JP2013044821A5

JP2013044821A5 -

Info

Publication number: JP2013044821A5
Application number: JP2011181016A
Authority: JP
Filing date: 2011-08-22
Publication date: 2014-11-06
Anticipated expiration: 2031-08-22

Description

請求項５に係る発明によれば、最表面層として、下記一般式（I）及び（II）で表される反応性化合物から選択される少なくとも１種の反応性化合物の重合体を含んで構成され、膜厚が５μｍ以上２０μｍ以下の層を有し、且つ、表面を帯電後、光照射により除電させた場合において、前記最表面層の膜厚ｄ[μｍ]と、除電後の表面電位Ｐ[Ｖ]と、前記最表面層の膜厚ｄを０としたときの除電後の表面電位Ｐ_０[Ｖ]と、の関係が下記式（１）を満たす電子写真感光体と、平均形状係数ＳＦ１が１４０以上１７０以下のトナーを含む現像剤を収容し、静電潜像を前記現像剤で現像してトナー像を形成する現像装置と、を組み合わせない場合に比べ、長期に亘り、黒点状の画像欠陥を抑制した画像が得られるプロセスカートリッジを提供できる。 According to the invention according to claim 5, the outermost surface layer includes a polymer of at least one reactive compound selected from reactive compounds represented by the following general formulas (I) and (II). In the case where the film thickness is 5 μm or more and 20 μm or less and the surface is charged and then neutralized by light irradiation, the film thickness d [μm] of the outermost surface layer and the surface potential P after the neutralization An electrophotographic photosensitive member in which the relationship between [V] and the surface potential P ₀ [V] after static elimination when the film thickness d of the outermost surface layer is 0 is satisfied, and the average shape factor Compared to a case where a developer containing a toner having an SF1 of 140 or more and 170 or less and containing a developer and developing the electrostatic latent image with the developer to form a toner image, a black dot shape is used for a long time. It is possible to provide a process cartridge capable of obtaining an image with suppressed image defects.

Claims

The outermost surface layer includes a polymer of at least one reactive compound selected from the reactive compounds represented by the following general formulas (I) and (II), and has a film thickness of 5 μm to 20 μm. And when the surface is charged and then neutralized by light irradiation, the film thickness d [μm] of the outermost surface layer, the surface potential P [V] after the neutralization, and the outermost surface layer An electrophotographic photosensitive member satisfying the following formula (1) with respect to the surface potential P ₀ [V] after static elimination when the film thickness d is 0;
A charging device for charging the surface of the electrophotographic photosensitive member;
An exposure device that exposes the surface of the charged electrophotographic photosensitive member to form an electrostatic latent image on the surface;
A developing device that contains a developer containing toner having an average shape factor SF1 of 140 or more and 170 or less and that develops the electrostatic latent image with the developer to form a toner image;
A transfer device for transferring the toner image to a transfer medium;
A cleaning device having a cleaning blade that contacts and cleans the surface of the electrophotographic photosensitive member after the toner image is transferred;
A static eliminator for irradiating the surface of the electrophotographic photosensitive member with light after transferring the toner image;
An image forming apparatus comprising:
Formula (1): (P−P ₀ ) / d ² ≦ 1.20

(In general formula (I), F represents a charge transporting skeleton. L represents a group consisting of an alkylene group, —C (═O) —, —N (R) —, —S—, and —O—). And R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and m represents an integer of 1 to 6.

(In general formula (II), F represents a charge transporting skeleton. L ′ comprises an alkylene group, —C (═O) —, —N (R) —, —S—, and —O—). An (n + 1) -valent linking group formed by combining two or more selected from the group, R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and m ′ represents an integer of 1 to 6. N represents an integer of 2 or more and 3 or less.)

Reaction in which the reactive compound represented by the general formula (I) is represented by the following general formula (III), and D in the following general formula (III) represents a group represented by the following general formula (IV) Compound,
Reaction in which the reactive compound represented by the general formula (II) is represented by the following general formula (III), and D in the following general formula (III) represents a group represented by the following general formula (V) The image forming apparatus according to claim 1, wherein the image forming apparatus is a functional compound.

(In the general formula (III), Ar ^{1 to} Ar ⁴ each independently represents a substituted or unsubstituted aryl group. Ar ⁵ represents a substituted or unsubstituted aryl group, or a substituted or unsubstituted arylene group. C1 to c5 each independently represents an integer of 0 or more and 2 or less, provided that all c1 to c5 do not represent 0 at the same time, and k represents an integer of 0 or 1.

(In General Formula (IV), L is a combination of two or more selected from the group consisting of an alkylene group, —C (═O) —, —N (R) —, —S—, and —O—). (Wherein R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group.)

(In General Formula (V), L ′ is a combination of two or more selected from the group consisting of an alkylene group, —C (═O) —, —N (R) —, —S—, and —O—). R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and n represents an integer of 2 or more and 3 or less.

The image forming apparatus according to claim 2, wherein the group represented by the general formula (IV) represents a group represented by the following general formula (VI) or the following general formula (VII).

(In the general formulas (VI) and (VII), X and X ′ represent a divalent organic group. P and p ′ represent an integer of 0 or 1.)

The image forming apparatus according to claim 2, wherein the group represented by the general formula (V) is a group represented by the following general formula (VIII) or the following general formula (IX).

(In general formulas (VIII) and (IX), Y and Y ′ represent a divalent organic group. Q and q ′ represent 0 or an integer of 1)

The outermost surface layer includes a polymer of at least one reactive compound selected from the reactive compounds represented by the following general formulas (I) and (II), and has a film thickness of 5 μm to 20 μm. And when the surface is charged and then neutralized by light irradiation, the film thickness d [μm] of the outermost surface layer, the surface potential P [V] after the neutralization, and the outermost surface layer An electrophotographic photosensitive member satisfying the following formula (1) with respect to the surface potential P ₀ [V] after static elimination when the film thickness d is 0;
A developing device that contains a developer containing toner having an average shape factor SF1 of 140 or more and 170 or less and that develops an electrostatic latent image with the developer to form a toner image;
A cleaning device having a cleaning blade that contacts and cleans the surface of the electrophotographic photosensitive member after the toner image is transferred;
A static eliminator for irradiating the surface of the electrophotographic photosensitive member with light after transferring the toner image;
With
A process cartridge that can be attached to and detached from an image forming apparatus.
Formula (1): (P−P ₀ ) / d ² ≦ 1.20

(In general formula (I), F represents a charge transporting skeleton. L represents a group consisting of an alkylene group, —C (═O) —, —N (R) —, —S—, and —O—). And R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and m represents an integer of 1 to 6.

(In general formula (II), F represents a charge transporting skeleton. L ′ comprises an alkylene group, —C (═O) —, —N (R) —, —S—, and —O—). An (n + 1) -valent linking group formed by combining two or more selected from the group, R represents a hydrogen atom, an alkyl group, an aryl group, or an aralkyl group, and m ′ represents an integer of 1 to 6. N represents an integer of 2 or more and 3 or less.)