公开(公告)号：US3885871A

公开(公告)日：1975-05-27

申请号：US46032174

申请日：1974-04-12

Applicant: IBM

Inventor： GALATHA MATTHEW J ,  TYNAN RICHARD F

IPC: G03B27/50 ,  G03B27/52 ,  G03C5/04 ,  G03B27/32

CPC classification number: G03B27/50 ,  G03B27/528 ,  G03C5/04

Abstract: A document photography system in which the front and rear sides of serially fed continuously moving documents are imaged on an image receptor surface, such as photographic film, which is periodically advanced. An improved optical system utilizing first and second sets of fixed mirrors and fixed common reflecting surfaces provide front and rear images of the document in which the long dimensions of the document images are perpendicular to the direction of the film motion, and the front and rear images of a given document are located end-to-end transversely of the film surface. The width of incoming documents is sensed and the film motion is incremented by amounts proportional to the indicated width of the documents.

Abstract translation: 一种文件摄影系统，其中串行供给的连续移动的文件的前侧和后侧成像在周期性地前进的图像接收器表面上，例如摄影胶片。 利用第一组和第二组固定镜和固定公共反射表面的改进的光学系统提供文件的前后图像，其中文档图像的长尺寸垂直于胶片运动的方向，并且前后图像 给定文档的横向于胶片表面的端对端。 检测进入文件的宽度，并且胶卷运动增加与文档的指定宽度成比例的数量。

公开(公告)号：US3882358A

公开(公告)日：1975-05-06

申请号：US37384873

申请日：1973-06-26

Applicant: IBM

Inventor： DESKEVICH STEPHEN ,  PEACOCK JAMES C ,  TYNAN RICHARD F ,  WILSON ALAN D

IPC: H05B41/30 ,  H05B37/00

CPC classification number: H05B41/30

Abstract: Charging circuit for a flash lamp in which flash holdover is prevented by establishing a high impedance charging circuit for a predetermined time after flash initiation to allow deionization of the lamp plasma and, after a predetermined time, establishing a low impedance charging circuit to provide a fast charging rate for the energy storage device. Impedance levels are changed in the circuit by gating a silicon controlled rectifier (SCR) with a control signal a predetermined time after flash initiation so as to bypass a high impedance circuit path in parallel therewith. As the energy storage device becomes fully charged, the SCR returns to its blocking condition, the control signal terminates and the lamp can be fired again.

Abstract translation: 用于闪光灯的充电电路，其中通过在闪光开始之后建立高阻抗充电电路达预定时间来防止闪光灯保持，以允许灯等离子体去离子，并且在预定时间之后建立低阻抗充电电路以提供快速 储能装置的充电率。 通过在闪光开始之后的预定时间内通过控制信号选通可控硅整流器（SCR），以便与其并联的高阻抗电路路径旁路，在电路中改变阻抗水平。 当能量存储装置充满电时，SCR返回到其阻塞状态，控制信号终止并且灯可以再次点火。