JPH0422442U

JPH0422442U -

Info

Publication number: JPH0422442U
Application number: JP6397690U
Authority: JP
Priority date: 1990-06-19
Filing date: 1990-06-19
Publication date: 1992-02-25

Description

[Brief explanation of the drawing]

第１図は本考案の実施例の静止状態を示す模式
的断面図、第２図は第１図において搬送状態を示
す模式的断面図、第３図は第１図において給紙カ
セツトが装着されていない状態を示す模式的断面
図、第４図は第１図のフオトセンサと中央処理装
置及び表示部の関係を示すシステムブロツク図、
第５図は検出結果と表示切換などの作動の関係を
示すフローチヤート、第６図は従来例を示す模式
的断面図である。６……画像形成機器、７……給紙カセツト、７
ａ……底板、８……押上レバー、８ａ……軸、８
ｂ……コロ、８ｃ……バネ、９……アクチユエー
タ、９ａ……軸、９ｂ……端部、９ｃ……突部、
９ｄ，９ｅ……シヤツタブレード、９ｆ……スロ
ツト、９ｇ……バネ、１０……フオトセンサ、１
１……発光素子、１２……受光素子、１３……給
紙コロ、１４……用紙搬送経路、１５……ターン
ガイド、１６……待機ローラ、１７……待機セン
サ、１８……中央処理装置、１８ａ……ロム、１
８ｂ……ラム、１９……表示信号、２０……表示
部。 FIG. 1 is a schematic sectional view showing the embodiment of the present invention in a stationary state, FIG. 2 is a schematic sectional view showing the transport state in FIG. 1, and FIG. FIG. 4 is a system block diagram showing the relationship between the photo sensor in FIG. 1, the central processing unit, and the display section;
FIG. 5 is a flowchart showing the relationship between detection results and operations such as display switching, and FIG. 6 is a schematic sectional view showing a conventional example. 6... Image forming device, 7... Paper feed cassette, 7
a...Bottom plate, 8...Push-up lever, 8a...Shaft, 8
b...roller, 8c...spring, 9...actuator, 9a...shaft, 9b...end, 9c...projection,
9d, 9e...Shutter blade, 9f...Slot, 9g...Spring, 10...Photo sensor, 1
1... Light emitting element, 12... Light receiving element, 13... Paper feeding roller, 14... Paper conveyance path, 15... Turn guide, 16... Standby roller, 17... Standby sensor, 18... Central processing unit , 18a...ROM, 1
8b... Ram, 19... Display signal, 20... Display unit.

Claims

[Scope of Claim for Utility Model Registration] A paper feed unit state detection device for an image forming apparatus in which a paper storage cassette is removably attached to a paper feed unit, wherein the paper storage cassette is supported in a swingable manner, and the paper storage cassette is attached to the paper feed unit. When the paper storage cassette is installed in the paper storage cassette, the paper storage cassette contacts the paper storage cassette and is displaced from the first position to the second position. Said second
an actuator that is displaced from one position to a third position; a switch body that outputs an on/off signal according to the position of the actuator; and whether the paper storage cassette is attached or not and the A paper feed section state detection device comprising: a detection means for detecting the presence or absence of paper in the paper storage cassette or in the downstream conveyance path.