摘要:
A printing head is intended to achieve high reliability and a production method of the printing head is intended to achieve high yield at low cost. A liquid ejecting printing head employs a base body, in which an electrothermal transducer element, a driving functional element for driving the electrothermal transducer element, a wiring electrode connecting between the electrothermal transducer element and the driving functional element, an insulation layer provided on the wiring electrode are formed on a substrate (100). The electrothermal transducer element has a heat generating resistor (108) formed of a material selected from a group consisting TaN, HfB 2 , Poly-Si,Ta-Al, Ta-Ir, Au and Ag. A protective layer (106) above the heat generating body is formed of an insulative compound deposited to be low density to high density in order. The protective layer (106) is formed by depositing the insulative material in the electrothermal transducer element or the wiring electrode with elevating the temperature of the base body from low temperature to high temperature.
摘要:
An ultraviolet-curing composition comprising an ultraviolet-curing compound having at least one carboxyl group and at least one ultraviolet-curing unsaturated bond in its molecule, a base, water, and a polymerization initiator, and having a viscosity of 10 centipoises or below.
摘要:
An illumination optical system includes a beam dividing device (2) for dividing a radiation beam into plural illumination beams, and an optical arrangement (5) for superposing the illumination beams one upon another on a surface (6,9) to be illuminated, the optical arrangement having different focal distances in substantially orthogonal first and second directions, and the optical arrangement being adapted to focus each of the illumination beams on the surface in the first direction while defocusing the same in the second direction, whereby a linear illumination region is defined on the surface.
摘要:
An ink jet apparatus includes an ink jet recording head having a housing, an ink container (1) in the housing for containing ink, ejection outlets for ejecting the ink supplied from the ink container (1), energy generating means for generating energy contributable to the ejection of the ink through the ejection outlets, the housing being provided with a cavity, the ink jet recording head further comprising electric contacts (6) for supplying the energy, the contacts (6) being provided on a wall defining the cavity; a carriage (15) on which the ink jet recording head is mounted, the carriage (15) being provided with a contact member having electric contacts (6) for electric coupling with the aforementioned contacts (6), the ink jet recording head being mounted on the carriage (15) with the contact member being in the cavity; wherein the housing being provided with a window (7) extending from a cavity to permit observation of the contact member.