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1. 发明专利

JP4071352B2 Gamma adjustment for an image forming apparatus, gamma adjustment method and a recording medium 失效
公开(公告)号：JP4071352B2
公开(公告)日：2008-04-02
申请号：JP12198998
申请日：1998-05-01
申请人：大日本印刷株式会社
发明人：嘉夫奥村 , 宏明滝田
IPC分类号： H04N5/202 , G06T1/00 , G06T11/60 , G09G1/28

2. 发明专利

JP3683994B2 How to determine the copied material 失效
公开(公告)号：JP3683994B2
公开(公告)日：2005-08-17
申请号：JP18341296
申请日：1996-07-12
申请人：大日本印刷株式会社
发明人：芳明工藤 , 徹杉山 , 宏明滝田
IPC分类号： B41M3/14
摘要： PROBLEM TO BE SOLVED: To easily identify the original of printed matter and its duplication by determining the presence of a moire pattern in both cases that a discriminating tool is stacked on printed matter and that the discriminating tool is stacked on the duplication of printed matter to distinguish between the printed matter and the duplication. SOLUTION: An identification area 5 is provided on printed matter 1. In the discrimination area 5, cyan, magenta and yellow dots are regularly arranged with a reference line. An discriminating tool 3 has a transparent area and a concealing area. The concealing area is provided in such a manner that only a specific color pattern in the discrimination area 5 of the printed matter 1 is concealed. If the discriminating tool 3 is placed on the printed matter 1, the color pattern in the discrimination area 5 is unbalanced to generate a moire pattern. Further, if the discriminating tool 3 is placed on a duplication in lieu of the printed matter 1, the moire pattern does not appear. Thus it is possible to easily distinguish between the original of the printed matter 1 and the duplication.

3. 发明专利

JP4144040B2 Gravure printing for the image processing apparatus 失效
公开(公告)号：JP4144040B2
公开(公告)日：2008-09-03
申请号：JP35455196
申请日：1996-12-19
申请人：大日本印刷株式会社
发明人：道夫倉田 , 芳明工藤 , 宏明滝田
IPC分类号： G06T5/20 , H04N1/409
摘要： PROBLEM TO BE SOLVED: To correct the sharpness of a border line based on a quantitative standard in order to obtain the image data which are suitable to a gravure engraving machine. SOLUTION: When three parameters p (peak frequency), q (peak amplitude magnification) and c (cut-off frequency) are inputted to a parameter input part 21, three points Q1 (0, 1), Q2 (p, q) and Q3 (c, 0) are defined at a frequency characteristic definition part 22. These three points can be smoothly connected together in a graph and also the space frequency characteristic γ (f) is defined to give the amplitude magnification γ=0 to the frequency (f) of f>c. A space filter production part 23 divides the characteristic γ(f) by the space frequency characteristic α (f) of a scanner input mode to decide the space frequency characteristic β (f). Thus, a space filter F is produced in accordance with the characteristic β (f). Then a filtering process is applied to the image data inputted by a scanner via the filter F, so that a corrected image having the desired sharpness is acquired.

4. 发明专利

JP4132122B2 Printed matter, how to determine the discrimination tool, forming method and a copy of the image 失效
公开(公告)号：JP4132122B2
公开(公告)日：2008-08-13
申请号：JP5292797
申请日：1997-03-07
申请人：大日本印刷株式会社
发明人：芳明工藤 , 徹杉山 , 宏明滝田
IPC分类号： B41M3/14 , B42D15/10
摘要： PROBLEM TO BE SOLVED: To form images according to a phase modulation method by superposing a distinction instrument on a print object by making a first direction of the print object coincide with a direction of a parallel line pattern and, superposing the distinction instrument on the print object by making a second direction of the print object coincide with the direction of the parallel line pattern. SOLUTION: Small patterns 9 are buried beforehand in a print object 1 so that a first image is formed in a state a distinction instrument 3 is superposed on the print object 1 and a second image is formed in a state the distinction instrument 3 rotated by 90 deg. is superposed on the print object 1. That is, a position of each small pattern 9 is determined so that the first image is formed when the distinction instrument 3 is applied on the print object 1, and the second image is formed when the distinction instrument 3 rotated by 90 deg. is placed on the object. According to the embodiment, different images can be formed between when the distinction instrument 3 is placed on the print object 1 and when the distinction instrument 3 is rotated by 90 deg..

5. 发明专利

JP3996241B2 Gravure printing method and gravure print 失效
公开(公告)号：JP3996241B2
公开(公告)日：2007-10-24
申请号：JP19183997
申请日：1997-07-02
申请人：大日本印刷株式会社
发明人：芳明工藤 , 俊明市原 , 豊恒川 , 宏明滝田
IPC分类号： B41C1/045 , B41C1/05 , B41M1/10 , B41N1/06

6. 发明专利

JP3996240B2 Gravure printing method and gravure print 失效
公开(公告)号：JP3996240B2
公开(公告)日：2007-10-24
申请号：JP19183797
申请日：1997-07-02
申请人：大日本印刷株式会社
发明人：芳明工藤 , 俊明市原 , 豊恒川 , 宏明滝田
IPC分类号： B41C1/045 , B41C1/05 , B41M1/10 , B41N1/06

7. 发明专利

JP4040722B2 Gravure printing method and gravure print 失效
公开(公告)号：JP4040722B2
公开(公告)日：2008-01-30
申请号：JP19183897
申请日：1997-07-02
申请人：大日本印刷株式会社
发明人：道夫倉田 , 芳明工藤 , 俊明市原 , 豊恒川 , 宏明滝田
IPC分类号： B41C1/045 , B41C1/05 , B41M1/10 , G03F5/00

8. 发明专利

JP4040721B2 Gravure printing method and gravure print 失效
公开(公告)号：JP4040721B2
公开(公告)日：2008-01-30
申请号：JP19183697
申请日：1997-07-02
申请人：大日本印刷株式会社
发明人：芳明工藤 , 俊明市原 , 豊恒川 , 宏明滝田
IPC分类号： B41C1/045 , B41C1/05 , B41M1/10 , B41N1/06

9. 发明专利

JP3789985B2 How to determine the copy product, print and determine tool 失效
公开(公告)号：JP3789985B2
公开(公告)日：2006-06-28
申请号：JP25796196
申请日：1996-09-30
申请人：大日本印刷株式会社
发明人：芳明工藤 , 徹杉山 , 宏明滝田
IPC分类号： B41M3/14

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