JPH0347571U

JPH0347571U -

Info

Publication number: JPH0347571U
Application number: JP10844189U
Authority: JP
Priority date: 1989-09-18
Filing date: 1989-09-18
Publication date: 1991-05-02

Description

[Brief explanation of the drawing]

第１図は定着ローラと本考案の分離爪との関連
を示す一実施例の斜視図、第２図は定着ローラと
本考案の分離爪との関連を示す他の実施例の斜視
図、第３図ａ，ｂは大サイズの転写紙位置に配置
される分離爪の側面図及び正面図、第４図ａ，ｂ
は大サイズの転写紙位置に配置される他の分離爪
の側面図及び正面図、第５図ａ，ｂは大サイズの
転写紙位置に配置される更に他の分離爪の側面図
及び正面図、第６図は本考案を適用することがで
きる定着装置の概略断面図、第７図は定着ローラ
と従来の分離爪との関連を示す斜視図、第８図は
転写紙のセンターを基準に通紙される形式におい
て従来の分離爪により発生したオフセツト防止液
跡を示す転写紙の平面図、第９図は転写紙の片側
を基準に通紙される形式において従来の分離爪に
より発生したオフセツト防止液跡を示す転写紙の
平面図である。１……定着ローラ、２……加圧ローラ、５……
分離爪装置、５Ａ……小サイズ転写紙に対応する
分離爪、５Ｂ……大サイズ転写紙に対応する分離
爪、１１……分離爪５Ｂの当接部５_１２に形成さ
れる溝、１２……分離爪５Ｂの当接部５_１２に形
成される小孔。 FIG. 1 is a perspective view of one embodiment showing the relationship between the fixing roller and the separating claw of the present invention, and FIG. 2 is a perspective view of another embodiment showing the relationship between the fixing roller and the separating claw of the present invention. Figure 3 a, b is a side view and front view of the separation claw placed at the large size transfer paper position, Figure 4 a, b
5A and 5B are a side view and a front view of another separating claw arranged at the large-sized transfer paper position, and FIGS. 5a and 5b are side and front views of still another separating claw arranged at the large-sized transfer paper position , FIG. 6 is a schematic sectional view of a fixing device to which the present invention can be applied, FIG. 7 is a perspective view showing the relationship between a fixing roller and a conventional separation claw, and FIG. 8 is a diagram based on the center of transfer paper. A plan view of transfer paper showing the traces of anti-offset liquid caused by a conventional separation claw in a paper-threading format, and Figure 9 shows an offset caused by a conventional separation claw in a paper-threading format based on one side of the transfer paper. FIG. 3 is a plan view of the transfer paper showing traces of the prevention liquid. 1... Fixing roller, 2... Pressure roller, 5...
Separation claw device, 5A...Separation claw corresponding to small size transfer paper, 5B...Separation claw corresponding to large size transfer paper, 11...Groove formed in contact portion 5 _{to 12} of separation claw 5B, 12... ...A small hole formed in the abutting portion ₅₁₂ of the separation claw 5B.

Claims

[Scope of utility model registration request]

A separation claw device in a fixing device, comprising a pressure roller, a pressure roller, and a separation claw that separates paper wrapped around the fixing roller. A plurality of separation claws are arranged in correspondence with the axial direction of the fixing roller, and the plurality of separation claws have different oil pool removal capabilities at the leading end corresponding to the respective positions of small-sized paper and large-sized paper. A separating claw device in a fixing device, characterized in that the oil reservoir removal capacity of the tip portion is configured to be larger at a position for large size paper than at a position for small size paper.