Image forming apparatus

Details Image forming apparatus Image forming apparatus

1984-12-21

1986-06-17

Grimley, Arthur T.

Photocopying

Projection printing and copying cameras

Combined with or convertible to a contact printer

355 14E, 355 8, 355 67, G03G 1500, G03G 1528, G03B 2754

Patent

active

045952787

ABSTRACT:
A copying machine has a document table on which a document is to be placed, an exposure lamp for exposing the document placed on the document table, a scanning circuit for reciprocating the exposure lamp with respect to the document so as to optically scan the document and an image forming unit for forming an image of the document in response to light reflected by the document scanned by the exposure lamp. Switches are provided for detecting that the exposure lamp is located at a scanning start position, a scanning end position and a position removed by a predetermined distance from the scanning start position. The exposure lamp is turned off at the scanning end position and is turned on when the exposure lamp is located at the position removed by the predetermined distance from the scanning start position before the exposure lamp returns to the scanning start position in the continuous copying mode. When the exposure lamp returns to the scanning start position, the amount of light emitted from the exposure lamp has reached a predetermined amount, and the copying machine is ready for the next copy operation.

REFERENCES:
patent: 4183656 (1980-01-01), Ishihara et al.
patent: 4217052 (1980-08-01), Tani et al.
patent: 4413900 (1983-11-01), Abe et al.

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