JP2010072570A - 画像形成方法 - Google Patents
画像形成方法 Download PDFInfo
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- JP2010072570A JP2010072570A JP2008242856A JP2008242856A JP2010072570A JP 2010072570 A JP2010072570 A JP 2010072570A JP 2008242856 A JP2008242856 A JP 2008242856A JP 2008242856 A JP2008242856 A JP 2008242856A JP 2010072570 A JP2010072570 A JP 2010072570A
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- toner
- recording medium
- image forming
- forming method
- fixing
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Landscapes
- Fixing For Electrophotography (AREA)
- Developing Agents For Electrophotography (AREA)
Abstract
【解決手段】記録媒体をプレヒート機構で予熱する熱圧力定着により、トナーを前記記録媒体に定着させる工程を含む画像形成方法であって、前記トナーの50℃での貯蔵弾性率が2.00×107〜5.00×107Paである、画像形成方法。
【選択図】なし
Description
で表されるビスフェノールAのアルキレンオキサイド付加物が好ましい。かかるビスフェノールAのアルキレンオキサイド付加物の含有量は、アルコール成分中、50モル%以上が好ましく、60モル%以上がより好ましく、80モル%以上がさらに好ましい。
粘弾性測定装置(レオメーター)ARES(TA社製)を用いて測定を行う。
Diameter = 25.0 [mm]
Gap = 1.5〜2.5 [mm]
Read Test Fixture Gap = On
Tool Serial Num = 0000
Tool Inertia ......... = 58.0 [g・cm2]
Change Gap to Match Tool Thermal Expansion = Off
Tool Thermal Expansion Coefficient = 2.3 [μm/℃]
Fluid Density........ = 1.0 [g/cm3]
Fixture Compliance = 0.524 [μrad/g-cm]
Frequency = 6.28 [rad/s]
Initial Temp. = 140.0 [℃]
Final Temp. = 30.0, 180.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 [℃]
Ramp Rate = 20.0, 5.0, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 [℃/min.]
Computed Ramp Time = 5:00, 28:00, 0, 0, 0, 0, 0, 0 [h:m:s]
Soak Time After Ramp = 360, 0, 0, 0, 0, 0, 0, 0 [s or h:m:s]
Time Per Measure = 24, 12, 0, 0, 0, 0, 0, 0 [s or h:m:s]
Strain = 0.05, 0.05, 0.0, 0.0, 0.0, 0.0, 0.0, 0.0 [%]
Computed Test Duration = 39:00 [h:m:s]
Zone Time = 660, 28:00, 0, 0, 0, 0, 0, 0 [s or h:m:s]
Options = Steady PreShear
Steady PreShear = Off
PreShear Mode = Preshear Off
Delay Before Test = Off
Automatically start test when on Temperature = Off
AutoTension Adjustment = On
Mode = Apply Constant Static Force
AutoTension Direction = Compression
Initial Static Force = 10.0 [g]
AutoTension Sensitivity = 10.0 [g]
When Sample Modulus < = 100.0 [Pa]
AutoTension Limits = Default
Max Autotension Displacement = 3.0 [mm]
Max Autotension Rate = 0.01 [mm/s]
AutoStrain = On
Max Applied Strain = 20.0 [%]
Max Allowed Torque = 300.0 [g-cm]
Min Allowed Torque = 1.0 [g-cm]
Strain Adjustment = 20.0 [% of Current Strain]
Strain Amplitude Control = Default Behavior
Limit Minimum Dynamic Force Used = No
Minimum Applied Dynamic Force = 1.0 [gmf]
Measurement Options = Default Delay Settings
Cycles = 0.5 []
Time = 3 [s or h:m:s]
Correlation: One Cycle Correlate = Off
ElectroRheology Mode = Off
Turn OFF Motor = No
Turn Hold ON = Yes
Turn OFF Temp Controller = No
Set End of Test Temp = Yes
Set End of Test Temp to: = 150.0 [℃]
Oven Air/N2 Switch = Force Air
Dielectric Testing = Off
Steady Stress on Dynamic = 0.0 [Pa]
Analog Data Collection = Off
External Correlation = Off
Measurement Time = 1.0 [s]
Correlation Cycles = 1 []
Enable External Trigger = Off
Delay before initial trigger = 5.0 [s]
Trigger On Time = 2.0 [s]
Trigger Off Time = 2.0 [s]
Number of On/Off Cycles = 1 []
Geometry:Parallel Plate(25mm)
Radius:12.5(mm)
フローテスター(島津製作所、CFT-500D)を用い、1gの試料を昇温速度6℃/分で加熱しながら、プランジャーにより1.96MPaの荷重を与え、直径1mm、長さ1mmのノズルから押出する。温度に対し、フローテスターのプランジャー降下量をプロットし、試料の半量が流出する温度を軟化点とする。
示差走査熱量計(セイコー電子工業社製、DSC210)を用いて昇温速度10℃/minで200℃まで昇温し、降温速度10℃/minで0℃まで冷却した試料を昇温速度10℃/minで測定を開始する。ガラス転移点以下のベースラインの延長線とピークの立ち上がり部分からピークの頂点までの間の最大傾斜を示す接線との交点の温度を、ガラス転移点とする。
JIS K0070の方法により測定する。但し、測定溶媒のみJIS K0070の規定のエタノールとエーテルの混合溶媒から、アセトンとトルエンの混合溶媒(アセトン:トルエン=1:1(容量比))に変更した。
本明細書において、トナーの体積中位粒径(D50)とは、体積分率で計算した累積体積頻度が粒径の小さい方から計算して50%になるトナーの粒径を意味する。
測定機:コールターマルチサイザーII(ベックマンコールター社製)
アパチャー径:50μm
解析ソフト:コールターマルチサイザーアキュコンプ バージョン 1.19(ベックマンコールター社製)
電解液:アイソトンII(ベックマンコールター社製)
分散液:エマルゲン109P(花王社製、ポリオキシエチレンラウリルエーテル、HLB:13.6)5重量%電解液
分散条件:分散液5mLに測定試料10mgを添加し、超音波分散機にて1分間分散させ、その後、電解液25mLを添加し、さらに、超音波分散機にて1分間分散させる。
測定条件:前記電解液100mLに、3万個のトナー粒子の粒径を20秒間で測定できる濃度となるように、前記分散液を加え、3万個の粒子を測定し、その粒度分布から体積中位粒径(D50)を求める。
表1に示す原料を窒素導入管、脱水管、攪拌機及び熱電対を装備した5リットル容の4ツ口フラスコに入れ、230℃にて8時間反応させた後、230℃、8.3kPaにて所定の軟化点に達するまで減圧反応を行って、樹脂Aを得た。
表1に示すフマル酸を除く原料を窒素導入管、脱水管、攪拌機及び熱電対を装備した5リットル容の4ツ口フラスコに入れ、230℃にて6時間反応させた後、180℃まで冷却し、フマル酸を投入した。180℃から210℃まで10℃/時の速度で昇温し、4時間かけて反応させた後、210℃、8.3kPaにて所定の軟化点に達するまで減圧反応を行って、樹脂Bを得た。
表2に示す結着樹脂及び着色剤、荷電制御剤「ボントロン N-04」(オリエント化学工業社製)2重量部、離型剤(精製カルナウバワックス1号、加藤洋行社製)3重量部をヘンシェルミキサーを用いて予備混合した後、二軸押出機で溶融混練、冷却、粗粉砕した後、ジェットミルにより粉砕し分級して、体積中位粒径(D50)が10μmの粉体を得た。得られた粉体100重量部に、外添剤として、正帯電性疎水性シリカ「HDK3050VP」(クラリアント社製)0.4重量部及び負帯電性疎水性シリカ「TS720」(キャボット社製)0.1重量部を添加し、ヘンシェルミキサーで混合することにより、トナーを得た。
A:紙同士の接着がない。
B:わずかに紙同士の接着が見られるが、すぐに剥がすことができ、定着画像にも影響なし。
C:紙同士が接着している。剥がすことはできるが、剥がすと定着画像に影響あり。
D:紙同士が接着している。容易には剥がすことができず、剥がすと定着画像も剥がれる。
予熱プラテンを備えたプレヒート機構を有する熱圧力定着方式のプリンタ「Infoprint4100MS1」(印刷スピード:53.34m/min)に二成分現像剤を実装し、画像濃度が2.0になるようにコントラストを調整した後、HSP-G用紙(上質、18インチ×11インチの連続用紙)に、プリンタコントローラに実装されている印刷パターン“alternate”を印刷した。なお、いずれのプリンタも、プレヒートの表面温度は70℃に、ヒートロールの表面温度は190℃に、それぞれ調整した。
Claims (4)
- 記録媒体をプレヒート機構で予熱する熱圧力定着により、トナーを前記記録媒体に定着させる工程を含む画像形成方法であって、前記トナーの50℃での貯蔵弾性率が2.00×107〜5.00×107Paである、画像形成方法。
- 熱圧力定着を、表面温度が170℃以上になるように調整したヒートロールにより行う、請求項1記載の画像形成方法。
- 45m/min以上の印刷スピードで画像を形成する、請求項1又は2記載の画像形成方法。
- プレヒート機構において、プレヒートの表面温度を40℃以上になるように調整する、請求項1〜3いずれか記載の画像形成方法。
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DE112011101069T5 (de) | 2010-03-26 | 2013-01-03 | Semiconductor Energy Laboratory Co., Ltd. | Verfahren zur Herstellung einer Halbleitervorrichtung |
WO2013141029A1 (en) * | 2012-03-22 | 2013-09-26 | Ricoh Company, Ltd. | Toner, developer, and color toner set |
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