Abstract: A developing roller that is capable of carrying toner on a surface thereof, and that supplies the toner carried on the surface to a surface of a photosensitive drum when a voltage is applied thereto, includes: a rubber layer; and a surface layer that covers the rubber layer, contains alumina, and has a higher volume resistivity than the rubber layer.

Abstract: A brake abnormality diagnosis device which diagnoses an abnormality in a brake of a brake-equipped motor provided in a robot or a machine tool, includes: an abnormality diagnosis unit which performs a diagnosis as to whether or not there is an abnormality in the brake, while the motor is excited and the brake is activated; and an output unit which, if it is diagnosed that there is an abnormality in the brake, notifies the abnormality in the brake without interrupting the excitation of the motor and without releasing the brake.

Abstract: A servomotor drive device has a first converter, a regenerative resistor circuit having a first switching element and a regenerative resistor, a first connection part configured to connect a second converter in parallel to the regenerative resistor circuit in an attachable and detachable manner, and a first control unit configured to control the on and off states of the first switching element. The second converter has a second switching unit and a second control unit configured to return regenerative energy to an AC power source side by bringing the second switching element into the on state when the second converter is connected to the first connection part.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A diode includes an anode connected to the other ends of brake coils, and a cathode connected to one end of a smoothing capacitor. A diode includes an anode connected to the other end of the smoothing capacitor, and a cathode connected to one ends of the brake coils. By providing the diodes, energy stored in the brake coils, when at least one of an NPN type transistor and an NPN type transistor is in an on-state, is returned to the smoothing capacitor when the NPN type transistors are in an off-states.

Abstract: A first switching element is connected to one end of a brake and switches from the off state to the on state when a switch command is input to cause a brake drive current to flow through the brake. A second switching element is connected to the other end of the brake and switches from the off state to the on state when the switch command is input to cause a brake drive current to flow through the brake. A voltage detection unit detects a brake voltage being applied to the brake. A switch command delay unit delays the switch command input to the first switching element. A short circuit determination unit determines whether or not a short circuit has occurred in the first switching element based on the brake voltage and the switch command delayed by the switch command delay unit.

Abstract: A brake abnormality diagnosis device which diagnoses an abnormality in a brake of a brake-equipped motor provided in a robot or a machine tool, includes: an abnormality diagnosis unit which performs a diagnosis as to whether or not there is an abnormality in the brake, while the motor is excited and the brake is activated; and an output unit which, if it is diagnosed that there is an abnormality in the brake, notifies the abnormality in the brake without interrupting the excitation of the motor and without releasing the brake.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A liquid ejection apparatus manufacturing method includes forming a metallic film in at least the section to be cut of a bonding surface between the flow path forming substrate (a second substrate) and the protection substrate (a first substrate); forming a first fragile section on the protection substrate by irradiating the section to be cut of the protection substrate bonded to the flow path forming substrate from the protection substrate side with a laser beam whose condensing point is focused thereon, and forming a second fragile section on the flow path forming substrate by melting the metallic film of the section to be cut; and dividing the protection substrate and the flow path forming substrate bonded to each other along the first fragile section and the second fragile section.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A method for manufacturing an ink jet recording head is employed which has a metal mask formation process for forming a metal mask having a predetermined shape containing a silicide film formed by silicidation of the surface of a flow path forming substrate wafer containing a silicon substrate and a liquid flow path formation process for forming a liquid flow path by anisotropically etching the flow path forming substrate wafer using the metal mask as a mask.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A method for manufacturing an ink jet recording head is employed which has a metal mask formation process for forming a metal mask having a predetermined shape containing a silicide film formed by silicidation of the surface of a flow path forming substrate wafer containing a silicon substrate and a liquid flow path formation process for forming a liquid flow path by anisotropically etching the flow path forming substrate wafer using the metal mask as a mask.

Abstract: A liquid ejecting head including a first base member in which a plurality of pressure generating chambers communicating with nozzle openings and a series of partition walls are arranged in parallel, a second base member disposed on the first base member, a reservoir serving as a common liquid chamber for the pressure generating chambers, and an adhesive agent adhered to a first angular portion formed in an end portion of the partition walls near the reservoir which is adjacent to the second base member.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A liquid ejecting head that includes a fluid channel formation substrate and pressure generation units. The fluid channel formation substrate is made of a silicon single crystal substrate having a crystal face orientation of. The fluid channel formation substrate has a plurality of separate flow channels that include at least pressure generation chambers demarcated by partition walls, each of the pressure generation chambers being in communication with a nozzle opening that ejects liquid drops. The fluid channel formation substrate further has a communication portion that is in communication with each of the separate flow channels. The pressure generation units are provided so as to correspond to the pressure generation chambers and generate a pressure change in the pressure generation chambers so as to cause ejection of liquid drops.

Abstract: A liquid ejection head including: a flow-channel forming substrate having a pressure generating chamber which communicates with a liquid supply channel which communicates with one end of the pressure generating chamber in terms of a first direction so as to have a first length for supplying liquid to the pressure generating chamber; and a pressure generating unit that causes the change in pressure in the pressure generating chamber, wherein the liquid supply channel is formed by narrowing the width of the pressure generating chamber in a second direction substantially perpendicular to the first direction so as to have a second length shorter than the first length, a stepped surface is formed between the side surface of the pressure generating chamber in the second direction and the side surface of the liquid supply channel in the second direction, and wherein a bridge is provided at a corner defined by the stepped surface, the side surface of the pressure generating chamber in the second direction on the step

Abstract: A liquid ejecting head including a first base member in which a plurality of pressure generating chambers communicating with nozzle openings and a series of partition walls are arranged in parallel, a second base member disposed on the first base member, a reservoir serving as a common liquid chamber for the pressure generating chambers, and an adhesive agent adhered to a first angular portion formed in an end portion of the partition walls near the reservoir which is adjacent to the second base member.

Abstract: A hemming machine is provided with a frame, a hemming tool support structure and a swinging drive structure. The hemming tool support structure is rotatably coupled to the frame to rotate about a center rotation axis. The hemming tool support structure includes a hemming tool disposed at a first location such that the hemming tool moves towards and away from an edge part of a workpiece that is supported on a die upon rotation of the hemming tool support structure. The swinging drive structure transmits a rotational driving force to the hemming tool support structure via a releasable connection located on a side of the center rotation axis that is opposite of the hemming tool. The releasable connection is configured to release the swinging drive structure to allow further rotational movement of the hemming tool away from the die.

Abstract: When a liquid passage is formed by etching a passage forming substrate by using a protective film formed on the surface of the passage forming substrate, there are provided a first step of forming the protective film, as a process of forming the protective film having a predetermined pattern, a second step of forming a resist film by applying a positive resist on the protective film and subjecting the positive resist to pre-baking, a third step of selectively removing the resist film by selectively exposing and developing the resist, a fourth step of selectively removing the protective film by performing dry etching at a temperature equal to or lower than a temperature at which the pre-baking is performed, a fifth step of removing a degeneration layer formed on the surface of the resist film in the third step, and a sixth step of removing the resist film by again exposing and developing the resist film.