CN1314539C - 宽格式纸宽喷墨打印机 - Google Patents

宽格式纸宽喷墨打印机 Download PDF

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Publication number
CN1314539C
CN1314539C CNB02828741XA CN02828741A CN1314539C CN 1314539 C CN1314539 C CN 1314539C CN B02828741X A CNB02828741X A CN B02828741XA CN 02828741 A CN02828741 A CN 02828741A CN 1314539 C CN1314539 C CN 1314539C
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CN
China
Prior art keywords
print
print head
head chip
nozzle arrangement
bearing
Prior art date
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Expired - Fee Related
Application number
CNB02828741XA
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English (en)
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CN1625473A (zh
Inventor
卡·西尔弗布鲁克
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Memjet Technology Ltd
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Silverbrook Research Pty Ltd
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Publication of CN1625473A publication Critical patent/CN1625473A/zh
Application granted granted Critical
Publication of CN1314539C publication Critical patent/CN1314539C/zh
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • B41J2/00—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed
    • B41J2/005—Typewriters or selective printing mechanisms characterised by the printing or marking process for which they are designed characterised by bringing liquid or particles selectively into contact with a printing material
    • B41J2/01—Ink jet
    • B41J2/135—Nozzles
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    • B41J2/15—Arrangement thereof for serial printing
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    • B41J2/04—Ink jet characterised by the jet generation process generating single droplets or particles on demand
    • B41J2002/041—Electromagnetic transducer
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/19—Assembling head units
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/20—Modules
    • 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
    • B41J2202/00—Embodiments of or processes related to ink-jet or thermal heads
    • B41J2202/01—Embodiments of or processes related to ink-jet heads
    • B41J2202/21—Line printing

Abstract

一种用于宽格式纸宽喷墨打印机的打印组件，所述打印组件包括一个长形支座，所述长形支座可以安装在打印机的支承结构上并且布置得与打印机的一个平台有一个工作的距离。若干布置在所述支座上的打印头芯片，所述打印头芯片以一定数量设置并且构成得使打印芯片界定一个上述支座与上述平台之间的打印区，所述打印区有至少914mm的长度。每个打印头芯片都是内含多个喷嘴排列的类型，每个喷嘴排列是微电机械系统形式的，以达到从喷嘴排列喷墨。控制电路布置在所述支座上并且工作地连接打印头芯片，以控制打印头芯片工作。

Description

宽格式纸宽喷墨打印机
技术领域
本发明涉及一种宽格式纸宽喷墨打印机。更加特别地，本发明涉及一种宽格式纸宽喷墨打印机的打印组件并且涉及一种宽格式纸宽喷墨打印机。
背景技术
大容量高分辨率打印是宽格式打印机制造厂商一定时间追求的目标。公众可购到宽格式打印机多年了。流行的宽格式打印机的示例是惠普(HP)1000/5000、HP3000/3500，Epson7000/1000以及许多其它型号。
这些打印机都有在打印介质上喷墨时沿打印介质横向移动的横移打印头。本申请人认为这些打印机都有内在缺点，特别是企图利用这些打印机设计为达到高分辨率地更快速度打印时。
实现高打印速度的核心问题是获得能够以适当的速度产生需要数量的墨点的打印头的能力。而且为了实现精确的打印，希望在尽可能小的打印周期中，并且优选地在单个周期中，产生图像的条或者带。因此，企图达到高打印速度时使用横移打印头是不适宜的，并且要求内装适当数量的喷墨嘴的单个打印头。
也称作泡式打印头的热打印头以及压电打印头已经使用一些时间了。这些打印头都有过度的热积聚和过度的能耗的问题，因此本发明人发现它们不适合用于纸宽结构。与这些打印头相关联的一些缺点在美国专利申请09/625,504号中指出。
本申请人研发了一种能够产生分辨率高达1600dpi的图象的打印头芯片。这些芯片使用集成电路制造技术制造。所述芯片的细节在上述申请和专利中提供。本申请人认为这些打印头芯片极为适用于宽格式打印机。其理由是，由于在单个芯片中要求大数量的喷嘴，并且由于这样的芯片可以用极高的周期率驱动，这样的芯片以极高的速度工作。
为了达到在宽格式打印机中有效地利用这种打印头芯片，本申请人面临过许多困难。本发明人认识到的一个特殊困难是有效地控制若干这种打印头芯片以实现准确的打印。这种控制必须包含使用能够以与若干上述打印头芯片可达到的物理打印速度相对应的速度处理所存储的图像的高效图像处理工具。
制造宽格式打印机所面临的另一个困难是与热积聚相关联的问题。这往往可引起对昂贵的排热装置的需要，这增加了打印机的复杂性。
发明内容
本发明的目的在于实现产生具有高分辨率的图象的打印头在宽格式打印机中的有效应用。
根据本发明第一方面，提供一种用于宽格式纸宽喷墨打印机的打印组件，所述打印组件包含
一个长形支座，所述长形支座可以安装在打印机的支承结构上并且布置得与打印机的一个平台有一个工作的距离；
若干布置在所述支座上的打印头芯片，所述打印头芯片以一定数量设置并且构成得使打印芯片界定一个上述支座与上述平台之间的打印区，所述打印区有至少914mm(36英寸)的长度，每个打印头芯片都是内含多个喷嘴排列的类型，每个喷嘴排列是微电机械系统的形式的，以达到从喷嘴排列喷墨；以及
控制电路，所述控制电路布置在所述支座上并且工作地连接打印头芯片，以控制打印头芯片工作。
根据本发明的第二方面，提供一种宽格式纸宽喷墨打印机，所述宽格式纸宽喷墨打印机包含
一个支承结构；
一个置于所述支承结构中的平台；
一个工作上相对于所述平台布置的打印组件，所述打印组件包含
一个长形支座，所述长形支座可以安装在打印机的支承结构上并且布置得与打印机的一个平台有一个工作的距离；
若干布置在所述支座上的打印头芯片，所述打印头芯片以一定数量设置并且构成得使打印芯片界定一个上述支座与上述平台之间的打印区，所述打印区有至少914mm(36英寸)的长度，每个打印头芯片都是内含多个喷嘴排列的类型，每个喷嘴排列是微电机械系统的形式的，以达到从喷嘴排列喷墨；和
控制电路，所述控制电路布置在所述支座上并且工作地连接打印头芯片，以控制打印头芯片工作；以及
一个布置在所述支承结构上的馈给机构，用于经打印区馈给打印介质。
由于在单个芯片中具备了大量喷嘴排列，并且由于这样的芯片可以用极高的周期率驱动，进而芯片以极高的速度工作，进行打印，从而实现产生具有高分辨率的图象的打印头在宽格式打印机中的有效应用。
附图说明
下文参照附图以举例的方式说明本发明。下文的说明不打算限制以上本发明的范围。在附图中：
图1示出根据本发明打印机的、也根据本发明打印组件的打印机构的部分的三维示意图；
图2示出图1所示打印机构的前视图；
图3示出图1所示打印机构的后视图；
图4示出打印机的三维外视图；
图5示出打印机的工作部分的三维示意图；
图6示出打印机的分解示意图；
图7示出安装所述打印组件的打印机的部分侧剖视图；
图8示出所述打印机构的工作部分的分解图；
图9示出打印机构的工作部分的横剖视图；
图10示出打印机的打印引掣控制器的高层面方框图；
图11示出所述打印引掣控制器的页扩大单元的扩展方框图；
图12示出含有页扩大单元的图像处理装置的方框图；
图13示出打印机的打印组件的打印头芯片部分的三维示意图，示出打印头芯片的一个喷嘴排列；而
图14示出内装一个打印芯片的一个打印头模块的三维示意图。
具体实施方式
在图4中，标号10总体上指代一个根据本发明的打印机。
打印机10具有一个在一个基底上方支承一个也是根据本发明的打印组件14的支承结构12。支承结构12包括一对间隔开的支脚16和各从每个支脚16伸出的一个支腿18。打印组件14安装在支腿18上跨越支腿18。
介质盘20置于支腿18之间。介质盘构成得储存诸如纸22的适当的打印介质。
纸22从以介质辊166形式的一个介质馈给机构经打印组件14馈给，并且馈给到卷取轴24上。一个电子盒26也置于支腿18之间以封装下文说明的各种电子部件。
打印组件14包括一个带有一个手柄30的盖28，以及一个前罩32。盖28和前罩32置于一对端部模件34之间。
打印组件14还包括一个有触摸屏导航的彩色TFTLCD36。还设有一个停止钮38以确保用户能够停止打印组件14的工作。
打印组件14以及其各种部件进一步详细地示于其余的图中。
在图1至图3中，标号40总体上指代打印组件14的打印机构。如从图中可见，所述打印机构40是分段的。特别是，打印机构40包括一个根据本发明的图象处理装置，所述图象处理装置包括用对应的接插件块44相互连接的九个印刷电路板(PCB)42。
打印机构40还包括一个具有七十二个打印头模块46的打印头41。每个PCB42构成得控制八个打印头模块46。因此设有九个PCB42。打印头46在下文中详细地说明。
每个PCB42包括一个打印引掣控制器(PEC)48。PEC48也在下文中详细地说明。
每个PCB42还包括存储器芯片形式，特别是46Mbit的外DRAM芯片50形式的一个存储寄存装置。DRAM芯片50以下文说明的方式与PEC48配合。
而且，每个PCB42包括一个质量认证(QA)芯片52。适用的QA芯片在以上所引的美国专利申请09/113,053号中指出，因此不在本说明书中说明。除了确保打印机10使用的打印介质的质量之类的其它功能以外，QA芯片52还起禁止以美国专利申请09/113,053号中说明的方式末经授权地重灌打印油墨的作用。
最末端的PCG42包括一个串行接插件54，所述串行接插件54使串行数据线56能够连接到PCB42上。
每个PCB42用一个挠性PCB58连接到其相关联的打印头模块46上。
打印机构40包括一个在一对侧模块61之间延伸的金属机架60，所述一对侧模块61置于端部模件34中。所述PCB42安装在机架60上。机架60具有一个总体上U字形的截面。一个镍铁合金的槽板62置于机架60上。
一个塑料的机架模件64置于机架60和槽板62的外侧。每个PCB42都安装在机架模件64上。
机架模件64界定一对在机架模件64的外侧上的凹陷66。凹陷66伸展一个机架模件64的长度。在每个凹陷66中各布置一个总线汇流条68。总线汇流条68构成得向PCB42提供电能。
一个储墨容器组件70置于镍铁合金槽板62中。储墨容器组件70包括一个墨分配装置72。每个打印头模块46位于各自的墨分配装置72上。特别地，每个打印头模块46都可拆卸地安装在其墨分配装置72上，以在需要时便于拆卸和更换。
储墨容器组件70包括多个储墨容器模件76。每个储墨容器模件76对应一个相关联的打印头模块46。储墨容器模件76端对端地沿镍铁合金槽板62布置在其内。每个储墨容器模件76确定多个细长的墨槽74，每个墨槽容纳不同颜色的油墨。从而，有效的细长墨槽延伸一个镍铁合金槽板62的长度。
一个端帽模件78置于最末端的储墨容器模件76上。所述端帽模件78具有多个确定于其上的连接器80，并且当端帽模件78置于所述最末端的储墨容器模件76之上时与对应的墨槽74对齐。连接器80可以连接到一个墨软管连接器82上。所述墨软管连接器82转而连接到多个墨软管84的每一个上。从而每个软管84与对应的墨槽74液体连通。每个软管84用特定颜色的油墨供给储墨容器组件70。例如，软管84可以分别地载运青(C)、洋红(M)、黄(Y)、和黑(K)颜色的油墨。在此情况下，设有四个软管84。还有，每个储墨容器模件76确定四个墨槽74。变通地，软管84可以分别地载运青(C)、洋红(M)、黄(Y)、红(R)、绿(G)和蓝颜色的油墨。在此情况下，设有六个软管84。而且，然后每个储墨容器模件76确定六个墨槽74。取代于六种不同颜色的油墨，六个软管84可以载运CMYK和红外(IR)墨和用于高速打印的一种定色剂(F)，使墨可以快速干燥。
每个软管84连接到对应的墨容器86(图5)上，从而每个软管84连接在墨容器86和一个特定的墨槽74之间。软管84用图1中所示的三通管连接器94连接到其相应的容器86上。
打印组件14包括对应于相应的打印头模块46的多个加盖装置88。每个加盖装置88可以在一个操作位置与一个不操作位置之间移位，在所述操作位置，它起盖住其相应的打印模块46以防止墨干燥的作用，在所述不操作位置，油墨可以从打印头模块46喷出。一个凸轮轴90置于机架60之中。一个移动构件92相互连接凸轮轴90和所述加盖装置88，从而凸轮轴90的旋转运动导致加盖装置88在其操作位置和不操作位置之间往复运动。
凸轮轴90用一个在图5中用96总体地指代的适当的马达驱动。
打印组件14的进一步细节示于图7中。如图所示，前罩32、盖28和后罩98一起确定一个打印组件14的壳100。
多个墨盒102布置在盖28下面。每个墨盒102储存上述油墨之一。每个墨盒102布置在一对夹具104之间，从而它可以在需要时更换。当把墨盒102收容在夹具104之间时，每个墨盒102和一个相应的储墨容器86相互地液体连通。
上平台106和下平台108形式的一对平台置于壳100内。设有一个上主辊110和一个下主辊112形式的一对间隔主辊，用于经过打印组件14移动纸22。上辊110布置在平台106、108的上端，而下辊布置在平台106、108之间。辊110、112构成用于相继地在下平台108的内表面和上平台106的外表面上驱动纸22的片。从而，在下辊布置在纸22的上向移动的部分和下向移动的部分之间时，纸22在上辊110上通过。
一个刷子114枢转地安置在壳100的116处。刷子114具有与上主辊110相应的弧形横向轮廓。刷114布置在壳100中从而纸22可以在刷子114和壳100之间通过。
一个压紧辊118布置在刷子114的下游用于支靠上主辊110。从而，当从刷子114与上主辊110之间移动纸22时，压紧辊118持定纸22不作横向运动。
上平台106确定一个上打印区120和一个下切割区122。在上打印区120和下切割区122之间确定一个间隙124。多个带尖齿的轮126部分地经间隙126收入，用于接合纸22和下主辊122。一个横臂128工作地相对带尖齿的轮126布置，以把带尖齿的轮126保留在适当的位置。带尖齿的轮126和压紧辊118构形得当纸22在上平台106的打印区120上方通过时在纸22中建立适当的张力。
机架60和槽板62布置在上平台106的打印区120的上方。机架60和槽板62连接到一个移位机构129上，从而当需要时可以把机架60和槽板62从打印区120移开。特别地，机架60和槽板62可以在一个操作位置与一个不操作位置之间位移，在所述操作位置，打印头模块46与打印区120之间有一个适于打印的距离，在所述不操作位置，可以从打印区120松开纸22。
机架60和槽板62用适当的金属件130连接到打印辊118。而且，机架60和槽板62连接到横臂128上。因此，当操作位移机构129时，压紧辊118和带尖齿的轮126与机架60和槽板62一起从上平台106移动开。
位移机构129包括一个凸轮轴132和一个推杆134。推杆134连接到机架60和槽板62，从而当凸轮轴132旋转时，一起朝向和离开上平台106地移动机架60和槽板62。
上空转辊136可旋转地安装在上平台106上方，从而使纸22容置在上平台106和上空转辊136之间。
一个下回弹空转辊138安装在下平台108上，使得能够部分地容置在一个界定在下平台108中的间隙140中。回弹空转辊138构成并且布置得压靠在下主辊112上。从而，纸22的上向运动部分紧夹在下主辊112和回弹空转辊138之间，并且在其间通过。
打印组件14包括一个在壳100中安装在上平台106的切割区122上方的切割机构142。该切割机构包括一个切刀146，所述切刀146垂直于纸22地对纸22进行切割。所述切割机构142包括一个光传感器144，从而当切刀146达到切割行程终端时可以停止切刀146。切割区122界定一个切割结构148，所述切割结构148与切刀146配合以方便切纸22。
如从图6中可见，打印组件14包括一个空气推进器150和一个用于驱动该空气推进器150的马达152。空气推进器150在壳100内产生作冷却用的气流。一个空气过滤器153也布置在壳100中，以过滤流经壳100的空气。空气推进器150还起产生气流在充分的程度上把打印头模块46上的尘土聚积降到最小的作用。
如图6详示，主辊110、112连接到安装在一个支架156上的一个变速箱154上。变速箱154和支架156布置在一个支腿18上并且用一个端部模件34盖住。从而，主辊110、112起经打印组件14驱动纸22的作用。
一个打印头支架157置于壳100中并且在支腿18之间延伸。打印头支架157为机架60和槽板62提供一个支承结构。打印头支架157还为上空转辊136提供一个支承结构。
壳100形状做得界定一个开口158，用作纸22进出打印组件14的通道。馈给辊162可旋转地安装在一个延伸在支腿18之间的系杆160上。馈给辊162布置得使当向打印组件14中馈纸时使纸22在馈给辊162上方通过。系杆160还起一种对打印机10提供结构上的刚性的作用。
导出辊164可旋转地安装在上平台106上。导出辊164布置使得当从打印组件馈出纸22时，纸22经导出辊164上方通过。
介质辊166和卷取轴24分别用介质辊驱动马达168和卷取轴驱动马达170驱动(参见图5)。
打印机10包括一个置于电子盒26中的电源单元172。电源单元172构成得既可以用110V供电也可以用220V供电。而且，电源单元172还构成得可以从电源单元172给出高达90安培的电流。电源单元172由电源线173与诸如各种驱动马达的打印机10的各种部件相连，以供给这些部分所要求的工作电能，。
打印机10包括一个ATX母板174，所述ATX母板174也置于电子盒26中。一个打印头接口卡176安装在母板174上。打印头接口卡176用适当的数据线178连接到九个PCB42上。从而从母板174提供到接口卡176的常规打印数据可以转换成适当的形式，以用各个PCB42读取。
打印头10包括一个硬驱单元180。常规地，硬驱单元180可以具有40G字节的容量。这便于存储整个要打印的图像。硬驱单元180用常规的方式连接到母板174上。硬驱单元180是常规的硬驱单元，并且因此能够用任何型号的格式存储图象，譬如众所公知的JPEG格式。从硬驱单元180读取图象数据的方式也是常规的。如下文提出，由于在本发明中利用的打印头技术，图象的打印也数字控制。因此经打印头接口卡176从硬驱单元180向PCB42的图象数据的转移可以不需要重要数据变换地进行，特别是，不需要数字—模拟信号转换。
接口卡176还连接到马达和LCD控制器PCB182，以控制各种驱动马达和TFTLCD的工作。这种控制的细节在以上所引的申请中指出，因此不在本说明书中说明。马达和LCD控制器PCB182连接到截止开关184，所述截止开关184转而连接到停止钮38上，从而可以停止打印机10的工作。
如在图14中可见，打印头模块46可以各包括一个打印头芯片186。所述打印头芯片186可以是前文引述的申请/专利中所述任何打印头芯片的形式。每个打印头模块46包括一个支座187，打印头芯片186置于其中。支座187确定一个用于与打印头芯片186相关联的挠性PCB58的适当的连接区。图13示出一个适用于打印机10中的打印头芯片186的部分的示意图。每个打印头模块46都包括公知的片上准标258。片上准标258基本上是标志形式，用于方便准确地把打印头模块46对齐在打印组件14中。
打印头芯片186在前文引述的美国专利申请09/112,767中详细地说明，从而不在本说明书中详细地说明。然而，简而言之，芯片186包括一个晶片基底188。一个CMOS驱动电路层190置于晶片基底188之上并且连接到挠性PCB58上。
多个喷嘴排列210置于CMOS驱动电路层190之上。为了方便，在图13中示出一个这样的喷嘴排列210。打印头芯片186包含在晶片基底188上多重复制的喷嘴排列210。如在前文引述的申请和专利中所述，打印头芯片186是集成电路制造技术的产品。复制部件以得到产品是这种制造技术的公知特征。因此，芯片制造业的领域内普通技术人员可以轻易理解打印头芯片186。
每个喷嘴排列210都包括一个热弯曲致动器192，所述热弯曲致动器192置于CMOS层190上以从CMOS层190接收致动信号。特别地，热弯曲致动器192包括一个支柱194，所述支柱194安装在CMOS层190上以从CMOS层190伸出。热弯曲致动器192包括一个固定到支柱194并从支柱194伸出的致动器臂196。致动器臂196包括一个电热电路形式的加热层198，所述电热电路由能够作为加热膨胀的结果而在MEMS的规模上做有用功的材料制造。加热层198置于层200上，层200由热膨胀系数小于确定电热电路的加热层198的热膨胀系数的材料制造。加热层198直接在层200和基底188上布置，从而当电流流经加热层198时，致动器臂196从基底188弯曲离开。
喷嘴室壁202置于CMOS层190上。一个顶壁204置于喷嘴壁202上。喷嘴室壁202和顶壁204确定一个喷嘴室206。顶壁204界定一个喷射端口208，在使用中，墨从该喷射端口208喷出。
一个叶片构件212安装在致动器臂196上，以伸入进喷嘴室206中。叶片构件212构形和布置在喷嘴室206中，从而，在致动器臂196如前文所述位移时，油墨从喷嘴室206喷出。
致动器臂196经支柱194连接到CMOS层190，从而加热层198能够从CMOS层190接收电信号。
如在图3和图9中可见，打印头芯片186每个都对沿打印区120纵向的直线成角度地布置。这方便了在打印头芯片186的邻接端部的重叠测量以保证打印连续性。
从前文引述的美国专利申请和专利可以看出，包括上述打印头芯片的纸宽打印头可以内装达84000个喷嘴排列。因此，在使用打印头芯片186时，打印组件14可能具有多达200000个喷嘴排列以上。因此，可以在打印区120在纸22上打印200000个点以上。在一个特定示例中，七十二个打印头芯片186用552960个喷嘴排列210提供57.6英寸的打印宽度。
每个芯片186的喷嘴排列210以交错的方式并排布置。因此可以用打印头芯片186实现真正的1600dpi的打印。
因此，每个打印头芯片186包括7680个喷嘴排列210。每个喷嘴排列210都由PCB42独立控制，以在需要时喷射1微微升墨滴。使用的集成电路制造技术以在前文引述的申请和专利中充分说明了的超大规模集成(VLSI)技术为基础，。作为使用该制造技术的结果，每个喷嘴排列210可以是小到32微米宽。这使每个打印头芯片186具有小到21mm2的表面面积。
每个喷嘴排列210的特征是使得它能够用其相关联的PEC48以达80KHz的周期率驱动。这使之能够每秒打印达216亿个墨滴，这以1600dpi提供每小时三万五千平方英尺。
每个打印头芯片186用挠性PCB58连接到其相关的PCB42。因此，每个挠性PCB58连接到其相关的打印头芯片186的CMOS层190。
每个PCB48都是一个页再现引擎应用专用集成电路(ASIC)，所述集成电路从打印头接口176接收与压缩的页图象相关的输入数据。PCE48产生达六通道双层面点数据的解压的页图像作为输出。应当理解，在此示例中，每个PEC48与八个打印头芯片186通信。然而，每个PEC48能够与多达十六个这样的打印头芯片186通信。特别地，每个PEC48可以以15000行/秒的速度寻址达六个彩色通道中的十六个打印头芯片。因此，每个PEC48使12.8英寸打印头宽度能够用于A3、A4和信函纸的全幅打印。
每个PEC48都是不认彩色空间的。这意味着PEC48可以以任何颜色接受打印数据。尽管每个PEC48可以接受X是供选择的第四通道的作为CMYX或者RGBX的同色调数据，它还可以接受任何打印彩色空间中的同色调数据。因此，每个PEC48用于确定一个用于从输入通道向输出通道任意映射的机构。PEC48还构成得结合点以进行油墨优化，以及在任何数量的其它通道的基础上产生通道。在此示例中，数据输入典型地基于用于同色调打印的CMYK通道，基于用于双层面输入的K通道、固定剂通道，以及供选择的其它墨通道。PEC48还构成用于产生快速打印应用的固定剂通道。
每个PEC48还构成得不认分辨率。这意味着每个PEC48简单地通过各种比例系数提供输入分辨率与输出分辨率之间的映射。在此示例中，期望的输出分辨率是1600dpi。然而，对此作用，PEC不存储任何数据。
每个PEC48还构成得不认页长。每个PEC48一次操作一个打印带，而一页可以有任何数量的带。因此一“页”可以具有任何合理的长度。
每个PEC48确定一个接口，从而它可以如本发明所要求地与其它PEC48同步。这使之可能有同时复式打印A3/A4/信纸的两个PEC方案。应当理解，把同步功能与局部页再现结合使之可以使多个PEC能够结合用于其它打印要求，包括同时复式打印、宽格式打印、商务打印、专业高同色调分辨率打印，以及要求六个墨通道以上的打印应用。
下表列出每个PEC48的特征及其相关联的长处。
表1. PEC的特征和长处
  特征  长处
  硬件中优化的打印结构  用台式PC进行的30ppm全页光刻质量的彩色打印
  0.18微米CMOS(＞3百万个晶体管)  高速度低成本高功能性
  每秒18亿点  极快速的页生成
  以1600dpir每秒打印15,000行  每秒每PEC芯片打印1.1个A4/信纸页
  1个芯片驱动达122,880个喷嘴  低成本的页宽打印机
  1个芯片驱动达6个彩色平面  99％的打印机可以每页使用1个芯片
  精密的内部存储缓冲寄存和超高速缓冲寄存   只需要1个外存储器，导致低成本的系统
  JPEG扩展   PC机发出数据的带宽低打印机中低存储要求
  无损耗的位面扩展   高分辨率文本和行方式，同时PC机发出数据的带宽低(例如通过USB)
  净页标签扩展   产生相互作用的纸
  随机分布的点混色   可供选择地平滑的图像质量没有波纹现象
  6个图像平面硬件合成器   实时图像合成
  失效喷嘴补偿   延长打印头寿命，并且从而降低打印头成本
  不认彩色空间   可能与所有的墨组合及图象源兼容，包括RGB、CMYK、黑点、CIE L*a*b，六色、YcrCbK、sRGB以及其它等等。
  彩色空间转换   高质量/低带宽
  不认计算机接口   可以用USB1、USB2、IEEE1394(高速串行连接总线)、以太网、IEEE1284(并行接口)
  可变纸长   打印任何页长度(达64公里)
  分辨率可级联   打印任何分辨率
  颜色深度可级联   可以使用特定的颜色组，例如六色
  图象尺寸可级联   可以打印任何宽度
  页可级联   打印机可以同时打印正反面
  速度可级联   可以构成超高速打印
  固定剂通道产生   极高速的墨干燥，没有浪费
  内装安全性   可以保护营业收入模式
  可以在逐点的基础上消除颜色不足   减少墨使用
  高速工作不需要字形体   没有字形体替代，也没有缺失字形体
  灵活的打印头构形   在一个芯片型号上可以支持许多打印头构形
  直接驱动MemjetTM打印头   不需要打印驱动器芯片，导致低成本
  判断点准确的墨使用   不再需要墨盒中的物理的墨监测系统
在图10中示出PEC48的方框图。PEC48包括一个高速接口214形式的微控制器接口，经所述高速接口214，外部的微控制器216可以对64Mbit的DRAM芯片50写入。高速接口形成PEC48的数据输入器件部分。
PEC48还包括一个低速串行接口220形式的控制器接口，经所述低速串行接口220，微控制器216可以访问PEC48和DRAM芯片50的寄存器。
PEC48还包括一个页扩展单元(PEU)222形式的页扩展电路，所述的页扩展单元(PEU)222接收相关于压缩的页的数据和把相关于压缩的页的数据再现成相关于双层面的点的数据。还设有一个行下载装置/格式化装置单元224形式的行下载装置和行格式化电路，所述行下载装置/格式化装置单元224对与每个打印头模块46的打印头芯片186直接通信的打印头接口226指定目标的一个给定印刷行的点进行格式化。
可见，PEC48完成三个基本任务。这些任务有：
a)经过低速接口220(或者从外部DRAM芯片50)接收寄存器和DRAM访问指令。
b)经高速接口214接收DRAM写访问(典型地压缩的页带和寄存器指令字块)。
c)从外部的DRAM芯片50向打印头芯片186再现页带。
这些任务是独立的。然而它们共享外部的DRAM芯片50。因此要求仲裁。PEC48构成得使再现页带所需要的DRAM访问总是具有最高的优先权。
PEC48包括一个PEC控制器228形式的控制电路，所述PEC控制器228给外部用户提供用单个32位数据分块读和写PEC寄存器、以及读和写DRAM的手段。
DRAM芯片50连接到一个SDRAM控制器234的存储器寄存控制电路。转而，SDRAM控制器34再连接到一个DRAM接口单元236形式的存储器寄存控制电路。
PEC48包括一个数据总线230和一个低速串行总线232。SDRAM控制器234和DRAM接口单元236都连接到低速串行总线232。PEC控制器228连接到数据总线230上。PEC控制器228还经低速接口220连接到低速串行总线232。高速接口214、PEC222和行下载装置/格式化装置单元也连接到数据总线230。
在使用中，因为PEC48从DRAM打印页带，给定的带B在可以开始打印以前经高速接口214加载进DRAM。然后，在PEC48经PEU再现带B的同时，可以将带B+1加载到DRAM上，同时带B+1被扩展和印刷，带B+2可以被加载，并且可以如此继续。
下表中简短地说明上述的PEC48的各个部件。
表2. PEC内的单元(高层面)
  单元缩写   单元名称   标号   说明
  DIU   DRAM接口单元   236   提供各种PEC单元的DRAM读写访问接口。DIU提供竟争的单元之间的仲裁，并且把RDAM请求传达到SCU。
  HSI   高速接口   214   对外部用户(譬如微处理器)提供写入DRAM的手段。
  LLFU   行加载装置/格式化装置单元   224   从行存储器读取扩展的页图象，正确地为Memjet打印头格式化数据
  LSI   低速接口   220   对外部用户提供向PCU发送指令和接收寄存器读出的手段
 PCU   PEC控制器  228   对外部用户提供用单个32位字块读写PEC寄存器，和读写DRAM的手段。
 PEU   页扩展单元  222   读取压缩的页数据并且对DRAM写出压缩的页数据的解压形式。
 PHI   打印头接口  226   可以向Memjet打印头段发送点数据并且可以提供多个PEC之间的同步。
 SCU   SDRAM控制器单元  234   提供DIU对外部DRAM的访问通路。
PEU222的扩展的方框图示于图11中。下表中简短地说明PEU222的各个部件
表.3页扩展单元内的单元(高层面)
  单元缩写   单元名称   标号   说明
  CDU   同色调解码器单元   238   扩展JPEG压缩的同色调层并且对DRAM写入解压的同色调层。
  CLBI   同色调行缓冲寄存器接口   240   提供CRU和HCU之间的行缓冲寄存
  CRU   同色调读取器单元   242   从DRAM读取的宽展的同色调图象
  DNC   失效喷嘴补偿器   244   在错误时向周围的点扩散失效喷嘴数据补偿失效喷嘴
  DWU   点线写入器单元   246   对给定的打印行对行存储DRAM写出6通道点数据
  HCU   半色调合成器单元   248   混色同色调层和补偿双层面点0并且定位标签点
  LBD   无损耗双层面解码器   250   扩展压缩的双层面层
  SLBI   点线缓冲寄存器接口   252   提供LBD与HCU之间的缓冲寄存
  TE   标签编码器   254   向标签点的行内编码标签数据
  TLBI   标签行缓冲寄存器接口   256   提供TE和HCU之间的行缓冲寄存
页扩展的第一阶段沿由CDU238/CRU242、LD250和TE254确定的一个流水线发生。CDU238扩展一个JPEG压缩的同色调(典型地CMYK)层。LBD250扩展一个压缩的双层面层(典型地K)，而TE254为在较后的阶段再现(典型地用红外线墨)编码数据标签。CLBI240，SLBI252和TLBI256从此阶段起接收输出数据。
HCU248进行第二阶段。HCU248混色一个同色调层并且在得出的双层面混色的层上复合定位标签和双层面点0层。调节一个由HCU248产生的数据流以跨重叠段或者打印头芯片186产生平滑的过渡。HCU248构成得使对于发生复合的方式存在若干可提供的选择。这个阶段可以产生达六个通道的双层面数据。应当注意到不是在打印头芯片186上要有所有六个通道。例如，打印头芯片186可以只是CMY，同时K推进到CMY通道中而不用IR通道。变通地，如果得不到IR墨或者用于检测的目的，上述定位标签可以用K打印。
DNC244进行第三阶段。在此阶段，DNC244在错误地向周围的点内扩散失效喷嘴数据时补偿打印芯片186中的失效喷嘴。
以上阶段中产生的双层面、六通道点数据(典型地CMYK-IRF)经DWU246缓冲寄存并且写出到一组存储在芯片外DRAM中的行缓冲寄存器中。
在最后阶段，从点数据DRAM加载回、对打印头格式化，并且经点FIFO(未示)传递到打印头接口226。点FIFO以PCLK速度从行加载装置/格式化装置单元224接收数据，同时打印头接口226从FIFO删除数据并且以PCLK/4、PCLK/2或者PCLK速度之一向打印头芯片186发送。
图12简单地示出内装所述分解(exploded)PEU222的PEC48。
与打印头芯片186相关联的打印长处在前文引述的申请和专利中详细说明了。然而，当用于宽打印格式时有些长处特别重要。
一个特别的长处是每个打印头芯片186大数量的喷嘴排列210。这方便了极快速的打印，在单个打印周期可以达到一个图象带。因此不必要象扫描打印头中那样使用其它打印周期以填充“漏失”点。
如上所述，PEC48提供打印头芯片186必要的同步控制。而且，如可以从若干前文引述的申请和专利，例如09/113,053中清楚，打印头芯片186使得能够从模拟的打印过程转换成全数字的过程。这使得能够有相当大的灵活性和速度。打印头芯片186的数字控制借助于PEC48。PEC48数字地控制打印头芯片186的事实使得能够达到每秒216亿滴的高打印速度。特别地，不再需要独立的打印头驱动器，这是芯片186高打印速度的关键。
装入CMOS层190起把采用MEMS技术的CMOS技术综合到每个打印头芯片186上的作用。它使之至少不需要为每个喷嘴排列210有一个芯片外连接。应当理解这样的芯片外连接要求会使打印头不可靠并且对制造商来说成本过高。
与打印机10相关联的另一个重要优点是与长度比较打印区120的宽度极小。在一个特定的示例中，打印区120可以小到0.5mm厚。应当理解，为保证在打印区产生精确的打印，需要达到经过打印区120的极稳定的纸移动。打印区120窄的宽度方便了纸22通过打印区时对纸22微小控制。
在提供相当宽的打印区的情况下，会提供经这样的打印区对纸22的运动进一步控制。这要求真空平台之类的装置持定纸22在纸22经打印区运动时对抗任何形式的枢转运动或者横向运动。这会大大地增加宽格式打印成本。
这高度地概括了一些为什么企图达到打印机10的打印特征时热或者泡式喷射或者压电打印头不是合乎实际的选择的原因。如前文引述的申请和专利中所指出，这样一些打印头不适用于提供用以上指出的方式达到的高密度喷嘴排列。因此，如果企图把热和压电打印头应用于宽格式打印机时，会需要有相对宽的打印区，从而会在必要的程度上发生打印头的重叠。这会直接引起上述的问题。还有，特别是用热打印头，就会需要适当的冷却系统把打印区中的温度保持在合理的水准。这会把成本提高到不可接受的程度。
为了达到对打印机在1600dpi的分辨率时的打印速度的评价，列出下面的比较表。应当注意到下表只是表示打印速度，而不是打算贬低用作比较对象的各种打印机。
宽格式打印机-快100倍
  Memjet   OEM打印头宽度(英寸)打印头芯片数量喷嘴数量   38.448368,640；   44856430,080；  51.264491,520；   57.672552,960；   64.080614,400；   70.488675,840；   76.896737,280
  最高打印速度(平方英尺/小时，分辨率1600×1600dpi)   17,578   20,508  23,438   26,367   29,297   32,227   35,156
  厂商   型号   分辨率   速度   对Memijet的速度优势(加快倍数据
  比较   HPHPEPSONEncadGretagGretagColorspanCanonMutohRolandNur   1000/50003000/35007000/10000Novajet800ArizonaArizonaMachxllBJW9000AlbatrossHiFi JetFresco   600×600600×300720×720600×600绘图模式309×618600×600600×1200792×792720×720360×360   120729096444220115726596300   146244195183408015324427018359   171285288214469317828531621468   1953262602445310720432636124478   2203662932755912022936640627588   2444073263056613325540745130598   26944835833673146280448496336107   29348839136679160306488541366117
如集成电路制造业的领域内普通技术人员所公知，尽管集成电路装置的制造厂的建设成本可能高，这种装置的商业制造成本却低下。因此本发明人认为根据本发明的宽格式打印机的制造成本将与以上表列的宽格式打印机的制造成本可较。
本领域内普通技术人员会清楚，对本文所述实施方式可以进行各种修改和变化而不偏离本发明的范围。

Claims (12)

1.一种用于宽格式纸宽喷墨打印机的打印组件，所述打印组件包含
一个长形支座，所述长形支座可以安装在打印机的支承结构上并且布置得与打印机的一个平台有一个工作距离；
若干布置在所述支座上的打印头芯片，所述打印头芯片以一定数量设置并且构成得使打印芯片界定一个在上述支座与上述平台之间的打印区，所述打印区有至少914mm的长度，每个打印头芯片都是内含多个喷嘴排列的类型，每个喷嘴排列是微电机械系统形式的，以达到从喷嘴排列喷墨；以及
控制电路，所述控制电路布置在所述支座上并且可工作地连接打印头芯片，以控制打印头芯片工作。
2.如权利要求1所述的打印组件，其中，每个打印头芯片都是在硅晶片基底上实现的集成电路制造技术的成品，所述硅晶片基底内含每个喷嘴排列的CMOS驱动电路。
3.如权利要求2所述的打印组件，其中，所述打印头芯片集合了至少五万个喷嘴排列。
4.如权利要求3所述的打印组件，其中，所述打印头芯片集合了至少十万个喷嘴排列。
5.如权利要求4所述的打印组件，其中，所述打印头芯片集合了至少二十万个喷嘴排列。
6.如权利要求5所述的打印组件，其中，所述打印头芯片集合了至少三十万个至八十万个之间的喷嘴排列。
7.如权利要求5所述的打印组件，其中，在支座上安装四十个至一百个之间的打印头芯片。
8.如权利要求7所述的打印组件，其中，打印头芯片每个都以对一个相对馈纸方向成直角延伸的直线呈大于零度且小于九十度的公共角度布置，同时打印头芯片的相继的端部重叠，以保证在打印区中连续打印。
9.如权利要求7所述的打印组件，其中，所述支座包括多个打印头模块，每个打印头模块内装一个打印头芯片，所述打印头模块可拆离地安装在所述支座上，以便于需要时更换所述模块。
10.如权利要求7所述的打印组件，其中，一个墨容器组件也安装在所述支座上以与打印头芯片液体连通，所述墨容器组件构成得向打印头芯片供应三种不同颜色的油墨。
11.如权利要求2所述的打印组件，其中，包括至少一个挠性印刷电路板，所述挠性印刷电路板相互连接在控制电路和每个打印头芯片的CMOS层之间，从而可以在控制电路和CMOS层之间进行通信。
12.一种宽格式纸宽喷墨打印机，所述宽格式纸宽喷墨打印机包含
一个支承结构；
一个置于所述支承结构中的平台；
一个工作上相对于所述平台布置的打印组件，所述的打印组件包含
一个长形支座，所述长形支座可以安装在打印机的支承结构上并且布置得与打印机的一个平台有一个工作距离；
若干布置在所述支座上的打印头芯片，所述打印头芯片以一定数量设置并且构成得使打印芯片界定一个在上述支座与上述平台之间的打印区，所述打印区有至少914mm的长度，每个打印头芯片都是内含多个喷嘴排列的类型，每个喷嘴排列是微电机械系统形式的，以达到从喷嘴排列喷墨；和
控制电路，所述控制电路布置在所述支座上并且工作地连接打印头芯片，以控制打印头芯片工作；以及
一个布置在所述支承结构上的馈给机构，用于经打印区馈给打印介质。
CNB02828741XA 2002-04-12 2002-06-13 宽格式纸宽喷墨打印机 Expired - Fee Related CN1314539C (zh)

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US7832837B2 (en) 2010-11-16
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