![ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS](/abs-image/US/2014/12/04/US20140354720A1/abs.jpg.150x150.jpg)
基本信息:
- 专利标题: ELEMENT SUBSTRATE, PRINTHEAD, AND PRINTING APPARATUS
- 专利标题(中):元件基板,打印头和打印设备
- 申请号:US14286098 申请日:2014-05-23
- 公开(公告)号:US20140354720A1 公开(公告)日:2014-12-04
- 发明人: Ryo Kasai , Nobuyuki Hirayama , Makoto Takagi
- 申请人: CANON KABUSHIKI KAISHA
- 申请人地址: JP Tokyo
- 专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人: CANON KABUSHIKI KAISHA
- 当前专利权人地址: JP Tokyo
- 优先权: JP2013-116247 20130531
- 主分类号: H03K19/0175
- IPC分类号: H03K19/0175 ; B41J2/07
摘要:
A recent inkjet printing apparatus includes a large-capacitance capacitor to stabilize a heater power supply. The presence of this capacitor requires a long time to drop the heater voltage at the time of power shutdown or the like. For this reason, an unwanted heater current may flow during the drop. To solve this problem, in this embodiment, a high voltage logic circuit is provided near a printing element, and a terminal is provided so that a signal can directly be input to this circuit. Heater driving control is performed via the terminal. This makes it possible to reliably control the heater regardless of the logic power supply state even if the logic voltage abruptly drops at the time of power shutdown or the like.
摘要(中):
近来的喷墨打印设备包括用于稳定加热器电源的大容量电容器。 该电容器的存在需要很长时间才能在电源关闭等时降低加热器电压。 因此,在下降期间可能会流过不需要的加热器电流。 为了解决这个问题,在本实施例中,在印刷元件附近设置有高电压逻辑电路,并且提供端子,使得信号可以直接输入到该电路。 加热器驱动控制通过终端进行。 这使得即使在停电等时逻辑电压突然下降,也可以可靠地控制加热器,而与逻辑电源状态无关。
公开/授权文献:
- US08944550B2 Element substrate, printhead, and printing apparatus 公开/授权日:2015-02-03
IPC结构图谱:
H | 电学 |
--H03 | 基本电子电路 |
----H03K | 脉冲技术 |
------H03K19/00 | 逻辑电路,即,至少有两个输入作用于一个输出的;倒向电路 |
--------H03K19/0175 | .耦合装置;接口装置 |