Image building apparatus

Details Image building apparatus Image building apparatus

1985-05-17

1986-07-01

Goldberg, E. A.

Recorders

Thermal recording

346106, 346136, 400120, G01D 1510

Patent

active

045983003

ABSTRACT:
An improved image building apparatus for building color image on paper by transfering thereto a plurality of coloring agents on thermal transfer ribbon by means of a thermal head while reciprocably conveying paper by rotating a platen is disclosed. To assure that paper is firmly held on the surface of the platen the apparatus includes two groups of thrust rollers and a printing head actuating mechanism for displacing the printing head toward and away from the platen. Thus, reciprocably movable paper is brought in close contact with the surface of the platen at least at two points under the effect of thrust force given by the thrust rollers and the printing head without occurrence of dislocation of color transference and the area where no image is built at both the leading and tail ends of paper can be minimized. Further, to assure that paper is smoothly conveyed while it is wound partially about the platen the apparatus is provided with a pair of paper guide members at the position located in the proximity of the thrust rollers while a properly determined distance is maintained between the platen and the paper guide members. A pair of thermal transfer ribbon guide members are formed integral with the printing head so as to allow thermal transfer ribbon to extend therebetween in the stretched state.

REFERENCES:
patent: 4496955 (1985-06-01), Maeyama et al.
patent: 4517590 (1985-05-01), Nagashima et al.
patent: 4532525 (1985-07-01), Takahashi

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