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Patent Searching and Data


Title:
POWDER-DISPERSING DEVICE FOR PRINTING
Document Type and Number:
WIPO Patent Application WO/2011/030644
Kind Code:
A1
Abstract:
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.

Inventors:
NAGAI, Hisao (12-2, Fukakusa Zendoji-cho, Fushimi-ku, Kyoto-sh, Kyoto 33, 〒6128433, JP)
Application Number:
JP2010/063560
Publication Date:
March 17, 2011
Filing Date:
August 10, 2010
Export Citation:
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Assignee:
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
Foreign References:
JPS5871165A1983-04-27
JPS6268754A1987-03-28
JP2002522277A2002-07-23
JP2003050485A2003-02-21
JPS6032032U1985-03-05
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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