JPS6019050U - electrostatic copying machine - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

FIG. 1 is a simplified sectional view showing a specific example of an electrostatic copying machine constructed according to the present invention. FIG. 2 is a front view showing the fixing device and its vicinity in the electrostatic copying machine shown in FIG. 3 is a partially cutaway perspective view showing the fixing device and its vicinity in the electrostatic copying machine of FIG. 1; FIG. FIG. 4 is a diagram showing a state in which the upper support member of the fixing device of the electrostatic copying machine shown in FIG. 1 is held in a non-operating position. FIG. 5 is a diagram showing a state in which the upper support member of the fixing device of the electrostatic copying machine shown in FIG. 1 is held in an open position. 2...Housing, 4...Lower support frame, 6...
Upper support frame, 110...Fixing device, 114...Upper roller, 116...Lower roller, 126...Upper structure, 128...Lower structure, 130...Upper support Members, 156... lower support member, 172... elastic biasing means, 192... positioning is protrusion.

Claims (1)

[Claims for Utility Model Registration] 1. A utility model having a lower support frame, an upper support which is rotatably mounted between an open position and a closed position, and a lower roller and an upper roller that cooperate with each other, and An electrostatic copying machine comprising a fixing device attached to the lower support frame, the fixing device comprising: a lower structure including the lower roller and a lower support member to which the lower roller is rotatably attached; an upper structure including the upper roller and an upper support member rotatably attached to the upper roller; the upper support member of the upper structure is rotatably attached; and the lower support frame includes: , an elastic biasing means for abutting the upper structure and elastically biasing the upper structure upwardly is provided on the upper support frame; Means is provided for forcing the upper structure into abutting position and pivoting the upper structure downwardly against the action of the elastic biasing means to bring the upper roller into a working position in which it is pressed against the lower roller. and when the upper support frame is pivoted from the closed position to the open position, the force positioning means moves away from the upper structure and the upper structure is moved into position by the action of the resilient biasing means. An electrostatic copying machine characterized in that it can be pivoted upward from a working position to a non-working position. 2. The electrostatic copying machine according to claim 1, wherein the forced positioning means provided on the upper support frame abuts against the upper support member. 3. The upper support member is mounted so as to be pivotable about a pivot axis located at an upstream end when viewed in the moving direction of the member to be fixed passing through the fixing device, Claim 1 of Utility Model Registration The electrostatic copying machine according to item 1 or 2. 4. The lower support frame is provided with a locking means that the upper support member comes into contact with when the upper structure is manually rotated further upward from the non-operating position to the open position, and the upper structure An electrostatic copying machine according to any one of claims 1 to 3, which is held in the open position by its own weight. 5. The lower support member is rotatably attached to the lower support, and the elastic biasing means is interposed between the lower support frame and the lower support member, and the elastic biasing means The electrostatic copying machine according to any one of claims 1 to 4, which acts on the upper roller through side rollers to elastically bias the upper structure. 6. A lower guide plate is disposed downstream of the upper roller and the lower roller when viewed in the moving direction of the fixing target member, and the lower guide plate has a rotating shaft located at its downstream end. An electrostatic copying machine according to any one of claims 1 to 5, which is mounted on the lower support frame so as to be pivotable about an axis from a predetermined operating position. 7 The lower support frame is provided with a locking piece that the lower guide plate comes into contact with when the lower guide plate reaches the predetermined position, and the lower guide plate returns to the open position due to its own weight. An electrostatic copying machine according to claim 6, which is registered as a utility model. 8. A lower guide plate is further provided upstream of the upper roller and the lower roller when viewed in the moving direction of the fixing target member, and the lower guide plate is located on the upstream side of the upper roller and the lower roller. 8. The electrostatic copying machine according to claim 1, wherein the electrostatic copying machine is mounted on the lower support frame so as to be pivotable about a pivot axis. 9 The lower guide plate is provided with a contact piece and an elastic piece, and when the upper structure is positioned at the operating position, the upper structure comes into contact with the corresponding contact piece, and the elastic deflection of the elastic piece When the lower guide plate is rotated against the action and placed in the predetermined working position, and the upper structure is placed in the non-working position, the upper structure is separated from the contact piece and the elastic piece is moved. 9. The electrostatic copying machine according to claim 8, wherein the lower guide plate is rotated and held in a predetermined non-operating position by an elastic biasing action.