JPH01197785A - Electrophotographic recorder - Google Patents
Electrophotographic recorderInfo
- Publication number
- JPH01197785A JPH01197785A JP63022462A JP2246288A JPH01197785A JP H01197785 A JPH01197785 A JP H01197785A JP 63022462 A JP63022462 A JP 63022462A JP 2246288 A JP2246288 A JP 2246288A JP H01197785 A JPH01197785 A JP H01197785A
- Authority
- JP
- Japan
- Prior art keywords
- toner
- latent image
- photoreceptor
- image part
- counter electrode
- 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
- 230000005684 electric field Effects 0.000 claims abstract description 9
- 108091008695 photoreceptors Proteins 0.000 claims description 36
- 238000000034 method Methods 0.000 description 6
- 238000007790 scraping Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 238000010186 staining Methods 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 2
- 229910052782 aluminium Inorganic materials 0.000 description 2
- 238000004140 cleaning Methods 0.000 description 2
- 239000004020 conductor Substances 0.000 description 2
- 230000006866 deterioration Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000009191 jumping Effects 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 230000001105 regulatory effect Effects 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
Landscapes
- Dry Development In Electrophotography (AREA)
- Cleaning In Electrography (AREA)
Abstract
Description
【発明の詳細な説明】
［産業上の利用分野］
本発明は、複写機などに用いられる電子写真記録装置に
関するものであり、さらに詳しくは感光体の静電潜像部
具外の個所に付着したトナーを除去する手段を備えた電
子写真記録装置に関するものである。Detailed Description of the Invention [Field of Industrial Application] The present invention relates to an electrophotographic recording device used in copying machines, etc. The present invention relates to an electrophotographic recording apparatus equipped with a means for removing toner.
［従来技術とその問題点］
従来から、複写機などの電子写真記録装置では、磁気ブ
ラシ法、パウダクラウド法、ジャンピング現像法などの
種々の現像方法が用いられており、これらの現像法によ
って感光体に形成された静電潜像上にトナーを付着させ
、感光体表面に静電潜像に応じたトナー像を形成するよ
うにしている。[Prior art and its problems] Conventionally, electrophotographic recording devices such as copying machines have used various developing methods such as the magnetic brush method, powder cloud method, and jumping developing method. Toner is attached onto the electrostatic latent image formed on the photoreceptor, and a toner image corresponding to the electrostatic latent image is formed on the surface of the photoreceptor.
しかしながら、感光体に付着したトナーの中には、感光
体や現像装置の振動、トナーの帯電不足、現像電界の乱
れ、など種々の原因によって、潜像部以外の個所に付着
してしまうものがある。そのため、この潜像部以外の個
所に付着したトナーは記録媒体に転写°されてカブリや
汚れとなり、転写画像の品質を低下せしめる原因となっ
ている。However, some of the toner that adheres to the photoreceptor may adhere to areas other than the latent image area due to various reasons such as vibration of the photoreceptor or developing device, insufficient charging of the toner, and disturbance of the developing electric field. be. Therefore, the toner adhering to areas other than the latent image area is transferred to the recording medium and causes fogging and staining, which causes deterioration in the quality of the transferred image.
［発明の目的］
そこで本発明の目的は、潜像部以外の個所に付着したト
ナーによるカブリや汚れを防止し、転写画像の品質を向
上せしめることにある。[Object of the Invention] Therefore, an object of the present invention is to prevent fogging and staining caused by toner adhering to areas other than the latent image area, and to improve the quality of transferred images.
［問題点を解決するための手段］
本発明の特徴は、静電潜像が形成される感光体と、感光
体に対向するように設けてあり、あらかじめ帯電したト
ナーを感光体の潜像部上に付着させる現像手段と、現像
手段の下流側に上記感光体に対向するように設けてあり
、感光体に付着したトナーを記録媒体に転写せしめる転
写手段と、現像手段と転写手段との間に、上記感光体と
対向するように設けてありかつ上記感光体の非潜像部に
付着しているトナーを電界の作用で除去する対向電極と
を具備するところにある。[Means for Solving the Problems] The present invention is characterized by a photoconductor on which an electrostatic latent image is formed, and a photoconductor that is disposed to face the photoconductor, and that applies pre-charged toner to the latent image area of the photoconductor. a developing means to be deposited on the toner; a transfer means provided downstream of the developing means to face the photoreceptor and for transferring the toner adhered to the photoreceptor onto the recording medium; and between the developing means and the transfer means. The image forming apparatus further includes a counter electrode that is provided to face the photoreceptor and removes toner adhering to a non-latent image area of the photoreceptor by the action of an electric field.
［実施例コ
第１図に示すように感光体としての感光体ドラム１は、
感光層１ａと導電層１ｂとからなっており、導電層１ｂ
は接地されている。感光体１の周囲には、上流側から順
に帯電手段２．露光手段３゜現像手段４．対向電極５．
転写手段６．クリーニング手段７．除電手段８が配設し
てあり、感光体１は、図示しない駆動機構により矢印Ａ
１方向に回転されるようになっている。なお感光体１は
、帯電手段２によって帯電された後、露光手段３を介し
て所定のパターンの静電潜像が形成されるわけであるが
、本実施例では、第２図に示す潜像部９および非潜像部
１０の電位がそれぞれ一１００Ｖ、−７００Ｖになるよ
うに設定しである。なお、第２図は本発明の原理説明図
であって、原理説明上不要な部分は省略しである。[Example 1] As shown in FIG. 1, a photosensitive drum 1 as a photosensitive member was
It consists of a photosensitive layer 1a and a conductive layer 1b, and the conductive layer 1b
is grounded. Around the photoreceptor 1, charging means 2. Exposure means 3゜Development means 4. Counter electrode 5.
Transfer means 6. Cleaning means 7. A static eliminating means 8 is provided, and the photoreceptor 1 is moved by an arrow A by a drive mechanism (not shown).
It is designed to rotate in one direction. After the photoreceptor 1 is charged by the charging means 2, an electrostatic latent image of a predetermined pattern is formed through the exposure means 3. In this embodiment, the latent image shown in FIG. The potentials of the portion 9 and the non-latent image portion 10 are set to -100V and -700V, respectively. Note that FIG. 2 is a diagram illustrating the principle of the present invention, and parts unnecessary for explaining the principle are omitted.
現像手段４は、トナー容器４１．スリーブ４２゜マグネ
ットローラ４゛３およびドクターブレード４４とからな
っており、トナー容器４１には磁性トナー１１が収容さ
れている。スリーブ４２は、アルミニウムなどの導電体
で形成されたものであって、感光体１の潜像部９との間
に現像用電界を形成するバイアス電圧ｖ１が印加しであ
る。なおスリーブ４２は、図示しない駆動機構によって
矢印Ａ２方向に回転されるようになっている。このバイ
アス電圧ｖ１は、スリーブ上４２に付着したトナー１１
を帯電させる帯電手段としての機能をも有しており、本
実施例ではＶｌ−−６００Ｖに設定しである。マグネッ
トローラ４３はスリーブ４２の内部に固定的に配設され
ている。The developing means 4 includes a toner container 41. The sleeve 42 is made up of a magnet roller 4-3 and a doctor blade 44, and a toner container 41 contains magnetic toner 11. The sleeve 42 is made of a conductive material such as aluminum, and a bias voltage v1 is applied thereto to form a developing electric field between the sleeve 42 and the latent image portion 9 of the photoreceptor 1. Note that the sleeve 42 is rotated in the direction of arrow A2 by a drive mechanism (not shown). This bias voltage v1 is applied to the toner 11 attached to the sleeve top 42.
It also has a function as a charging means for charging the voltage, and in this embodiment, it is set to Vl--600V. The magnet roller 43 is fixedly disposed inside the sleeve 42.
対向電極５は、スリーブ形状をなしており、アルミニウ
ムなどの導電体にて形成されている。対向電極５には、
バイアス電圧ｖ２が印加してあり、それによって対向電
極５と感光体１の非潜像部１０との間には非潜像部１０
に付着したトナーを除去するための電界されている。な
お本実施例ではバイアス電圧ｖ２を一３００ｖに設定し
てあり、対向電極５は図示しない駆動機構により矢印へ
３方向に回転されるようになっている。対向電極５の内
部にはマグネットローラ１２が固定的に・配設されてい
る。１３は対向電極５に付着したトナーを除去するかき
とり部材であって、その先端は対向電極の外周面に当接
している。１４はかきとり部材１３によって除去された
トナーを回収する回収容器であり、１５は記録紙などの
記録媒体である。The counter electrode 5 has a sleeve shape and is made of a conductive material such as aluminum. The counter electrode 5 has
A bias voltage v2 is applied, so that a non-latent image area 10 is formed between the counter electrode 5 and the non-latent image area 10 of the photoreceptor 1.
An electric field is applied to remove the toner that has adhered to it. In this embodiment, the bias voltage v2 is set to -300V, and the counter electrode 5 is rotated in three directions indicated by arrows by a drive mechanism (not shown). A magnet roller 12 is fixedly disposed inside the counter electrode 5 . Reference numeral 13 denotes a scraping member for removing toner adhering to the counter electrode 5, the tip of which is in contact with the outer peripheral surface of the counter electrode. 14 is a collection container for collecting the toner removed by the scraping member 13, and 15 is a recording medium such as recording paper.
次ニ動作について説明する。Next, the second operation will be explained.
第１図において、感光体１は先ず帯電手段２によって一
７００ｖに帯電された後、矢印Ａ１の方向に回転される
ことにより露光手段３との対向位置に至り、露光手段３
を介して所定の画像パターンに露光される。これにより
第２図に示すように、感光体１の露光部が導電性を呈し
、露光部におけるマイナス電荷が導電層１ｂを介してリ
ークされる。これにより、感光体１において露光された
部分が潜像部９（第２図示）となり、露光されなかった
部分が非潜像部１０（第２図示）となる。なおこのとき
、潜像部９の電位が一１００ｖとなり非潜像部（非露光
部）１０（第２図示）の電位が一７００Ｖとなる。そし
てその後、感光体１はさらに回転して現像手段４のスリ
ーブ４２との対向部に至る。In FIG. 1, the photoreceptor 1 is first charged to -700V by the charging means 2, and then rotated in the direction of arrow A1 to a position facing the exposure means 3.
through which a predetermined image pattern is exposed. As a result, as shown in FIG. 2, the exposed portion of the photoreceptor 1 exhibits conductivity, and negative charges in the exposed portion leak through the conductive layer 1b. As a result, the exposed portion of the photoreceptor 1 becomes a latent image portion 9 (second illustration), and the unexposed portion becomes a non-latent image portion 10 (second illustration). At this time, the potential of the latent image section 9 becomes 1100V, and the potential of the non-latent image section (non-exposed section) 10 (shown in the second diagram) becomes 1700V. Thereafter, the photoreceptor 1 further rotates and reaches a portion facing the sleeve 42 of the developing means 4.
現像手段４において、スリーブ４２に付着したトナー１
１は、スリーブ４２上でバイアス電圧Ｖｌ （−６００
Ｖ）によりマイナス帯電される。In the developing means 4, the toner 1 attached to the sleeve 42
1 is the bias voltage Vl (-600
V), it is negatively charged.
このトナー１１はスリーブ４２が矢印Ａ２方向に回転さ
れることによって搬送され、ドクターブレード４４（第
１図示）にて所定の層厚に規制された後、感光体１との
対向部、すなわち現像部に至る。This toner 11 is conveyed by rotating the sleeve 42 in the direction of arrow A2, and after being regulated to a predetermined layer thickness by a doctor blade 44 (shown in the first figure), the toner 11 is transferred to a portion facing the photoreceptor 1, that is, a developing portion. leading to.
第２図に示すように、感光体１とスリーブ４２との対向
部（現像部）では、スリーブ４２の電位がバイアス電圧
ｖ１により一６００Ｖとなっており、潜像部９の電位が
−１００，非潜像部１ｏの電位が一７００ｖとなってい
る。このためスリーブ４２上に付着しているマイナス帯
電のトナー１１は、スリーブ４２と潜像部９との間に形
成される現像電界により潜像部９に付着し、トナー像を
形成する。なおこの現像部においては、上述した電位関
係により原理的にはトナー１１が非潜像部１０に付着し
ないようになっているのであるが、トナー１１の中には
、トナー１１ａのように種々の原因によって非潜像部１
０に付着してしまうものがある。As shown in FIG. 2, in the opposing part (developing part) between the photoreceptor 1 and the sleeve 42, the potential of the sleeve 42 is -600V due to the bias voltage v1, and the potential of the latent image part 9 is -100V, The potential of the non-latent image portion 1o is 1700V. Therefore, the negatively charged toner 11 adhering to the sleeve 42 adheres to the latent image part 9 due to the developing electric field formed between the sleeve 42 and the latent image part 9, forming a toner image. In this developing section, the toner 11 is theoretically prevented from adhering to the non-latent image section 10 due to the above-mentioned potential relationship, but there are various types of toner 11 such as toner 11a. Non-latent image area 1 depending on the cause
There are some things that stick to 0.
その後、これらのトナー１１ （トナー１１ａも含む）
は、さらに感光体１が回転することにより対向電極５と
の対向部に搬送される。対向電極５の電位はバイアス電
圧ｖ２により一３００ｖとなっており、潜像部９および
非潜像部１ｏの電位は、前述した現像部と同様にそれぞ
れ一１００Ｖ。After that, these toners 11 (including toner 11a)
As the photoreceptor 1 further rotates, the photoreceptor 1 is transported to a portion facing the counter electrode 5 . The potential of the counter electrode 5 is -300V due to the bias voltage v2, and the potentials of the latent image area 9 and the non-latent image area 1o are each -100V, similar to the aforementioned developing area.
−７００Ｖとなっている。このため、感光体１に付着し
ているトナー１１（マイナス帯電）のうち非潜像部１０
に付着しているトナー１１ａ（マイナス帯電）は、対向
電極５と非潜像部１ｏとの間に形成される電界によって
対向電極５に付着せしめられ非潜像部１０から除去され
る。その後、第１図に示すように、対向電極５に付着し
たトナー１１ａは、対向電極５の矢印Ａ３方向への回転
によって搬送され、かきとり部材１３によってがきとら
れて、トナー回収トレイ１４に回収される。-700V. Therefore, the non-latent image portion 10 of the toner 11 (negatively charged) adhering to the photoreceptor 1
The toner 11a (negatively charged) attached to the counter electrode 5 is made to adhere to the counter electrode 5 by an electric field formed between the counter electrode 5 and the non-latent image section 10, and is removed from the non-latent image section 10. Thereafter, as shown in FIG. 1, the toner 11a attached to the counter electrode 5 is transported by the rotation of the counter electrode 5 in the direction of arrow A3, scraped off by the scraping member 13, and collected in the toner collection tray 14. Ru.
なお潜像部９に付着しているトナー１１は、前述した電
位関係のため、対向電極５に付着せず、潜像部９に安定
して保持される。Note that the toner 11 adhering to the latent image portion 9 does not adhere to the counter electrode 5 and is stably held in the latent image portion 9 due to the above-described potential relationship.
潜像部９に付着しているトナー１１は、感光体１がさら
に回転されることによって転写手段６との対向部に至り
、転写手段６を介して記録媒体１５に転写される。As the photoreceptor 1 is further rotated, the toner 11 adhering to the latent image portion 9 reaches a portion facing the transfer means 6 and is transferred onto the recording medium 15 via the transfer means 6.
その後、感光体１はさらに回転することにょって、クリ
ーニング部材７によって表面に残っているトナー１１を
除去された後、除電手段８によって除電され、再び帯電
手段２との対向部に至る。Thereafter, as the photoreceptor 1 is further rotated, the toner 11 remaining on the surface is removed by the cleaning member 7, and then the charge is removed by the charge removing means 8, and the photoreceptor 1 reaches the portion facing the charging means 2 again.
このように非潜像部１０に付着したトナー１１ａは、転
写手段６に搬送される前に対向電極５によって除去され
、転写手段６との対向部には潜像部９に付着したトナー
１１のみが搬送されるため、記録媒体１５には潜像部９
に付着したトナー１１のみが転写され、非潜像部１０に
付着したトナー１１ａが転写されることがない。したが
って、記録媒体１５にはカブリや汚れのない高品質の転
写画像が形成される。The toner 11a attached to the non-latent image area 10 is removed by the counter electrode 5 before being conveyed to the transfer means 6, and only the toner 11 attached to the latent image area 9 is left in the area facing the transfer means 6. is conveyed, so a latent image portion 9 is formed on the recording medium 15.
Only the toner 11 attached to the non-latent image area 10 is transferred, and the toner 11a attached to the non-latent image area 10 is not transferred. Therefore, a high quality transferred image is formed on the recording medium 15 without fogging or staining.
第３図は第２の実施例を示すものであって、この実施例
において、前述の第１の実施例と実質的に同様な部材に
は同一の符号を付しである。この実施例は、現像手段１
０４の上方に対向電極１０５を配設した構成を有するも
のであって、前述の第１の実施例のものを１８０°回転
せしめた構成になっている。なお感光体１．現像手段１
０４のスリーブ１４２および対向電極１０５の回転方向
は第１の実施例と同方向である。FIG. 3 shows a second embodiment, in which substantially the same members as in the first embodiment described above are given the same reference numerals. In this embodiment, the developing means 1
04, and has a configuration in which a counter electrode 105 is disposed above the electrode 04, and the configuration is rotated by 180 degrees from that of the first embodiment described above. Note that photoreceptor 1. Developing means 1
The direction of rotation of the sleeve 142 and the counter electrode 105 in No. 04 is the same as in the first embodiment.
現像手段１０４は、ドクターブレード１４４がスリーブ
１４２の下方に配設してあり、トナー容器１４１の開口
１４１ａは対向電極手段１０５に向って開口している。In the developing means 104, a doctor blade 144 is disposed below the sleeve 142, and an opening 141a of the toner container 141 opens toward the counter electrode means 105.
対゛内電極１ｏ５（スリーブ形状をしている。）は、こ
の開口１４１ａの直上に位置しており、かきとり部材１
５３は、開口１４１ａの内部に配設しである。なおマグ
ネットローラ１１３は対向電極１０５内に固定的に配設
しである。The inner electrode 1o5 (sleeve-shaped) is located directly above this opening 141a, and the scraping member 1o5 is located directly above this opening 141a.
53 is disposed inside the opening 141a. Note that the magnet roller 113 is fixedly disposed within the counter electrode 105.
したがって、非潜像部がら除去されて対向電極１０５に
付着したトナー１１ａは、対向電極１゜５の矢印Ａ３の
方向の回転により、トナーがりとり部材１５３によって
かきとられ、トナー容器１４１内に落下し、再び現像に
供されることになる。Therefore, the toner 11a that has been removed from the non-latent image area and adhered to the counter electrode 105 is scraped off by the toner scraping member 153 due to the rotation of the counter electrode 1°5 in the direction of arrow A3, and falls into the toner container 141. Then, it will be subjected to development again.
なお上述した各実施例おいて、非潜像部、潜像部、およ
びバイアス電圧Ｖｌ、Ｖ２の各設定電位は、非潜像部の
電位＜Ｖｌ ＜Ｖ２＜潜像部の電位を満足するものであ
れば、適宜変更可能である。In each of the above-mentioned embodiments, the set potentials of the non-latent image area, the latent image area, and the bias voltages Vl and V2 satisfy the following condition: potential of the non-latent image area<Vl<V2<potential of the latent image area. If so, it can be changed as appropriate.
また上述した各実施例では、本発明を負帯電反転現像方
式の電子写真記録装置に適用した例について説明したが
、種々の現像方式にも適用することができ、例えば、正
帯電反転現像方式の場合は、非潜像部、潜像部、および
バイアス電圧Ｖｔ、Ｖ２の各設定電位を、潜像部の電位
＜Ｖ２＜Ｖ ｌ ＜非潜像部の電位、となるようにすれ
ばよい。Furthermore, in each of the above-mentioned embodiments, an example was explained in which the present invention was applied to an electrophotographic recording apparatus using a negative charge reversal development method, but it can also be applied to various development methods. In this case, the set potentials of the non-latent image portion, the latent image portion, and the bias voltages Vt and V2 may be set so that the potential of the latent image portion<V2<V l <the potential of the non-latent image portion.
［発明の効果］
以上詳細に説明したように本発明によれば、現像手段と
転写手段との間に設けた対向電極により、感光体の非潜
像部に付着したトナーを転写部に搬送される前に除去す
ることができ、カブリや汚れが生じることがなくなり転
写画像の品質が向上する。[Effects of the Invention] As described above in detail, according to the present invention, the toner attached to the non-latent image area of the photoreceptor is transported to the transfer unit by the opposing electrode provided between the developing means and the transfer means. This eliminates fogging and stains and improves the quality of transferred images.
第１図は、第１の実施例の概略構成を示す断面図、第２
図は原理説明図、第３図は第２の実施例の概略構成を示
す断面図である。
１・・・・・・感光体、
４．１０４・・・・・・現像手段、
５．１０５・・・・・・対向電極、
６・・・・・・転写手段、
９・・・・・・潜像部、
１０・・・・・・非潜像部。
１１．１１ａ・・・・・・トナー。
以 上FIG. 1 is a sectional view showing the schematic configuration of the first embodiment, and FIG.
The figure is a diagram illustrating the principle, and FIG. 3 is a sectional view showing the schematic configuration of the second embodiment. 1...Photoreceptor, 4.104...Developing means, 5.105...Counter electrode, 6...Transfer means, 9...・Latent image area, 10... Non-latent image area. 11.11a... Toner. that's all
Claims (1)
トナーを上記感光体の潜像部に付着させる現像手段と、 上記現像手段の下流側に上記感光体に対向するように設
けてあり、上記感光体に付着した上記トナーを記録媒体
に転写せしめる転写手段と、上記現像手段と上記転写手
段との間に、上記感光体と対向するように設けてありか
つ上記感光体の非潜像部に付着しているトナーを電界の
作用で除去する対向電極とを具備することを特徴とする
電子写真記録装置。[Scope of Claims] A photoreceptor on which an electrostatic latent image is formed; a developing means provided to face the photoreceptor and for attaching pre-charged toner to the latent image portion of the photoreceptor; A transfer means is provided downstream of the developing means to face the photoreceptor and transfers the toner adhering to the photoreceptor onto a recording medium, and the photoreceptor is provided between the developing means and the transfer means. An electrophotographic recording apparatus comprising: a counter electrode that is disposed to face the photoreceptor and removes toner adhering to a non-latent image area of the photoreceptor by the action of an electric field.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63022462A JPH01197785A (en) | 1988-02-02 | 1988-02-02 | Electrophotographic recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP63022462A JPH01197785A (en) | 1988-02-02 | 1988-02-02 | Electrophotographic recorder |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH01197785A true JPH01197785A (en) | 1989-08-09 |
Family
ID=12083374
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP63022462A Pending JPH01197785A (en) | 1988-02-02 | 1988-02-02 | Electrophotographic recorder |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH01197785A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007091673A1 (en) * | 2006-02-10 | 2007-08-16 | Mitsubishi Heavy Industries, Ltd. | Electronic photography printing apparatus, electronic photography printing method, and sheet glass manufacturing method |
| WO2007145212A1 (en) * | 2006-06-13 | 2007-12-21 | Mitsubishi Heavy Industries, Ltd. | Developing device for electronic photograph printing apparatus, non-picture portion toner removing device, electronic photograph printing apparatus using those devices, electronic photograph printing method, and glass/ceramic plate manufacturing method |
-
1988
- 1988-02-02 JP JP63022462A patent/JPH01197785A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2007091673A1 (en) * | 2006-02-10 | 2007-08-16 | Mitsubishi Heavy Industries, Ltd. | Electronic photography printing apparatus, electronic photography printing method, and sheet glass manufacturing method |
| WO2007145212A1 (en) * | 2006-06-13 | 2007-12-21 | Mitsubishi Heavy Industries, Ltd. | Developing device for electronic photograph printing apparatus, non-picture portion toner removing device, electronic photograph printing apparatus using those devices, electronic photograph printing method, and glass/ceramic plate manufacturing method |
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