Typewriting machines – Including interposed inking device for record-medium – Including mechanism for shifting ribbon laterally at...
Patent
1987-04-20
1989-04-11
Wright, Jr., Ernest T.
Typewriting machines
Including interposed inking device for record-medium
Including mechanism for shifting ribbon laterally at...
400212, 400240, 4002404, 400248, B41J 3514
Patent
active
048200689
ABSTRACT:
An impact printer has a print ribbon that is divided into horizontal colored strips to enable color printing. A printhead is mounted on a moving carriage that moves across the width of a printing medium upon which the printing is to be deposited. The print ribbon also moves relative to the carriage. A ribbon shift mechanism is configured to include a print ribbon guide, the ribbon shift mechanism being slideably mounted in the carriage to move in a vertical direction relative thereto. A wire matrix printhead is connected to the carriage and has a printing end adjacent the print ribbon. A gear shaft is positioned to engage the gear sections of a pair of racks that are connected to the ribbon shift mechanism and which pass through the carriage. When the gear shaft is turned, the racks are engaged which cause the ribbon shift mechanism, and the print ribbon, to move either up or down thereby presenting a desired color to the printing end of the printhead. Printing is then performed in the desired color until a color change is required.
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IBM Technical Disclosure Bulletin, "Color Ribbon Shift Mechanism", vol. 28, No. 9, Feb. 1986, pp. 3879-3880.
Comfort James T.
Devine Thomas G.
Sharp Melvin
Texas Instruments Incorporated
Wright, Jr. Ernest T.
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