Patents by Inventor Hiroaki Takagishi
Hiroaki Takagishi has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 8113499Abstract: When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.Type: GrantFiled: June 17, 2010Date of Patent: February 14, 2012Assignee: Canon Kabushiki KaishaInventors: Hideki Kushida, Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hiromasa Katayama
-
Publication number: 20100252980Abstract: When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.Type: ApplicationFiled: June 17, 2010Publication date: October 7, 2010Applicant: CANON KABUSHIKI KAISHAInventors: Hideki Kushida, Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hiromasa Katayama
-
Patent number: 7798491Abstract: A registration unit includes a skew correction roller pair configured to rotate a sheet conveyed from a conveyance roller pair and to correct skew of the sheet. The registration unit sheet further includes a projectable swinging guide arranged between the conveyance roller pair and the skew correction roller pair to deflect the sheet. The skew correction roller pair corrects the skew of the sheet deflected by the swinging guide.Type: GrantFiled: August 7, 2007Date of Patent: September 21, 2010Assignee: Canon Kabushiki KaishaInventors: Junichi Moteki, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Seiichiro Kameda, Youichi Chikugo, Satohisa Tateishi, Kozo Inoue
-
Patent number: 7762540Abstract: When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.Type: GrantFiled: January 23, 2009Date of Patent: July 27, 2010Assignee: Canon Kabushiki KaishaInventors: Hideki Kushida, Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hiromasa Katayama
-
Patent number: 7748697Abstract: A sheet feeding apparatus according to an aspect of the invention includes conveying suction belts which have a function of rotating an adsorbed sheet and a function of conveying the sheet; a suction fan 112 which adsorbs the sheet to the belts; CCDs which detect a position and an skew in a direction orthogonal to a sheet conveying direction while the sheet is adsorbed to the belts; and a control device for driving the belts to rotate the sheet according to signals of CCDs in order to correct an attitude of the sheet adsorbed to the belts.Type: GrantFiled: November 7, 2007Date of Patent: July 6, 2010Assignee: Canon Kabushiki KaishaInventors: Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Kozo Inoue, Seiichiro Kameda, Junichi Moteki, Satohisa Tateishi, Youichi Chikugo
-
Patent number: 7578497Abstract: The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.Type: GrantFiled: July 17, 2008Date of Patent: August 25, 2009Assignee: Canon Kabushiki KaishaInventors: Wataru Kawata, Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Hideki Kushida, Hiromasa Katayama
-
Patent number: 7549629Abstract: An air heating mechanism for heating the air which is blown from a loosening/separating nozzle toward the top sheet attracted to an attracting and conveying unit is provided. A control unit controls the air heating mechanism based on moisture content information from a sensor for detecting a moisture content of a sheet supported by the tray.Type: GrantFiled: May 10, 2007Date of Patent: June 23, 2009Assignee: Canon Kabushiki KaishaInventors: Satohisa Tateishi, Junichi Moteki, Youichi Chikugo, Seiichiro Kameda, Kozo Inoue, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama
-
Publication number: 20090140483Abstract: When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.Type: ApplicationFiled: January 23, 2009Publication date: June 4, 2009Applicant: CANON KABUSHIKI KAISHAInventors: HIDEKI KUSHIDA, TARO IKEDA, HIROAKI TAKAGISHI, KENICHI HAYASHI, TOMOKAZU NAKAMURA, WATARU KAWATA, HIROMASA KATAYAMA
-
Patent number: 7530560Abstract: When a sheet bundle is being conveyed by any one pair of plural pairs of rollers independently movable toward and away from the bundle sheet, before the bound portion of the sheet bundle passes the pair of rollers, the pair of rollers on the downstream side nearest to the bound portion are separated from the sheet bundle, and the pairs of rollers more downstream than that pair convey the sheet bundle. Thereby, it happens less often that the pairs of rollers gather the air collected between adjacent ones of the sheets of the sheet bundle to the bound portion to thereby cause a slack to the sheets, and the occurrence of wrinkles or twists in the sheet bundle can be reduced. Also, the pair of rollers are separated from the sheet bundle before the bound portion passes the pair of rollers, whereby it happens less often that the pair of rollers are damaged by the bound portion, and the sheet bundle can be conveyed smoothly.Type: GrantFiled: June 30, 2005Date of Patent: May 12, 2009Assignee: Canon Kabushiki KaishaInventors: Hideki Kushida, Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hiromasa Katayama
-
Publication number: 20080277857Abstract: The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.Type: ApplicationFiled: July 17, 2008Publication date: November 13, 2008Applicant: CANON KABUSHIKI KAISHAInventors: WATARU KAWATA, TARO IKEDA, HIROAKI TAKAGISHI, KENICHI HAYASHI, TOMOKAZU NAKAMURA, HIDEKI KUSHIDA, HIROMASA KATAYAMA
-
Patent number: 7429037Abstract: The sheet processing apparatus is equipped with a process tray on which sheets conveyed are stacked, a return belt which moves the sheets stacked on the process tray, a trailing edge stopper which receives an end portion of the sheets moved by the return belt, and a conveyance assist roller which comes into contact with the sheets on the upstream side of the return belt with respect to the sheet moving direction and imparts a load to the movement of the sheets. The return belt moves the sheets to which a load has been imparted by the conveyance assist roller and causes them to be abutted on the trailing edge stopper.Type: GrantFiled: July 14, 2005Date of Patent: September 30, 2008Assignee: Canon Kabushiki KaishaInventors: Wataru Kawata, Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Hideki Kushida, Hiromasa Katayama
-
Patent number: 7420716Abstract: An object of this invention is to provide an image reading apparatus capable of reading an original image at high speed. And other object is to provide an image reading apparatus in which even when heat is generated at an inverter, reading operation is not influenced. In order to achieve these object, the image reading apparatus is comprised with a scanning means including, a light source for illuminating an original, an image pickup element for receiving reflected light from the original, a cabinet and an inverter provided at a vicinity of a side face of the cabinet in parallel with a direction of moving the light source for driving the light source, a communicating means provided at a vicinity of a side face of the cabinet opposed to the side face at the vicinity of the inverter and a cooling fan for cooling an interval between the inverter and the communicating means.Type: GrantFiled: April 2, 2003Date of Patent: September 2, 2008Assignee: Canon Kabushiki KaishaInventors: Takeshi Aoyama, Hiroaki Takagishi, Takayuki Suga
-
Patent number: 7410156Abstract: A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.Type: GrantFiled: March 20, 2007Date of Patent: August 12, 2008Assignee: Canon Kabushiki KaishaInventors: Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hideki Kushida, Hiromasa Katayama
-
Publication number: 20080111297Abstract: A sheet feeding apparatus according to an aspect of the invention includes conveying suction belts which have a function of rotating an adsorbed sheet and a function of conveying the sheet; a suction fan 112 which adsorbs the sheet to the belts; CCDs which detect a position and an skew in a direction orthogonal to a sheet conveying direction while the sheet is adsorbed to the belts; and a control device for driving the belts to rotate the sheet according to signals of CCDs in order to correct an attitude of the sheet adsorbed to the belts.Type: ApplicationFiled: November 7, 2007Publication date: May 15, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Kozo Inoue, Seiichiro Kameda, Junichi Moteki, Satohisa Tateishi, Youichi Chikugo
-
Publication number: 20080036137Abstract: A registration unit includes a skew correction roller pair configured to rotate a sheet conveyed from a conveyance roller pair and to correct skew of the sheet. The registration unit sheet further includes a projectable swinging guide arranged between the conveyance roller pair and the skew correction roller pair to deflect the sheet. The skew correction roller pair corrects the skew of the sheet deflected by the swinging guide.Type: ApplicationFiled: August 7, 2007Publication date: February 14, 2008Applicant: CANON KABUSHIKI KAISHAInventors: Junichi Moteki, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama, Seiichiro Kameda, Youichi Chikugo, Satohisa Tateishi, Kozo Inoue
-
Publication number: 20070267803Abstract: An air heating mechanism for heating the air which is blown from a loosening/separating nozzle toward the top sheet attracted to an attracting and conveying unit is provided. A control unit controls the air heating mechanism based on moisture content information from a sensor for detecting a moisture content of a sheet supported by the tray.Type: ApplicationFiled: May 10, 2007Publication date: November 22, 2007Applicant: CANON KABUSHIKI KAISHAInventors: Satohisa Tateishi, Junichi Moteki, Youichi Chikugo, Seiichiro Kameda, Kozo Inoue, Takashi Fujita, Hiroaki Takagishi, Nobuto Kamiyama
-
Patent number: 7288059Abstract: A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.Type: GrantFiled: July 14, 2005Date of Patent: October 30, 2007Assignee: Canon Kabushiki KaishaInventors: Taro Ikeda, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hideki Kushida, Hiromasa Katayama
-
Publication number: 20070161489Abstract: A sheet processing apparatus includes a processing tray on which sheets are stacked in a bundle form, an intermediate portion stapler which staples the intermediate portion of the sheet bundle stacked on the processing tray, a sheet bundle conveying member which conveys the stapled sheet bundle, a curved sheet bundle conveying path which is downwardly curved on the downstream side of the processing tray with respect to the sheet conveying direction and adapted to guide the sheet bundle conveyed by the sheet bundle conveying member, and a folding device which is arranged in the intermediate portion of the curved sheet bundle conveying path and which folds the stapled sheet bundle, wherein the processing tray is set to be lower on the upstream side than on the downstream side with respect to the sheet conveying direction, and wherein the curved guide path has an extended portion extending to a position under the stacking portion.Type: ApplicationFiled: March 20, 2007Publication date: July 12, 2007Applicant: CANON KABUSHIKI KAISHAInventors: TARO IKEDA, Hiroaki Takagishi, Kenichi Hayashi, Tomokazu Nakamura, Wataru Kawata, Hideki Kushida, Hiromasa Katayama
-
Patent number: 7120383Abstract: An image forming apparatus has an image reading portion for reading an image of an original and which is disposed in an upper part of the apparatus, an image forming portion for forming an image on a sheet and which is disposed below the image reading portion with a space portion between the image reading portion and the image forming portion, and a sheet delivery portion disposed in the space portion. There is a taper formed on an edge portion of a bottom of the image reading portion defining the space portion so that a sheet treating apparatus for performing treatment such as sorting, alignment, or stapling of sheets on which the images are formed, is mounted in the space portion.Type: GrantFiled: July 8, 2003Date of Patent: October 10, 2006Assignee: Canon Kabushiki KaishaInventors: Akihiro Sato, Hiroaki Takagishi, Katsuhito Kato, Daisaku Kamiya
-
Patent number: 7107006Abstract: A sheet treating apparatus is mountable in a space portion of an image forming apparatus including an image-forming portion for forming an image on a sheet and an image-reading portion for reading an image of an original. The image-reading portion is disposed above the image-forming portion. The sheet is delivered in the space portion formed between the image-forming portion and the image-reading portion. The sheet treating apparatus includes a connection path unit to be connected with a sheet delivery path for delivering the sheet from the image-forming portion, which connection path unit is mounted in the space portion from the outside of a side surface of the main body of the image forming apparatus, and a sheet-treating unit for performing a treatment of the sheet transported from the connection path unit, which sheet-treating unit is mounted in the space portion from the front side of the main body of the image forming apparatus.Type: GrantFiled: March 14, 2006Date of Patent: September 12, 2006Assignee: Canon Kabushi KaishaInventors: Akihiro Sato, Hiroaki Takagishi, Katsuhito Kato, Daisaku Kamiya