JPH05178406A - Shelf device - Google Patents
Shelf deviceInfo
- Publication number
- JPH05178406A JPH05178406A JP34164491A JP34164491A JPH05178406A JP H05178406 A JPH05178406 A JP H05178406A JP 34164491 A JP34164491 A JP 34164491A JP 34164491 A JP34164491 A JP 34164491A JP H05178406 A JPH05178406 A JP H05178406A
- Authority
- JP
- Japan
- Prior art keywords
- load
- shelf
- plate portion
- detecting device
- display device
- 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
Links
Landscapes
- Warehouses Or Storage Devices (AREA)
Abstract
Description
【０００１】[0001]
【産業上の利用分野】本発明は、フォークリフトにより
パレットを介して荷の入出庫を行う枠組み棚や、自動倉
庫用棚などの棚装置に関するものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a shelf device such as a frame shelf for loading and unloading a load via a pallet by a forklift, and an automatic warehouse shelf.
【０００２】[0002]
【従来の技術】従来、たとえば枠組み棚としては実開昭
64年9282号公報の構成が提供されている。すなわち従来
構成では、４本の縦枠を立設し、そして前後の縦枠間を
前後枠や斜補強材を介して連結するとともに、左右の縦
枠間を左右材を介して連結し、さらに前後の左右材間を
横補強材で連結している。この従来構成によると、たと
えば作業者は、フォークリフトを操縦することで、左右
材と横補強材とからなる荷支持体上に対して、パレット
を介して荷の入出庫を行える。2. Description of the Related Art Conventionally, for example, as a frame shelf, it has been actually opened.
The structure of the 9284 publication is provided. That is, in the conventional configuration, four vertical frames are erected, and the front and rear vertical frames are connected via the front and rear frames and the diagonal reinforcing members, and the left and right vertical frames are connected via the left and right members. The front and rear left and right members are connected by lateral reinforcements. According to this conventional configuration, for example, an operator can operate the forklift to load and unload a load on the load support body including the left and right members and the lateral reinforcing member via the pallet.
【０００３】[0003]
【発明が解決しようとする課題】上記した従来構成によ
ると、パレット上の荷の重量が大であつたとき、棚装置
に過負荷が掛かり、特に縦枠と荷支持体の連結部など各
部の破損を招くことになり、荷が落下するなど危険であ
る。According to the above-mentioned conventional configuration, when the weight of the load on the pallet is large, the shelving device is overloaded, and particularly, the connecting portions of the vertical frame and the load support are not connected. It will be damaged and the load may be dropped.
【０００４】本発明の目的とするところは、荷重が設定
した許容値を越えたことを表示し得る棚装置を提供する
点にある。An object of the present invention is to provide a shelving device capable of displaying that the load exceeds a set allowable value.
【０００５】[0005]
【課題を解決するための手段】上記目的を達成すべく本
発明の棚装置は、支柱間に荷支持体を配設した棚装置に
おいて、前記荷支持体に、荷重検出装置と、この荷重検
出装置に接続した表示装置とを設けている。In order to achieve the above object, a shelf device of the present invention is a shelf device in which a load support is disposed between columns, and the load support is provided on the load support and the load detection device is provided on the load support. And a display device connected to the device.
【０００６】[0006]
【作用】かかる本発明の構成によると、荷支持体上に載
置した荷の荷重は荷重検出装置により検出され、そして
検出値が設定した許容値を越えたことを表示装置が表示
して作業者に認識させ得る。According to the structure of the present invention, the load of the load placed on the load support is detected by the load detecting device, and the display device indicates that the detected value exceeds the set allowable value. Can be recognized by the person.
【０００７】[0007]
【実施例】以下に本発明の棚装置の一実施例である枠組
み棚を図１〜図６に基づいて説明する。DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A frame shelf which is an embodiment of the shelf device of the present invention will be described below with reference to FIGS.
【０００８】図５、図６において１は枠組み棚で、前後
ならびに左右にそれぞれ複数（実施例では前後２本でか
つ左右３本で示す。）配設した支柱10と、これら支柱10
の前後間を連結するラチス20と、前記支柱10の左右間を
連結するビーム30と、前後で対向したビーム30間に配設
したサブビーム60と、前記支柱10の下端に取り付けた脚
装置５などから構成される。In FIGS. 5 and 6, reference numeral 1 designates a frame shelf, and a plurality of columns 10 (two in the front and two in the example and three in the left and right in the embodiment) arranged in front and back and left and right, and these columns 10 respectively.
Lattice 20 for connecting the front and rear of the column, a beam 30 for connecting the left and right of the column 10, a sub-beam 60 arranged between the beams 30 facing each other in the front and rear, a leg device 5 attached to the lower end of the column 10, etc. Composed of.
【０００９】図１〜図６に示すように前記支柱10は、外
板部11と、この外板部11の外端から直角状で内方に延び
る左右一対の側板部12と、これら側板部12の後端から相
対向する方向に接近する左右一対の内板部13と、これら
内板部13の内端から直角状で内方に延びる左右一対の連
結板部14とからなり、両連結板部14間に挿入用スリット
15を有する状態で型材状に一体形成される。As shown in FIGS. 1 to 6, the column 10 includes an outer plate portion 11, a pair of right and left side plate portions 12 extending inward at right angles from the outer end of the outer plate portion 11, and these side plate portions. A pair of left and right inner plate parts 13 approaching each other from the rear end of the inner plate part 13 in opposite directions, and a pair of left and right connecting plate parts 14 extending inward at right angles from the inner ends of the inner plate parts 13, Slit for insertion between plate parts 14
It is integrally formed in the shape of a mold in the state of having 15.
【００１０】前記外板部11の幅方向の中央部には内方へ
の凹入部16が上下方向で全長に形成され、そして前記外
板部11における凹入部16の両側と前記内板部13にはコネ
クターピン（後述する）用のピン孔17が、上下方向で所
定ピッチ置きに複数形成されている。また両連結板部14
の上下方向の所定の位置には連結孔18が形成されてい
る。An inward recessed portion 16 is formed over the entire length in the vertical direction at the center of the outer plate portion 11 in the width direction, and both sides of the recessed portion 16 of the outer plate portion 11 and the inner plate portion 13 are formed. A plurality of pin holes 17 for connector pins (which will be described later) are formed at predetermined pitches in the vertical direction. Also, both connecting plate parts 14
A connecting hole 18 is formed at a predetermined position in the vertical direction.
【００１１】前記ラチス20はＣ型レール状であって、両
端の相対向板間に亘って連結孔21が形成されている。そ
して前記支柱10を、その挿入用スリット15を前後方向に
おいて相対向させた状態で、水平状または傾斜状とした
前記ラチス20の両端を前記挿入用スリット15に差し込ん
だのち、前記連結孔21，18に亘ってリベット22を作用さ
せることで、前後の支柱10と複数のラチス20とを一体化
し得る。The lattice 20 has a C-shaped rail shape, and a connecting hole 21 is formed between the opposing plates at both ends. Then, the support column 10, with the insertion slits 15 facing each other in the front-rear direction, after inserting both ends of the lattice 20 that is horizontal or inclined into the insertion slits 15, the connection hole 21, By operating the rivets 22 over 18, the front and rear columns 10 and the plurality of lattices 20 can be integrated.
【００１２】前記ビーム30は、帯板を方形筒状に折り曲
げ成形することで得られる。すなわちビーム30は、上板
部31と、この上板部31の前後端から直角状で下方に延び
る前板部32ならびに後板部33と、前板部32の下端から直
角状で後方に延びる前位下板部34と、後板部33の下端か
ら直角状で前方に延びる後位下板部35と、この後位下板
部35の前端から直角状で上方に延びる係止板部36と、前
位下板部34の後端から直角状で上方に延びたのち下方へ
湾曲したフック状に形成されかつ前記係止板部36に対し
て上方から係合自在な被係止板部37とにより方形筒状に
一体形成される。The beam 30 is obtained by bending a strip plate into a rectangular tube shape. That is, the beam 30 includes an upper plate portion 31, a front plate portion 32 and a rear plate portion 33 that extend downward from the front and rear ends of the upper plate portion 31 at a right angle, and a rear portion from the lower end of the front plate portion 32 at a right angle. The front lower plate portion 34, the rear lower plate portion 35 that extends forward from the lower end of the rear plate portion 33 at a right angle, and the locking plate portion 36 that extends upward at a right angle from the front end of the rear lower plate portion 35. And a locked plate portion that extends upward from the rear end of the front lower plate portion 34 at a right angle and is bent downward and is engageable with the locking plate portion 36 from above. Together with 37, they are integrally formed into a rectangular tubular shape.
【００１３】前記上板部31は、その前半分を上位の支持
部31ａとし、後半分を下位の受け部31ｂとした段状に形
成してある。前記支持部31ａはパレット２を介して荷３
を支持するものであり、以て前後一対のビーム30により
荷支持体を構成する。また前記受け部31ｂは前記サブビ
ーム60を受け止めるものである。そして前記ビーム30に
は、その前板部32ならびに後板部33の上下方向の中央部
に取付部の一例である取付用孔38が形成され、この取付
用孔38は長さ方向において所定ピッチ置きで複数形成さ
れる。さらに前記受け部31ｂから後板部33の上位に亘っ
ては、平行した２本を一組とした切り欠き39が所定ピッ
チ置きに複数組形成されている。The upper plate portion 31 is formed in a stepped shape with a front half thereof as an upper supporting portion 31a and a rear half thereof as a lower receiving portion 31b. The support portion 31a is connected to the load 3 via the pallet 2.
The pair of front and rear beams 30 constitutes a load supporting body. The receiving portion 31b receives the sub beam 60. The beam 30 is provided with mounting holes 38, which are an example of mounting portions, in the vertical central portions of the front plate portion 32 and the rear plate portion 33, and the mounting holes 38 have a predetermined pitch in the longitudinal direction. Plural pieces are formed by placing. Further, a plurality of sets of notches 39, each of which is a set of two parallel, are formed at a predetermined pitch from the receiving part 31b to the upper part of the rear plate part 33.
【００１４】前記ビーム30の両端部には、それぞれ連結
用部材40が一体化してある。すなわち連結用部材40は、
外板部11に当て付け自在な前板41と、側板部12に当て付
け自在な外側板42と、凹入部16内に嵌入自在な内側板43
とにより型材状に形成され、前板41の上下二箇所に係止
用切欠き44を形成するとともに、これら係止用切欠き44
間にピン孔45を形成している。さらに外側板42の後端縁
には上下方向の係止部46が上下二箇所に形成されてい
る。そして外側板42の外面に前記ビーム30の端部を溶接
により連結している。A connecting member 40 is integrated with both ends of the beam 30. That is, the connecting member 40 is
A front plate 41 freely attachable to the outer plate part 11, an outer plate 42 freely attachable to the side plate part 12, and an inner plate 43 freely fit in the recessed part 16.
Is formed in a shape of a material by the above, and notches 44 for locking are formed at two upper and lower positions of the front plate 41, and the notches 44 for locking are formed.
A pin hole 45 is formed between them. Further, vertical locking portions 46 are formed on the rear end edge of the outer plate 42 at two positions in the vertical direction. The end of the beam 30 is connected to the outer surface of the outer plate 42 by welding.
【００１５】前記支柱10に連結用部材40を固定させるた
めのコネクターピン50は、両ピン孔17間に亘って後方か
ら差込み自在な上下一対の差込みピン部51を有し、そし
て差込みピン部51の内端から左右方向に折曲した係止ピ
ン部52を有するとともに、係止ピン部52の遊端間を連結
する上下方向の連結ピン部53を有し、さらに差込みピン
部51の内端で相対向する面間を連結する上下方向の補強
ピン部54を有する。The connector pin 50 for fixing the connecting member 40 to the column 10 has a pair of upper and lower insertion pin portions 51 which can be inserted from the rear between the both pin holes 17, and the insertion pin portion 51. Has a locking pin portion 52 that is bent in the left-right direction from the inner end, and a vertical connecting pin portion 53 that connects the free ends of the locking pin portion 52, and the inner end of the insertion pin portion 51. And has a reinforcing pin portion 54 in the up-and-down direction that connects the surfaces facing each other.
【００１６】そして支柱10に対する連結用部材40の固定
は、係止用切欠き44を差込みピン部51の前方突出端に外
嵌させたのち、係止用切欠き44の上下方向のゆとりを利
用して連結用部材40を下降させる。これにより係止部46
を係止ピン部52に上方から係合させたのち、合致したピ
ン孔17，45間に亘って抜け止めピン55を差込むことで行
える。To fix the connecting member 40 to the column 10, the locking notch 44 is externally fitted to the front protruding end of the insertion pin portion 51, and then the vertical clearance of the locking notch 44 is used. Then, the connecting member 40 is lowered. As a result, the locking portion 46
After engaging with the locking pin portion 52 from above, the retaining pin 55 can be inserted between the matched pin holes 17 and 45.
【００１７】前記サブビーム60は下面開放のチャンネル
状であって、その側板部の両端には前記切り欠き39に上
方から差し込み自在な係止片61が形成され、その際に天
板部の両端は前記受け部31ｂに対する載置部62に形成さ
れる。The sub-beam 60 has a channel shape with an open bottom surface, and locking pieces 61 which can be inserted into the notches 39 from above are formed at both ends of the side plate portion, and at this time, both ends of the top plate portion are It is formed on the mounting portion 62 for the receiving portion 31b.
【００１８】前記脚装置５は、前記支柱10の下端に結合
自在なブラケット６と、このブラケット６の下方に位置
する着地部７と、これらブラケット６と着地部７とを連
結する高さ調整具８とからなる。ここで着地部７は平面
視で長形状であり、前記高さ調整具８の連結部から離れ
た遊端側をアンカーボルト連結部９としている。The leg device 5 includes a bracket 6 that can be connected to the lower end of the column 10, a landing portion 7 located below the bracket 6, and a height adjusting tool that connects the bracket 6 and the landing portion 7. 8 and. Here, the landing portion 7 has an elongated shape in a plan view, and the free end side of the height adjusting tool 8 which is away from the connecting portion is an anchor bolt connecting portion 9.
【００１９】前後一対のビーム30により構成される荷支
持体には、荷重検出装置と、この荷重検出装置に接続し
た表示装置とが設けられる。すなわち前部のビーム30内
の長さ方向の中央部分において、その支持部31ａの内面
には、荷重検出装置の一例である歪み検出装置70が取り
付けられている。そして前板部32の外面には表示装置71
が配設され、この表示装置71は、そのブラケット部72に
形成した貫通孔73を前記取付孔38に合致させた状態で、
貫通孔73から取付孔38へと樹脂リベット74を作用させる
ことによりビーム30側に固定される。The load support constituted by the pair of front and rear beams 30 is provided with a load detecting device and a display device connected to the load detecting device. That is, a strain detecting device 70, which is an example of a load detecting device, is attached to the inner surface of the support portion 31a at the central portion of the front beam 30 in the longitudinal direction. The display device 71 is provided on the outer surface of the front plate portion 32.
Is provided, the display device 71 has a through hole 73 formed in the bracket portion 72 thereof aligned with the mounting hole 38,
By fixing the resin rivet 74 from the through hole 73 to the mounting hole 38, the resin rivet 74 is fixed to the beam 30 side.
【００２０】さらに後板部33の外面には変換器75が配設
され、この変換器75は、そのブラケット部76に形成した
貫通孔77を前記取付孔38に合致させた状態で、貫通孔77
から取付孔38へと樹脂リベット78を作用させることによ
りビーム30側に固定される。そして変換器75は配線79，
80により歪み検出装置70と表示装置71に接続し、また変
換器75には外部からの給電線81が接続している。Further, a converter 75 is arranged on the outer surface of the rear plate portion 33, and the converter 75 has a through hole 77 formed in the bracket portion 76 thereof aligned with the mounting hole 38. 77
The resin rivet 78 acts on the mounting hole 38 to fix it to the beam 30 side. And the converter 75 has wiring 79,
The strain detection device 70 and the display device 71 are connected by 80, and the feeder 75 from the outside is connected to the converter 75.
【００２１】上記実施例の枠組み棚１において、フォー
クリフトによる入庫作業は、前後のビーム30における支
持部31ａ間にパレット２を載置することで行える。その
際にパレット２側の荷重によってビーム30は、その中央
部が下位になるように下方へ撓むことになる。この撓み
量はパレット２側の荷重の大小によって変化することに
なる。In the frame shelf 1 of the above-described embodiment, the loading operation by the forklift can be performed by placing the pallet 2 between the support portions 31a of the front and rear beams 30. At this time, the beam 30 is bent downward by the load on the pallet 2 side so that the central portion of the beam 30 becomes lower. This amount of bending changes depending on the magnitude of the load on the pallet 2 side.
【００２２】このようなビーム30の撓みは歪み検出装置
70によって検出され、その検出信号が配線79を介して交
換器75に与えられる。そして検出信号は交換器75におい
て指示信号に交換され、配線80を介して表示装置71に与
えられる。これにより表示装置71には荷重が表示され
る。なお表示方法としては、荷重を数値で表示し、そし
て設定した許容値を越えたときにランプを点灯したりブ
ザーを鳴らす方法や、数値は表示せず、許容値を越えた
ときにランプを点灯したりブザーを鳴らす方法などが採
用される。Such bending of the beam 30 is a strain detecting device.
The signal is detected by 70, and the detection signal is given to the exchanger 75 via the wiring 79. Then, the detection signal is exchanged with the instruction signal in the exchange 75 and is given to the display device 71 through the wiring 80. As a result, the load is displayed on the display device 71. In addition, as a display method, the load is displayed as a numerical value, and the lamp is turned on or the buzzer sounds when the set allowable value is exceeded, or the numerical value is not displayed and the lamp is turned on when the allowable value is exceeded. The method of doing or sounding the buzzer is adopted.
【００２３】そして許容値を越えことを認識した作業者
は、直ちに出庫するなど補正することで、枠組み棚１に
各部の破損を防止し得る。なお許容値は枠組み棚１の構
成物や構成状態に基づいて設定されるものであり、そし
て交換器75の操作により任意に調整し得る。Then, the worker who recognizes that the allowable value is exceeded can prevent damage to each part of the frame shelf 1 by making a correction such as immediately leaving. The allowable value is set on the basis of the constituents and the constitutional state of the framework shelf 1, and can be arbitrarily adjusted by operating the exchanger 75.
【００２４】上記実施例では荷重検出装置として歪み検
出装置70を採用したが、これは圧力荷重計など他の形式
を採用し得る。たとえば図７に示すように、前位下板部
34上にタッチ式検出装置85を設け、その作用部86を支持
部31ａの下面に接近して配設した形式でもよい。Although the strain detecting device 70 is adopted as the load detecting device in the above-mentioned embodiment, other types such as a pressure load meter may be adopted. For example, as shown in FIG. 7, the front lower plate portion
The touch type detection device 85 may be provided on the 34, and the action portion 86 thereof may be disposed close to the lower surface of the support portion 31a.
【００２５】なおビーム30は連結用部材40を介して支柱
10に連結しているが、これは支柱10に対してビーム30を
直接に溶接するなど、他の構成でもよい。さらにビーム
30として方形筒状のものを使用しているが、これは断面
がΣ形状など他の形状であってもよく、この場合に歪み
検出装置70や交換器75などの配設を容易に行えるととも
に、撓みは敏感となる。そして棚装置として枠組み棚１
を示しているが、これは自動倉庫用棚など他の棚装置で
あってもよい。The beam 30 is supported by a connecting member 40.
Although connected to 10, this could be other configurations, such as welding the beam 30 directly to the stanchion 10. Further beam
Although a rectangular tubular shape is used as 30, the cross section may have another shape such as a Σ shape, and in this case, the strain detection device 70, the exchanger 75, etc. can be easily arranged. , Flexure becomes sensitive. And frame shelf 1 as a shelf device
However, this may be another shelving device such as an automated warehouse shelf.
【００２６】[0026]
【発明の効果】上記構成の本発明によると、荷支持体上
に載置した荷の荷重は荷重検出装置により検出でき、そ
して検出値が設定した許容値を越えたことを表示装置が
表示して作業者に認識させることができる。これにより
直ちに出庫するなど補正することで、棚装置の各部の破
損を防止できるとともに、入出庫作業を常に安全に行う
ことができる。According to the present invention having the above structure, the load of the load placed on the load support can be detected by the load detecting device, and the display device indicates that the detected value exceeds the set allowable value. Can be recognized by the operator. As a result, it is possible to prevent damage to each part of the shelving device by performing correction such as immediately leaving the warehouse, and it is possible to always carry out the warehouse operation safely.
【図１】本発明の一実施例を示し、ビーム部分の縦断側
面図である。FIG. 1 is a vertical sectional side view of a beam portion according to an embodiment of the present invention.
【図２】同ビーム部分の正面図である。FIG. 2 is a front view of the beam portion.
【図３】同ビーム部分の斜視図である。FIG. 3 is a perspective view of the beam portion.
【図４】同連結部材部分の平面図である。FIG. 4 is a plan view of the connecting member portion.
【図５】同枠組み棚の斜視図である。FIG. 5 is a perspective view of the same frame shelf.
【図６】同枠組み棚の正面図である。FIG. 6 is a front view of the same frame shelf.
【図７】本発明の別の実施例を示し、ビーム部分の縦断
側面図である。FIG. 7 is a vertical sectional side view of a beam portion according to another embodiment of the present invention.
１ 枠組み棚 ５ 脚装置 10 支柱 20 ラチス 30 ビーム 31ａ 支持部 32 前板部 38 取付用孔（取付部） 40 連結用部材 50 コネクターピン 60 サブビーム 70 歪み検出装置（荷重検出装置） 71 表示装置 75 交換器 1 Frame shelf 5 Leg device 10 Strut 20 Lattice 30 Beam 31a Support part 32 Front plate part 38 Mounting hole (mounting part) 40 Connecting member 50 Connector pin 60 Sub beam 70 Strain detection device (load detection device) 71 Display device 75 Replacement vessel
Claims (1)
いて、前記荷支持体に、荷重検出装置と、この荷重検出
装置に接続した表示装置とを設けたことを特徴とする棚
装置。1. A shelf device in which a load support is disposed between columns, wherein the load support is provided with a load detection device and a display device connected to the load detection device. ..
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34164491A JPH05178406A (en) | 1991-12-25 | 1991-12-25 | Shelf device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP34164491A JPH05178406A (en) | 1991-12-25 | 1991-12-25 | Shelf device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH05178406A true JPH05178406A (en) | 1993-07-20 |
Family
ID=18347691
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP34164491A Pending JPH05178406A (en) | 1991-12-25 | 1991-12-25 | Shelf device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH05178406A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834844A (en) * | 1987-05-26 | 1989-05-30 | Hoechst Aktiengesellschaft | Process for the selective additive correction of voids in copying layers |
| US4840709A (en) * | 1987-05-26 | 1989-06-20 | Hoechst Aktiengesellschaft | Single-stage electrochemical image-forming process for reproduction layers |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216802A (en) * | 1982-06-10 | 1983-12-16 | Kurihara Akiyoshi | Control shelf of article |
| JPS6188113A (en) * | 1984-10-05 | 1986-05-06 | Bijikon Kk | Goods shelf device |
-
1991
- 1991-12-25 JP JP34164491A patent/JPH05178406A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS58216802A (en) * | 1982-06-10 | 1983-12-16 | Kurihara Akiyoshi | Control shelf of article |
| JPS6188113A (en) * | 1984-10-05 | 1986-05-06 | Bijikon Kk | Goods shelf device |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4834844A (en) * | 1987-05-26 | 1989-05-30 | Hoechst Aktiengesellschaft | Process for the selective additive correction of voids in copying layers |
| US4840709A (en) * | 1987-05-26 | 1989-06-20 | Hoechst Aktiengesellschaft | Single-stage electrochemical image-forming process for reproduction layers |
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