JPS6430560U

JPS6430560U -

Info

Publication number: JPS6430560U
Application number: JP12669187U
Authority: JP
Priority date: 1987-08-19
Filing date: 1987-08-19
Publication date: 1989-02-23

Description

[Brief explanation of the drawing]

第１図は本考案のブランク露光装置の全体図、
第２図は原稿像端側、除電機構の配置図、第３図
は原稿像先端、後端除電の感光体長手方向光路展
開図、第４図は原稿像先端、後端除電の感光体同
期方向の光路図、第５図は原稿像側端除電の光路
展開図及び感光体面長手照度分布図、第６図は従
来の原稿像側端除電の光路展開図及び感光体面長
手照度分布図、第７図は原稿像先端、後端除電の
感光体同期方向の光路展開図及び感光体面同期方
向照度分布図、第８図は従来の原稿像先端、後端
除電の感光体同期方向の光路展開図及び感光体面
同期方向照度分布図。１……感光体、２，３，１２，１３……光源ラ
ンプ、４ａ，４ｂ，１４……ブランクシヤツター
、５，１５……反射板、６……スリツト、７……
電気基板。 Figure 1 is an overall view of the blank exposure apparatus of the present invention.
Figure 2 is a layout diagram of the charge removal mechanism at the edge of the original image, Figure 3 is a developed view of the longitudinal optical path of the photoconductor for charge removal at the front and rear edges of the original image, and Figure 4 is photoconductor synchronization for charge removal at the front and rear edges of the original image. FIG. 5 is a developed optical path diagram and a longitudinal illuminance distribution diagram on the photoconductor surface for static elimination at the edge of the original image, and FIG. Figure 7 is an optical path development diagram in the photoconductor synchronous direction for charge removal at the leading edge and trailing edge of the original image, and an illuminance distribution diagram in the photoconductor surface synchronous direction. Figure 8 is an optical path development diagram in the photoconductor synchronous direction for conventional document image leading edge and trailing edge static elimination. and a photoconductor surface synchronous direction illuminance distribution diagram. 1... Photoreceptor, 2, 3, 12, 13... Light source lamp, 4a, 4b, 14... Blank shutter, 5, 15... Reflector, 6... Slit, 7...
electrical board.

Claims

[Scope of Claim for Utility Model Registration] (1) Forming a latent image on an image carrier using a copying device using an electrophotographic process that copies the original by slit exposure of the original image on the image carrier through an imaging lens. In a blank exposure device for neutralizing the outer periphery of the original image to a white state, when the original image and the image carrier are synchronized and the static electricity is removed from the leading edge of the original image and the trailing edge of the original image in the perpendicular direction, the direction is the same as the longitudinal direction of the slit exposure bundle. When the longitudinal direction of the filament of the illumination lamp is made to match the direction of the illumination lamp, and when the edge of the original image in the synchronous direction is to be neutralized, it is Including the plate edge part,
An illumination device characterized in that the longitudinal direction of a filament of a light source lamp is aligned within a plane perpendicular to an image carrier synchronization direction. (2) When neutralizing the leading and trailing edges of the original in the direction of synchronization between the original image and the image carrier, move or rotate the light source lamp in the direction of the blank exposure light beam that matches the direction of synchronization with the original slit image on the image carrier. 2. The lighting device according to claim 1, wherein the lighting device is characterized in that: