The printer can only print, is the basis of office equipment, mainly divided into dot printer, inkjet printer, laser printer, thermal printer. Different printers work differently and print differently: a dot matrix printer prints character graphics through physical contact between the printer and the paper; an inkjet printer prints character graphics by ejecting toner; and the laser printer passes through the toner cartridge. The toner is used to print the character pattern; the thermal printer selectively heats the determined position of the thermal paper, thereby producing a corresponding pattern.
A copier is literally a printer with a copy function. Copiers are able to obtain copies that are doubled, enlarged or reduced directly from originals written, drawn or printed without intermediate means such as other plates. Copiers can be divided into photochemical copying, thermal copying and xerographic copying according to the working principle.
(1) Photochemical copying is divided into direct photocopying, blueprint copying, diazo copying, dye transfer and diffusion transfer. The direct photocopying method uses high contrast photographic paper instead of photographic film to photograph the original, which can be increased or shrunk. The blueprint method is the original of the copy paper coated with iron salt and a single translucent material. After exposure and development, a blue-and-white image is formed; the diazo method is similar to the blueprint method. The surface of the copy paper is coated with a diazo compound , and after exposure, it is developed in liquid or gaseous ammonia to produce a dark-toned image; other photochemistry The principle of copying is similar.
(2) Thermal copying is a copy paper coated with a heat-sensitive material on the surface , and attached to a single original to receive infrared rays or a heat source. The heat absorbed by the image portion is transferred to the surface of the copy paper, and the heat-sensitive material is darkened to form a copy. This method of copying is now mainly used for fax machines to receive faxes.
(3) Electrostatic copying is currently the most widely used copying technology. It uses selenium, zinc oxide, cadmium sulfide and organic photoconductors as photosensitive materials. It is charged in the dark to accept the exposure of the original image to form an electrostatic latent image. It is formed by processes such as development, transfer and fixing. Electrostatic copying machine is a collection of electrostatic imaging technology. Optical technology. Office equipment integrating electronic technology and mechanical technology.
Based on the printer, the multifunction is the all-in-one. Adding a scanner to the printer is a print and copy machine. Adding a fax function is to print the copy fax machine. No matter which printer you choose, the most important thing is that the channel must be regular. Only the right channel can buy the product with guaranteed quality. For office equipment, the company's Klip Mall is the best choice. To ensure direct supply from the factory, it is very advantageous in terms of price and quality.
Improving access and enhancing the dignity of individual or patient care, medical beds are designed to accommodate a broad range of health needs and care requirements. Available in a range of widths, heights, and motor capabilities, Jia Mei can provide medical beds that help to prevent injury to carers and the people they`re looking after.
Many electric medical beds now come with built in side rails to prevent the patient from falling out of the bed. This ensures that the electric medical bed adheres to side rail regulations that need to be followed with certain patients, as well as preventing accidental injuries.
We sell a range of beds to help elderly and disabled people stay comfortable when spending prolonged periods in bed. Our beds can be used at home or in community settings. The beds are designed to suit people of different heights and weight and including children`s sizes.
Hospital Care Bed,Electric Medical Bed,Homecare Hi Lo Beds,Multifunction Hospital Care Bed
Jiangmen Jia Mei Medical Products Co.,Ltd. , https://www.jmjiameimedical.com