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Patent Searching and Data

Document Type and Number:
WIPO Patent Application WO/2011/030644
Kind Code:
The disclosed powder-dispersing device (10) for printing disperses powder (3) for preventing offset on the surface of paper (1) post-printing while moving the paper (1), and is provided with a printed-paper-charging means (11) that electrically charges the paper (1) to be either positive or negative in polarity, a powder-charging means (12) that electrically charges the powder (3) to the opposite polarity of the charged paper (1), a powder-dispersing means (13) that disperses the charged powder (3) to the paper (1) downstream from the printed-paper-charging means (11) in the direction of motion of the paper (1), a humidity measuring means (14) that measures the humidity in the vicinity of the moving paper (1), and a control means (15) that controls the voltage used to electrically charge paper (1) in the printed-paper-charging means (11) and/or the voltage used to electrically charge powder (3) in the powder-charging means (12) in response to the measured humidity. As a result, irregularities in the quantity of adhered powder (3) caused by differences in humidity as well as an electric charge of the paper (1) after powder dispersion can be suppressed.

NAGAI, Hisao (12-2, Fukakusa Zendoji-cho, Fushimi-ku, Kyoto-sh, Kyoto 33, 〒6128433, JP)
Application Number:
Publication Date:
March 17, 2011
Filing Date:
August 10, 2010
Export Citation:
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COSMOTECH CO., LTD. (12-2, Fukakusa Zendoji-cho Fushimi-ku, Kyoto-sh, Kyoto 33, 〒6128433, JP)
株式会社コスモテック (〒33 京都府京都市伏見区深草善導寺町12-2 Kyoto, 〒6128433, JP)
International Classes:
B41F23/06; B41M7/02
Attorney, Agent or Firm:
KYOTO INTERNATIONAL PATENT LAW OFFICE (Hougen-Sizyokarasuma Building, 37 Motoakuozi-tyo,Higasinotouin Sizyo-sagaru,Simogyo-ku, Kyoto-si, Kyoto 91, 〒6008091, JP)
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