DRYNESS SUPPRESSING DEVICE OF ROLLER SURFACE

• Main Author: HITACHI YOSHITAKA
• Format: Patent
• Language: English; Japanese
• Published: 19.07.2018
• Subjects: AIR-CONDITIONING, AIR-HUMIDIFICATION, VENTILATION, USE OF AIRCURRENTS FOR SCREENING; BLASTING; COLOUR PRINTING; HEATING; LIGHTING; LINING MACHINES; MECHANICAL ENGINEERING; PERFORMING OPERATIONS; PRINTING; PRINTING MACHINES OR PRESSES; PRINTING, DUPLICATING, MARKING, OR COPYING PROCESSES; RANGES; STAMPS; TRANSPORTING; TYPEWRITERS; VENTILATING; WEAPONS

PROBLEM TO BE SOLVED: To provide a dryness suppressing device capable of effectively suppressing dryness of a roller surface by a printer or the like using aqueous ink.SOLUTION: A dryness suppressing device includes a box-like humidification duct which has an opening facing a surface of a roller in a longitudinal direction and an introduction port of humidification gas, and a humidification gas supply section supplying the humidification gas into the introduction port, where a temperature of the humidification gas in the humidification duct is a temperature higher than a temperature of the surface of the rotating roller and a relative humidity is 70% or higher.SELECTED DRAWING: Figure 1 【課題】水性インキを使用する印刷機などで、ローラ表面の乾燥を効果的に抑制することができる乾燥抑制装置を提供する。【解決手段】本発明の乾燥抑制装置は、長手方向に沿って、前記ローラの表面に対向する開口を備え、かつ加湿気体の導入口を備えた箱状の加湿ダクトと、前記導入口に加湿気体を供給する加湿気体供給部と、から構成され、前記加湿ダクト内の前記加湿気体の温度は、回転している前記ローラの表面の温度よりも高い温度でかつ相対湿度が７０％よりも高いことを備えている。【選択図】 図１