Search International and National Patent Collections

1. (WO2018048403) PRINTER DRYER MONITOR

Pub. No.:    WO/2018/048403    International Application No.:    PCT/US2016/050723
Publication Date: Fri Mar 16 00:59:59 CET 2018 International Filing Date: Fri Sep 09 01:59:59 CEST 2016
IPC: B41J 29/00
H02P 7/00
F26B 21/10
Applicants: HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.
Inventors: KAPP, Tyler
Title: PRINTER DRYER MONITOR
Abstract:
A circuit includes a pulse generator to generate an output pulse in response to a signal representing rotation of a fan. A timing relationship between output pulses represents speed of the fan. A filter circuit converts the output pulse to a direct current (DC) voltage signal proportional to the speed of the fan. A monitor circuit monitors the DC voltage signal with respect to a predetermined threshold and generates a control signal that disables a printer dryer if the DC signal does not satisfy the predetermined threshold.