Canon Kabushiki Kaisha

Hiroharu Nakajima

Toshiaki Ozawa

Hiroyuki Ueda

Hiroatsu Kondo

Yasuaki Yamada

Noriyuki Sugiyama

Naohisa Suzuki

Michihisa Kumamoto

Noboru Shimoyama

Toshihiko Bekki

Toshihide Wada

Yasufumi Tanaami

Hisatsugu Naito

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 device, for feeding one-by-one the sheet; a feeder for feeding the sheet separated by the separating means; auxiliary roller moving device for moving the auxiliary roller between an operative position where the auxiliary roller is in contact with the sheet and an inoperative position where it is away therefrom; a separation roller moving device for moving the separation roller between an operative position where the separation roller is in contact with the friction separating device and an inoperative position where the separation roller is away therefrom; wherein the auxiliary roller moving device and the separation roller moving device move the auxiliary roller and the separation roller from their operative positions to inoperative positions after the feeder starts to feed the sheet separated by the separation roller.

Automatic sheet feeder

A printing apparatus system includes a plurality of type units each having a plurality of type elements and each being different from the others. Each type unit may be mounted in the apparatus. A detector detects which of the type units is so mounted and produces a detection signal representative thereof. The printing pressure with which each type element is imprinted on a print medium is determined in accordance with the particular type wheel mounted in the apparatus as indicated by the detection signal. Additionally, the amount of advance of an ink ribbon for imprinting a type element on a type unit is determined in accordance with the particular type unit mounted in the apparatus, again as indicated by the detection signal.

Serial printing apparatus with sentence memory and display

A carriage on which an ink tank is mounted is moved acceleratively. Next, under this accelerative movement, a period of time spent moving a designated distance is measured. Finally, the amount of ink fluids in the ink tank is detected by the measured period of time and a message related to the amount of ink fluids is displayed. With these procedures, in an ink jet recording apparatus in which the ink tank for storing ink fluids to be supplied to the recording head is mounted on the carriage, the amount of ink fluids remaining in the ink tank can be detected using simplified structure.

Remaining ink detection in an ink jet recording apparatus

Serial printing apparatus with sentence memory and display having

Document processing apparatus and method for printing a document read

Serial printing apparatus including an error correcting capability and

A recording apparatus has a memory for storing information entered from a key input device, whereby the stored information can be used to rapidly and precisely position erasing means at a previously recorded indicium for erasure thereof. The apparatus may also have at least one drive system which controls the printing pressure, the amount of printing ribbon feeding, or the amount of printing sheet feeding, and a memory for storing information to regulate the drive systems. One embodiment of the apparatus is an electronic typewriter.

An improvement in movement of the recording section in a recording apparatus such as a typewriter, a printer or the like is provided. This recording apparatus comprises: a print ribbon cassette having a recording material; a carriage having a solenoid or a cam for moving the cassette; a detector for detecting the vertical or horizontal moving amount of the cassette; and a controller for controlling the moving condition of the cassette moved by the carriage on the basis of an output from the detector. The moving time of the ribbon cassette is changed in accordance with the typing speed of the operator or the size of character to be recorded. Thus, the whole printing time can be shortened and the noise generated in association with the typing operation can be reduced.

Recording apparatus having an improved mechanism for moving the

A printing apparatus includes a print wheel having a vertical lien character, a minus symbol character, and an underline symbol character. A first control moves a carriage on which the print wheel is mounted at one of two pitches and a second control advances a printing paper for receiving printing at one of two pitches in a direction generally perpendicular to the direction of movement of the carriage. Respective keys select the vertical line character and underline character for printing and the printing and paper-advancing pitches. One key signals repeat actuation of either the key selecting the vertical line character or the underline character and a memory stores actuation of the key for selecting the vertical line character. Printing of a vertical line character and advancement of paper is achieved by a control in response to actuation of the repeat signaling key, if the memory stores actuation of the vertical character key. Another control clears the memory in response to operation of any key other than the repeat signaling key.

Printing apparatus including error correction and memory means, for

A printing mechanism for printing on a recording medium includes a cam mechanism for moving an ink ribbon to an effecting position to act on the recording medium and an initial position for not acting on the recording medium. The cam mechanism includes a cam plate and a cam tracing pin guided in a cam groove within the cam plate, with the cam tracing pin traveling several courses in the cam groove. A driving device imparts rotary motion to the cam mechanism in two directions about a rotary axis and the cam tracing pin is guided in several stages of rotary motion.

Printing mechanism with a cam and groove arrangement

A recording apparatus for recording onto a recording medium and capable of correcting an erroneous recording includes an ink sheet mounting section on which an ink sheet for effecting the recording medium is mountable, a device for effecting the ink sheet to the recording medium, and a motor for driving the ink sheet. By a driving force produced by one directional rotation of the motor, the recording ink sheet is moved between an effecting position where the recording ink sheet is effected by the effecting device and a retracted position where the recording ink sheet retracts from the effecting position. Also, by a driving force produced by the motor, the correcting ink sheet is moved between an effecting position wherein the correcting ink sheet is effected by the effecting device and a retracted position where the correcting ink sheet retracts from the effecting position. Further, a conveying device conveys the correcting ink sheet without conveying the recording ink sheet in response to movement of the correcting ink sheet between the effecting and retracting positions.

Ink sheet drive system for a recording device

An electronic apparatus for drawing up documents. The apparatus includes an indicator for indicating registration of information, a keyboard for entering indicia and print pitch information, a memory including a first area for storing keyboard information, a second area for storing entered print pitch information, and a third area for storing registration information according to an indication by the indicator. The apparatus further includes a controller for, in response to the registration indication, storing the indicia information stored in the first area and the pitch information stored in the second area in the third area.

Serial printing apparatus with controllable pitch

An improved ink ribbon cassette for a serial printing apparatus comprises a body, first and second substantially coextensive spaced ink ribbon guide arms projecting from the body, each having a free end, and an ink ribbon mounted in the body for advancement during printing and having a portion extending between the free ends of the guide arms so as to be available for printing. One of the guide arms has a window therein through which the ribbon is visible. A first optically detectable indicator is carried on the ribbon at a position to be visible through the window when the ribbon is substantially exhausted. A second optically detectable structure is mounted on the guide arm adjacent the window and laterally spaced therefrom in the direction of movement of the ribbon. This second optically detectable structure indicates the type of ribbon in the cassette.

Ink ribbon cassette including means for identifying the type of ink

Disclosed is a printing mechanism having a printing head mounted on a carriage frame so as to linearly move the printing head toward a platen.

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Kodaira, Japan

Hiroharu Nakajima