Thermal transfer printer having intermediate transfer member

Details Thermal transfer printer having intermediate transfer member Thermal transfer printer having intermediate transfer member

1996-10-07

1998-08-18

Burr, Edgar S.

Printing

Work supporting members

Grippers

40012001, 1014151, B41F 130

Patent

active

057945306

ABSTRACT:
A thermal transfer printer comprises an intermediate transfer roller, a thermal print head for transferring portions of an ink layer formed on an ink ribbon to the circumference of the intermediate transfer roller in ink dots, and a pressure drum to be pressed against the intermediate transfer roller to transfer the ink dots from the intermediate transfer roller thereto, provided with grippers on its circumference and with end plates each having a cam section. The cam sections have a height from the circumference of the pressure drum greater than that of the upper ends of the grippers from the circumference of the pressure drum at its opposite ends to avoid the collision of the grippers with the intermediate transfer roller, and have a radially outward convex curved shape. The length of the bases of the cam sections is greater than the distance between two edges between the circumference of the pressure drum and the flat surface formed by cutting a portion of the circumference of the pressure drum.

REFERENCES:
patent: 117566 (1871-08-01), Plunket
patent: 4233899 (1980-11-01), Rebel
patent: 4330798 (1982-05-01), Heyer et al.
patent: 4357870 (1982-11-01), Rudolph et al.
patent: 5029834 (1991-07-01), Boldrini et al.
patent: 5402217 (1995-03-01), Kimura et al.
patent: 5711625 (1998-01-01), Takahashi

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