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:
Sep. 20, 1988
Filed:
Aug. 06, 1986
Susumu Arauchi, Iwate, JP;
Alps Electric Co., Ltd., , JP;
Abstract
A print head drive system of the type wherein there is provided a one-shot generating circuit for generating one-shot pulses in response to an instruction given from a processor and the energization of a head is effected in response to the one-shot pulse supplied from the one-shot generating circuit, characterized in that there is included a mechanical trouble detector for detecting occurrence of trouble, the pulse duration of one-shot pulse generated in the one-shot generating circuit is made shorter than the time interval during which the energization of the head is effected in the normal operating time, and the processor issues during the normal operating time the instruction plural times to the one-shot generating circuit, whereby when abnormal operation is detected by the mechanical trouble detector, generation of one-shot pulse is inhibited, so that the time interval of energization of the head is shortened.