An overview of impact printing
This paper gives an overview of impact printing and reviews some of the more recent advances made in this printing technology. Matrix and fully-formed-character impact-printing technologies are discussed for both serial printers and line printers. The critical electromechanical subassemblies that are described are the hammer unit, the paper-handling system, the inking system, and the type-element system. The mathematics describing printer performance and the operation of some of the subassemblies are presented. The relative simplicity of the impact printer still allows it to be the most economical form of text printing. Its other advantages are reliability, general insensitivity to environment, and the ability to print on the greatest variety of print media.
Pocket Printer - A Novel Idea and Implement About Printer
Nowadays, normal printers in the market are very big and heavy, which is likely not convenient for personal office and tends to decline the efficiency of our work. To solve this problem, the demand for a mini, smart and wireless printer is rapidly increasing. And our pocket printer, which tends to be small enough to fit into a usual pocket could move itself and print letters wirelessly on any size of paper. This kind of printer could be just as big as a cup, which is very convenient to carry and efficient in printing.
Metallurgical Process Engineering
The "material of choice" - steel.- Uprising of China's steel industry.- Process manufacturing industry and process engineering.- Engineering science in steel manufacturing process.- Analysis and integration of metallurgical manufacturing process.- Multi-dimensional mass flow control for metallurgical manufacturing process.- Time factors in steel manufacturing process.-Operating dynamics in the production process of steel plant.- Structure and mode of steel plant.- Steel plant and environment.