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
Method and system for imaging a cross section of a specimen
Method and computed tomography device and data storage medium for performing a dynamic CT examination on a patient
Hepodxilin analog enantiomers
Focusing apparatus that effectively sets a focus area of an image when a focusing mode is changed
Transmission apparatus and network protection method
Methods for enhancing tantalum filament life in hot wire chemical vapor deposition processes
Contactless electrical connector for an induction sensor, and sensor including such a connector
  Randomly Featured Patents
Combined pencil sharpener and measuring tape
Method and apparatus for handling a charging state in a mobile electronic device
Neural network that incorporates direct optical imaging
Genetic engineering of streptavidin-binding peptide tagged single-chain variable fragment antibody to Venezuelan equine encephalitis virus
Light source having spatially interleaved light beams
Method and apparatus for controllably supplying material to a rod mill in accordance with power consumption of the rod mill motor
Adaptive messaging
Method of improving pour point of lubricating compositions containing polyalkylene glycol mono ethers
Collapsible bowl
Multilayer plain bearing