CN105555539B - 打印杆以及形成打印杆的方法 - Google Patents
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Abstract
本文描述了打印杆模块以及形成打印杆模块的方法。在示例中,打印杆模块包括印刷电路板(PCB)、多个打印头管芯条和歧管。打印头管芯条嵌入在模塑件中,并且附接到PCB。模塑件具有与打印头管芯条的液体馈送孔液体连通的多个槽。歧管与槽直接液体连通,以向其提供液体。
Description
背景技术
喷墨笔或打印杆中的每一个打印头管芯都包括将油墨传送到喷射腔的微小通路。通过在将一个或多个打印头管芯支撑在笔或打印杆上的结构中的通道,将油墨从油墨供应源分配到管芯通路。可以期望缩小每一个打印头管芯的尺寸,例如以降低管芯的成本,并因此降低笔或打印杆的成本。然而,使用较小的管芯可能需要改变支撑管芯的较大结构,包括将油墨分配到管芯的通道。
附图说明
针对以下附图来说明本发明的一些实施例:
图1是例示了根据示例性实施方式在承印物宽的打印杆中实施新的液体流动结构的一个示例的喷墨打印机的框图。
图2-7和图11例示了根据示例性实施方式实施新的液体流动结构(例如,可以用于图1中所示的打印机中)的一个示例的喷墨打印杆。
图8是根据示例性实施方式的打印杆模块的框图;以及
图9和图10示出了形成根据示例性实施方式的打印杆模块的过程。
具体实施方式
图1是例示了根据示例性实施方式在承印物宽的打印杆36中实施新的液体流动结构的一个示例的喷墨打印机34的框图。参考图1,打印机34包括横跨承印物38的宽度的打印杆36、与打印杆36相关联的流量调节器40、承印物输送机构42、油墨或其它打印液体供应源44,以及打印机控制器46。控制器46代表对打印机34的可操作元件进行控制所需要的程序、一个或多个处理器和相关联的存储器以及电子电路与组件。打印杆36包括打印头37的装置,其用于将打印液体分配到一张纸或连续的一卷纸或其它承印物38上。如下详述的,每一个打印头37都包括在模塑件中的一个或多个打印头管芯,其中通路16将打印液体直接提供给一个或多个管芯。每一个打印头管芯都通过从供应源44进入并穿过流量调节器40和打印杆36中的通路16的流动路径来接收打印液体。注意,如下所述,打印杆36不需要位于打印头37与液体供应源之间的液体散开(fan-out)组件。
图2-7例示了根据示例性实施方式实施新的液体流动结构(例如,可以用于图1中所示的打印机34中)的一个示例的喷墨打印杆36。首先参考图2的平面视图,打印头37嵌入在细长的单片式模塑件14中,并且大致以交错结构首尾相连地布置在行48中,其中,每一行中的打印头都与此行中的另一个打印头重叠。尽管示出了四行48交错的打印头37,例如用于打印四种不同的颜色,但是其它适当的结构也是可以的。例如,图11示出了喷墨打印杆36的平面视图,喷墨打印杆36具有嵌入在细长的单片式模塑件14中的交错的多组打印头37。以举例的方式,多组中的每一组都包括四个打印头37,尽管一组可以具有更多或更少的打印头。
图3是沿着图2中的线3-3截取的截面视图。图4-6是图3的细节图,图7是示出了在图3-5中的打印头管芯流动结构的部件中的一些的布局的平面视图。现在参考图2-6,在所示的示例中,每一个打印头37都包括一对打印头管芯12,每一个打印头管芯12都具有两行喷射腔50及相应的孔52,通过孔52从腔50喷射打印液体。模塑件14中的每一个通路16都将打印液体提供给一个打印头管芯12。用于打印头37的其它适当的结构也是可以的。例如,更多或更少的打印头管芯12可以与更多或更少的喷射腔50和通路16一起使用。(尽管打印杆36和打印头37在图3-6中面朝上,但是打印杆36和打印头37通常在被安装在打印机中时面朝下,如图1的框图中所示的。)
打印液体从歧管54流入每一个喷射腔50中,歧管54在两行喷射腔50之间沿着每一个管芯12纵向延伸。打印液体通过多个端口56馈入歧管54中,该多个端口56在管芯表面20连接到打印液体供应通路16。如所示的,打印液体供应通路16基本上宽于打印液体端口56,以将打印液体从流量调节器中较大的、松散间隔的通道或者将打印液体传送到打印杆36中的其它部件,传送到打印头管芯12中的较小的、紧密间隔的打印液体端口56。因而,打印液体供应通路16可以有助于减小甚至消除对一些传统打印头中所必需的分立的“散开”结构及其它液体运送结构的需要。此外,如所示的,将相当大面积的打印头管芯表面20直接暴露于通路16,允许通路16中的打印液体在进行打印期间帮助冷却管芯12。
为了方便起见,图2-6中的打印头管芯12的理想化表示示出了三个层58、60、62,仅仅是为了清楚地示出喷射腔50、孔52、歧管54和端口56。实际的喷墨打印头管芯12通常是形成于硅衬底58上的复杂集成电路(IC)结构,具有在图2-6中未示出的层和元件。例如,驱动在每一个喷射腔50处的形成于衬底58上的热喷射器元件或压电喷射器元件,以从孔52喷射油墨或其它打印液体的液滴或流。尽管本公开内容以举例的方式对“油墨”进行了说明,但是将理解的是,普遍地,在具体表述为“油墨”的任意处,都可以使用“液体”来代替“油墨”。
模制的流动结构10实现了使用窄长且极薄的打印头管芯12(本文中也称为“打印头管芯条”、“管芯条”或“条”)。例如,已示出约26mm长、500μm宽、100μm厚的打印头管芯12可以模制到500μm厚的主体14中,以代替传统的500μm厚的硅打印头管芯。相比于在硅衬底中形成馈送通路,将通路16模制到主体14中不仅成本更低和更容易,而且在较薄的管芯12中形成打印液体端口56也是成本更低和更容易。作为替代方案,激光或插切锯(plunge cutsaw)也可以用于在模制板中产生油墨通路。例如,可以通过对于较厚的衬底不实用的干法蚀刻和其它适当的显微机械加工技术,在100μm厚的打印头管芯12中形成端口56。在薄的硅、玻璃或其它衬底58中显微机械加工直的或略微锥形的贯通端口56的高密度的阵列,而不是形成传统的槽,留下了较牢固的衬底,同时仍提供了足够的打印液体流动量。锥形端口56有助于使气泡移动离开歧管54和喷射腔50,其例如在被施加到衬底58的单片式或多层孔板60/62中形成。预计当前的管芯处理设备和微型器件模制工具与技术可以适于将管芯12模制为50μm薄,长宽比高达150,并且将通路16模制为30μm窄。此外,模塑件14提供了有效但廉价的结构,其中,可以在单个单片式主体中支撑多行这种管芯条。
在一个示例中,每一个管芯条12的宽度基本上都比位于管芯条12之间的间距窄。此外,每一个管芯条12的厚度基本上都比单片式模塑件14的厚度薄。在非限制性示例中,每一个管芯条12都小于或等于300微米。将理解的是,管芯条12可以具有大于300微米的其它厚度。
图8是根据示例性实施方式的打印杆模块800的框图。打印杆模块800包括支撑结构804,支撑歧管802和印刷电路板(PCB)806。歧管802具有油墨传送接口,其具有多个油墨通道812。PCB 806包括打印头管芯条808(例如示出了四个),它们通过槽810与歧管802液体连通。除了支撑打印头管芯条808以外,PCB 806可以包括耦合到打印头管芯条808的电路和/或布线。在一个示例中,管芯条808中的每一个都与PCB 806的顶部表面共平面。如上所示和所述的,每一个打印头管芯条808都具有油墨馈送槽810,用于直接从歧管802接收油墨。当被组装为打印杆模块800的部分时,打印头管芯条808并非单个半导体衬底的部分,而是由单独的半导体衬底形成(注意,条可以形成于单个衬底或晶圆上,并且然后在制造过程中被单颗化,以便组装在打印杆模块800上)。可以设置单独的打印头管芯条808,以提供与歧管802协作来接收油墨的适当的油墨槽间距。注意,在歧管802与打印头管芯条808之间不需要单独的液体散开结构。以下说明用于形成打印头管芯808的示例性过程。本文中所使用的术语“打印杆模块”表示包含各种打印结构,例如页宽模块、集成打印头/容器、个体油墨盒等。
图9和图10示出了用于形成根据示例性实施方式的打印杆模块的过程。图9A到图9F示出了在各个步骤后模块的横截面,而图10示出了用于形成打印杆模块的过程1000的流程图。在步骤1002处,形成打印头管芯条。如图9A所示的,打印头管芯条902包括油墨馈送孔904、薄膜层908(包括发射腔(firing chamber))以及导体906。油墨馈送孔904被配置为将油墨提供给形成于薄膜层908中的液体喷射器。打印头管芯条902包括半导体材料(例如,硅),并且可以包括集成电路(例如,晶体管、电阻器等)。
在步骤1004处,形成PCB。如图9B所示的,PCB 910包括导电布线912和导电焊盘914。PCB 910还包括区域911(也称为窗口),在其中将容纳打印头管芯条902。
在步骤1006处,PCB和打印头管芯条被附接到具有剥离带(release tape)918的承载器。如图9C所示的,具有剥离带918的承载器916支撑PCB 910和打印头管芯条902。
在步骤1008处,将打印头管芯条和PCB包封在模塑件中。在示例中,模塑件可以是单片式模塑料。如图9D所示的,模塑件920包封着PCB 910和打印头管芯条902。
在步骤1010处,从承载器移除打印头。在步骤1012处,在打印头管芯条与PCB910之间形成引线键合。如图9E所示的,在导电焊盘906与导电焊盘914之间形成引线键合922。可以将引线键合922包封在保护膜924中。
在步骤1012处,在模塑件中形成槽。如图9F所示的,槽950形成于模塑件920中,与油墨馈送孔液体连通。可以使用多种技术来形成槽,例如激光蚀刻、插切锯等。在步骤1014处,打印头附接到具有歧管的结构,如上在图8中所示的。
在前述说明中,阐述了许多细节以提供对本发明的理解。然而,本领域技术人员将理解,可以在没有这些细节的情况下实践本发明。尽管针对有限数量的实施例公开了本发明,但是本领域技术人员将由此意识到许多修改和变型。旨在于所附权利要求书涵盖落入本发明的真实精神和范围内的这种修改和变型。
Claims (14)
1.一种打印杆模块,包括:
印刷电路板;
多个打印头管芯条,所述多个打印头管芯条嵌入在模塑件中,并且附接到所述印刷电路板,所述模塑件具有与所述多个打印头管芯条的液体馈送孔直接液体连通的多个槽;以及
歧管,所述歧管与所述多个槽直接液体连通,以向所述多个槽提供液体,
其中,所述打印头管芯条位于所述印刷电路板的窗口中。
2.根据权利要求1所述的打印杆模块,其中,所述多个槽形成于所述模塑件中,以使得所述多个槽的槽间距与所述歧管的液体传送接口相匹配,以提供直接液体连通而无需散开。
3.根据权利要求1所述的打印杆模块,其中,所述多个打印头管芯条中的每一个打印头管芯条的宽度都基本上比在所述多个打印头管芯条之间的间隔窄。
4.根据权利要求1所述的打印杆模块,其中,所述多个打印头管芯条中的每一个打印头管芯条的厚度都基本上比所述模塑件的厚度薄。
5.根据权利要求4所述的打印杆模块,其中,所述多个打印头管芯条中的每一个打印头管芯条的厚度都小于或等于300微米。
6.根据权利要求1所述的打印杆模块,其中,所述多个打印头管芯条的顶部表面与所述印刷电路板的顶部表面共平面。
7.根据权利要求1所述的打印杆模块,还包括:
引线键合,所述引线键合将所述印刷电路板的导电元件电耦合到所述打印头管芯条中的至少一个打印头管芯条的导电元件。
8.根据权利要求1所述的打印杆模块,其中,所述模塑件包括单片式模塑件。
9.一种形成打印杆模块的方法,包括:
形成多个打印头管芯条;
形成打印头电路板,所述打印头管芯条位于所述打印头电路板的窗口中;
将所述打印头电路板和所述多个管芯条附接到具有剥离带的承载器;
利用模塑件来包封所述多个打印头管芯条和所述打印头电路板,以形成打印头;
从所述承载器移除所述打印头;以及
在所述模塑件中形成与所述多个打印头管芯的液体馈送孔直接液体连通的多个槽。
10.根据权利要求9所述的方法,还包括:
形成引线键合以将所述打印头电路板的导电元件电耦合到所述多个打印头管芯条的导电元件。
11.根据权利要求10所述的方法,还包括:
利用保护膜来包封所述引线键合。
12.根据权利要求9所述的方法,还包括:
将所述打印头附接到具有歧管的支撑结构,以使得所述歧管的液体通道与所述多个槽直接液体连通。
13.根据权利要求12所述的方法,其中,所述模塑件包括单片式模塑件。
14.根据权利要求9所述的方法,其中,在所述模塑件中使用激光或插切锯来形成所述多个槽。
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PCT/US2013/060828 WO2015041665A1 (en) | 2013-09-20 | 2013-09-20 | Printbar and method of forming same |
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EP3711089A4 (en) * | 2018-04-15 | 2021-06-30 | Hewlett-Packard Development Company, L.P. | ALIGNMENT TARGET FOR SHIFT CHIP |
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US9676192B2 (en) | 2017-06-13 |
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US20160221341A1 (en) | 2016-08-04 |
WO2015041665A1 (en) | 2015-03-26 |
TW201529344A (zh) | 2015-08-01 |
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EP3046768B1 (en) | 2020-09-02 |
CN105555539A (zh) | 2016-05-04 |
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