Sheet feeding device and recording device
A feeding device and sheet material technology, applied in printing devices, object supply, transportation and packaging, etc., can solve problems such as poor image quality, complicated driving mechanism, and unstable quality
Inactive Publication Date: 2007-09-26
CANON KK
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Problems solved by technology
However, on the other hand, production costs are increased
In addition, in the case where a common driving source is used for the feed roller and the conveying roller, a complicated structure is required, which causes problems in that an unstable factor in quality is generated, and since the driving and conveying of the feed roller The time required for switching between the drives of the rollers, the time required for recording has been extended
[0019] In addition, in addition to registration, for example, when using raised paper such as printing paper or inkjet paper, deterioration of image quality occurs due to the load on the transfer roller
For this reason, in the case of conveying special paper, a mechanism for reducing the load on the conveying roller is required, so providing such a mechanism complicates the driving mechanism
Method used
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[0052] Hereinafter, specific embodiments of the recording apparatus according to the present invention will be described with reference to the accompanying drawings.
[0053] The recording apparatus used in this embodiment is a serial-type inkjet printer according to the inkjet recording scheme, specifically, wherein the recording head is equipped with a means for generating thermal energy as ejection The energy of liquid ink adopts a scheme that uses thermal energy to produce ink state changes.
[0054] By using this recording scheme, characters and images to be recorded have high density and high definition. Specifically, in this embodiment, the ink is ejected by the pressure generated by the air bubbles generated when the ink is heated by a heating resistor as a thermal energy generator to generate film boiling. However, the method of ejecting ink is not limited to the method of using a heating resistor, but it is also possible, for example, to use an electrothermal transd...
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A sheet feeding apparatus for separating and feeding a plurality of sheets stacked on a sheet stacking portion one by one includes feeding means for feeding the plurality of sheets stacked on the sheet stacking portion, separation means for separating the sheets one by one by contacting to the sheets, returning means for returning the sheets to the sheet stacking portion, and separation force switching means for switching between generation and release of a separation force of the separation means. During a feeding operation, the feeding operation is switchable between a separating mode in which the separation force for a sheet is generated by the separation means and a conveying mode in which the separation force is released.
Description
technical field [0001] The present invention relates to a sheet feeding device that picks up a plurality of sheets stacked on a sheet stacking portion out of the sheet stacking portion and conveys the sheets one by one, and also relates to a A recording device for recording an image on a sheet. [0002] More particularly, the present invention relates to a sheet feeding device and a recording device that prevent so-called "double feeding" in which a plurality of sheets are fed in a stacked state in one feeding operation , and further relates to a sheet feeding device capable of switching the feeding mode according to the specification of the sheet used. Background technique [0003] As a sheet feeding device for feeding a sheet such as a recording sheet or a film, a structure is generally used that is provided with a separating mechanism for separating a plurality of stacked sheets or for preventing Double feeding prevention mechanism for double feeding of sheets. [0004...
Claims
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IPC IPC(8): B65H3/00B65H29/00B41J13/10B41J13/26B65H3/06B65H3/52B65H5/06B65H9/20
CPCB65H2301/512125B41J13/26B65H3/0661B65H5/062B65H2403/481B65H3/5215B65H3/565B65H3/0669B65H9/20B65H2301/42344B65H2403/72B65H9/004B41J13/103B65H3/5261B65H2404/7231B65H3/0607
Inventor 园田信哉西端望新町昌也
Owner CANON KK