Imprinter including an elastic member for elastically supporting the roller shaft

1. An imprinter, comprising:

a printing base for mounting a card and a print paper to be imprinted on a predetermined area thereof;

a carriage that is movable above the printing base; a roller that is made of a hard material and is provided as housed within the carriage for transcribing information represented as embossed on a card;

a roller shaft for fixedly supporting the roller;

outer bearings for rotatably supporting axial ends of the roller shaft;

inner bearings, disposed entirely outside the roller, and, in an axial direction of the roller shaft, entirely between axial ends of the outer bearings closest to the roller and the roller, for rotatably supporting the roller shaft at a position of a predetermined height from a card mounting surface of the printing base; and

an elastic member provided which exerts pressure on the inner bearings in a single direction which is perpendicular to the axial direction of the roller shaft so as to support by pressing downward an outer peripheral portion of the inner bearings,

wherein the elastic member is configured so as to be deformed during imprinting operation to cause the roller to move in a vertical direction relative to the outer bearings so that the embossed information of the card is transcribed onto the print paper while there is no relative movement between the roller shaft and the inner bearing, the roller shaft moves relative to the outer bearing.

2. The imprinter as defined in claim 1 , wherein said elastic member includes a plurality of coil springs.

3. The imprinter as defined in claim 1 , wherein said elastic member includes a soft synthetic gum.

4. The imprinter as defined in claim 1 , further comprising an adjusting member configured so as to be manually operated to adjust a height of said roller from said printing base, thereby to adjust a density of transcription.

5. The imprinter as defined in claim 1 , wherein, in the axial direction of the roller shaft, the entirety of the inner bearings is located outside the outer bearings.

6. The imprinter as defined in claim 1 , wherein, in the axial direction of the roller shaft, the entirety of the inner bearings is distanced from edges of the outer bearings, said edges of the outer bearings facing the roller.

7. The imprinter as defined in claim 1 , wherein the axial ends of the roller shaft abut side surfaces of the outer bearings.

8. The imprinter as defined in claim 7 , wherein the elastic member moves the roller shaft in the vertical direction relative to the outer bearings.

9. The imprinter as defined in claim 1 , wherein, in the axial direction of the roller shaft, each of the inner bearings is located away, with a predetermined distance, from the roller.

10. The imprinter as defined in claim 1 , wherein the elastic member abuts the inner bearings to exert the pressure on the inner bearings.

11. The imprinter as defined in claim 1 , wherein the elastic member is in a direct contact with upper surfaces of the inner bearings to exert the pressure on the inner bearings.

12. The imprinter as defined in claim 1 , wherein the inner bearings are configured to move perpendicularly to the axial direction of the roller shaft by the elastic member.