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Sheet feeder and image forming apparatus incorporating same

A paper feeder and paper feeding technology, applied in transportation and packaging, thin material handling, object separation, etc., can solve the problems of increasing the frequency of paper replenishment and raising the stacking board

Inactive Publication Date: 2011-07-20
RICOH KK
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, in this method, for example, it is necessary to keep the front edge portion of the stacking board elevated because the front edge portion of the sheet must be kept elevated to contact the feed roller
As a result, the number of papers stacked on the stacking board is reduced compared to the configuration in which the stacking board can be lowered, so that the replenishment frequency of papers increases

Method used

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  • Sheet feeder and image forming apparatus incorporating same
  • Sheet feeder and image forming apparatus incorporating same
  • Sheet feeder and image forming apparatus incorporating same

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Embodiment Construction

[0032] In describing the preferred embodiments shown in the drawings, specific terminology is used for the sake of clarity. However, it is not intended that the disclosure of this patent specification be limited to the specific terms selected, but that each specific element should be understood to include all technical equivalents that operate in a similar manner and obtain a similar effect.

[0033] It should be understood that in this specification, the term "recording medium" includes not only paper, but also threads, fibers, textiles, leather, metal, plastic, glass, wood, ceramics, etc. that can adhere or permeate ink.

[0034] Referring now to the drawings, wherein like reference numerals designate like or corresponding parts throughout the drawings, in particular corresponding figure 1 , an image forming apparatus according to an illustrative embodiment of the present invention is explained.

[0035] figure 1 Explaining that the image forming apparatus in this embodime...

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Abstract

A sheet feeder includes a stacker that accommodates multiple sheets of recording media, an elevation unit disposed in a downstream portion of the stacker in a sheet feeding direction and which ascends to lift a leading edge portion of the sheet in the sheet feeding direction, a rotary feeding member disposed facing the elevating unit and forming a nip in which the leading edge portion of the sheet is clamped together with the elevation unit when the elevation unit ascends, and a guide unit disposed adjacent to an outer circumference of the feeding member, facing an upper side of the leading edge portion of the sheet. The guide unit guides the leading edge portion of the sheet toward the nip between the feeding member and the elevation unit.

Description

[0001] Cross-references to related technologies [0002] This patent specification is based on and claims priority to Japanese Patent Application No. 2009-256219 filed in the Japan Patent Office on November 9, 2009, the entire contents of which are hereby incorporated by reference. technical field [0003] The present invention mainly relates to a sheet feeder and an image forming apparatus such as a copying machine, a printer, a facsimile machine, or a multifunctional machine having at least two such functions. Background technique [0004] In general, there are two types of image forming apparatuses, such as printers, facsimile machines, copiers, or multifunctional machines including at least two such functions: inkjet image forming apparatuses that are used on paper as a recording medium A recording head that ejects ink droplets or a liquid ejection head, and an electrophotographic image forming apparatus that develops an electrostatic latent image using a developer. [...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65H3/66B65H3/56B41J13/10
CPCB65H85/00B65H3/5223B65H3/0661B65H3/66B65H2405/1134B65H2404/1112B65H3/54B65H1/12B65H3/44B65H2801/12
Inventor 国冈聪志
Owner RICOH KK
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