JPH03146347A - Ink jet recording device - Google Patents

Abstract

PURPOSE:To prevent clogging of an ink jet head from happening and improve the recording properties by a method wherein members which constitute an ink chamber which communicates with an ink discharge port and an air chamber which communicates with an air discharge port are covered by a polyimide resin. CONSTITUTION:The surface of a body member 13 which constitutes an ink chamber is covered by a polyimide resin 14. Also, an air chamber is covered in the same manner. For the covering method of the body member 13 by the polyimide resin 14, the body member 13 is ultrasonic-washed by an organic solvent such as trichloroethylene or 1,1,1-trichloroethane, etc. Then, the body 13 is immersed in a tank which is filled with a polyimide solution having an appropriate viscosity. Then, the body member 13 is taken out of the polyimide tank, and after removing an excess solution, the body member 13 is baked at 350 deg.C to form a cover of the polyimide resin 14. The thickness of thus formed polyimide film is controlled in a range of several mum - several 10mum, and an ink is prevented from coming directly into contact with the body member 13, and erosion by the ink can be prevented from happening.

Description

DETAILED DESCRIPTION OF THE INVENTION FIELD OF INDUSTRIAL APPLICATION The present invention relates to an inkjet recording apparatus that records character images and the like by ejecting ink using airflow.

2. Description of the Related Art Recently, inkjet recording apparatuses have been widely used in the fields of color printers, computer terminal equipment, and the like. This inkjet recording apparatus is disclosed in, for example, Japanese Patent Application Laid-open No. 57-120452 and Japanese Patent Application Laid-Open No. 62-39251.
A configuration as described in the above publication is known.

A conventional inkjet recording apparatus will be described below with reference to FIG. An insulating air nozzle plate 2 is attached to the tip of the outer wall of the body member 13, and an insulating ink nozzle plate 3 is attached to the tip of the inner wall. Body member 1
An air chamber 8 is formed between the outer wall and the inner wall of the ink nozzle plate 3, an air layer 7 communicating with the air chamber 8 is formed between the air nozzle plate 2 and the ink nozzle plate 3, and an ink chamber 9 is formed inside the ink nozzle plate 3.
is formed. Further, the ink nozzle plate 3 is formed with an ink discharge port 4, and the air nozzle plate 2 is formed with an air discharge port 1 facing the ink discharge port 4.

Claims (1)

[Claims] An ink discharge port provided opposite to the air discharge port communicates with an ink chamber, and a first electrode exists within the ink chamber;
a second air outlet provided on the surface of the member forming the air outlet;
an electrode, a means for supplying air to the air outlet via an air chamber, and a means for supplying ink to the ink chamber, and the surfaces of the members constituting the ink chamber and the air chamber are made of polyimide resin. A potential difference is created between the first and second electrodes, the ink is drawn out from the ink discharge port in the direction of the air discharge port, and the ink is flown through the air flow flowing out of the air discharge port toward the outside. An inkjet recording device characterized by printing and recording.