Abstract: A liquid discharge head cartridge includes a recording element unit having a plate member with liquid supply paths for supplying liquid to a recording element base plate for recording by discharging the liquid; a liquid supply unit portion having a communication passage for conducting liquid from a liquid supply source; and an elastic sealing member that forms a seal between one end portion of the liquid supply paths of the plate member and an end portion of the communication passage facing the one end portion of the liquid supply paths. The elastic sealing member is provided with liquid flow paths communicating with the liquid supply paths and the communication passage. The liquid supply unit portion and the recording element unit are adhesively bonded with each other at locations other than those having the elastic sealing member arranged thereon.

Abstract: An ink jet recording head has a plurality of discharge energy generating devices for discharging recording liquid; a recording element base plate arranged on the face opposite the surface where the devices are arranged, having a plurality of recording liquid supply ports for supplying recording liquid to the devices; and a supporting member that holds and fixes the recording element base plate. For the supporting member, a plurality of recording liquid supply paths are arranged to supply recording liquid to the supply ports of the recording element base plate, respectively, and the width of the supply paths is formed to be smaller than the opening width of the inlet portions of the supply ports. Further, stepped portions created between the respective supply paths and supply ports are buried by a bonding agent forced out from the bonding face of the recording element base plate and the supporting member.

Abstract: A liquid container having a negative pressure generating member containing chamber containing therein a negative pressure generating member formed of a fiber material and provided with a liquid supplying portion and an atmosphere communicating portion, a liquid containing chamber provided with a communicating portion communicating with the negative pressure generating member containing chamber and forming a substantially hermetically sealed space and storing therein liquid to be supplied to the negative pressure generating member, and a partition wall for partitioning the negative pressure generating member containing chamber and the liquid containing chamber and forming the communicating portion is provided with gas introduction blocking means cooperating with the partition wall and the liquid contained in the negative pressure generating member containing chamber to block the introduction of gas from the communicating portion into the liquid containing chamber except during the supply of the liquid from the

Abstract: An ink jet recording head includes a plurality of recording element substrates, a supply port, a supporting member for supporting the recording element substrates, an electric contact substrate fixed to the supporting member, and an electric wiring tape connected to the recording element substrates and to the electric contact substrate. The electric contact substrate has a plurality of input terminals that are electrically connected to recording elements of the recording element substrates via the electric wiring tape, and are also electrically connected to terminals of a recording apparatus body. The electric contact substrate is wider than the electric wiring tape. If m equals the maximum number of input terminals arranged in the lateral direction on the electric contact substrate, and n equals the maximum number of input terminals arranged in the longitudinal direction on the electric contact substrate, then m>n.

Abstract: An ink container comprising a negative pressure generating member accommodating portion for accommodating a negative pressure generating member for retaining therein pigment ink to be supplied to an ink jet head; an ink supply port for supplying the ink to the ink jet head; an air vent for fluid communication between the negative pressure generating member accommodating portion and an ambient air; and an ink non-transmitting portion for partly blocking flow of the ink in the negative pressure generating member toward the ink supply port, wherein fluid communication is enabled except for the non-transmitting portion, and a sectional area, across a general direction of the flow of the ink toward the ink supply port in the negative pressure generating member accommodating portion, of non-communicating portion is not less than 50%.

Abstract: A method for producing an ink jet recording head having a plurality of recording element substrates each including a recording element for generating energy to be used for ink discharge and an electrode portion connected to the recording element, a wiring substrate provided with an electrode terminal to be electrically connected with the electrode portion of the plural recording element substrates and adapted to transmit an electrical pulse for ink discharge to the recording element, and an element substrate support member for supporting the plural recording element substrates, comprises a step of causing the plural recording element substrates to be supported on the element substrate support member, and a step of thereafter executing metal—metal bonding between the electrode portion of the plural recording element substrates and the electrode terminal of the wiring substrate.

Abstract: An ink jet recording head has a plurality of discharge energy generating devices for discharging recording liquid, while being provided with a recording element base plate arranged on the face opposite to the surface where the devices are arranged, having a plurality of recording liquid supply ports for supplying recording liquid to the devices, as well as with a supporting member that holds and fixes the recording element base plate. For the supporting member, a plurality of recording liquid supply paths are arranged to supply recording liquid to each of the supply ports of the recording element base plate, respectively, and then, the flow path width of each supply flow path is formed to be smaller than the opening width of inlet portion of each supply port. Further, the steps to be created between the supply flow path and the supply port is buried by the bonding agent forced out from the bonding face of the recording element base plate and the supporting member.

Abstract: A fiber laminate production method includes a step of controlling an influence of gravity on a fiber absorber during thermoforming.

Abstract: A fiber laminate production method includes a step of controlling an influence of gravity on a fiber absorber during thermoforming.

Abstract: An ink absorbent is contained in the housing of an ink tank for storing ink in the interior thereof, which is provided with a supply port for leading out ink to the outside, and an atmospheric communication port to be communicated with the air outside, and the ink absorbent is formed by fiber material having the surface formed at least by thermoforming. For this ink absorbent, the face which faces the supply port on the inner face of the ink tank is a cut face. With the structure thus arranged, the ink absorbent is prepared to provide cut faces to make the fiber absorbent softer than the thermoformed surface. Then, with the deformability and resiliency of the ink absorbent itself thus obtained, the close contactness with the inner walls of the ink tank is enhanced to prevent not only the ink shortage and ink leakage due to the air pass, but also, prevent the ink absorbent from being deviated when installed.

Abstract: A liquid container has a negative pressure generating member containing chamber receiving a negative pressure generating member formed with a fibrous material and having a liquid supply portion and an atmosphere communicating portion, a liquid containing chamber forming a substantially enclosed space having a communicating portion communicating with the negative pressure generating member containing chamber and storing a liquid to be supplied to the negative pressure generating member, and a partition wall separating the negative pressure generating member containing chamber and the liquid containing chamber and formed with the communicating portion.

Abstract: A liquid container having a negative pressure generating member containing chamber containing therein a negative pressure generating member formed of a fiber material and provided with a liquid supplying portion and an atmosphere communicating portion, a liquid containing chamber provided with a communicating portion communicating with the negative pressure generating member containing chamber and forming a substantially hermetically sealed space and storing therein liquid to be supplied to the negative pressure generating member, and a partition wall for partitioning the negative pressure generating member containing chamber and the liquid containing chamber and forming the communicating portion is provided with gas introduction blocking means cooperating with the partition wall and the liquid contained in the negative pressure generating member containing chamber to block the introduction of gas from the communicating portion into the liquid containing chamber except during the supply of the liquid from the

Abstract: An ink container comprising a negative pressure generating member accommodating portion for accommodating a negative pressure generating member for retaining therein pigment ink to be supplied to an ink jet head; an ink supply port for supplying the ink to the ink jet head; an air vent for fluid communication between the negative pressure generating member accommodating portion and an ambient air; and an ink non-transmitting portion for partly blocking flow of the ink in the negative pressure generating member toward the ink supply port, wherein fluid communication is enabled except for the non-transmitting portion, and a sectional area, across a general direction of the flow of the ink toward the ink supply port in the negative pressure generating member accommodating portion, of non-communicating portion is not less than 50%.

Abstract: A liquid container includes a negative pressure generating member containing chamber which contains therein a negative pressure generating member formed of a fiber material and provided with a liquid supplying portion and an atmosphere communication portion. A liquid containing chamber, provided with a communicating portion communicating with the negative pressure generating member containing chamber, forms a substantially hermetically sealed space and stores therein liquid to be supplied to the negative pressure generating member.

Abstract: A liquid container having a negative pressure generating member containing chamber containing therein a negative pressure generating member formed of a fiber material and provided with a liquid supplying portion and an atmosphere communicating portion, a liquid containing chamber provided with a communicating portion communicating with the negative pressure generating member containing chamber and forming a substantially hermetically sealed space and storing therein liquid to be supplied to the negative pressure generating member, and a partition wall for partitioning the negative pressure generating member containing chamber and the liquid containing chamber and forming the communicating portion is provided with gas introduction blocking means cooperating with the partition wall and the liquid contained in the negative pressure generating member containing chamber to block the introduction of gas from the communicating portion into the liquid containing chamber except during the supply of the liquid from the

Abstract: An ink absorbent is contained in the housing of an ink tank for storing ink in the interior thereof, which is provided with a supply port for leading out ink to the outside, and an atmospheric communication port to be communicated with the air outside, and the ink absorbent is formed by fiber material having the surface formed at least by thermoforming. For this ink absorbent, the face which faces the supply port on the inner face of the ink tank is a cut face. With the structure thus arranged, the ink absorbent is prepared to provide cut faces to make the fiber absorbent softer than the thermoformed surface. Then, with the deformability and resiliency of the ink absorbent itself thus obtained, the close contactness with the inner walls of the ink tank is enhanced to prevent not only the ink shortage and ink leakage due to the air pass, but also, prevent the ink absorbent from being deviated when installed.

Abstract: A liquid storage tank having a compartment for accommodating a negative pressure generating member consisting of a fiber material, having a liquid supplying portion and a connecting portion with the atmosphere; a liquid storing compartment for storing liquid to be supplied to the negative pressure generating member, and having a connecting portion with the compartment for accommodating the negative pressure generating member and forming an almost closed space and a separating wall separating the compartment for accommodating the negative pressure generating member from the compartment for storing liquid and forming the connecting portion and an air importing portion for importing air from the compartment for accommodating the negative pressure generating member to the compartment for accommodating the liquid, formed in the vicinity of the connecting portion.

Abstract: A method for producing an ink jet recording head having a plurality of recording element substrates each including a recording element for generating energy to be used for ink discharge and an electrode portion connected to the recording element, a wiring substrate provided with an electrode terminal to be electrically connected with the electrode portion of the plural recording element substrates and adapted to transmit an electrical pulse for ink discharge to the recording element, and an element substrate support member for supporting the plural recording element substrates, comprises a step of causing the plural recording element substrates to be supported on the element substrate support member, and a step of thereafter executing metal-metal bonding between the electrode portion of the plural recording element substrates and the electrode terminal of the wiring substrate.

Abstract: An ink jet recording head is provided, which comprises: a plurality of recording element substrates having a plurality of recording elements for discharging a recording liquid and a supply port for supplying the recording liquid to the recording elements; a supporting member for supporting the plurality of recording element substrates; an electric contact substrate having a plurality of input terminals electrically connected to terminals of a recording apparatus body and being fixed to the supporting member; and an electric wiring tape which is connected to the plurality of recording element substrates and the electric contact substrate so that the input terminals of the electric contact substrate are electrically connected to the recording elements of the recording element substrates, wherein the width of the electric contact substrate is wider than that of the electric wiring tape in a lateral direction perpendicular to a longitudinal direction in which the electric contact substrate and the electric wiring

Abstract: A liquid discharge recording head cartridge comprises a first plate having liquid supply ports opened for supply liquid; a recording element base plate provided with discharge ports for discharging liquid, a member for forming liquid flow paths to conduct liquid to the discharge ports for discharging liquid, and recording elements for generating energy to be utilized for discharging the liquid from the discharge ports, and fixed to aid first plate for inducing liquid from the liquid supply ports; a recording element unit provided with a wiring board for providing signals for the recording element base plate in accordance with recording images; and a liquid supply unit having liquid supply paths formed therefor to conduct liquid supplied from tanks containing liquid to liquid inlet ports.