Comparative Study on the Characteristics of Electronic Printed Documents Under Different Computer Software Conditions and Printing Modes
With the continuous progress of science and technology,the production of electronic printed documents has become very convenient.Using a series of applications software in electronic equipment such as computers to edit,and then directly printing through printers can realize the production of contract text.However,in the practice of forensic science,cases of criminals forging electronic documents and committing crimes happen from time to time,so it is particularly important to examine and identify electronic printed documents.In the process of making electronic printing documents,hardware equipment is the main factor that causes the difference in the characteristics of electronic printing documents.Meanwhile,the influence of software system cannot be ignored.To provide some reference for the inspection and appraisal work,this paper discussed the differences and similarities between the characteristics of electronic printing documents by studying some commonly used computer software such as document editing software,font library and print driver,as well as printing parameter(printing mode).In this paper,the commonly used text samples,formats and images in contract documents were collected,and common electronic contract samples were made.In the experiment,the printing hardware was kept unchanged,and only the variables such as software were studied.Then,the printed documents were observed through a microscope and a magnifying glass,and the software such as Photoshop was used for auxiliary detection,so as to analyze the morphological characteristics of word structure,the proportional relationship of word collocation,the position relationship of stroke intersection,the ink dots shape and image dots and other morphological characteristics,and summarized the printing feature law.These characteristics can provide a basis for determining the editing mode and printing conditions of document material evidence,and provide a new idea for printing document inspection.