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
Shape based similarity of continuous wave doppler images
Control of protein activity using a conducting polymer
Illumination apparatus
Image-monitoring method for electroporation treatment and as associated image-monitoring appliance
Reduced sorbent utilization for circulating dry scrubbers
Anti-FGFR3 antibodies and methods using same
Method of preparing MgB.sub.2 superconducting wire and the MgB.sub.2 superconducting wire prepared thereby
  Randomly Featured Patents
Camera control apparatus and method
Border stabilizing and reinforcing member for use in mattresses, cushions and the like
Disc brake caliper assembly
Energy minimization for classification, pattern recognition, sensor fusion, data compression, network reconstruction and signal processing
System and method for publishing liquidity replenishment prices in a hybrid auction market
Photoacoustic spectroscopy sample array vessels and photoacoustic spectroscopy methods for using the same
Rapid dialing method for telecommunications
Repetition pipette
Hydrophobically modified polyamine scale inhibitors
Nitrosation of homocysteine as a method for treating homocysteinemia