Liquid ejecting apparatus and pressure-regulating device
First Claim
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1. A liquid ejecting apparatus, comprising:
- a liquid supply path which is able to supply a liquid from a liquid supply source to a liquid ejecting unit which ejects the liquid from a nozzle;
a pressure-regulating mechanism provided in the liquid supply path, the pressure regulating mechanism includinga liquid inflow part into which the liquid supplied from the liquid supply source flows,a liquid accommodation part which is able to accommodate the liquid in the interior thereof, and for which the volume of the interior changes by displacing a diaphragm portion;
a communication path through which the liquid inflow part and the liquid accommodation part communicate, andan on-off valve which enters an open state in which the liquid inflow part and the liquid accommodation part communicate from a closed state in which the liquid inflow part and the liquid accommodation part in the communication path do not communicate, when a pressure applied to a first surface which is an inner surface of the liquid accommodation part of the diaphragm portion is lower than the pressure applied to a second surface which is an outer surface of the liquid accommodation part of the diaphragm portion, and a difference between the pressure applied to the first surface and the pressure applied to the second surface is a predetermined value or more; and
a pressing mechanism which is provided to be able to press the diaphragm portion in a direction in which the volume of the liquid accommodation part is reduced, and which puts the on-off valve in an open state regardless of the pressure in the interior of the liquid inflow part by pressing the diaphragm portion,wherein the pressing mechanism includes a pressure regulator which is able to regulate a pressure within a pressure-regulating chamber formed on the second surface side of the diaphragm portion.
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Abstract
A liquid ejecting apparatus includes a liquid inflow unit provided in the liquid supply path which supplies a liquid to a liquid ejecting unit and into which the liquid flows, a liquid accommodation unit having a diaphragm section, a communication path through which the liquid inflow part and the liquid accommodation part communicate, and a pressure-regulating mechanism having an on-off valve which opens and closes the communication path in response to displacement of the diaphragm portion, and a pressing mechanism which puts the on-off valve in an open state regardless of the pressure in the liquid inflow unit by pressing the diaphragm portion.
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Citations
10 Claims
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1. A liquid ejecting apparatus, comprising:
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a liquid supply path which is able to supply a liquid from a liquid supply source to a liquid ejecting unit which ejects the liquid from a nozzle; a pressure-regulating mechanism provided in the liquid supply path, the pressure regulating mechanism including a liquid inflow part into which the liquid supplied from the liquid supply source flows, a liquid accommodation part which is able to accommodate the liquid in the interior thereof, and for which the volume of the interior changes by displacing a diaphragm portion; a communication path through which the liquid inflow part and the liquid accommodation part communicate, and an on-off valve which enters an open state in which the liquid inflow part and the liquid accommodation part communicate from a closed state in which the liquid inflow part and the liquid accommodation part in the communication path do not communicate, when a pressure applied to a first surface which is an inner surface of the liquid accommodation part of the diaphragm portion is lower than the pressure applied to a second surface which is an outer surface of the liquid accommodation part of the diaphragm portion, and a difference between the pressure applied to the first surface and the pressure applied to the second surface is a predetermined value or more; and a pressing mechanism which is provided to be able to press the diaphragm portion in a direction in which the volume of the liquid accommodation part is reduced, and which puts the on-off valve in an open state regardless of the pressure in the interior of the liquid inflow part by pressing the diaphragm portion, wherein the pressing mechanism includes a pressure regulator which is able to regulate a pressure within a pressure-regulating chamber formed on the second surface side of the diaphragm portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A pressure-regulating device, comprising:
a pressure-regulating mechanism provided in a liquid supply path which is able to supply a liquid from a liquid supply source to a liquid ejecting unit which ejects the liquid from a nozzle, the pressure-regulating mechanism including a liquid inflow part into which the liquid supplied from the liquid supply source flows, a liquid accommodation part which is able to accommodate the liquid in the interior thereof, and for which the volume of the interior changes by displacing a diaphragm portion; a communication path through which the liquid inflow part and the liquid accommodation part communicate, and an on-off valve which enters an open state in which the liquid inflow part and the liquid accommodation part communicate from a closed state in which the liquid inflow part and the liquid accommodation part in the communication path do not communicate, when a pressure applied to a first surface which is an inner surface of the liquid accommodation part of the diaphragm portion is lower than the pressure applied to a second surface which is an outer surface of the liquid accommodation part of the diaphragm portion, and a difference between the pressure applied to the first surface and the pressure applied to the second surface is a predetermined value or more; and a pressing mechanism which is provided to be able to press the diaphragm portion in a direction in which the volume of the liquid accommodation part is reduced, and which puts the on-off valve in an open state regardless of the pressure in the interior of the liquid inflow part by pressing the diaphragm portion, wherein the pressing mechanism includes a pressure regulator which is able to regulate a pressure within a pressure-regulating chamber formed on the second surface side of the diaphragm portion.
Specification