JPH0437951U - - Google Patents
Info
- Publication number
- JPH0437951U JPH0437951U JP7830990U JP7830990U JPH0437951U JP H0437951 U JPH0437951 U JP H0437951U JP 7830990 U JP7830990 U JP 7830990U JP 7830990 U JP7830990 U JP 7830990U JP H0437951 U JPH0437951 U JP H0437951U
- Authority
- JP
- Japan
- Prior art keywords
- image
- leading edge
- density
- photoreceptor
- level
- 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
- 108091008695 photoreceptors Proteins 0.000 claims description 5
- 238000004140 cleaning Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000003384 imaging method Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
Landscapes
- Color, Gradation (AREA)
- Fixing For Electrophotography (AREA)
- Paper Feeding For Electrophotography (AREA)
- Exposure Or Original Feeding In Electrophotography (AREA)
- Dot-Matrix Printers And Others (AREA)
Description
第１図は、本考案を一例で実施する複写機の機
構概略を示す側面図である。第２図は、第１図に
示す制御ボード２００の構成概略を示すブロツク
図である。第３図は、第２図に示すバツフアメモ
リ１２０のＣＰＵ１２３の制御動作を示すフロー
チヤートである。
１……感光体（感光体）、２……光学走査系、
２ａ……露光ランプ、２ｂ……第１ミラー、２ｃ
……第２ミラー、２ｄ……第３ミラー、２ｅ……
結像レンズ、３……コンタクトガラス、４……イ
メージセンサ、１０……メインチヤージヤ、１１
……レーザ光、１２……ポリゴンミラー、１３…
…現像ユニツト、１４，１５……カセツト、１６
……レジストローラ、１７……転写チヤージヤ、
１８……分離チヤージヤ、１９……搬送ベルト、
２０……定着ユニツト、２１……クリーニングユ
ニツト、２２……ブレード、２３……ブラシ、２
４……イレーサ（先端部電位調整手段）、５０…
…画像読込みユニツト、１００……プリンタユニ
ツト、１１０……画像処理装置、１２０……バツ
フアメモリ、１２３……ＣＰＵ（濃度検出手段）
、１３０……メイン制御部（先端部記録制御手段
）、２００……制御ボード。
FIG. 1 is a side view schematically showing the mechanism of a copying machine embodying the present invention. FIG. 2 is a block diagram schematically showing the configuration of the control board 200 shown in FIG. 1. As shown in FIG. FIG. 3 is a flowchart showing the control operation of the CPU 123 of the buffer memory 120 shown in FIG. 1... Photoreceptor (photoreceptor), 2... Optical scanning system,
2a...Exposure lamp, 2b...First mirror, 2c
...Second mirror, 2d...Third mirror, 2e...
Imaging lens, 3... Contact glass, 4... Image sensor, 10... Main charger, 11
...Laser light, 12...Polygon mirror, 13...
...Developing unit, 14, 15...Cassette, 16
...Registration roller, 17...Transfer charger,
18...Separation charger, 19...Transport belt,
20... Fixing unit, 21... Cleaning unit, 22... Blade, 23... Brush, 2
4... Eraser (tip part potential adjustment means), 50...
...Image reading unit, 100...Printer unit, 110...Image processing device, 120...Buffer memory, 123...CPU (density detection means)
, 130... Main control unit (tip recording control means), 200... Control board.
Claims (1)
ジタル信号処理し、該信号に対応したレーザ光を
予め一様に荷電した感光体に照射して潜電静像を
形成しこれを現像するデジタル複写装置において
、 感光体上の原稿の先端部に対応する部位を、選
択的に非記録レベルの電位に調整するための先端
部電位調整手段； 原稿の先端部の画像濃度を検出する濃度検出手
段； 該濃度検出手段が検出した画像濃度に対応して
それが所定レベル以上のとき前記先端部電位調整
手段により感光体上の原稿の先端部に対応する部
位を非記録レベルとし、所定レベル未満のときは
記録レベルとする先端部記録制御手段；を備える
ことを特徴とする、デジタル複写装置。[Claim for Utility Model Registration] Image information read by exposure scanning of a manuscript image is processed into digital signals, and a laser beam corresponding to the signal is irradiated onto a pre-uniformly charged photoreceptor to form a latent electrostatic image. In a digital copying apparatus that forms and develops an image of the leading edge of a document, a leading edge potential adjusting means for selectively adjusting a portion of the photoreceptor corresponding to the leading edge of the document to a non-recording level; Density detecting means for detecting the density; corresponding to the image density detected by the density detecting means, when the image density is equal to or higher than a predetermined level, the tip potential adjusting means causes the portion corresponding to the leading edge of the document on the photoreceptor to be non-recorded; A digital copying apparatus, characterized in that the digital copying apparatus is provided with: a leading end recording control means that sets the recording level when the level is lower than a predetermined level.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7830990U JPH0437951U (en) | 1990-07-24 | 1990-07-24 |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP7830990U JPH0437951U (en) | 1990-07-24 | 1990-07-24 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH0437951U true JPH0437951U (en) | 1992-03-31 |
Family
ID=31621469
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP7830990U Pending JPH0437951U (en) | 1990-07-24 | 1990-07-24 |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0437951U (en) |
-
1990
- 1990-07-24 JP JP7830990U patent/JPH0437951U/ja active Pending
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS59157669A (en) | Automatic developing bias controller | |
| JPH0375465U (en) | ||
| JPH02150869A (en) | Image forming device | |
| JPS597354A (en) | Copy machine original density detection device | |
| JP2001160893A (en) | Document reader and image forming device | |
| JPH02123166U (en) | ||
| JPH0520039Y2 (en) | ||
| JPH0895461A (en) | Image forming device | |
| JPS63153250U (en) | ||
| JPH04157482A (en) | Color image forming device | |
| JP2007201642A (en) | Image reader and image-forming device having the same | |
| US5072260A (en) | Image forming apparatus having analog and digital exposure means | |
| JPH0258251U (en) | ||
| JPH0326834B2 (en) | ||
| JPH0450689Y2 (en) | ||
| JP2546260B2 (en) | Copier | |
| JPH0413953U (en) | ||
| JPS62151836A (en) | Image density control device | |
| JPS62169182A (en) | Image density adjustment method for copying machines, etc. | |
| JP2005049737A (en) | Image scanner and image forming apparatus | |
| JPH11327224A (en) | Potential control method for image forming device and image forming device | |
| JPS61188155U (en) | ||
| JPS6078049U (en) | electronic recording device | |
| JPH05333450A (en) | Image forming device | |
| JPH10213761A (en) | Optical scanning device |