EP 1057652 A2 20001206 - Printer and charging device
Title (en)
Printer and charging device
Title (de)
Drucker und Ladegerät
Title (fr)
Imprimante et dispositif de charge
Publication
Application
Priority
JP 14723399 A 19990526
Abstract (en)
The object of the present invention is to realize a charging device of a backup power supply for supplying power to perform backup operation to a printer by simplified circuit configuration. The other object of the present invention is to provide a printer which can decrease use of components such as a primary battery undesirable for environment and can realize low cost and low power consumption. The main power supply unit (6B) of the present invention transits to sleep mode from ON state when a panel switch (5) is turned off. A RTC (34) has a timer (34B) and a comparator (34C), checks output voltage of the rechargeable battery (36a) by the comparator (34C). When the comparator (34C) detected that the output voltage became lower than a reference voltage RefV, the RTC (34) outputs a power ON signal (34d) until the timer (34B) counts up 3 minutes. A second switch (38) is turned on by the power ON signal (34d), and the main power supply unit (6B) returns to ON state only for 3 minutes in order to charge the rechargeable battery (30a) by using power supplied from the main power supply unit (6B). <IMAGE>
IPC 1-7
IPC 8 full level
B41J 29/393 (2006.01)
CPC (source: EP)
B41J 29/393 (2013.01)
Designated contracting state (EPC)
AT BE CH CY DE DK ES FI FR GB GR IE IT LI LU MC NL PT SE
DOCDB simple family (publication)
EP 1057652 A2 20001206; EP 1057652 A3 20010822; EP 1057652 B1 20041013; AT E279322 T1 20041015; DE 60014764 D1 20041118; DE 60014764 T2 20050310
DOCDB simple family (application)
EP 00304308 A 20000522; AT 00304308 T 20000522; DE 60014764 T 20000522