公开(公告)号：DE2344923A1

公开(公告)日：1974-03-14

申请号：DE2344923

申请日：1973-09-06

Applicant: IBM

Inventor： BONAFINO EDWARD JOSEPH ,  GILBERT RICHARD LYMAN ,  MAKO JOHN

IPC: B41J1/20 ,  B41J7/96 ,  G06K15/00 ,  G06K15/06

Abstract: A type belt having spaced apart type characters thereon, also has a plurality of timing marks, one for keeping track of the different character positions. A transducer is positioned to sense the timing marks as they move in a horizontal direction for operating print controls in timed relation with the positions of the type characters as they move along the print line and also detect differences in amplitude of the transducer output signals caused by vertical movement of the type belt. The output is used to operate indicating means which tells which position will print next, and which can also be used to enable the operator to detect misregistration of the type belt, so that the operator may correct it.

公开(公告)号：DE2421922A1

公开(公告)日：1974-11-21

申请号：DE2421922

申请日：1974-05-07

Applicant: IBM

Inventor： BONAFINO EDWARD JOSEPH

IPC: G03G15/22 ,  B41J11/26 ,  B41J11/28 ,  B41J15/24 ,  B65H20/20 ,  G03G15/00 ,  G06K15/16

Abstract: This is an improved sprocket pin type forms feeding device used in the feeding of continuous, series connected, marginally perforated, multi-layered record forms. The sprocket pin type forms feeding device for multi-layered paper strips comprises a pair of sprocket wheels mounted on a rotatably driven shaft, with the sprocket wheels including a tractor drum portion having a base diameter and a tractor tire element securely attached to the tractor drum for increasing the base diameter so as to functionally overdrive the last or bottom-most copy of the multi-layered forms at the same rate of speed as the first copy and to thereby prevent shingling of the paper layers of the multi-layered forms.