Browse Prior Art Database

A METHOD FOR MECHANICALLY CONNECTING TWO SENSORS TO PROVIDE THREE CONTROL SIGNALS

IP.com Disclosure Number: IPCOM000027737D
Original Publication Date: 1999-Apr-30
Included in the Prior Art Database: 2004-Apr-09
Document File: 4 page(s) / 113K

Publishing Venue

Xerox Disclosure Journal

Abstract

Disclosed is a method of mechanically connecting two sensors to replace the three normally required to define four condition states. An embodiment for a copy medium supply is shown in Figures 3 - 6. Figure 1 lists a truth table for the standard three-sensor implementation and Figure 2 lists a truth table for the disclosed two-sensor implementation. The truth table of Figure 2 results from defining two low (L) states for Sensor 1. The first appears at "Not Low Paper" and the second at "Paper Tray Out". As shown in Figures 3 and 6 a sensor flag 14 has two low positions.

This text was extracted from a PDF file.
At least one non-text object (such as an image or picture) has been suppressed.
This is the abbreviated version, containing approximately 57% of the total text.

Page 1 of 4

XEROX DISCLOSURE JOURNAL

A METHOD FOR MECHANICALLY CONNECTING TWO SENSORS TO PROVIDE THREE CONTROL SIGNALS
Walter F. Wafler

Proposed Classification
U. S. C1. 399/023 Int. C1. G03g 15/00

1 LOWPAPERI NOPAPER

I

I

TRAYOUT

I

NOT LOW PAPER

LOW PAPER

 OUT OF PAPER PAPER TRAY OUT

L L L H L L H H L LORH LORH H

FIG. 7

I

SENSOR1

I SENSOR2 I

NOT LOW PAPER

   LOW PAPER OUT OF PAPER PAPER TRAY OUT

L L H L H H L H

FIG. 2

XEROX DISCLOSURE JOURNAL - Vol. 24, No. 2 MarcWApril 1999 71

[This page contains 1 picture or other non-text object]

Page 2 of 4

A METHOD FOR MECHANICALLY CONNECTING TWO SENSORS TO PROVIDE THREE CONTROL SIGNALS (Cont'd)

\/ 0

- I 70

J

FIG. 3

72 FIG. 4

FIG. 5

I

r7

72

p@pq-=-5-=+5

FIG. 6

Disclosed is a method of mechanically connecting two sensors to replace the three normally required to define four condition states. An embodiment for a copy medium supply is shown in Figures 3 - 6. Figure 1 lists a truth table for the standard three-sensor implementation and Figure 2 lists a truth table for the disclosed two-sensor implementation. The truth table of Figure 2 results from defining two low (L) states for Sensor 1. The first appears at "Not Low Paper" and the second at "Paper Tray Out". As shown in Figures 3 and 6 a sensor flag 14 has two low positions.

72 XEROX DISCLOSURE JOURNAL - Vol. 24, No. 2 MarcWApril 1999

[This page contains 1 picture or other non-text object]

Page 3 of 4

A METHOD FOR MECHANICALLY CONNECTING TWO SENSORS TO PROVIDE THREE CONTROL SIGNALS (Cont'd)

Figure 3 illustrates the "Not Low Paper" state. The status for sensor 1 and sensor 2 are both Low. A paper stack 10 supported by tray 12 maintains sensor flags 14 and 16 upright so as not to obstruct sensors 1 and 2 and consequently allowing their output states to be Low. Figure 4 illustrates the "Low Paper" state where t...