摘要:
There is disclosed a liquid discharging method and apparatus in which a bubble is formed and grown in the liquid is communicated with atmosphere at an area of a discharge opening, and in which a movable member having a free end which guides the bubble toward the discharge opening while regulating growth of the bubble.
摘要:
An ink filling method for filling an ink cartridge with ink to be supplied to a recording head for ejecting ink includes providing an ink cartridge having a negative pressure producing material accommodating portion and an ink accommodating portion, the negative pressure producing material accommodating portion accommodating a negative pressure producing material and being provided with an air vent, and the ink accommodating portion being substantially hermetically sealed except for fluid communication with the negative pressure producing material accommodating portion, and accommodating directly the ink to be supplied to the recording head, the ink cartridge further includes a partition wall between the negative pressure producing material accommodating portion and the ink accommodating portion, the partition wall being provided with a gap for permitting formation of meniscus of the ink; and directly injecting the ink into the ink accommodating portion.
摘要:
An ink jet cartridge comprises an ink jet head unit for discharging the ink, and an ink tank unit having an ink supply port for supplying the ink to the ink jet head unit. The ink tank unit has a partition portion for partitioning between an ink storing portion for storing the ink to be supplied to the ink jet head unit and a negative pressure generating member receiving portion having a negative pressure generating member. The ink supply port is provided on the negative pressure generating member receiving portion. The partition portion has an ink communicating portion at an end portion of the partitioning portion on the side of the negative pressure generating member receiving portion where the ink supply port is provided, and makes contiguous the ink storing portion and the negative pressure generating member receiving portion in a movement direction of the ink tank unit when discharging the ink.
摘要:
An ink cartridge includes a negative pressure producing material; an accommodating portion for accommodating the negative pressure producing material, the accommodating portion is provided with an opening for receiving an ink supply tube of an ink jet recording head; wherein the material is sandwiched between surfaces in the accommodating portion, and a distance between the surfaces smaller than twice an outer diameter of the ink supply tube.
摘要:
A liquid ejection head has a heat generating surface for generating heat for generating bubbles in liquid, the heat generating surface being substantially flush and/or smoothly continuous with an upstream surface of the heat generating surface, a portion above the upstream surface and a further upstream portion being in fluid communication with each other when the heat generating surface does not generate heat, a movable member having a free end and a fulcrum, the movable member and the heat generating surface having a space therebetween, and an ejection outlet for ejecting liquid through generation of the bubble. The ejection outlet opposes the heat generating surface with the movable member interposed therebetween, and an opposing member cooperates with the movable member to direct the bubble toward the ejection outlet. The movable member directs the growing bubble toward the ejection outlet in a direction substantially perpendicular to the heat generating surface.
摘要:
A manufacturing method for a liquid ejecting unit having a comb-like separation wall, a displaceable member and a grooved member mating with the comb-like separation wall includes engaging the separation wall with the grooved member while being positioned by an abutment reference.
摘要:
A liquid ejecting method for ejecting a liquid comprises using a liquid ejecting head having an ejection outlet portion having an ejection outlet for ejecting the liquid, a liquid flow path in fluid communication with the ejection outlet portion, a bubble generation region for generating a bubble in the liquid, and a movable member disposed to face the bubble generation region and provided with a free end closer to the ejection outlet portion than a fulcrum portion thereof, and displacing the movable member by a pressure based on generation of the bubble from a position of a reference surface to a position of a maximum displacement, thereby ejecting the liquid, wherein a relation of 2.theta..sub.E -7.degree..ltoreq..theta..sub.M .ltoreq.2.theta..sub.E +7.degree. is satisfied where, with a reference of the reference surface, .theta..sub.M is an angle of the movable member at the maximum displacement thereof about the fulcrum portion and .theta..sub.E is an angle of an axis connecting the fulcrum portion with an intersecting point of a center axis of the ejection outlet with a connecting surface of the ejection outlet portion to the liquid flow path, and wherein .theta..sub.M is an acute angle.
摘要:
In forming an image with plural recording heads corresponding to plural inks of different densities, the image data are so distributed that the image is formed with the ink of low density until the image density reaches a predetermined density level, but is formed with the inks of low and high densities when the image density exceeds the predetermined density level, and the distributed data are corrected according to the detection of temperature relating to the recording heads, whereby a desired recorded image can be obtained even in the presence of a variation in the head temperature. Also the image data are distributed in such a manner that, when the remaining amount of one of the plural inks becomes low, the recording is conducted with the remaining ink, whereby a desired image can be obtained even when the remaining amount of one of the plural inks with different densities becomes low.
摘要:
An ink jet recording method using a number of ejection outlets for ejecting ink includes grouping a number of ejection outlets into a plurality of groups such that ejection regions are partly overlapped; and supplying driving signals in such an order that ejection regions of groups of ejection outlets are partly overlapped.
摘要:
In an ink jet head manufacturing method wherein a plurality of substrates provided with ejection energy generating elements for generating energy for ejecting ink, are arranged on a supporting member, and a top plate is mounted on the substrate to cover all of the substrates to form ink flow paths, the improvement residing in that the supporting member is provided with recesses at a supporting portion for supporting the substrates, and an adhesive material is supplied into the recesses, and thereafter, the substrate is placed on the supporting member.