Letterpress unit

Patent Name Toppan Printing Unit Patent Applicant China Banknote and Mint Co., Ltd. Main Applicant Address 100044 Inventors Bi Ming, No. 143, Xizhimenwai Street, Xicheng District, Beijing Inventors Bi Ming, Jiao Yongli, Xu Yukun, Huang Yuzhen, Wu Shuofu, Han Xuyan, Shi Lei, Shao Jianbo Application (Patent) No. 200420072787.4 Date of application 2004.07.06 Approval date Approval Notice No. 2726875 Date of approval announcement 2005.09.21 Instruction CD No. D0538 Main classification number B41F5/16 Classification No. B41F5/16 Subdivision Original Application No. Priority Abstracts A relief printing unit for a letterpress printing press is disclosed. The relief printing unit includes an impression cylinder and a relief cylinder, and at least two color mode rollers are disposed on the relief cylinder. Each color mode roller and one color inking device are disclosed. Correspondingly, the ink of different colors is transferred to the letterpress cylinder by means of a color roller, and the relief roller cooperates with the impression cylinder to complete a multi-color printing. By arranging the color mold rollers between the relief cylinders so that they have a hardness difference of not less than 30° Shaw, the color mold rollers transfer inks of different colors to the relief cylinders by regions, so that the relief cylinders The impression cylinder can achieve a version of multi-color printing once on the press, thus providing technical support for reducing the volume of the multi-color printing press. Sovereignty Item 1. A relief printing unit, characterized in that it comprises an impression cylinder, a relief cylinder, and at least two color model rollers are disposed on the relief cylinder, and each color mode roller corresponds to a color ink inking device. By means of a color roller, different colors of ink are transferred to the letterpress cylinder in the form of area transfer ink, and the relief roller cooperates with the impression cylinder to complete a version of multi-color printing. International Application International Announcement Date of Entry into the Country Patent Agency Beijing Zhongchuang Sunshine Intellectual Property Agency Co., Ltd. Agent Address Yin Zhenqi