Patents by Inventor Philip Scot Carter
Philip Scot Carter 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: 7305204Abstract: A two part cartridge having a photoconductor part (1) and a toner part (5) having no force biasing element on either part. The two parts fit together so that a developer roller (7) in the toner part contacts a photoconductor drum (3) in the other part. When the two parts are installed in a printer the cover (50), when closed, brings a spring (62) into contact with one side of the toner part while the frame (F) of the printer blocks movement away from the cover. An advantage of the two part cartridge is that the toner part can be replaced without replacing the photoconductor part. Members on the cartridge for force biasing are avoided and the need for training or skill to latch the parts together is avoided.Type: GrantFiled: September 26, 2006Date of Patent: December 4, 2007Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, Julia L. Fain, Mark Duane Foster
-
Patent number: 7139510Abstract: A two part cartridge having a photoconductor part (1) and a toner part (5) having no force biasing element on either part. The two parts fit together so that a developer roller (7) in the toner part contacts a photoconductor drum (3) in the other part. When the two parts are installed in a printer the cover (50), when closed, brings a spring (62) into contact with one side of the toner part while the frame (F) of the printer blocks movement away from the cover. An advantage of the two part cartridge is that the toner part can be replaced without replacing the photoconductor part. Members on the cartridge for force biasing are avoided and the need for training or skill to latch the parts together is avoided.Type: GrantFiled: February 14, 2005Date of Patent: November 21, 2006Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, Julia L. Fain, Mark Duane Foster
-
Patent number: 6879792Abstract: A two part cartridge having a photoconductor part (1) and a toner part (5) having no force biasing element on either part. The two parts fit together so that a developer roller (7) in the toner part contacts a photoconductor drum (3) in the other part. When the two parts are installed in a printer the cover (50), when closed, brings a spring (62) into contact with one side of the toner part while the frame (F) of the printer blocks movement away from the cover. An advantage of the two part cartridge is that the toner part can be replaced without replacing the photoconductor part. Members on the cartridge for force biasing are avoided and the need for training or skill to latch the parts together is avoided.Type: GrantFiled: December 15, 2003Date of Patent: April 12, 2005Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, Julia L. Fain, Mark Duane Foster
-
Patent number: 6871031Abstract: In a two piece toner cartridge assembly, as typically used in a computer and/or facsimile printing device, comprising separable photoconductor and developer units a unique coupling device is provided whereby the cartridge assembly may be removed from the printing device without the photoconductor unit separating from the developer unit for paper jam clearance or unit replacement. However, if desired the developer unit may be separately removed from the printing device for servicing or replacement without removal of the photoconductor unit.Type: GrantFiled: March 20, 2003Date of Patent: March 22, 2005Assignee: Lexmark International, Inc.Inventors: David Clay Blaine, John Andrew Buchanan, Philip Scot Carter, Matthew Thomas Kerley, Benjamin Keith Newman, Matthew Lee Rogers
-
Patent number: 6819884Abstract: Toner transfer in an imaging device having a developer roller (5) that applies toner to a photoconductive roller 7 is determined by counting pels (38) and by counting operating cycles (56). Additionally in the embodiment, various device factors including darkness setting and type of toner are also applied to the totals. An adjustment factor, stored in a toner cartridge memory, is originally substantially one and may be adjusted based on subsequent knowledge or observations of the results. A page count of pages imaged is also used dependently as a second basis for amount of toner transferred.Type: GrantFiled: July 31, 2003Date of Patent: November 16, 2004Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, William Keith Richardson, Jason Carl True
-
Publication number: 20040184834Abstract: In a two piece toner cartridge assembly, as typically used in a computer and/or facsimile printing device, comprising separable photoconductor and developer units a unique coupling device is provided whereby the cartridge assembly may be removed from the printing device without the photoconductor unit separating from the developer unit for paper jam clearance or unit replacement. However, if desired the developer unit may be separately removed from the printing device for servicing or replacement without removal of the photoconductor unit.Type: ApplicationFiled: March 20, 2003Publication date: September 23, 2004Inventors: David Clay Blaine, John Andrew Buchanan, Philip Scot Carter, Matthew Thomas Kerley, Benjamin Keith Newman, Matthew Lee Rogers
-
Publication number: 20040126133Abstract: A two part cartridge having a photoconductor part (1) and a toner part (5) having no force biasing element on either part. The two parts fit together so that a developer roller (7) in the toner part contacts a photoconductor drum (3) in the other part. When the two parts are installed in a printer the cover (50), when closed, brings a spring (62) into contact with one side of the toner part while the frame (F) of the printer blocks movement away from the cover. An advantage of the two part cartridge is that the toner part can be replaced without replacing the photoconductor part. Members on the cartridge for force biasing are avoided and the need for training or skill to latch the parts together is avoided.Type: ApplicationFiled: December 15, 2003Publication date: July 1, 2004Inventors: Philip Scot Carter, Julia L. Fain, Mark Duane Foster
-
Patent number: 6718147Abstract: Toner usage is measured with good accuracy. Printing tends to darken with the depletion of toner from a source. A toner cartridge employed in a printer (70) has the capability at the cartridge of determining the amount toner used. In an embodiment this is by a torsion spring (60) drive to a toner paddle (3). At turn-on and cover open, the amount of toner is measured at the cartridge (80). That is stored in NVRAM (78) when it is very different from the current amount stored in NVRAM. At certain amount levels observed at the cartridge the amount in NVRAM is revised to the new amount. Between those levels the amount of toner used is tracked by counting pels (94). Use amounts are converted to operating factors in a table (100), and the operating factors are applied to the printer to keep the darkness of printing more constant. Writing to NVRAM is minimized.Type: GrantFiled: November 4, 2002Date of Patent: April 6, 2004Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, Benjamin Keith Newman, William Keith Richardson, Jason Carl True
-
Patent number: 6701097Abstract: Toner hopper (1) of a printer (70) has a stirring paddle (3) with an encoder wheel (30, 50) mounted on paddle shaft (5). The drive connection to paddle (3) is through a torsion spring (60). Data processing apparatus determines paddle acceleration or deceleration (90, 94, 98, 102) and executes a table look-up to determine scaled amounts of subsequent movement (92, 96, 100, 104). Steady state movement is a unitary (unscaled) amount (106). These amounts are totaled (93) and used to define yield at the torsion spring, which corresponds to amount of toner in the hopper. This eliminates hardware in previous embodiments at the drive motor to signal actual rotation of the drive motor.Type: GrantFiled: December 17, 2002Date of Patent: March 2, 2004Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, Benjamin Keith Newman, William Keith Richardson, Kevin Dean Schoedinger
-
Publication number: 20040009007Abstract: A two part cartridge having a photoconductor part (1) and a toner part (5) having no force biasing element on either part. The two parts fit together so that a developer roller (7) in the toner part contacts a photoconductor drum (3) in the other part. When the two parts are installed in a printer the cover (50), when closed, brings a spring (62) into contact with one side of the toner part while the frame (F) of the printer blocks movement away from the cover. An advantage of the two part cartridge is that the toner part can be replaced without replacing the photoconductor part. Members on the cartridge for force biasing are avoided and the need for training or skill to latch the parts together is avoided.Type: ApplicationFiled: July 15, 2002Publication date: January 15, 2004Inventors: Philip Scot Carter, Julia L. Fain, Mark Duane Foster
-
Patent number: 6678489Abstract: A two part cartridge having a photoconductor part (1) and a toner part (5) having no force biasing element on either part. The two parts fit together so that a developer roller (7) in the toner part contacts a photoconductor drum (3) in the other part. When the two parts are installed in a printer the cover (50), when closed, brings a spring (62) into contact with one side of the toner part while the frame (F) of the printer blocks movement away from the cover. An advantage of the two part cartridge is that the toner part can be replaced without replacing the photoconductor part. Members on the cartridge for force biasing are avoided and the need for training or skill to latch the parts together is avoided.Type: GrantFiled: July 15, 2002Date of Patent: January 13, 2004Assignee: Lexmark International, Inc.Inventors: Philip Scot Carter, Julia L. Fain, Mark Duane Foster
-
Patent number: 6459876Abstract: A toner cartridge for use in a laser printer has a toner reservoir or hopper in which a first paddle rotates about a fixed first axis to sweep most of the toner volume of the cartridge to agitate and push the toner out of the toner reservoir or hopper through an exit port. A second paddle is pivotally mounted on the first paddle to sweep a volume of the toner reservoir or hopper in which a portion of the longitudinal wall of the toner reservoir or hopper of the toner cartridge is non-circular so as to produce a reduced cross section in the toner reservoir or hopper. The second paddle also initially engages the curved portion of the inner surface of the longitudinal wall of the toner reservoir or hopper and preferably has a tear drop cross section.Type: GrantFiled: July 18, 2001Date of Patent: October 1, 2002Assignee: Lexmark International, Inc.Inventors: John Andrew Buchanan, Chris Anthony Burdette, Philip Scot Carter, John William Kietzman, Benjamin Keith Newman, Matthew Lee Rogers