JP2013044822A5

JP2013044822A5 -

Info

Publication number: JP2013044822A5
Application number: JP2011181017A
Authority: JP
Filing date: 2011-08-22
Publication date: 2014-11-06
Anticipated expiration: 2031-08-22

Description

請求項５に係る発明は
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む層を有し、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（１）を満たす電子写真感光体と、
平均形状係数ＳＦ１が１００以上１３０以下で体積平均粒径が４．０μｍ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、
前記トナー像の転写後、前記電子写真感光体の表面に光照射して該表面を除電させる除電装置と、
を備え、
画像形成装置に着脱し得るプロセスカートリッジ。
・式（１）：（Ｐ−Ｐ_０）／ｄ^２≦１．２０ The invention according to claim 5 has, as the outermost surface layer, a layer containing a polymer of at least one reactive compound selected from reactive compounds represented by the following general formulas (I) and (II), 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 charge removal, and the film thickness d of the outermost surface layer are 0 An electrophotographic photosensitive member satisfying the following (1) with respect to the surface potential P ₀ [V] after static elimination when
A developing device containing a developer containing toner having an average shape factor SF1 of 100 or more and 130 or less and a volume average particle size of 4.0 μm or less, and developing an electrostatic latent image with the developer to form a toner image;
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

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む層を有し、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、最表面層の膜厚ｄ[μｍ]と、除電後の表面電位Ｐ[Ｖ]と、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、上記（１）を満たす電子写真感光体と、平均形状係数ＳＦ１が１００以上１３０以下で体積平均粒径が４．０μｍ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、階調性の低下を抑制し、高解像度の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 which concerns on Claim 5, the layer containing the polymer of the at least 1 sort (s) of reactive compound selected from the reactive compound represented by the following general formula (I) and (II) as an outermost surface layer. 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 charge removal, and the film thickness d of the outermost surface layer An electrophotographic photoreceptor satisfying the above (1) with respect to the surface potential P ₀ [V] after static elimination when ₀ is assumed, an average shape factor SF1 of 100 to 130 and a volume average particle size of 4. Compared with a case where a developer containing a toner of 0 μm or less is accommodated and a latent image is developed with the developer to form a toner image, the gradation is lowered over a long period of time. It is possible to provide a process cartridge that can suppress and obtain a high-resolution image.

Claims

As the outermost surface layer, it has a layer containing a polymer of at least one reactive compound selected from the reactive compounds represented by the following general formulas (I) and (II), and after charging the surface, When neutralization is performed by light irradiation, the film thickness d [μm] of the outermost surface layer, the surface potential P [V] after charge removal, and the film thickness d after the charge removal when the film thickness d of the outermost surface layer is zero. An electrophotographic photosensitive member whose relationship with the surface potential P ₀ [V] satisfies the following formula (1):
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 containing a developer containing toner having an average shape factor SF1 of 100 to 130 and a volume average particle size of 4.0 μm or less, and developing 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 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)

As the outermost surface layer, it has a layer containing a polymer of at least one reactive compound selected from the reactive compounds represented by the following general formulas (I) and (II), and after charging the surface, When neutralization is performed by light irradiation, the film thickness d [μm] of the outermost surface layer, the surface potential P [V] after charge removal, and the film thickness d after the charge removal when the film thickness d of the outermost surface layer is zero. An electrophotographic photosensitive member whose relationship with the surface potential P ₀ [V] satisfies the following (1):
A developing device containing a developer containing toner having an average shape factor SF1 of 100 or more and 130 or less and a volume average particle size of 4.0 μm or less, and developing an electrostatic latent image with the developer to form a toner image;
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.)