Charging Characteristics of Ferroelectric Organic Films and Their Application to Image Recording

铁电有机薄膜的充电特性及其在图像记录中的应用

• 批准号: 05650005
• 负责人: KOKADO Hiroshi
• 金额: $ 1.34万
• 依托单位: Chiba University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1994
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05650005/
• 关键词: Ferroelectrics; Image Recording; Pyroelectricity; Polyvinylidenefluoride; 画像電体

(1) Copolymer of vinylidene fluoride and tetrafluoroethylene (4 : 1) can be solution coated into films. If have been poled, imagewise heating by a flash gives these films a contrast potential for the toner development. A novel imaging process is proposed based on this.(2) Investigation of corona charging dynamics of poled and unpoled films revealed that the thermal depolarization by heating occurs no more than 20%. The main part of potential contrast comes from the pyroelectricity. A balance fields of the dipole and the surface charges is lost by the pyroelectricity and subsequently charges decay.(3) A satisfactory toner image was transferred on paper, with a stroboflash as the heat source, with the energy required for unity image density of about 50mJ/cm^2.(4) Several light absorbers were incorporated into the ferroelectric layr and examined. Ionic substances greatly depressed the ferroelectric properties. The bilayr structure was found to be favored than the pigment dispersed monolayr structure.(5) A lack of mechanical strength imposes a problem for application of the pyroelectric imaging. Some reforming resins were tested. A small amount of such reformers improved the image quality, with a minimal influence on the ferroelectricity.

(1)偏氟乙烯与四氟乙烯（4：1）的共聚物可以溶液涂布成膜。如果已经被极化，则通过闪光以成像方式加热给予这些胶片用于调色剂显影的对比电位。在此基础上提出了一种新的成像方法。(2)极化和未极化的薄膜的电晕充电动力学的调查表明，通过加热的热去极化发生不超过20%。热释电性是电位衬度的主要来源。偶极和表面电荷的平衡场由于热电性而失去，随后电荷衰减。(3)用闪光灯作为热源，将令人满意的墨粉图像转印到纸上，其中统一图像密度所需的能量约为50 mJ/cm ^2。(4)几种光吸收剂被纳入铁电层和检查。离子物质大大降低了铁电性能。发现双层结构比颜料分散的单层结构更有利。(5)机械强度的缺乏给热电成像的应用带来了问题。对一些重整树脂进行了试验。少量的此类重整剂可以提高图像质量，对铁电性的影响很小。

项目成果

M.Kikuchi,T.Yoshimura,K.Hoshino,H.Kokada: "The Mechanism of Thermo-Induced Electrostatic Image Formation in Poled Ferroelectric Polymer Films" Japanese Journal of Applied Physics. 33. 40033-4006 (1994)

M.Kikuchi、T.Yoshimura、K.Hoshino、H.Kokada：“极化铁电聚合物薄膜中热致静电图像形成的机制”日本应用物理学杂志。

M. Kikuchi, T. Yoshimura, K. Hoshino, H. Kokado: "The Mechanism of Thermo-Induced Electrostatic Image Formation in Poled Ferroelectric Polymer Films" Japanese Journal of Applied Physics. 33. 4003-4006 (1994)

M. Kikuchi、T. Yoshimura、K. Hoshino、H. Kokado：“极化铁电聚合物薄膜中热致静电图像形成的机制”日本应用物理学杂志。

M.KIKUCHI,T.YOSHIMURA,K.HOSHINO and H.KOKADO: ""The Mechanism of Thermo-Induced Electrostatic Image Formation in Poled Ferroelectric Polymer Films"" Japanese Journal of Applied Physics. 33, No.7A. 4003-4006 (1994)

M.KIKUCHI、T.YOSHIMURA、K.HOSHINO 和 H.KOKADO：“极化铁电聚合物薄膜中热致静电图像形成的机制”，日本应用物理学杂志。