U.S. patents available from 1976 to present.
U.S. patent applications available from 2005 to present.

Icon_funbox Famous Patents

The ice cream cone was invented at the St. Louis Worlds Fair by Ernest Hamwi in 1904. His waffle booth was next to an ice cream vendor who ran short of dishes. Hamwi rolled a waffle to hold ice cream and the cone was born.

Newsletter  PatentStorm News

Make the Most of Our Site

See this month's Top Inventors and Most Cited Patents.

Stay on top of the latest innovations by subscribing to an RSS feed.

Registered users: Manage your profile.

 

Class 400/636.1 - With typewriter-actuated control of feed-roller position


Subclass of Class 400 - Typewriting machines
Definition: Subject matter wherein a feed-roller* is movable
No. of patents: 52
Last issue date: 05/06/2008


1    
NumberTitleIssue Date
7367731Feeding accuracy adjustment apparatus, recording apparatus, liquid ejecting apparatus, feeding accuracy adjustment method for recording medium
The printer 1 includes a controller 32 for feeding at least a sort of recording medium P to a feed mechanism, obtaining a tendency of degradation of feed accuracy with respect to at least one sort of the recording medium, calculating an adjustment valu...
05/06/2008
7284924Printer and control method thereof
An encoder is adapted to be opposed to a scale provided with a plurality of marks or slits arranged in a first direction at predetermined intervals. A plurality of detectors is arranged in a second direction perpendicular to the first direction while being staggered...
10/23/2007
6935715Method of ink jet printing with improved end of page printing
A print medium is printed on with a printhead of an ink jet printer. The print medium is advanced in an advance direction a predetermined amount. The print medium is printed on with the printhead in an area corresponding to the predetermined amount. A determination ...
08/30/2005
6893174Error mapping technique for a printer
The present invention relates to a method and system for accurately indexing print receiving media of various types. A media indexing system is provided that includes a roller capable of indexing a print receiving medium in response to an indexing operation. A relat...
05/17/2005
6830399Methods and systems for compensation of media indexing errors in a printing device
Methods and systems are provided for compensating for media indexing errors in a printing device. In one embodiment, the method comprises identifying a desired amount by which the print receiving medium should be indexed in order to print at the next location for th...
12/14/2004
6789968Printer having a selector associated with a carriage for actuating a plurality of switching mechanisms
A printer having a plurality of switching mechanisms movable between a first position and a second position. A selector is associated with a carriage of the printer such that the carriage moves the selector so as to actuate at least one of the switching mechanisms t...
09/14/2004
5954440Thermal printer with sheet pressure means
Thermal printer with a thermal head (16) for image-wise heating a heat-sensitive sheet (38) according to an elongate printing zone, transverse with respect to the sheet, and a rotatable print drum (15) for conveying such sheet past such thermal head while...
09/21/1999
5775824Ink-jet printing apparatus for ejecting recording paper upon opening cover thereof
A conveyance apparatus for an ink-jet printer for ejecting sheets of recording paper from the ink-jet printer regardless of whether the cover to the printer is closed or open. The ink-jet printing apparatus has a cartridge including a print head for formi...
07/07/1998
5775823Automatic sheet feeder
An automatic sheet feeding apparatus includes a sheet supporting device for supporting a sheet; an auxiliary roller for feeding a sheet supported on the sheet supporting device; a separating device, having a separation roller and a friction separation dev...
07/07/1998
5718523Thermal transfer printing device and method
A thermal transfer printer for printing images and patterns on a card with thermally transferable color inks while moving the card back and forth in such a state that the card is held and urged against a thermal print head through an ink ribbon by capstan...
02/17/1998
5681124Printer with displaceable trailing roller
This invention provides a printer in which the printer head can be removed easily and reduction of printer size can be realized. This is achieved because a displaceable trailing roller can be moved to a location where it does not interfere with the remova...
10/28/1997
5646668Ink jet printer
An ink jet printer including a recording device for jetting ink droplets from a printer head while moving in a direction perpendicular to the direction of conveyance of a recording medium in the form of a sheet, to form a dot image on the recording medium...
07/08/1997
5441353Borderless printer having a rotating drum with clamp assembly
A borderless printer includes a clamp assembly having a clamp; at least one roller installed on the clamp and located on the circumferential surface of a drum and rotating while in contact with the drum; and a clutch placed between the clamp and drum, for...
08/15/1995
5397191Printer having paper feed roller
A printer which is compact, can accurately supply paper and has reduced noise characteristics. Additionally, the printer enables easy correction of paper jams and can be selectively operated in various modes according to the user's preference. The printer...
03/14/1995
5378071Video printer
A video printer is disclosed in which a duplicated driving force is not applied to a sheet of paper 2 in a printing mode. Pressing rollers 101 are pressed against and separated away from paper-ejecting rollers 100 by a pressing mechanism 18 of a paper-eje...
01/03/1995
5294204Multi-line printer for slips or the like
A data printer wherein a slip is dropped in a guide chute and a serially operable print head is moved along the length of the slip to print a line of characters. A line feed device comprises a drive gear meshing with a driven gear carrying a feed roller f...
03/15/1994
5209590Paper bailing apparatus for printer
A paper bailing apparatus for a printer which holds paper against the platen by a bail roller. In order to drive the bail roller from the release position to the bailing position, the driving force of the paper feed gear is utilized. The paper feed gear t...
05/11/1993
5182861Sheet-driven type automatic drafting machine
A sheet-driven type automatic drafting machine has a drive roller or rollers and a rotary drive mechanism connected to the drive roller or rollers, a Y-axis rail extending in the Y-axis direction above the drive roller or rollers, a line-drafting head mov...
02/02/1993
5165806Thermal printer with movable drive roll
A printer comprises a cassette bay (8) having a lid (16), a printing mechanism comprising a thermal print head (26) and a platen (32) and a mechanism (38, 50) for moving the theremal print head between an inoperative and an operative position. The mechani...
11/24/1992
5078519Printer with two-stage skew adjustment
Two-stage skew adjustment is achieved by first using only the drive force of the platen roller with the pinch roller and the capstan roller drive disrupted by a gap opening mechanism to effect a large skew adjustment. Then, the gap is closed and the plate...
01/07/1992
5078524Paper retaining mechanism
A paper retaining mechanism includes a support structure supporting a platen, a carriage mounted on the support structure for movement parallel to the platen to an end position, and a paper retaining device which includes a lever rotatably mounting a pape...
01/07/1992
5030024Sheet feeding device in a printer
A printer system having a sheet feeding device for selectively feeding one of a single sheet and a continuous includes a platen arranged adjacent a printing unit; a sheet detector disposed on a sheet feeding path along which the single and continuous shee...
07/09/1991
5020929Paper feed device
In an automatic paper feed device having a platen and a paper bail arranged to be brought into and out of contact with the platen, the paper bail is further constituted to be brought into contact during a paper is fed in an predetermined amount, and to be...
06/04/1991
5017031Printing apparatus having an automatic paper insertion function
A printing apparatus includes one detection switch which is operated according to the movements of a carriage and a paper bail unit. The detection signal outputted from the detection switch is used for a control to locate the carriage to an origin positio...
05/21/1991
5009527Thermal transfer color printer with sheet retaining and guiding structure adjacent platen
A thermal transfer color printer for printing color images on individual sheets of paper. One sheet of paper at a time is removed from a stack of paper stored in a cassette and this sheet is transported by a reversible platen roller in a first or forward ...
04/23/1991
4971469Automatic paper loading mechanism and method for printer
In a printer in which a paper is pressed against a platen by a bail roller, the bail roller is automatically released from the platen, during paper loading, so as not to obstruct the paper feeding. The bail roller is pivotally moved between a loading position ...
11/20/1990
4961658Feed roller release due to carriage movement in a printing apparatus
A printer comprising a frame, a platen for supporting printing paper, a carriage reciprocally movable along said platen and having a print head mounted thereon defining a print point, paper feed rollers for feeding said printing paper through said printin...
10/09/1990
4960338Dual printer system
A printing system comprises: (x1) a source of A data and B data to be separately printed; a first printer connected with that source to receive the A data for printing it on a first sheet, such as an envelope, and to pass the B data; and a seco...
10/02/1990
4947185Thermal printing system with automatic crumbled paper release
In a thermal printing system having an automatic paper feeding mechanism paper may be misfed and become crumpled between one of a pair of spring biased pinch rollers and the platen of the printing machine. A mechanism is provided for automatically releasi...
08/07/1990
4941762Switching mechanism for a paper holding roller of a printer
A mechanism for switching a paper holding roller of an automatically feeding printer between a contact position for holding a paper against the platen and a separation position away from the platen utilizing the platen power source. A transmission mechani...
07/17/1990
4883375Printing device
A guide shaft guides a print head, which moves along a print line of a platen to perform a printing operation. A rotating member and an eccentric cam member, having a toothed sector portion on its periphery, are mounted on the guide shaft. The guide shaft...
11/28/1989
4859099Automatic paper loading apparatus for printer having paper bail actuating device
An apparatus for automatically loading a printer with a recording medium, having a medium feeding motor, a carriage with a print head, a medium guide pivotable between a first position for urging the medium against a medium support, and a second position ...
08/22/1989
4808019Unified paper path printer
A printer is disclosed having an improved paper feed mechanism. The improved paper feed system has a reduced cost and accepts a wide variety of paper types including continuous forms and single cut sheets fed both by hand and from a paper tray. Furthermor...
02/28/1989
4744681Form printer
A form printer comprises: (a) a feed plate adjacent which a form is fed in a longitudinal feed direction; (b) a print head for printing the form; (c) a first drive roller or rollers at one longitudinal side of the print head, and a second drive roller or rolle...
05/17/1988
4722624Control apparatus for paper pressure rollers of printing machines
The control apparatus, in particular for electronic typewriters, comprises a lower guide for guiding a sheet of paper beneath a platen roller and up to a printing line of the platen roller, and a series of paper pressure rollers for guiding the sheet beyo...
02/02/1988
4717274Printer
There is disclosed a printer provided with a sheet advancing roller to be wound by a printing sheet and for advancing the printing sheet upon rotation, first and second movable pressure rollers which can be contacted with or separated from the sheet advan...
01/05/1988
4693621Paper loading device of printer
The invention provides a paper loading device for a printer wherein, when paper is to be loaded onto a platen, in response to operation of a button or a lever with paper set in position, the platen is driven to cause the paper to be loaded thereto, and up...
09/15/1987
4662765Integrated printer and paper feeding apparatus
There is illustrated and described a printing device having an integrated paper feeding apparatus adapted for supplying individual sheets of paper to the printing device to effect printing thereon. The integrated printer and paper feeding apparatus for th...
05/05/1987
4598300Image building apparatus
An improved image building apparatus for building color image on paper by transfering thereto a plurality of coloring agents on thermal transfer ribbon by means of a thermal head while reciprocably conveying paper by rotating a platen is disclosed. To ass...
07/01/1986
4581618Recorder having paper feed mechanism
A recorder comprises first drive means for feeding a record paper to a stand-by position, second drive means for feeding the record paper from the stand-by position to a record position, and transport means for retracting a retainer which retains the reco...
04/08/1986
1    
 
Sign InRegister
Username  
Password   
forgot password?