Recorders – Markers and/or driving means therefor – With ink supply to marker
Patent
1987-07-15
1989-01-31
Hartary, Joseph W.
Recorders
Markers and/or driving means therefor
With ink supply to marker
G01D 1518
Patent
active
048019542
ABSTRACT:
An ink jet printer having a print head which comprises a front nozzle member having a front channel, a housing secured to the front nozzle member, and a rear nozzle member which defines with the housing a liquid chamber and further defines with the front nozzle member a laminar airflow chamber. The rear nozzle member has a forwardly projecting nozzle and a rear channel extending from the liquid chamber through the projecting nozzle in axial alignment with the front channel to form a meniscus at the front end. The airflow chamber is connected to an air supply for directing air to a point between the front and rear channels so that it creates a sharp pressure gradient along a path therebetween. A dead air region is created in a location adjacent the exit end of the rear channel to cause the meniscus to take a dome-like shape which is stabilized against vibrations and transients. An electric field gradient is established between the front channel and the meniscus to cause the latter to extend toward the front channel and expelled through the front channel.
REFERENCES:
patent: 3466659 (1969-09-01), Ascoli
patent: 4002230 (1977-01-01), Schweppe
patent: 4059480 (1977-11-01), Ruh et al.
patent: 4066491 (1978-01-01), Ruh et al.
patent: 4276335 (1981-06-01), Lemmond
patent: 4403234 (1983-09-01), Miura et al.
patent: 4413268 (1983-11-01), Bentin
patent: 4549188 (1985-10-01), Shackleton
patent: 4555717 (1985-11-01), Miura
IBM Technical Disclosure Bulletin, vol. 26, No. 3A, Aug. 1983, p. 1041, Armonk, New York, US; G. J. Ratchford: "Nozzle Plate".
Patents Abstracts of Japan, vol. 9, No. 57 (M-363)(1780), Mar. 13, 1985; & JP-A-59 192 576 (Matsushita Denki Sangyo K.K.) 10-31-1984.
Akami Kenji
Kojima Tamotsu
Miura Masayoshi
Naito Hiroshi
Oda Gen
Hartary Joseph W.
Matsushita Electric - Industrial Co., Ltd.
LandOfFree
Ink jet printer does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Ink jet printer, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink jet printer will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-180008