Back to results
US 5,174,665 AGranted
Ink-supply system for a dot matrix printer
AssigneeSeiko Epson Corporation
InventorsTakashi Suzuki, Masanao Matsuzawa, Yoshinori Miyazawa
Life of this patent
Estimating the term…
Abstract
An ink-supply system for a dot matrix printer including an ink-supply tank having an ink-supply delivery port and an ink absorbing member having at least two separate porous members disposed as stacked layers, one of the porous members which is closer to the ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from the ink-supply delivery port.
Claims46
An ink-supply system for a dot matrix printer comprising:
- an ink-supply tank having an ink-supply delivery port;
- and
- an ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port, said ink absorbing member carrying substantially all of the ink said ink-supply tank is designed to carry.
An ink-supply system for a dot matrix printer comprising:
- an ink-supply tank having an ink-supply delivery port;
- and
- an ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port, said ink absorbing member substantially filling said ink-supply tank.
An ink-supply system for a dot matrix printer comprising:
- an ink-supply tank having an ink-supply delivery port;
- an ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port;
- and
- ink impregnated in the ink absorbing member under a pressure sufficiently low to substantially eliminate air bubbles in the ink absorbing member.
1 more element
An ink-supply system for a dot matrix printer head comprising:
- an ink-supply tank;
- an ink absorbing member contained within said ink-supply tank;
- means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printer head;
- and
- said ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means, said ink absorbing member carrying substantially all of the ink said ink-supply tank is designed to carry.
2 more elements
An ink-supply system for a dot matrix printer head comprising:
- an ink-supply tank;
- an ink absorbing member contained within said ink-supply tank;
- means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printer head;
- and
- said ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means;
- said ink absorbing member substantially filling said ink-supply tank.
3 more elements
An ink-supply system for a dot matrix printer head comprising:
- an ink-supply tank;
- an ink absorbing member contained within said ink-supply tank;
- means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printer head;
- said ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means, and
- ink impregnated in the ink-absorbing member under a pressure sufficiently low to substantially eliminate air bubbles in the ink absorbing member.
2 more elements
A dot matrix printer comprising:
- printing means for applying ink in a dot matrix to effect printing;
- and
- an ink supply means for delivering ink to said printing means comprising:
- an ink-supply tank having an ink-supply delivery port;
- and
- an ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port, said ink absorbing member carrying substantially all of the ink said ink-supply tank is designed to carry.
3 more elements
A dot matrix printer comprising:
- printing means for applying ink in a dot matrix to effect printing;
- and
- an ink supply means for delivering ink to said printing means comprising:
- an ink-supply tank having an ink-supply delivery port;
- and
- an ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port, said ink absorbing member substantially filling said ink-supply tank.
3 more elements
A dot matrix printer comprising:
- printing means for applying ink in a dot matrix to effect printing;
- and
- an ink supply means for delivering ink to said printing means comprising:
- an ink-supply tank;
- an ink absorbing member contained within said ink-supply tank;
- means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printing means;
- and
- said ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means, said ink absorbing member carrying substantially all of the ink said ink-supply tank is designed to carry.
5 more elements
A dot matrix printer comprising:
- printing means for applying ink in a dot matrix to effect printing;
- and
- an ink supply means for delivering ink to said printing means comprising:
- an ink-supply tank;
- an ink absorbing member contained within said ink-supply tank;
- means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printing means;
- and
- said ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means, said ink absorbing member substantially filling said ink-supply tank.
5 more elements
A dot matrix printer comprising:
- printing means for applying ink in a dot matrix to effect printing;
- and
- an ink supply means for delivering ink to said printing means comprising:
- an ink-supply tank;
- an ink absorbing member contained within said ink-supply tank;
- means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printing means;
- said ink absorbing member comprising at least two separate porous members disposed as stacked layers, one of said porous members which is closer to said ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means, and
- ink impregnated in the ink-absorbing member under a pressure sufficiently low to substantially eliminate air bubbles in the ink absorbing member.
5 more elements
A method of supplying ink to a dot matrix printer, comprising:
- providing an ink absorbing member within an ink-supply tank having an ink-supply delivery port;
- forming said ink absorbing member of at least two separate porous members disposed as stacked layers and so that said ink absorbing member substantially fills the ink-supply tank, one of the porous members which is closer to the ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material/of the other porous member more remote from said ink-supply delivery port;
- and
- withdrawing ink within said porous members through said ink-supply delivery port.
1 more element
A method of supplying ink to a dot matrix printer, comprising:
- providing an ink absorbing member within an ink-supply tank having an ink-supply delivery port;
- forming said ink absorbing member of at least two separate porous members disposed as stacked layers and so that said ink absorbing member substantially fills the ink-supply tank, one of the porous members which is closer to the ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port;
- withdrawing ink within said porous members through said ink-supply delivery port;
- and
- applying ink to said ink-supply tank so that said ink absorbing member carries substantially all of the ink which said ink-supply tank is designed to carry.
2 more elements
A method of supplying ink to a dot matrix printer, comprising:
- providing an ink absorbing member within an ink-supply tank having an ink-supply delivery port;
- forming said ink absorbing member of at least two separate porous members disposed as stacked layers and so that said ink absorbing member substantially fills the ink-supply tank, one of the porous members which is closer to the ink-supply delivery port being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink-supply delivery port;
- withdrawing ink within said porous members through said ink-supply delivery port;
- and
- applying ink to said ink absorbing member under a pressure sufficiently low to substantially eliminate air bubbles in the ink absorbing member.
2 more elements
A method of supplying ink to a dot matrix printer, comprising:
- providing an ink absorbing member within an ink-supply tank having a means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printer head;
- forming said ink absorbing member of at least two separate porous members disposed as stacked layers and so that said ink absorbing member substantially fills the ink-supply tank, one of the porous members which is closer to the ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means;
- and
- withdrawing ink within said porous members through said ink receiving and transmitting means.
1 more element
A method of supplying ink to a dot matrix printer, comprising:
- providing an ink absorbing member within an ink-supply tank having a means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printer head;
- forming said ink absorbing member of at least two separate porous members disposed as stacked layers and so that said ink absorbing member substantially fills the ink-supply tank, one of the porous members which is closer to the ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means;
- withdrawing ink within said porous members through said ink receiving and transmitting means;
- and
- applying ink to said ink-supply tank so that said ink absorbing member carries substantially all of the ink said ink-supply tank is designed to carry.
2 more elements
A method of supplying ink to a dot matrix printer, comprising:
- providing an ink absorbing member within an ink-supply tank having a means projecting into said ink-supply tank for receiving and transmitting ink from said ink absorbing member for delivery to said printer head;
- forming said ink absorbing member of at least two separate porous members disposed as stacked layers and so that said ink absorbing member substantially fills the ink-supply tank, one of the porous members which is closer to the ink receiving and transmitting means being made of a porous material having a smaller average pore size than the porous material of the other porous member more remote from said ink receiving and transmitting means;
- withdrawing ink within said porous members through said ink receiving and transmitting means;
- and
- applying ink to said ink absorbing member under a pressure sufficiently low to substantially eliminate air bubbles in the ink absorbing member.
2 more elements
Dependencies are inferred from the claim text.