Reader/printer device with power saver function and print number reset
US5016052A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Nov 7, 1989 |
| Grant date | May 14, 1991 |
| Priority date | — |
| Expiry date | Nov 7, 2009 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G15/223
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
This invention provides a microfilm reader/printer which in the power saving mode, namely, in the case when the machine is not in use, though the power is turned on, interrupts the supply of power to the unnecessary circuits, in particular, power to the light source drive for projecting microfilms is interrupted. Therefore, power consumption can be reduced as well as a prolongation of the life of the light source device can be realized. In addition, this microfilm reader/printer is designed so that the printing operation will not return to a prescribed printing mode even when the printing is interrupted for a fixed length of time, so that no misprints will occur even when a printing operation is resumed after a fixed length of time. Furthermore, this microfilm reader/printer device is reset to a prescribed number of prints after completion of the printing operation so that in the next printing the number of prints made will not be beyond what is needed even when the printing is carried out without confirmation of the set number of prints by the next operator. Thus, operation can be made economical by eliminating the wasteful use of energy, elements of the apparatus, and operating s…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.