Printer

Claim 2

A printer capable of printing data upward from a last line of a page to a first line of the page on a printing medium, comprising: print specifying means for specifying a printing mode of the page, including an upright image printing mode for printing downward from the first line of the page and a reversed image printing mode for printing upward from the last line of the page; printing data storing means including a storage region which is connectable to receive data, for storing at least one page of data in dot line units; printing data reading means for reading the one dot line units from said printing data storing means and for providing the one dot line units as second data; reading direction specifying means for specifying an order to read the dot line units from said printing data storing means in accordance with the printing mode; printing data processing means for providing printing data by reversing the second data from first to last to last to first when the reversed image printing mode is selected; character storing means for storing fixed data; fixed data forming means for selecting a portion of the fixed data; fixed data storing means for storing the portion; fixed data reading means for reading the portion from said fixed data storing means; fixed data processing means for reversing the portion read by said fixed data reading means from said fixed data storing means, when the reversed image printing mode is selected; and printing means for printing the printing data and the portion of the fixed data on the printing medium.

Claim 3

A printer as set forth in claim 1, wherein said printing data storing means comprises means for receiving compressed data; and printing data expanding means for expanding the compressed data.

Claim 4

A printer as set forth in claim 1, wherein said printing data processing means includes: means for receiving a first trigger signal and a second trigger signal; data latching means for latching the printing data on in a first order when the first trigger signal is received; and gate means for reversing the first order by outputting the printing data in reversed order by opening a gate when the second trigger signal is received.

Claim 5

A printer as set forth in claim 1, wherein said printing data processing means comprises: a serial register for storing and providing the printing data with a first-in-last-out procedure.

Claim 6

A printer capable of printing data on a page having a first line and a last line, upside down and reversed left to right for every page on a printing medium, comprising: print specifying means for specifying a printing mode of the page, including an upright image printing mode for printing downward from the first line of the page and a reversed image printing mode for printing upward from the last line of the page; printing data storing means including a storage region which is connectable to receive data, for storing at least one page of data in dot line units printing data reading means for reading the one dot line units from said printing data storing means and for providing the one dot line units as second data; reading direction specifying means for specifying an order to read the dot line units from said printing data storing means in accordance with the printing mode; printing data processing means for providing printing data by reversing the second data from first to last to last to first when the reversed image printing mode is selected; page data storing means for storing a page of the printing data line by line at least for one page; page data reading means for reading the printing data of one page from said page data storing means; character storing means for storing fixed data; fixed data forming means for selecting a portion of the fixed data; fixed data storing means for storing the portion; fixed data reading means for reading the portion from said fixed data storing means, fixed data processing means for reversing the portion read by said fixed data reading means from said fixed data storing means, when the reversed image printing mode is selected; and page printing means for printing the printing data and the portion of the fixed data one page at a time on the printing medium.

Claim 7

A printer capable of printing data on a page having a first line and a last line, upside down and reversed left to right for every page on a printing medium, comprising: print specifying means for specifying a printing mode of the page, including an upright image printing mode for printing downward from the first line of the page and a reversed image printing mode for printing upward from the last line of the page; printing data storing means including a storage region which is connectable to receive data, for storing at least one page of data in dot line units printing data reading means for reading the one dot line units from said printing data storing means and for providing the one dot line units as second data; reading direction specifying means for specifying an order to read the dot line units from said printing data storing means in accordance with the printing mode; printing data processing means for providing printing data by reversing the second data from first to last to last to first when the reversed image printing mode is selected; page data storing means for storing a page of the printing data line by line at least for one page; page data reading means for reading the printing data of one page from said page data storing means; character storing means for storing fixed data; fixed data forming means for selecting a portion of the fixed data; fixed data storing means for storing the portion; fixed data reading means for reading the portion from said fixed data storing means, fixed data processing means for reversing the portion read by said fixed data reading means from said fixed data storing means, when the reversed image printing mode is selected; and page printing means for printing the printing data and the portion of the fixed data one page at a time on the printing medium.

Claim 8

A printer as set forth in claim 5, wherein said printing data storing means comprises: means for receiving compressed data; and printing data expanding means for expanding the compressed data.

Claim 9

A printer as set forth in claim 5, wherein said printing data processing means includes: means for receiving a first trigger signal and a second trigger signal; data latching means for latching the printing data on in a first order when the first trigger signal is received; and gate means for reversing the first order by outputting the printing data in reversed order by opening a gate when the second trigger signal is received.

Claim 10

A printer as set forth in claim 5, wherein said printing data processing means comprises: a serial register for storing and providing the printing data with a first-in-last-out procedure.

Claim 11

A printer as set forth in claim 5, further comprising: data compressing means for compressing the printing data by dot lines units from said data processing means; compressed data storing means for storing the compressed data for at least one page; compressed data reading means for reading a page of the compressed data stored in said compressed data storing means; and data expanding means for expanding the compressed data read by said compressed data reading means.

Claim 12

A printer as set forth in claim 9, wherein said printing data processing means includes: means for receiving a first trigger signal and a second trigger signal; data latching means for latching the printing data on in a first order when the first trigger signal is received; and gate means for reversing the first order by outputting the printing data in reversed order by opening a gate when the second trigger signal is received.

Claim 13

A printer as set forth in claim 9, wherein said printing data processing means comprises: a serial register for storing and providing the printing data with a first-in-last-out procedure.