Ink jet recording apparatus

Claim 1

A compact ink jet recording apparatus comprising: a compact recording liquid container having an elastic plug provided in an aperture formed in a wall of said container, wherein said plug prevents escape of recording liquid from said container; a recording head integral with said container for effecting printing, while moving longitudinally along printing paper, by discharging recording liquid supplied from said container; a vent; a vent filter mounted above the vent, for preventing the passage of the recording liquid while permitting the passage of gases therethrough; pressurizing means provided above said vent filter, to manually apply pressure to the interior of said recording liquid container through said vent filter; and a recording liquid supply device including: a cylindrical supply body for storing recording liquid therein; a piston member fitted to said body for manually changing volume of the recording liquid stored in said body; and a ink supply member mounted to said body for communicating with the interior of said body.