- 专利标题: PRINTING METHOD, PRINTING APPARATUS, AND PRINTED MATTER
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申请号: US18005041申请日: 2021-08-20
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公开(公告)号: US20230331000A1公开(公告)日: 2023-10-19
- 发明人: Sei Yamamoto , Tomohiro Nakagawa , Kazuhiko Umemura , Yuya Hirokawa , Hiroki Hagiwara , Takuya Saiga
- 申请人: Sei Yamamoto , Tomohiro Nakagawa , Kazuhiko Umemura , Yuya Hirokawa , Hiroki Hagiwara , Takuya Saiga
- 申请人地址: JP Tokyo
- 专利权人: Ricoh Company, Ltd.
- 当前专利权人: Ricoh Company, Ltd.
- 当前专利权人地址: JP Tokyo
- 优先权: JP 20155061 2020.09.16 JP 21099313 2021.06.15
- 国际申请: PCT/IB2021/057662 2021.08.20
- 进入国家日期: 2023-01-10
- 主分类号: B41J2/21
- IPC分类号: B41J2/21 ; B41J11/00 ; B41M5/50
摘要:
A printing method involves applying a processing fluid containing a multivalent metal salt to a print medium, to form a processing fluid layer; applying a white ink containing a white coloring material and water to form a white ink layer; and applying a non-white ink containing a non-white coloring material and water to the white ink layer, after securing a time interval of 0.5 seconds or longer after the white ink is applied without drying with a drying unit after the white ink is applied. The print medium has a Cobb water absorption of 20 g/m2 or greater but 75 g/m2 or less when contacted with water for 120 seconds, where the Cobb water absorption is stipulated by JIS-P8140.
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