Patent ID: 11927900
Assignee: RICOH COMPANY, LTD.
Field: Optics (Instruments)
Classification: CPC G | IPC G

Claim 11:
12. The fixing device according to claim 1,
wherein the transmission includes:
a first support coupled to the pressure plate and the entrance guide; and
a second support coupled to the first support and the exit guide, the second support including a first portion extending from a coupling portion coupling to the first support, a second portion extending from a coupling portion coupling to the exit guide, and a bending point at which the first portion and the second portion intersect each other, and
wherein an angle θ between the pressure plate and a straight line connecting a center of the fixing rotator and a center of the pressure rotator is in a following range,

tan−1[(a−d)/b]≤θ≤tan−1[(a−e)/(f−c)].

where parameters a, b, c, d, e, and f are defined as follows:
a is a distance from the fulcrum of the pressure plate that receives the pressing force from the pressing force adjuster to a position at which the pressure plate that receives the pressing force from the pressing force adjuster is coupled to the first support;
b is a distance from the position at which the pressure plate that receives the pressing force from the pressing force adjuster is coupled to the first support to a position at which the first support is coupled to the exit guide;
c is a distance from the position at which the pressure plate that receives the pressing force from the pressing force adjuster is coupled to the first support to a position at which the first support is coupled to the second support;
d is a distance from the position at which the first support is coupled to the exit guide to a position of a tip of the exit guide;
e is a distance from the position at which the first support is coupled to the second support to the bending point; and
f is a distance from the bending point to a tip of the entrance guide.