Pressurized fluid printer arrangement having transient fluid pressure drop buffering means
AssigneeMarkpoint System AB
InventorJiri Vonasek
Life of this patent
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Abstract
Device for printers using pressurized fluid medium for recording characters on an information carrier. The device is formed with at least one buffer chamber placed in direct connection with a fluid chamber, which constitutes one side of a wall or plate provided with a discharge. The buffer chamber includes an elastic or at least flexible dividing wall between the fluid chamber and the buffer chamber. The buffer chamber has a relatively small volume and is closed and, in one embodiment, is such that it allows penetration or migration of gas molecules only through the dividing wall.
Claims10
In a device for printing using a pressurized fluid medium for recording characters on an information carrier and including a valve housing containing therewithin a fluid chamber for the pressurized fluid medium, discharge openings provided in a wall of the fluid chamber for discharging therethrough the pressurized fluid medium from said fluid chamber, and valve means arranged for controlling the opening and closing of the discharge openings at high opening and closing frequencies in a predetermined manner, the improvement comprising:
- at least one buffer chamber means provided within said valve housing closely proximate to and in direct fluid pressure communication with said fluid chamber and said discharge openings thereof for directly absorbing short duration transient pressure changes in said pressurized fluid medium in said fluid chamber and at said discharge openings upon said discharge openings being opened by said valve means.
Dependencies are inferred from the claim text.