[특허]Liquid jet droplet generator

Liquid jet droplet generator 원문보기

IPC분류정보
국가/구분	United States(US) Patent 등록
국제특허분류(IPC7판)	G01D-009/00 G01D-015/18 B01F-015/00
출원번호	US-0577667 (1975-05-15)
발명자 / 주소	Lundquist David E. (Birmingham MI) Hoffman Paul R. (Exton PA) Su Chauchang (W. Bloomfield Township MI) Sung Benjamin T. (Southfield MI) Eichhardt Steven A. (Bloomfield Township MI)
출원인 / 주소	Burroughs Corporation (Detroit MI 02)
인용정보	피인용 횟수 : 74 인용 특허 : 0

초록 ▼

A generator for producing droplets of liquid by subjecting a confined body of such liquid to varying pressures at a given frequency and causing such liquid to issue from a discharge orifice first as a continuous stream and thereafter to break up into a succession of separate droplets. A particular use of the generator is to produce a controlled stream of ink droplets for the purpose of forming printed characters on documents. It accomplishes this object by making use of acoustic and ultransonic vibrations in a body of ink contained in a cavity of tapering dimensions having an ink intake passage and a discharge orifice, and causing periodic variations (or varicosities) in the hydraulic pressure at the discharge orifice which in turn causes the issuing stream of ink to break up into uniformly spaced apart fine droplets of ink. The droplet forming generator includes a resonant vibrating system composed of tapered front and rear horns having their wider ends in surface contact with the opposite sides of a crystal transducer sandwiched therebetween. The ink at the wider end of the cavity receives the pressure oscillations from the front horn and such pressures are concentrated by the shape of the cavity into the immediate region of its discharge orifice. The entire acoustic droplet generator is designed to locate the standing waves of pressure where they are most effective in the operation of the resonant system. Consequently, the generator can use liquids of higher viscosity at greater pressures and at higher frequencies of droplet formation than heretofore achieved. The advantages of thicker viscosity inks and higher pressures enables the attainment of better print quality and greater printing rates.

대표청구항 ▼

The method of recording on a record member by use of liquid ink droplets which includes the steps of supplying ink to the wider end of a tapered cavity having a discharge orifice in the apex end thereof under such pressure that a jet stream is projected from the discharge orifice toward the record member, superimposing a cyclically varying pressure energy upon the liquid ink content of the cavity to cause the jet stream issuing from the discharge orifice to break up into a succession of separately spaced apart ink droplets which move in free flight toward the record member, and applying said pressure energy at such a frequency as to cause the establishment in the liquid ink content of the cavity of a standing wave pattern of pressure nodes and antinodes and such that one such pressure node is located at the wider ink supplying end of the cavity and one such pressure antinode is located at the discharge orifice.

이 특허를 인용한 특허 (74)

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Bisschop, Jacobus J. M., Ink jet device and method of manufacturing the same.
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Markham Roger G. (Webster NY) Skinner ; Jr. Doyle P. (Pittsford NY), Ink jet method and apparatus using a thin film piezoelectric excitor for drop generation with spherical and cylindrical.
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Cha Charles L. (Xenia OH) Denlinger George W. (Stringboro OH) Pipkorn David N. (Centerville OH) Spyrou Elias (Dayton OH), Jet drop printer with elements balanced about support plate in nodal plane.
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IPC	Description
A	생활필수품
A62	인명구조; 소방(사다리 E06C)
A62B	인명구조용의 기구, 장치 또는 방법(특히 의료용에 사용되는 밸브 A61M 39/00; 특히 물에서 쓰이는 인명구조 장치 또는 방법 B63C 9/00; 잠수장비 B63C 11/00; 특히 항공기에 쓰는 것, 예. 낙하산, 투출좌석 B64D; 특히 광산에서 쓰이는 구조장치 E21F 11/00)
A62B-1/08	.. 윈치 또는 풀리에 제동기구가 있는 것

내보내기 구분	파일저장 인쇄 메일전송
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저장형식	Text(ASCII format) Excel format PIAS분석(.xls)
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안내	총 건의 자료가 검색되었습니다. 다운받으실 자료의 인덱스를 입력하세요. (1-10,000) 검색결과의 순서대로 최대 10,000건 까지 다운로드가 가능합니다. 데이타가 많을 경우 속도가 느려질 수 있습니다.(최대 2~3분 소요) 다운로드 파일은 UTF-8 형태로 저장됩니다. 파일의 내용이 제대로 보이지 않을실 때는 웹브라우저 상단의 보기 -> 인코딩 -> 자동선택 여부를 확인하십시오. ~ Text(ASCII format) Excel format

연합인증

Liquid jet droplet generator 원문보기

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Liquid jet droplet generator 원문보기

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대표청구항 ▼

연구과제 타임라인

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이 특허를 인용한 특허 (74)

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