公开(公告)号：US3623775A

公开(公告)日：1971-11-30

申请号：US3623775D

申请日：1970-06-30

Applicant: IBM

Inventor： ARSENEAULT PAUL J ,  FEIERABEND LOUIS B ,  GOLZ WILLIAM R ,  LUHRS OTTO R ,  SMITH JAMES T

IPC: G11B23/113 ,  G11B23/12 ,  B65G53/00

CPC classification number: G11B23/113 ,  G11B23/12

Abstract: Two cartridges are shown herein which have the capability of storing a folded endless loop of tape. The cartridges are designed so that by pneumatic pressure the loop of tape may be unloaded from the cartridge by a controlled unfolding and reloaded into the cartridge by a controlled folding. Two cartridges are shown, one containing a porous wall to permit the appropriate air flow to control the folding and unfolding, and the other containing air passages in nonporous walls to control the folding and unfolding.

公开(公告)号：US3678220A

公开(公告)日：1972-07-18

申请号：US3678220D

申请日：1971-05-26

Applicant: IBM

Inventor： LUHRS OTTO R

IPC: G01D5/14 ,  G01D5/247 ,  G11B5/584 ,  G11B15/60 ,  G11B23/30 ,  G11B5/56 ,  G11B21/10

CPC classification number: G01D5/14 ,  G01D5/247 ,  G11B5/584 ,  G11B15/602 ,  G11B23/30

Abstract: Lateral position of a moving web is detected to an accuracy of tenths of a mil. In particular, a moving magnetic tape is monitored for shifts in lateral position by detecting ''''V'''' shaped marks on the tape. Each arm of the ''''V'''' is monitored by a separate transducer. The transducers are positioned relative to the ''''V'''' mark so that, for a predetermined lateral position of the moving tape, there is no time difference between each transducer reading its corresponding arm of the ''''V'''' mark. Shifts in lateral position from the predetermined position are then detected by the time difference between pulses from each transducer. The lateral position detector may be used in a servo loop to guide the web so that it always remains at the predetermined lateral position. In addition, by inserting an artificial time difference in the servo loop, the lateral position of the web may be indexed to any given position relative to the predetermined position.

Abstract translation: 检测到移动幅材的横向位置为十分之一密耳的精度。 特别地，通过检测带上的“V”形标记来监测移动的磁带的横向位置的偏移。 “V”的每个臂由单独的换能器监控。 传感器相对于“V”标记定位，使得对于移动带的预定横向位置，每个换能器之间没有时间差读取其对应的“V”标记的臂。 然后通过来自每个换能器的脉冲之间的时间差来检测来自预定位置的横向位置的移动。 横向位置检测器可以用于伺服回路中以引导幅材，使得其始终保持在预定的横向位置。 此外，通过在伺服回路中插入人造时间差，卷筒纸的横向位置可以被索引到相对于预定位置的任何给定位置。