The Research Of The Factors Influencing The Changes Of Seals And Stamps Characteristics

Seals is a kind mold, made by the government, companies or personal.The seals on the paper is the reflect of the structure of the surface ofthe seal. With the development of our society and economy, there are moreand more cases of seals identification. The high simulate seals and therequest to identify the time of the seals been printed bring biggerchallenges to the expert of document inspection. Seals may be changed whenthey are printed because of the influencing factors. Being influenced,they can be different from the normal seals, and they change by periods.During the identification works, we need to distinguish the change of oneseals and the difference between different seals, and work out thevariation of the characteristics of seals.In view of this, the author wrote this paper to investigate severalmost important factors and how they influence the changes of sealscharacteristics.The first chapter is the outline of the characteristics system ofseals and stamps, which is the basic for the identification of seals andstamps, is divided into four sections. SectionⅠdivides seals and stampsinto two category, traditional seals and photosensitive seals, according to the production method and the way to print. This section also describetheir basic species characteristics. Section Ⅱ is an overview of theoverall characteristics of seals. Section Ⅲ is an overview of the detailcharacteristics of seals. Section Ⅳ describes the variability of thecharacteristics of seals.The second chapter is the research of the influencing factors and thecharacteristics variation of the traditional seals and is divided intotwo sections. Section Ⅰ describes the basic of traditional seals,include the production method and the way to print. Section Ⅱ listsseveral most important influencing factors and outlines the observationof the variation of characteristics.The third chapter is the research of the influencing factors and thecharacteristics variation of the photosensitive seals and is divided intothree sections. Section Ⅰ describes the production method ofphotosensitive seals. Section Ⅱ outlines the basic characteristics ofphotosensitive seals. Section Ⅲ lists several most importantinfluencing factors and outlines the observation of the variation ofcharacteristics, especially the influence of stamp pad ink.The last chapter describes the meaning of this research to seals andstamps identification works, is divided into four sections. Section Ⅰdescribes the basic test methods during the identification works. SectionⅡ describes the application of this research in identification works tosolve the identify of seals and stamps. Section Ⅲ describes theapplication of this research in identification works to judge the printtime of seals and stamps. Section Ⅳ lists two cases, which use theresearch of this paper to analyze the identify and print time of sealsand stamps.