JPH0323126U

JPH0323126U -

Info

Publication number: JPH0323126U
Application number: JP8474389U
Authority: JP
Priority date: 1989-07-19
Filing date: 1989-07-19
Publication date: 1991-03-11

Description

[Brief explanation of the drawing]

第１図は本考案の給紙カセツトを適用する画像
形成装置の全体構成説明図、第２図は本考案の給
紙カセツトの一実施例の構成説明図、第３図は側
板間隔調整機構とダイヤルとの連結状態の構成説
明図、第４図はダイヤルの構成説明図、第５図ａ
，ｂはダイヤルをロツクしたりロツク解除する構
成の説明図、第６図は本考案の給紙カセツトの他
の実施例の説明図、第７図は側板間隔調整機構の
要部説明図、第８図は可変側板の具体的構成説明
図、第９図はストツパを係止するための凹部の具
体的配置図、第１０図は従来の給紙カセツトの構
成説明図である。１……給紙カセツト、２……記録紙、３……レ
ジストローラ対、４……感光体、５……帯電チヤ
ージヤ、６……レーザー光学系、７……現像装置
、８……転写チヤージヤ、９……定着装置、１７
……カセツト用カバー、２０……底板、２１……
可変型側板、２２……側板間隔調整ダイヤル、２
３……ダイヤル解除板、２５……カセツトベース
、２６……中間傘歯車、２９……ピニオン、３０
……ラツク、３３……傘歯車、３４……ストツバ
、４０……ストツパ作動片、５０……切欠き、５
４……溝、５５…被ガイド片。 FIG. 1 is an explanatory diagram of the overall configuration of an image forming apparatus to which the paper feed cassette of the present invention is applied, FIG. 2 is an explanatory diagram of the configuration of one embodiment of the paper feed cassette of the present invention, and FIG. Fig. 4 is an explanatory diagram of the configuration of the dial in a connected state, Fig. 5a is an explanatory diagram of the configuration of the dial.
, b is an explanatory diagram of the configuration for locking and unlocking the dial, FIG. 6 is an explanatory diagram of another embodiment of the paper feed cassette of the present invention, FIG. 7 is an explanatory diagram of the main part of the side plate interval adjustment mechanism, and FIG. FIG. 8 is a diagram illustrating a specific configuration of a variable side plate, FIG. 9 is a diagram illustrating a specific layout of a recess for locking a stopper, and FIG. 10 is a diagram illustrating a configuration of a conventional paper feed cassette. DESCRIPTION OF SYMBOLS 1...Paper feed cassette, 2...Recording paper, 3...Registration roller pair, 4...Photoconductor, 5...Charging charger, 6...Laser optical system, 7...Developing device, 8...Transfer charger , 9... Fixing device, 17
...Cassette cover, 20...Bottom plate, 21...
Variable side plate, 22...Side plate spacing adjustment dial, 2
3...Dial release plate, 25...Cassette base, 26...Intermediate bevel gear, 29...Pinion, 30
... Rack, 33 ... Bevel gear, 34 ... Stop collar, 40 ... Stopper operating piece, 50 ... Notch, 5
4...Groove, 55...Guided piece.

Claims

[Claims for Utility Model Registration] (1) A paper feed cassette base, a side plate interval adjustment mechanism disposed on the inner bottom surface of the cassette base, and movement equal distance in the width direction in conjunction with each other by the side plate interval adjustment mechanism. a pair of variable side plates arranged so as to be adjustable, a spring that constantly biases the side plate spacing adjustment mechanism so that each variable side plate moves outward in the width direction, and a cassette cover that opens and closes an opening on the top surface of the cassette base. A side plate spacing adjustment dial that interlocks with a side plate spacing adjustment mechanism is disposed on the upper surface of the paper feed cassette base at a position covered by the cassette cover when the paper feed cassette base is closed, and the side plate spacing adjustment dial interlocks with the side plate spacing adjustment mechanism. The side plate spacing can be adjusted by operating the side plate spacing adjustment mechanism, and a stopper elastically biased outward in the axial direction is provided on one axial end surface of the dial, and a stopper is provided on the cassette base side. An elastically deformable stopper operating piece is disposed opposite to the end surface of the dial, and the cassette cover includes a side plate that presses and deforms the stopper operating piece when the cassette cover is closed to press against the stopper and lock the dial. 1. A paper feed cassette, characterized in that a spacing adjustment dial release plate is provided in a protruding manner, and the cassette cover is further formed with an opening window for exposing the dial when the cassette cover is closed. (2) a paper feed cassette base, a bottom plate supported on the cassette base so as to be movable up and down, and a side plate interval adjustment mechanism disposed on the inner bottom surface of the cassette base;
A pair of variable side plates arranged so as to be movable by the side plate interval adjustment mechanism in conjunction with each other and an equal distance in the width direction, and the side plate interval adjustment mechanism is constantly energized so that each of the variable side plates moves outward in the width direction. a cassette cover that opens and closes the upper surface opening of the cassette base; and a side plate spacing adjustment dial that can adjust the side plate spacing by operating the side plate spacing adjustment mechanism according to the rotation angle of the dial. A notch is formed in the bottom plate to allow the variable side plate extending from the inner bottom surface of the cassette base to project upward, and a guided piece extending in a direction perpendicular to the side plate is integrated with one end of the variable side plate. A paper feeding cassette further characterized in that one end of the side plate extends beyond the bottom plate and the guided piece is slidably inserted into a guide groove formed on the cassette base.