,其通过控制上述调制器、上述旋转电机、上述移动电机以及上述束径变更机构,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,使用具 23. A printing plate device, by using a laser beam emitted from the laser light source scans the recording material, thereby to engrave the surface of the recording material is a printing plate is produced, which is characterized in that, comprising: a modulator for modulates the laser beam emitted from the laser light source; recording drum, is mounted in the outer circumferential portion of the recording material; rotating electric machine rotating said recording drum; a recording head, which can be parallel to a direction along the axis of the recording drum to form of a mobile structure, irradiating the recording material mounted on the outer circumferential portion of the recording drum from the laser beam emitted from the laser light source; moving motor for moving the recording head along an axis parallel to the direction of the recording drum movement; beam diameter changing mechanism which changes a beam diameter of light emitted from the optical head of the recording laser beam; a control unit, by controlling the modulator, the rotary electric machine, said moving motor and said beam diameter changing mechanism, having a first beam the diameter of the laser beam at a first pixel pitch irradiating the recording material, until after the first engraving depth, with the use of 比上述第一束径小的第二束径的激光束,以比上述第一像素间距小的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 A bundle of smaller diameter than the first laser beam of the second beam path to the first pixel pitch smaller than the pixel pitch of the second irradiating a recording material, until the second depth deeper engraving than the first depth.
  24. 24.如权利要求23所述的印刷版的制版装置,其特征在于,还具有使上述激光光源脉冲振荡及连续振荡的激光光源控制部,上述控制部,在使上述激光光源脉冲振荡的状态下,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,在使上述激光光源连续振荡或模拟连续振荡的状态下,使用具有比上述第一束径小的第二束径的激光束,以比上述第一像素间距小的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 24. The printing plate of the apparatus according to claim 23, wherein the laser light source further has a pulsed laser source and a control portion continuous oscillation, the control unit, so that the laser light source in a state where the pulse oscillation , a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until after the first engraving depth, so that the laser light source in a continuous wave or quasi-continuous oscillation state, a first beam having the above ratio a small diameter laser beam of the second beam path to the first pixel pitch smaller than the pixel pitch of the second irradiating a recording material, until the second depth deeper engraving than the first depth.
  25. 25.如权利要求23所述的印刷版的制版装置,其特征在于,还具有使上述调制器在可调制激光束的调制位置和退避位置之间移动的调制器移动机构,上述控制部,在将上述调制器配置于上述退避位置的状态下,使用具有第一束径的激光束,通过由上述激光光源自身调制后的激光束而以第一像素间距照射记录材料,进行雕刻直到第一深度之后,在将上述调制器配置于调制位置的状态下,使用具有比上述第一束径小的第二束径的激光束,通过由上述调制器调制后的激光束而以比上述第一像素间距小的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 25. The printing plate of the apparatus according to claim 23, characterized by further having a moving mechanism between the modulator so that the modulator can modulate modulated laser beam position and a retracted position, said control unit, in under the said modulator disposed in the retracted position, a laser beam having a first beam diameter, by a laser beam by the laser light source itself after modulated at a first pixel pitch irradiating the recording material, until a first engraving depth Thereafter, the modulator is arranged above the modulation position, a bundle having a diameter smaller than the first beam diameter of the second laser beam, the laser beam by the modulator modulates the rear than the first pixel and a second pixel pitch smaller pitch irradiating the recording material, until a second engraving depth deeper than the first depth.
  26. 26.如权利要求23所述的印刷版的制版装置,其特征在于,还具有对安装在上述记录鼓上的记录材料进行加热的加热机构,上述控制部,在由上述加热机构高温预备加热了记录材料的状态下,使用具有第一束径的激光束,以第一像素间距照射记录材料,进行雕刻直到第一深度之后,对比未由上述加热机构进行加热温度低的记录材料,使用具有比上述第一束径小的第二束径的激光束,以比上述第一像素间距小的第二像素间距照射记录材料,进行雕刻直到比上述第一深度深的第二深度。 26. The printing plate of the apparatus according to claim 23, wherein further comprising means for heating the recording material mounted on the recording drum heats, and the control unit, in a preliminary heating means by the high-temperature heating of the the state of the recording material, using a laser beam having a first beam diameter at a first pixel pitch irradiating the recording material, until after the first engraving depth, contrast is not low heating temperature of the recording material by the heating means, having a ratio of the first bundle of the second beam diameter of a small diameter laser beam, the pixel pitch smaller than the first pixel pitch of the second irradiating a recording material, until the second depth deeper engraving than the first depth.
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