Typewriting machines – For line-spacing by incremental rotation of platen – By electric-power drive
Patent
1985-01-22
1987-02-24
Pieprz, William
Typewriting machines
For line-spacing by incremental rotation of platen
By electric-power drive
400583, 400551, B41J 1142, B41J 2332
Patent
active
046453652
ABSTRACT:
A paper feed system in a printer includes a platen for supporting a recording paper sheet, a paper feed drive motor, and a transmission gear mechanism for transferring the rotation of the paper feed drive motor to the platen so as to conduct an automatic paper feed operation. The paper feed system further allows a manual paper feed operation wherein the platen is manually rotated. A detection system is provided which detects the manual paper feed operation. If the manual paper feed operation has been conducted before the automatic paper feed operation, a compensating paper drive is first conducted when an automatic paper feed instruction is developed. In the compensating paper drive, the platen is first driven to rotate in the reverse direction by a predetermined amount and, then to rotate in the forward direction by the same amount, thereby compensating for the displacement of the paper sheet location caused by the backlash of the transmission gear mechanism during the manual paper feed operation.
REFERENCES:
patent: 3749221 (1973-07-01), Busch
patent: 3844395 (1974-10-01), Mero et al.
Paulson, "Automatic Platen Indexing System", IBM Technical Disclosure Bulletin, vol. 18, No. 10, p. 335, 3/76.
Pieprz William
Sharp Kabushiki Kaisha
LandOfFree
Paper feed control in a printer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Paper feed control in a printer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Paper feed control in a printer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-106481