公开(公告)号：EP0716926A2

公开(公告)日：1996-06-19

申请号：EP95309100.6

申请日：1995-12-14

Applicant: Compaq Computer Corporation

Inventor： Good, Lowell M. ,  Wallace, David B.

IPC: B41J2/16 ,  B41J2/045

CPC classification number: B41J2/14209 ,  B41J2202/18

Abstract: A length-mode ink jet printhead which includes an active lower body portion, a series of active intermediate body portions and an inactive upper body portion which collectively define a series of generally parallel channels which extend between front and rear side surfaces of the printhead. Each channel is bounded by first and second sidewalls, each comprised of a lower body projection and an intermediate body portion conductively mounted thereto. Formed in the upper body portion are a series of ink ejection orifices, each of which extends from the top side surface to a corresponding one of the series of channels and is located midway between the front and rear side surfaces of the printhead. Mounted on the front and rear side surfaces of the printhead are acoustic pressure wave reflection interfaces for respectively reflecting forwardly and rearwardly propagating pressure waves generated in the series of channels. An orthogonally directed droplet of ink is ejected from an ink ejection orifice by imparting an acoustic pressure wave to a selected channel in communication with the ink ejection orifice.

Abstract translation: 长度模式的喷墨打印头其中在活性较低的主体部分包括，一系列活性中间主体部的和为无效上体部分，其共同限定了一系列基因反弹平行通道，其前部和打印头的后方侧表面之间延伸的。 每个信道由第一和第二侧壁限定，下部主体突起的每个包括在中间主体部导电地安装到其上。 形成在上主体部分是一系列的喷墨孔，其每一个从顶侧表面延伸到所述一系列通道的相应的一个，并且位于中途打印头的前部和后部的侧表面之间的。 安装了打印头的前侧和后侧的表面上分别用于向前反射和向后传播的一系列通道的产生的压力波的声压波的反射界面。 墨水的正交定向墨滴从墨喷射孔通过赋予到声压波到所选择的信道与墨喷射孔喷出的通信上。

公开(公告)号：EP0688130A2

公开(公告)日：1995-12-20

申请号：EP95303888.2

申请日：1995-06-06

Applicant: Compaq Computer Corporation

Inventor： Wallace, David B.

IPC: H04N1/40

CPC classification number: H04N1/4057 ,  B41J2202/10

Abstract: A method of producing, on a physical medium, a gradient tonal representation of an image and a printhead for producing the same. An input image is divided into first and second regions. First, continuously variable intensity level, continuous tone and second, discretely variable intensity level, half-tone portions of the representation which respectively correspond to the first and second regions of the image are then printed by depositing selected quantities of ink on the first and second portions of the physical medium such that each pixel thereof has an ink intensity level corresponding to the image intensity level for the corresponding one of the pixels of the first region of the image. The ink is deposited on the second portion of the physical medium by depositing a spot of ink having a first diameter on selected ones of the pixels of the second portion, depositing a spot of ink having a second diameter on others of the pixels of the second portion and depositing no ink on still others of the pixels of the second portion such that the second portion of the representation has the desired ink intensity level. The color of the ink ejected may be black, in which case, the gradient tonal representation produced thereby shall be a gray scale representation, or other color such as yellow, cyan or magenta.

Abstract translation: 在物理介质上产生图像的梯度色调表示和用于制造图像的打印头的方法。 输入图像被分成第一和第二区域。 首先，分别对应于图像的第一和第二区域的连续可变强度水平，连续色调和第二，离散可变强度水平，表示的半色调部分通过在第一和第二图像上沉积选定量的油墨而被印刷 物理介质的部分，使得其每个像素具有对应于图像的第一区域的相应一个像素的图像强度水平的墨水强度水平。 通过在第二部分的选定的像素上沉积具有第一直径的墨点，将油墨沉积在物理介质的第二部分上，将具有第二直径的墨点在第二部分的像素的另一个上沉积 并且在第二部分的像素的其余部分上没有油墨沉积，使得表示的第二部分具有期望的墨水强度水平。 喷出的墨的颜色可以是黑色，在这种情况下，由此产生的渐变色调表示为灰度表示，或其他颜色，如黄色，青色或品红色。 $$

公开(公告)号：EP0528648A1

公开(公告)日：1993-02-24

申请号：EP92307428.0

申请日：1992-08-13

Applicant: Compaq Computer Corporation

Inventor： Pies, John R. ,  Wallace, David B. ,  Hayes, Donald J.

IPC: B41J2/045

CPC classification number: B41J2/14209

Abstract: A sidewall actuated channel array for a high density ink jet printhead. The sidewall actuator (28) includes a top wall (16), a bottom wall (12) and at least one elongated liquid confining channel (18) defined by the top wall (16), the bottom wall (12) and sidewalls (30,32). The actuator sidewall is comprised of a first actuator sidewall section (32) formed of a piezoelectric material poled in a first direction perpendicular to a first channel (18) and attached to the top wall (16), a second actuator sidewall section (30) attached to the first sidewall section (32) and the bottom wall (12), and means for applying an electric field across the first actuator sidewall section (32) and perpendicular to the direction of polarization. When the electric field is applied across the first sidewall section (32), the actuator sidewall engages in a motion which produces an ink ejecting pressure pulse in the channel (18).

Abstract translation: 用于高密度喷墨打印头的侧壁致动通道阵列。 侧壁致动器（28）包括顶壁（16），底壁（12）和由顶壁（16），底壁（12）和侧壁（30）限定的至少一个细长液体限制通道（18） ，32）。 致动器侧壁包括由垂直于第一通道（18）的第一方向极化并连接到顶壁（16）的压电材料形成的第一致动器侧壁部分（32），第二致动器侧壁部分（30） 附接到第一侧壁部分（32）和底壁（12）的装置，以及用于施加横跨第一致动器侧壁部分（32）并垂直于偏振方向的电场的装置。 当电场施加在第一侧壁部分（32）上时，致动器侧壁接合在通道（18）中产生喷墨压力脉冲的运动。

公开(公告)号：EP0528647A1

公开(公告)日：1993-02-24

申请号：EP92307427.2

申请日：1992-08-13

Applicant: Compaq Computer Corporation

Inventor： Pies, John R. ,  Wallace, David B. ,  Hayes, Donald J.

IPC: B41J2/045 ,  B41J2/145

CPC classification number: B41J2/1623 ,  B41J2/14209 ,  B41J2/15 ,  B41J2/155 ,  B41J2/1609 ,  B41J2/1618 ,  B41J2/1632 ,  B41J2/2103 ,  B41J2002/14379

Abstract: An ink jet printhead (10) for a drop-on-demand type ink jet printing system. The printhead includes a base section (12) having a series of generally parallel spaced projections (30) extending longitudinally therealong, a series of intermediate sections (32) conductively mounted on a top side of a corresponding one of the series of base section projections (30) and a top section (16) conductively mounted to a top side of each of the series of intermediate sections (32).

Abstract translation: 一种用于按需喷墨打印系统的喷墨打印头（10）。 打印头包括基部（12），该基部具有一系列沿着其纵向延伸的大致平行间隔开的​​突起（30），一系列中间部分（32）导电地安装在一系列基部突起中的相应一个 30）和导电地安装到每个所述一系列中间部分（32）的顶侧的顶部部分（16）。