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公开(公告)号：EP0273664A3
公开(公告)日：1989-05-24
申请号：EP87311224.7
申请日：1987-12-18
申请人： XEROX CORPORATION
CPC分类号： B41J2/14008 , B41J2/2128 , B41J2002/14322
摘要： Provision is made for varying the size of the pixels or spots printed by an acoustic printer of the type in which one or more droplet ejectors (12) are driven by rf voltage pulses to produce focused acoustic beams (22) for ejecting droplets (25) of ink on demand from a free surface (24) of an ink supply (23). It has been found that the size of the individual droplets (25) of ink that are ejected from the free surface (24) of the ink can be varied by modulating the frequency, duration or amplitude of the pulses applied to such a droplet ejector (12). Furthermore, it also has been found that the trajectory along which the ink droplets (25) are propelled from the free surface (24) of the ink supply to a nearby record medium (11) is sufficiently well defined and repeatable that multiple droplets (25) can be deposited on the record medium (11) in rapid sequence, one on top of the other, before the ink has time to dry, to print variable diameter pixels or spots. The control techniques discribed in this application may be employed for variable resolution printing and for imparting a controlled pseudo-gray scale shading to the printed image. Each of the pixels of the printed image may be composed of a single cell for one spot per pixel printing or may be subdivided into a plurality of cells for multiple spot per pixel printing.
摘要翻译： 规定改变由其中一个或多个液滴喷射器（12）由射频电压脉冲驱动以产生用于喷射液滴（25）的聚焦声束（22）的类型的声学打印机打印的像素或点的大小。 从供墨源（23）的自由表面（24）按需供应墨水。 已经发现，通过调节施加到这种液滴喷射器的脉冲的频率，持续时间或幅度，可以改变从墨水的自由表面（24）喷射的墨水的各个液滴（25）的尺寸 12）。 此外，还已经发现，墨滴（25）从墨供应源的自由表面（24）被推进到附近的记录介质（11）所沿着的轨迹被充分确定并且可重复，使得多个液滴（25 ）可以在墨水有时间干燥之前以快速的顺序沉积在记录介质（11）上，一个在另一个之上，以印刷可变直径的像素或斑点。 在本申请中描述的控制技术可以用于可变分辨率印刷和用于向印刷图像传递受控制的伪灰度阴影。 打印图像的每个像素可以由用于每个像素打印的一个点的单个单元构成，或者可以被划分为用于多个点每像素打印的多个单元。
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公开(公告)号：EP0273664B1
公开(公告)日：1993-07-14
申请号：EP87311224.7
申请日：1987-12-18
申请人： XEROX CORPORATION
CPC分类号： B41J2/14008 , B41J2/2128 , B41J2002/14322
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公开(公告)号：EP0272154B1
公开(公告)日：1993-09-15
申请号：EP87311225.4
申请日：1987-12-18
申请人： XEROX CORPORATION
IPC分类号： B41J2/04
CPC分类号： B41J2/14008 , B41J2002/14322
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公开(公告)号：EP0272154A3
公开(公告)日：1989-10-18
申请号：EP87311225.4
申请日：1987-12-18
申请人： XEROX CORPORATION
IPC分类号： B41J2/04
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： A printhead (11) for an acoustic printer comprises one or more acoustic microlenses (12), each of which brings an acoustic beam (13) to focus approximately at the free surface (15) of a pool (14) of ink for ejecting individual droplets (16) of ink from the pool (14) on demand. As used herein, an "acoustic microlens" is defined as being an acoustic lens (12) having an aperture diameter (A) which is less than an order of magnitude greater than the wavelength of the incident acoustic wave (i. e., the acoustic wave which illuminates the lens).
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公开(公告)号：EP0273664A2
公开(公告)日：1988-07-06
申请号：EP87311224.7
申请日：1987-12-18
申请人： XEROX CORPORATION
CPC分类号： B41J2/14008 , B41J2/2128 , B41J2002/14322
摘要： Provision is made for varying the size of the pixels or spots printed by an acoustic printer of the type in which one or more droplet ejectors (12) are driven by rf voltage pulses to produce focused acoustic beams (22) for ejecting droplets (25) of ink on demand from a free surface (24) of an ink supply (23). It has been found that the size of the individual droplets (25) of ink that are ejected from the free surface (24) of the ink can be varied by modulating the frequency, duration or amplitude of the pulses applied to such a droplet ejector (12). Furthermore, it also has been found that the trajectory along which the ink droplets (25) are propelled from the free surface (24) of the ink supply to a nearby record medium (11) is sufficiently well defined and repeatable that multiple droplets (25) can be deposited on the record medium (11) in rapid sequence, one on top of the other, before the ink has time to dry, to print variable diameter pixels or spots. The control techniques discribed in this application may be employed for variable resolution printing and for imparting a controlled pseudo-gray scale shading to the printed image. Each of the pixels of the printed image may be composed of a single cell for one spot per pixel printing or may be subdivided into a plurality of cells for multiple spot per pixel printing.
摘要翻译： 提供了改变由其中一个或多个液滴喷射器（12）由射频电压脉冲驱动的类型的声学打印机打印的像素或点的大小，以产生用于喷射液滴（25）的聚焦声束（22） 的墨水供应（23）的自由表面（24）。 已经发现，通过调制施加到这样的液滴喷射器的脉冲的频率，持续时间或振幅来改变从墨水的自由表面（24）喷出的墨的各个液滴（25）的尺寸， 12）。 此外，还发现墨滴（25）从油墨供应的自由表面（24）推进到附近的记录介质（11）的轨迹被充分地很好地限定和重复，使得多个液滴 ）可以在油墨有时间干燥之前以快速顺序沉积在记录介质（11）上，一个在另一个之上，以打印可变直径的像素或点。 本申请中描述的控制技术可以用于可变分辨率打印和用于将受控的伪灰度阴影赋予印刷图像。 打印图像的每个像素可以由用于每像素打印的一个点的单个单元组成，或者可以被细分为多个单元，用于每像素打印多个点。
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公开(公告)号：EP0272154A2
公开(公告)日：1988-06-22
申请号：EP87311225.4
申请日：1987-12-18
申请人： XEROX CORPORATION
IPC分类号： B41J2/04
CPC分类号： B41J2/14008 , B41J2002/14322
摘要： A printhead (11) for an acoustic printer comprises one or more acoustic microlenses (12), each of which brings an acoustic beam (13) to focus approximately at the free surface (15) of a pool (14) of ink for ejecting individual droplets (16) of ink from the pool (14) on demand. As used herein, an "acoustic microlens" is defined as being an acoustic lens (12) having an aperture diameter (A) which is less than an order of magnitude greater than the wavelength of the incident acoustic wave (i. e., the acoustic wave which illuminates the lens).
摘要翻译： 用于声学打印机的打印头（11）包括一个或多个声学微透镜（12），每个声学微透镜（12）使声束（13）大致聚焦在墨池（14）的自由表面（15）上以便喷射个体 根据需要从池（14）中喷出墨滴（16）。 如本文所使用的，“声学微透镜”被定义为具有小于比入射声波的波长（即，声波的波长大一个数量级的孔径（A）的声透镜（12） 照亮镜头）。
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