Ink jet pen with improved volumetric efficiency

Details Ink jet pen with improved volumetric efficiency Ink jet pen with improved volumetric efficiency

1989-11-28

1991-04-23

Miller, Jr., George H.

Recorders

Markers and/or driving means therefor

With ink supply to marker

B41J 2175

Patent

active

050103547

ABSTRACT:
An ink jet pen (10) having a primary ink reservoir (12) connected to a printhead (16) and to a chamber (18) containing a capillary volume element (20). The pressure within the capillary element (20) is greater normal sub-atmospheric pressure within the ink reservoir (12) but is less than atmospheric pressure. In operation within a normal ambient pressure and temperature range, ink from the reservoir (12) does not enter the capillary volume element (20). Outside of the normal range, the increased pressure within the reservoir (12) causes ink to be drawn into the capillary volume element (20). This enables the pressure of the reservoir (12) to remain substantially constant so that ink is not ejected from the orifice plate of the printhead (16). As the pressure or temperature falls again into the normal range, the ink is drawn back into the primary ink reservoir (12) from the capillary volume element (20).

REFERENCES:
patent: 4509062 (1985-04-01), Low et al.
patent: 4771295 (1988-09-01), Baker et al.
patent: 4791438 (1988-12-01), Hanson et al.
patent: 4794409 (1988-12-01), Cowger et al.

Affiliated with

Also associated with

Rating

Ink jet pen with improved volumetric efficiency 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 pen with improved volumetric efficiency, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Ink jet pen with improved volumetric efficiency will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1623984