Kyocera Mita Corporation

Kyocera Document Solutions Inc.

Akizou Ohtani

Fujio Tabata

Hideto Miyanagi

A remaining amount detector measures beforehand a distance H where there is one sheet. A motor displaces a lifting plate to a paper-feeding position upon storing paper in the feeding unit. The remaining amount detector measures a distance y1 to the lower face of a paper stack. Thereafter, upon transport of paper from the stack, a control unit causes the remaining amount detector to measure a distance y2 for every predetermined number n of fed sheets. A remaining sheet calculation unit calculates a displacement y1&#x2212;y2=&#x394;y to the bottom of the paper stack S, and calculates the thickness of one sheet on the basis of the displacement &#x394;y and the number n of fed sheets (t=&#x394;y/n). The remaining sheet calculation unit divides the thickness (H&#x2212;y2) of the paper stack by the thickness t of one paper sheet, and calculates the number of remaining sheets m as (m=((H&#x2212;y2)/t)+1).

Paper feeding device and image forming apparatus

An optical reading device includes a housing, a document platen member, a scanning unit, a cable and an insulating sheet. The cable includes a first end which is fixed to the scanning unit, a second end which is fixed to the bottom plate and an intermediate portion which is held in surface contact with the bottom plate and curved and deformed according to a reciprocal movement of the scanning unit. The insulating sheet is interposed between the bottom plate and the intermediate portion of the cable. The housing includes a recess formed in the bottom plate. The insulating sheet covers an opening of the recess, the upper surface thereof is in contact with the intermediate portion of the cable and a space is formed between the lower surface of the insulating sheet and the bottom surface of the recess.

Suppressing unstable electrical coupling between a bottom plate and a cable by providing a recess on the bottom plate for attachment of the cable

A remaining amount detector measures beforehand a distance H where there is one sheet. A motor displaces a lifting plate to a paper-feeding position upon storing paper in the feeding unit. The remaining amount detector measures a distance yto the lower face of a paper stack. Thereafter, upon transport of paper from the stack, a control unit causes the remaining amount detector to measure a distance yfor every predetermined number n of fed sheets. A remaining sheet calculation unit calculates a displacement y&#x2212;y=&#x394;y to the bottom of the paper stack S, and calculates the thickness of one sheet on the basis of the displacement &#x394;y and the number n of fed sheets (t=&#x394;y/n). The remaining sheet calculation unit divides the thickness (H&#x2212;y) of the paper stack by the thickness t of one paper sheet, and calculates the number of remaining sheets m as (m=((H&#x2212;y)/t)+1).

It is an object of the present invention to provide an image forming apparatus that achieves reduction in power and resumption time by selectively resuming a function which a user desires when a storage medium in which identification information for identifying the user is stored is exposed so as to perform resumption from the energy saving state. The image forming apparatus includes: two or more functions of a copy function, a printer function, a scan function and a FAX function; a radio communication portion that performs radio communication with a storage medium in which identification information for identifying a user is stored; and a control portion that when the radio communication portion obtains the identification information from the storage medium in a case where part of the apparatus is in an energy saving state, selects a function to be resumed from the energy saving state according to an exposure state in which the storage medium is exposed to the radio communication portion.

Growing community of inventors

Osaka, Japan

Akizou Ohtani