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Arrangement for Increasing Throughput of a Printer while Reducing its Noise

IP.com Disclosure Number: IPCOM000040788D
Original Publication Date: 1987-Jan-01
Included in the Prior Art Database: 2005-Feb-02
Document File: 1 page(s) / 12K

Publishing Venue

IBM

Related People

Kelsey, RD: AUTHOR [+3]

Abstract

A switch may be utilized with a printer to enable it to change the distance between two printable characters at which it performs print operation to move from the end of one of two printable characters to the start of the other and the distance at which it performs a tab operation for this movement.

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Arrangement for Increasing Throughput of a Printer while Reducing its Noise

A switch may be utilized with a printer to enable it to change the distance between two printable characters at which it performs print operation to move from the end of one of two printable characters to the start of the other and the distance at which it performs a tab operation for this movement.

When receiving space codes from a host computer, a printer is designed to perform a print operation for two or less consecuti space codes between two printable characters and a tab operation for three or more consecutive space codes between two printable characters. When printing tabulated data such as a spread sheet, for example, machine throughput becomes slow because of the large number of carrier accelerations and decelera- tions created by the tab operations. Carrier acceleration and deceleration also increase machine acoustic level because of the motions of the printhead.

The reason for the use of the tab operation with three or more consecutive space codes between two printable characters is to conserve ribbon since the print mechanism does not feed ribbon during a tab operation. Therefore, it is desired to use the present arrangement in order to conserve ribbon unless there is going to be a lot of tabulation.

Tests have indicated that throughput of the printer can be increased by using the print space operation rather than the tab space operation until the distance of the consecutive s...