Abstract: The outer side of a pair of curved parts 3d of a longitudinal annular blank is pressed and energized towards the curved part 3d of the opponent side with a molding outer die 14 of a shaping device 13 to press and widen each curved part 3d to a large curved part of large curvature radius, and a half-finished article 17 is molded, and thereafter, the half-finished article 17 is pressed and widened by cooperative operation of a finishing inner die of the shaping device and a window part of a perfect circle functioning as an outer die to manufacture a ring-shaped member. Therefore, a yield rate or a percentage of the weight of the ring-shaped member with respect to the weight of the raw material and the yield rate or the percentage of the ring-shaped member with respect to the blank can be improved, and the cost can be reduced.

Abstract: A method of producing a ring-shaped member is provided in which a material loss is eliminated, the process cost can be reduced, and a ring-shaped member can be easily obtained from a pipe member by a small number of steps. The method includes steps of: inwardly projectingly shaping a flange portion 1c on an end portion of a metal-made pipe member 1; and cutting off the flange portion 1c from the pipe member 1, thereby obtaining a ring-shaped member 10.

Abstract: A yield which is a ratio of the weight of a ring-shaped member to that of a stock material, and a yield which is a ratio of the ring-shaped member to a blank are improved, and the cost is reduced. In a method of producing a ring-shaped member in which a ring-shaped member is obtained from a longitudinally elongated annular blank 3, a pair of linking portions 3b, 3c are outward expanded from the inner side of the blank 3, and a pair of arcuate portions 3d are pressed from the outer side toward the inner side to be pressingly expanded, thereby shaping into a ring-shaped member.

Abstract: The outer side of a pair of curved parts 3d of a longitudinal annular blank is pressed and energized towards the curved part 3d of the opponent side with a molding outer die 14 of a shaping device 13 to press and widen each curved part 3d to a large curved part of large curvature radius, and a half-finished article 17 is molded, and thereafter, the half-finished article 17 is pressed and widened by cooperative operation of a finishing inner die of the shaping device and a window part of a perfect circle functioning as an outer die to manufacture a ring-shaped member. Therefore, a yield rate or a percentage of the weight of the ring-shaped member with respect to the weight of the raw material and the yield rate or the percentage of the ring-shaped member with respect to the blank can be improved, and the cost can be reduced.

Abstract: The yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material and the yield rate or the percentage of the ring-shaped member with respect to the blank are improved to achieve the cost reduction. A half-finished article 18 having large curved parts 3D obtained by widening the curved parts 3d so as to have a curvature radius larger than the initial curvature radius, and bulge-out parts 3E curved to a circular arc shape at a curvature radius larger than the curvature radius of the curved parts 3d at the linear parts 3b, 3c is molded, and thereafter, the half-finished article 18 is molded into an annular shape to obtain the ring-shaped member 1.

Abstract: The yield rate or the percentage of the weight of the ring-shaped member with respect to the weight of the raw material is improved to achieve the cost reduction of the ring-shaped member. A plurality of longitudinal annular blanks 3 is punched out from a raw material 2 of a predetermined width, and the longitudinal annular blank 3 is molded into an annular ring-shaped member 1.

Abstract: The method according to the present invention comprises: a first curving step of curving a plate-like metallic blank (1) such that the blank (1) is convexed; a bending step of bending, with the outer peripheral edge portion (1e) of the blank (1) restrained from radially outwardly extending, the resulting arcuate portion (1b) of the curved blank (1) in the direction opposite to the convex direction thereof, so that a boss (6) is formed; and a second curving step of pushing the inner peripheral portion of a flat portion (5) of the blank (1) in the direction opposite to the boss projecting direction. Through the steps above-mentioned, the blank (1) is provided at the center thereof with the case-like boss (6) projecting in one direction from one lateral side of the blank (1) and at the outer periphery thereof with a peripheral wall (7) projecting in the same direction in which the boss (6) projects.

Abstract: A press comprises a servo motor (6), a ball screw (9), and a roller guide (11) in which machining accuracy is enhanced while reducing the overall size and weight, noise and vibration, and power consumption of the press.

Abstract: A fluid container, such as, for example, an inkjet print head cartridge, architecture uses a relatively large filter that is located below a negative pressure material chamber and a free ink chamber in a side-by-side relationship. The negative pressure material volume relative to a free ink chamber value can me made to be approximately one to one. Both chambers overlie an ink manifold/delivery port and are separated from the delivery port by a filter. Flow impedance of the cartridge is reduced, as a result, in any orientation of the cartridge. The filter may be separated from, or in contact with a negative pressure material. A cartridge lid is provided with a negative pressure material chamber which is suspended into the cartridge. A negative pressure material having a fiber felt construction is provided.

Abstract: A refillable fluid reservoir for a fluid ejection head, including a fluid reservoir having top, bottom and side walls defining an interior volume for having fluid; a venting port provided on one of the reservoir walls; and a fluid inlet port provided on one of the reservoir walls, the venting port and the fluid inlet port being located at substantially the same vertical level to increase volumetric efficiency and reduce staining.

Abstract: A fluid ejection container system provides a first container that contains the fluid, the first container being evacuated to negative gauge pressure when being filled with the fluid, a second container having a capillary medium that contains the fluid, a passage between the first and second containers communicating the fluid at a level wherein the passage is wetted with the fluid, a ventilation port to communicate air between an interior region in the fluid ejection system and ambient, at least one spill over region to communicate the fluid with the second container, and a plurality of channels to communicate at least the air between the interior region and the second container; wherein the at least one spill over region has sufficient volume to contain a quantity of the fluid that migrates out of the second container. The fluid ejection container system also provides a lid for sealing the first and second containers from the ambient, wherein the channels are disposed on the lid.

Abstract: A refill junction for a fluid container including an exterior surface; a retaining clip having an outer face and an inner face, at least one of the exterior surface and the inner face including at least one capillary.

Abstract: A port for replenishing ink on the side of a main ink tank advances and the nose or tip end of a main body of a pipe enters an ink replenishing opening on the side of a sub ink tank. When a valve body in the main body of the pipe and a valve on side of the sub ink tank are pressed with each other, a communicating port is opened by the valve body. When the main body of the pipe is further inserted into the ink replenishing opening, the valve is separated from a projection portion of a gasket, and a space therebetween starts to be widened. At this stage, as a lip portion of the gasket is not in contact with an outer peripheral portion of the main body of the pipe, an ink channel is opened to the atmosphere, the ink which is remained in or adhered to the outer peripheral portion of the main body of the pipe or an inside of the ink replenishing opening is absorbed into the sub ink tank dye ti a negative pressure in the sub ink tank.

Abstract: A press comprises a servo motor (6), a ball screw (9), and a roller guide (11) in which machining accuracy is enhanced while reducing the overall size and weight, noise and vibration, and power consumption of the press.

Abstract: A fluid container, such as, for example, an inkjet print head cartridge, architecture uses a relatively large filter that is located below a negative pressure material chamber and a free ink chamber in a side-by-side relationship. The negative pressure material volume relative to a free ink chamber value can me made to be approximately one to one. Both chambers overlie an ink manifold/delivery port and are separated from the delivery port by a filter. Flow impedance of the cartridge is reduced, as a result, in any orientation of the cartridge. The filter may be separated from, or in contact with a negative pressure material. A cartridge lid is provided with a negative pressure material chamber which is suspended into the cartridge. A negative pressure material having a fiber felt construction is provided.

Abstract: A refill junction for a fluid container including an exterior surface; a retaining clip having an outer face and an inner face, at least one of the exterior surface and the inner face including at least one capillary.

Abstract: A refillable fluid reservoir for a fluid ejection head, including a fluid reservoir having top, bottom and side walls defining an interior volume for having fluid; a venting port provided on one of the reservoir walls; and a fluid inlet port provided on one of the reservoir walls, the venting port and the fluid inlet port being located at substantially the same vertical level to increase volumetric efficiency and reduce staining.

Abstract: A fluid ejection container system provides a first container that contains the fluid, the first container being evacuated to negative gauge pressure when being filled with the fluid, a second container having a capillary medium that contains the fluid, a passage between the first and second containers communicating the fluid at a level wherein the passage is wetted with the fluid, a ventilation port to communicate air between an interior region in the fluid ejection system and ambient, at least one spill over region to communicate the fluid with the second container, and a plurality of channels to communicate at least the air between the interior region and the second container; wherein the at least one spill over region has sufficient volume to contain a quantity of the fluid that migrates out of the second container. The fluid ejection container system also provides a lid for sealing the first and second containers from the ambient, wherein the channels are disposed on the lid.