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Class Information
Number: 399/196
Name: Electrophotography > Image formation > Exposure > Variable magnification
Description: Subject matter wherein a means or method is provided for selectively producing a copy in more than one magnification ratio.

Sub-classes under this class:

Class Number Class Name Patents
399/199 Additional lens 17
399/198 Exposure adjustment 26
399/197 Having calculation 43
399/200 Having scanning modification 79

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8662768 Image forming device Mar. 4, 2014
8179559 Image forming apparatus with a substitute recording medium for an unavailable recording medium and method thereof May. 15, 2012
8010000 Image forming apparatus for use in controlling image magnification Aug. 30, 2011
7970301 Methods, apparatus and systems to compensate for distortions caused by fusing Jun. 28, 2011
7859714 Light emitting device including position determining member having a height that determines a distance between a focusing lens array and an image carrier Dec. 28, 2010
7573606 Data processing apparatus, printing apparatus, print control method, storing medium storing computer-readable program therein, and program Aug. 11, 2009
7536125 Image forming apparatus capable of suppressing developer waste May. 19, 2009
7421230 Image forming apparatus and method that performs image-process magnification alteration to image data Sep. 2, 2008
7095975 Copying machine and copying method Aug. 22, 2006
6965458 Image formation apparatus Nov. 15, 2005
6873812 Image forming apparatus for forming image on different size pages of booklet and image forming method thereof Mar. 29, 2005
6628424 Digital synthesizer digital copier and magnification control unit Sep. 30, 2003
RE37812 Magnification setting apparatus for image forming apparatus Aug. 6, 2002
6236418 Image forming apparatus and method to correct magnification error caused by optical characteristics of image writing device May. 22, 2001
6041205 Image processing apparatus for laying out plurality of images in conformity with image orientation Mar. 21, 2000
5946532 Variable magnification optical system with light shielding mechanism Aug. 31, 1999
5940663 Image exposure apparatus Aug. 17, 1999
5926330 Optical variable power module Jul. 20, 1999
5842083 Electrostatic copying machine Nov. 24, 1998
5809381 Image-forming apparatus and magnification correction method using the same Sep. 15, 1998
5794104 Method and apparatus for image processing capable of generating multiple images of varying dimensions Aug. 11, 1998
5790921 Magnification setting apparatus for image forming apparatus Aug. 4, 1998
5764370 Enlargement and reduction apparatus for an image forming apparatus Jun. 9, 1998
5754304 Image forming system May. 19, 1998
5740505 Image forming apparatus Apr. 14, 1998
5671469 Image recording apparatus Sep. 23, 1997
5486900 Measuring device for amount of charge of toner and image forming apparatus having the measuring device Jan. 23, 1996
5475475 Image forming apparatus and method in which image of a plurality of originals are formed at different positions of one recording sheet Dec. 12, 1995
5398101 Image forming apparatus capable of copying images on various copy items Mar. 14, 1995
5396235 Numeral setting apparatus Mar. 7, 1995
5355198 Exposure device having light shading members for correcting light distribution of a projection mechanism in a copier Oct. 11, 1994
5313250 Movement controlling device May. 17, 1994
5311248 Copying area display device for a copier May. 10, 1994
5237366 Scanning exposure-reproduction apparatus and scaling reproduction method therefor Aug. 17, 1993
5181073 Copying apparatus Jan. 19, 1993
5168369 Image reader having electrical and optical means for varying magnification Dec. 1, 1992
5153638 Image projection apparatus and the method of driving the zoom lens Oct. 6, 1992
5150224 Image forming apparatus with selectable automatic document size or copy paper size priority modes Sep. 22, 1992
5138369 Magnification adjusting mechanism Aug. 11, 1992
5126791 Image forming apparatus with improved patch image formation Jun. 30, 1992
5109253 Copier technique for determining speed and threshold number of sheets for a copier Apr. 28, 1992
5105225 Image forming apparatus with increased throughput from simultaneous scanning and original feed Apr. 14, 1992
5099336 Copying machine capable of copying plural reproduced images from single original on a same copying paper and copying process thereof Mar. 24, 1992
5066974 Auxiliary exposure device for image recording apparatus Nov. 19, 1991
5043766 Exposure control apparatus for variable magnification copying machine Aug. 27, 1991
5019916 Digital copier with a facsimile function May. 28, 1991
5016051 Electrophotographic copying machine with device for shifting an image May. 14, 1991
5003383 Color image copier operable in analog and digital modes Mar. 26, 1991
4974022 Image forming apparatus Nov. 27, 1990
4959684 Copying machine Sep. 25, 1990

1 2 3

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