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    • 62. 发明授权
    • Digital-to-analog conversion circuitry incorporating a simplified testing circuit
    • 包含简化测试电路的数模转换电路
    • US06693570B2
    • 2004-02-17
    • US10283097
    • 2002-10-30
    • Shinsuke OhnishiDaisuke Takagi
    • Shinsuke OhnishiDaisuke Takagi
    • H03M110
    • H03M1/109H03M1/66
    • Digital-to-analog (DA) conversion circuitry with a simplified testing circuit includes a DA converter to which test data, initially “0”, may be applied. The DA converter feeds an analog voltage corresponding to the test data to a voltage holding circuit. Subsequently the test data is incremented to “1” and then converted to a corresponding analog voltage by the DA converter. A comparator compares the analog voltage corresponding to the test data “1” with the previous analog voltage held in the voltage holding circuit and corresponding to the test data “0”. When the test data is sequentially incremented by 1 (one) at intervals, the voltage output from the DA converter is higher than the voltage held in the voltage holding circuit while the DA converter operates normally. The function of the DA converter can be easily, rapidly tested by monitoring the output of the comparator.
    • 具有简化测试电路的数模(DA)转换电路包括DA转换器,可以应用测试数据,最初为“0”。 DA转换器将对应于测试数据的模拟电压馈送到电压保持电路。 随后,测试数据增加到“1”,然后由DA转换器转换成相应的模拟电压。 比较器将对应于测试数据“1”的模拟电压与保持在电压保持电路中的先前的模拟电压进行比较,并对应于测试数据“0”。 当测试数据间隔地顺序增加1(1)时,DA转换器输出的电压高于保持在电压保持电路中的电压,而DA转换器正常工作。 DA转换器的功能可以通过监视比较器的输出来轻松快速地测试。
    • 68. 发明授权
    • Liquid ejection head and image forming apparatus including the liquid ejection head
    • 液体喷射头和包括液体喷射头的成像设备
    • US08632161B2
    • 2014-01-21
    • US13231464
    • 2011-09-13
    • Masahiro KuwataDaisuke TakagiKazuo Haida
    • Masahiro KuwataDaisuke TakagiKazuo Haida
    • B41J2/14B41J2/16
    • B41J2/14274B41J2/055B41J2002/14419
    • A liquid ejection head includes a common-chamber formation member including a common chamber to supply liquid to pressure chambers communicating nozzles for ejecting liquid droplets, a flexible thin-film member to form part of a wall face of the common chamber, and a thin-film support member bonded to the thin-film member with glue. The support member has an opening or a recessed portion at least partially having a shape that is broad in an area proximal to a first surface of the support member bonded to the thin-film member and becomes narrower as an area of the opening or the recessed portion is more distant from the first surface. The opening or the recessed portion is sealed with the thin-film member. A portion of the thin-film member corresponding to the opening or the recessed portion has the glue on only a periphery area of the portion that contacts the support member.
    • 液体喷射头包括共用室形成构件,其包括公共室以将液体供应到用于喷射液滴的连通喷嘴的压力室,形成公共室的壁面的一部分的柔性薄膜构件, 薄膜支撑构件用胶粘在薄膜构件上。 支撑构件具有开口或凹部,该开口或凹部至少部分地具有在接近薄膜构件的支撑构件的第一表面附近的区域中宽的形状,并且作为开口的面积变窄或凹入 部分距离第一表面更远。 开口部或凹部用薄膜部件密封。 对应于开口或凹部的薄膜构件的一部分仅在与支撑构件接触的部分的周边区域上具有胶水。