Method of printing with multiple sized drop ejectors on a single printhead
    31.
    发明授权
    Method of printing with multiple sized drop ejectors on a single printhead 失效
    在单个打印头上使用多种尺寸的喷墨打印机打印方法

    公开(公告)号:US06406115B2

    公开(公告)日:2002-06-18

    申请号:US09232461

    申请日:1999-01-19

    IPC分类号: B41J2205

    CPC分类号: B41J2/5056 B41J2/2125

    摘要: A printhead uses large and small drop ejectors to achieve efficient gray scale printing. The printhead is arranged with a close packed configuration of alternating large and small nozzles positioned to maximize coverage while minimizing the volume of ejected ink. The printhead may be operated in a single pass mode or dual pass mode. In the single pass mode, complete coverage is effected by rippling through the odd numbered jets first and then rippling through the even numbered jets. The position of the small spots from the even numbered jets can be adjusted to maximize coverage and counteract offset between nozzle centers. Printheads with different size nozzles can also be operated by a staggered firing method using dual passes to offset spots in the scan direction by shifting the printhead between passes or alternating between groups of large and small nozzles. Further improvements to image quality can be realized by shifting the spots in the direction perpendicular to the scanning direction by tilting the printhead or offsetting the nozzles with respect to the ink channels on the printhead.

    摘要翻译: 打印头使用大而小的墨滴喷射器来实现高效的灰度打印。 打印头布置成具有交替的大和小喷嘴的紧密堆积构造,其被定位成最大化覆盖范围,同时最小化喷射墨的体积。 打印头可以在单程模式或双通道模式下操作。 在单程模式中,完全覆盖通过首先通过奇数射流波纹,然后通过偶数喷射波纹来实现。 可以调整来自偶数喷嘴的小点的位置,以最大化覆盖范围并抵消喷嘴中心之间的偏移。 具有不同尺寸喷嘴的打印头也可以通过交错的点火方法来操作,使用双程通过在扫描方向上偏移打印头,使打印头在通过之间移动或在大喷嘴和小喷嘴组之间交替。 通过倾斜打印头或相对于打印头上的墨水通道偏移喷嘴,可以通过使垂直于扫描方向的方向上的点移动来实现对图像质量的进一步改进。

    Thermal ink jet heater design
    32.
    发明授权
    Thermal ink jet heater design 失效
    热喷墨加热器设计

    公开(公告)号:US06315398B1

    公开(公告)日:2001-11-13

    申请号:US07963969

    申请日:1992-10-21

    IPC分类号: B41J205

    摘要: The new heater element design has a pit layer which protects the overglaze passivation layer, PSG step region, portions of the Ta layer and dielectric isolation layer and junctions or regions susceptible to the cavitational pressures. Further, the inner walls of the pit layer define the effective heater area and the dopant lines define the actual heater area. In alternative embodiments, the dopant lines define the actual and effective heater areas, and an inner wall and a dopant line define the actual and effective heater areas. Further, when the new heater element designs are incorporated into printheads having full pit channel geometry and open pit channel geometry, the operating lifetime of the printhead is extended because the added protection of the pit layer prevents: 1) passivation damage and cavitational damages of the heater elements; and 2) degradation of heater robustness, hot spot formations and heater failures well into the 109 pulse range. The printhead incorporating the new heater element design can be incorporated into drop-on-demand printing systems of a carriage type or a full width type.

    摘要翻译: 新的加热器元件设计具有凹坑层,其保护釉面钝化层,PSG阶梯区域,Ta层和电介质隔离层的部分以及对空穴压力敏感的结或区域。 此外,凹坑层的内壁限定有效的加热器面积,并且掺杂剂线限定实际的加热器面积。 在替代实施例中,掺杂剂线限定实际和有效的加热器区域,并且内壁和掺杂剂线限定实际和有效的加热器区域。 此外,当新的加热器元件设计结合到具有全坑通道几何形状和露天通道几何形状的打印头中时,打印头的工作寿命延长,因为凹坑层的附加保护防止:1)钝化损伤和空穴损伤 加热元件; 和2)加热器鲁棒性,热点形成和加热器故障的恶化达到109脉冲范围。 包含新的加热器元件设计的打印头可以结合到托架型或全宽型的按需按需打印系统中。

    Architecture for an ink jet printer with offset arrays of ejectors
    34.
    发明授权
    Architecture for an ink jet printer with offset arrays of ejectors 失效
    具有偏移排列阵列的喷墨打印机的结构

    公开(公告)号:US5598191A

    公开(公告)日:1997-01-28

    申请号:US457725

    申请日:1995-06-01

    申请人: Gary A. Kneezel

    发明人: Gary A. Kneezel

    摘要: An ink-jet printer includes a printhead disposed on a reciprocating carriage. The printhead includes two sets of ejectors spaced by a predetermined pitch, in collinear linear arrays. The two sets of ejectors are offset by a partial pitch to enable interleaving of print swaths by the two sets of ejectors, in order to print at a higher resolution than the predetermined pitch would allow.

    摘要翻译: 喷墨打印机包括设置在往复运动滑架上的打印头。 打印头包括以组合线性阵列间隔开预定间距的两组喷射器。 这两组喷射器被部分间距偏移,以使得能够通过两组喷射器交替打印条带,以便以比预定间距允许的更高的分辨率进行打印。

    Calibration system for a thermal ink-jet printer
    35.
    发明授权
    Calibration system for a thermal ink-jet printer 失效
    热喷墨打印机的校准系统

    公开(公告)号:US5519419A

    公开(公告)日:1996-05-21

    申请号:US198756

    申请日:1994-02-18

    摘要: A thermal ink-jet printhead adapted to emit ink onto a print sheet is automatically adjusted. The printhead is caused to emit ink onto a sheet in a manner consistent with an image of a first density, and then substantially immediately caused to emit ink in the form of a first test pattern on the sheet. The density of the first test pattern on the sheet is measured. The printhead is caused to emit ink onto the sheet in a manner consistent with an image of a second density, and then substantially immediately caused to emit ink in the form of a second test pattern on the sheet. The density of the second test pattern on the sheet is measured. The densities of the first test pattern and the second test pattern are correlated with a function relating a characteristic of an image printed with the printhead to a temperature of the printhead.

    摘要翻译: 自动调节适于将墨喷射到打印纸上的热喷墨打印头。 使得打印头以与第一密度的图像一致的方式将墨喷射到片材上,然后基本上立即在片材上以第一测试图案的形式发出墨水。 测量片材上第一测试图案的密度。 使得打印头以与第二密度的图像一致的方式将墨喷射到片材上,然后基本上立即在片材上以第二测试图案的形式发出墨水。 测量片材上第二测试图案的密度。 第一测试图案和第二测试图案的密度与将打印头打印的图像的特性相关联的功能与打印头的温度相关联。

    Thermal degassing device for inkjet printer
    37.
    发明授权
    Thermal degassing device for inkjet printer 有权
    喷墨打印机的热脱气装置

    公开(公告)号:US08465139B2

    公开(公告)日:2013-06-18

    申请号:US12897902

    申请日:2010-10-05

    CPC分类号: B41J2/19

    摘要: An inkjet printhead having a drop ejector array, an ink passageway for providing ink to the drop ejector array, and a thermally actuated degassing unit. The degassing unit itself includes a body enclosing an air chamber, a check valve configured to allow air to vent from the air chamber to ambient when the pressure in the air chamber exceeds ambient air pressure by a predetermined amount. The thermal degassing unit includes a thermally-induced pressure build-up time to increase the pressure in the air chamber. The air chamber is allowed to cool which causes internal pressure to drop below ambient and draws gas out of the ink.

    摘要翻译: 具有滴落喷射器阵列的喷墨打印头,用于向滴喷射器阵列提供墨水的墨水通道以及热致动脱气单元。 脱气单元本身包括封闭空气室的主体,当气室中的压力超过环境空气压力预定量时,止回阀构造成允许空气从空气室排放到环境中。 热脱气单元包括热诱导的压力建立时间以增加空气室中的压力。 允许空气室冷却,这导致内部压力低于环境温度并将气体从油墨中抽出。

    METHOD OF IDENTIFYING USER OF SCANNING APPARATUS
    40.
    发明申请
    METHOD OF IDENTIFYING USER OF SCANNING APPARATUS 有权
    识别扫描仪用户的方法

    公开(公告)号:US20120147410A1

    公开(公告)日:2012-06-14

    申请号:US12966169

    申请日:2010-12-13

    IPC分类号: G06K15/02

    摘要: A method of operating a scanning apparatus including a transparent platen, a memory, a lid to cover the transparent platen, and a door in the lid, the method includes exposing a portion of the transparent platen through the door in the lid; placing a user identifier into the door in the lid; providing a user identification initiation signal; emitting light from a light source to illuminate the exposed portion of the transparent platen; moving a photosensor array to scan the user identifier through the exposed portion of the transparent platen; providing a digitized image of the user identifier from the scan by the photosensor array; comparing the digitized image to a stored pattern; and authorizing a function of the scanning apparatus if it is determined that the digitized image of the user identifier adequately matches the stored pattern.

    摘要翻译: 一种操作包括透明压板,存储器,覆盖透明压板的盖子和盖子上的门的扫描装置的方法,该方法包括使透明压板的一部分通过盖中的门曝光; 将用户标识符放置在盖的门中; 提供用户识别启动信号; 从光源发射光以照亮透明压板的暴露部分; 移动光传感器阵列以通过透明压板的暴露部分扫描用户标识符; 通过光电传感器阵列从扫描中提供用户标识符的数字化图像; 将数字化图像与存储的图案进行比较; 以及如果确定所述用户标识符的数字化图像与所存储的图案充分匹配,则授权所述扫描装置的功能。