JPH0850431A - Recovering device for copying form - Google Patents

Recovering device for copying form

Info

Publication number
JPH0850431A
JPH0850431A JP18446194A JP18446194A JPH0850431A JP H0850431 A JPH0850431 A JP H0850431A JP 18446194 A JP18446194 A JP 18446194A JP 18446194 A JP18446194 A JP 18446194A JP H0850431 A JPH0850431 A JP H0850431A
Authority
JP
Japan
Prior art keywords
paper
toner
copy
copying
sheet
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
JP18446194A
Other languages
Japanese (ja)
Inventor
Shigeru Kawaguchi
滋 川口
Toru Tamagawa
徹 玉川
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.)
Toshiba Corp
Original Assignee
Toshiba Corp
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 Toshiba Corp filed Critical Toshiba Corp
Priority to JP18446194A priority Critical patent/JPH0850431A/en
Publication of JPH0850431A publication Critical patent/JPH0850431A/en
Pending legal-status Critical Current

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Abstract

PURPOSE:To enable copying again to obtain a sharp image on a recovered form by heating the toner on the form after copying to the temp. to cause brittle fracture of the toner, irradiating the form with specified laser light, and removing the scattered toner with assist gas. CONSTITUTION:A used copy paper 1 is sent to a heating roller 9 and heated to the temp. to cause brittle fracture of the toner (>=80 deg.C). During heating, the copy paper 1 is irradiated with high-peak short-pulse laser light with <=100mus pulse width and >=10<6>W/cm<2> peak power density from a laser generator through a lens system 4. Thus, removal of the toner by microablation is possible so that the toner on the copy form can be removed by optical shock effect without damaging the surface layer of the paper. The toner is blown off by assist gas 5 and the paper is outputted as a recovered paper 6 which can be again used for copying by a paper feeding part 2. By this method, paper sheets used for copying can be fast recovered in an office and can be used again for sharp copying.

Description

【発明の詳細な説明】Detailed Description of the Invention

【0001】[0001]

【産業上の利用分野】本発明はコピー用紙再生装置に係
り、特にレーザー光照射を用いたコピー用紙再生装置に
関する。
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a copy paper recycling apparatus, and more particularly to a copy paper recycling apparatus using laser light irradiation.

【0002】[0002]

【従来の技術】図6乃至図8で従来のコピー紙再生技術
について説明する。図6に従来の再生紙を製作するリサ
イクルフローを示す。現在の複写機の記録方式は、乾式
電子写真方式が主流であり、文字や画像はトナーと呼ば
れる着色樹脂粉末で形成されている。通常の用紙のリサ
イクル工程では、このトナーの除去が難しく、良質な再
生紙を得ることが非常に困難なため、コピー済みの用紙
を再生する場合は、一般の印刷された紙とは分別して収
集した上でリサイクル工程に廻すのが普通となってい
た。
2. Description of the Related Art A conventional copy paper recycling technique will be described with reference to FIGS. FIG. 6 shows a recycling flow for producing conventional recycled paper. The current recording system of a copying machine is mainly a dry electrophotographic system, and characters and images are formed by colored resin powder called toner. In the normal paper recycling process, it is very difficult to remove this toner and it is very difficult to obtain high quality recycled paper.Therefore, when recycling copied paper, collect it separately from general printed paper. After that, it was usual to send it to the recycling process.

【0003】図7は、剥離液を用いてトナー像を熱化学
的に剥離除去する装置のリサイクル工程を例解する図で
ある。この装置におけるトナー除去は、乾式電子写真方
式の熱定着プロセスを逆に辿ることにより達成される。
まず、印字された文書に剥離液(有機溶剤)を付着さ
せ、トナーと用紙との接着強度を低下させる。次に加熱
して用紙上のトナーを溶融させ、圧力をかけて溶融され
たトナーのみを剥離材に転写する。最後に剥離材に転写
されたトナーをクリーニングするとともに、トナーが分
離除去された用紙を出力する。
FIG. 7 is a diagram illustrating a recycling process of an apparatus for thermochemically peeling and removing a toner image using a peeling liquid. Toner removal in this device is accomplished by reversing the dry electrophotographic thermal fixing process.
First, a peeling liquid (organic solvent) is attached to the printed document to reduce the adhesive strength between the toner and the paper. Next, the toner on the paper is melted by heating and pressure is applied to transfer only the melted toner to the release material. Finally, the toner transferred to the release material is cleaned, and the paper from which the toner has been separated and removed is output.

【0004】図8は、レーザ光照射によりコピー紙を再
生する実施例の例解図である。レーザ発振器3は80Wの
CO2 レーザ発振器であり、レーザ照射後の紙面の光反
射率をレーザ発振器にフィードバックすることによりレ
ーザのパルス幅とパルス数を変えるようになっている。
レーザ発振器3から出たレーザ光はレンズシステム4に
よって集光され、走査される。コピー紙は紙送り手段2
によって矢印の方向に移動する。紙面に当たったレーザ
光は紙面上に記載されている文字図形などのトナーを蒸
発揮散させて文字図形などを消去する。このとき、紙の
表層部分も同時に揮散する。この紙送り手段により紙を
移動しながら、レーザ走査手段によりレーザを紙面上に
走査することで紙面上に描かれた文字図形のすべて、ま
たは、一部にレーザを照射し、揮散消去することができ
る。
FIG. 8 is an illustrative view of an embodiment in which copy paper is regenerated by laser light irradiation. The laser oscillator 3 is an 80 W CO 2 laser oscillator, and the pulse width and the number of pulses of the laser are changed by feeding back the light reflectance of the paper surface after laser irradiation to the laser oscillator.
The laser light emitted from the laser oscillator 3 is collected by the lens system 4 and scanned. Copy paper is a paper feeding means 2
To move in the direction of the arrow. The laser beam that hits the paper surface evaporates the toner such as the characters and graphics written on the paper surface to erase the characters and graphics. At this time, the surface layer of the paper is also volatilized. By moving the paper by the paper feeding means and scanning the laser on the paper surface by the laser scanning means, all or part of the character graphic drawn on the paper surface is irradiated with the laser to be erased by volatilization. it can.

【0005】[0005]

【発明が解決しようとする課題】近年、オフィスにおけ
る紙の消費量は年々増加する傾向にあり、コピー紙を再
利用することは、森林保護をはじめとする地球環境保護
の立場からみても急務の状況にある。ところが、再生紙
を製作する場合は、コピー紙単独の分別回収と再生工場
への輸送が必要であり、特殊なリサイクル工程が必要と
なっていた。さらに、オフィス内では機密保持のために
シュレッダーを使用することが多く、手間、騒音などの
問題がある上に廃棄物が嵩高になり、紙の繊維が裁断さ
れるためにリサイクルそのものが非常に難しくなってい
た。
In recent years, the consumption of paper in offices has been increasing year by year, and it is an urgent task to reuse copy paper from the standpoint of protecting the global environment including forest protection. There is a situation. However, when manufacturing recycled paper, it is necessary to separately collect copy paper and transport it to a recycling factory, which requires a special recycling process. Furthermore, in offices, shredders are often used for confidentiality, and there are problems such as labor and noise, bulky waste, and paper fibers are cut, making recycling very difficult. Was becoming.

【0006】また、剥離液を用いる装置は、リサイクル
速度が毎分3枚(A4版)程度と遅く、剥離液として有
機溶剤を使用する必要があった。さらに、レーザ発振器
を用いた装置においては、従来の技術のように連続発振
方式のレーザ発振器から出力されるパルス光ではピーク
パワーが小さすぎて光衝撃効果やマイクロ除去加工がで
きないため、トナーを完全に除去しようとすると紙の表
層部分も損傷してしまい、紙面が滑らかでなくなった
り、再びコピーした場合に鮮明なコピーができないとい
う問題があった。
Further, the apparatus using the stripping solution has a slow recycling rate of about 3 sheets per minute (A4 size), and it is necessary to use an organic solvent as the stripping solution. Further, in the device using the laser oscillator, the pulse power output from the continuous oscillation type laser oscillator as in the conventional technique has too small a peak power to perform the optical shock effect or the micro-removal processing, so that the toner is completely removed. If it is tried to remove it, the surface layer of the paper will be damaged, the paper surface will not be smooth, and if copying again, there is a problem that a clear copy cannot be made.

【0007】本発明は、上記の従来技術における課題を
解決するためになされたものであり、その目的は、コピ
ー済用紙を高速再生し、再度鮮明なコピーをすることを
可能とするレーザ光照射を用いたコピー用紙再生装置を
提供することである。
The present invention has been made in order to solve the above-mentioned problems in the prior art, and its purpose is to irradiate a laser beam capable of reproducing a copied sheet at a high speed and making a clear copy again. It is to provide a copy sheet reproducing device using the.

【0008】[0008]

【課題を解決するための手段】本発明は、コピー済用紙
上のトナーを除去し、コピー用紙として再生するコピー
用紙再生装置において、前記コピー済用紙上のトナーが
脆性破壊可能な温度まで加熱可能な加熱手段と、前記ト
ナーが脆性破壊可能な加熱状態においてパルス幅が 100
μs以下でパワー密度が少くとも106 W/cm2 以上のレ
ーザ光を照射するレーザ光照射手段と、前記レーザ光照
射により飛散したトナーをアシストガスで除去するアシ
ストガス供給手段とを備えて成ることを特徴とする
SUMMARY OF THE INVENTION The present invention is a copy sheet reproducing apparatus for removing toner on a copied sheet and reproducing it as a copy sheet, which can heat the toner on the copied sheet to a temperature at which brittle fracture is possible. And a pulse width of 100 when the toner is brittle and breakable.
a laser beam irradiating means for irradiating a laser beam with a power density of at least 10 6 W / cm 2 or more for μs or less, and an assist gas supplying means for removing the toner scattered by the laser beam irradiation with an assist gas. Characterized by

【0009】[0009]

【作用】以上の構成により、コピー済用紙のトナーを脆
性破壊する温度まで加熱してから高パルス,短パルスの
所定レーザ光を照射して、アシストガスにより飛散した
トナーを吹き飛ばす。これによりコピー済用紙の高速再
生を可能とする。
With the above construction, the toner of the copied paper is heated to a temperature at which it brittlely destroys, and then a predetermined laser beam of high pulse or short pulse is irradiated to blow off the toner scattered by the assist gas. This enables high-speed reproduction of copied paper.

【0010】[0010]

【実施例】以下、本発明によるレーザ紙再生装置におい
てTEA−CO2 レーザを用いた実施例について図面に
基づき説明する。図1に本発明の第1の実施例のレーザ
紙再生装置の全体構成図を示す。使用済コピー1は紙送
り駆動部2を通し加熱ローラー9に送られ、80℃以上の
トナーが脆性破壊する温度まで加熱され、この加熱時に
レーザ発振器3から出力された所定のエネルギーのレー
ザ光は、レンズシステム4により所定のパワー密度とな
るサイズに変換されコピー紙に照射される。この際、レ
ーザ光は、連続発振方式のパルス光とは異なり、図2の
ハッチング領域に示されるようにパルス幅が 100マイク
ロ秒以下で、そのピークパワー密度は、少なくとも106
W/cm2 以上の高ピーク・短パルス光であるため、マイ
クロ除去加工が可能となり、蒸発加工プロセス以上に紙
の表層部分を損傷することなくコピー紙上のトナーは、
レーザ光の吸収による光衝撃効果により除去される。こ
の時、トナーはアシストガス5により吹き飛ばされ、紙
送り駆動部2により再度コピーが可能な再生紙6として
出力される。
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment using a TEA-CO 2 laser in a laser paper recycling apparatus according to the present invention will be described below with reference to the drawings. FIG. 1 shows an overall configuration diagram of a laser paper recycling apparatus according to a first embodiment of the present invention. The used copy 1 is sent to the heating roller 9 through the paper feed drive unit 2 and heated to a temperature at which the toner is brittle and destroyed at 80 ° C. or higher, and the laser light of a predetermined energy output from the laser oscillator 3 at this heating time is emitted. The lens system 4 converts the size to a predetermined power density and irradiates the copy paper. At this time, the laser light has a pulse width of 100 microseconds or less and a peak power density of at least 10 6 as shown in the hatched area in FIG.
Since it has a high peak / short pulse light of W / cm 2 or more, micro-removal processing is possible, and the toner on the copy paper does not damage the surface layer of the paper more than the evaporation processing process.
It is removed by the light shock effect due to the absorption of laser light. At this time, the toner is blown off by the assist gas 5, and is output as recycled paper 6 that can be copied again by the paper feed drive unit 2.

【0011】光源用のレーザとしては、TEA−CO2
レーザを例に説明したが、エキシマレーザやYAGレー
ザなど、トナーを除去するための光衝撃効果を生じさせ
るレーザであれば同様の効果が得られる。
As a laser for the light source, TEA-CO 2
Although a laser has been described as an example, the same effect can be obtained as long as it is a laser that produces a light shock effect for removing toner, such as an excimer laser or a YAG laser.

【0012】本装置は、パルスレーザの繰り返し運転周
波数を大きくすれば、コピー紙再生処理速度を増すこと
が可能であり、高速紙再生装置を提供することができ
る。また、再生紙をコピー用紙として再利用することに
より森林保護に貢献し、有機溶剤など有害物質を使用し
ないため、地球環境に優しい紙再生装置を実現すること
ができる。さらに、紙再生処理を夜間にまとめて行え
ば、夜間電力の有効利用にも寄与できる。
This apparatus can increase the copy paper reproduction processing speed by increasing the repetition operating frequency of the pulse laser, and can provide a high-speed paper reproduction apparatus. Further, by recycling recycled paper as copy paper, it contributes to forest protection, and since no harmful substances such as organic solvents are used, it is possible to realize a paper recycling apparatus that is friendly to the global environment. Furthermore, if the paper recycling process is performed at night, it can contribute to the effective use of nighttime power.

【0013】以下、本発明によるレーザ紙再生装置の他
の実施例を図面に基づき説明する。尚、代表的な実施例
と同一機能を有する部材については、同一の符号を付し
説明は省略する。
Another embodiment of the laser paper recycling apparatus according to the present invention will be described below with reference to the drawings. It should be noted that members having the same functions as those in the representative embodiment are designated by the same reference numerals and the description thereof will be omitted.

【0014】図3に本発明の第2の実施例のレーザ紙再
生装置の全体構成図を示す。本実施例では、レーザ照射
によりトナーを除去した後、コピー紙面を十分に滑らか
にするために、後処理機構8において水分を吸湿し、加
熱ローラー9により乾燥および紙の表面を整え、再度鮮
明なコピーが可能な再生紙6として出力される。
FIG. 3 shows the overall configuration of a laser paper recycling apparatus according to the second embodiment of the present invention. In this embodiment, after the toner is removed by laser irradiation, in order to make the copy paper surface sufficiently smooth, the post-processing mechanism 8 absorbs moisture, the heating roller 9 dries the surface of the paper and straightens the paper surface again. It is output as recycled paper 6 that can be copied.

【0015】本実施例のように、後処理機構8を追加す
ることにより、前記実施例よりも使用済みコピーの濃淡
によらず、再コピーの際常に鮮明なコピーを達成する再
生紙を安定的に供給することができる。
By adding the post-processing mechanism 8 as in the present embodiment, the recycled paper which always achieves a sharp copy when re-copying is more stable than in the above-described embodiment, regardless of the density of the used copy. Can be supplied to.

【0016】図4は、図3に示した構成にレーザ照射前
に水分を吸湿させる前処理機構7を追加した第3の実施
例である。本実施例の構成とすれば、使用済みコピー1
に折り目やしわがあった場合にも紙再生プロセスをスム
ーズに行うことができる。
FIG. 4 shows a third embodiment in which a pretreatment mechanism 7 for absorbing moisture before laser irradiation is added to the structure shown in FIG. According to the configuration of this embodiment, the used copy 1
The paper recycling process can be performed smoothly even when there are folds or wrinkles.

【0017】図5は、レーザ発振器3から出力されるレ
ーザ光が、レーザ照射位置において適度なパワー密度と
なるように事前設計されているため、伝送光学系におい
てレンズシステムが必要ない第4の実施例を示してい
る。また、従来の実施例のようにレーザ照射後の紙面の
反射率をレーザ発振器にフィードバックする必要もな
い。紙再生のプロセスについては、前述の実施例と同様
である。
In FIG. 5, since the laser light output from the laser oscillator 3 is predesigned so as to have an appropriate power density at the laser irradiation position, a lens system is not required in the transmission optical system according to the fourth embodiment. An example is shown. Further, unlike the conventional example, it is not necessary to feed back the reflectance of the paper surface after the laser irradiation to the laser oscillator. The paper recycling process is the same as in the above-described embodiment.

【0018】前述のレーザ紙再生装置にコピー機(複写
機)を兼ね備えることにより、1台でコピーとコピー紙
再生の両機能を備えた、万能複写機を提供することがで
きる。
By combining the above-mentioned laser paper reproducing apparatus with a copying machine (copying machine), it is possible to provide a universal copying machine having both functions of copying and copying paper reproduction.

【0019】[0019]

【発明の効果】以上のように本発明によれば、使用済み
コピー用紙をオフィス内で高速再生し、再度鮮明なコピ
ーを可能とし、森林保護をはじめとする地球環境保護に
貢献するコピー用紙再生装置を提供することができる。
As described above, according to the present invention, used copy paper can be reproduced at high speed in the office to make clear copies again, and copy paper reproduction that contributes to global environmental protection such as forest protection. A device can be provided.

【図面の簡単な説明】[Brief description of drawings]

【図1】本発明の第1の実施例のコピー用紙再生装置の
全体構成図
FIG. 1 is an overall configuration diagram of a copy sheet reproducing apparatus according to a first embodiment of the present invention.

【図2】照射レーザ光特性と再生加工との関係図[Fig. 2] Relationship between irradiation laser light characteristics and reproduction processing

【図3】本発明の第2の実施例のコピー用紙再生装置の
全体構成図
FIG. 3 is an overall configuration diagram of a copy sheet reproducing apparatus according to a second embodiment of the present invention.

【図4】本発明の第3の実施例のコピー用紙再生装置の
全体構成図
FIG. 4 is an overall configuration diagram of a copy sheet reproducing apparatus according to a third embodiment of the present invention.

【図5】本発明の第4の実施例のコピー用紙再生装置の
全体構成図
FIG. 5 is an overall configuration diagram of a copy sheet reproducing apparatus according to a fourth embodiment of the present invention.

【図6】従来の再生紙生産のリサイクルフロー図[Figure 6] Recycle flow diagram for conventional recycled paper production

【図7】トナー像を熱化学的に剥離除去する工程の例解
FIG. 7 is an exemplary illustration of a process of peeling and removing a toner image thermochemically.

【図8】従来のコピー用紙再生装置の全体構成図FIG. 8 is an overall configuration diagram of a conventional copy paper recycling apparatus.

【符号の説明】[Explanation of symbols]

1…使用済コピー用紙 6…再生紙 2…紙送り駆動部 7…前処理機構 3…レーザ発振器 8…後処理機構 4…レンズシステム 9…加熱ローラー 5…アシストガス 1 ... Used copy paper 6 ... Recycled paper 2 ... Paper feed drive unit 7 ... Pretreatment mechanism 3 ... Laser oscillator 8 ... Posttreatment mechanism 4 ... Lens system 9 ... Heating roller 5 ... Assist gas

Claims (3)

【特許請求の範囲】[Claims] 【請求項1】 コピー済用紙上のトナーを除去し、コピ
ー用紙として再生するコピー用紙再生装置において、前
記コピー済用紙上のトナーが脆性破壊可能な温度まで加
熱可能な加熱手段と、前記トナーが脆性破壊可能な加熱
状態においてパルス幅が 100μs以下でパワー密度が少
くとも106 W/cm2 以上のレーザ光を照射するレーザ光
照射手段と、前記レーザ光照射により飛散したトナーを
アシストガスで除去するアシストガス供給手段とを備え
て成ることを特徴とするコピー用紙再生装置。
1. A copy sheet reproducing apparatus that removes toner on copied sheets and reproduces them as copy sheets, and a heating unit capable of heating the toner on the copied sheets to a temperature at which brittle fracture is possible. Laser light irradiation means for irradiating a laser beam with a pulse width of 100 μs or less and a power density of at least 10 6 W / cm 2 or more in a brittle breakable heating state, and the toner scattered by the laser beam irradiation is removed by an assist gas. An apparatus for supplying copy gas, comprising:
【請求項2】 前記トナーをレーザ光照射により除去さ
れた被コピー再生用紙に水分を吸湿させた後加熱、乾燥
させるとともにこの用紙面を滑らかに整える手段を備え
る請求項1記載のコピー用紙再生装置。
2. The copy sheet reproducing apparatus according to claim 1, further comprising means for absorbing moisture to the copy-reproduced sheet from which the toner has been removed by irradiating the laser beam, and then heating and drying the sheet and smoothing the sheet surface. .
【請求項3】 前記コピー済用紙に前記レーザ光照射を
行う以前に、この用紙に水分を吸湿させた後この用紙面
を滑らかに整える手段を備える請求項2記載のコピー用
紙再生装置。
3. The copy sheet reproducing apparatus according to claim 2, further comprising means for absorbing the water content of the copied sheet before irradiating the copied sheet with the laser beam and then smoothing the surface of the sheet.
JP18446194A 1994-08-05 1994-08-05 Recovering device for copying form Pending JPH0850431A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP18446194A JPH0850431A (en) 1994-08-05 1994-08-05 Recovering device for copying form

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP18446194A JPH0850431A (en) 1994-08-05 1994-08-05 Recovering device for copying form

Publications (1)

Publication Number Publication Date
JPH0850431A true JPH0850431A (en) 1996-02-20

Family

ID=16153564

Family Applications (1)

Application Number Title Priority Date Filing Date
JP18446194A Pending JPH0850431A (en) 1994-08-05 1994-08-05 Recovering device for copying form

Country Status (1)

Country Link
JP (1) JPH0850431A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2005292747A (en) * 2004-03-31 2005-10-20 Haruo Ibori Used paper sheet regenerating device and used paper sheet regenerating method
CN100381942C (en) * 2003-11-26 2008-04-16 珠海天威飞马打印耗材有限公司 Supervisory instrument and method for processing box page output and page powder consumption
JP2012228874A (en) * 2011-04-22 2012-11-22 Xerox Corp Process and apparatus for recyclable medium by image removal
US8320811B2 (en) 2009-04-01 2012-11-27 Sharp Kabushiki Kaisha Image recording medium, image recording medium reusing apparatus, image forming apparatus using the same and image recording medium reusing method

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN100381942C (en) * 2003-11-26 2008-04-16 珠海天威飞马打印耗材有限公司 Supervisory instrument and method for processing box page output and page powder consumption
JP2005292747A (en) * 2004-03-31 2005-10-20 Haruo Ibori Used paper sheet regenerating device and used paper sheet regenerating method
JP4526863B2 (en) * 2004-03-31 2010-08-18 株式会社四国総合研究所 Used paper recycling apparatus and used paper recycling method
US8320811B2 (en) 2009-04-01 2012-11-27 Sharp Kabushiki Kaisha Image recording medium, image recording medium reusing apparatus, image forming apparatus using the same and image recording medium reusing method
JP2012228874A (en) * 2011-04-22 2012-11-22 Xerox Corp Process and apparatus for recyclable medium by image removal

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