Browse Prior Art Database

PROGRAMMABLE CUSTOMER CHANGEABLE UNIT IDENTIFIER

IP.com Disclosure Number: IPCOM000027075D
Original Publication Date: 1995-Feb-28
Included in the Prior Art Database: 2004-Apr-07
Document File: 2 page(s) / 77K

Publishing Venue

Xerox Disclosure Journal

Abstract

The present disclosure is directed toward a low-cost, highly-reliable method of identifying customer changeable units (CCU's) in a printing system, for example, the Xerox 4850 Laser Printing System. In the case of a CCU in which toner is a component, the CCU's are often stocked without toner in the field so as to enable the addition of the required color of toner at the customer site. Unfortunately, this presents a problem when multiple color toners, and CCU's are available, as the printing system is unable to ascertain the color of toner loaded in the CCU. Hence, the CCU must be "field-programmable" in some fashion to enable the printing system to "read" the toner color once the CCU is installed.

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XEROX DISCLOSURE JOURNAL

PROGRAMMABLE CUSTOMER Proposed Classification CHANGEABLE UNIT IDENTIFIER U.S. C1.3551326R Paul H. Chalupa Int. C1. G03g 15/01

The present disclosure is directed toward a low-cost, highly-reliable method of identifying customer changeable units (CCU's) in a printing system, for example, the Xerox 4850 Laser Printing System. In the case of a CCU in which toner is a component, the CCU's are often stocked without toner in the field so as to enable the addition of the required color of toner at the customer site. Unfortunately, this presents a problem when multiple color toners, and CCU's are available, as the printing system is unable to ascertain the color of toner loaded in the CCU. Hence, the CCU must be "field-programmable" in some fashion to enable the printing system to "read" the toner color once the CCU is installed.

Accordingly, the present disclosure proposes the use of a multi-pin "programmable" connector that would be present on the CCU. More specifically, the connector is one that would provide the digital connections necessary for use of the CCU, along with a number of "programmable" connections, and a logic ground. To program the connector, the appropriate wire connections are made between various pins of the programmable connector so that once it is installed in the printing system a unique hexadecimal "number" is produced when the programmed pins of the connector are queried by the printing system. The programmable connector...