| 摘要 |
<p>PROBLEM TO BE SOLVED: To obtain a stable image superior in offset resistance and low temperature fixability and blocking resistance and wide in fixing temperature range in the low temperature fixation by specifying time length from the time of applying strain to the time when relaxation elasticity modulus becomes a specified value. SOLUTION: This toner resin composition has the absolute value of a complex elasticity modulus|G*|of <=50,000Pa measured under the conditions of temperature of 130 deg.C and angular frequency of 100rad/sec and amplitude of strain of 3%, and a compression maximum stress ofσmax of 20-50MPa measured under the conditions of temperature of 23 deg.C and compression velocity of 10mm/ min, and further, the relaxation elasticity modulus at 130 deg.C and an initial strain of 450% is measured and a time length T1 is <=1sec, where G1 is the relaxation elasticity modulus later by 0.02sec from the time of applying the strain and T1 is time length from the time of applying the strain to the time when the relaxation elasticity modulus becomes [(G1 -G2 )/100]+G2 , thus permitting the low temperature fixability to be especially improved and to obtain a stable image even in the case of copying by using a high-speed type or a small type of an electrophotographic copying machine.</p> |
