Printing apparatus with first and second measuring means for...

Details Printing apparatus with first and second measuring means for... Printing apparatus with first and second measuring means for...

2006-09-12

2006-09-12

Colilla, Daniel J. (Department: 2854)

Typewriting machines

Including control of format by programmed-control-system

C400S572000, C400S634000

Reexamination Certificate

active

07104710

ABSTRACT:
A printing medium is conveyed at a high speed and high accuracy by reducing the conveyance error of a conveyor roller as much as possible. For this purpose, the printing apparatus includes first measuring unit for obtaining a conveying amount of said printing medium by measuring a rotational amount of the conveyor roller, second measuring unit for obtaining a conveying amount of the printing medium by directly detecting a moving amount of the printing medium, and control conveying operation by using both of output values obtained from the first measuring unit and the second measuring unit. Thereby, it is possible to correct the output value from the first measuring unit by the output value from the second measuring unit, as well as to switch the output value used for the conveyance control between both the output values.

REFERENCES:
patent: 6371592 (2002-04-01), Otsuka et al.
patent: 6497468 (2002-12-01), Otsuka
patent: 6599042 (2003-07-01), Wolf
patent: 6599043 (2003-07-01), Kobayashi et al.
patent: 6702274 (2004-03-01), Otsuka
patent: 6702492 (2004-03-01), Saito
patent: 6846058 (2005-01-01), Claramunt et al.
patent: 2002/0051028 (2002-05-01), Kobayashi et al.
patent: 2002/0051670 (2002-05-01), Saito
patent: 2002-128313 (2002-05-01), None
patent: 2002-137469 (2002-05-01), None

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