公开(公告)号：US3513774A

公开(公告)日：1970-05-26

申请号：US3513774D

申请日：1968-07-01

Applicant: IBM

Inventor： PAWLETKO JOSEPH P ,  ROSS CHARLES O

IPC: B41J9/46 ,  B41J9/50 ,  G06K15/06 ,  B41J9/30 ,  H01H47/32

CPC classification number: B41J9/50

公开(公告)号：US3866533A

公开(公告)日：1975-02-18

申请号：US31830972

申请日：1972-12-26

Applicant: IBM

Inventor： GILBERT RICHARD L ,  HAMILTON JOHN G ,  HASEGAWA TATSUO ,  ROSS CHARLES O

IPC: B41J7/36 ,  B41J1/20 ,  B41J9/46 ,  B41J9/48 ,  G06K15/06 ,  G06K15/08 ,  B41J7/92

CPC classification number: B41J1/20 ,  B41J9/48

Abstract: Impression control for an impact printer is provided by changing the width of the pulse applied to the print hammers in accordance with the thickness of the forms on which printing is being performed and in accordance with the voltage of the source energizing the print hammers, so as to maintain a constant impact force to provide uniform print density for different forms thicknesses. Misregistration of characters caused by a variation in the rate of movement of the print hammer is compensated for by changing the start time of the pulse energizing the hammer.

Abstract translation: 冲击式打印机的印象控制是通过根据正在进行打印的形式的厚度和根据对打印锤激励的源的电压来改变施加到打印锤的脉冲的宽度来提供的，以便 以保持恒定的冲击力，以为不同的形状厚度提供均匀的印刷密度。 通过改变激励锤的脉冲的开始时间来补偿由打印锤的移动速率的变化引起的字符的对准。