JPS5865457A - Safety device for cover of original plate of laser recorder - Google Patents

Safety device for cover of original plate of laser recorder

Info

Publication number
JPS5865457A
JPS5865457A JP16514381A JP16514381A JPS5865457A JP S5865457 A JPS5865457 A JP S5865457A JP 16514381 A JP16514381 A JP 16514381A JP 16514381 A JP16514381 A JP 16514381A JP S5865457 A JPS5865457 A JP S5865457A
Authority
JP
Japan
Prior art keywords
cover
document table
document
laser beam
laser
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
JP16514381A
Other languages
Japanese (ja)
Inventor
Toyoji Ito
豊次 伊藤
Kenji Ikeda
憲治 池田
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Konica Minolta Inc
Original Assignee
Konica Minolta Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Konica Minolta Inc filed Critical Konica Minolta Inc
Priority to JP16514381A priority Critical patent/JPS5865457A/en
Publication of JPS5865457A publication Critical patent/JPS5865457A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G15/00Apparatus for electrographic processes using a charge pattern
    • G03G15/60Apparatus which relate to the handling of originals
    • G03G15/605Holders for originals or exposure platens

Landscapes

  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Laser Beam Printer (AREA)
  • Holders For Sensitive Materials And Originals (AREA)
  • Exposure Or Original Feeding In Electrophotography (AREA)

Abstract

PURPOSE:To prevent the entry of laser beams to users' eyes by detecting whether the cover of an original plate is in a normal closed position or not and interrupting the irradiation of the laser beams to the original plate when not in the normal closed position. CONSTITUTION:When a control signal P of an ''L'' is applied to an NOR circuit G1 and an original cover 9 is open, the light from a light emitting diode 13 is made incident to a phototransistor (TR) 14 and the collector voltage of the TR14 goes to an ''L'' and the output of an inversion circuit A1 goes to an ''H''. In the end, the output of the circuit G1 goes to an ''L''. Therefore a transistor Tr1 goes off, a rotary solenoid 16 is not energized, a shutter 15 exists in the optical path, and the irradiation of the laser beam to an original plate is obviated. When the cover 9 is closed, the light of the diode 13 is shielded by a projection 11 for light shielding, and the solenoid 16 is energized by the operation reverse from the above, whereby the laser beam is irradiated to the plate 8.

Description

【発明の詳細な説明】 本発明は、レーザビームで原稿面を走査して原稿画像を
読み堆り記録するレーザ記録装置の原稿台カバー安全装
置に関する。
DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a document platen cover safety device for a laser recording apparatus that scans a document surface with a laser beam to read and record a document image.

上記レーザプリンタにおいては1作業時、原稿面に向け
て読取用レーザビームが照射されているため、使用者が
誤2て原稿台カバー奮闘けると、レーザビームが目に入
る危険性がある。
In the laser printer described above, a reading laser beam is irradiated onto the document surface during one operation, so if the user accidentally struggles to cover the document table, there is a risk that the laser beam will hit the user's eyes.

父、原稿台カバーが開いている状態において身体の一部
がコピー釦に触れ、レーザビームの照射が開始される危
険性がある。更に、原稿台カバーが一応閉じられてはい
るが、正常に閉じられていないため、レーザビームの一
部が漏れ、使用者の目に入る危険性がある。又、原稿台
カバーが正常な閉状勤にないと、外部の光が機械内に入
り、読取が正常に行われない危険性がある・ 本発明は、このような事態が生ずることを防止するため
になされたもので、原稿台カバーが正常の閉位置にある
か否かを検知する検知手段を設け、正常の閉位置にない
ときは、レーザビームの原稿台への照射を遮断するよう
に構成することにより、使用者の目にレーザビームが入
る事故の発生を防止すると共に、正常の読Xl可能にし
友ものである。
Dad, there is a danger that if a part of your body touches the copy button while the document table cover is open, the laser beam irradiation will start. Further, although the document table cover is temporarily closed, it is not closed properly, so there is a risk that a portion of the laser beam may leak and enter the user's eyes. In addition, if the document table cover is not in the normal closed position, there is a risk that external light will enter the machine and reading will not be performed properly.The present invention aims to prevent such a situation from occurring. This device is equipped with a detection means for detecting whether or not the document table cover is in the normal closed position, and is configured to cut off the irradiation of the laser beam to the document table if it is not in the normal closed position. This prevents the occurrence of an accident in which the laser beam enters the user's eyes, and also enables normal reading.

以下11図面を参照し本発明の詳細な説明する。The present invention will be described in detail below with reference to 11 drawings.

g/図は本発明に係る原稿台カバー安全装置の一実施例
を示す構成図で、原S読取装置の一部を併すて図示した
0図において、lは原稿読取用のレーザで、例えばH・
−y・レーザである・原稿読取の光学系は、このガスレ
ーザlから出力されたレーザビームが、ミラーλ〜≠を
経て′ポリゴン!に入射し、そこで1向された後、f・
θレンズ≦倉通9ミラー7で反射して原稿台lに向かい
、原稿面での反射光が光電変換素子(図示せず)に入射
するように構成されている。りは原稿台カバーで、原稿
台ttS<本体)にヒンジ結合されている。この原稿台
カバー2の把手10の1方には、遮光用突起iiが設け
られ、又、原稿台r@には、この突起/lが嵌入する凹
部/λが形成されている。この凹部lコには、i@2図
に示す如く、原稿台カバー2が正常の閉位置にあるかど
うかを検知するだめの発光ダイオード/J及びホトトラ
ンジスタ14tが対向配置されている。1zrizラー
2からミラー3に向かうレーザビームのJ断を行うため
のシャッタで、ロータリーンレノイド/≦にょシ駆動さ
れ、ロータリーンレノイド/乙が非通電状態のときに光
路を閉鎖し、通電状騰のときに光路かも退避するもので
ある。
Figure g/ is a configuration diagram showing an embodiment of the document table cover safety device according to the present invention. H・
-y・The optical system for reading the original is a laser.The laser beam output from this gas laser l passes through the mirror λ~≠ and passes through the 'polygon! After entering f.
θ lens≦Kuradori 9 The light is reflected by the mirror 7 toward the document table l, and the reflected light from the document surface is configured to enter a photoelectric conversion element (not shown). The other is the document table cover, which is hinged to the document table ttS<main body). A light-shielding protrusion ii is provided on one side of the handle 10 of the document table cover 2, and a recess /λ into which the protrusion /l fits is formed in the document table r@. In this recess 1, a light emitting diode /J and a phototransistor 14t, which are used to detect whether or not the document table cover 2 is in the normal closed position, are arranged facing each other, as shown in FIG. The shutter is used to cut off the laser beam heading from the mirror 2 to the mirror 3. It is driven by the rotary lean lens, and closes the optical path when the rotary lean lens is not energized. The optical path is also evacuated at this time.

上記発光ダイオード/J、ホトトランジスタzp及びロ
ータリーンレノイド14の電気的接続は#I3図で示さ
れ、正の電源ライン(+v@a)とアースの間には、発
光ダイオード/Jと抵抗R,との直列回路、並びに抵抗
R3とコンデンサC。
The electrical connection of the above-mentioned light emitting diode /J, phototransistor zp and rotary leonoid 14 is shown in diagram #I3, and between the positive power supply line (+v@a) and the ground, the light emitting diode /J and the resistor R, series circuit with, as well as resistor R3 and capacitor C.

との直列回路が並列後続されており、このコンデンサC
1にはホトトランジスタ/4tが並列!I続されている
。又、ホトトランジスタl≠のコレクタ電圧を反転回路
A、を介して受けるNOR回路回路Fi1電11Etに
よるロータリーンレノイド16への通電回路を開閉する
スイッチングトランジスタTrtを制御するもので、他
方の入力端子は制御潮干となっており、外部からの制御
信号Pを受は得るように構成されている。
A series circuit with C is connected in parallel, and this capacitor C
1 has a phototransistor/4t in parallel! It is connected. Also, it controls the switching transistor Trt which opens and closes the energizing circuit to the rotary lean lenoid 16 by the NOR circuit Fi1 electric circuit 11Et which receives the collector voltage of the phototransistor l≠ through the inverting circuit A, and the other input terminal is It has a control function and is configured to receive a control signal P from the outside.

次に、上記実施例の動作を説明する。まずNOR回路G
1に“L”の制御信号Pが与えられ、しかも原稿かバー
2が開いている場合について述べると、発光ダイオード
13から出九光はホトトランジスタ/4Cに入射し、ホ
トトランジスタ/lのコレクタ電圧が1L”となり、反
ll1A回絡ム1の出力が”Hlとなって、結局NOR
回路G、の出力がIILIIIとなる。このためトラン
ジスタTrlはオフして1、ロータリーンレノイド/l
は通電されない、従って、シャッタ/Jは光路中に存在
し、原稿台lにレーザビームが照射されることはない。
Next, the operation of the above embodiment will be explained. First, NOR circuit G
1 is given an "L" control signal P and the document bar 2 is open. Nine lights emitted from the light emitting diode 13 enter the phototransistor /4C, and the collector voltage of the phototransistor /1 increases. becomes 1L", and the output of anti-ll1A circuit 1 becomes "Hl", and eventually becomes NOR.
The output of circuit G becomes IILIII. Therefore, the transistor Trl is turned off to 1, and the rotary leannoid/l
is not energized, therefore, the shutter /J is present in the optical path and the document table l is not irradiated with a laser beam.

次に原稿カバー2を閉じると、遮光用突起llによって
発光ダイオード13の光がさえぎられ、ホトトランジス
タl参はオフし、抵抗8.とコンデンサC3の値で決ま
る一定のタイミングでもってトランジスタTrlがオン
し、ロータリーンレノイド16が通電される。この通電
により、シャッタl!が光路から退避するため、レーザ
ビームを原稿台lに向けて照射し得る。尚、原稿台カバ
ー2が閉じられた状態であっても、N011回路G回路
H”の制御信号Pが与えられるとその出力が“Loとな
るため、シャッタljが光路を閉じレーザビームの原稿
台lへの照射はなされない、従って、この制御信号Pに
より、レーザビームt−原稿読取時にのみ照射し得るよ
うに構成できる。又、その他の異常事態の発生に際し、
検知回路の岨動作の危険性が有る場合、この制御信号P
t用いて強制的にa−タリーンレノイド/Af:オフさ
せる。
Next, when the document cover 2 is closed, the light from the light emitting diode 13 is blocked by the light shielding protrusion 11, the phototransistor 1 is turned off, and the resistor 8. At a fixed timing determined by the value of the capacitor C3, the transistor Trl is turned on, and the rotary lean lens 16 is energized. This energization causes the shutter l! Since the laser beam is withdrawn from the optical path, the laser beam can be irradiated toward the document table l. Note that even if the document table cover 2 is closed, when the control signal P of the N011 circuit G circuit H is applied, the output becomes "Lo," so the shutter lj closes the optical path and the laser beam is transferred to the document table. Therefore, by using this control signal P, the laser beam t can be configured to be irradiated only when reading an original. In addition, in the event of other abnormal situations,
If there is a risk of the detection circuit's operation, this control signal P
Use t to forcibly turn off a-taleenlenoid/Af.

第参図は本発明の他の実施例會示す電気的優絖図で、こ
の実施例は、原稿台カッ(−2の開閉t−磁気的な検知
手段を用いて検知すると共に、レーザビームの原稿台l
への照射の迩1rrt、レーザlそのものの発t!を停
止することにより行うものである(第1図及びg3図と
同一部分には同一符号を付しその説明を省略する)。図
において、コOは原稿台カバー2の下面に突起//の代
りに取付けられた磁石、λIは原稿台tgRの凹部/コ
に埋め込まれ九リードスイッチ等の磁気スイッチで、こ
の磁気スイッチ21は常開接点を有し、コンデンサCs
K並列接続されている。又、抵抗R雪とコンデンサC1
との接続点の電圧は、反転回路ム、の代シに設けたバッ
7アアンプムat経て、N011回路G、に与えられ、
この出力によってトランジスタTR1がオン・オフされ
るように構成されている。RY t′i電源E8とレー
ザドライバDB及びレーザlとを結ぶ電力供給ラインの
開閉を行うリレーで、上記トランジスタTryによシ割
御されるになっている。この実施例において原稿台カバ
ー2を開くと、磁石コQが磁気スイッチλlから遠ざか
り、磁気スイッチコIが開かれてバックアアンプム1ρ
為ら“H″なる信号が出力され、制御信号Pの@H″、
′L″にかかわらず、トランジスタTryはオフされ、
レーザドライバDRへの電力供給がストップする。
The second embodiment is an electrical diagram showing another embodiment of the present invention. This embodiment detects the opening/closing of the document table cup (-2) using a magnetic detection means, and stand l
1rrt of irradiation, and the emission of the laser itself! (The same parts as in Fig. 1 and g3 are given the same reference numerals and their explanations are omitted). In the figure, O is a magnet attached to the lower surface of the document table cover 2 in place of the protrusion, and λI is a magnetic switch such as a reed switch embedded in the recess of the document table tgR. It has a normally open contact and the capacitor Cs
K are connected in parallel. Also, resistor R snow and capacitor C1
The voltage at the connection point with the inverting circuit G is applied to the N011 circuit G via a buffer amplifier provided in place of the inverting circuit G.
The transistor TR1 is configured to be turned on and off by this output. RY t'i This is a relay that opens and closes the power supply line connecting the power source E8, the laser driver DB, and the laser l, and is controlled by the transistor Try. In this embodiment, when the document table cover 2 is opened, the magnet Q moves away from the magnetic switch λl, the magnetic switch I is opened, and the backup amplifier 1ρ
Therefore, a signal “H” is output, and the control signal P @H”,
Regardless of 'L'', transistor Try is turned off,
Power supply to the laser driver DR is stopped.

このため、レーザ/の発振は停止し、レーザビームの原
稿台tへの照射は遮断される。逆に原 □構台カバータ
を閉じると、磁石λ0が磁気スイッチλlに接近しく矢
印で図示)、磁気スイッチ21が閉じられ、制御信号P
が′L”の場合にはリレーRYがオンし、レーザlの発
振が再開される。
Therefore, the oscillation of the laser / is stopped, and the irradiation of the laser beam onto the document table t is interrupted. Conversely, when the gantry cover is closed, the magnet λ0 approaches the magnetic switch λl (as shown by the arrow), the magnetic switch 21 is closed, and the control signal P is
When is 'L', relay RY is turned on and oscillation of laser I is restarted.

尚、87図及びS−図で示した実施例の場合、例えば、
第5図に示す如く、原稿台カバータ側に発光素子/j(
外乱光による検知手段の誤動作を避ける丸め、ここでの
発光素子13は赤外光を発するもの又はパルス発光する
ものであることが好ましい)を設け、原稿台1@に受光
素子/参會設けても艮い、又、操作者が故意に検知手段
の妨沓tすることも考えられるので、突起/lに、例え
ば、第6図に示す如きバーコードを設け、凹部/λ内に
バーコードに対向して反射型センナ(発光部と受光部を
有し反射光量の変化を検出するもの)を設置し、この出
力から、突起llを検知するように構成して、検知梢[
七同上させ、上述のような場合での安全性tも高めるこ
とが好ましい。
In addition, in the case of the embodiment shown in Figure 87 and Figure S, for example,
As shown in Fig. 5, a light emitting element /j (
The light emitting element 13 here is preferably one that emits infrared light or one that emits pulsed light) is provided to avoid malfunction of the detection means due to ambient light, and a light receiving element is provided on the document table 1. Also, since it is possible that the operator may intentionally obstruct the detection means, a bar code as shown in FIG. A reflective sensor (having a light emitting part and a light receiving part and detecting changes in the amount of reflected light) is installed facing the sensor, and is configured to detect the protrusion 1 from the output of the sensor.
It is preferable to do the same as above and also increase the safety t in the above-mentioned cases.

更に、原稿台カパータが正常の閉位置にあるかどうかの
検知手段は、上記のものの他に光導電素子やフォトダイ
オードを使ったもの尋があり、又、光学式や磁気式以外
の手段として、マイクロスイッチ食用い友もの等がある
。従って、上記実施例のものに検知手段を限る必要はな
め。
Furthermore, in addition to the above-mentioned means for detecting whether or not the document platen cover is in the normal closed position, there are methods using photoconductive elements or photodiodes, and means other than optical or magnetic methods. There are edible companions to microswitches. Therefore, there is no need to limit the detection means to that of the above embodiment.

又、検知手段の取付位置としては、原稿台カバー2の開
閉移動量の最大位置近傍に対向する原一台を稠の位置を
選択することがその検知Witを高める上で最も好まし
―が、必ずしも把手IO付近である必要はない、j!に
その個数が複数であれば種度は↓り向上する。又、原稿
台カバー2が正常の閉位置にない旨の信号を操作パネル
上に嵌示するように構成すれば、便用者は速やかにその
対応tとれる。
In addition, as the mounting position of the detection means, it is most preferable to select a position near the maximum position of the opening/closing movement of the document table cover 2, with the original plate facing the document table cover 2, in order to increase the detection Wit. It doesn't necessarily have to be near the handle IO, j! If there are more than one, the degree of species will increase by ↓. Furthermore, if a signal indicating that the document table cover 2 is not in the normal closed position is displayed on the operation panel, the user can quickly take appropriate action.

以上説明したように、本発明によれば、原稿台カバーが
正常の閉位置にないとIkはレーザビームの照射’cm
断する原稿台カバー安全装置を実現でき、使用者の目に
レーザビームが入る事故の発生を防止できると共に、正
常の続堆が可能になる。
As explained above, according to the present invention, if the document table cover is not in the normal closed position, Ik is
It is possible to realize a safety device for the document table cover that cuts off the cover, thereby preventing the occurrence of an accident in which a laser beam enters the user's eyes, and allowing for normal operation.

【図面の簡単な説明】[Brief explanation of the drawing]

第7図は本発明に係る原稿台カバー安全装置の一実施例
を示す構成図、第2図は第1図の凹部付近の断面図、3
47図は第1図実施例の電気的接続図、第1I!81は
本発明の他の実施例の電気的接続図、gj図及至第7図
は本発明の更に他の実施例ての要部を示す説明図である
。 l・・・読取用レーザ  j・・・ポリゴンぶ・・・f
・θレンズ   l・・・原稿台?・・・原稿台カバー
 10・・・把 手l/・・・連光用突起  lλ・・
・凹 部13・・・発光ダイオードl≠・・・ホトトラ
ンジスタ/j・・・シャッタ 16・・・ロータリーンレノイド コ0・・・磁 石    21・・・磁気スイッチλλ
・・・反射型センt   R1,R,・・・抵 抗C,
・・・コンデンサ   ム!・・・反転回路G1・・・
Non回路    TrI T Try・・・トランジ
スタム3・・・バッファアンプ  )4 * ”*・・
・電 源RY・・・リレー      DR・・・レー
ザドライノ(Mac・・・安定化直流電源 特許出願人 小西六写真工業株式会社 代理人弁理士井島藤治
FIG. 7 is a configuration diagram showing an embodiment of the document table cover safety device according to the present invention, FIG. 2 is a sectional view of the vicinity of the recess in FIG.
Fig. 47 is an electrical connection diagram of the embodiment shown in Fig. 1, 1I! Reference numeral 81 is an electrical connection diagram of another embodiment of the present invention, and FIGS. l...Laser for reading j...Polygon...f
・θ lens l...original table? ...Original platen cover 10...Grip handle l/...Protrusion for continuous light lλ...
・Concave part 13...Light emitting diode l≠...Phototransistor/j...Shutter 16...Rotary lean noid ko0...Magnet 21...Magnetic switch λλ
...Reflection type center t R1, R, ...Resistance C,
...Condenser! ...Inversion circuit G1...
Non circuit TrIT Try...Transistor 3...Buffer amplifier) 4 *"*...
・Power supply RY...Relay DR...Laser Drino (Mac...Stabilized DC power supply Patent applicant Fujiji Ijima, Patent attorney Roku Konishi Photo Industry Co., Ltd.

Claims (3)

【特許請求の範囲】[Claims] (1)  レーザビームで原稿面を走査して原稿画像を
読みip記録するレーザ記録装置において、原稿台カバ
ーが正常の閉位置!cめるか否かt検知する検知手段を
設け、正常の閉位置にないときは、レーザビームの原稿
台への照射を遮断することを特徴とするレーザ記録装置
の原稿台カバー安全装置。
(1) In a laser recording device that scans the document surface with a laser beam to read the document image and perform IP recording, the document table cover is in the normal closed position! 1. A document table cover safety device for a laser recording device, comprising a detection means for detecting whether the document table is closed or not, and which blocks irradiation of a laser beam to the document table when the document table is not in the normal closed position.
(2)  検知子lRは原稿台カバーが正常の閉位置に
ないことを検知するとその旨金操作パネル上に表示する
ことt%黴とする特許fil氷の範囲第1項記載のレー
ザ記録装置のilc桶台カバー安全装置。
(2) When the detector IR detects that the document table cover is not in the normal closed position, it should display this on the gold operation panel. ILC bucket stand cover safety device.
(3)原稿台カバーの開閉移動量の最大位置近傍に対向
する原稿台貴の位11に検知手段を設は九ことをtII
I黴とする特許請求の範囲第1項又は第1項記載のレー
ザ記録装置の原稿台カバー安全装置。
(3) It is recommended that a detection means be installed at position 11 of the document platen opposite to the vicinity of the maximum position of opening/closing movement of the document platen cover.
1. A document table cover safety device for a laser recording device according to claim 1 or claim 1.
JP16514381A 1981-10-15 1981-10-15 Safety device for cover of original plate of laser recorder Pending JPS5865457A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP16514381A JPS5865457A (en) 1981-10-15 1981-10-15 Safety device for cover of original plate of laser recorder

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP16514381A JPS5865457A (en) 1981-10-15 1981-10-15 Safety device for cover of original plate of laser recorder

Publications (1)

Publication Number Publication Date
JPS5865457A true JPS5865457A (en) 1983-04-19

Family

ID=15806702

Family Applications (1)

Application Number Title Priority Date Filing Date
JP16514381A Pending JPS5865457A (en) 1981-10-15 1981-10-15 Safety device for cover of original plate of laser recorder

Country Status (1)

Country Link
JP (1) JPS5865457A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6079871A (en) * 1983-10-06 1985-05-07 Canon Inc Laser beam recorder
JPS63146857U (en) * 1987-03-19 1988-09-28

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6079871A (en) * 1983-10-06 1985-05-07 Canon Inc Laser beam recorder
JPH05903B2 (en) * 1983-10-06 1993-01-07 Canon Kk
JPS63146857U (en) * 1987-03-19 1988-09-28

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