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:
May. 14, 2002
Filed:
May. 28, 1999
Masahiro Katagiri, Nagano-ken, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
Peripheral device, specifically a printer, power on/off status is monitored on the host computer to prevent an erroneous operation resulting from printer resets caused by printer power being turned off and on. A printer power monitoring method implemented in a host computer monitors printer power supply status in a printer capable of sending to the host computer status information resulting from a change in printer status, including a drop in printer power supply voltage below a specific threshold level. The printer power monitoring method has a step of receiving status information sent from the printer; a step of requesting current status information from the printer after the printer status information has been received; and a step of determining that printer power is off if a response to the current status information request is not received.