US 12,011,943 B2
Image forming apparatus
Maiko Miyoshi, Izunokuni Shizuoka (JP); Hiroshi Kiyomoto, Hiratsuka Kanagawa (JP); Yui Hiyoshi, Mishima Shizuoka (JP); and Taishi Fukazawa, Tokyo (JP)
Assigned to TOSHIBA TEC KABUSHIKI KAISHA, Tokyo (JP); PILOT CORPORATION, Tokyo (JP); and THE PILOT INK CO., LTD., Nagoya (JP)
Filed by Toshiba Tec Kabushiki Kaisha, Tokyo (JP); PILOT CORPORATION, Tokyo (JP); and THE PILOT INK CO., LTD., Aichi (JP)
Filed on Mar. 17, 2022, as Appl. No. 17/697,754.
Claims priority of application No. 2021-045919 (JP), filed on Mar. 19, 2021.
Prior Publication US 2022/0297458 A1, Sep. 22, 2022
Int. Cl. B41J 2/21 (2006.01); B41M 5/00 (2006.01)
CPC B41M 5/0023 (2013.01) [B41J 2/2114 (2013.01)] 20 Claims
OG exemplary drawing
 
1. An image forming apparatus, comprising:
a first supplying device configured to supply a first ink onto a recording medium to form a non-color print layer on the recording medium, the first ink comprising non-color particles; and
a second supplying device configured to supply a second ink onto the recording medium having the non-color print layer formed thereon, to form a color print layer on the recording medium, the second ink comprising color pigment particles that are decolored when heated,
wherein an average particle size D1 of the color pigment particles and an average particle size D2 of the non-color particles satisfy a relationship represented by an inequality 0.5<D2/D1<5.