US 11,833,844 B2
Device for fixing platen roller for printing apparatus and printing apparatus including the same
Jin Gwan Kim, Seongnam-si (KR); and Jin Kook Kim, Seongnam-si (KR)
Assigned to BIXOLON CO., LTD., Seongnam-si (KR)
Filed by BIXOLON CO., LTD., Seongnam-si (KR)
Filed on Apr. 16, 2021, as Appl. No. 17/232,882.
Claims priority of application No. 10-2020-0051257 (KR), filed on Apr. 28, 2020; application No. 10-2020-0051258 (KR), filed on Apr. 28, 2020; application No. 10-2020-0051259 (KR), filed on Apr. 28, 2020; application No. 10-2020-0061560 (KR), filed on May 22, 2020; and application No. 10-2021-0013669 (KR), filed on Jan. 29, 2021.
Prior Publication US 2021/0331493 A1, Oct. 28, 2021
Int. Cl. B41J 11/04 (2006.01); B41J 13/076 (2006.01); B41J 29/17 (2006.01); B41J 2/35 (2006.01); B41F 31/30 (2006.01); B41J 11/24 (2006.01); B41J 2/32 (2006.01); B41J 29/13 (2006.01); B41J 2/165 (2006.01)
CPC B41J 29/17 (2013.01) [B41F 31/304 (2013.01); B41J 2/32 (2013.01); B41J 2/35 (2013.01); B41J 11/04 (2013.01); B41J 11/24 (2013.01); B41J 2/165 (2013.01); B41J 29/13 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A device for fixing a platen roller for a printing apparatus, the platen roller being installed in a housing of a printing apparatus and pulling printing paper while being rotated by a driving member, the device comprising:
a fixing frame installed in the housing of the printing apparatus;
roller bearings respectively coupled to both ends of the platen roller in a longitudinal direction of the platen roller, and configured to allow the platen roller to be rotated;
bearing holders installed on the fixing frame, and configured to provide coupling portions for the roller bearings and to allow the roller bearings to enter and exit in a horizontal direction corresponding to the longitudinal direction of the platen roller; and
a locking part configured to fix the platen roller and the roller bearings to the bearing holders in a state of preventing horizontal movement of the platen roller and the roller bearings while restraining at least one of the both ends of the platen roller to the bearing holder,
wherein the locking part comprises:
a locking lever pivotably coupled to the fixing frame via a hinge pin while being adjacent to the bearing holder, and configured to rotate around the hinge pin, be fitted into and caught on portions of the platen roller, and come into close contact with the roller bearing, thereby preventing horizontal movement of the platen roller and the roller bearings; and
an elastic member configured to provide an elastic force to the locking lever to provide a restoring force to the locking lever when the locking lever is rotated to separate the platen roller.