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US 8,577,237 B2Granted
Image forming apparatus
AssigneeRicoh Company, Ltd.
InventorShinji Aoki
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AssigneeRicoh Company, Ltd.
InventorShinji Aoki
Estimating the term…
In an image forming apparatus, a transfer current output unit outputs a transfer current having a same value as a target value to a nip forming member to transfer a toner image on a latent image carrier to the nip forming member to determine the target value based on an algorithm representing a relationship between an image area ratio of the toner image and the target value and the image area ratio, and in an algorithm for a second transfer step in which the toner image is transferred to be superimposed on the toner image of the nip forming member to which the toner image has been transferred, a smaller target value is related to a same image area ratio compared to the algorithm for a first transfer step in which the toner image is transferred to the nip forming member to which no toner image is transferred.
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.
Of a toner pattern, e.g. a powder pattern , e.g. magnetic transfer: using at least one intermediate support
Details of unit: for transferring a pattern to a second base
Electrography
About 5 years 2 months of term left · ends 25 Dec 2031 (estimated)
The present application claims priority to and incorporates by reference the entire contents of Japanese Patent Application No. 2010-030239 filed in Japan on Feb. 15, 2010.
1. Field of the Invention
The invention relates to an image forming apparatus, such as a copy machine, a facsimile machine, or a printer.
FIG. 1 is a schematic configuration diagram showing a printer according to an embodiment;
FIG. 2 is a schematic view illustrating a ten-line section on a photosensitive element;
FIG. 3 is a schematic view showing an example of a recording sheet and an image formed thereon;
Hereinafter, an embodiment will be described where it is applied to a color printer (hereinafter, simply referred to as a printer) serving as an image forming apparatus which forms a color image by a tandem-type image forming section.
First, the basic configuration of a printer according to the embodiment will be described. FIG. 1 is a schematic configuration diagram showing the printer according to the embodiment. The printer includes four process units 1Y, 1M, 1C, and 1Bk for yellow, magenta, cyan, and black (hereinafter, referred to as Y, M, C, and Bk) as a toner image forming unit. The process units 1Y, 1M, 1C, and 1Bk have the same configuration, except for using Y, M, C, and Bk toner of different colors as an image forming material for forming an image.
Description will be provided focusing on the process unit 1Y for generating a Y toner image. The processing unit 1Y is configured such that a photosensitive element 2Y, a developing unit 3Y, a charging unit, a photosensitive element cleaning unit 5Y, and the like are held in the common holding member as a single unit, and is attached and detached as a single body with respect to a printer main body.