Browse Prior Art Database

Paper Filling Level Indicator for Self-Service Printers

IP.com Disclosure Number: IPCOM000119203D
Original Publication Date: 1996-Mar-01
Included in the Prior Art Database: 2005-Apr-01
Document File: 2 page(s) / 61K

Publishing Venue

IBM

Related People

Abendschein, U: AUTHOR [+9]

Abstract

Proposed is a device to use paper packaged in standard paper boxes (3) in self-service printers (4) without having to remove the paper from the standard shipping carton (Figure). For printer devices with a high data throughput, usually an endless paper format is provided.

This text was extracted from an ASCII text file.
This is the abbreviated version, containing approximately 89% of the total text.

Paper Filling Level Indicator for Self-Service Printers

      Proposed is a device to use paper packaged in standard paper
boxes (3) in self-service printers (4) without having to remove the
paper from the standard shipping carton (Figure).  For printer
devices with a high data throughput, usually an endless paper format
is provided.

      In prior art approaches, optical filling level indicators are
used which presume the paper stack be optically accessible from at
least one side.  Accessiblity is achieved by removing the paper stack
from the carton before use, or by use of particular cartons whose
upper parts can be removed separately from the lower parts.

      According to this approach, a mechanical weight mechanism is
integrated into the bottom of the papertray.  It consists of a spring
(1) with a sensorflag and an optical sensor (2).  The force of the
spring is adjustable to papers of different specific weights, or to
control the switching point of the proposed indicator.

      When a full paper stack is put into the printer device as
illustrated at the right side of the Figure, the spring (1) distorts
and masks the optical sensor (2).  With the proceeding consumption of
paper, the carton is losing weight.  Therefore, the spring will
straighten and set free the sensor.  Now a signal is delivered to the
user who comes to know when, exactly, the paper has to be refilled.

      By means of the proposed device, standard cartons can be used
...