IMAGE READER AND IMAGE FORMATION DEVICE

PROBLEM TO BE SOLVED: To prevent distortion in a read-out image by changing a drive carrier speed of a rotor and by fixing a document carrier speed. SOLUTION: A document in a D section is carried by only a discharge roller 16 and has the drive carrier speed higher than that of a carrier roller 12 so...

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Bibliographic Details
Main Author MATOBA TAKESHI
Format Patent
LanguageEnglish
Published 18.01.2000
Edition7
Subjects
CINEMATOGRAPHY
CONVEYING
ELECTRIC COMMUNICATION TECHNIQUE
ELECTRICITY
ELECTROGRAPHY
ELECTROPHOTOGRAPHY
HANDLING THIN OR FILAMENTARY MATERIAL
HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS,CABLES
HOLOGRAPHY
MAGNETOGRAPHY
PACKING
PERFORMING OPERATIONS
PHOTOGRAPHY
PHYSICS
PICTORIAL COMMUNICATION, e.g. TELEVISION
STORING
TRANSPORTING
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Summary:PROBLEM TO BE SOLVED: To prevent distortion in a read-out image by changing a drive carrier speed of a rotor and by fixing a document carrier speed. SOLUTION: A document in a D section is carried by only a discharge roller 16 and has the drive carrier speed higher than that of a carrier roller 12 so that the document carrier speed is suppressed not to be increased, and the drive frequency f4 is set f4<f3<f2<f1 so that the document carrier speed Vd in the D section becomes same to the document carrier speed Vb in a B section. The document passing through the D section is carried and discharged on a discharge tray and the change in the drive rotation speed is performed by changing the drive frequency of a pulse motor, being the drive source. The repetition of the continuous action enables the read-out of the image information of a plurality of document surfaces. The second document or after are simultaneously fed when the rear end of the first document passes through the feed roller 6 and the nip of a separation pad 9.
Bibliography:Application Number: JP19980196772