公开(公告)号：DE69632174T2

公开(公告)日：2005-05-19

申请号：DE69632174

申请日：1996-08-08

Applicant: CANON FINETECH INC

Inventor： YONENUMA MASAHIRO ,  FURUKAWA HIDEAKI ,  NAKAZAWA NORIAKI

IPC: B65H29/00 ,  B65H43/08 ,  B42C1/12 ,  B65H31/18

Abstract: The present invention provides a sheet stacking apparatus for stacking discharged sheets on a sheet stacking plate, comprising a distance sensor disposed above the sheet stacking plate and having a light illumination portion for illuminating light toward the sheet stacking plate and a light receiving portion for receiving reflected light, and a control device for determining a distance between the distance sensor and a sheet stack rested on the sheet stacking plate and for judging a sheet stacking condition of the sheet stacking plate on the basis of the determined distance.

公开(公告)号：DE60009909T2

公开(公告)日：2005-04-21

申请号：DE60009909

申请日：2000-06-30

Applicant: CANON FINETECH INC

Inventor： HAYASHI KUNITOSHI ,  KAWAMURA IWAO

IPC: B41J2/175 ,  B41J2/01

Abstract: A contact base 40 is pushed by the printing head 18K, when the printing head 18K is mounted onto the carriage 16. Thereby, the connection face 32 of the flexible carriage wiring 30 together with the contact base 40 follows the connection face 62 of the of the flexible head wiring by swinging movement around the touching point in the directions of arrows X, X', Y, Y', Z, and Z'. Therefore, the connection face 32 slants to follow any slanting of the connection face 62. Consequently, the two connection faces 32, 62 come close together over the entire faces to give precise electric connection of the electric connection points between the two connection faces.

公开(公告)号：DE60010081T2

公开(公告)日：2004-12-30

申请号：DE60010081

申请日：2000-06-26

Applicant: CANON FINETECH INC

Inventor： MATSUDA YUJI

IPC: B41J29/393 ,  B41J2/045

Abstract: A sensor configuration and signal processing, which are not affected by a paper rise when a print pattern for auto head shading and density correction is read, are provided. A predetermined print pattern is printed with a plurality of heads, and the predetermined pattern that is printed is scanned with a sensor (110) to detect a density unevenness for the print pattern in each color on a nozzle basis. The sensor (110) comprises a light emitting element which emits a light including all light regions, R, G, and B, and a plurality of light receiving elements each of which receives R, G, and B lights, respectively. The plurality of light receiving elements are arranged in a main scanning direction. The print pattern printed by each head is read by the light receiving element for the complementary color light of the pattern and the light receiving element for a non-complementary color light of the pattern, and a change in density level in the nozzle column direction is detected based on the difference between the two outputs.

公开(公告)号：DE69731145D1

公开(公告)日：2004-11-18

申请号：DE69731145

申请日：1997-06-17

Applicant: CANON KK ,  CANON FINETECH INC

Inventor： NAKAJIMA NOBUYUKI ,  YAMADA SATORU

IPC: B41J2/01 ,  G06T1/20 ,  H04N1/00 ,  H04N1/401 ,  H04N1/405 ,  H04N1/60 ,  H04N1/46

Abstract: Inputted image data is subjected to image processing by the matching unit 513, luminance-density conversion unit 514, input correction unit 515, masking unit 516, head shading (HS) processing unit 517, tone reproduction curve (TRC) processing unit 518 and binarize processing unit 519. The selecting unit 133 controls at least the on/off of the process operation of the HS processing unit 517 and a binarization method of the binarize processing unit 519, in accordance with an image process condition set by the setting unit 14. On account of the above, when an image is printed, it is possible to easily set image quality and processing speed that is suitable for the usage of an output image.

公开(公告)号：DE69730293D1

公开(公告)日：2004-09-23

申请号：DE69730293

申请日：1997-10-31

Applicant: CANON FINETECH INC

Inventor： SAKURAI KENJI ,  NAKAYAMA KATSUO ,  MUKASA MITSUHIRO

IPC: B65H3/52

Abstract: A sheet feeding device is provided with sheet feeding means for feeding sheets supported on sheet supporting means, and sheet separating means provided downstream of the sheet feeding means with respect to the sheet feeding direction, the sheets fed by the sheet feeding means being separated one by one by the sheet separating means and fed. The sheet separating means is comprised of an inclined surface against which the sheet fed by the sheet feeding means strikes, a dash member provided downstream of the inclined surface with respect to the sheet feeding direction and against which the leading end of the sheet having cleared the inclined surface bears, and a resilient member for displaceably supporting the dash member when the sheet strikes against the dash member.

公开(公告)号：DE60010931D1

公开(公告)日：2004-06-24

申请号：DE60010931

申请日：2000-12-15

Applicant: CANON FINETECH INC

Inventor： MIYAMOTO KAZUTAKA ,  MARUYAMA CHIHIRO

IPC: B41J2/175 ,  B41J2/165 ,  B41J2/18 ,  B41J2/185

Abstract: An ink (pigment ink) is ejected only from a nozzle 22K of a printing head 20K onto an ink absorbent 34K without ejecting inks from printing heads 20C,20M,20Y. Then a carriage 24 is moved in an arrow B' direction to bring the printing head 20C just above a cap 32K. In this state, the ink (dye ink) is ejected only from the nozzle 22C of the printing head 20C onto the ink absorbent 34K to allow the dye ink to flow in a waste ink tube 36K. Similarly, the ink (dye ink) is ejected only from the nozzle 22M of the printing head 20M onto the ink absorbent 34K. Thereby, the pigment ink flows smoothly through the waste ink tube without causing clogging of the waste ink tube with gel of the pigment ink.

公开(公告)号：DE69908899T2

公开(公告)日：2004-04-29

申请号：DE69908899

申请日：1999-09-10

Applicant: CANON FINETECH INC

Inventor： SUGIYAMA YUICHI ,  FUKUDA MICHITAKA

IPC: B41J2/01 ,  B41J2/045 ,  G06K15/10 ,  A61P35/04 ,  B01J23/10 ,  G06F3/12

Abstract: The number of signal lines of a cable between a controller and a carriage is small, and the printing timing of each head is adjustable in units each smaller than one pixel. The signal lines include a signal line for serial printing data including printing data arranged in a predetermined order for printing heads, a signal line for a clock corresponding to each bit of the data, a signal line for a signal HDSL Ä1..0Ü representing that the printing data included in the serial printing data corresponds to which printing head, and signal lines for the signals for driving the heads. Before transferring data, one slice section corresponding to the time slot for transferring the unit printing data for each head is divided into sections, and further the sections are divided into subsections the number of which is equal to the number of print heads. The transfer of printing data is started from arbitrary subsection independently for each head.

公开(公告)号：AU761474B2

公开(公告)日：2003-06-05

申请号：AU3873201

申请日：2001-04-18

Applicant: CANON FINETECH INC

Inventor： HIGUMA MASAHIKO

IPC: B41J2/175

Abstract: An ink container for supplying ink out of a main body (1) thereof through an ink supply port (1A), the container includes an ink retaining material (2) for retaining the ink in the main body of the container; pressure adjusting means (10) for adjusting a pressure in the main body; and a valve member (8) disposed in the ink supply port; the valve including a substantially non-elastic plug member (8c) for plugging the ink supply port and an elastic member (8d) for urging the substantially non-elastic member toward the ink supply port.

公开(公告)号：DE602006020644D1

公开(公告)日：2011-04-28

申请号：DE602006020644

申请日：2006-01-19

Applicant: CANON FINETECH INC

Inventor： FUJII TOMOHIRO ,  ISHINAGA HIROYUKI ,  MUKAI KAYO

IPC: B41J2/175

公开(公告)号：DE69936689T2

公开(公告)日：2008-04-10

申请号：DE69936689

申请日：1999-01-29

Applicant: CANON FINETECH INC

Inventor： TAKATA YUTAKA ,  SUGIYAMA YUICHI ,  FUKUDA MICHITAKA

IPC: B41J2/01 ,  B41J2/21 ,  B41J29/393 ,  B41J29/46 ,  G01B11/00 ,  G01N21/88 ,  G01N21/956 ,  H04N1/23 ,  H04N1/403

Abstract: An ink-jet image forming device such that the test pattern detecting accuracy is improved with a single photodetector. A binarizing circuit (16) which binarizes the output of a sensor for a test pattern includes a peak hold circuit (82) which follows slow change in the sensor output, a voltage dividing circuit (83) which divides the held output, and a comparator (84) which converts the sensor output into a bi-level signal by using the output of the circuit (83) as a threshold.