INK REMAINING AMOUNT CALCULATION METHOD AND DEVICE, AND INK CONTAINER

Title:

INK REMAINING AMOUNT CALCULATION METHOD AND DEVICE, AND INK CONTAINER

Document Type and Number:

WIPO Patent Application WO/2004/065125

Kind Code:

A1

Abstract:

An ink remaining amount calculation method calculates an ink discharge amount according to the rpm of a drive motor of an ink supply pump for sucking ink from an ink container and discharging the ink and calculates the ink remaining amount by subtracting the ink discharge amount from the whole (initial) ink amount. Even when a different type of ink is used, it is possible to accurately calculate the ink remaining amount. The ink type data is read out and acquired from storage means (5) of an ink container (4). Remaining amount calculation means (22) corrects the discharge amount of a predetermined standard ink per unit rpm according to the ink type acquired and accumulatively subtracts the corrected discharge amount multiplied by the operation time from the whole ink amount of the ink container (4) so as to obtain the remaining amount.

Inventors:

IWAMOTO MANABU (JP)
OSHIMA KENJI (JP)
ARAI MASAKATSU (JP)

Application Number:

PCT/JP2003/015549

Publication Date:

August 05, 2004

Filing Date:

December 04, 2003

Export Citation:

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Assignee:

RISO KAGAKU CORP (JP)
IWAMOTO MANABU (JP)
OSHIMA KENJI (JP)
ARAI MASAKATSU (JP)

International Classes:

B41J2/175; B41F31/02; B41F31/08; B41F33/02; B41L13/18; (IPC1-7): B41L13/18

Foreign References:

JPH03184889A	1991-08-12
JP2003072033A	2003-03-12
EP0755798A1	1997-01-29
JPH02148360U	1990-12-17
JP2001018507A	2001-01-23
US5129320A	1992-07-14

Other References: