JPH01105949U - - Google Patents
Info
- Publication number
- JPH01105949U JPH01105949U JP143488U JP143488U JPH01105949U JP H01105949 U JPH01105949 U JP H01105949U JP 143488 U JP143488 U JP 143488U JP 143488 U JP143488 U JP 143488U JP H01105949 U JPH01105949 U JP H01105949U
- Authority
- JP
- Japan
- Prior art keywords
- transfer sheet
- warpage
- transfer
- charge carrier
- separation
- 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
Links
- 238000000926 separation method Methods 0.000 claims description 8
- 238000001514 detection method Methods 0.000 claims description 4
- 239000002800 charge carrier Substances 0.000 claims 3
- 238000004140 cleaning Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000003287 optical effect Effects 0.000 description 1
- 108091008695 photoreceptors Proteins 0.000 description 1
Landscapes
- Paper Feeding For Electrophotography (AREA)
- Electrostatic Charge, Transfer And Separation In Electrography (AREA)
Description
第１図は、第２図の複写機に備わつた分離制御
ユニツトの構成を示すブロツク図である。第２図
は、本考案を実施する一形式の複写機の機構部の
構成を示す正面図である。第３ａ図は２種類の転
写紙Ｇ，Ｈの相対湿度と含水分率との相関を示す
グラフ、第３ｂ図は転写紙Ｇ，Ｈの含水分率と反
り量Ｃとの相関を示すグラフである。第４ａ図及
び第４ｂ図は、反りを生じた転写紙の例をそれぞ
れ示す斜視図である。第５図は、反りを生じた転
写紙を１０枚重ねた状態を示す正面図である。第
６図は、分離電流と、分離特性及び画像品質との
相関を示すグラフである。第７ａ図及び第７ｂ図
は、各々、進行方向に対して反りを生じた転写紙
に対する分離電流の制御を示すタイミングチヤー
トである。第８ａ図、第８ｂ図及び第８ｃ図は、
第２図の複写機に備わつた分離チヤージヤ５の、
互いに導電部材５ａ，５ｂの位置を変えて示す斜
視図である。
１：感光体ベルト、２：帯電チヤージヤ、３：
現像ユニツト、４：転写チヤージヤ、５：分離チ
ヤージヤ、５ａ，５ｂ：導電部材、５ｃ：ケーシ
ング、５ｄ：チヤージワイヤ、５ｅ，５ｆ：エン
ドブロツク、６：クリーニングユニツト、７：レ
ジストローラ、８：定着器、２１：交流電源、２
２：直流バイアス電源、５０：複写機本体、５１
：原稿搬送ユニツト、５２：光学走査系、５３：
第１給紙装置、５４：第２給紙装置、５５：第３
給紙装置、５６：両面トレー、５７：排紙トレー
、６０：第４給紙装置、７０：ソータ、８０：フ
イニツシヤ、１００：マイクロプロセツサ（制御
手段）、１３０：カール検知ユニツト（反り検知
手段）。
FIG. 1 is a block diagram showing the configuration of a separation control unit provided in the copying machine of FIG. 2. FIG. 2 is a front view showing the structure of a mechanical section of one type of copying machine implementing the present invention. Figure 3a is a graph showing the correlation between the relative humidity and moisture content of two types of transfer papers G and H, and Figure 3b is a graph showing the correlation between the moisture content and the amount of warpage C of transfer papers G and H. be. FIGS. 4a and 4b are perspective views respectively showing examples of warped transfer paper. FIG. 5 is a front view showing a state in which ten sheets of warped transfer paper are piled up. FIG. 6 is a graph showing the correlation between separation current, separation characteristics, and image quality. FIGS. 7a and 7b are timing charts showing control of separation current for transfer paper that is warped in the direction of travel. Figures 8a, 8b and 8c are
The separation charger 5 provided in the copying machine shown in FIG.
FIG. 6 is a perspective view showing conductive members 5a and 5b in different positions. 1: Photoreceptor belt, 2: Charger, 3:
Developing unit, 4: Transfer charger, 5: Separation charger, 5a, 5b: Conductive member, 5c: Casing, 5d: Charge wire, 5e, 5f: End block, 6: Cleaning unit, 7: Registration roller, 8: Fixing device, 21: AC power supply, 2
2: DC bias power supply, 50: Copying machine body, 51
: Original transport unit, 52: Optical scanning system, 53:
1st paper feeder, 54: 2nd paper feeder, 55: 3rd paper feeder
Paper feeding device, 56: double-sided tray, 57: paper ejection tray, 60: fourth paper feeding device, 70: sorter, 80: finisher, 100: microprocessor (control means), 130: curl detection unit (warp detection means) ).
Claims (1)
体に転写シートを当接して該転写シートに像を転
写し、前記電荷担持体の近傍に配置された分離手
段によつて前記転写シートを前記電荷担持体から
分離する静電転写型画像記録装置において： 前記転写シートの搬送経路中に設けられ該転写
シートの反り量を検知する反り検知手段；及び該
反り検知手段が検知した反り量に応じて前記分離
手段に流す電流を制御する制御手段を設けたこと
を特徴とする、静電転写型画像記録装置。[Claims for Utility Model Registration] A transfer sheet is brought into contact with a charge carrier on which an electrostatic latent image or a visible image is formed, and the image is transferred to the transfer sheet, and a separation device is provided near the charge carrier. In an electrostatic transfer type image recording device that separates the transfer sheet from the charge carrier by means: a warpage detection means provided in a conveying path of the transfer sheet and detecting an amount of warpage of the transfer sheet; An electrostatic transfer type image recording apparatus, comprising a control means for controlling a current flowing through the separation means in accordance with the amount of warpage detected by the detection means.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP143488U JPH0617128Y2 (en) | 1988-01-09 | 1988-01-09 | Electrostatic transfer image recording device |
| US07/196,482 US4926358A (en) | 1987-05-20 | 1988-05-20 | System for controlling curls of a paper |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP143488U JPH0617128Y2 (en) | 1988-01-09 | 1988-01-09 | Electrostatic transfer image recording device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPH01105949U true JPH01105949U (en) | 1989-07-17 |
| JPH0617128Y2 JPH0617128Y2 (en) | 1994-05-02 |
Family
ID=31201315
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP143488U Expired - Lifetime JPH0617128Y2 (en) | 1987-05-20 | 1988-01-09 | Electrostatic transfer image recording device |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0617128Y2 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001117373A (en) * | 1999-10-15 | 2001-04-27 | Hitachi Ltd | Image forming device |
-
1988
- 1988-01-09 JP JP143488U patent/JPH0617128Y2/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001117373A (en) * | 1999-10-15 | 2001-04-27 | Hitachi Ltd | Image forming device |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0617128Y2 (en) | 1994-05-02 |
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