摘要:
Provided is a composition curable by active energy rays, comprising a cationic polyacryloyl compound having two or more acryloyl groups and one or more cation groups in a molecule, represented by any of General Formulae (1) to (6)
R₁-K₁-Z₁-K₁-R₁ (1),
wherein Z₁ to Z₆ represent independently a residue derived from a polyhydric alcohol or a polyepoxide, K₁ represents independently a radical of the formula
K₂ represents a radical of the formula
R₁ represents independently a radical of the formula
wherein R₃ is independently H- or CH₃-, and R₂ represents independently a radical of the formula
摘要:
An ink jet head (12) includes a plurality of ejection orifices (101) for ejecting ink; a common liquid chamber (106) for storing temporarily the ink to be supplied to each of the ejection orifices; a plurality of ink passages (108), being separated by liquid passage walls (109), and each of which connects one of the ejection orifices to the common liquid chamber; and a plurality of energy generating elements (102) provided one for one in each of the ink passages (108) for generating energy to eject the ink from each of the ejection orifices (101); wherein the ejection orifices are grouped into a plurality of control blocks (B₁,B₂...) comprising a predetermined number of the ejection orifices (101) in sequence so that the energy generating elements (102) are driven by the block; and wherein walls (109') are provided in the common liquid chamber (106), at the dividing lines between the control blocks, for impeding the ink movement in the liquid chamber (106), between the adjacent blocks.
摘要:
An ink jet head includes an ink container (1000); a recording head (IJH) having an ink ejection outlet; a supply pipe (2200) for supplying the ink from the container to the recording head; a porous material (900) contained in the container (1000) for retaining the ink; wherein the supply pipe (2200) is pressed to the porous material to deform it, wherein a depth of the deformation (2) is larger than a maximum length (D) of a cross-section of the supply pipe.
摘要:
A liquid jet recording head comprising a first substrate (100) provided with an energy-generating element (105) that generates an energy for discharging a recording liquid, a second substrate (400) jointed to the first substrate (100), the second substrate (400) having grooves (411,412) that form passages for the recording liquid in accordance to the position of the energy-generating element at the jointing and being integrated with a discharge port-forming member (404) that forming discharge ports (421,422) for the recording liquid on the front side of the grooves (411,412), and a force-endowing member (500) that tightly boxes the first and second substrates to each other by a mechanically endowed force has a high reliability and can be produced in a high productivity at a low cost with a smaller number of production steps.