JPS5925547U

JPS5925547U - Exposure adjustment device

Info

Publication number: JPS5925547U
Application number: JP11833982U
Authority: JP
Inventors: 三林　武
Original assignee: 株式会社東芝
Priority date: 1982-08-05
Filing date: 1982-08-05
Publication date: 1984-02-17

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Brief explanation of the drawing]

第１図は従来装置の回路図、第２図はその電圧制御手段
の回路図、第３図は従来の他の電圧制御手段の回路図、
第４図は本考案装置に使用される電圧制御手段の回路図
、第５図ａ、　　ｂ、　　ｃは本考゛案装置に用いられ
る半導体スイッチの一例を示すブロック図、第６図は本
考案装置の面の実施例に用いられる電圧制御手段の回路
図である。２・・・・・・露光用光源、１１・・・・・・自動露光
電圧設定部、１２・・・・・・手動露光電圧設定部、１
３・・・・・・原稿、１４・・・・・・電圧制御手段、
５０〜５３．５５〜５９・・・・・・半導体スイッチ。第３図３１３３第４図（０）４７（ｂ）− 幡ｔ］−（ｃ）第６図FIG. 1 is a circuit diagram of a conventional device, FIG. 2 is a circuit diagram of its voltage control means, and FIG. 3 is a circuit diagram of another conventional voltage control means.
FIG. 4 is a circuit diagram of the voltage control means used in the device of the present invention, FIGS. 5 a, b, and c are block diagrams showing an example of a semiconductor switch used in the device of the present invention, and FIG. FIG. 3 is a circuit diagram of the voltage control means used in the embodiment of the device aspect; 2...Light source for exposure, 11...Automatic exposure voltage setting section, 12...Manual exposure voltage setting section, 1
3... Original document, 14... Voltage control means,
50-53.55-59...Semiconductor switch. Fig. 3 3133 Fig. 4 (0) 47 (b) - Hat] - (c) Fig. 6

Claims

[Scope of utility model registration request]

(1) It has an exposure light source for exposing the original image and a voltage control means for controlling the voltage applied to the exposure light source, and the amount of exposure can be controlled by switching the voltage of the voltage control means. An exposure amount adjusting device, characterized in that a semiconductor switch is used for switching control of the voltage.

(2) The voltage control means has an automatic exposure voltage setting section and a manual exposure voltage setting section for setting the exposure voltage according to the density of the original, and a semiconductor switch for switching between the two setting sections. An exposure amount adjusting device according to claim 1 of the utility model registration claim.

(3) Practical application characterized in that the voltage control means has a plurality of exposure voltage setting circuits according to changes in magnification between the original image and the exposure image, and a semiconductor switch for switching the output of each circuit. An exposure amount adjusting device according to claim 1 or 2 of the patent registration claim.