Resources Contact Us Home
Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Variable magnification copying apparatus and automatic shutdown therefor










Image Number 12 for United States Patent #5008712.

This invention relates to a copying apparatus with variable magnification capability, wherein the reduced and enlarged copying operations are achieved by varying the speed of a photosensitive drum, while controlling an optical system. The size of a copying material is compared with the size of a reproduced image at a selected magnification, and the comparison is displayed. Also, the size of copy material and the selected magnification can be changed during an interrupt process, and the scanning stroke and timing for image formation are controlled differently for different magnifications. The size of a copying material is compared with the size of a reproduced image at a selected magnification, and the comparison is displayed. Also, the size of copy material and the selected magnification can be changed during an interrupt process, and the scanning stroke and timing for image formation are controlled differently for different magnifications. the optical system is moved to a determined position for a selected magnification and an error signal is generated when the optical system does not arrive at the determined position within a predetermined time after the selected magnification is input by the operator. The image forming cycle is stopped or inhibited in response to generation of the error signal.








 
 
  Recently Added Patents
Technique for manufacturing bit patterned media
Imaging apparatus, control method thereof, and program
Organic light emitting diode light source device
Method and device for managing subscriber connection
High-density fiber optic modules and module housings and related equipment
Multiplexing channels by a medium access controller
High conductive water-based silver ink
  Randomly Featured Patents
System and method of synchronizing data between a server and a client
Regressive drive sense amplifier
Microscope
Container for cassette or the like
Spinstand for testing magnetic heads and disks
Game system and game terminal
Fuel injector
Event-based temporal logic
Charger
Torsional dampers