Method and apparatus for controlling supply of electric power to an indicator for indicating a state of the apparatus
US5697717A · kind A · utility
4Cited by
10References
33Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 27, 1995 |
| Grant date | Dec 16, 1997 |
| Priority date | — |
| Expiry date | Sep 27, 2015 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB41J29/393
- WIPO fieldTextile and paper machines
- WIPO sectorMechanical engineering
Abstract
A printer has an electric power supply controller which controls electric power supplied to an indicator indicating a state of the printer so as to prolong a driving time of the printer, which is driven by a battery. When the apparatus is set to an on-line state using an on-line key, electric power is initially supplied to an on-line LED, which indicates the apparatus is in the on-line state. Afterwards, when a predetermined time period has passed, the supply of electric power is cut off to the on-line LED, whereby the consumption of electric power supplied to the indicator can be minimized.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.