公开(公告)号：FR2290307A1

公开(公告)日：1976-06-04

申请号：FR7530575

申请日：1975-10-01

Applicant: IBM

Inventor： FINDLEY GERALD I ,  CUMMINGS KENNETH D ,  ANDERSON TEDDY L

IPC: B41B19/00 ,  B41J2/44 ,  B41J2/485 ,  B41J5/30 ,  G03G15/22 ,  G06F3/12 ,  G06K15/12 ,  H04N1/23 ,  B41J25/24 ,  G06K15/02

Abstract: In a printer in which character code bytes representing characters to be printed are translated into graphic code bytes, assembled into lines and pages, and thereafter used to select character image bits which are applied to modulate a scanning laser beam and thereby effect printing of the characters, the pitch of each character is determined independently of other characters in each line being printed by pitch bits included in the sets of character image bits. As each scan line of modulation bits from a set of character image bits is selected for use in modulating the laser beam, the pitch bit included within the bits is examined to determine whether the width of the charactor is to be a maximum or some value less than the maximum. For the maximum width all of the modulation bits are applied to modulate the laser beam, while for a character cell width less than the maximum, only a selected number of the modulation bits are used to modulate the laser beam. An oscillator maintains a constant clock rate for the system as it defines modulation periods for the individual bits, while associated timing circuitry controls the serial flow of selected modulation bits to modulate the laser beam as well as the successive addressing of the different graphic code bytes in the line being printed.

公开(公告)号：CA1044607A

公开(公告)日：1978-12-19

申请号：CA236359

申请日：1975-09-25

Applicant: IBM

Inventor： FINDLEY GERALD I ,  ANDERSON TEDDY L

IPC: B41B19/00 ,  B41J2/44 ,  B41J5/30 ,  G03G15/22 ,  G06F3/12 ,  G06K15/12 ,  H04N1/23

Abstract: INTERMIXED LINE HEIGHTS AND BLANK LINE FORMATION IN A BUFFERED PRINTER Intermixing of line heights in a buffered printer is accomplished by storing a different byte in a forms control buffer for each line of coded character data in a page to be printed. As the coded data of each line is advanced for printing by an arrangement which modulates a laser beam during scanning across a printable medium to effect the printing, the byte within the forms control buffer corresponding to the line about to be printed causes selection of the number of scans of the laser beam to be used in printing the line, thereby determining the height of each line independently of the other lines in the page. Blank lines in the page are formed by channel commands to the printer which instruct an address register associated with the forms control buffer to be incremented to cause skipping to a particular channel number identified by one of the bytes in the forms control buffer or to cause spacing by a specified number of lines. Each time the address register is incremented a special coded byte is inserted into the page being made up of the coded character data. Upon printing the occurrence of each special coded byte causes inhibiting of the printing arrangement, thereby forming a blank line.

公开(公告)号：FR2290309A1

公开(公告)日：1976-06-04

申请号：FR7530568

申请日：1975-09-29

Applicant: IBM

Inventor： ANDERSON TEDDY L ,  FINDLEY GERALD I

IPC: B41B19/00 ,  B41J2/44 ,  B41J5/30 ,  G03G15/22 ,  G06F3/12 ,  G06K15/12 ,  H04N1/23 ,  B41J7/70 ,  B41J3/20 ,  B41J25/24 ,  G06K15/02

公开(公告)号：CA1051349A

公开(公告)日：1979-03-27

申请号：CA236360

申请日：1975-09-25

Applicant: IBM

Inventor： FINDLEY GERALD I ,  CUMMINGS KENNETH D ,  ANDERSON TEDDY L

IPC: B41B19/00 ,  B41J2/44 ,  B41J2/485 ,  B41J5/30 ,  G03G15/22 ,  G06F3/12 ,  G06K15/12 ,  H04N1/23 ,  G06F7/32

Abstract: INTERMIXED PITCHES IN A BUFFERED PRINTER In a printer in which character code bytes representing characters to be printed are translated into graphic code bytes, assembled into lines and pages, and thereafter used to select character image bits which are applied to modulate a scanning laser beam and thereby effect printing of the characters, the pitch of each character is determined independently of other characters in each line being printed by pitch bits included in the sets of character image bits. As each scan line of modulation bits from a set of character image bits is selected for use in modulating the laser beam, the pitch bit included within the bits is examined to determine whether the width of the character is to be a maximum or some value less than the maximum. For the maximum width all of the modulation bits are applied to modulate the laser beam, while for a character cell width less than the maximum, only a selected number of the modulation bits are used to modulate the laser beam. An oscillator maintains a constant clock rate for the system as it defines modulation periods for the individual bits, while associated timing circuitry controls the serial flow of selected modulation bits to modulate the laser beam as well as the successive addressing of the different graphic code bytes in the line being printed.

公开(公告)号：CA1044608A

公开(公告)日：1978-12-19

申请号：CA236361

申请日：1975-09-25

Applicant: IBM

Inventor： FINDLEY GERALD I ,  ANDERSON TEDDY L

IPC: B41J2/44 ,  B41B19/00 ,  B41J5/30 ,  B41J29/50 ,  G03G15/22 ,  G06F3/12 ,  G06F17/21 ,  G06K15/10 ,  G09G5/00 ,  H04N1/23 ,  G06K15/02

Abstract: ELECTRONIC HORIZONTAL SHIFTING AND VARIABLE PRINT WIDTH IN A BUFFERED PRINTER In a buffered printer in which lines of graphic code bytes representing characters to be printed are successively advanced to a line buffer where they are sequentially sampled and the results used to modulate a laser beam undergoing successive scans of a printable medium to effect printing of the characters, an arrangement is provided for determining the size of the lefthand margin of the printable medium and the location adjacent the right-hand edge of the printable medium where printing is to be terminated. The arrangement sums count values representing a fixed offset adjacent the left edge of the printable medium and the distance between the end of the fixed offset and the horizontal location of the desired margin as determined by plural panel mounted switches to provide a first count which is carried out beginning wit the start of each scan of the laser beam. Upon termination of the first count, sampling of the graphic code bytes and modulation of the laser beam are initiated simultaneously with the beginning of a second count representing the width of the printable medium minus the count value from the panel mounted switches. Upon completion of the second count, sampling of the graphic code bytes and modulation of the laser beam are terminated until the next scan is begun.