JPH0332794B2 - - Google Patents

Info

Publication number
JPH0332794B2
JPH0332794B2 JP58196724A JP19672483A JPH0332794B2 JP H0332794 B2 JPH0332794 B2 JP H0332794B2 JP 58196724 A JP58196724 A JP 58196724A JP 19672483 A JP19672483 A JP 19672483A JP H0332794 B2 JPH0332794 B2 JP H0332794B2
Authority
JP
Japan
Prior art keywords
latent image
reproduced
pattern
background
paper
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
JP58196724A
Other languages
English (en)
Japanese (ja)
Other versions
JPS6087380A (ja
Inventor
Shohei Tsucha
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
HOSOKAWA KATSUPANSHO KK
Original Assignee
HOSOKAWA KATSUPANSHO KK
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by HOSOKAWA KATSUPANSHO KK filed Critical HOSOKAWA KATSUPANSHO KK
Priority to JP58196724A priority Critical patent/JPS6087380A/ja
Publication of JPS6087380A publication Critical patent/JPS6087380A/ja
Publication of JPH0332794B2 publication Critical patent/JPH0332794B2/ja
Granted legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G03—PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03G—ELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G21/00—Arrangements not provided for by groups G03G13/00 - G03G19/00, e.g. cleaning, elimination of residual charge
    • G03G21/04—Preventing copies being made of an original
    • G03G21/043—Preventing copies being made of an original by using an original which is not reproducible or only reproducible with a different appearence, e.g. originals with a photochromic layer or a colour background

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Credit Cards Or The Like (AREA)
  • Printing Methods (AREA)
JP58196724A 1983-10-20 1983-10-20 印刷物における複写防止用潜像のカムフラ−ジ法 Granted JPS6087380A (ja)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP58196724A JPS6087380A (ja) 1983-10-20 1983-10-20 印刷物における複写防止用潜像のカムフラ−ジ法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP58196724A JPS6087380A (ja) 1983-10-20 1983-10-20 印刷物における複写防止用潜像のカムフラ−ジ法

Publications (2)

Publication Number Publication Date
JPS6087380A JPS6087380A (ja) 1985-05-17
JPH0332794B2 true JPH0332794B2 (en]) 1991-05-14

Family

ID=16362538

Family Applications (1)

Application Number Title Priority Date Filing Date
JP58196724A Granted JPS6087380A (ja) 1983-10-20 1983-10-20 印刷物における複写防止用潜像のカムフラ−ジ法

Country Status (1)

Country Link
JP (1) JPS6087380A (en])

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3242971B2 (ja) * 1992-02-27 2001-12-25 キヤノン株式会社 画像処理装置およびその方法
US6421145B1 (en) 1992-09-28 2002-07-16 Canon Kabushiki Kaisha Image processing apparatus and method using image information and additional information or an additional pattern added thereto or superposed thereon
JP3566334B2 (ja) * 1994-03-25 2004-09-15 キヤノン株式会社 画像処理装置およびその方法
JP6948031B2 (ja) * 2018-05-22 2021-10-13 独立行政法人 国立印刷局 偽造防止用印刷物

Also Published As

Publication number Publication date
JPS6087380A (ja) 1985-05-17

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