Ink supply system and ink supply method for stencil printer and ink container
AssigneeRiso Kagaku Corporation
InventorsHirohide Hashimoto, Masakatsu Arai, Kaoru Kimura, Kenji Oshima
Life of this patent
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Abstract
A piston-type ink container is inserted into an ink container holder of a stencil printer so that an ink suction nozzle of the stencil printer is fitted in a small diameter portion of the ink container to suck the ink in the ink container through an ink discharge port on the tip of the small diameter portion. A vacuum release mechanism at least partly releases vacuum in the space evacuated by the ink suction nozzle before the tip of the nozzle and the tip of the small diameter portion are aligned with each other when the ink container is drawn from the ink container holder.
Claims25
An ink supply system for a stencil printer comprising
- an ink container comprising a cylinder provided with a substantially cylindrical body portion and a small diameter portion which is formed on one end of the body portion and is provided with an ink discharge port on its free end, a piston inserted into the body portion of the cylinder to be slidable in the axial direction of the body portion along the inner peripheral surface thereof toward the small diameter portion, and ink filled in the space formed between the inner surface of the body portion and the surface of the piston facing the small diameter portion,
- an ink suction nozzle which is fitted with the small diameter portion to suck the ink in the ink container through the ink discharge port,
- a means for sealing the joint between the nozzle and the small diameter portion, and
- a vacuum release means which at least partly releases vacuum in the space evacuated by the ink suction nozzle before the tip of the nozzle and the tip of the small diameter portion are aligned with each other when the small diameter portion is drawn from the ink suction nozzle.
An ink container comprising a cylinder provided with a substantially cylindrical body portion and a small diameter portion which is formed on one end of the body portion and is provided with an ink discharge port on its free end, a piston inserted into the body portion of the cylinder to be slidable in the axial direction of the body portion along the inner peripheral surface thereof toward the small diameter portion, and ink filled in the space formed between the inner surface of the body portion and the surface of the piston facing the small diameter portion, and inserted into an ink container holder of a stencil printer so that an ink suction nozzle of the stencil printer is fitted with the small diameter portion to suck the ink in the ink container through the ink discharge port, wherein the improvement comprises
- a vacuum release means which at least partly releases vacuum in the space evacuated by the ink suction nozzle before the tip of the nozzle and the tip of the small diameter portion are aligned with each other when the ink container is drawn from the ink container holder.
A method of supplying ink to a stencil printer comprising the steps of
- inserting an ink container comprising a cylinder provided with a substantially cylindrical body portion and a small diameter portion which is formed on one end of the body portion and is provided with an ink discharge port on its free end, a piston inserted into the body portion of the cylinder to be slidable in the axial direction of the body portion along the inner peripheral surface thereof toward the small diameter portion, and ink filled in the space formed between the inner surface of the body portion and the surface of the piston facing the small diameter portion, into an ink container holder of the stencil printer so that an ink suction nozzle of the stencil printer is fitted with the small diameter portion to suck the ink in the ink container through the ink discharge port, and
- drawing out the ink container from the ink container holder of the stencil printer when the ink container is exhausted, wherein the improvement comprises the step of
- at least partly releasing vacuum in the space evacuated by the ink suction nozzle before the tip of the nozzle and the tip of the small diameter portion are aligned with each other when the small diameter portion is drawn out from the ink suction nozzle.
Dependencies are inferred from the claim text.