Riso Print Gocco B6 Hi-Mesh Master film sheets - 5 pcs & Lamp Bulbs -10 pcs !

Description

Print Gocco is a simple home-use stencil printer formerly marketed by Riso Kagaku Kogyo, which was sold from 1977 to 2008.
Outline
RISO Gocco was developed by Riso Kagaku Kogyo, a manufacturer of mimeograph materials and equipment, together with RISOGRAPH (launched in 1980), a digital duplicator for office use, to overcome a business crisis caused by failure of a large capital investment in RISO Master, a paper used for RISO FAX, a thermal duplicator for mimeographs [1]. [1].
The two components, "plate" (base paper) and "plate holding material" (screen), which are separated in mimeograph, are integrated as a "master" similar to mesh in silk screen printing, and it uses a different printing technique from mimeograph.
Thermal perforation plate making is employed, in which strong infrared rays are applied to the carbon contained in pencils, drawing inks, etc., to generate heat in the area where the carbon is located, thereby dissolving the film. The process of washing off uncured sensitized material, which is generally done in conventional silk screen printing, is eliminated. The RISO Dry Thermal Plate Making System is an automated thermal plate making system using a thermal head, and is used in RISOGRAPH and the company's silk screen plate making machines.
The company supplied masters, ink, and other consumables through retailers nationwide, but demand for printing New Year's postcards declined rapidly due to the spread of personal computers and color printers, as well as the Internet. However, due to a rapid decline in demand caused by a combination of the spread of personal computers and color printers, as well as a decline in demand for New Year's postcard printing due to the spread of the Internet, sales of the machine were discontinued in June 2008. This marked the end of 31 years of sales. Sales of consumables were also discontinued in December 2012[2][3].
Principle
Plate making
The master, which also served as the plate and plate holding material, was made by crimping together a heat-melting film and screen, which was fixed to a cardboard frame covered with a transparent film. Only special products supplied by Riso Kagaku Kogyo could be used.
The main unit, called a "printer," was both a printer and plate maker. The "lamp house," with a master and flash lamp mounted on the flip-up side of the frame, was placed on the side of the printing table, with the base paper written on the paper using ink or other carbon-containing writing tools on the side of the table, and the frame was lowered and pressed down further to press the master onto the base paper. The master is then pressed down further, causing the metal pieces inside the frame to come into contact with each other and an electric current to flow to the lamphouse, causing the flash lamp to emit light. The black writing area of the master absorbs this heat, melting the master film and creating microscopic holes through which the ink can pass.
The flash lamps were manufactured by Matsushita Electric Industrial (later Panasonic Photo Lighting → Panasonic Lighting Devices) and Toshiba (later Toshiba Lighting Technologies), and only the Matsushita lamps were used at the end of the period. The printer was powered by two AA batteries and was equipped with a battery box inside the printer.
Printing
The transparent film cover of the master is lifted up, the master is loaded with special ink, and installed inside the frame side of the printer in the same manner as during plate making.
Unlike the silk screen printing method that uses a squeegee, in principle, there is no significant ink transfer, and therefore, it is possible to place multiple colors of ink on one master at the same time, and by attaching a special sponge sheet with adhesive to the master in advance, ink transfer and color mixing during crimping can be prevented This was possible [4].
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