JPS63102960A - Printer control circuit - Google Patents

Printer control circuit

Info

Publication number
JPS63102960A
JPS63102960A JP24740986A JP24740986A JPS63102960A JP S63102960 A JPS63102960 A JP S63102960A JP 24740986 A JP24740986 A JP 24740986A JP 24740986 A JP24740986 A JP 24740986A JP S63102960 A JPS63102960 A JP S63102960A
Authority
JP
Japan
Prior art keywords
paper
recording paper
control circuit
normal
paper feed
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.)
Granted
Application number
JP24740986A
Other languages
Japanese (ja)
Other versions
JPH0696301B2 (en
Inventor
Koichi Tomatsuri
戸祭 孝一
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.)
Hitachi Ltd
Original Assignee
Hitachi Ltd
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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP61247409A priority Critical patent/JPH0696301B2/en
Publication of JPS63102960A publication Critical patent/JPS63102960A/en
Publication of JPH0696301B2 publication Critical patent/JPH0696301B2/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B41PRINTING; LINING MACHINES; TYPEWRITERS; STAMPS
    • B41JTYPEWRITERS; SELECTIVE PRINTING MECHANISMS, i.e. MECHANISMS PRINTING OTHERWISE THAN FROM A FORME; CORRECTION OF TYPOGRAPHICAL ERRORS
    • B41J11/00Devices or arrangements  of selective printing mechanisms, e.g. ink-jet printers or thermal printers, for supporting or handling copy material in sheet or web form
    • B41J11/36Blanking or long feeds; Feeding to a particular line, e.g. by rotation of platen or feed roller
    • B41J11/42Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering
    • B41J11/46Controlling printing material conveyance for accurate alignment of the printing material with the printhead; Print registering by marks or formations on the paper being fed

Landscapes

  • Handling Of Sheets (AREA)
  • Handling Of Cut Paper (AREA)

Abstract

PURPOSE:To record normally and to improve the operationability, by detecting a marker on a recording paper and deciding whether it is a normal paper, and carrying out paper feed operation plural times when an error decision is made and a normal paper is not fed. CONSTITUTION:Mark detectors 7-1, 7-2 detect marks 8-1, 8-2 on a recording paper 6 and feed to a control circuit 9. The control circuit 9 decides whether it is a normal paper from the positions and shapes of the marks 8-1, 8-2 according to the outputs of a rotary amount detector 1 and mark detectors 7-1, 7-2 being fed simultaneously. If it is a normal paper, paper feed operation is continued and followed by printing operation, while when it is decided to be an abnormal paper, the paper feed operation is stopped and the paper is carried in reverse direction then paper feed operation is resumed. In such a manner, when it is decided to be an abnormal paper, paper feed operation is carried out automatically by plural times, and if it is decided to be a normal paper during said operation, paper feed operation is followed by printing operation. If it is decided to be an abnormal paper even if paper feed operation is carried out plural times, the recording paper 6 is carried in reverse direction and paper feed operation is stopped.

Description

【発明の詳細な説明】 〔腫業上の利用分野〕 本発明はプリンタの給紙ミスの少ないプリンタを提供す
るためのプリンタ制御回路である。
DETAILED DESCRIPTION OF THE INVENTION [Field of Medical Use] The present invention is a printer control circuit for providing a printer with fewer paper feeding errors.

C従来の技術〕 従来のプリンタは、実案公報昭55−49258号。C. Conventional technology] The conventional printer is the Utility Model Publication No. 1983-49258.

実案公報昭57−20560号等に記載のように、記録
紙を光学的あるいは機械的に検知する手段を給紙通路上
に設げ、記録紙の有無を検出し、記録紙が有る場合には
記録を行なうようになっていた。
As described in Utility Model Publication No. 57-20560, etc., a means for optically or mechanically detecting recording paper is provided on the paper feed path, detecting the presence or absence of recording paper, and detecting the presence of recording paper. was beginning to record.

〔発明が解決しようとする問題点〕[Problem that the invention seeks to solve]

上記従来技術は、専用記録紙の判別ということに配慮さ
れておらず、記録紙が使用するインクと相性の恋い材質
で出来ている場合には、記録面の品質の悪化や紙づまり
か起こるという問題があった。特にポリエステルコート
や発色剤の塗布などの特殊な表面処理を施した記録紙で
記録する場合には、表裏が逆になっても正常な記録がで
きないという問題がありた。
The above conventional technology does not take into account the identification of special recording paper, and if the recording paper is made of a material that is not compatible with the ink used, the quality of the recording surface may deteriorate or paper jams may occur. There was a problem. Particularly when recording with a recording paper that has been subjected to special surface treatments such as polyester coating or coating with a coloring agent, there is a problem in that normal recording cannot be performed even if the front and back sides are reversed.

本発明の目的は専用の記録紙を判定することにより正常
な記録を行い、しかも操作性の良いプリンタを実現する
ことにある。
SUMMARY OF THE INVENTION An object of the present invention is to realize a printer that performs normal recording by determining a dedicated recording paper and has good operability.

〔轡題点を解決するための手段〕[Means for solving problems]

上記目的は、記録上のマーカーを検出し専用紙の判定を
行うと共に、誤判定により正常紙が給紙されないのを複
数回の給紙動作を行うことによって達成される。
The above object is achieved by detecting a marker on the record and determining whether it is a special paper, and by performing a paper feeding operation a plurality of times to prevent normal paper from being fed due to an erroneous determination.

〔作用〕[Effect]

センサーは記録紙上のマーカーを検出し、制御回路へ送
る。制御回路は同時に送られて米る送りtm出器の出力
とセンサー出力とによりマーカーの位置とマーカーの形
状により正常紙か否かを判、定し、正常紙の場合には給
紙を続はプリント動作に入り、異常紙と判定した場合は
給tc動作を停止し、紙を逆方向に搬送し再び給紙動作
を開始するdこのように、異常紙と判定した場合には自
動的に複数回の給H1動作を行い、その間に正常紙と判
定したときは給紙動作からプリントに進み、a数回の給
紙動作を行っても異常紙と判定した場合には、。
The sensor detects the marker on the recording paper and sends it to the control circuit. The control circuit determines whether or not the paper is normal based on the position of the marker and the shape of the marker based on the output of the rice feeder and the sensor output at the same time, and if the paper is normal, the paper feed is continued. When the printing operation starts and it is determined that the paper is abnormal, the feeding tc operation is stopped, the paper is transported in the opposite direction, and the paper feeding operation is started againd.In this way, when it is determined that the paper is abnormal, multiple The H1 operation is performed several times, and if the paper is determined to be normal during that time, the process proceeds from the paper feeding operation to printing.

記録紙ケ逆方向に搬送し給紙動作を停止する。The recording paper is conveyed in the opposite direction and the paper feeding operation is stopped.

これによって正常紙のみを正しく給紙することかできる
This allows only normal paper to be fed correctly.

〔実施例〕〔Example〕

以下、本発明の実施例を絖明する。 Examples of the present invention will be explained below.

第1図は本発明の一実施例を示す図である。a−タリー
エンコーダのような回転量検出器1を取り付けた駆動モ
ータ2には駆動ギア3’a’介し一給紙ギア4−1.4
−2を接続し、給紙ギア4−1゜4−2にはそれぞれ表
面がゴムなど摩擦係数の大きな材量でできた給紙a−ラ
5−1.5−2が同軸的に設けである。記録紙6は給紙
a−ラ5−1゜5−2の間を搬送される。記録紙60畏
面にはマーカーa−1,8−2が印刷されている。記録
紙6が搬送され、マーカー8−1.8−2か通過する径
路の上にフォトカプラのようなマーク検出器y−1,7
−2が設けられている。
FIG. 1 is a diagram showing an embodiment of the present invention. A drive motor 2 equipped with a rotation amount detector 1 such as a tally encoder is connected to a paper feed gear 4-1.4 via a drive gear 3'a'.
-2 is connected, and paper feed gears 4-1 and 4-2 are coaxially provided with paper feed gears 5-1 and 5-2 whose surfaces are made of a material with a large friction coefficient such as rubber. be. The recording paper 6 is conveyed between paper feeding rollers 5-1 and 5-2. Markers a-1 and 8-2 are printed on the first side of the recording paper 60. Mark detectors y-1 and 7, such as photocouplers, are placed on the path through which the recording paper 6 is conveyed and the markers 8-1 and 8-2 pass.
-2 is provided.

駆動モータ2の回転により給紙a−ラ5−1゜5−2間
の記録紙6が搬送されるから、回転量検出器1は、記録
紙6の送り量検出器として作動する。
Since the recording paper 6 is conveyed between the paper feeding rollers 5-1 and 5-2 by the rotation of the drive motor 2, the rotation amount detector 1 operates as a feed amount detector for the recording paper 6.

マーク検出器7−1.7−2の出力と回転量1芙出器1
の出力は制御回路9へ送られる。コピースイッチ10を
押すと制御回路9は駆動モータ2’lONし給紙動作を
開始する。マーク検出器7−1゜7−2は記録紙6が通
過するときに、記録紙の有無とマーク5−1.8−2を
検知する。制御回路9はマーク検出器7−1.7−2の
出力と回転量検出器1の出力により、マーク8−1.8
−2の紙端からの位置、あるいは大きさを判断し記録紙
6が正常であるか否かを判定する。正常と判定した場合
には紙の搬送を続け、プリント動作に入る。
Mark detector 7-1. Output of 7-2 and rotation amount 1 extractor 1
The output of is sent to the control circuit 9. When the copy switch 10 is pressed, the control circuit 9 turns on the drive motor 2'1 and starts paper feeding operation. The mark detectors 7-1 and 7-2 detect the presence or absence of the recording paper and the marks 5-1, 8-2 when the recording paper 6 passes therethrough. The control circuit 9 detects the mark 8-1.8 based on the output of the mark detector 7-1.7-2 and the output of the rotation amount detector 1.
The position or size from the paper edge of -2 is determined to determine whether or not the recording paper 6 is normal. If it is determined to be normal, the paper continues to be conveyed and the printing operation begins.

正常紙のみを給紙するために判定で、正常紙が異常紙と
判定されることが生じるが、このとき記録紙6を逆方向
に搬送し給紙を止めたとすると、使用省か丹びコピース
イッチ10を押して給紙動作を開始させなくてはならな
い。ところが異常紙が入って米た場合、あるいは表裏逆
に給紙した場合、マーク検出器7−1.7−2からマー
ク検出出力は出ないから、何度判定を繰り返しても異常
紙を正常紙と判定することはあり得ない。そこで、正常
紙が異常紙と判定した場合には、記録紙6を逆方向に搬
送した仮、制御回路9は自動的に給紙動作を開始させる
。このように異常紙と判定した場合は逆方向へ搬送し、
丹び給紙を行う動作を自動的に何回か繰り返し、所定回
数後も異常紙と判定したら記録紙6を逆方向に搬送し給
紙を停止する。
Because only normal paper is fed, normal paper may be determined to be abnormal paper, but if the recording paper 6 is conveyed in the opposite direction and paper feeding is stopped at this time, it will be necessary to reduce the amount of paper used and copy. The switch 10 must be pressed to start the paper feeding operation. However, if abnormal paper is inserted and the paper is fed upside down, or if the paper is fed upside down, no mark detection output is output from mark detector 7-1 or 7-2. It is impossible to judge that. Therefore, if the normal paper is determined to be abnormal paper, the control circuit 9 automatically starts the paper feeding operation even if the recording paper 6 is conveyed in the opposite direction. If the paper is determined to be abnormal in this way, it is transported in the opposite direction.
The operation of paper feeding is automatically repeated several times, and if it is determined that the paper is abnormal even after a predetermined number of times, the recording paper 6 is conveyed in the opposite direction and paper feeding is stopped.

このときに始めて使用省には制御回路9から異常紙表示
のLEDllを点滅させるなどして知らせる。
Only at this time does the control circuit 9 notify the user by blinking the LED 11 indicating the abnormal paper.

所定の回数以前に正常紙と判定できたときには搬送を紙
はプリント動作に入る。
If the paper is determined to be normal before a predetermined number of times, the paper is transported and begins a printing operation.

絹2図に、動作のフローチャートを示す。もちろん異常
表示はしなくても良い。またマーカーの検出は、紙端か
らの位置だけによるもの、マーカーの幅を検出するもの
、複数のマーカーを検出するもの、あるいはこれらの組
み合わせによるものなどが考えられるが異常と判定した
ときに複数回給紙を繰り返すということに関して全く同
一である。
Figure 2 shows a flowchart of the operation. Of course, it is not necessary to display an abnormality. Marker detection can be performed by detecting only the position from the edge of the paper, by detecting the width of the marker, by detecting multiple markers, or by a combination of these, but if an abnormality is determined, multiple markers are detected. The same is true for repeating paper feeding.

第5図は制御回路9である。制御回路9はマイクロコン
ビエータ12トコンバレータ14 、15モ一タ反転回
路13から成っている。モータ反転回路15にはマイク
ココンピュータからモータ0N10FF信号116と正
転/逆転切換信号17が与えられる。
FIG. 5 shows the control circuit 9. The control circuit 9 consists of a micro combinator 12, a converter 14, and a 15 motor inverter circuit 13. A motor 0N10FF signal 116 and a forward/reverse rotation switching signal 17 are applied to the motor reversing circuit 15 from the microphone cocomputer.

第4図を茎モータ反転回路1301例である。モータ0
N10FF端子19にON信号+11が与えられ、正転
/逆転切換端子18に正転信号11+が与えられるとT
r、とTr、がONし、TrtとTr、がOP’ Fす
る。逆転信号IO+が与えられるとTr、とTr、がO
Nし、Trl とTr4がOFFする。これらによりモ
ータ2を正/逆転させ、記録紙6′tjI:搬送・逆敏
送できる。
FIG. 4 is an example of a stem motor reversing circuit 1301. motor 0
When ON signal +11 is applied to N10FF terminal 19 and forward rotation signal 11+ is applied to forward rotation/reverse rotation switching terminal 18, T
r and Tr are turned ON, and Trt and Tr are OP'F. When the reverse signal IO+ is applied, Tr and Tr become O.
N, and Trl and Tr4 are turned off. By these means, the motor 2 can be rotated forward/reversely, and the recording paper 6'tjI: conveyance/reverse transport can be carried out.

第5図に給紙動作のタイミングを示す。Cはコピースイ
ッチ10を押すことによってマイクロコンビエータ12
に与えられるスタートパルスである。
FIG. 5 shows the timing of paper feeding operation. C presses the copy switch 10 to copy the micro combinator 12.
This is the start pulse given to

スタートパルスが与えられるとマイクロコンビエータ1
2は、モータ0N10FF信号16を吊す。
When a start pulse is given, micro combinator 1
2 hangs the motor 0N10FF signal 16.

bはモータ0N10FF信号のタイミングでありHiが
ON、LoがOFFを示す。スタート時にマイクロコン
ビエータ12は−E−−ION10FFII?11号1
6と共に、正転/逆転信号17も出力する。CのIli
が正’%t 、 Loが逆転を示す。スタート時はll
iの正転指令を出し記録紙6を給紙する。d−はFG出
力を示す。eはセンサ7の出力である。センサ7は第3
図のようにLEDとフォトトランジスタの組み合わせK
より記録紙の反射により、記録紙の有無と記録紙上のマ
ーク8を検出する。第5図1でH番は記録紙の白部分で
あり、 Loは記録紙が無い状態か記録紙上のマーク部
分の反射のときのセンサ7の出力を示している。
b is the timing of the motor 0N10FF signal, where Hi indicates ON and Lo indicates OFF. At the start, the micro combinator 12 is -E--ION10FFII? No. 11 1
6, a forward/reverse rotation signal 17 is also output. Ili of C
is positive, Lo indicates inversion. ll at start
A forward rotation command of i is issued and the recording paper 6 is fed. d- indicates the FG output. e is the output of sensor 7. Sensor 7 is the third
Combination K of LED and phototransistor as shown in the figure
Based on the reflection of the recording paper, the presence or absence of the recording paper and the mark 8 on the recording paper are detected. In FIG. 5, number H indicates the white portion of the recording paper, and Lo indicates the output of the sensor 7 when there is no recording paper or when the mark portion on the recording paper is reflected.

コピースイッチ10が押されたとき正常動作ではセンサ
7の下に記録紙6は無いからセンサ出力はLoである。
In normal operation when the copy switch 10 is pressed, there is no recording paper 6 under the sensor 7, so the sensor output is Lo.

記録紙6が搬送され先端部がセンサ7の下に米るとセン
サ出力はHiになり、マークが通過する期間はLOにな
る。記録紙先端からマークまでの長さを、マイクロコン
ビエータ12はモータ2のFGiの出力をカウントする
ことによりて測る。
When the recording paper 6 is conveyed and its leading edge is below the sensor 7, the sensor output becomes Hi, and becomes LO during the period when the mark passes. The micro combinator 12 measures the length from the leading edge of the recording paper to the mark by counting the output of the FGi of the motor 2.

同様にマークの長さも測る。記録紙先端からマークまで
のFGパルス数が正常時扉でマークbがルとする。今、
マークfli5にゴミ等が付層しFGパルス数がル′に
なりたとする。記録先端からマークまでとマーク部分の
FGパルス数がm、%でないときマイクロコンビエータ
12は記録紙6が異常紙と判断し、モータ2を逆転させ
るために、正転/逆転信号17をLoにする。モータ2
を逆転し、再び記録紙6の先端が来るまで逆方向に搬送
する。これが1回目の給紙動作である。この後再びモー
タ2を正転させ記録紙先端とマーク部分のFGパルス数
を測り紙の判定を行なう。第4図の2回目はマーク部の
ゴミがとれて正しくm、nを測定し給紙が終了しモータ
2をOFFした時の状態である。
Measure the length of the mark in the same way. When the number of FG pulses from the leading edge of the recording paper to the mark is normal, the mark B is set at the door. now,
Suppose that the mark fli5 has a layer of dust etc. and the number of FG pulses has become l'. When the number of FG pulses from the recording edge to the mark and from the mark part is not m,%, the micro combinator 12 determines that the recording paper 6 is abnormal paper, and sets the forward/reverse rotation signal 17 to Lo in order to reverse the motor 2. do. motor 2
is reversed and conveyed in the opposite direction until the leading edge of the recording paper 6 is reached again. This is the first paper feeding operation. Thereafter, the motor 2 is rotated in the normal direction again, and the number of FG pulses at the leading edge of the recording paper and the mark portion is measured to determine the type of paper. The second time in FIG. 4 is the state when the dust on the mark portion has been removed, m and n have been measured correctly, paper feeding has been completed, and the motor 2 has been turned off.

2回目も異常とした場合は、この動作を複数回行なうこ
ともできる。所定回数行なっても異常と判定した場合に
はLEDllを点燈するなどして異常を使用者に知らせ
る。
If the second time is also determined to be abnormal, this operation can be performed multiple times. If it is determined that there is an abnormality even after repeating the process a predetermined number of times, the user is notified of the abnormality by lighting the LED 11 or the like.

マイクロコンピュータ12に与えるm 、 nの数はF
Gパルスと紙の位相が無関係であるために、ある程度の
幅を持たせることもできる。
The number of m and n given to the microcomputer 12 is F
Since the G pulse and the paper phase are unrelated, a certain width can be provided.

〔発明の効果〕〔Effect of the invention〕

本発明によれば、正常紙を数回誤って異常紙と判断した
場合でも、使う人に何度もコピースイッチを押させるこ
となしに、自動的に給紙動作を繰り返しプリント動作に
入るため、使い勝手の良いプリンタが得られる。
According to the present invention, even if normal paper is incorrectly determined to be abnormal paper several times, the paper feeding operation is automatically repeated and printing operation starts without requiring the user to press the copy switch many times. You can get a printer that is easy to use.

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

第1図は本発明のプリンタの1実施例を示す斜視図、第
2図は動作の7a−チャート、第3図は制御回路のブロ
ック図、第4図はモータの反転回路の回路図、第5図は
給紙動作のタイミングチャードである。 1・・・回転量検出器   2・・・駆動モータ5−1
 、5−2・・・給紙a−ラ6・・・記録紙7−1.7
−2・・・マーク検出器 8−1 、8−2・・・マーク  9・・・制御回路1
0・・・コピースイッチ  11・−LED、である。 代坪人升埋士 小 川 勝 男 第1図 第 2 目
FIG. 1 is a perspective view showing one embodiment of the printer of the present invention, FIG. 2 is a 7a-chart of operation, FIG. 3 is a block diagram of a control circuit, FIG. 4 is a circuit diagram of a motor reversing circuit, and FIG. FIG. 5 is a timing chart of paper feeding operation. 1... Rotation amount detector 2... Drive motor 5-1
, 5-2... Paper feed a-ra 6... Recording paper 7-1.7
-2... Mark detector 8-1, 8-2... Mark 9... Control circuit 1
0...Copy switch 11.-LED. Daitsubo person Masu burier Masao Ogawa Diagram 1 No. 2

Claims (1)

【特許請求の範囲】[Claims] 1、モーターの駆動力で記録紙の搬送を行う給紙ローラ
と、記録紙の送り量検出器と、給紙時に記録紙が搬送さ
れる径路の近くに取付けられ記録紙及び記録紙上の所定
のパターンを読みとるセンサーと、センサー出力と送り
量検出器の出力とにより前記モーターの制御を行う制御
回路と、給紙動作の開始指令を制御回路に与えるスイッ
チと、を有するプリンタにおいて、給紙動作時に所定の
センサー出力が得られない場合には前記のスイッチから
の指令がなくても記録紙のもどしと給紙動作を複数回行
なうようにしたことを特徴とするプリンタ制御回路。
1. A paper feed roller that transports the recording paper using the driving force of a motor, a recording paper feed amount detector, and a paper feed roller that is installed near the path along which the recording paper is conveyed during paper feeding and detects the recording paper and a predetermined position on the recording paper. In a printer having a sensor that reads a pattern, a control circuit that controls the motor based on the sensor output and the output of a feed amount detector, and a switch that gives a command to start paper feeding operation to the control circuit, A printer control circuit characterized in that when a predetermined sensor output is not obtained, recording paper return and paper feeding operations are performed multiple times even without a command from the switch.
JP61247409A 1986-10-20 1986-10-20 Printer control circuit Expired - Lifetime JPH0696301B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP61247409A JPH0696301B2 (en) 1986-10-20 1986-10-20 Printer control circuit

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP61247409A JPH0696301B2 (en) 1986-10-20 1986-10-20 Printer control circuit

Publications (2)

Publication Number Publication Date
JPS63102960A true JPS63102960A (en) 1988-05-07
JPH0696301B2 JPH0696301B2 (en) 1994-11-30

Family

ID=17163005

Family Applications (1)

Application Number Title Priority Date Filing Date
JP61247409A Expired - Lifetime JPH0696301B2 (en) 1986-10-20 1986-10-20 Printer control circuit

Country Status (1)

Country Link
JP (1) JPH0696301B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02231327A (en) * 1989-03-06 1990-09-13 Oki Electric Ind Co Ltd Media discrimination device in cassette
US6425380B2 (en) 1998-04-30 2002-07-30 Aisan Kogyo Kabushiki Kaisha Canister for evaporated fuel treatment apparatus
JP2010042678A (en) * 2002-10-18 2010-02-25 Konica Minolta Holdings Inc Inkjet recording apparatus

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545625A (en) * 1977-06-16 1979-01-17 Ricoh Co Ltd Print density checking system for stop mark on paper surface in inserter
JPS59209167A (en) * 1983-05-13 1984-11-27 Canon Inc Recorder

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS545625A (en) * 1977-06-16 1979-01-17 Ricoh Co Ltd Print density checking system for stop mark on paper surface in inserter
JPS59209167A (en) * 1983-05-13 1984-11-27 Canon Inc Recorder

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02231327A (en) * 1989-03-06 1990-09-13 Oki Electric Ind Co Ltd Media discrimination device in cassette
US6425380B2 (en) 1998-04-30 2002-07-30 Aisan Kogyo Kabushiki Kaisha Canister for evaporated fuel treatment apparatus
JP2010042678A (en) * 2002-10-18 2010-02-25 Konica Minolta Holdings Inc Inkjet recording apparatus

Also Published As

Publication number Publication date
JPH0696301B2 (en) 1994-11-30

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