JPH04208952A - Color electrophotographic device - Google Patents

Color electrophotographic device

Info

Publication number
JPH04208952A
JPH04208952A JP2400497A JP40049790A JPH04208952A JP H04208952 A JPH04208952 A JP H04208952A JP 2400497 A JP2400497 A JP 2400497A JP 40049790 A JP40049790 A JP 40049790A JP H04208952 A JPH04208952 A JP H04208952A
Authority
JP
Japan
Prior art keywords
multicolor
mode
speed
transfer material
color
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
JP2400497A
Other languages
Japanese (ja)
Inventor
Toshiaki Kameyama
敏明 亀山
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.)
Ricoh Co Ltd
Original Assignee
Ricoh Co 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 Ricoh Co Ltd filed Critical Ricoh Co Ltd
Priority to JP2400497A priority Critical patent/JPH04208952A/en
Publication of JPH04208952A publication Critical patent/JPH04208952A/en
Pending legal-status Critical Current

Links

Classifications

    • GPHYSICS
    • G03PHOTOGRAPHY; CINEMATOGRAPHY; ANALOGOUS TECHNIQUES USING WAVES OTHER THAN OPTICAL WAVES; ELECTROGRAPHY; HOLOGRAPHY
    • G03GELECTROGRAPHY; ELECTROPHOTOGRAPHY; MAGNETOGRAPHY
    • G03G2215/00Apparatus for electrophotographic processes
    • G03G2215/00362Apparatus for electrophotographic processes relating to the copy medium handling
    • G03G2215/00919Special copy medium handling apparatus
    • G03G2215/00949Copy material feeding speed switched according to current mode of the apparatus, e.g. colour mode

Landscapes

  • Paper Feeding For Electrophotography (AREA)
  • Control Or Security For Electrophotography (AREA)
  • Color Electrophotography (AREA)

Abstract

PURPOSE:To prevent offset to a fixing roller and a fault caused by the offset from occurring by providing a paper quality detecting means in a transfer material carrying path and switching a carrying speed to a speed approriate for a plain paper when the plain paper is detected in a state where an OHP sheet feeding mode is selected. CONSTITUTION:In the case of selecting an OHP sheet in a multicolor mode, a detection signal from a sheet material (paper quality) detecting means 18 provided in the transfer material carrying path is inputted in a speed control part 17, and the speed of a stepping motor 13 is controlled according to the detected material of the sheet. When a monochrome mode is selected, the carrying speed for monochrome is set and a multicolor mode is selected, and when a plain paper mode is selected, the 1st carrying speed for multicolor lower than the carrying speed for monochrome is set and the multicolor mode is selected, and when the OHP sheet is selected, the 2nd carrying speed for multicolor lower than the 1st carrying speed for multicolor is set. At the time of detecting the sheet having the material other than the OHP sheet by the means 18, the carrying speed is switched to the 1st carrying speed for multicolor.

Description

【発明の詳細な説明】[Detailed description of the invention]

[00011 [00011

【産業上の利用分野]本発明は、単色モードと多色モー
ドとが選択可能なカラー電子写真装置に関する。 ヘッドプロジェクタ)フィルムの画像は、上記の通常の
フルカラー画像よりも、さらにトナーの表面を均一にす
る必要がある。これは、OHPによる透過性を上げるた
めで、定着装置は通常のフルカラーに必要な加熱能力よ
りさらに高い能力が必要となる。 [0006]そこで、カラー画像形成装置において、O
HPフィルムへの画像形成モード時と通常の転写紙への
画像形成モード時とで、転写シートの搬送速度を、OH
Pフィルムへの画像形成モードの時には通常の転写シー
10  トの時よりも遅くなるように切換る如く制御す
ることが、特開昭60−211483号公報や特開平1
−193885号公報に開示されている。又、フルカラ
ー複写機で単色コピーを行う場合には、フルカラーコピ
ー時よりも転写紙搬送速度を速くすることは従来より行
なわれている。 【0007】しかし、上記OHPフィルムの定着を可能
とする定着能力では、通常に使用される転写紙、特に薄
紙及び第2原図用の用紙に対しては過剰加熱となって、
定着ローラにトナーがオフセットして適正な画像が得ら
y れないのみならず、オフセットしたトナーによって
、定着ローラの損傷が発生する等の不具合がある。 [0008]
BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a color electrophotographic apparatus capable of selecting a single color mode or a multicolor mode. For images produced by a head projector (head projector) film, it is necessary to make the surface of the toner more uniform than for the above-mentioned normal full-color image. This is to increase transparency by OHP, and the fixing device requires a heating capacity higher than that required for normal full color. [0006] Therefore, in a color image forming apparatus, O
The conveyance speed of the transfer sheet can be set to
It is disclosed in Japanese Patent Application Laid-Open No. 60-211483 and Japanese Patent Laid-Open No. 1999-1999 that the image formation mode on P film is controlled so that the switching is slower than when using a normal transfer sheet.
It is disclosed in Japanese Patent No.-193885. Furthermore, when performing monochrome copying with a full-color copying machine, it has been conventional practice to increase the transfer paper conveyance speed compared to the time of full-color copying. However, the fixing ability of the above-mentioned OHP film does not allow for excessive heating of commonly used transfer paper, especially thin paper and paper for second original drawings.
Not only will the toner be offset to the fixing roller, making it impossible to obtain a proper image, but the offset toner may also cause damage to the fixing roller. [0008]

【発明が解決しようとする課題】本発明は、上述の事実
[0002]
Problem to be Solved by the Invention The present invention solves the above-mentioned fact [0002]

【従来の技術】電子写真によるフルカラー画像の形成に
は通常、シアン、マゼンタ、イエローの減色法の3原色
及び必要により黒色を加えた4色のトナー像を同一転写
紙上に重ね合せて転写し、定着する色分解像重ね合せ転
写方式が広く採用されている。 [0003]転写紙上の粉体カラートナーは一般に未定
着の場合は勿論、半溶融状態においても透明性が悪いの
で、減色法による色再現を行なうためには、現像された
複数色のトナーの重層画像を完全に溶融させ混色させな
ければならない。この溶融状態が不充分であると、得ら
れる画像の色調はトナーの重なり部分において、最後に
転写されたトナーの色が支配的となり、忠実な色再現が
困難となる。さらに、フルカラーコピーの場合、コピー
の色調、濃度及び質感等の画質を高める上で定着後の画
像には適度の光沢を要求される。 [0004]又、フルカラーコピーにおいては、高品質
画像をうるために、単色コピーの時より厚手の上質紙を
用いることが多い。従って、フルカラーコピーの加熱定
着には、充分の加熱能力が要求されることになる。−方
、単色コピーの定着においては、フルカラーコピーに較
べて混色の必要がなく、又単色のトナーの付着量では相
当の加熱を行っても得られる光沢はわずかであり、単色
コピーの定着に要求される加熱能力は、トナー画像が擦
れて剥れることがない通常の定着状態が得られれば充分
である。 [0005]又、フルカラーにおいて、OHP (オー
バにかんがみ、フルカラーモードでかつOHPフィルム
使用モード時に誤って通常の転写紙特に薄紙を通過した
場合にも、上述の問題の発生を未然に防止することので
きるカラー電子写真装置を提供することを課題とする。 [0009]
2. Description of the Related Art To form a full-color image by electrophotography, toner images of four colors, including the three subtractive primary colors of cyan, magenta, and yellow, and black if necessary, are superimposed and transferred onto the same transfer paper. A fixed color separation image overlay transfer method is widely used. [0003] Powder color toner on transfer paper generally has poor transparency not only when it is unfixed but also when it is in a semi-molten state, so in order to reproduce color by subtractive color method, it is necessary to use a multilayer layer of developed toners of multiple colors. The image must be completely fused and the colors mixed. If this melting state is insufficient, the color tone of the resulting image will be dominated by the color of the last transferred toner in the overlapping toner areas, making faithful color reproduction difficult. Furthermore, in the case of full-color copying, the image after fixing is required to have an appropriate level of gloss in order to improve the image quality of the copy, including its color tone, density, and texture. [0004] Furthermore, in full-color copies, in order to obtain high-quality images, thicker high-quality paper is often used than in monochrome copies. Therefore, sufficient heating capacity is required for heat fixing full color copies. - On the other hand, when fixing single-color copies, there is no need for color mixing compared to full-color copies, and with the amount of adhered toner of a single color, even if a considerable amount of heating is applied, the gloss obtained is small, which is required for fixing single-color copies. The heating capacity used is sufficient as long as a normal fixing state in which the toner image is not rubbed or peeled off is obtained. [0005] In addition, in full color, OHP (In consideration of overload, there is a method to prevent the above-mentioned problem from occurring even if normal transfer paper, especially thin paper, is accidentally passed through in full color mode and OHP film use mode. [0009]

【課題を解決するための手段】本発明は、上記の課題を
30  解決するため、感光体上に順次形成された複数
色のトナー像を同一転写材上に重ね合せ転写し定着する
多色モードと、−色のトナー像を転写材に転写し定着す
る単色モードとが選択可能であり、上記多色モード選択
時、転写材としてOHPシートと他の材質のシートとが
選択可能であり、上記のモード選択及び転写材の材質選
択に応じて転写材搬送速度が、単色モード選択時には単
色搬送速度、多色モード選択時でOHPシート以外の材
質のシート選択時には上記単色搬送速度よりも遅い第1
多色搬送速度、多色モード選択時でOHPシート選択時
には上記循 第1多色搬送速度よりも更に遅い第2多色
搬送速度に設定されるように制御されるカラー電子写真
装置において、転写材搬送経路に転写材の材質検知手段
を設け、多色モード時でOHPシート選択時、上記転写
材々質検知手段により検知された転写材の材質がOHP
シート以外のシートである場合は、転写材搬送速度が上
記第1多色搬送速度に切り換えられる如く制御されるこ
とを特徴とする。 [00101
[Means for Solving the Problems] In order to solve the above-mentioned problems, the present invention provides a multicolor mode in which toner images of a plurality of colors sequentially formed on a photoreceptor are superimposed, transferred and fixed onto the same transfer material. and a single color mode in which a -color toner image is transferred to a transfer material and fixed, and when the above multicolor mode is selected, an OHP sheet and a sheet made of another material can be selected as the transfer material, and the above Depending on the mode selection and the selection of the material of the transfer material, the transfer material conveyance speed is the first one, which is slower than the single color conveyance speed when the single color mode is selected, and when the multicolor mode is selected and a sheet made of material other than OHP sheet is selected.
In a color electrophotographic apparatus, a transfer material is controlled so that the multicolor transport speed is set to a second multicolor transport speed that is slower than the first multicolor transport speed when an OHP sheet is selected in a multicolor mode. A transfer material material detection means is provided on the conveyance path, and when an OHP sheet is selected in multicolor mode, the material of the transfer material detected by the transfer material material detection means is OHP.
In the case of a sheet other than the sheet, the transfer material conveyance speed is controlled so as to be switched to the first multicolor conveyance speed. [00101

【作用]上記の構成により、多色モードが選択され、か
5θ つOHPシート通紙モードが選択された状態で、
誤ってjlりれのシー 1−を挿入して通紙I7た場合
は、転写材の搬送路に設げられた転写材々質検知手段に
よりそれがOHPシー 1・でないことが検知され、そ
の検知信号により、シー1・搬送速度が通常のシー何−
を使用した多色コピーに適する速度に切換えられる如く
制御さネするので、過剰加イJ)による定着ローラへの
オフセット及び定着ロー ラの損イ8等の事故を未然に
防止するこ、とが出来る。 [00113 【実施例]以下に本発明の実施例を、図面に基で5いて
詳細に説明する。 [00121図1は本発明の実施例としての単色コピー
モー ドとフルカラーコピーモードとが選択i′11能
な色分解像重ね合せ転写力式のカラー電子写真複写機の
一例の全体構成を示す図である。 [0013]装置の頂板に設けC′目−Lム−1ンタク
トガラスILに載置された原稿は露先々学系2、切換え
て光路に挿入可能な色分解フィルタ3を経て、感光体ド
ラム4上に結像15.露光され、感光体」二に静電潜像
が形成される。。 フルカラーコピー時は青、緑、赤の色分解フィルタを光
路に挿入I1.て色分解された光にに、↓−り感光体]
−に3種の像が形成され、その夫々は感光体4に沿って
配設されたイエロー、マゼンタ、シアンの現(’Ir器
5Y、  5M、  5Cによl′)現像されて夫々の
色の1−す−像が順次形成される9、5−の)−、1−
一像は、給紙部6より給紙1ヶ才′1、感光体ドラムに
接して接点で同じ力向に同線速で回転する転写ド[00
181図3は、搬送駆動部と(1,71の上記ステッピ
ングモータ13の速度制御ブロック図である。ステッピ
ングモータ13による転写紙搬送速度は、9色、多色モ
ー ド選択手段〕5、多色モード選択時のOHPシー刊
・選択手段]6の選択と連動して速度制御部17により
、夫々のモー ドに適した定着時間となるような速度に
自動的に切換えられる点は従来通りであるが、本実施例
の装置では、本発明に基づき、多色モー ドでOHPシ
ート選択時に、転写材搬送路に設げら第1たシー1−・
材質検知手段1108の検知信号が速度制御部】7に入
力され、検知されたシー川−の材質によってステッピン
グモータ13の速度が制御される。シー1・の材質検知
下、段は、図1−の例で゛は、給紙部6から転写ドラム
7への給紙経路の17ジスI・ローラ】9の直前の位置
に符号〕8で示されている。 [0019]単色、多色モー ドの選択、多色モー ド
間の通常紙とOHP紙の選択及び紙質検知手段による検
知紙質に対する用紙搬送速度は次のとおりである。 [00201単色モード選択時には、吸色搬送速度が設
定さね、多色モードが選択され、かつ普通紙モー ド選
択、m 時には単色搬送速度よりも遅い第1多色搬送速
度が設定され、多色モードが選択され、かつOHPシー
川・用択時には第り多色搬送速度より遅い第2多色搬送
速度が1設定される。ただし、紙質検知手段]−8が0
HI)シート・を検知[5,た時には搬送速度は第1多
色搬送速度に切換えらねる。 ラム7に巻回された転写紙に位置を合せて重ね合せで転
写され、所定の数のトナー像の転写が完了(〜だ後転写
紙は分1署チャ・−ジャ8及び分離爪9により分隔され
、搬送ベル1〜10により熱「]−ラ定着装置11に搬
送され定着さイ上機外に排出さね、る。       
         3θ[0014]上記のフルカラー
丁7ビーモード時、爪ね合せられる画像の数はNDフィ
ルタを通し黒現像器;〕Bで現像し5た黒1−すm個を
加えて4色とすることも通常行な才つれている。 [0015]又、単色コピーの場合は、〔先々路にND
フィルタを挿入して感光体を露光[、黒色現像器5Bに
、!−1り現像された黒色l・ナー像のみが転写ドラム
7に巻回された転写紙に転写され、定着される。 [00161給紙部6の給紙力セラ1−装日部の直上に
目、折畳みriJ能に手差1..7テーブル12が設(
1られており、040HPフイルム等、給紙力セラ)・
に積載された転写紙以外のシートを給紙できるようにな
っている。 [0017]図2は、定着装置]1及び定着装置への搬
送べJl、 l−10の駆動装置を示す図で、定着装置
11の定着ローラ]、]、a及び搬送べ井+10の駆動
軸10aは、ステッピングモータ13によりギヤ列G 
l、 G2及びGl、 G3. G4を4して同期して
同搬送速度になるように駆動される。搬送ベルh 1 
Oの下側には吸引ファン[4が設(」られ、未定着1−
ナー像を上面に担持する転写紙ば下面をベル)−10の
面に吸着されて搬送さ才する。    f)−0[00
21:1図4は、上記のモード選択及び(’IHPモー
ト時の014 Pシー1・・以外の材質のシート検知時
の搬送速度の切換制御のフローチャー1・である。ぞの
〕「1−はこヌ迄の説明及びフローチャー川・自体によ
り自明であるからこれ以上の説明は行なわない。 [00221図5は、本発明のカラー電子写真装置の操
作部の一例の要部を示す図である3、操作部2jには、
i4を色モードと多色モー ドとの選択キー22、OH
Pシーl・・選択キー 23が備えらイ1ている他は通
常の複写機の操作部と特に変るところばない。 [0023)I K効♀】以上の如く、本発明によれば、フルカラーモー
・ドでOHPへのコピーを選択し、誤りY′通常の用紙
を挿入して通紙
[Operation] With the above configuration, when the multicolor mode is selected and the 5θ OHP sheet feeding mode is selected,
If you accidentally insert a paper sheet 1- that is not OHP sheet 1- and pass the paper, the transfer material quality detection means installed in the transfer material conveyance path will detect that it is not an OHP sheet 1-, and The detection signal indicates that the sea 1 conveyance speed changes to the normal sea level.
Since the speed is controlled so as to be switched to a speed suitable for multi-color copying using I can do it. [00113] [00113] Examples of the present invention will be described in detail below with reference to the drawings. [00121 FIG. 1 is a diagram showing the overall configuration of an example of a color electrophotographic copying machine of the color separation image superimposition transfer type capable of selecting between a monochrome copy mode and a full-color copy mode as an embodiment of the present invention. be. [0013] The original placed on the contact glass IL provided on the top plate of the apparatus passes through the exposure point system 2, the color separation filter 3 which can be switched and inserted into the optical path, and then the photosensitive drum 4. Image formed on top15. It is exposed to light, and an electrostatic latent image is formed on the photoreceptor. . During full color copying, insert blue, green, and red color separation filters into the optical path I1. ↓ - photoreceptor]
- Three types of images are formed on the photoconductor 4, and each of these images is developed with yellow, magenta, and cyan images (Ir units 5Y, 5M, and 5C) disposed along the photoreceptor 4 to produce the respective colors. 1-images of 9, 5-)-, 1- are formed sequentially.
One image is fed from the paper feed section 6, and the transfer drive [00
181 FIG. 3 is a speed control block diagram of the conveyance drive unit and the stepping motor 13 (1, 71). The transfer paper conveyance speed by the stepping motor 13 is 9 colors, multicolor mode selection means] 5, As before, the speed control section 17 automatically switches the speed to the one that provides the fixing time suitable for each mode in conjunction with the selection of [OHP sheet publication/selection means] 6 when selecting the mode. However, in the apparatus of this embodiment, based on the present invention, when selecting an OHP sheet in multicolor mode, the first sheet 1-.
A detection signal from the material detection means 1108 is input to the speed control section 7, and the speed of the stepping motor 13 is controlled according to the detected material of the sea river. Under the detection of the material of the sheet 1, in the example shown in FIG. It is shown. [0019] The selection of single color mode and multicolor mode, the selection of regular paper and OHP paper between the multicolor modes, and the paper conveyance speed for the paper quality detected by the paper quality detection means are as follows. [00201 When the single color mode is selected, the color absorption transport speed is set, the multicolor mode is selected, and the plain paper mode is selected. When the mode is selected and the OHP Sea River mode is selected, a second multicolor transport speed that is slower than the first multicolor transport speed is set to 1. However, paper quality detection means] -8 is 0
HI) Detecting the sheet [5, Sometimes the conveyance speed cannot be switched to the first multicolor conveyance speed. The transfer paper is aligned and superimposed on the transfer paper wound around the ram 7, and the transfer of a predetermined number of toner images is completed. The images are separated and conveyed by conveyor bells 1 to 10 to a thermal fixing device 11, where the fixing particles are discharged outside the upper machine.
3θ [0014] In the above full color 7B mode, the number of images that can be combined is 4 colors by adding 1 - m pieces of black that are passed through an ND filter and developed with a black developer; He is also usually talented. [0015] Also, in the case of monochrome copying, [ND
Insert the filter and expose the photoreceptor [to the black developer 5B,! Only the developed black l/toner image is transferred to the transfer paper wound around the transfer drum 7 and fixed. [00161 Paper feeding force cellar 1 of paper feeding section 6 - eyes directly above the loading section, manual feed for folding RIJ function 1. .. 7 tables and 12 were set up (
1, 040HP film, etc., paper feeding power Cera)・
It is now possible to feed sheets other than the transfer paper loaded on the machine. [0017] FIG. 2 is a diagram showing a drive device for the fixing device [1] and the conveyor belts Jl, l-10 to the fixing device, in which the drive shafts of the fixing rollers], ], a of the fixing device 11 and the conveyor belt +10 are shown. 10a is a gear train G driven by a stepping motor 13.
l, G2 and Gl, G3. G4 is set to 4 to synchronize and drive to the same conveyance speed. Transport bell h 1
A suction fan [4] is installed on the lower side of the
The transfer paper carrying the toner image on its upper surface is conveyed with its lower surface attracted to the surface of the bell (10). f) −0[00
21:1 Figure 4 is a flowchart 1 of the above-mentioned mode selection and conveyance speed switching control when detecting a sheet of material other than 014 P Sea 1 in IHP mode. - Since it is self-evident from the explanation up to this point and the flowchart itself, no further explanation will be given. [00221 FIG. 3, the operation section 2j has the following:
Press i4 to select color mode or multicolor mode, select key 22, OH
There is no particular difference from the operating section of a normal copying machine, except that it is equipped with a P seal...selection key 23. [0023) IK effect ♀] As described above, according to the present invention, copying to OHP is selected in full color mode, error Y' is inserted and paper is passed.

【7た場合は搬送速度が自動的に通常紙
の定着に適する搬送速度に一切換えl霞するので、過剰
定着による定着ローラへのオフセラI・及びこれに起因
する故障を未然に防止することができる。 【図面の簡単な説明】
[7] Since the transport speed is automatically changed to a transport speed suitable for fixing regular paper, it is possible to prevent off-setting of the fixing roller due to excessive fixing and failures caused by this. can. [Brief explanation of the drawing]

【図1】本発明の実施例のカラー複写機の全体構成を示
す断面図である。
FIG. 1 is a sectional view showing the overall configuration of a color copying machine according to an embodiment of the present invention.

【図2】その定着装置及び搬送へルトの駆動装置を示す
斜視図である。
FIG. 2 is a perspective view showing the fixing device and the drive device for the transport belt.

【図:()上記実施例の上記駆動装置の搬送速度制御ブ
1」ツク図である1、 【図4】上記実施例の搬送速度切換制御のフローチャー
[Figure: () Diagram 1 of the conveyance speed control block 1 of the drive device of the above embodiment. [Figure 4] Flowchart of conveyance speed switching control of the above embodiment.

【図3】[Figure 3]

【図4】[Figure 4]

Claims (1)

【特許請求の範囲】[Claims] 【請求項1】感光体上に順次形成された複数色のトナー
像を同一転写材上に重ね合せ転写し定着する多色モード
と、一色のトナー像を転写材に転写し定着する単色モー
ドとが選択可能であり、上記多色モード選択時、転写材
としてOHPシートと他の材質のシートとが選択可能で
あり、上記のモード選択及び転写材の材質選択に応じて
転写材搬送速度が、単色モード選択時には単色搬送速度
、多色モード選択時でOHPシート以外の材質のシート
選択時には上記単色搬送速度よりも遅い第1多色搬送速
度、多色モード選択時でOHPシート選択時には上記第
1多色搬送速度よりも更に遅い第2多色搬送速度に設定
されるように制御されるカラー電子装置において、転写
材搬送経路に転写材の材質検知手段を設け、多色モード
時でOHPシート選択時、上記転写材々質検知手段によ
り検知された転写材の材質がOHPシート以外のシート
である場合は、転写材搬送速度が上記第1多色搬送速度
に切換えられる如く制御されることを特徴とするカラー
電子写真装置。
[Claim 1] A multicolor mode in which toner images of multiple colors sequentially formed on a photoconductor are superimposed, transferred and fixed on the same transfer material, and a single color mode in which a toner image of one color is transferred and fixed on the transfer material. can be selected, and when the multicolor mode is selected, OHP sheets and sheets of other materials can be selected as the transfer material, and the transfer material conveyance speed is set according to the mode selection and the material selection of the transfer material. When the single color mode is selected, the single color conveyance speed is set; when the multicolor mode is selected and a sheet made of a material other than an OHP sheet is selected, the first multicolor conveyance speed is slower than the above single color conveyance speed; when the multicolor mode is selected and an OHP sheet is selected, the above first multicolor conveyance speed is set. In a color electronic device that is controlled to be set to a second multicolor transport speed that is slower than the multicolor transport speed, a transfer material material detection means is provided in the transfer material transport path, and OHP sheet selection is performed in the multicolor mode. When the material of the transfer material detected by the transfer material quality detection means is a sheet other than an OHP sheet, the transfer material conveyance speed is controlled to be switched to the first multicolor conveyance speed. Color electrophotographic equipment.
JP2400497A 1990-12-05 1990-12-05 Color electrophotographic device Pending JPH04208952A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2400497A JPH04208952A (en) 1990-12-05 1990-12-05 Color electrophotographic device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2400497A JPH04208952A (en) 1990-12-05 1990-12-05 Color electrophotographic device

Publications (1)

Publication Number Publication Date
JPH04208952A true JPH04208952A (en) 1992-07-30

Family

ID=18510395

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2400497A Pending JPH04208952A (en) 1990-12-05 1990-12-05 Color electrophotographic device

Country Status (1)

Country Link
JP (1) JPH04208952A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08324051A (en) * 1995-06-05 1996-12-10 Fujitsu Ltd Image forming apparatus
US7072595B2 (en) * 2001-12-20 2006-07-04 Konica Corporation Controller for controlling the current supplied to a motor of an image forming apparatus
JP2008296594A (en) * 2008-09-05 2008-12-11 Fujitsu Ltd Image forming device

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH08324051A (en) * 1995-06-05 1996-12-10 Fujitsu Ltd Image forming apparatus
US7072595B2 (en) * 2001-12-20 2006-07-04 Konica Corporation Controller for controlling the current supplied to a motor of an image forming apparatus
JP2008296594A (en) * 2008-09-05 2008-12-11 Fujitsu Ltd Image forming device
JP4575482B2 (en) * 2008-09-05 2010-11-04 富士通株式会社 Image forming apparatus

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