JPS62109179U

JPS62109179U -

Info

Publication number: JPS62109179U
Application number: JP20132885U
Authority: JP
Priority date: 1985-12-26
Filing date: 1985-12-26
Publication date: 1987-07-11

Description

[Brief explanation of the drawing]

第１図は本考案の実施例を示す概略図、第２図
は本考案実施例の要部を示す斜視図、第３，４図
は第２図中―、―矢視図、第５，６，７
図は本考案実施例の要部の作用を示す側面図、第
８図は定着装置の従来例を示す概略図である。１…加熱ローラ、２…加圧ローラ、１１…カバ
ー、１１ａ…ガイド板、１２…保持ブラケツト、
１２ｂ…衝止片、１３…解除レバー、１３ａ…押
圧腕、１３ｂ…作動腕、１４…分離ブラケツト、
１４ａ…係止片、１５…分離爪、１６…分離爪用
支軸、Ｄ…分離機構、Ｆ…定着部、Ｍｇ…磁石。 Fig. 1 is a schematic diagram showing an embodiment of the present invention, Fig. 2 is a perspective view showing the main parts of the embodiment of the invention, Figs. 6,7
The figure is a side view showing the operation of the main parts of the embodiment of the present invention, and FIG. 8 is a schematic diagram showing a conventional example of a fixing device. DESCRIPTION OF SYMBOLS 1... Heating roller, 2... Pressure roller, 11... Cover, 11a... Guide plate, 12... Holding bracket,
12b...Blocking piece, 13...Release lever, 13a...Press arm, 13b...Operating arm, 14...Separation bracket,
14a... Locking piece, 15... Separation claw, 16... Separation claw spindle, D... Separation mechanism, F... Fixing section, Mg... Magnet.

Claims

[Scope of Claim for Utility Model Registration] 1. A heating roller, and a pressure roller that is in contact with the circumferential surface of the heating roller and rotates in a driven manner, and that cooperates with the heating roller to sandwich and convey a transfer material carrying an unfixed image. an openable/closable cover that is located above the pressure roller, forms a canopy that suppresses heat dissipation from the heating roller in the closed position, and has a guide section on the opening/closing end side that guides the transfer material in the discharge direction. and a separation mechanism that is located on the transfer material discharge side of each pair of rollers and separates the transfer material from the heating roller, the separation mechanism being fixedly disposed near both ends of the roller in the axial direction. a holding bracket having a magnetic material on the conveyance path side of the transfer material discharged from the pair of rollers; a pressing arm supported swingably with respect to the holding bracket and extending toward the guide portion of the cover; A bell crank portion is formed in which the pressing arm and the operating arm extending upward are formed on the same plane, and the pressing arm is given a habit of pressing against the guide portion of the cover in the closed position during normal life. a locking piece that is swingably supported relative to the body near both ends of the roller in the axial direction and that faces the magnetic body of the holding bracket at the swinging end; The locking piece is attracted to and held by the magnetic body, so that the swinging end is connected to the heating roller for ejecting the transfer material. A separation bracket protrudes from the side, and is pivotably supported by the above separation bracket,
A fixing device comprising a plurality of separation claws arranged in parallel in the axial direction of the support shaft, the fixing device being rotatably biased so as to bring its tip into contact with the circumferential surface of the heating roller. 2. The magnetic force of the magnetic material of the holding bracket is set to be greater than the pressing force of the transfer material against the separation claw when it advances, which is obtained when the transfer material enters between the tip of the separation claw and the surface of the heating roller that this tip is in contact with. The fixing device according to claim 1, wherein the fixing device has a weak setting.