Apparatus for simultaneous reading of reflective and light conductive portions of an original
AssigneeCanon Kabushiki Kaisha
InventorMasanori Yamada
Life of this patent
Estimating the term…
Abstract
An original is placed on an original support of an original-reading apparatus. A reflecting original is exposed to a first light source. A light conductive original is exposed to a second light source. The light image reflected from the reflecting original and the light image passing through the light conductive original are read optoelectrically by a reading device which outputs image signals representative of the light images. The positions of reflecting original and the light conductive original are detected by a detecting device which outputs position detection signals. A control device controls the original-reading operation of the reading device in accordance with the position detection signal.
Claims18
An original-reading apparatus comprising:
- an original support on which an original is placed;
- a first light source for exposing a reflecting portion of an original placed on said original support;
- a second light source for exposing a light conductive portion of the original placed on said original support;
- reading means for optoelectrically performing an original-reading operation to output an image signal by reading a light image reflected from the reflecting and light conductive portions of the original;
- detecting means for detecting positions of the reflecting portion and the light conductive portion both on the same original which is placed on said original support to output a position detection signal;
- and
- control means for controlling an image area to be read by said reading means in accordance with the position detection signal.
An original-reading apparatus comprising:
- an original support on which an original is placed;
- a first light source for exposing a reflecting original placed on said original support;
- a second light source for exposing a light conductive original placed on said original support;
- reading means for optoelectrically performing an original-reading operation by reading a light image reflected from the reflecting original and light image passing through the light conductive original to output an image signal;
- setting means for setting either a first mode to read the reflecting original or a second mode to read both the reflecting original and the light conductive original;
- and
- control means for controlling said first and second light sources so that said first light source lights up when the first mode is set by said setting means and said first and second light sources simultaneously light up when the second mode is set by said setting means.
An original-reading apparatus comprising:
- an original support on which an original is placed;
- a first light source for exposing a reflecting portion of the original placed on said original support;
- a second light source for exposing a light conductive portion of the original placed on said original support;
- reading means for optoelectrically performing an original-reading operation to output an image signal by reading a light image reflected form the reflecting portion and a light passing through the light conductive portion;
- detecting means for detecting a position of the reflecting portion of the original when said first light source lights up, and for detecting a position of the light conductive portion of the original when said second light source lights up;
- and
- control means for controlling an image area to be read by said reading means in accordance with a position detection result of said detecting means.
An original-reading apparatus comprising:
- an original support on which an original is placed;
- a first light source for exposing a frame portion of a frame-mounted film placed on said original support;
- a second light source for exposing a film portion of the frame-mounted film placed on said original support;
- reading means for optoelectrically performing an original-reading operation to output an image signal by reading a first light image received from the frame portion of the frame-mounted film and a second light image received form the film portion of the frame-mounted film;
- detecting means for detecting positions of the frame portion and the film portion of the frame-mounted film on said original support;
- and
- control means for controlling an image area to be read by said reading means in accordance with the result of detection by said detection means.
Dependencies are inferred from the claim text.