JPH0772815B2 - Toner recovery device for electrophotographic copying machine - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to an apparatus for collecting discharged toner of an electrophotographic copying machine in a toner collecting container.

(Prior Art) In a conventional toner collecting device for an electrophotographic copying machine, a light transmission type or pressure sensitive type toner full detection element is horizontally arranged above a relatively small toner collecting container. Was small and needed frequent replacement.

(Objective) According to the present invention, a relatively large toner collecting container is disposed below the copy paper conveying belt from the transfer unit to the fixing unit, and is swung in the longitudinal direction to effectively store the toner in the toner collecting container. Let
The purpose is to be able to reliably detect full toner.

(Structure) In order to achieve the above object, the present invention provides a toner recovery device for an electrophotographic copying machine, in which a toner recovery container is rocked in the longitudinal direction, in the vicinity of the toner recovery port at one longitudinal end of the toner recovery container. In addition, an inclined surface is formed which is inclined downward at an angle of 10 ° to 30 ° to the outside at right angles to the swing direction, and a toner full detection means is provided on the inclined surface.

Hereinafter, a specific description will be given based on the illustrated embodiment. 1
Is a transport chain belt for transporting copy paper from the transfer unit to the fixing unit, and an idle 3 and a cam gear 4 are interlocked with a drive gear 2 which is rotationally driven by the transport tune belt 1. Reference numeral 5 is a rocking lever that rocks in the direction of arrow A about the intermediate shaft 6. The pin 7 at one end contacts the eccentric cam 8 of the cam gear 4, and the pin 9 at the other end slides in the direction perpendicular to the rocking lever 5. It is adapted to engage with one end of a slide lever 10 which is movably arranged and slide in the direction of arrow B. Reference numeral 11 denotes a relatively large toner recovery container, which has a toner recovery port 11b from the cleaning device formed on the rear side of the upper end of a cylinder 11a protruding from one end in the longitudinal direction.
A toner collecting container 11 in the vicinity is formed with an inclined surface 11c which is inclined downward by about 10 ° to 30 ° toward an outer direction perpendicular to the vibration direction, and a toner full detection element 12 is arranged along the inclined surface 11c.
The toner collection container 11 is pushed inward from the front side of the main body, and the presser cover 13 is rotated to close the toner fullness detecting element.
12 It is designed to cover the upper part. At this time, the tip of the sliding lever 10 is the other end 11 in the longitudinal direction of the toner collecting container 11.
The front end 11e comes into contact with d and is pressed by a spring 14 provided on the back side of the presser cover 13. A plurality of cases are provided on the upper surface of the base 15 of the main body in which the toner collecting container 11 is arranged.
16 is fixed, the roller 17 disposed therein is projected from the groove 16a, and the toner collecting container 11 is placed on the roller 17.
It can slide lightly in the longitudinal direction.

Next, the operation will be described. When the transport chain belt 1 rotates, the drive gear 2, the idle 3, and the cam gear 4 rotate, the swing lever 5 swings around the intermediate shaft 6, and the sliding lever 10 slides back and forth. Therefore, the toner collecting container 11 is swung about 3 to 10 mm in the longitudinal direction by the sliding lever 10 and the spring 14. The toner collecting container 11 is relatively large, and even if the toner collecting container 11 fills the toner container and becomes heavy, the roller 17 causes a slight swing with less resistance. The toner that has entered from the toner recovery port 11b falls in the cylinder 11a and is piled up in a mountain shape below it, but is gradually sent to the back side in the longitudinal direction due to the rocking and gradually jams from the back side, but in the direction perpendicular to that. Since it does not move, it is a cylinder
The toner dropped from 11a is finally filled along the slope 11c on the side of the cylinder 11a. At this time, the toner full detection element 12 arranged along the slope 11c surely detects the full state.

(Effects) According to the present invention, in the toner collecting device of the electrophotographic copying machine in which the toner collecting container is oscillated in the longitudinal direction, the oscillating direction is provided near the toner collecting port at one longitudinal end of the toner collecting container. Since a slanting surface is formed to incline downward by 10 ° to 30 ° in the outward direction at a right angle with respect to it, and the toner full detection means is provided on the slanting surface, it is effective in the toner collecting container by using a relatively large toner collecting container. Toner can be stored, and full toner can be reliably detected.

[Brief description of drawings]

1 is a perspective view of an embodiment of the present invention, FIG. 2 is a front view of the toner recovery container of FIG. 1, FIG. 3 is a sectional view taken along the line III-III of FIG. 2, and FIG. 4 is of FIG. FIG. 5 is an enlarged view of the roller portion, and FIG. 5 is a perspective view when the toner cover is opened from the main body with the pressing cover opened. 1 ... Transport chain belt, 2 ... Drive gear, 3 ... Idle 4 ... Cam gear, 5 ... Swing lever, 6 ... Intermediate shaft 7,9 ... Pin, 8 ... Eccentric cam, 10 ... Sliding lever 11 …… Toner collection container, 11a …… Cylinder, 11b …… Toner collection port 11c …… Slope, 12 …… Toner full detection element 14 …… Spring

Claims (1)

[Claims] 1. A toner recovery device for an electrophotographic copying machine, wherein a toner recovery container is oscillated in a longitudinal direction. A toner recovery device for an electrophotographic copying machine, characterized in that an inclined surface which is inclined downward by 10 ° to 30 ° outwardly is formed, and a toner full detection means is provided on the inclined surface.