Image forming apparatus having cooling efficiency switching cont

Details Image forming apparatus having cooling efficiency switching cont Image forming apparatus having cooling efficiency switching cont

1988-05-23

1990-02-20

Hix, L. T.

Photocopying

Projection printing and copying cameras

With temperature or foreign particle control

G03B 2752

Patent

active

049030728

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.

REFERENCES:
patent: 4303334 (1981-12-01), Haupt et al.

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