公开(公告)号：EP0044944B1

公开(公告)日：1985-03-20

申请号：EP81104804.0

申请日：1981-06-23

申请人： International Business Machines Corporation

发明人： Loughridge, Mark

IPC分类号： B41J7/92 ,  B41J1/60 ,  B41J5/26

CPC分类号： B41J7/94

公开(公告)号：EP0044944A3

公开(公告)日：1982-12-15

申请号：EP81104804

申请日：1981-06-23

申请人： International Business Machines Corporation

发明人： Loughridge, Mark

IPC分类号： B41J05/26 ,  B41J01/60

CPC分类号： B41J7/94

摘要： A single print element of a typewriter impacts a record sheet at one of two velocities depending on the area of coverage of the selected character. A vane (90), which extends between the character case shift levers (32) and is pivotally connected thereto, is disposed in the path of movement of all of the character selection interposers (28). Vane (90) has an opening (94, 97) for each interposer when the print element is to impact the record sheet at the higher velocity so that vane (90) is not engaged by the interposer (28) during movement thereof. If the print element is to strike the record sheet at the lower velocity, then vane (90) has a portion for engagement by the moving interposer (28). Movement of vane (90), when engaged by an interposer (28), causes movement of a connecting link (102) which in turn shifts the position of a cam follower cooperating with a dual-cam velocity control device.

公开(公告)号：EP0044944A2

公开(公告)日：1982-02-03

申请号：EP81104804.0

申请日：1981-06-23

申请人： International Business Machines Corporation

发明人： Loughridge, Mark

IPC分类号： B41J7/92 ,  B41J1/60 ,  B41J5/26

CPC分类号： B41J7/94

摘要： A single print element of a typewriter impacts a record sheet at one of two velocities depending on the area of coverage of the selected character. A vane (90), which extends between the character case shift levers (32) and is pivotally connected thereto, is disposed in the path of movement of all of the character selection interposers (28). Vane (90) has an opening (94, 97) for each interposer when the print element is to impact the record sheet at the higher velocity so that vane (90) is not engaged by the interposer (28) during movement thereof. If the print element is to strike the record sheet at the lower velocity, then vane (90) has a portion for engagement by the moving interposer (28). Movement of vane (90), when engaged by an interposer (28), causes movement of a connecting link (102) which in turn shifts the position of a cam follower cooperating with a dual-cam velocity control device.