发明名称 |
Sheet creaser, sheet conveyer, sheet finisher, image forming apparatus, and sheet creasing method |
摘要 |
<p>A pressing unit presses a folded side of a stack of sheets folded by a folding unit (74, 81), thereby making a strong crease on the stack of sheets. The pressing unit includes a pressure roller (600) that slides on the folded side while rotating, an elastic biasing unit (609) that presses the pressure roller (600) in a thickness direction of the stack of sheets, and a driving unit (606, 607, 612) that slides the pressure roller (600) in a direction substantially perpendicular to a conveying direction of the stack of sheets. A lifting unit (602, 611), when the pressure roller (600) slides to a first position, temporarily lifts up the pressure roller (600), and when lifted-up pressure roller (600) slides to a second position, lifts the lifted-up pressure roller (600) down onto the folded side. The first position and the second position are located before a corner of the folded side, whereby the pressure roller (600) cannot slide up on the folded side.
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申请公布号 |
EP2090537(A3) |
申请公布日期 |
2010.03.17 |
申请号 |
EP20090250164 |
申请日期 |
2009.01.22 |
申请人 |
RICOH COMPANY, LTD. |
发明人 |
TAMURA, MASAHIRO;SUZUKI, NOBUYOSHI;NAGASAKO, SHUUYA;KIKKAWA, NAOHIRO;KOBAYASHI, KAZUHIRO;FURUHASHI, TOMOHIRO;HIDAKA, MAKOTO;TOKITA, JUNICHI;SAITO, TAKASHI;HATTORI, HITOSHI;KUNIEDA, AKIRA;MAEDA, HIROSHI;ICHIHASHI, ICHIRO;KURIYAMA, ATSUSHI |
分类号 |
B65H45/18 |
主分类号 |
B65H45/18 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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