Disclosed are a novel crystal form of the fluoran compound represented by formula (I) as characterised by specific X-ray powder diffraction pattern and melting range; process for the preparation of said novel crystal form and recording materials comprising the said crystal form.
本发明公开了一种由式(I)代表的
氟化合物的新型晶型,其特征在于特定的 X 射线粉末衍射图样和熔融范围;制备所述新型晶型的工艺以及包含所述晶型的记录材料。