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US 8,559,840 B2Granted
Image removal from a belt of an image forming apparatus
AssigneeBrother Kogyo Kabushiki Kaisha
InventorToshio Furukawa
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AssigneeBrother Kogyo Kabushiki Kaisha
InventorToshio Furukawa
Estimating the term…
An image forming apparatus includes: an image carrier rotates in a predetermined direction; a correction image forming unit forming correction images on the image carrier in the predetermined direction; and a cleaning roller configured to clean the correction images on the image carrier. With respect to all values ranging from 1 to an arbitrary value n, a positive integer N which satisfies following expression for each of n exists: (T×N+L)/n≦R/V≦(T×(N+1)−L)/n, where R represents a circumferential length of the cleaning roller, L represents a length of each of the correction images in a moving direction of the image carrier, T represents a formation interval of the correction images in the moving direction of the image carrier, and V represents a ratio of a peripheral speed of the cleaning roller to a moving speed of the image carrier.
An image forming apparatus comprising:
Dependencies are inferred from the claim text.
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From the US filing history. Foreign family members aren’t listed.
No references of this kind are recorded.
For removing solid developer or debris from the electrographic recording medium: using a roller or a polygonal rotating cleaning member; Details…
By measuring the photoconductor or its environmental characteristics: the characteristic being its speed
Electrography
About 5 years 3 months of term left · ends 1 Feb 2032 (estimated)
This application is based upon and claims the benefit of priority of Japanese Patent Application No. 2010-216672 filed on Sep. 28, 2010, the contents of which are incorporated herein by reference in its entirety.
The present disclosure relates to an image forming apparatus.
In an electrophotographic color image forming apparatus, a color image is formed by superimposing and transferring images of respective colors on a recording medium placed on a conveying belt or an intermediate transfer belt.
FIG. 1 is a side sectional view of a color laser printer.
FIG. 2 is a view showing a first pattern (a) and a second pattern (b).
FIG. 3 is a view showing a patch length L and a patch formation period T in the first pattern.
FIG. 1 is a side sectional view of a color laser printer which is one example of the image forming apparatus according to the exemplary embodiment. Hereinafter, an embodiment will be described with using the directions (upper, lower, front, and rear) which are defined in the figure.
The color laser printer 1 is a tandem type color laser printer. Four process portions 3 are placed in parallel in a body casing 2. The process portions 3 are disposed correspondingly with colors of black, yellow, magenta, and cyan, and arranged in the sequence of black, yellow, magenta, and cyan in the conveying direction (anteroposterior direction) of a sheet P by a conveying belt 10 which will be described later. An exposing device 4 which emits four laser beams respectively corresponding to the colors is placed above the process portions 3.
In FIG. 1, with the respective process portions 3 of the colors, characters of K (black), Y (yellow), M (magenta), and C (cyan) which indicate the respective colors are affixed to the ends of their reference numerals, respectively.