器材与药品黑白照片放大的必用器材如照片1、放大纸如表1所示。目前,印相纸大多采用在纸基上涂一层聚乙烯的 RC 相纸。也有用于人像印放的暖调(画面略呈淡茶色)钡地相纸。其中又分为中间调、硬调和超硬调的2号至4号相纸,尺寸从6寸到成卷的都有。 Equipment and medicines Black and white photos necessary equipment to enlarge such as photos 1, enlarged paper as shown in Table 1. At present, most of the photographic paper is coated with a layer of polyethylene RC paper on paper. Also used for portrait printed warm (picture slightly pale brown) barium paper. Which is divided into the mid-tune, hard and hard tuning of No. 2 to 4 photo paper, size from 6 inches to have a roll.