A printer has a lower module and upper module. The lower module has a paper feed unit and a printing unit. A back of the upper module is hinged to lower module. A paper handling part holds paper after printing by the printing unit. A discharge unit in the upper module moves the paper out of the upper module while maintaining a hold on a rear portion of the paper and to draw the paper back into the upper module after an elapse of time. A container includes a support member that rotates into contact with and moves away from a lower part of the upper module. The container configured to receive and store the paper that has been drawn back by the discharge unit. The paper is stored in a region between the support member and the lower part of the upper module.

A printer has a lower module and upper module. The lower module has a paper feed unit and a printing unit. A back of the upper module is hinged to lower module. A paper handling part holds paper after printing by the printing unit. A discharge unit in the upper module moves the paper out of the upper module while maintaining a hold on a rear portion of the paper and to draw the paper back into the upper module after an elapse of time. A container includes a support member that rotates into contact with and moves away from a lower part of the upper module. The container configured to receive and store the paper that has been drawn back by the discharge unit. The paper is stored in a region between the support member and the lower part of the upper module.

An electrophotographic photosensitive member includes a support, an undercoat layer which contains a metal oxide particle and is formed on the support, a charge generating layer formed on the undercoat layer, and a charge transporting layer formed on the charge generating layer. Either or both of the undercoat layer and the charge generating layer contain a compound represented by formula (1).

A quinone derivative represented by general formula (1) where, in the general formula (1), chemical groups R.sub.1 each represent, independently of one another, an alkyl group, a cycloalkyl group, an alkoxy group, an aralkyl group, or an aryl group, and R.sub.2 represents an alkyl group, an aralkyl group, a cycloalkyl group, an alkoxy group, an aryl group, or a heterocyclic group. ##STR00001##

A quinone derivative represented by general formula (1), ##STR00001##
where, in the general formula (1), R.sub.1 and R.sub.2 each represent, independently of one another, an alkyl group, a cycloalkyl group, an alkoxy group, an aralkyl group, or an aryl group, R.sub.3 represents a halogen atom, an alkyl group, an alkoxy group, or an aryl group, m represents an integer of no less than 0 and no greater than 4, and when m represents an integer of no less than 2, chemical groups R.sub.3 may be the same as or different from one another.

Provided is a photoconductor including a conductive support, an intermediate layer containing metal oxide particles, and a photoconductive layer. The intermediate layer and the photoconductive layer are provided over the conductive support in the order of reciting. An elastic power (We/Wt value) of the intermediate layer is greater than or equal to 20.0% but less than 35.0%. A Martens hardness (HM) of the intermediate layer is greater than or equal to 350 [N/mm.sup.2] but less than 450 [N/mm.sup.2].

A photoconductor includes an electroconductive substrate; an intermediate layer overlying the electroconductive substrate; and a photosensitive layer overlying the intermediate layer. The intermediate layer includes a metal oxide particle and a binder resin, and satisfies the following relations (1) and (2):
Smr=Scut/Sk  (1)
0.4≦Smr≦0.6  (2)
where Smr represents an areal ratio of concave parts; Sk represents a reference area; and a Scut represents a cross-sectional area obtained by cutting a three-dimensional curved surface obtained from the reference area with an average height surface, the average height surface being a surface constituted of averaged height of all measured height data.

A compound has a structure represented by the following formula (C1): ##STR00001##
wherein R.sub.a1, R.sub.a2, R.sub.a3, R.sub.a41, R.sub.a42, R.sub.a43, R.sub.a44, R.sub.a45, R.sub.a5, R.sub.a6, R.sub.a7, R.sub.a8, R.sub.a9, R.sub.a10, and R.sub.a11 each independently represent a hydrogen atom, an alkyl group, an alkenyl group, an alkynyl group, an alkoxy group, an aralkyl group, an aryl group, a cyano group, a halogen atom, or a group obtained by combining two or more of the above groups, and a combination of R.sub.a1 and R.sub.a2, R.sub.a41 and R.sub.a42, R.sub.a42 and R.sub.a43, R.sub.a43 and R.sub.a44, R.sub.a44 and R.sub.a45, R.sub.a5 and R.sub.a6, R.sub.a8 and R.sub.a9, or R.sub.a10 and R.sub.a11 each independently may form a ring.

The electrophotographic photosensitive member has: a cylindrical support; a charge generating layer formed on the cylindrical support; and a charge transport layer formed on the charge generating layer, the charge generating layer contains a hydroxygallium phthalocyanine crystal having a particular CuKα characteristic X-ray diffraction peak, a titanyl phthalocyanine crystal having a particular CuKα characteristic X-ray diffraction peak or a chlorogallium phthalocyanine crystal having a particular spectral absorption spectrum as a charge generating material, and in the charge generating layer, with respect to the film thickness of the charge generating layer, when a region from the central position of an image forming area to the end position of the image forming area is divided in the axial direction of the cylindrical support into five equal regions and the average film thickness of the charge generating layer in each region satisfies a specific condition.

The present invention provides an electrophotographic photosensitive member including a support, and a photosensitive layer on the support. The photosensitive layer has a charge generating layer containing a charge generating material and a charge transporting layer containing a charge transporting material, in this order. The charge transporting layer contains (α) a specific polycarbonate resin or a specific polyester resin, (β) the charge transporting material, (γ) a methoxybenzene, and (δ) a methoxybenzene, a methoxycyclohexane or a methylhexanol having a substituent. The content Wδ of the (δ) is 0.001% by mass or more and 1% by mass or less based on the total mass of the charge transporting layer.