公开(公告)号：US5291824A

公开(公告)日：1994-03-08

申请号：US755371

申请日：1991-09-05

申请人： Yoshikane Matsumoto ,  Hiroto Inagawa ,  Shingo Nakahara ,  Youichi Hujita

发明人： Yoshikane Matsumoto ,  Hiroto Inagawa ,  Shingo Nakahara ,  Youichi Hujita

IPC分类号： B41J9/10 ,  B41J9/28 ,  B41J3/00

CPC分类号： B41J9/28 ,  B41J9/10

摘要： A dot line printer provided with an ordinary dot density printing mode, a low dot density or draft printing mode and a high dot density printing mode. A hammer bank provided with a plurality of printing hammers is reciprocally movable in a shuttling direction for dot impressions when the hammer bank is moved through a printing region, and the moving direction of the hammer bank is reversed at a reversing region where a printing sheet is fed in a line to line direction. A shuttle cam is provided which is drivingly connected to the hammer bank. The shuttle cam has a cam profile capable of providing a cam lift characteristic approximately intermediate between a cam lift characteristics of the ordinary printing mode and that of the low dot density printing mode. A shuttling velocity of the hammer bank is changed in accordance with the selected printing mode and position of the hammer bank.

摘要翻译： 具有普通点密度打印模式，低点密度或草稿打印模式和高点密度打印模式的点阵式打印机。 当锤片组移动通过打印区域时，设置有多个打印锤的锤组件可以在穿梭方向上往复移动，用于点印模，并且锤片组的移动方向在打印片材的反转区域反转 沿线行进方向。 提供了一种穿梭凸轮，其被驱动地连接到锤子组。 往复凸轮具有能够提供大致在普通打印模式的凸轮升程特性和低点密度打印模式的凸轮提升特性之间的凸轮提升特性的凸轮轮廓。 根据所选择的打印模式和锤组的位置改变锤组的穿梭速度。

公开(公告)号：US5215392A

公开(公告)日：1993-06-01

申请号：US704246

申请日：1991-05-22

申请人： Satoru Tobita ,  Yoshikane Matsumoto ,  Youichi Hujita

发明人： Satoru Tobita ,  Yoshikane Matsumoto ,  Youichi Hujita

IPC分类号： B41J15/16

CPC分类号： B41J15/16

摘要： In a dot matrix line printer, a pair of pin tractors for feeding a print paper are operatively connected to a paper feed motor, and a tension roller mechanism disposed beneath a platen is operatively connected to a separately provided drive motor. To eliminate a paper slack which may occur when the feeding of the print paper is stopped after creating many blank lines, the drive motor is energized for a short period of time immediately before the paper feeding is ended. The tension roller mechanism which is made up of a plurality of rollers pulls the print paper in a direction opposite the paper feeding direction to thus prevent the print paper from slackening.

摘要翻译： 在点阵线打印机中，用于馈送打印纸的一对销拖拉机可操作地连接到供纸马达，并且布置在压板下方的张紧辊机构可操作地连接到单独提供的驱动马达。 为了消除在创建许多空白线后停止打印纸的供纸时可能发生的纸张松弛，驱动电机在进纸结束之前立即通电短时间。 由多个辊构成的张紧辊机构沿与进纸方向相反的方向拉动打印纸，从而防止打印纸松弛。

公开(公告)号：US5059047A

公开(公告)日：1991-10-22

申请号：US478854

申请日：1990-02-12

申请人： Takashi Nakamura ,  Masao Miyasaka ,  Toshio Hiki ,  Youichi Hujita ,  Kazunari Kodama

发明人： Takashi Nakamura ,  Masao Miyasaka ,  Toshio Hiki ,  Youichi Hujita ,  Kazunari Kodama

IPC分类号： B41J19/18 ,  B41J2/245 ,  B41J2/515 ,  B41J19/20

CPC分类号： B41J19/202

摘要： A shuttle printer carries out printing on a printing paper when a hammer bank shuttles back and fourth. At the beginning of the hammer bank reversal at the right or left end in the hammer bank shuttling path, a braking force is exerted to a shuttle motor which drives the hammer bank and an acceleration force is exerted to the shuttle motor immediately after the hammer bank turns around. In order to set a reversing duration of the hammer bank at constant, the braking force and the acceleration force exerting durations are prolonged from a predetermined minimum to a value when the hammer bank reversing duration is shortened to an extent as desired, whereby a printing paper can be fed a predetermined amount within the hammer bank reversing duration as desired.

摘要翻译： 梭子打印机在打印纸上打印时，在打印纸打印时，打印纸打印后再打印。 锤锤组在锤库行驶路径右侧或左端反转的开始处，对驱动锤组的梭电机施加制动力，并且在锤锤组之后立即向往复电动机施加加速力 转过（身）来。 为了将锤组的反转持续时间设定为恒定，当锤组反转持续时间缩短到期望的程度时，制动力和施加持续时间的加速力从预定最小值延长到值，由此打印纸 可以根据需要在锤片组反转持续时间内进给预定量。