IMAGE FORMING APPARATUS AND IMAGE FORMING METHOD

Japanese Patent JP2015009467

A

PROBLEM TO BE SOLVED: To provide an image forming apparatus capable of reducing the likelihood that a boundary between transfer material regions is erroneously detected when image formation is newly carried out by using an unused portion of a partially used transfer material region.SOLUTION: An image forming apparatus transfers a transfer material to each transfer material region while conveying a band-shaped transfer medium 4 on which a plurality of transfer material regions (Y, M, C, OP) of a first size each corresponding to a plurality of transfer materials are repeatedly disposed longitudinally in a predetermined order, to thereby form on a recording medium an image of the first size or a second size which is half or less the first size. When an image of the second size is newly formed by using unused portions of the transfer material regions already used for image formation of the second size, the image forming apparatus conveys the transfer medium in a forward direction until an unused portion of the next transfer material region adjacent to the used portion of one transfer material region comes to a detection position, and then conveys the transfer medium in a reverse direction, so as to detect the boundary between the used portion and the unused portion from the unused portion side.

YOSHIZAWA MASAO
KAMIYA HIROTAKA
MATSUMURA KEIJI

JP2013136910A

January 19, 2015

June 28, 2013

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CITIZEN HOLDINGS CO LTD
CITIZEN SYSTEMS JAPAN CO LTD

B41J2/325; B41J17/02; B41J17/36

JP2004202941A	2004-07-22
JP2001246823A	2001-09-11
JPH01291977A	1989-11-24

US7553096B2

2009-06-30

Aoki 篤
Tsuruta Junichi
Tomohiro Minamiyama
Koichi Itsubo
Hagiwara Ryoichi

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