EP 0000413 B1 19801210 - DRIVE MECHANISM FOR PRINTERS, EITHER FOR PROGRESSING OR REVERSING AN INK RIBBON, OR FOR RETRACTING THE PRINTING HEAD
Title (en)
DRIVE MECHANISM FOR PRINTERS, EITHER FOR PROGRESSING OR REVERSING AN INK RIBBON, OR FOR RETRACTING THE PRINTING HEAD
Publication
Application
Priority
- DE 2731593 A 19770713
- DE 2731607 A 19770713
Abstract (en)
[origin: US4265551A] In order to enable ink ribbon transport and ribbon reversal on the one hand and on the other hand the withdrawal of the printing head from the platen to be performed by means of only a single motor, a pawl-and-ratchet device is provided between the drive gearwheels for the reel holders and the drive motor. The cord for the withdrawal of the printing head is connected to a deflection lever which follows the profile of a cam disc of a cam mechanism, which is connected via a further pawl-and-ratchet device to the common shaft driven by the electric motor. The two pawl-and-ratchet devices drive in opposed directions. The common drive motor is reversible and is electrically controlled by the cam mechanism.
IPC 1-7
IPC 8 full level
B41J 23/02 (2006.01); B41J 29/18 (2006.01); B41J 33/518 (2006.01); B41J 19/68 (2006.01); F16H 35/00 (2006.01)
CPC (source: EP US)
B41J 23/025 (2013.01 - EP US); B41J 33/518 (2013.01 - EP US)
Designated contracting state (EPC)
DE FR GB
DOCDB simple family (publication)
EP 0000413 A1 19790124; EP 0000413 B1 19801210; DE 2860289 D1 19810219; IT 1098666 B 19850907; IT 7825502 A0 19780710; JP S5419813 A 19790214; US 4265551 A 19810505
DOCDB simple family (application)
EP 78200075 A 19780703; DE 2860289 T 19780703; IT 2550278 A 19780710; JP 8413878 A 19780712; US 91840678 A 19780623