Browse Prior Art Database

COMBINED COVER OPEN AND LOW INK SENSOR

IP.com Disclosure Number: IPCOM000027476D
Original Publication Date: 1997-Apr-30
Included in the Prior Art Database: 2004-Apr-08
Document File: 2 page(s) / 58K

Publishing Venue

Xerox Disclosure Journal

Abstract

FIGS. 1 and 2 show an ink tank 10 for an ink jet printer which is positioned so that a light beam of a light source 11, part of a low ink sensor unit 12, is directed to portions of the mk tank in optical communication with the interior of the tank. Reflected signals from the ink tank are sensed at sensor 13, also part of sensor unit 12, and are sent to appropriate control electronics. The ink tank has an associated top cover 14. Attached to the cover is a reflective flag 16 attached to stem 18. When the cover is closed (HG. l), the flag 16 is below the bottom of the tank. Normal ink sensing can take place. When the cover 14 is open (FIG.

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XEROX DISCLOSURE JOURNAL

COMBINED COVER OPEN AND LOW INK SENSOR U. S. C1. 347/087 Walter F. Wafler

Proposed Classification

Int. C1. B41j 02/175

12 -\ r

14

16 FIG. I

-_ 12

16 FIG.2

XEROX DISCLOSURE JOURNAL - Vol. 22, NO. 2 March/Aprill997 73

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COMBINED COVER OPEN AND LOW INK SENSOR (CONT'D)

FIGS. 1 and 2 show an ink tank 10 for an ink jet printer which is positioned so that a light beam of a light source 11, part of a low ink sensor unit 12, is directed to portions of the mk tank in optical communication with the interior of the tank. Reflected signals from the ink tank are sensed at sensor 13, also part of sensor unit 12, and are sent to appropriate control electronics. The ink tank has an associated top cover 14. Attached to the cover is
a reflective flag 16 attached to stem 18. When the cover is closed (HG. l), the flag 16 is below the bottom of the tank. Normal ink sensing can take place. When the cover 14 is open (FIG. 2) the flag is raised interrupting the low ink sensor output beam and reflecting light back to sensor 13 to generate a cover open signal.

DPSS48

74 XEROX DISCLOSURE JOURNAL - Vol. 22, NO. 2 MXCIdAprill997

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