Image forming apparatus having cooling efficiency switching control function
US4903072A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 23, 1988 |
| Grant date | Feb 20, 1990 |
| Priority date | — |
| Expiry date | May 23, 2008 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG03G21/206
- WIPO fieldOptics
- WIPO sectorInstruments
Abstract
An image forming apparatus of the invention has a cooling fan which is used for forcibly decreasing a temperature raised by heat generated as a result a copying operation being performed, and which can be switched between high-speed/low-speed rotation modes. The image data on a document supported on an original table is exposed by an exposure lamp, regulated by a lamp regulator under the control of a main controller, and is optically scanned. The main controller forms an optical image corresponding to the image data on a photoconductive drum, develops it by means of a developing unit having a solenoid, and forms the developed image on a sheet. The image formed on the sheet is fixed by a fixing unit having a heater lamp under the control of a fixing unit controller. A cooling fan controller drives the cooling fan in a high-speed mode during the above copying operation and for a predetermined period of time after completion of the copying operation, thereby cooling the interior of the apparatus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.