摘要:
An ink jet printer head having nozzles, actuators, a multiplexer, and actuator finding circuits of a matrix method. The multiplexer is capable of single-input and multiple output. The actuator finding circuits of the inkjet printer head include electronic switches arranged in rows and columns. The nozzles have the actuators, and the actuators are controlled by the electronic switches. The multiplexer receives a signal in accordance with the conveyance direction and position of the ink jet printer head, and sequentially outputs the signal to the actuator finding circuits in accordance with the signal it received, thereby sequentially selecting a nozzle group in the rows. In this situation, when an external print data signal is inputted to the actuator finding circuits to select a nozzle group in the columns, the corresponding electronic switch drives the actuator, so that the ink is ejected out of the nozzle. Accordingly, by using the multiplexer having only one external input terminal, the increment of the number of pads is decreased when the number of ink jet printer head nozzles is increased.
摘要:
A fluid flow regulating valve using a thermal expansion material. The valve includes a body provided with inlet and outlet ports; a displacement control part in the body, the displacement control part containing the thermal expansion material and displaced toward the outlet port when the thermal expansion material expands, thereby regulating a degree of opening of the outlet port; and a heater for heating the thermal expansion material within the displacement control part. The displacement control part includes a container containing the thermal expansion material, the container being coupled to the body and an expansion plate for regulating the degree of opening of the outlet port by being expanded in accordance with an expansion of the thermal expansion material, the expansion plate being hermetically coupled to the container.
摘要:
An ink jet printer head and method for discharging ink in an ink chamber through a nozzle hole by a fluid pressure of air. The ink jet printer head having a fluid chamber defined on or in a side of a silicon plate to be charged with a fluid, such as air, and a through-hole which communicates with an ink chamber. The ink jet printer head opens the through-hole by operating a piezo-actuator, pressures ink in the ink chamber, and pushes a tail of the ink during ink discharge. Accordingly, uniform shapes of ink droplets can be obtained resulting in a high resolution print.
摘要:
An ink flow path of improved structure in an ink jet printer head includes a first ink channel formed at a right angle to an ink supply path in parallel relation with an ink chamber, a second ink channel formed at a right angle to the first ink channel in parallel relation with the ink supply path across the ink chamber, and a third ink channel connecting the second ink channel to a rear side of the ink chamber of which front side faces the ink supply path. Accordingly, a backflow of ink is prevented during the ink discharge through a nozzle hole, thus print quality is improved.
摘要:
The present invention relates to positively charged lipids prepared by linking salt forms of acidic amino acid with a variety of lengths of hydrocarbon chain, a process for preparing the lipids, and liposomes comprising the said positively charged lipids. Positively charged lipids of the invention can be practically applied for the preparation of liposomes for gene therapy, since they provide better characteristics than the conventional positively charged lipids in terms of gene delivery efficiency and biocompatibility.
摘要:
A jitter control apparatus is provided. The apparatus includes a first optical prism installed to be rectilinearly transferable in a right-angled direction with respect to an optical axis for refracting and transmitting incident light so that the angle of emission is smaller than the angle of incidence with respect to the transfer direction, a first actuator for rectilinearly transferring the first optical prism, a second optical prism installed to be adjacent to the first optical prism and rectilinearly transferred in a right-angled direction with respect to the direction in which the first optical prism is transferred for refracting and transmitting the incident light so that the angle of emission is smaller than the angle of incidence with respect to the direction in which the second optical prism is transferred, and a second actuator for rectilinearly transferring the second optical prism, wherein the image formed on the photographing screen is prevented from vibrating by appropriately transferring the first and second optical prisms according to the degree of jitter of the incident image.