公开(公告)号：EP1270090A1

公开(公告)日：2003-01-02

申请号：EP02254473.8

申请日：2002-06-26

申请人： Scitex Digital Printing, Inc.

发明人： Katerberg, James A. ,  Cleary, Joseph P.

IPC分类号： B06B1/02 ,  B41J2/025

CPC分类号： B06B1/0246 ,  B41J2/025

摘要： A differential circuit (26) is used to compare the current to the drive transducers to a matched reference circuit (18). With the capacitive current from the piezoelectric transducer (14) canceled out in this manner, the resulting output current (44) provides a direct measure of the vibration amplitude of the drop generator. By adding an appropriate inductor (48) in parallel to the capacitive piezoelectric drive transducers, the loading of the drive electronics, or oscillator, is significantly reduced.

公开(公告)号：EP1013424A3

公开(公告)日：2001-01-03

申请号：EP99309534.8

申请日：1999-11-29

申请人： Scitex Digital Printing, Inc.

发明人： Simon, Robert J. ,  Cleary, Joseph P.

IPC分类号： B41J2/085

CPC分类号： B41J2/085

摘要： The present invention provides for adjustment of the charging voltage to a discrete section of the array, increasing the operating range of the printhead. The array of charging electrodes (22) are broken into segments with relative voltage adjustment to each segment. The voltage to the charge plate electrodes is then switchably controlled by discrete high voltage driver chips (56) to enable drop selection for printing. The integrated circuit within each chip converts serial input data at low voltages to parallel outputs at high voltage. The supplied high voltage to each of these chips is varied to compensate for impact variations on the catcher face caused by non-uniform parts. The compensation levels required for a set of aligned parts are stored within the printhead memory. The printhead will then function with the correct compensation levels on any system in which it is installed.

公开(公告)号：EP1013424A2

公开(公告)日：2000-06-28

申请号：EP99309534.8

申请日：1999-11-29

申请人： Scitex Digital Printing, Inc.

发明人： Simon, Robert J. ,  Cleary, Joseph P.

IPC分类号： B41J2/085

CPC分类号： B41J2/085

摘要： The present invention provides for adjustment of the charging voltage to a discrete section of the array, increasing the operating range of the printhead. The array of charging electrodes (22) are broken into segments with relative voltage adjustment to each segment. The voltage to the charge plate electrodes is then switchably controlled by discrete high voltage driver chips (56) to enable drop selection for printing. The integrated circuit within each chip converts serial input data at low voltages to parallel outputs at high voltage. The supplied high voltage to each of these chips is varied to compensate for impact variations on the catcher face caused by non-uniform parts. The compensation levels required for a set of aligned parts are stored within the printhead memory. The printhead will then function with the correct compensation levels on any system in which it is installed.

摘要翻译： 本发明提供了对阵列的离散部分的充电电压的调节，增加了打印头的工作范围。 充电电极（22）的阵列被分成具有对每个段的相对电压调整的段。 然后，通过离散的高电压驱动器芯片（56）可切换地控制对充电板电极的电压，以便能够进行打印的下降选择。 每个芯片内的集成电路将低电压的串行输入数据转换为高电压的并行输出。 提供给这些芯片中的每一个的高电压是变化的，以补偿由不均匀部件引起的捕获器面上的冲击变化。 一组对齐零件所需的补偿级别存储在打印头存储器中。 然后，打印头将在其安装的任何系统上运行正确的补偿级别。