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Class 400/239 - With ribbon-reversing indicator or device on ribbon


Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein the ribbon* is of a kind which,
No. of patents: 7
Last issue date: 07/18/2000


NumberTitleIssue Date
6089768Print ribbon feeder and detection system
A clean print ribbon feed system and method for a printer having a ribbon with two non-inked clean hands portions wound around a pair of spools is disclosed. Detection of the spool having greater angular velocity and lesser angular velocity determines the...
07/18/2000
5605405Ink ribbon for a printer, typewriter or the like
An ink ribbon for a printer or the like has a leading and/or trailing, optically operative control strip. The control strip has only a first light-impervious or opaque control portion and a second transparent control portion. The control portion adjoining...
02/25/1997
5366303Printer ribbon motor controller
This disclosure sets forth a dot matrix printer having an improved ribbon drive. The ribbon drive is provided by two respective stepper motors. When one stepper motor is in a take-up mode, the second is in a feed mode. The process is reversed proximate th...
11/22/1994
5152625Dual use of ribbon sensor in a printing device
A recording device in which an ink ribbon is used and recording is performed shifting the ribbon in the direction of the width of the ribbon and having a sensor for detecting the end of an effective portion of the ribbon. Using the end sensor, the vertica...
10/06/1992
5110229Printing device having a ribbon cassette with a end of ribbon sensor
A printing device including a mounting base on which a ribbon cassette accommodating a ribbon having a transparent terminal end part is removably loaded, light emitting and receiving elements fixed on the mounting base and a reflective plate fixed on the ...
05/05/1992
5005999Ink cassette with control means for alternately driving one of two spool bearing therein
An ink ribbon cassette includes two rotatable bearings for respective spools, a drive system for alternately rotating one or the other of the two bearings so that a ribbon extending between the spools positioned on the bearings will be moved in opposite d...
04/09/1991
4496955Apparatus for thermal printing
Apparatus for thermally printing images, such as color images, on a print medium. The medium is moved repeatedly from a reference position through a printing region, as by rotating the medium on a platen. Thermal print elements are disposed at the print r...
01/29/1985
 
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