The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Mar. 29, 1994
Filed:
Apr. 15, 1993
Tadahisa Oikawa, Iwate, JP;
Kabushiki Kaisha Sato, , JP;
Abstract
A mechanism for preventing slack in a printer carbon ribbon includes a reverse rotation mechanism for applying a rotational force to the carbon ribbon feed shaft in the reverse direction from that for feeding the carbon ribbon irrespective of the direction in which a label strip or other printable medium is being fed. The reverse rotation mechanism comprises a first reverse rotation sub-mechanism for applying a rotational force to the carbon ribbon feed shaft in the reverse direction from that for feeding the carbon ribbon when the printable medium is being fed in the forward direction and a second reverse rotation sub-mechanism for applying a rotational force to the carbon ribbon feed shaft in the reverse direction from that for feeding the carbon ribbon when the printable medium is being retracted in the reverse direction. The mechanism is particularly applicable where a drive motor is used both to move the printable medium and to take up the printer carbon ribbon. If the direction of the drive motor is reversed to move the printable medium in a reverse direction, the printer carbon ribbon will thus not be provided with slack.