OPTICAL SCANNER AND IMAGE FORMING APPARATUS
PROBLEM TO BE SOLVED: To provide a novel optical scanner which detects scanning misregistration in a sub-scanning direction with a compact device configuration, and an image forming apparatus including the optical scanner.SOLUTION: An optical scanner includes: N inspection light sources for forming...
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| creator | AKAISHI RYOSUKE |
| description | PROBLEM TO BE SOLVED: To provide a novel optical scanner which detects scanning misregistration in a sub-scanning direction with a compact device configuration, and an image forming apparatus including the optical scanner.SOLUTION: An optical scanner includes: N inspection light sources for forming N main-scanning lines continuous in a sub-scanning direction; at least one optical detection sensor arranged on an extension of an image surface of a photoreceptor, and having a light-receiving surface with two light receiving elements arranged side by side at a predetermined distance in the sub-scanning direction, and comparators arranged for each light receiving element and outputting a result of comparing an output signal level according to the amount of light received by the light receiving element with a reference level; and misregistration detection means which detects scanning misregistration in the sub-scanning direction on the basis of the outputs of the two comparators. The two light receiving elements are provided with optical scanners arranged side by side line-symmetrically with respect to a line which divides a bundle of N (N is an integer of 1 or larger) main scanning lines into two in the sub-scanning direction. |
| format | Patent |
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The two light receiving elements are provided with optical scanners arranged side by side line-symmetrically with respect to a line which divides a bundle of N (N is an integer of 1 or larger) main scanning lines into two in the sub-scanning direction.</description><language>eng</language><subject>CORRECTION OF TYPOGRAPHICAL ERRORS ; ELECTRIC COMMUNICATION TECHNIQUE ; ELECTRICITY ; i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME ; LINING MACHINES ; OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS ; OPTICS ; PERFORMING OPERATIONS ; PHYSICS ; PICTORIAL COMMUNICATION, e.g. TELEVISION ; PRINTING ; SELECTIVE PRINTING MECHANISMS ; STAMPS ; TRANSPORTING ; TYPEWRITERS</subject><creationdate>2014</creationdate><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktohtml>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140724&DB=EPODOC&CC=JP&NR=2014134628A$$EHTML$$P50$$Gepo$$Hfree_for_read</linktohtml><link.rule.ids>230,308,780,885,25564,76547</link.rule.ids><linktorsrc>$$Uhttps://worldwide.espacenet.com/publicationDetails/biblio?FT=D&date=20140724&DB=EPODOC&CC=JP&NR=2014134628A$$EView_record_in_European_Patent_Office$$FView_record_in_$$GEuropean_Patent_Office$$Hfree_for_read</linktorsrc></links><search><creatorcontrib>AKAISHI RYOSUKE</creatorcontrib><title>OPTICAL SCANNER AND IMAGE FORMING APPARATUS</title><description>PROBLEM TO BE SOLVED: To provide a novel optical scanner which detects scanning misregistration in a sub-scanning direction with a compact device configuration, and an image forming apparatus including the optical scanner.SOLUTION: An optical scanner includes: N inspection light sources for forming N main-scanning lines continuous in a sub-scanning direction; at least one optical detection sensor arranged on an extension of an image surface of a photoreceptor, and having a light-receiving surface with two light receiving elements arranged side by side at a predetermined distance in the sub-scanning direction, and comparators arranged for each light receiving element and outputting a result of comparing an output signal level according to the amount of light received by the light receiving element with a reference level; and misregistration detection means which detects scanning misregistration in the sub-scanning direction on the basis of the outputs of the two comparators. 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The two light receiving elements are provided with optical scanners arranged side by side line-symmetrically with respect to a line which divides a bundle of N (N is an integer of 1 or larger) main scanning lines into two in the sub-scanning direction.</abstract><oa>free_for_read</oa></addata></record> |
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| subjects | CORRECTION OF TYPOGRAPHICAL ERRORS ELECTRIC COMMUNICATION TECHNIQUE ELECTRICITY i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME LINING MACHINES OPTICAL ELEMENTS, SYSTEMS, OR APPARATUS OPTICS PERFORMING OPERATIONS PHYSICS PICTORIAL COMMUNICATION, e.g. TELEVISION PRINTING SELECTIVE PRINTING MECHANISMS STAMPS TRANSPORTING TYPEWRITERS |
| title | OPTICAL SCANNER AND IMAGE FORMING APPARATUS |
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