Title: Method and appts for defectless printing bill when abnormal cut off of tax control of cash register
Application Number: 200410067290 Application Date: 2004.10.19
Publication Number: 1601441 Publication Date: 2005.03.30
Approval Pub. Date: Granted Pub. Date:
International Classifi-cation: G06F1/30,G07G1/12
Applicant(s) Name: Three-D Tech Co., Ltd., Ningbo Address: 315040
Inventor(s) Name: Li Gang, Chen Haixia
Attorney & Agent: yang gao
Abstract:
     The invention relates to a method for printing defectless bill when the tax-controlled cash machine is abnormally switched off and its device. Said device includes microprocessor, external data memory, keyboard drive circuit, displaying drive circuit, RS232 interface and power supply circuit. The input end of said microprocessor is connected with power-off detection circuit and power-off protection circuit, its output end is connected with printer motor control circuit and print wire control circuit. Besides, said invention also provides its working principle and its concrete steps for ensuring that when the tax-controlled cash machine is abnormally switched off, its printer still can print the defetless bill.
Time: 6
<- Previous Patent:Finance tax cash register   |  Next Patent:Parking lot charging system havin... ->