Electrophotography – Control of electrophotography process – Control of transfer
Patent
1996-05-23
1998-04-14
Smith, Matthew S.
Electrophotography
Control of electrophotography process
Control of transfer
399301, 399302, G03G 1516
Patent
active
057404925
ABSTRACT:
A color image forming apparatus is provided with an intermediate transfer belt to transfer thereupon an image of each of a plurality of colors carried on a photoconductive member, sequentially superposing one image on top of another, to form a full color image, and to further transfer the full color image to a copysheet. The intermediate transfer belt is passed over supporting rollers and a plurality of marks are printed on the intermediate transfer belt for indicating a position on the belt. A detector is provided for detecting the marks on the belt to generate a detect signal to start an image forming operation for each of the colors. The detector is controlled to start detection of a mark when a predetermined length of time is elapsed after a start or a termination of an operation of a driving element of the apparatus. The detector is provided at a position facing one of the support rollers around which the intermediate transfer belt is passed. A distance between the adjoining marks is equal to an integral multiple of at least one of a circumference of the roller the detector faces. The provision of an improved color image forming apparatus realizes a capability of accomplishing an accurate image registration for each of the plurality of colors.
REFERENCES:
patent: 5255063 (1993-10-01), Ideyama et al.
patent: 5270769 (1993-12-01), Satoh et al.
patent: 5300982 (1994-04-01), Inamoto et al.
patent: 5452073 (1995-09-01), Kataoka
patent: 5499092 (1996-03-01), Sasaki
patent: 5515145 (1996-05-01), Sasaki et al.
Deki Tsuyoshi
Irie Koichi
Tamiya Takahiro
Ricoh & Company, Ltd.
Smith Matthew S.
LandOfFree
Color image forming apparatus does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Color image forming apparatus, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Color image forming apparatus will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-648735