JPS63135365U

JPS63135365U -

Info

Publication number: JPS63135365U
Application number: JP2685187U
Authority: JP
Priority date: 1987-02-25
Filing date: 1987-02-25
Publication date: 1988-09-06
Anticipated expiration: 2002-02-25
Also published as: JPH0727470Y2

Description

[Brief explanation of drawings]

第１図は本考案に従う熱ローラ定着器を具備さ
せたレーザビームプリンタの一例の内部構成を示
す縦断面図、第２図は定着器と第１排紙ローラ対
部分の斜面図、第３図は定着ローラの一端側の一
部切欠き拡大斜面図、第４図は定着ローラの端面
に直接にアース用導電性部材を接触させた例の部
分斜面図、第５図は定着ローラの外周面にアース
用導電性部材を接触させた例の同上図。１３は熱ローラ定着器、１３ａは定着ローラ、
１３ｂは加圧ローラ、１３ｃは電気ヒータ、１３
ｄは定着ローラの端面、１３ｅはその端面に一体
に設けた導電性・耐摩耗性の摺動板、５２はアー
ス用の導電性部材（摺動接点部材）。 FIG. 1 is a vertical sectional view showing the internal structure of an example of a laser beam printer equipped with a heat roller fixing device according to the present invention, FIG. 2 is a perspective view of the fixing device and the first paper ejection roller pair, and FIG. 3 4 is a partially cutaway enlarged slope view of one end of the fixing roller, FIG. 4 is a partial slope view of an example in which a grounding conductive member is brought into direct contact with the end surface of the fixing roller, and FIG. 5 is an outer peripheral surface of the fixing roller. The same figure as the above of the example which brought the electrically conductive member for earthing into contact with. 13 is a heat roller fixing device, 13a is a fixing roller,
13b is a pressure roller, 13c is an electric heater, 13
d is an end surface of the fixing roller, 13e is a conductive and wear-resistant sliding plate integrally provided on the end surface, and 52 is a conductive member for grounding (sliding contact member).

Claims

[Claims for Utility Model Registration] (1) A conductive member is kept in contact with the end surface of the heated and rotating fixing roller, and the fixing roller is grounded through the conductive member. Heat roller fuser. (2) A sliding plate made of a conductive material is attached to the end surface of the fixing roller, and the conductive member is kept in contact with the sliding plate surface, and the fixing roller is grounded.
A heat roller fixing device according to claim 1 of the utility model registration claim. (3) The heat roller fixing device according to claim 2, wherein the contact point of the conductive member with respect to the sliding plate surface is set as close as possible to the center of rotation of the fixing roller.