Image reader and image forming apparatus

There are provided an image reader with high resolution capability for images in a high density range and an image forming apparatus. An image reader 2 comprises a reflected light reading unit (11, 12, 13, 14, 10) for irradiating a surface to be read of an original sheet with a light and reading the...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	NAIKI SHIGEKI, KOUZAKI MASAHIRO, SAKAI TETSUYA
Format:	Patent
Sprache:	eng
Schlagworte:	CALCULATING CINEMATOGRAPHY COMPUTING COUNTING ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY ELECTROGRAPHY ELECTROPHOTOGRAPHY HANDLING RECORD CARRIERS HOLOGRAPHY MAGNETOGRAPHY PHOTOGRAPHY PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRESENTATION OF DATA RECOGNITION OF DATA RECORD CARRIERS
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Beschreibung
Zusammenfassung:	There are provided an image reader with high resolution capability for images in a high density range and an image forming apparatus. An image reader 2 comprises a reflected light reading unit (11, 12, 13, 14, 10) for irradiating a surface to be read of an original sheet with a light and reading the amount of the reflected light and a transmitted light reading unit (15, 12, 13, 14, 10) for irradiating the original sheet with a light and reading the amount of the transmitted light, and calculates the density of an image of the original sheet based on the amount of the reflected light read by the reflected light reading unit and the amount of the transmitted light read by the transmitted light reading unit.