B - Operations – Transporting – 41 – J
Patent
B - Operations, Transporting
41
J
197/110
B41J 33/14 (2006.01) B41J 33/22 (2006.01)
Patent
CA 1122149
OFF-THE-CARRIER RIBBON FEED AND DRIVE ON A HIGH SPEED MOVABLE-CARRIER IMPACT PRINTER ABSTRACT OF THE DISCLOSURE In order to maintain constant tension on a relatively long expanse of ribbon stretched along the carrier path in impact printer apparatus having off-the-carrier ribbon drive and feed, apparatus is provided for driving a first and a second reel in forward and reverse directions, each reel being adapted to support a portion of an inventory of a ribbon web running along said carrier path from one of said reels to the other at a constant speed differential between the portion of the web being taken up on one of the reels and the portion of the web being supplied on the other of said reels irrespective of the drive direction which com- prises a first inelastic drive belt for peripherally non- slip driving the web portion on the first reel and a sec- ond inelastic drive belt for peripherally non-slip driving the web portion on the second reel. A first drive means provided for selectively engaging and driving the first and second belts in the forward direction wherein the first reel takes up the ribbon; in this case, the second drive belt is driven at a speed slower than the first drive belt wherein the ribbon between the reels is maintained under a constant strain. Second drive means to provide for selectively engaging and driving the first and second belts in the reverse direction wherein the second reel takes up the web; the first drive belt in this case is driven at a speed slower than the second belt whereby the ribbon between the reels is also maintained under a constant strain. AT9-78-037
343630
International Business Machines Corporation
Kerr Alexander
LandOfFree
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