Printing apparatus

Details Printing apparatus Printing apparatus

1996-04-02

2000-06-13

Barlow, John

Incremental printing of symbolic information

Ink jet

Controller

B41J 29377

Patent

active

060740353

ABSTRACT:
A printing apparatus has a printing head which is subjected to environmental temperature variation and generates a large amount of heat. Stable ejection of a printing liquid can be constantly performed by temperature control of the printing head. The printing apparatus having the printing head therein includes a fluid passage provided in contact with the head, a fluid supply device for supplying a fluid to the fluid passage, and a heater for controlling temperature of the supplied fluid to maintain the temperature of the fluid within a predetermined range. The printing head is provided with a water tube for cooling water, which water tube gradually varies its cross sectional area. By this, flow velocity of the cooling water is gradually increased on the upstream side and maintained to have a large constant flow velocity on the downstream side.

REFERENCES:
patent: 5017941 (1991-05-01), Drake
patent: 5291215 (1994-03-01), Nozawa et al.
patent: 5374944 (1994-12-01), Janosky et al.
patent: 5402160 (1995-03-01), Kadowaki et al.
patent: 5631676 (1997-05-01), Karz

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