JPS6382270U

JPS6382270U -

Info

Publication number: JPS6382270U
Application number: JP17706786U
Authority: JP
Priority date: 1986-11-18
Filing date: 1986-11-18
Publication date: 1988-05-30
Also published as: JPH0428107Y2

Description

[Brief explanation of the drawing]

第１図は本考案の一実施例としての定着装置に
おける圧接状態を示す断面図、第２図は上記定着
装置の外観を示す斜視図、第３図は上記定着装置
におけるロール対の近接状態を示す断面図、第４
図は上記定着装置における最大離隔状態を示す模
式的側面図、第５図は上記定着装置が適用された
光書込みプリンタの概略構成を示す模式図である
。１７……定着装置、２３……加熱ロール、２４
……圧接ロール、２７，２７′……コイルバネ、
２８……清掃フエルト、３３……定着部カバー、
３３ｃ……カム面、３５，４０……板バネ、３６
……作動杆、３７，３７′……レバー部材、３７
ａ……カム受面、４１……フオトインタラプタ、
４２……アクチユエータ、Ｓ……排紙検知スイツ
チ、Ｄ……シエルオープンライン。 FIG. 1 is a cross-sectional view showing a press-contact state in a fixing device as an embodiment of the present invention, FIG. 2 is a perspective view showing the external appearance of the fixing device, and FIG. 3 is a close-up state of a pair of rolls in the fixing device. Sectional view shown, No. 4
The figure is a schematic side view showing the maximum separation state of the fixing device, and FIG. 5 is a schematic diagram showing the schematic configuration of an optical writing printer to which the fixing device is applied. 17... Fixing device, 23... Heating roll, 24
... Pressure roll, 27, 27' ... Coil spring,
28...Cleaning felt, 33...Fusing section cover,
33c...Cam surface, 35, 40...Plate spring, 36
...Operating rod, 37, 37'...Lever member, 37
a...Cam receiving surface, 41...Photo interrupter,
42... Actuator, S... Paper discharge detection switch, D... Ciel open line.

Claims

[Scope of utility model registration request]

In a fixing device that is composed of at least a pair of rolls that can be in rolling contact with each other and that conveys a transfer paper carrying a toner image while pinching it in the rolling contact portion and fixes the toner image, the fixing device moves from a first position to a second position and then moves to a second position. an actuating member that is supported for reciprocating rotation between three positions; and a first separation position where the pair of rolls are separated from a pressing position where both rolls are brought into pressure contact with each other according to the reciprocating rotational movement of the actuating member. an interlocking contact/separation mechanism for freely moving the two to a second separation position where the two are separated by at least the first separation position or more;
and a holding mechanism that holds the pair of rolls at the first separation, pressure contact, and second separation positions, respectively, when the actuating member is in the first, second, and third positions. Features a fixing device.