An image-forming member excellent in the developing ability and printing durability can be obtained and images can be formed without being accompanied by any accumulation of scum in a developing bath used, by developing an image-forming material, in particular, a negative-working image-forming material which comprises a substrate provided thereon with an image-recording layer comprising an infrared light absorber, a polymerization initiator, an ethylenically unsaturated bond-containing monomer and a binder polymer, using a developer which comprises at least one carbonate and at least one hydrogen carbonate, and at least one surfactant selected from the group consisting of nonionic aromatic ether type surfactants represented by the following general formula (1): X-Y-O-(A)n-(B)m-H (wherein X represents an aromatic group; Y represents a single bond or an alkylene group having 1 to 10 carbon atoms; A and B represent groups different from one another and each represents either -CH2CH2O- or -CH2CH(CH3)O-; m and n are 0 or an integer ranging from 1 to 100, respectively, provided that n and m cannot simultaneously represent 0 and that when either n or m is 0, n and m cannot represent 1) and anionic surfactants in an amount ranging from 1.0 to 10% by weight; and which has a pH value ranging from 8.5 to 11.5 and an electrical conductivity x falling within the range: 30 < x < 100 mS/cm.
通过显影图像形成材料,特别是底片工作图像形成材料,可以获得显影能力和印刷耐久性优异的图像形成件,并且在显影浴中形成图像时不会伴有任何浮渣的积累,底片工作图像形成材料包括基底和图像记录层,图像记录层包括红外光吸收剂、聚合
引发剂、含
乙烯不饱和键单体和粘合剂聚合物,使用一种显影剂,该显影剂包括至少一种
碳酸盐和至少一种
碳酸氢盐,以及至少一种表面活性剂,该表面活性剂选自由以下通式(1)表示的非离子芳香族
醚类表面活性剂组成的组:X-Y-O-(A)n-(B)m-H(其中 X 代表芳香族基团;Y 代表单键或具有 1 至 10 个碳原子的亚烷基;A 和 B 代表彼此不同的基团,且各自代表-CH2CH2O-或-CH2CH(
CH3)O-;m 和 n 分别为 0 或 1 至 100 的整数,但 n 和 m 不能同时代表 0,且当 n 或 m 为 0 时,n 和 m 不能代表 1)和阴离子表面活性剂,其用量为 1.0至10%(按重量计);pH值为 8.5 至 11.5,电导率 x 在以下范围内:30 < x < 100 mS/cm。