公开(公告)号：US4673951A

公开(公告)日：1987-06-16

申请号：US780821

申请日：1985-09-27

申请人： Masayuki Mutoh ,  Shinji Kamiyama

发明人： Masayuki Mutoh ,  Shinji Kamiyama

IPC分类号： B41J2/205 ,  B41J2/115 ,  B41J2/21 ,  B41J2/52 ,  H04N1/23 ,  G01D15/18

CPC分类号： B41J2/2128 ,  B41J2/115 ,  B41J2/185

摘要： There is disclosed an ink jet printer of Hertz type. An ink jet is continuously forced out from a nozzle and broken into minute droplets. The droplets are selectively charged by applying pulse voltage. A row of charged droplets is removed and a row of uncharged droplets proceeds to the record medium and forms a dot thereon. The pulse width is controlled in order to allow a number of droplets included in one row of droplets, so that the diameter of dot is altered. The ink jet printer is able to produce high degree of tones by alteration of number of uncharged droplets in combination of the dot pattern moduration method or the dither method.

摘要翻译： 公开了一种赫兹型喷墨打印机。 喷墨头从喷嘴中不断地被迫出来并分成几滴。 通过施加脉冲电压来选择性地充电液滴。 一排带电的液滴被去除，一排不带电的液滴进入记录介质并在其上形成点。 控制脉冲宽度以允许包含在一排液滴中的数个液滴，从而改变点的直径。 喷墨打印机能够通过点阵图形修改方法或抖动方法的组合改变不带电液滴的数量而产生高度的色调。

公开(公告)号：US5430550A

公开(公告)日：1995-07-04

申请号：US898199

申请日：1992-06-12

申请人： Yoshiyuki Hashimoto ,  Hideaki Kusano ,  Shinji Kamiyama ,  Seiichi Mogawa

发明人： Yoshiyuki Hashimoto ,  Hideaki Kusano ,  Shinji Kamiyama ,  Seiichi Mogawa

IPC分类号： H04N1/047 ,  H04N1/10 ,  H04N1/193 ,  H04N1/401 ,  H04N1/387 ,  H04N1/04

CPC分类号： H04N1/401 ,  H04N1/047 ,  H04N1/1013 ,  H04N1/193 ,  H04N2201/0404 ,  H04N2201/041 ,  H04N2201/0416 ,  H04N2201/04729 ,  H04N2201/04789

摘要： In an image reader a frame image of a microfilm is projected on a line sensor with a projection lens and read. The projection lens is movable in the main scanning direction by a driving motor. The line sensor is movable in the subscanning direction by a driving motor. The line sensor is moved in the subscanning direction to apply preliminary scanning and detect positional deviation in the main scanning direction of the projected image, and the projection lens is moved in the main scanning direction corresponding to quantity of the positional deviation. When the frame image is inclined, it is rotated relatively to the main scanning direction by a prism to correct the inclination, and the projection lens is moved in the main scanning direction thereafter to correct positional deviation in the same direction.

摘要翻译： 在图像读取器中，缩微胶片的帧图像被投影在具有投影透镜的线传感器上并被读取。 投影透镜可以通过驱动电机在主扫描方向上移动。 线传感器可通过驱动电机在副扫描方向上移动。 线传感器沿副扫描方向移动以进行预扫描并检测投影图像的主扫描方向上的位置偏差，并且投影透镜沿与主要扫描方向相对应的位置偏差量移动。 当帧图像倾斜时，其通过棱镜相对于主扫描方向旋转以校正倾斜度，并且投影透镜之后在主扫描方向上移动以校正沿相同方向的位置偏差。