Color printer

Details Color printer Color printer

1995-12-21

1997-01-28

Yan, Ren

Typewriting machines

Sheet or web

Including sheet guide

400643, 101409, B41J 1310

Patent

active

055972519

ABSTRACT:
An image printing apparatus having high quality image printing capability due to minimized registration errors is provided. The image printing apparatus has a thermal head 18 and a platen roller 15 which is shorter in its circumference than the length of a pro-cut print medium 2 to be printed. An image is printed on the print medium by transporting the print medium and a ink ribbon 23 between the thermal head and the platen roller. A pair of clamp rings 3, 3 are rotatably and respectively provided approximately along both sides of the print medium, and each clamp ring has a circumference being same to or longer than the length pre-cut print medium, and has an internal gear 3b1. A clamper 5 is installed to connect the clamp rings together, and rotates with the print medium being clamped thereby. A capstan roller 7 is installed between the clamp rings and connected to a drive motor 8 to rotate constantly. A passively rotatable pinch roller 10 is installed and depressed to the capstan roller for transporting the print medium.

REFERENCES:
patent: 4990933 (1991-02-01), Halakeyama et al.
patent: 4999649 (1991-03-01), Saji et al.
patent: 5062723 (1991-11-01), Takeda et al.
patent: 5325777 (1994-07-01), Park
patent: 5362043 (1994-11-01), Grellman

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