JPH0249942U

JPH0249942U -

Info

Publication number: JPH0249942U
Application number: JP12953388U
Authority: JP
Priority date: 1988-10-04
Filing date: 1988-10-04
Publication date: 1990-04-06

Description

[Brief explanation of drawings]

第１図は本考案の手差しトレイの構成を示す側
面図、第２図は本考案の手差しトレイの支持機構
の側面図、第２ａ図はそのトーシヨンスプリング
の支持機構の説明図、第３図はトレイに設けるペ
ーパーガイドの正面図、第３ａ図はそのペーパー
ガイドの斜視図、第４図は基準線の調整機構の平
面図、第４ａ図はその要部の構成を示す説明図、
第５図はバランスウエイトを設ける場合の平面図
、第５ａ図はバランスウエイトの揺動機構の説明
図、第６図はボトムプレートと下ガイド板との関
係を示す斜視図、第７図はさばきローラの押圧力
調整機構の説明図、第８図および第８ａ図はそれ
ぞれ第７図とは別のさばきローラの押圧力調整機
構の説明図、第９図は用紙のカール修正機構の説
明図、第９ａ図は従来の給紙ローラに対する用紙
の接触状態の説明図であり、第１０図はガイド板
に補強部材を設けた場合の説明図である。図中の符号、１……画像形成装置、２……手差
し給紙装置、３……給紙ローラ、５……用紙さば
き機構、５ｂ……さばきローラ、１０……ボトム
プレート、１２……突出部、１３……溝、１５…
…カム、２０……手差しトレイ、２２……ブラケ
ツト、２５……トーシヨンスプリング、３０……
ペーパーガイド、３１……規制面、３３……突出
部、３４……溝、３５……基準線、３６……側フ
レーム、４０……バランスウエイト、４１……ア
ーム、５０……アーム、５５……レバー、６０…
…さばきローラ支持アーム、６１……スプリング
、６２……ソレノイド、７０……ノーペーパーセ
ンサー、８０……ガイド板、８１……トーシヨン
バー。 Figure 1 is a side view showing the configuration of the manual tray of the present invention, Figure 2 is a side view of the support mechanism of the manual tray of the present invention, Figure 2a is an explanatory diagram of the torsion spring support mechanism, and Figure 3. 3A is a front view of the paper guide provided in the tray, FIG. 3A is a perspective view of the paper guide, FIG. 4 is a plan view of the reference line adjustment mechanism, and FIG. 4A is an explanatory diagram showing the configuration of its main parts.
Figure 5 is a plan view when a balance weight is provided, Figure 5a is an explanatory diagram of the swinging mechanism of the balance weight, Figure 6 is a perspective view showing the relationship between the bottom plate and the lower guide plate, and Figure 7 is the separation. An explanatory diagram of a roller pressing force adjustment mechanism, FIGS. 8 and 8a are respectively explanatory diagrams of a separating roller pressing force adjustment mechanism different from FIG. 7, and FIG. 9 is an explanatory diagram of a paper curl correction mechanism. FIG. 9a is an explanatory diagram of the state of contact of paper with the conventional paper feed roller, and FIG. 10 is an explanatory diagram of the case where a reinforcing member is provided on the guide plate. Symbols in the figure: 1... Image forming device, 2... Manual paper feeding device, 3... Paper feeding roller, 5... Paper sorting mechanism, 5b... Sorting roller, 10... Bottom plate, 12... Protrusion Part, 13...Groove, 15...
...Cam, 20...Manual feed tray, 22...Bracket, 25...Torsion spring, 30...
Paper guide, 31...Restriction surface, 33...Protrusion, 34...Groove, 35...Reference line, 36...Side frame, 40...Balance weight, 41...Arm, 50...Arm, 55... ...Lever, 60...
...Separating roller support arm, 61...Spring, 62...Solenoid, 70...No paper sensor, 80...Guide plate, 81...Torsion bar.

Claims

[Claims for Utility Model Registration] (1) A manual feed tray is swingably provided to the main body frame via a support shaft, and is supported so as to be biased in the closing direction by a torsion spring provided on the support shaft. At the same time, a side guide is movably provided on the paper placement surface of the tray so that both sides of the paper can be regulated between the side guide and a reference line, and the side guide A manual feed tray for an image forming apparatus, characterized in that a protrusion member is provided that slides in a groove provided at an end of the tray body, and the protrusion member is configured to be inserted under the paper sheet. Device. (2) In order to regulate one side of the paper placed on the tray, a swinging mechanism is provided on the side frame that sets the reference line, and the swinging mechanism moves the side frame to form an image. Utility model registration claim 1, characterized in that the reference line on the paper feeding side is configured to be adjustable in accordance with the paper conveyance path of the device.
A manual feed tray device for an image forming apparatus according to paragraph 1. (3) A manual feed tray is swingably provided with respect to the main body frame via a support shaft, and is supported so as to be biased in a closing direction by a torsion spring provided on the support shaft, and the paper in the manual feed tray is A balance weight is provided on the placement surface to press the paper, so that a predetermined pressing force can be applied to large-sized paper or paper with large frictional resistance between the paper sheets. A manual feed tray device for an image forming apparatus according to claim 1 or 2 of the utility model registration claim. (4) A bottom plate provided in the manual paper feed device of the main body of the image forming apparatus is configured to press the paper toward the paper feed roller using a cam mechanism, and a protrusion is formed at the tip of the bottom plate. The protruding portion is configured to be able to slide in a groove portion provided on the lower guide plate, so as to prevent a gap from being formed at the connection portion with the lower guide plate when the bottom plate swings. 1. A manual tray device for an image forming apparatus, characterized in that: (5) A paper handling mechanism provided in the paper feeding device of the main body of the image forming apparatus is constituted by a drive roller and a handling roller, and the pressing force of the handling roller against the driving roller is adjustable, and 1. A paper feeding device for an image forming apparatus, characterized in that the pressing force can be arbitrarily adjusted by means of swinging a balance weight according to the type of paper.