Sheet feed control method

Details Sheet feed control method Sheet feed control method

1989-12-08

1991-09-24

Skaggs, H. Grant

Sheet feeding or delivering

Feeding

By means to convey sheet

271266, 400320, 226 8, 226 45, 226168, B65H 702

Patent

active

050508580

ABSTRACT:
There is provided a sheet feed control method for feeding sheets at a predetermined pitch to the printing section of a printing machine that comprises a sheet feeding roller and a pair of small rollers provided one upstream and the other down stream and pressed against the outer periphery of said sheet feeding roller to sequentially catch and convey sheets, said sheet feed roller being rotated by means of a transmission gear mechanism driven by a source of driving force, said control method being characterized by that it is so designed as to be capable of calculating the time when the rear edge of a sheet passes between said sheet feed roller and said upstream small roller and offsetting or compensating for the preceding backlash of said transmission gear mechanism by modifying said pitch when the rear edge of said sheet passes between said sheet feed roller and said upstream small roller by an amount that corresponds to the amount of the backlash. A sheet feed control method according to the present invention can be effectively used for preventing any unintended blanks and overlaps of printing from occurring and ensuring an excellent quality of printing.

REFERENCES:
patent: 3741357 (1973-06-01), Krysiuk et al.
patent: 4015523 (1977-04-01), Evans et al.
patent: 4729557 (1988-03-01), Kiyohara
patent: 4734868 (1988-03-01), Delacy

Affiliated with

Also associated with

Rating

Sheet feed control method does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Sheet feed control method, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Sheet feed control method will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1692310