Printing device having a printing fluid detection system

Details Printing device having a printing fluid detection system Printing device having a printing fluid detection system

2005-04-05

2005-04-05

Pham, Hai (Department: 2861)

Incremental printing of symbolic information

Ink jet

Controller

Reexamination Certificate

active

06874861

ABSTRACT:
A printing device is provided, which is configured to print a printing fluid onto a printing medium. The printing device includes a printing fluid reservoir configured to hold a volume of the printing fluid, a print head assembly configured to transfer the printing fluid to the printing medium, a conduit fluidically connecting the printing fluid reservoir to the print head assembly, and a printing fluid detector associated with the conduit. The printing fluid detector includes a first electrode and a second electrode coupled with the conduit and configured to be in contact with printing fluid in the conduit, a power supply configured to apply an alternating supply signal to the first electrode, and detector circuitry configured to detect a measured impedance value related to the presence of printing fluid within the conduit by comparing the alternating supply signal with a detected signal that has been modified from the applied signal by an impedance characteristic of the printing fluid.

REFERENCES:
patent: 4183029 (1980-01-01), Isayama et al.
patent: 4202267 (1980-05-01), Heinzl et al.
patent: 4319484 (1982-03-01), Keller
patent: 4368478 (1983-01-01), Koto
patent: 4445012 (1984-04-01), Blackburn et al.
patent: 4800755 (1989-01-01), Fathauer et al.
patent: 4841256 (1989-06-01), Gastgeb
patent: 4956763 (1990-09-01), Stewart, Jr. et al.
patent: 5611240 (1997-03-01), Yamaguchi
patent: 5623291 (1997-04-01), Morandotti et al.
patent: 5682184 (1997-10-01), Stephany et al.
patent: 5719556 (1998-02-01), Albin et al.
patent: 6246831 (2001-06-01), Seitz et al.

Affiliated with

Also associated with

Rating

Printing device having a printing fluid detection system does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Printing device having a printing fluid detection system, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Printing device having a printing fluid detection system will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-3431432