Toner image fixing device

• US 4,806,966 A
• Filed: 11/25/1987
• Issued: 02/21/1989
• Est. Priority Date: 11/29/1986
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation)
• Inventors: Suga, Takayuki
• Primary Examiner(s): MOSES, RICHARD L
• Application Number:
  US07/125,265
• Time in Patent Office: 454 Days
• Field of Search: 355/3 SH, 355/3 FU, 271/307, 271/311, 271/312, 271/313, 271/900
• US Class Current: 399/323
• CPC Class Codes: G03G 15/2028 with means for handling the copy material in the fixing nip, e.g. introduction guides, stripping means

Abstract

A toner image device includes a separating member for separating an image forming medium carrying a toner image to be fixed from fixing rollers. The separating member has an end in contact with the fixing rollers. A groove is formed at an intermediate portion of the separating member. A housing for the separating member has an engaging portion to engage with the groove so as to rotatably support the separating member around the engaging portion. A tension spring is connected to the separating member and exerts a force in a direction such that the separating member is brought into contact with the mixing rollers.

Claims

1. A toner image fixing device comprising:

means for fixing a toner image on an image forming medium;

means for separating the image forming medium from said fixing means, said eparating means having a separating portion which is in contact, with said fixing means, a biasing portion and an engaging portion provided between said separating portion and said biasing portion, said engaging portion having a first contact portion at an outer edge of said separating means;

means, provided in the vicinity of said fixing means, for engaging said engaging portion, said engaging means having a second contact portion at an outer ,edge of said engaging means, said first contact portion, removably resting against said second contact portion; and

means, connected to said biasing portion of said separating means, for exerting a force in a direction so that said separating means touches said fixing means and contact between said first contact portion and said second contact portion causes said engaging means to rotatably support said separating means.

2. The toner image fixing device according to claim 1, wherein said engaging portion comprises an engagement groove which is formed in an edge of said separating means which is opposite to said fixing means, said first contact portion being disposed in said groove.

3. The toner image fixing device according to claim 2, wherein said engaging means comprises a second engagement groove which is formed in an edge of said engaging means which is towards said fixing means, said second contact portion being disposed in said second engagement groove.