JPS6327814U

JPS6327814U -

Info

Publication number: JPS6327814U
Application number: JP12090786U
Authority: JP
Priority date: 1986-08-08
Filing date: 1986-08-08
Publication date: 1988-02-24

Description

[Brief explanation of drawings]

第１図〜第１１図は本考案の一実施例を説明す
るためのもので、このうち第１図は位置検出装置
を使用した複写機の斜視図、第２図は位置検出装
置の検出原理を説明するための原理図、第３図は
回転検出機構の要部を示す斜視図、第４図は接触
リングの側面図、第５図は信号発生部の回路図、
第６図および第７図は第１の信号および第２の信
号のタイミング図、第８図は位置検出制御部のブ
ロツク図、第９図は部分複写の領域として３角形
が指定された場合の説明図、第１０図は部分複写
の領域として４角形が指定された場合の説明図、
第１１図は複写機の感光ドラムおよびその周辺を
示す概略構成図、第１２図は位置検出装置を備え
た従来の複写機の第１の例を示す斜視図、第１３
図は従来の複写機の第２の例を説明するためのそ
の要部を示す平面図である。３２……プラテンガラス、３４……コントロー
ル・コンソール、３９……指示片、４１……第１
のワイヤ、４２……第２のワイヤ、５１……第１
のプーリ、５２……第２のプーリ、５６……第１
の回転検出機構、５８……第２の回転検出機構、
７８……第１の回転検出回路、８１、８９……カ
ウンタ、８６……ＲＡＭ、８７……第２の回転検
出回路、９２……演算回路。 Figures 1 to 11 are for explaining one embodiment of the present invention, of which Figure 1 is a perspective view of a copying machine using a position detection device, and Figure 2 is a detection principle of the position detection device. 3 is a perspective view showing the main parts of the rotation detection mechanism, FIG. 4 is a side view of the contact ring, and FIG. 5 is a circuit diagram of the signal generating section.
Figures 6 and 7 are timing diagrams of the first signal and second signal, Figure 8 is a block diagram of the position detection control section, and Figure 9 is a diagram of the case where a triangle is specified as the area for partial copying. An explanatory diagram, FIG. 10 is an explanatory diagram when a rectangle is specified as the area for partial copying,
FIG. 11 is a schematic configuration diagram showing a photosensitive drum and its surroundings of a copying machine, FIG. 12 is a perspective view showing a first example of a conventional copying machine equipped with a position detection device, and FIG.
The figure is a plan view showing the main parts of a second example of a conventional copying machine. 32... platen glass, 34... control console, 39... instruction piece, 41... first
wire, 42... second wire, 51... first wire
pulley, 52...second pulley, 56...first
rotation detection mechanism, 58... second rotation detection mechanism,
78...First rotation detection circuit, 81, 89...Counter, 86...RAM, 87...Second rotation detection circuit, 92...Arithmetic circuit.

Claims

[Scope of utility model registration request]

An indicator piece for instructing the position, first and second wires each having one end fixed to the indicator piece, and a wire near the platen glass on which the original is placed.
a first rotating body arranged at a point and rotated according to the amount of the first wire pulled out; and a second rotating body arranged at another point near the platen glass on which the original is placed and rotated according to the amount of the second wire pulled out. a second rotating body that rotates accordingly, a first wire detection means that detects the rotational direction and amount of rotation of the first rotating body, and a first wire detection means that detects the rotational direction and amount of rotation of the second rotating body. 2 wire detection means; and a position calculation means for inputting the detection results of the first and second wire detection means and calculating the position of the indicator piece on the platen glass. Device.