JPH07140739A - Image forming device and image density maintaining method therefor - Google Patents

Image forming device and image density maintaining method therefor

Info

Publication number
JPH07140739A
JPH07140739A JP5307419A JP30741993A JPH07140739A JP H07140739 A JPH07140739 A JP H07140739A JP 5307419 A JP5307419 A JP 5307419A JP 30741993 A JP30741993 A JP 30741993A JP H07140739 A JPH07140739 A JP H07140739A
Authority
JP
Japan
Prior art keywords
belt
developing sleeve
drum
main motor
shaped groove
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
JP5307419A
Other languages
Japanese (ja)
Inventor
Yoshifumi Okauchi
慶文 岡内
Mitsuharu Yoshimoto
光晴 芳本
Takakazu Morita
孝和 森田
Koyo Ito
幸洋 伊藤
Shinji Yamamoto
真司 山本
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.)
Kyocera Mita Industrial Co Ltd
Original Assignee
Mita Industrial 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 Mita Industrial Co Ltd filed Critical Mita Industrial Co Ltd
Priority to JP5307419A priority Critical patent/JPH07140739A/en
Publication of JPH07140739A publication Critical patent/JPH07140739A/en
Pending legal-status Critical Current

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  • Dry Development In Electrophotography (AREA)
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Abstract

PURPOSE:To provide an image forming device capable of maintaining the the density of an image with respect to temperature and humidity without generating fogging and the scattering of toner and the image density maintaining method of the image forming device. CONSTITUTION:The image forming device is provided with a developing sleeve, a main motor driving a drum via a transmission body, a cocked belt 5 extended over the transmission body and the main motor, a belt receiving part 6 receiving driving force from the main motor, a pulley 9 having a rotary shaft 7 transmitting the driving force from the main motor and a V-shaped groove 8, a V-belt 11 fitted into the V-shaped groove 8 and extended over the side of the rotary shaft 7 and the transmission body of the developing sleeve. V-belt receivers 12 and 13 forming the V-shaped groove 8 and extendable/contractable members 14a, 14b and (14c) in an X axial direction in accordance with the variations in the temperature and humidity, to vary a width W.

Description

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

【０００１】[0001]

【産業上の利用分野】この発明は画像形成装置および画
像形成装置における画像濃度維持方法に関し、特に、温
湿度変化の影響を受けることなく、安定した画像濃度を
維持できる画像形成装置および画像濃度維持方法に関す
るものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an image forming apparatus and an image density maintaining method for an image forming apparatus, and more particularly to an image forming apparatus and an image density maintaining method capable of maintaining stable image density without being affected by changes in temperature and humidity. It is about the method.

【０００２】[0002]

【従来の技術および発明が解決しようとする課題】従
来、二成分現像装置を備えた複写機では、トナーおよび
キャリアを成分とする現像剤Ｄと前記トナーＴとの比
（Ｔ／Ｄ）および現像バイアスを変化させる方法で温湿
度変化に対して画像濃度を維持するようにしているが、
カブリおよびトナー飛散が発生しやすい。2. Description of the Related Art Conventionally, in a copying machine provided with a two-component developing device, the ratio (T / D) between the developer D containing toner and carrier as a component and the toner T and the developing process. The image density is maintained against changes in temperature and humidity by changing the bias.
Fogging and toner scattering easily occur.

【０００３】すなわち、比（Ｔ／Ｄ）を高くするとトナ
ー量が大になるから、トナーの帯電量が設定値まで上昇
しないという事態に陥り、帯電量が少ないのでトナーと
キャリアの結合力が小さくなる。依って、現像スリーブ
が回転するときに、画像濃度を維持するために現像バイ
アスを下げると、トナー飛散が発生し易くなる。しかも
前記結合力が小さいから、トナーがドラムにのり易くな
り、カブリが発生する。That is, when the ratio (T / D) is increased, the amount of toner becomes large, so that the amount of charge of the toner does not rise to the set value, and the amount of charge is small, so the binding force between the toner and the carrier is small. Become. Therefore, when the developing sleeve rotates, if the developing bias is lowered in order to maintain the image density, toner scattering easily occurs. In addition, since the binding force is small, the toner easily gets on the drum, causing fog.

【０００４】この発明は、上記問題に鑑みてなしたもの
で、その目的は、カブリおよびトナー飛散を発生させる
こと無く温湿度変化に対して画像濃度を維持できる画像
形成装置および画像形成装置における画像濃度維持方法
を提供することである。The present invention has been made in view of the above problems, and an object thereof is an image forming apparatus and an image in the image forming apparatus capable of maintaining an image density against a change in temperature and humidity without causing fog and toner scattering. It is to provide a method for maintaining concentration.

【０００５】[0005]

【課題を解決するための手段および作用】本発明者ら
は、カブリおよびトナー飛散が発生するのを回避させる
観点から、画像濃度（Image Density ：以下、ＩＤとい
う）に影響するパラメータの１つとして、ドラムＤと現
像スリーブＳの周速比（Ｓ／Ｄ）に注目した。そして、
温度・湿度が高いと、画像濃度（ＩＤ）は一般に濃くな
り、低いと薄くなることを踏まえた上で、例えば、低温
時に画像濃度（ＩＤ）が薄くなる場合に、周速比（Ｓ／
Ｄ）を変化させることで画像濃度（ＩＤ）が正常時の濃
さに維持できるかどうかを検討した。Means and Actions for Solving the Problems From the viewpoint of avoiding the occurrence of fog and toner scattering, the present inventors have set as one of the parameters that influence the image density (Image Density: hereinafter referred to as ID). Attention was paid to the peripheral speed ratio (S / D) between the drum D and the developing sleeve S. And
Considering that the image density (ID) generally becomes dark when the temperature and humidity are high, and becomes light when the temperature and humidity are low, for example, when the image density (ID) becomes low at a low temperature, the peripheral speed ratio (S /
It was examined whether the image density (ID) could be maintained at the normal density by changing D).

【０００６】その結果、現像スリーブＳの周速を大きく
し、周速比（Ｓ／Ｄ）を大にして現像スリーブの回転に
よりトナーをドラムへ多くのせてドラムへの供給量が増
加させる操作を施すだけで、画像濃度（ＩＤ）を上げる
ことができることが分かった。これとは反対で、周速比
（Ｓ／Ｄ）を小にすれば濃過ぎる画像濃度（ＩＤ）を正
常時の濃さに維持できることも分かった。要するに、温
湿度変化に伴い、画像濃度（ＩＤ）の高低に応じて、適
宜、周速比（Ｓ／Ｄ）を変化させることで、現像剤Ｄと
トナーＴとの比（Ｔ／Ｄ）および現像バイアスを変化さ
せる場合に比して、カブリおよびトナー飛散が発生する
のを回避しながら画像濃度（ＩＤ）を正常時の濃さに維
持できることを本発明者らは見出した。As a result, the operation of increasing the peripheral speed of the developing sleeve S, increasing the peripheral speed ratio (S / D), and increasing the toner amount to the drum by the rotation of the developing sleeve to increase the supply amount to the drum. It was found that the image density (ID) can be increased simply by applying. On the contrary, it was also found that the image density (ID) that is too dark can be maintained at the normal density by reducing the peripheral speed ratio (S / D). In short, by changing the peripheral speed ratio (S / D) according to the level of the image density (ID) as the temperature and humidity change, the ratio (T / D) between the developer D and the toner T and The present inventors have found that the image density (ID) can be maintained at the normal density while avoiding the occurrence of fog and toner scattering as compared with the case where the developing bias is changed.

【０００７】かくして、温湿度変化に伴い、現像スリー
ブの回転数を変更して、ドラムと現像スリーブの周速比
を変化させることからなる画像形成装置における画像濃
度維持方法を提供できる。Thus, it is possible to provide an image density maintaining method in an image forming apparatus, which comprises changing the rotational speed of the developing sleeve to change the peripheral speed ratio between the drum and the developing sleeve according to the change in temperature and humidity.

【０００８】また、この画像濃度維持方法が適用されう
る画像形成装置の１つとして、現像スリーブと、ドラム
と、該ドラムを駆動するメインモータと、ドラム側とメ
インモータ側にわたり懸架されたベルトと、前記メイン
モータからの駆動力を受けるベルト受け部、該ベルト受
け部を介して前記メインモータからの駆動力が伝達され
る回転軸およびＶ形の溝を有するプーリと、前記Ｖ形の
溝に嵌入して前記回転軸側と前記現像スリーブ側にわた
り懸架されたＶベルトとを備え、更に、前記プーリが、
前記Ｖ形の溝を形成するとともに前記回転軸の軸方向に
変位して前記Ｖ形の溝の幅を可変にする左右一対のＶベ
ルト受けと、温湿度変化に伴い前記回転軸の軸方向に伸
縮することで、前記幅を可変とし、それによって、前記
ドラムと現像スリーブの周速比を変更せしめうる伸縮部
材とを有するものを挙げることができる。Further, as one of image forming apparatuses to which the image density maintaining method can be applied, a developing sleeve, a drum, a main motor for driving the drum, and a belt suspended between the drum side and the main motor side. A belt receiving portion for receiving a driving force from the main motor, a rotary shaft to which the driving force from the main motor is transmitted via the belt receiving portion and a pulley having a V-shaped groove, and the V-shaped groove. A V-belt fitted and suspended over the rotary shaft side and the developing sleeve side;
A pair of left and right V-belt receivers that form the V-shaped groove and are displaced in the axial direction of the rotary shaft to change the width of the V-shaped groove, and in the axial direction of the rotary shaft with changes in temperature and humidity. By expanding and contracting, the width can be made variable, and thereby, an elastic member that can change the peripheral speed ratio of the drum and the developing sleeve can be mentioned.

【０００９】[0009]

【実施例】以下、この発明の実施例について説明する。
なお、それによってこの発明は限定を受けるものではな
い。図１〜図３はこの発明の第１実施例を示す。図１〜
図３において、画像形成装置は、現像スリーブ１と、ド
ラム２と、ドラム２を伝動体３を介して駆動するメイン
モータ４と、ドラム２の伝動体３とメインモータ４（ド
ラム側とメインモータ側）にわたり懸架されたコックド
ベルト５と、メインモータ４からの駆動力を受けるベル
ト受け部６、ベルト受け部６を介してメインモータ４か
らの駆動力が伝達される回転軸７およびＶ形の溝８を有
するプーリ９と、Ｖ形の溝８に嵌入して回転軸７側と現
像スリーブの伝動体１０（回転軸側と現像スリーブ側）
にわたり懸架されたＶベルト１１とを備え、更に、プー
リ９が、Ｖ形の溝８を形成するとともに回転軸７の軸方
向Ｘに変位してＶ形の溝８の幅Ｗを可変にする左右一対
のＶベルト受け１２，１３と、温湿度変化に伴い回転軸
７の軸方向Ｘに伸縮することで、幅Ｗを可変とし、それ
によって、ドラム２と現像スリーブ１の周速比（Ｓ／
Ｄ）を変更せしめうる伸縮部材１４ａ，１４ｂ，１４ｃ
とを有する。Embodiments of the present invention will be described below.
However, the present invention is not limited thereby. 1 to 3 show a first embodiment of the present invention. Figure 1
In FIG. 3, the image forming apparatus includes a developing sleeve 1, a drum 2, a main motor 4 that drives the drum 2 via a transmission body 3, a transmission body 3 of the drum 2, and a main motor 4 (drum side and main motor). Side), a cocked belt 5 suspended over the belt, a belt receiving portion 6 for receiving a driving force from the main motor 4, a rotary shaft 7 and a V-shaped portion to which the driving force from the main motor 4 is transmitted via the belt receiving portion 6. A pulley 9 having a groove 8 and a transmission member 10 of the developing sleeve fitted in the V-shaped groove 8 (rotating shaft side and developing sleeve side).
A V-belt 11 suspended over the pulley V. Further, the pulley 9 forms a V-shaped groove 8 and is displaced in the axial direction X of the rotary shaft 7 to change the width W of the V-shaped groove 8. By expanding and contracting the pair of V-belt receivers 12 and 13 in the axial direction X of the rotary shaft 7 in accordance with changes in temperature and humidity, the width W is made variable, whereby the peripheral speed ratio (S / S) of the drum 2 and the developing sleeve 1 is changed.
Elastic members 14a, 14b, 14c capable of changing D)
Have and.

【００１０】更に、図４、図５において、伸縮部材１４
ａ，１４ｂ，１４ｃが、温度・湿度が高い場合には伸び
ることでＶベルト受け１２，１３間を遠ざけて溝幅Ｗ1
に広げることにより、Ｖベルト１１をＶ形の溝８に落ち
込ませて現像スリーブ１の伝動体１０の回転数を変更さ
せ（図４参照）、一方、温度・湿度が低い場合には縮む
ことでＶベルト受け１２，１３間を近づけて溝幅Ｗ
2 （＜Ｗ1 ）に狭めることにより、Ｖベルト１１のプー
リ９に対する受け径Ｌを、温度・湿度が高い場合の受け
径Ｎ（＜Ｌ）より大きく設定する（図５参照）構成にな
っている。Further, referring to FIG. 4 and FIG.
When the temperature and humidity are high, a, 14b, and 14c expand to separate the V belt receivers 12 and 13 from each other, and the groove width W 1
By extending the V belt 11 into the V-shaped groove 8 to change the rotation speed of the transmission member 10 of the developing sleeve 1 (see FIG. 4), the V belt 11 contracts when the temperature and humidity are low. V-belt receivers 12 and 13 should be close to each other and groove width W
By narrowing to 2 (<W 1 ), the receiving diameter L of the V-belt 11 for the pulley 9 is set to be larger than the receiving diameter N (<L) when the temperature and humidity are high (see FIG. 5). There is.

【００１１】この実施例のものは上記構成を有するか
ら、例えば、低温時に画像濃度（ＩＤ）が薄くなる場合
において、伸縮部材１４ａ，１４ｂ，１４ｃ（図３、図
５参照）が縮むことでＶベルト受け１２，１３間を近づ
けて溝幅Ｗ2 （＜Ｗ1 ）に狭める。これにより、Ｖベル
ト１１の受け径が現像スリーブ１の周速（Ｓ）を大きく
できる径Ｌに変化する。その結果、周速比（Ｓ／Ｄ）を
大にできて現像スリーブ１の回転によりトナーをドラム
２上へ多くのせてドラム２への供給量が増加させる操作
が施される。Since this embodiment has the above-mentioned structure, for example, when the image density (ID) becomes low at low temperature, the expansion / contraction members 14a, 14b, 14c (see FIGS. 3 and 5) contract to reduce V. The belt receivers 12 and 13 are brought close to each other to narrow the groove width to W 2 (<W 1 ). As a result, the receiving diameter of the V-belt 11 changes to the diameter L that can increase the peripheral speed (S) of the developing sleeve 1. As a result, the peripheral speed ratio (S / D) can be increased, and the rotation of the developing sleeve 1 increases the amount of toner on the drum 2 to increase the supply amount to the drum 2.

【００１２】このように本実施例では、低温時、伸縮部
材１４ａ，１４ｂ，１４ｃが縮むことによりＶベルト１
１のプーリ９に対する受け径Ｌを、温度・湿度が高い場
合の受け径Ｎ（＜Ｌ）より大きく設定して周速比（Ｓ／
Ｄ）を大に変化させることができ、ドラム２への現像剤
の供給量を増加でき、画像濃度が薄くなるのを防止でき
る。As described above, in this embodiment, at the time of low temperature, the elastic members 14a, 14b, 14c contract, so that the V-belt 1
The receiving diameter L for the pulley 9 of 1 is set larger than the receiving diameter N (<L) when the temperature and humidity are high, and the peripheral speed ratio (S /
D) can be largely changed, the supply amount of the developer to the drum 2 can be increased, and the image density can be prevented from becoming thin.

【００１３】一方、温度・湿度が高い場合には、図４に
示すように、伸縮部材１４ａ，１４ｂ，１４ｃが伸びる
ことで受け径Ｎを低温時の場合の受け径Ｌより小さく設
定して現像スリーブ１の周速（Ｓ）を小さくし、周速比
（Ｓ／Ｄ）を小に変化させることによりドラム２への現
像剤の供給量を少なくでき、画像濃度が濃くなり過ぎる
のを防止できる。On the other hand, when the temperature and humidity are high, as shown in FIG. 4, the expansion and contraction members 14a, 14b and 14c are expanded so that the receiving diameter N is set smaller than the receiving diameter L at the time of low temperature development. By reducing the peripheral speed (S) of the sleeve 1 and changing the peripheral speed ratio (S / D) to a small value, the amount of developer supplied to the drum 2 can be reduced, and the image density can be prevented from becoming too high. .

【００１４】次に、図６は、温湿度センサー１４を設
け、コントローラ１５を介して現像スリーブ１の回転数
を変更して、ドラム２と現像スリーブ１の周速比（Ｓ／
Ｄ）を温湿度変化に応じて変化させるようにしたこの発
明の第２実施例を示す。Next, in FIG. 6, a temperature / humidity sensor 14 is provided, and the rotation speed of the developing sleeve 1 is changed via the controller 15 to change the peripheral speed ratio (S / S) between the drum 2 and the developing sleeve 1.
A second embodiment of the present invention in which D) is changed according to the change in temperature and humidity is shown.

【００１５】図６において、Ｍ1 はドラム駆動用モータ
であり、Ｍ2 は現像スリーブ駆動用モータであり、温湿
度センサー１４によって現像スリーブ１の回転数が制御
される構成になっている。In FIG. 6, M 1 is a drum driving motor, M 2 is a developing sleeve driving motor, and the rotational speed of the developing sleeve 1 is controlled by the temperature / humidity sensor 14.

【００１６】[0016]

【発明の効果】以上のようにこの発明では、温湿度変化
に伴い、現像スリーブの回転数を変更して、ドラムと現
像スリーブの周速比を変化させるようにしたので、カブ
リおよびトナー飛散を発生させること無く、かつ温湿度
変化の影響を受けることなく、安定した画像濃度を維持
できる効果がある。As described above, in the present invention, the rotational speed of the developing sleeve is changed in accordance with the change in temperature and humidity to change the peripheral speed ratio between the drum and the developing sleeve. Therefore, fog and toner scattering are prevented. There is an effect that a stable image density can be maintained without being generated and without being affected by a change in temperature and humidity.

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

【図１】この発明の第１実施例を説明するための全体構
成説明図である。FIG. 1 is an overall configuration explanatory diagram for explaining a first embodiment of the present invention.

【図２】上記実施例における要部構成説明図である。FIG. 2 is an explanatory diagram of a main part configuration in the embodiment.

【図３】同じく上記実施例における要部構成説明図であ
る。FIG. 3 is an explanatory diagram of a main part configuration in the same example.

【図４】上記実施例における低温時の動作を示す要部構
成説明図である。FIG. 4 is an explanatory diagram of a main part configuration showing an operation at a low temperature in the above embodiment.

【図５】上記実施例における高温時の動作を示す要部構
成説明図である。FIG. 5 is an explanatory diagram of a main part configuration showing an operation at a high temperature in the above embodiment.

【図６】この発明の第２実施例を説明するための構成説
明図である。FIG. 6 is a structural explanatory view for explaining a second embodiment of the present invention.

【符号の説明】[Explanation of symbols]

１…現像スリーブ、２…ドラム、３…ドラムの伝動体、
４…メインモータ、５…コックドベルト、６…ベルト受
け部、７…プーリ回転軸、８…Ｖ形の溝、９…プーリ、
１０…現像スリーブの伝動体、１１…Ｖベルト、１２，
１３…一対のＶベルト受け、１４ａ，１４ｂ，１４ｃ…
伸縮部材、Ｘ…プーリの軸方向。1 ... developing sleeve, 2 ... drum, 3 ... drum transmission body,
4 ... Main motor, 5 ... Cocked belt, 6 ... Belt receiving part, 7 ... Pulley rotating shaft, 8 ... V-shaped groove, 9 ... Pulley,
10 ... Transmission member of developing sleeve, 11 ... V belt, 12,
13 ... A pair of V belt receivers, 14a, 14b, 14c ...
Elastic member, X ... Axial direction of pulley.

───────────────────────────────────────────────────── フロントページの続き (72)発明者 伊藤 幸洋 大阪市中央区玉造１丁目２番28号 三田工 業株式会社内 (72)発明者 山本 真司 大阪市中央区玉造１丁目２番28号 三田工 業株式会社内 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yukihiro Ito 1-2-2 Tamatsukuri, Chuo-ku, Osaka Mita Kogyo Co., Ltd. (72) Shinji Yamamoto 1-2-2 Tamatsukuri, Chuo-ku, Osaka Mita Within Kogyo Co., Ltd.

Claims (2)

【特許請求の範囲】[Claims] 【請求項１】 温湿度変化に伴い、現像スリーブの回転
数を変更して、ドラムと現像スリーブの周速比を変化さ
せることからなる画像形成装置における画像濃度維持方
法。1. An image density maintaining method in an image forming apparatus, which comprises changing the rotational speed of a developing sleeve to change the peripheral speed ratio between a drum and the developing sleeve in accordance with changes in temperature and humidity. 【請求項２】 現像スリーブと、ドラムと、該ドラムを
駆動するメインモータと、ドラム側とメインモータ側に
わたり懸架されたベルトと、前記メインモータからの駆
動力を受けるベルト受け部、該ベルト受け部を介して前
記メインモータからの駆動力が伝達される回転軸および
Ｖ形の溝を有するプーリと、前記Ｖ形の溝に嵌入して前
記回転軸側と前記現像スリーブ側にわたり懸架されたＶ
ベルトとを備え、更に、前記プーリが、前記Ｖ形の溝を
形成するとともに前記回転軸の軸方向に変位して前記Ｖ
形の溝の幅を可変にする左右一対のＶベルト受けと、温
湿度変化に伴い前記回転軸の軸方向に伸縮することで、
前記幅を可変とし、それによって、前記ドラムと現像ス
リーブの周速比を変更せしめうる伸縮部材とを有する画
像形成装置。2. A developing sleeve, a drum, a main motor for driving the drum, a belt suspended between the drum side and the main motor side, a belt receiving portion for receiving a driving force from the main motor, and the belt receiver. A pulley having a rotary shaft and a V-shaped groove to which the driving force from the main motor is transmitted via a portion, and a V fitted into the V-shaped groove and suspended over the rotary shaft side and the developing sleeve side.
A belt, wherein the pulley forms the V-shaped groove and is displaced in the axial direction of the rotating shaft to form the V-shaped groove.
By the pair of left and right V-belt receivers that make the width of the groove of the shape variable, and by expanding and contracting in the axial direction of the rotating shaft according to temperature and humidity changes,
An image forming apparatus having a variable width and an elastic member capable of changing the peripheral speed ratio of the drum and the developing sleeve.
JP5307419A 1993-11-13 1993-11-13 Image forming device and image density maintaining method therefor Pending JPH07140739A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5307419A JPH07140739A (en) 1993-11-13 1993-11-13 Image forming device and image density maintaining method therefor

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5307419A JPH07140739A (en) 1993-11-13 1993-11-13 Image forming device and image density maintaining method therefor

Publications (1)

Publication Number Publication Date
JPH07140739A true JPH07140739A (en) 1995-06-02

Family

ID=17968836

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5307419A Pending JPH07140739A (en) 1993-11-13 1993-11-13 Image forming device and image density maintaining method therefor

Country Status (1)

Country Link
JP (1) JPH07140739A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2013033293A (en) * 2012-11-12 2013-02-14 Kyocera Document Solutions Inc Image forming apparatus
US8463162B2 (en) 2008-09-04 2013-06-11 Konica Minolta Business Technologies, Inc. Image forming apparatus

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8463162B2 (en) 2008-09-04 2013-06-11 Konica Minolta Business Technologies, Inc. Image forming apparatus
JP2013033293A (en) * 2012-11-12 2013-02-14 Kyocera Document Solutions Inc Image forming apparatus

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