JPH0329872U

JPH0329872U -

Info

Publication number: JPH0329872U
Application number: JP7299989U
Authority: JP
Priority date: 1989-03-28
Filing date: 1989-06-23
Publication date: 1991-03-25

Description

[Brief explanation of drawings]

第１図は本考案の第１考案の構成及び作用を説
明する説明図、第２図ａ，ｂはその実施例の構成
を示す断面図及び側面図、第３図は本考案の第２
考案の構成及び作用を説明する説明図、第４図は
その実施例の構成を示す斜視図、第５図はその分
解斜視図、第６図ａ，ｂは他の実施例の側面図及
び正面図、第７図ａ，ｂはさらに他の実施例の側
面図及び正面図、第８図は本考案が適用されるロ
ーラ定着装置の一例の構成を示す断面図、第９図
は従来提案された入口ガイド板先端位置決め装置
の一例の構成及び作用を説明する説明図である。１……定着ローラ、３……加圧ローラ、４……
転写紙、５……入口ガイド板（入口ガイド部材）
、５ａ……取付部、５ｂ……長孔、６……入口ガ
イド部材先端、入口ガイド部材側位置決め部、８
……定着ローラ軸受、１０……ねじ、１２……定
着ローラ軸支孔、１３……位置決め孔、１４……
位置決め部、１９，２１……ねじ、２２……ばね
。 FIG. 1 is an explanatory diagram explaining the structure and operation of the first device of the present invention, FIGS. 2a and b are sectional views and side views showing the structure of the embodiment, and FIG.
An explanatory diagram explaining the structure and operation of the device, FIG. 4 is a perspective view showing the structure of an embodiment thereof, FIG. 5 is an exploded perspective view thereof, and FIGS. 6 a and b are side views and front views of other embodiments. 7a and 7b are a side view and a front view of another embodiment, FIG. 8 is a sectional view showing the configuration of an example of a roller fixing device to which the present invention is applied, and FIG. 9 is a conventionally proposed FIG. 2 is an explanatory diagram illustrating the configuration and operation of an example of an entrance guide plate tip positioning device. 1... Fixing roller, 3... Pressure roller, 4...
Transfer paper, 5...Entrance guide plate (entrance guide member)
, 5a... Attachment part, 5b... Long hole, 6... Entrance guide member tip, entrance guide member side positioning part, 8
... Fixing roller bearing, 10 ... Screw, 12 ... Fixing roller shaft support hole, 13 ... Positioning hole, 14 ...
Positioning part, 19, 21...screw, 22...spring.

Claims

[Claims for Utility Model Registration] (1) A fixing roller and a pressure roller in pressure contact with the fixing roller are pivotally supported on a side plate of the fixing device, and the image surface of the transfer paper carrying the unfixed toner image is brought into contact with the fixing roller. Positioning of an entrance guide member of a roller fixing device of an electrostatic recording apparatus having an entrance guide member for guiding the transfer paper to the nip portions of both rollers with its non-image surface in sliding contact so as to transport the transfer paper through the nip portions of both rollers. In the apparatus, the entrance guide member is supported by the side plate of the fixing device so as to be able to move in parallel in a direction parallel to a straight line connecting the axes of both the rollers, and the nip-side tip of the entrance guide member is coaxial with the fixing roller. An entrance guide member positioning device for a fixing device, characterized in that it is positioned in contact with the outer peripheral surface of a certain bearing or collar. (2) A fixing roller and a pressure roller that is in pressure contact with the fixing roller are pivotally supported on the side plate of the fixing device, and the image surface of the transfer paper carrying the unfixed toner image is brought into contact with the fixing roller to close the nip between the two rollers. In an entrance guide member positioning device for a roller fixing device of an electrostatic recording device, the entrance guide member positioning device for a roller fixing device of an electrostatic recording device has an entrance guide member that guides the transfer paper to the nip portion of both rollers with its non-image surface in sliding contact with each other for conveyance. It is supported by the side plate of the fixing device so as to be movable in parallel to the straight line connecting the axes of the two rollers and in the direction perpendicular thereto. The corner portions where these intersect are defined as entrance guide member side positioning portions, and the mutually intersecting surfaces of the entrance guide member side positioning portions are in contact with each other at a predetermined position relative to the center of the fixing roller support hole on both side plates of the fixing device. a positioning part configured as a corner part consisting of two surfaces, and a hole through which the vicinity of the inlet guide member can be gently penetrated;
An entrance guide member positioning device for a fixing device, comprising means for holding the entrance guide member side positioning portion in contact with the positioning portion of the hole.