Browse Prior Art Database

Method for Ignoring a Punched Hole in Original Document

IP.com Disclosure Number: IPCOM000052557D
Original Publication Date: 1981-Jun-01
Included in the Prior Art Database: 2005-Feb-11
Document File: 3 page(s) / 30K

Publishing Venue

IBM

Related People

Kida, M: AUTHOR

Abstract

This article describes a concept of ignoring the presence of a punched hole in a scanned original document, wherein a counter is provided whose operation is controlled in response to the absence/presence of the original document at a sensor, and a determination is made as to whether the counter reaches a predetermined count value without being stopped.

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Method for Ignoring a Punched Hole in Original Document

This article describes a concept of ignoring the presence of a punched hole in a scanned original document, wherein a counter is provided whose operation is controlled in response to the absence/presence of the original document at a sensor, and a determination is made as to whether the counter reaches a predetermined count value without being stopped.

The sensor 1 is provided at the upper stream of a scanning station 2 in a facsimile apparatus. In the case where no punched hole is included in the original document 3, the sensor 1 is turned on by the passage of an original document 3 there below in the direction indicated by an arrow 4, as shown in Step (a), and is turned off by an absence of an original document 3, as shown in Step (e). The scanning station 2 is activated, in Step (b), when the leading edge of the original document 3 has been advanced from the sensor 1 to the scanning station 2. The scanning station is deactivated in Step (g) when the trailing edge of the original document 3 leaves the scanning station 2.

In the case where punched holes 5 are formed in the original document 3, the arrangement erroneously deactivates the scanning station.

The erroneous deactivation is caused by an undesirable turn off of the sensor 1 due to the detection of the hole 5, as shown in Step (c), so that the remaining portion beyond the hole in the remaining portion must be scanned.

To solve the problem, a counter is provided which starts its counting operation in response to the turn off of the sensor 1 to increment its counting value in synchronism with the movement of the original document 3, and stops the counting operation in response to the turn on of the sensor 1. Without being stopped, the counter reaches, in Step (f), to a predetermined count value, indicating a certain dista...