JPH0314643U

JPH0314643U -

Info

Publication number: JPH0314643U
Application number: JP7355489U
Authority: JP
Priority date: 1989-06-26
Filing date: 1989-06-26
Publication date: 1991-02-14

Description

[Brief explanation of drawings]

第１図は本考案に係る原稿サイズ検知装置の要
部の斜視図。第２図は第１図の装置を全体的にみ
た平面図、第３図は第２図の装置の作動過程の１
を示す平面図、第４図は第２検知走査体の１実施
例の断面図、第５図は第２検知走査体の他の実施
例の断面図、第６図は原稿台カバーの裏面端部を
黒色とした実施例の斜視図、第７図は第６図の実
施例の一部の拡大断面図、第８図、第９図、第１
０図、第１１図は各種サイズの原稿と受光器の信
号電流との関係を示した模式図、第１２図は１実
施例の動作系統図である。図中、１……コンタクトガラス、２……第１検
知走査体、３……第２検知走査体、４……第１プ
ーリ、５……第２プーリ、６……第１のワイヤ、
７……第２のワイヤ、８……発光器、９……受光
器、１０……原稿、１１……初期位置検出用セン
サ、１２……停止位置検出用センサ、１３……第
１原稿走査部材（フルレートキヤリツジ）、１４
……第２原稿走査部材（ハーフレートキヤリツジ
）、１５……原稿先端（サイド）ガイド、１６…
…ランプ、１７，１８，１９……反射部材、２０
……原稿台カバー、２１……ステツプモータ。 FIG. 1 is a perspective view of the main parts of a document size detection device according to the present invention. Fig. 2 is an overall plan view of the device shown in Fig. 1, and Fig. 3 is an illustration of the operating process of the device shown in Fig. 2.
4 is a sectional view of one embodiment of the second detection scanning body, FIG. 5 is a sectional view of another embodiment of the second detection scanning body, and FIG. 6 is a back end of the document table cover. FIG. 7 is an enlarged sectional view of a part of the embodiment shown in FIG. 6, FIG. 8, FIG. 9, and FIG.
0 and 11 are schematic diagrams showing the relationship between originals of various sizes and the signal current of the light receiver, and FIG. 12 is an operational system diagram of one embodiment. In the figure, 1... contact glass, 2... first detection scanning body, 3... second detection scanning body, 4... first pulley, 5... second pulley, 6... first wire,
7... Second wire, 8... Emitter, 9... Light receiver, 10... Original, 11... Sensor for initial position detection, 12... Sensor for stop position detection, 13... First original scanning Part (full rate carriage), 14
...Second document scanning member (half-rate carriage), 15...Document leading edge (side) guide, 16...
...Lamp, 17, 18, 19...Reflection member, 20
...Document table cover, 21...Step motor.

Claims

[Claims for Utility Model Registration] (1) A first and second light emitting device disposed at the bottom of the contact glass of a copying machine, comprising a light emitter that illuminates the upper surface of the contact glass and a light receiver that receives the reflected light of the irradiation. A document size of a copying machine comprising: a detection scanning member; a means for moving the first detection scanning member in parallel in the longitudinal direction of the contact glass; and a means for moving the second detection scanning member in parallel in a direction perpendicular to the longitudinal direction of the contact glass. Detection device. (2) The document size detection device for a copying machine according to claim 1, wherein the means for moving the detection scanning body in parallel includes a drive motor, a pulley, and a wire. (3) The document size detection device for a copying machine according to claim 1, wherein the means for moving the detection scanning body in parallel further includes a rail fixed to the machine frame of the copying machine. (4) The copying machine according to claim 2, wherein the pulley of the means for moving the first detection scanning body in parallel and the pulley of the means for moving the second detection scanning body in parallel are fixed on the same axis. Original size detection device. (5) The document size detection device for a copying machine according to claim 2, wherein the drive motor is a step motor, and the moving distance is controlled by the number of pulses of the drive motor. (6) Claim 1, wherein the means for parallelly moving the detection scanning body further includes a photo sensor for detecting an initial position and a stop position of the detection scanning body.
Document size detection device described. (7) The document size detection device for a copying machine according to claim 1, wherein the light emitting device of the second detection scanning member is a reflected light of a lamp of the first document scanning member. (8) The document size detection device for a copying machine according to claim 1, wherein the edge of the back surface of the document table cover is black. (9) The document size detection device for a copying machine according to claim 1, wherein the means for parallelly moving each detection scanning body, the light emitter, and the light receiver are linked with a control device of the copying machine. (10) Claim 7, characterized in that the control device has means for moving both detection scanning bodies before copying.
Document size detection device for the copying machine described. (11) The document size detection device for a copying machine according to claim 7, wherein the control device has means for stopping both detection scanning bodies at their maximum scanning positions. (12) The document size detecting device for a copying machine according to claim 7, wherein the control device has means for returning both detection scanning bodies after completion of copying the commanded number of copies of one document. (13) The copying machine according to claim 7, wherein the control device includes means for determining the paper size from the output of the light receiver and means for commanding the paper tray based on the output of the means for determining the paper size. Original size detection device.