Method and apparatus for ink-jet ink level detection

Details Method and apparatus for ink-jet ink level detection Method and apparatus for ink-jet ink level detection

1997-05-29

1998-08-11

Barlow, Jr., John E.

Incremental printing of symbolic information

Ink jet

Controller

347 87, 73290R, 222 23, 116227, 116278, B41J 2175

Patent

active

057933871

ABSTRACT:
An ink jet pen supply cartridge having a spring biased ink reservoir with a visual indication of remaining ink quantity. The reservoir tends to collapse laterally as the ink supply decreases due to differential pressure exerted thereto. The spring-reservoir is contained in a rigid cartridge and a pair of flexible tape members are cemented or welded, one to each side of the spring-reservoir, and extend generally parallel toward a narrow end surface of the cartridge at which they overlap and can be viewed through a window. The overlapping relationship of the tape members provide ink quantity indicia which change as the spring-reservoir collapse draws them past each other.

REFERENCES:
patent: 3484939 (1969-12-01), Perry
patent: 4589000 (1986-05-01), Koto et al.
patent: 4709244 (1987-11-01), Piatt et al.
patent: 4935751 (1990-06-01), Hamlin
Hewlett-Packard Journal, Aug. 1988, Coverpage.

Affiliated with

Also associated with

Rating

Method and apparatus for ink-jet ink level detection does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for ink-jet ink level detection, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for ink-jet ink level detection will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-393760