摘要:
The present invention relates a manufacturing method of a microactuator for an ink jet printer head using a shape memory alloy, the method comprising steps of: providing a silicon substrate; forming an insulating film on the surface of the silicon substrate; forming a shape memory alloy layer by independent repetitive molding of each layer of respective component element constituting the shape memory alloy on the insulation film; bestowing a shape memory property by thermally treating the shape memory alloy layer; and forming a lower space part by etching the silicon substrate, and a microactuator manufactured by the method, whereby it is easy to control the composition constituting the shape memory alloy layer so that shape memory property of shape memory alloy layer is enhanced; and also it makes effect that it is eminent in repetition uniformity of ingredient composition ratios compared to traditional methods in which simultaneous vapor deposition or sputtering of all formation components is carried out because now each component element thickness and film growth sequence are independently controlled.
摘要:
An image forming apparatus which includes a fan to generate an air flow within the image forming apparatus, and a controller to drive the fan at a first speed corresponding to a first time period representing an image forming operation and to drive the fan at a second speed corresponding to a second time period corresponding to operations other than the image forming operation.
摘要:
An ink cartridge includes a residual ink sensing unit having a simple structure of an upper electrode plate and a lower electrode plate to accurately detect a capacitance between the upper and lower electrode plate. Therefore, data of a remaining amount of ink is reliably measured, there is less possibility that an ink bag is damaged when the residual ink sensing unit is installed in the ink bag, and damage to the ink cartridge and defective printing due to unstable supply of ink and the missing of the time for replacing the ink cartridge are prevented.
摘要:
An image forming apparatus including a body, a print head including a nozzle part having a length corresponding to a width of a printing medium, and a regulator provided separately from the print head and mounted to the body, the regulator serves to adjust a negative pressure of ink which is to be supplied into the print head.
摘要:
An ink cartridge includes a body divided into an ink chamber into which ink is filled and a collecting chamber collecting excess remaining ink after ink is ejected, an ink supply unit formed on a lower portion of the body to receive the ink from the ink chamber and to discharge the excess remaining ink to the collecting chamber after the ink is ejected, and a printhead coupled to a lower portion of the ink supply unit to eject the ink. The ink supply unit is divided into a supply port to receive the ink from the ink chamber and a collection port to receive the excess remaining ink after the ink is ejected through the printhead and to discharge the excess remaining ink to the collecting chamber, and the printhead faces only the collection port and receives ink from the supply port at one side adjacent to the supply port, so that air bubbles generated by the printhead are gathered only in the collection port.
摘要:
An array printhead and an inkjet image forming device having the same. The array printhead includes a first member, a second member, and a third member. The first through third members sequentially overlap and couple to each other. The first member supplies ink of different colors to the second member and the second member separately receives the ink of different colors supplied from the first member and allows the ink to flow to the third member. The third member is mounted with a plurality of head chips on a lower surface thereof and the head chips have nozzles ejecting ink and forming a plurality of nozzle lines. The ink of different colors is supplied to the nozzle lines, respectively.
摘要:
A compressor controlling apparatus including a bypass unit connected between an outlet and an inlet of the compressor and a control unit. The control unit reduces pressure difference between the outlet and the inlet of the compressor by the bypass unit to start the compressor when the compressor is to be started. The compressor is started while pressure equilibrium is achieved by the bypass unit, thereby preventing poor start-up of the compressor caused due to excessive pressure difference, and thus improving reliability of the compressor.
摘要:
An ink cartridge includes a main body containing an ink absorbent body at an inside thereof and filled with ink, an ink head chip disposed at a lower portion of the main body to spray the ink onto a printing paper, an ink feeding pipe disposed at an inside of the lower portion of the main body to feed the ink in the main body to the ink head chip, and a pressure rib protruding from a bottom of the main body toward the ink absorbent body by a height higher than the ink feeding pipe to press the ink absorbent body contacting the pressure rib before coming in contact with the ink feeding pipe.
摘要:
An ink-jet cartridge includes a cartridge body forming an ink reservoir, a standpipe coupled to one side of the ink reservoir, a printhead formed under an ink supply passage formed by the standpipe, through which ink from the ink reservoir is ejected onto a printing medium in a droplet shape, and a filter which covers a top portion of the standpipe. The filter is formed in a convex shape protruding toward the printhead. Ink particles and bubbles flowing from the ink reservoir to the printhead are filtered out, bubbles which may flow from the printhead to the ink reservoir, move to edges of the filter, and the ink is smoothly supplied to the printhead.
摘要:
An inkjet printhead and a manufacturing method thereof. The inkjet printhead includes a substrate, a substantially cylindrical ink chamber storing ink and formed in an upper portion of the substrate, and a manifold supplying ink to the ink chamber in a bottom portion of the substrate, a channel-forming layer disposed between the ink chamber and the manifold and having an ink channel communicating between the ink chamber and the manifold, a nozzle plate stacked on the substrate and having a nozzle at a location corresponding to the central part of the ink chamber, a heater formed to surround the nozzle of the nozzle plate, and electrodes electrically connected to the heater to supply current to the heater. Therefore, the quantity of ink stored in an ink chamber can be increased. Also, when bubbles grow, the cylindrical ink chamber confines an ink flow area to ink ejectors, thereby reducing a back flow of the ink. Further, the quantity of ink supplied to the ink chamber can be adjusted by varying the number of ink channels formed in the channel-forming layer, thereby improving frequency characteristics of the inkjet printhead.