In an example implementation, a printhead includes a die sliver molded into a molding. The die sliver includes a front surface exposed outside the molding and flush with the molding to dispense fluid, and a back surface exposed outside the molding and flush with the molding to receive fluid. Edges of the die sliver contact the molding to form a joint between the die sliver and the molding.

A recording element substrate includes a signal supply circuit and a common line which connects the signal supply circuit to first logic circuit array for a recording element and a second logic circuit array for a memory element in common. Furthermore, the first and second logic circuit arrays extend along a direction in which the common line extends, the first logic circuit array is disposed on one side of the common line, the second logic circuit array is disposed on the other side of the common line, and the first and second logic circuit arrays are arranged so that at least a portion of the first logic circuit array and a portion of the second logic circuit array overlap with each other in a direction orthogonal to the extending direction.

A recording element substrate includes a recording module including a plurality of recording elements and first logic circuits corresponding to the plurality of recording elements, a memory module including a plurality of memory elements and second logic circuits corresponding to the plurality of memory elements, and a common line configured to connect a signal supply circuit to the plurality of first logic circuits and the plurality of second logic circuits in common. The recording elements are arranged along an extending direction in which the common line extends, and the memory modules are disposed between the common line and the recording elements.

An apparatus includes a reservoir and a printhead. The printhead includes a support structure including a deformable portion defining at least a top surface of a pumping chamber, a flow path extending from the reservoir to the pumping chamber to transfer fluid from the reservoir to the pumping chamber, and an actuator disposed on the deformable portion of the support structure. A trench is defined in a top surface of the actuator. Application of a voltage to the actuator causes the actuator to deform along the trench, thereby causing deformation of the deformable portion of the support structure to eject a drop of fluid from the pumping chamber.

A drive circuit includes an amplification unit that amplifies a signal and outputs the amplified signal toward a node; and a voltage output unit that outputs a voltage responding to the signal toward the node during a predetermined period of a part or all of a period in which a magnitude of a voltage change of the signal is less than or equal to a threshold. The amplification unit includes a differential amplifier, a selector, and transistors, and the voltage output unit includes a linear amplifier and a switch.

A drive circuit includes an amplification unit that amplifies a signal and outputs the amplified signal toward a node; and a voltage output unit that outputs a voltage responding to the signal toward the node during a predetermined period of a part or all of a period in which a magnitude of a voltage change of the signal is less than or equal to a threshold. The amplification unit includes a differential amplifier, a selector, and transistors, and the voltage output unit includes a linear amplifier and a switch.

Provided is an ink jet recording method capable of recording a high-quality image in which a positional shift between ruled lines recorded with a plurality of inks through use of a circulation serial head and variations in their line widths are reduced. The ink jet recording method includes recording an image by ejecting an ink from a recording head including, an ejection element and a first flow path and a second flow path. This method includes an ejection step and a flow step. The recording head is of a serial type. The first flow path and the second flow path are arranged in parallel to a scanning direction and have the same flow direction of the ink. Ejection orifice arrays include a first ejection orifice array. A static surface tension s.sub.1 of the first ink and a static surface tension s.sub.2 of the second ink satisfy a relationship of s.sub.1<s.sub.2.

To provide a medical printer (100) that can cut a roll sheet (P) by pulling the roll sheet (P) in any of an up direction and a down direction. There is provided a medical printer including: a main body (102) that accommodates a roll sheet; a movable section (104) including a front panel (104A) that covers a front face, the movable section being capable of opening and closing against the main body; a first cutting section (130) provided on the movable section, and configured to cut the roll sheet ejected from an ejection port (110) defined by the main body and the movable section; and a slide section configured to slide the front panel or the first cutting section in a radial direction with respect to a rotation center of the movable section in accordance with open and closed states of the movable section.

In an example implementation, a printhead includes a die sliver molded into a molding. The die sliver includes a front surface exposed outside the molding and flush with the molding to dispense fluid, and a back surface exposed outside the molding and flush with the molding to receive fluid. Edges of the die sliver contact the molding to form a joint between the die sliver and the molding.

There is provided a liquid discharge apparatus, including: a drive element configured to apply discharge energy to the liquid to discharge the liquid; signal generators configured to generate a plurality of types of drive signals having mutually different waveforms to drive the drive element; and drive switches electrically located between the signal generators and the drive element to correspond to the plurality of types of drive signals respectively. The drive switches include a first drive switch and a second drive switch which are different in ON-resistance.